Add docs

Document the various ways to start profiling.

.gitignore

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+/subprojects/*/

.gitlab-ci.yml

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+stages:
+  - build
+  - flatpak
+  - deploy
+
+.cache-paths: &cache-paths
+  paths:
+    - _ccache/
+    - subprojects/gdk-pixbuf/
+    - subprojects/glib/
+    - subprojects/graphene/
+    - subprojects/libepoxy/
+    - subprojects/pango/
+
+fedora-x86_64:
+  image: registry.gitlab.gnome.org/gnome/gtk/master:v5
+  stage: build
+  script:
+    - bash -x ./.gitlab-ci/test-docker.sh
+  artifacts:
+    when: always
+    reports:
+      junit:
+        - "${CI_PROJECT_DIR}/_build/report.xml" 
+    name: "gtk-${CI_COMMIT_REF_NAME}"
+    paths:
+      - "${CI_PROJECT_DIR}/_build/meson-logs"
+      - "${CI_PROJECT_DIR}/_build/report.xml"
+      - "${CI_PROJECT_DIR}/_build/report.html"
+      - "${CI_PROJECT_DIR}/_build/testsuite/reftests/output/*.png"
+  cache:
+    key: "$CI_JOB_NAME"
+    <<: *cache-paths
+
+.mingw-defaults: &mingw-defaults
+  stage: build
+  tags:
+    - win32
+  script:
+    - C:\msys64\usr\bin\pacman --noconfirm -Syyuu
+    - C:\msys64\usr\bin\bash -lc "bash -x ./.gitlab-ci/test-msys2.sh"
+  cache:
+    key: "%CI_JOB_NAME%"
+    <<: *cache-paths
+
+msys2-mingw32:
+  variables:
+    MSYSTEM: "MINGW32"
+    CHERE_INVOKING: "yes"
+  <<: *mingw-defaults
+
+.flatpak-defaults: &flatpak-defaults
+  image: registry.gitlab.gnome.org/gnome/gnome-runtime-images/gnome:master
+  stage: flatpak
+  artifacts:
+    paths:
+      - "${APPID}-dev.flatpak"
+    expire_in: 1 day
+  script:
+    - bash -x ./.gitlab-ci/flatpak-build.sh "${APPID}"
+
+# Manual jobs, for branches and MRs
+.flatpak-manual: &flatpak-manual
+  <<: *flatpak-defaults
+  when: manual
+
+# Only build Flatpak bundles automatically on master
+.flatpak-master: &flatpak-master
+  <<: *flatpak-defaults
+  only:
+    - master
+
+flatpak-manual:demo:
+  variables:
+    APPID: org.gtk.Demo4
+  <<: *flatpak-manual
+
+flatpak-master:demo:
+  variables:
+    APPID: org.gtk.Demo4
+  <<: *flatpak-master
+
+flatpak-manual:widget-factory:
+  variables:
+    APPID: org.gtk.WidgetFactory4
+  <<: *flatpak-manual
+
+flatpak-master:widget-factory:
+  variables:
+    APPID: org.gtk.WidgetFactory4
+  <<: *flatpak-master
+
+flatpak-manual:icon-browser:
+  variables:
+    APPID: org.gtk.IconBrowser4
+  <<: *flatpak-manual
+
+flatpak-master:icon-browser:
+  variables:
+    APPID: org.gtk.IconBrowser4
+  <<: *flatpak-master
+
+pages:
+  image: registry.gitlab.gnome.org/gnome/gtk/master:v4
+  stage: deploy 
+  script:
+    - meson -Ddocumentation=true _build .
+    - ninja -C _build
+    - ninja -C _build gdk4-doc gsk4-doc gtk4-doc
+
+    - mkdir -p public/
+    - mv _build/docs/reference/gtk/html/ public/gtk/
+    - mv _build/docs/reference/gdk/html/ public/gdk/
+    - mv _build/docs/reference/gsk/html/ public/gsk/
+  artifacts:
+    paths:
+      - public
+  only:
+    - master

.gitlab-ci/Dockerfile

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+FROM fedora:29
+
+RUN dnf -y install \
+    hicolor-icon-theme \
+    adwaita-icon-theme \
+    atk-devel \
+    at-spi2-atk-devel \
+    avahi-gobject-devel \
+    cairo-devel \
+    cairo-gobject-devel \
+    ccache \
+    colord-devel \
+    cups-devel \
+    dejavu-sans-mono-fonts \
+    desktop-file-utils \
+    elfutils-libelf-devel \
+    fribidi-devel \
+    gcc \
+    gcc-c++ \
+    gdk-pixbuf2-devel \
+    gdk-pixbuf2-modules \
+    gettext \
+    git \
+    glib2-devel \
+    glibc-devel \
+    glibc-headers \
+    gobject-introspection-devel \
+    graphene-devel \
+    gstreamer1-devel \
+    gstreamer1-plugins-good \
+    gstreamer1-plugins-bad-free-devel \
+    gstreamer1-plugins-base-devel \
+    gtk-doc \
+    iso-codes \
+    itstool \
+    json-glib-devel \
+    lcov \
+    libattr-devel \
+    libepoxy-devel \
+    libffi-devel \
+    libmount-devel \
+    librsvg2 \
+    libselinux-devel \
+    libXcomposite-devel \
+    libXcursor-devel \
+    libXcursor-devel \
+    libXdamage-devel \
+    libXfixes-devel \
+    libXi-devel \
+    libXinerama-devel \
+    libxkbcommon-devel \
+    libXrandr-devel \
+    libXrender-devel \
+    libxslt \
+    mesa-dri-drivers \
+    mesa-libEGL-devel \
+    mesa-libwayland-egl-devel \
+    ninja-build \
+    pango-devel \
+    pcre-devel \
+    python3 \
+    python3-pip \
+    python3-wheel \
+    redhat-rpm-config \
+    sassc \
+    systemtap-sdt-devel \
+    vulkan-devel \
+    wayland-devel \
+    wayland-protocols-devel \
+    which \
+    xorg-x11-server-Xvfb \
+ && dnf clean all
+
+RUN pip3 install meson==0.50.0
+
+RUN pip3 install jinja2
+
+ARG HOST_USER_ID=5555
+ENV HOST_USER_ID ${HOST_USER_ID}
+RUN useradd -u $HOST_USER_ID -ms /bin/bash user
+
+USER user
+WORKDIR /home/user
+
+ENV LANG C.UTF-8

.gitlab-ci/flatpak-build.sh

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+#!/bin/bash
+
+set -e
+
+appid=$1
+
+builddir=app
+repodir=repo
+
+flatpak-builder \
+        --stop-at=gtk \
+        ${builddir} \
+        build-aux/flatpak/${appid}.json
+
+flatpak-builder \
+        --run ${builddir} build-aux/flatpak/${appid}.json \
+        meson \
+                --prefix /app \
+                --libdir /app/lib \
+                --buildtype debug \
+                -Dx11-backend=true \
+                -Dwayland-backend=true \
+                -Dprint-backends=file \
+                -Dbuild-tests=false \
+                -Dbuild-examples=false \
+                -Dintrospection=false \
+                -Ddemos=true \
+                _build .
+
+flatpak-builder \
+        --run ${builddir} build-aux/flatpak/${appid}.json \
+        ninja -C _build install
+
+flatpak-builder \
+        --finish-only \
+        --repo=${repodir} \
+        ${builddir} \
+        build-aux/flatpak/${appid}.json
+
+flatpak build-bundle \
+        ${repodir} \
+        ${appid}-dev.flatpak \
+        --runtime-repo=https://flathub.org/repo/flathub.flatpakrepo \
+        ${appid}

.gitlab-ci/meson-html-report.py

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+#!/usr/bin/env python3
+
+# Turns a Mason testlog.json file into an HTML report
+#
+# Copyright 2019  GNOME Foundation
+#
+# SPDX-License-Identifier: LGPL-2.1-or-later
+#
+# Original author: Emmanuele Bassi
+
+import argparse
+import datetime
+import json
+import os
+import sys
+from jinja2 import Template
+
+REPORT_TEMPLATE = '''
+<!DOCTYPE html>
+<html lang="en">
+<head>
+  <title>{{ report.project_name }} Test Report</title>
+  <meta charset="utf-8" />
+  <style type="text/css">
+body {
+  background: white;
+  color: #333;
+  font-family: 'Cantarell', sans-serif;
+}
+
+h1 {
+  color: #333333;
+  font-size: 1.9em;
+  font-weight: normal;
+  margin-bottom: 1em;
+  border-bottom: 1px solid #333333;
+}
+
+header {
+  position: fixed;
+  padding-bottom: 12px;
+  margin-bottom: 24px;
+  background: rgba(255, 255, 255, 0.85);
+  box-shadow: 0 0 1px rgba(0, 0, 0, 0.15);
+  z-index: 500;
+  left: 0;
+  top: 0;
+  width: 100%;
+  color: rgba(0, 0, 0, 0.3);
+  transform: translateY(0px);
+  transition: .2s background-color, color;
+  box-sizing: border-box;
+  display: block;
+  visibility: visible;
+  text-align: center;
+}
+
+article {
+  padding-top: 200px;
+  margin: 2em;
+}
+
+div.report-meta {
+  width: auto;
+  border: 1px solid #ccc;
+  padding: .5em 2em;
+  color: #3c3c3c;
+}
+
+span.result {
+  font-weight: bold;
+}
+
+span.pass {
+  color: rgb(51, 209, 122);
+}
+
+span.skip {
+  color: rgb(255, 163, 72);
+}
+
+span.fail {
+  color: rgb(224, 27, 36);
+}
+
+span.xfail {
+  color: rgb(163, 71, 186);
+}
+
+div.result {
+  border-top: 1px solid #c0c0c0;
+  padding-top: 1em;
+  padding-bottom: 1em;
+  width: 100%;
+}
+
+div.result h4 {
+  border-bottom: 1px solid #c0c0c0;
+  margin-bottom: 0.7em;
+}
+
+pre {
+  color: #fafafa;
+  background-color: black;
+  border-radius: 6px;
+  box-shadow: 0px 5px 8px 0px rgba(0, 0, 0, 0.25);
+  font-family: monospace;
+  line-height: 1.2em;
+  border: none;
+  padding: 10px 1em;
+  font-size: 0.9em;
+  overflow: auto;
+  white-space: pre;
+  word-break: normal;
+  word-wrap: normal;
+}
+
+ul.passed li {
+  display: inline;
+}
+
+ul.passed li:after {
+  content: ",";
+}
+
+ul.passed li:last-child:after {
+  content: "";
+}
+
+ul.images {
+  padding-bottom: 1em;
+}
+
+ul.images li {
+  display: inline;
+}
+  </style>
+</head>
+<body>
+  <header>
+    <h1>{{ report.project_name }} :: Test Reports</h1>
+    <div class="report-meta">
+      <p><strong>Branch:</strong> {{ report.branch_name }}</p>
+      <p><strong>Date:</strong> <time datetime="{{ report.date.isoformat() }}">{{ report.locale_date }}</time></p>
+      {% if report.job_id %}<p><strong>Job ID:</strong> {{ report.job_id }}</p>{% endif %}
+    </div>
+  </header>
+
+  <article>
+    <section>
+      <div class="summary">
+        <h3>Summary</h3>
+        <ul>
+          <li><strong>Total units:</strong> {{ report.total_units }}</li>
+          <li><strong>Passed:</strong> {{ report.total_successes }}</li>
+          <li><strong>Failed:</strong> {{ report.total_failures }}</li>
+        </ul>
+      </div>
+    </section>
+
+    {% for suite_result in report.results_list %}
+    <section>
+      <div class="result">
+        <h3>Suite: {{ suite_result.suite_name }}</h3>
+        <ul>
+          <li><strong>Units:</strong> {{ suite_result.n_units }}</li>
+          <li><strong>Passed:</strong> {{ suite_result.n_successes }}</li>
+          <li><strong>Failed:</strong> {{ suite_result.n_failures }}</li>
+        </ul>
+
+        <div class="successes">
+          <h4>Passed</h4>
+          <ul class="passed">
+            {% for success in suite_result.successes if success.result == 'OK' %}
+            <li>{{ success.name }} - result: <span class="result pass">{{ success.result }}</li>
+            {% else %}
+            <li>None</li>
+            {% endfor %}
+          </ul>
+
+          <h4>Skipped</h4>
+          <ul>
+            {% for success in suite_result.successes if success.result == 'SKIP' %}
+            <li>{{ success.name }} - result: <span class="result skip">{{ success.result }}</li>
+            {% else %}
+            <li>None</li>
+            {% endfor %}
+          </ul>
+
+          <h4>Expected failures</h4>
+          <ul>
+          {% for success in suite_result.successes if success.result == 'EXPECTEDFAIL' %}
+            <li>{{ success.name }} - result: <span class="result xfail">{{ success.result }}</span><br/>
+            {% if success.stdout %}
+              Output: <pre>{{ success.stdout }}</pre>
+            {% endif %}
+            {% if success.image_data is defined %}
+              <ul class="images">
+                <li><img alt="ref" src="{{ success.image_data.ref }}" /></li>
+                <li><img alt="out" src="{{ success.image_data.out }}" /></li>
+                <li><img alt="diff" src="{{ success.image_data.diff }}" /></li>
+              </ul>
+            {% endif %}
+            </li>
+          {% else %}
+            <li>None</li>
+          {% endfor %}
+          </ul>
+        </div>
+
+        <div class="failures">
+          <h4>Failed</h4>
+          <ul class="failed">
+            {% for failure in suite_result.failures if failure.result == 'FAIL' %}
+            <li>{{ failure.name }} - result: <span class="result fail">{{ failure.result }}</span><br/>
+              {% if failure.stdout %}
+              Output: <pre>{{ failure.stdout }}</pre>
+              {% endif %}
+              {% if failure.image_data is defined %}
+              <ul class="images">
+                <li><img alt="ref" src="{{ failure.image_data.ref }}" /></li>
+                <li><img alt="out" src="{{ failure.image_data.out }}" /></li>
+                <li><img alt="diff" src="{{ failure.image_data.diff }}" /></li>
+              </ul>
+              {% endif %}
+            </li>
+            {% else %}
+            <li>None</li>
+            {% endfor %}
+          </ul>
+
+          <h4>Timed out</h4>
+          <ul class="failed">
+            {% for failure in suite_result.failures if failure.result == 'TIMEOUT' %}
+            <li>{{ failure.name }} - result: <span class="result fail">{{ failure.result }}</span><br/>
+              {% if failure.stdout %}
+              Output: <pre>{{ failure.stdout }}</pre>
+              {% endif %}
+            </li>
+            {% else %}
+            <li>None</li>
+            {% endfor %}
+          </ul>
+        </div>
+
+      </div>
+    </section>
+    {% endfor %}
+
+  </article>
+</body>
+</html>
+'''
+
+aparser = argparse.ArgumentParser(description='Turns a Meson test log into an HTML report')
+aparser.add_argument('--project-name', metavar='NAME',
+                     help='The project name',
+                     default='Unknown')
+aparser.add_argument('--job-id', metavar='ID',
+                     help='The job ID for the report',
+                     default=None)
+aparser.add_argument('--branch', metavar='NAME',
+                     help='Branch of the project being tested',
+                     default='master')
+aparser.add_argument('--output', metavar='FILE',
+                     help='The output HTML file, stdout by default',
+                     type=argparse.FileType('w', encoding='UTF-8'),
+                     default=sys.stdout)
+aparser.add_argument('--reftest-suite', metavar='NAME',
+                     help='The name of the reftests suite',
+                     default='reftest')
+aparser.add_argument('--reftest-output-dir', metavar='DIR',
+                     help='The output directory for reftests data',
+                     default=None)
+aparser.add_argument('infile', metavar='FILE',
+                     help='The input testlog.json, stdin by default',
+                     type=argparse.FileType('r', encoding='UTF-8'),
+                     default=sys.stdin)
+
+args = aparser.parse_args()
+
+outfile = args.output
+
+suites = {}
+for line in args.infile:
+    data = json.loads(line)
+    (full_suite, unit_name) = data['name'].split(' / ')
+    (project_name, suite_name) = full_suite.split(':')
+
+    unit = {
+        'project-name': project_name,
+        'suite': suite_name,
+        'name': unit_name,
+        'duration': data['duration'],
+        'returncode': data['returncode'],
+        'result': data['result'],
+        'stdout': data['stdout'],
+    }
+
+    if args.reftest_output_dir is not None and suite_name == args.reftest_suite:
+        filename = unit_name.split(' ')[1]
+        basename = os.path.splitext(filename)[0]
+
+        image_data = {
+            'ref': os.path.join(args.reftest_output_dir, '{}.ref.png'.format(basename)),
+            'out': os.path.join(args.reftest_output_dir, '{}.out.png'.format(basename)),
+            'diff': os.path.join(args.reftest_output_dir, '{}.diff.png'.format(basename)),
+        }
+
+        unit['image_data'] = image_data
+
+    units = suites.setdefault(full_suite, [])
+    units.append(unit)
+
+report = {}
+report['date'] = datetime.datetime.utcnow()
+report['locale_date'] = report['date'].strftime("%c")
+report['project_name'] = args.project_name
+report['job_id'] = args.job_id
+report['branch_name'] = args.branch
+report['total_successes'] = 0
+report['total_failures'] = 0
+report['total_units'] = 0
+report['results_list'] = []
+
+for name, units in suites.items():
+    (project_name, suite_name) = name.split(':')
+    print('Processing {} suite {}:'.format(project_name, suite_name))
+
+    def if_failed(unit):
+        if unit['result'] in ['FAIL', 'TIMEOUT']:
+            return True
+        return False
+
+    def if_succeded(unit):
+        if unit['result'] in ['OK', 'EXPECTEDFAIL', 'SKIP']:
+            return True
+        return False
+
+    successes = list(filter(if_succeded, units))
+    failures = list(filter(if_failed, units))
+
+    n_units = len(units)
+    n_successes = len(successes)
+    n_failures = len(failures)
+
+    report['total_units'] += n_units
+    report['total_successes'] += n_successes
+    report['total_failures'] += n_failures
+    print(' - {}: {} total, {} pass, {} fail'.format(suite_name, n_units, n_successes, n_failures))
+
+    suite_report = {
+        'suite_name': suite_name,
+        'n_units': n_units,
+        'successes': successes,
+        'n_successes': n_successes,
+        'failures': failures,
+        'n_failures': n_failures,
+    }
+    report['results_list'].append(suite_report)
+
+template = Template(REPORT_TEMPLATE)
+outfile.write(template.render({'report': report}))

.gitlab-ci/meson-junit-report.py

@@ -0,0 +1,109 @@
+#!/usr/bin/env python3
+
+# Turns a Meson testlog.json file into a JUnit XML report
+#
+# Copyright 2019  GNOME Foundation
+#
+# SPDX-License-Identifier: LGPL-2.1-or-later
+#
+# Original author: Emmanuele Bassi
+
+import argparse
+import datetime
+import json
+import os
+import sys
+import xml.etree.ElementTree as ET
+
+aparser = argparse.ArgumentParser(description='Turns a Meson test log into a JUnit report')
+aparser.add_argument('--project-name', metavar='NAME',
+                     help='The project name',
+                     default='unknown')
+aparser.add_argument('--job-id', metavar='ID',
+                     help='The job ID for the report',
+                     default='Unknown')
+aparser.add_argument('--branch', metavar='NAME',
+                     help='Branch of the project being tested',
+                     default='master')
+aparser.add_argument('--output', metavar='FILE',
+                     help='The output file, stdout by default',
+                     type=argparse.FileType('w', encoding='UTF-8'),
+                     default=sys.stdout)
+aparser.add_argument('infile', metavar='FILE',
+                     help='The input testlog.json, stdin by default',
+                     type=argparse.FileType('r', encoding='UTF-8'),
+                     default=sys.stdin)
+
+args = aparser.parse_args()
+
+outfile = args.output
+
+testsuites = ET.Element('testsuites')
+testsuites.set('id', '{}/{}'.format(args.job_id, args.branch))
+testsuites.set('package', args.project_name)
+testsuites.set('timestamp', datetime.datetime.utcnow().isoformat(timespec='minutes'))
+
+suites = {}
+for line in args.infile:
+    data = json.loads(line)
+    (full_suite, unit_name) = data['name'].split(' / ')
+    (project_name, suite_name) = full_suite.split(':')
+
+    duration = data['duration']
+    return_code = data['returncode']
+    log = data['stdout']
+
+    unit = {
+        'suite': suite_name,
+        'name': unit_name,
+        'duration': duration,
+        'returncode': return_code,
+        'stdout': log,
+    }
+
+    units = suites.setdefault(suite_name, [])
+    units.append(unit)
+
+for name, units in suites.items():
+    print('Processing suite {} (units: {})'.format(name, len(units)))
+
+    def if_failed(unit):
+        if unit['returncode'] != 0:
+            return True
+        return False
+
+    def if_succeded(unit):
+        if unit['returncode'] == 0:
+            return True
+        return False
+
+    successes = list(filter(if_succeded, units))
+    failures = list(filter(if_failed, units))
+    print(' - {}: {} pass, {} fail'.format(name, len(successes), len(failures)))
+
+    testsuite = ET.SubElement(testsuites, 'testsuite')
+    testsuite.set('name', '{}/{}'.format(args.project_name, name))
+    testsuite.set('tests', str(len(units)))
+    testsuite.set('errors', str(len(failures)))
+    testsuite.set('failures', str(len(failures)))
+
+    for unit in successes:
+        testcase = ET.SubElement(testsuite, 'testcase')
+        testcase.set('classname', '{}/{}'.format(args.project_name, unit['suite']))
+        testcase.set('name', unit['name'])
+        testcase.set('time', str(unit['duration']))
+
+    for unit in failures:
+        testcase = ET.SubElement(testsuite, 'testcase')
+        testcase.set('classname', '{}/{}'.format(args.project_name, unit['suite']))
+        testcase.set('name', unit['name'])
+        testcase.set('time', str(unit['duration']))
+
+        failure = ET.SubElement(testcase, 'failure')
+        failure.set('classname', '{}/{}'.format(args.project_name, unit['suite']))
+        failure.set('name', unit['name'])
+        failure.set('type', 'error')
+        failure.text = unit['stdout']
+
+output = ET.tostring(testsuites, encoding='unicode')
+outfile.write(output)

.gitlab-ci/run-docker.sh

@@ -0,0 +1,11 @@
+#!/bin/bash
+
+set -e
+
+TAG="registry.gitlab.gnome.org/gnome/gtk/master:v4"
+
+sudo docker build --build-arg HOST_USER_ID="$UID" --tag "${TAG}" \
+    --file "Dockerfile" .
+sudo docker run --rm --security-opt label=disable \
+    --volume "$(pwd)/..:/home/user/app" --workdir "/home/user/app" \
+    --tty --interactive "${TAG}" bash

.gitlab-ci/test-docker.sh

@@ -0,0 +1,54 @@
+#!/bin/bash
+
+set -e
+
+srcdir=$(pwd)
+
+mkdir -p _ccache
+export CCACHE_BASEDIR="$(pwd)"
+export CCACHE_DIR="${CCACHE_BASEDIR}/_ccache"
+
+ccache --zero-stats
+ccache --show-stats
+export CCACHE_DISABLE=true
+meson \
+        -Dx11-backend=true \
+        -Dwayland-backend=true \
+        -Dbroadway-backend=true \
+        -Dvulkan=yes \
+        --werror \
+        _build $srcdir
+unset CCACHE_DISABLE
+
+cd _build
+
+ninja
+ccache --show-stats
+
+set +e
+
+xvfb-run -a -s "-screen 0 1024x768x24" \
+    meson test \
+        --timeout-multiplier 2 \
+        --print-errorlogs \
+        --suite=gtk \
+        --no-suite=gtk:a11y
+
+# Save the exit code
+exit_code=$?
+
+# We always want to run the report generators
+$srcdir/.gitlab-ci/meson-junit-report.py \
+        --project-name=gtk \
+        --job-id="${CI_JOB_NAME}" \
+        --output=report.xml \
+        meson-logs/testlog.json
+
+$srcdir/.gitlab-ci/meson-html-report.py \
+        --project-name=GTK \
+        --job-id="${CI_JOB_NAME}" \
+        --reftest-output-dir="testsuite/reftests/output" \
+        --output=report.html \
+        meson-logs/testlog.json
+
+exit $exit_code

.gitlab-ci/test-msys2.sh

@@ -0,0 +1,53 @@
+#!/bin/bash
+
+set -e
+
+if [[ "$MSYSTEM" == "MINGW32" ]]; then
+    export MSYS2_ARCH="i686"
+else
+    export MSYS2_ARCH="x86_64"
+fi
+
+# Update everything
+pacman --noconfirm -Suy
+
+# Install the required packages
+pacman --noconfirm -S --needed \
+    base-devel \
+    git \
+    mingw-w64-$MSYS2_ARCH-toolchain \
+    mingw-w64-$MSYS2_ARCH-ccache \
+    mingw-w64-$MSYS2_ARCH-pkg-config \
+    mingw-w64-$MSYS2_ARCH-gobject-introspection \
+    mingw-w64-$MSYS2_ARCH-meson \
+    mingw-w64-$MSYS2_ARCH-adwaita-icon-theme \
+    mingw-w64-$MSYS2_ARCH-atk \
+    mingw-w64-$MSYS2_ARCH-cairo \
+    mingw-w64-$MSYS2_ARCH-gdk-pixbuf2 \
+    mingw-w64-$MSYS2_ARCH-glib2 \
+    mingw-w64-$MSYS2_ARCH-graphene \
+    mingw-w64-$MSYS2_ARCH-json-glib \
+    mingw-w64-$MSYS2_ARCH-libepoxy \
+    mingw-w64-$MSYS2_ARCH-pango \
+    mingw-w64-$MSYS2_ARCH-fribidi \
+    mingw-w64-$MSYS2_ARCH-gst-plugins-bad \
+    mingw-w64-$MSYS2_ARCH-shared-mime-info
+
+mkdir -p _ccache
+export CCACHE_BASEDIR="$(pwd)"
+export CCACHE_DIR="${CCACHE_BASEDIR}/_ccache"
+
+# Build
+ccache --zero-stats
+ccache --show-stats
+export CCACHE_DISABLE=true
+meson \
+    -Denable-x11-backend=false \
+    -Denable-wayland-backend=false \
+    -Denable-win32-backend=true \
+    -Dvulkan=no \
+    _build
+unset CCACHE_DISABLE
+
+ninja -C _build
+ccache --show-stats

.gitlab/issue_templates/Bug.md

@@ -0,0 +1,36 @@
+## Steps to reproduce
+
+ 1. ...
+ 2. ...
+ 3. ...
+
+<!--
+  You should try and reproduce with the demos applications available
+  under the `demos` directory, or the test programs in the `tests` directory.
+  Alternatively, please attach a *small and self-contained* example that
+  exhibits the issue.
+-->
+
+## Current behavior
+<!--
+  Please describe the current behaviour
+-->
+
+## Expected outcome
+<!--
+  Please describe the expected outcome
+-->
+
+## Version information
+<!--
+ - Which version of GTK you are using
+ - What operating system and version
+  - For Linux, which distribution
+ - If you built GTK yourself, the list of options used to configure the build
+-->
+
+## Additional information
+<!--
+ - Screenshots or screen recordings are useful for visual errors
+ - Please report any warning or message printed on the terminal
+-->

.gitlab/issue_templates/Crash.md

@@ -0,0 +1,34 @@
+## Steps to reproduce
+
+ 1. ...
+ 2. ...
+ 3. ...
+
+<!--
+  You should try and reproduce with the demos applications available
+  under the `demos` directory, or the test programs in the `tests` directory.
+  Alternatively, please attach a *small and self-contained* example that
+  exhibits the issue.
+-->
+
+## Version information
+<!--
+ - Which version of GTK you are using
+ - What operating system and version
+  - for Linux, which distribution
+ - If you built GTK yourself, the list of options used to configure the build
+-->
+
+## Warnings
+<!--
+ - If the application generates warning messages before crashing please
+   report them here
+-->
+
+## Backtrace
+<!--
+ - Attaching a stack trace obtained using GDB is appreciated; follow the
+   instructions on the wiki:
+
+   https://wiki.gnome.org/Community/GettingInTouch/Bugzilla/GettingTraces
+-->

CONTRIBUTING.md

@@ -1,40 +1,266 @@
-If you want to hack on the GTK+ project, you'll need to have the development
-tools appropriate for your operating system, including:
+# Contribution guidelines
 
-	- Python (2.7 or 3.x)
-	- Meson
-	- Ninja
-	- Gettext (19.7 or newer)
-	- a C99 compatible compiler
+Thank you for considering contributing to the GTK project!
+
+These guidelines are meant for new contributors, regardless of their level
+of proficiency; following them allows the maintainers of the GTK project to
+more effectively evaluate your contribution, and provide prompt feedback to
+you. Additionally, by following these guidelines you clearly communicate
+that you respect the time and effort that the people developing GTK put into
+managing the project.
+
+GTK is a complex free software GUI toolkit, and it would not exist without
+contributions from the free and open source software community. There are
+many things that we value:
+
+ - bug reporting and fixing
+ - documentation and examples
+ - tests
+ - new features
+
+Please, do not use the issue tracker for support questions. If you have
+questions on how to use GTK effectively, you can use:
+
+ - the `#gtk` IRC channel on irc.gnome.org
+ - the [gtk](https://mail.gnome.org/mailman/listinfo/gtk-list) mailing list,
+   for general questions on GTK
+ - the [gtk-app-devel](https://mail.gnome.org/mailman/listinfo/gtk-app-devel-list)
+   mailing list, for questions on application development with GTK
+ - the [gtk-devel](https://mail.gnome.org/mailman/listinfo/gtk-devel-list)
+   mailing list, for questions on developing GTK itself
+
+You can also look at the GTK tag on [Stack
+Overflow](https://stackoverflow.com/questions/tagged/gtk).
+
+The issue tracker is meant to be used for actionable issues only.
+
+## How to report bugs
+
+### Security issues
+
+You should not open a new issue for security related questions.
+
+When in doubt, send an email to the [security](mailto:security@gnome.org)
+mailing list.
+
+### Bug reports
+
+If you're reporting a bug make sure to list:
+
+ 0. which version of GTK are you using?
+ 0. which operating system are you using?
+ 0. the necessary steps to reproduce the issue
+ 0. the expected outcome
+ 0. a description of the behavior; screenshots are also welcome
+ 0. a small, self-contained example exhibiting the behavior; if this
+    is not available, try reproducing the issue using the GTK examples
+    or interactive tests
+
+If the issue includes a crash, you should also include:
+
+ 0. the eventual warnings printed on the terminal
+ 0. a backtrace, obtained with tools such as GDB or LLDB
+
+For small issues, such as:
+
+ - spelling/grammar fixes in the documentation
+ - typo correction
+ - comment clean ups
+ - changes to metadata files (CI, `.gitignore`)
+ - build system changes
+ - source tree clean ups and reorganizations
+
+You should directly open a merge request instead of filing a new issue.
+
+### Features and enhancements
+
+Feature discussion can be open ended and require high bandwidth channels; if
+you are proposing a new feature on the issue tracker, make sure to make
+an actionable proposal, and list:
+
+ 0. what you're trying to achieve
+ 0. prior art, in other toolkits or applications
+ 0. design and theming changes
+
+If you're proposing the integration of new features it helps to have
+multiple applications using shared or similar code, especially if they have
+iterated over it various times.
+
+Each feature should also come fully documented, and with tests.
+
+## Your first contribution
+
+### Prerequisites
+
+If you want to contribute to the GTK project, you will need to have the
+development tools appropriate for your operating system, including:
+
+ - Python 3.x
+ - Meson
+ - Ninja
+ - Gettext (19.7 or newer)
+ - a [C99 compatible compiler](https://wiki.gnome.org/Projects/GLib/CompilerRequirements)
 
 Up-to-date instructions about developing GNOME applications and libraries
-can be found here:
+can be found on [the GNOME Developer Center](https://developer.gnome.org).
 
-        https://developer.gnome.org
+The GTK project uses GitLab for code hosting and for tracking issues. More
+information about using GitLab can be found [on the GNOME
+wiki](https://wiki.gnome.org/GitLab).
 
-Information about using git with GNOME can be found here:
+### Dependencies
 
-        https://wiki.gnome.org/Git
+In order to get GTK from Git installed on your system, you need to have the
+required versions of all the software dependencies required by GTK; typically,
+this means a recent version of GLib, Cairo, Pango, and ATK, as well as the
+platform-specific dependencies for the windowing system you are using (Wayland,
+X11, Windows, or macOS).
 
-In order to get Git GTK+ installed on your system, you need to have the
-required versions of all the GTK+ dependencies; typically, this means a
-recent version of GLib, Cairo, Pango, and ATK.
+The core dependencies for GTK are:
 
-**Note**: if you plan to push changes to back to the master repository and
-have a GNOME account, you want to use the following instead:
+ - [GLib, GObject, and GIO](https://gitlab.gnome.org/GNOME/glib)
+ - [Cairo](http://cairographics.org)
+ - [Pango](https://gitlab.gnome.org/GNOME/pango)
+ - [GdkPixbuf](https://gitlab.gnome.org/GNOME/gdk-pixbuf)
+ - [Epoxy](https://github.com/anholt/libepoxy)
+ - [ATK](https://gitlab.gnome.org/GNOME/atk)
+ - [Graphene](https://github.com/ebassi/graphene)
+
+GTK will attempt to download and build some of these dependencies if it
+cannot find them on your system.
+
+Additionally, you may want to look at projects that create a development
+environment for you, like [jhbuild](https://wiki.gnome.org/HowDoI/Jhbuild)
+and [gvsbuild](https://github.com/wingtk/gvsbuild).
+
+### Getting started
+
+You should start by forking the GTK repository from the GitLab web UI, and
+cloning from your fork:
 
 ```sh
-$ git clone ssh://<username>@git.gnome.org/git/gtk+
+$ git clone https://gitlab.gnome.org/yourusername/gtk.git
+$ cd gtk
 ```
 
-To compile the Git version of GTK+ on your system, you will need to
+**Note**: if you plan to push changes to back to the main repository and
+have a GNOME account, you can skip the fork, and use the following instead:
+
+```sh
+$ git clone git@gitlab.gnome.org:GNOME/gtk.git
+$ cd gtk
+```
+
+To compile the Git version of GTK on your system, you will need to
 configure your build using Meson:
 
 ```sh
 $ meson _builddir .
+$ cd _builddir
+$ ninja
 ```
 
-For information about submitting patches and pushing changes to Git, see the
-`README.md` and `README.commits` files. In particular, don't, under any
-circumstances, push anything to Git before reading and understanding
-`README.commmits`.
+Typically, you should work on your own branch:
+
+```sh
+$ git checkout -b your-branch
+```
+
+Once you've finished working on the bug fix or feature, push the branch
+to the Git repository and open a new merge request, to let the GTK
+maintainers review your contribution.
+
+### Code reviews
+
+Each contribution is reviewed by the core developers of the GTK project.
+
+The [CODE-OWNERS](./docs/CODE-OWNERS) document contains the list of core
+contributors to GTK and the areas for which they are responsible; you
+should ensure to receive their review and signoff on your changes.
+
+### Commit messages
+
+The expected format for git commit messages is as follows:
+
+```plain
+Short explanation of the commit
+
+Longer explanation explaining exactly what's changed, whether any
+external or private interfaces changed, what bugs were fixed (with bug
+tracker reference if applicable) and so forth. Be concise but not too
+brief.
+
+Closes #1234
+```
+
+ - Always add a brief description of the commit to the _first_ line of
+ the commit and terminate by two newlines (it will work without the
+ second newline, but that is not nice for the interfaces).
+
+ - First line (the brief description) must only be one sentence and
+ should start with a capital letter unless it starts with a lowercase
+ symbol or identifier. Don't use a trailing period either. Don't exceed
+ 72 characters.
+
+ - The main description (the body) is normal prose and should use normal
+ punctuation and capital letters where appropriate. Consider the commit
+ message as an email sent to the developers (or yourself, six months
+ down the line) detailing **why** you changed something. There's no need
+ to specify the **how**: the changes can be inlined.
+
+ - When committing code on behalf of others use the `--author` option, e.g.
+ `git commit -a --author "Joe Coder <joe@coder.org>"` and `--signoff`.
+
+ - If your commit is addressing an issue, use the
+ [GitLab syntax](https://docs.gitlab.com/ce/user/project/issues/automatic_issue_closing.html)
+ to automatically close the issue when merging the commit with the upstream
+ repository:
+
+```plain
+Closes #1234
+Fixes #1234
+Closes: https://gitlab.gnome.org/GNOME/gtk/issues/1234
+```
+
+ - If you have a merge request with multiple commits and none of them
+ completely fixes an issue, you should add a reference to the issue in
+ the commit message, e.g. `Bug: #1234`, and use the automatic issue
+ closing syntax in the description of the merge request.
+
+### Commit access to the GTK repository
+
+GTK is part of the GNOME infrastructure. At the current time, any
+person with write access to the GNOME repository can merge changes to
+GTK. This is a good thing, in that it encourages many people to work
+on GTK, and progress can be made quickly. However, GTK is a fairly
+large and complicated project on which many other things depend, so to
+avoid unnecessary breakage, and to take advantage of the knowledge
+about GTK that has been built up over the years, we'd like to ask
+people committing to GTK to follow a few rules:
+
+0. Ask first. If your changes are major, or could possibly break existing
+   code, you should always ask. If your change is minor and you've been
+   working on GTK for a while it probably isn't necessary to ask. But when
+   in doubt, ask. Even if your change is correct, somebody may know a
+   better way to do things. If you are making changes to GTK, you should
+   be subscribed to the [gtk-devel](https://mail.gnome.org/mailman/listinfo/gtk-devel-list)
+   mailing list; this is a good place to ask about intended changes.
+   The `#gtk` IRC channel on irc.gnome.org is also a good place to find GTK
+   developers to discuss changes, but if you live outside of the EU/US time
+   zones, an email to the gtk-devel mailing list is the most certain and
+   preferred method.
+
+0. Ask _first_.
+
+0. Always write a meaningful commit message. Changes without a sufficient
+   commit message will be reverted.
+
+0. Never push to the `master` branch, or any stable branches, directly; you
+   should always go through a merge request, to ensure that the code is
+   tested on the CI infrastructure at the very least. A merge request is
+   also the proper place to get a comprehensive code review from the core
+   developers of GTK.
+
+If you have been contributing to GTK for a while and you don't have commit
+access to the repository, you may ask to obtain it following the [GNOME account
+process](https://wiki.gnome.org/AccountsTeam/NewAccounts).

NEWS.pre-2.0

@@ -0,0 +1,903 @@
+Overview of Changes in GTK+ 2.0.0
+=================================
+
+* GtkTreeView fixes [Jonathan Blandford, Kristian Rietveld, Darin Adler]
+* Build fixes [Anders Carlsson, Tor Lillqvist, Manish Singh]
+* Bug fixes. [Thomas Leonard, Owen Taylor]
+
+Overview of Changes in GTK+ 2.0.0 rc1
+=====================================
+
+* GtkTreeView fixes [Kristian Rietveld, Jonathan Blandford, Richard Hult]
+* Text widget fixes [Havoc Pennington]
+* Efficiency fixes when using Xft [Owen Taylor]
+* Key handling fixes and other fixes for Win32 [Hans Breuer, Tor Lillqvist]
+* Try to fix key handling without XKEYBOARD extension [Owen]
+* Documentation fixes and improvements 
+  [Matthias Clasen, Alexey Malyshev, Akira Tagoh, Vitaly Tishkov]
+* Widget drawing improvements [Soeren Sandmann]
+* Allow cycling between multiple menu bars with <Control>Tab [Owen]
+* Try to build libraries with only shared library dependencies on Xft to 
+  deal with transition to Xft2 [Owen]
+* Portability fixes [Owen, Miroslaw Dobrzanski-Neumann]
+* Don't use red as the default cursor color [Owen]
+* Bug fixes, bug fixes, bug fixes.
+
+Other contributors: Darin Adler, Jacob Berkman, Kevin Breit, Hans Breuer, 
+  Anders Carlsson, Damon Chaplin, Finlay Dobbie, Jody Goldberg,
+  Andreas J. Guelzow, Scott Guilbeaux, Vlad Harchev, James Henstridge,
+  Tim Janik, Satyajit Kanungo, Charles Kerr, Sergey Kuzminov, Miles Lane, 
+  Alexander Larsson, Paolo Maggi, Skip Montaro, Jan Mynarik, Sven Neumann, 
+  Padraig O'Briain, Narayani Pattipati, Mark Patton, Havoc Pennington, 
+  Ettore Perazzoli, Guillermo S. Romero, Manish Singh, Morten Welinder
+
+Overview of Changes in GTK+ 1.3.15
+==================================
+
+* New stock and improved icon images
+  [Tuomas Kuosmanen, Jakub Steiner, Anders Carlsson]
+* Widget drawing improvements for check and radio buttons,
+  spinbuttons [Soeren Sandmann]
+* Clean up module search path algorithm, use GTK_PATH [Owen Taylor]
+* Add GtkSetting for font name. [Richard Hestilow]
+* Much improved key matching code, accelerators work independent
+  of group [Owen]
+* Make mnemonics work for embedded GtkPlug widgets [Owen]
+* Keynav improvements for GtkTreeView [Kristian Rietveld]
+* Fix gtk_tree_view_scroll_to_cell() [Jonathan Blandford]
+* Rename gtk_tree_view_get_iter_root() and gtk_tree_path_new_root()
+  to gtk_tree_view_get_iter_first() and gtk_tree_path_new_first(),
+  add compatibility macros.
+* GtkTreeView bug fixes [Kristian, Anders, Damon Chaplin]
+* GtkTextView bug fixes [Havoc Pennington]
+* Pad class structures for future binary compatibility [Owen]
+* Tutorial improvements [Sven Neumann, Matthias Clasen]
+* Fixes for MULTIPLE selection target [Gregory Merchan, Owen]
+* Fix problems with initial widget size [Owen]
+* AIX compilation fixes [Miroslaw Dobrzanski-Neumann]
+* Win32 fixes [Hans Breuer, Tor Lillqvist]
+* Miscellaneous bug fixes
+
+Other contributors: David L. Cooper, Eric Fischer, Jody Goldberg, 
+  Satajyit Kanungo, Thomas Leonard, Mark Patton, Manish Singh, 
+  Nicolas Setton
+
+Overview of Changes in GTK+ 1.3.14
+==================================
+
+* Keyboard focus improvements [Owen Taylor]
+* Code cleanup [Matthias Clasen, Manish Singh, Darin Adler]
+* Fix accidentally exported variables [Mark McLoughlin]
+* GtkTreeView fixes [Jonathan Blandford, Kristian Rietveld, John Harper, Darin]
+* Default to yellow tooltips [Owen]
+* RC file fixes for reloading, priorities [Owen, Matthias]
+* GtkMenu behavior improvements and bug fixes [Owen, Arnaud Charlet]
+* GtkTextView fixes [Havoc Pennington, Daniel Elstner, Dennis Bjorklund]
+* Improve keynav for paned widgets, tooltips, spin buttons, notebooks, 
+  scrolled windows [Soeren Sandmann, Padraig, Owen]
+* Add Emacs/Default key themes [Owen]
+* Win32 fixes [Hans Breuer, Tor Lillqvist]
+* Ethiopic input methods [Daniel Yacob]
+* Opaque paned window resizing [Soeren]
+* Tweak table expansion behavior [Tim Janik]
+* Fix GtkCalendar focus drawing [Bill Haneman]
+* Allow themeable cursor thickness [Bill]
+* Start of fixing of tutorial for GTK+-2.0 [Matthias]
+* Add a ::adjust-bounds signal to GtkRange to allow spreadsheet style
+  scrollbars. [Jody Goldberg]
+* Add the ability to turn on multiple selection for GtkFileSel [Manish]
+* Bug fixes
+
+Other contributors: Jacob Berkman, Padraig O'Briain, Anders Carlsson,
+ Johan Dahlin, Richard Hult, Stefan Kost, Alex Larsson, Thomas Leonard,
+ Paolo Maggi, Alexey Malyshev, Federico Mena Quintero, Skip Montaro,
+ Sven Neumann, Havoc Pennington, Laszlo Peter, Christian Rose, Joe Shaw,
+ Kevin Vandersloot,  Morten Welinder, Peter Williams
+
+Overview of Changes in GTK+ 1.3.13
+==================================
+
+* Tree view fixes. [Kristian Rietveld, Jonathan Blandford, Anders Carlsson]
+* Tree view support for low-vision themes [Bill Haneman]
+* Text view bug fixes. [Havoc Pennington]
+* Win32 fixes and improvements.  [Tor Lillqvist, Hans Breuer, 
+  Archaeopteryx Software]
+* Documentation improvements [Matthias Clasen, Havoc Pennington]
+* Accelerate alpha compositing using RENDER extension if present,
+  and optimize the non-RENDER case a lot. [Owen Taylor]
+* Add support for "optional keybindings" (action signal returns FALSE) [Owen]
+* Fixed the infamous changing directory deletes filename bug 
+  [Owen and a cast of thousands]
+* Add mouse cursor hiding for text widgets [Anders Carlsson]
+* Simple Hangul input module [Yusuke Tabata]
+* Removed the scary startup warning.
+* GdkPixbuf pixel handling fixes [Owen, Michael Hore, Jim Cape]
+* Converted GtkFileSelection and GtkFontSelection to use GtKTreeView widgets
+  instead of the deprecated GtkCList [Owen]
+* gtkhsv.h was installed by mistake, fixed that. [reported by Ross Burton]
+* gdk_pixbuf_render_to_drawable() now also handles alpha pixbufs.
+* Made Gtkimage draw GtkPixmap, GtkImage, GdkPixbuf insensitive, prelighted,
+  etc. [Havoc, Owen]
+* Marked gtk_item_factory_path_from_widget() G_CONST_RETURN. [Matt Wilson]
+* gtk_image_menu_item_new_from_stock() now falls back to
+  new_with_mnemonic, for consistency with gtk_button_new_from_stock()
+  [Havoc Pennington]
+* GdkModifierType is now consistently used for modifier mask parameters
+  [Mark Patton]
+* gtk_widget_set_accel_path() is now publically exported.
+
+Other contributors: Darin Adler, Jeffrey Baker, Damon Chaplin, Brian Cameron, 
+  Murray Cumming, James Henstridge, Jacob Berkman, Arnaud Charlet, Jeff Franks, 
+  Jeff Garzik, Jody Goldberg, Diego Gonzalez, Melvin Hadasht, Raja Harinath, 
+  Tim Janik, Mike Kestner, Mathieu Lacage, Alex Larsson, Ryan Lovett, 
+  Mark McLoughlin, Sven Neumann, Padraig O'Briain, Xavier Ordoquy, Chris Phelps, 
+  Detlef Reichl, Guillermo S. Romero, Federico Mena Quintero, Manish Singh,
+  HideToshi Tajima, Vitaly Tishkov, Jon Trowbridge, Sergey Vlasov.
+
+Overview of Changes in GTK+ 1.3.12
+==================================
+
+* Fix problems with PNG saving [Michael Natterer]
+* Cleanups of deprecated usages [Sebastian Wilhelmi]
+* Win32 fixes [Tor Lillqvist]
+* Documentation improvements [Matthias Clasen, Havoc Pennington, 
+  Vitaly Tishkov]
+* Frame buffer port fixes [Manish Singh]
+* GtkTextView bug fixes [Havoc Pennington, Chris Phelps]
+* Menu behavior improvements [Kristian Rietveld]
+* Make focus line width configurable, focus color work on 
+  dark themes. [Bill Haneman, Owen Taylor]
+* Add state argument to gtk_paint_focus() [Bill]
+* Added incremental revalidation to tree view, for better apparent speed 
+  [Jonathan Blandford]
+* Remove useless gtk_tree_view_column_cell_event() [Jonathan]
+* Display XIM status in a separate window [HideToshi Tajima]
+* Add GDK_DEBUG=nograbs to disable pointer, keyboard grabs [Jacob Berkman]
+* Add menu of Unicode control characters to GtkEntry, GtkTextView 
+  [Dov Grobgeld, Havoc]
+* Pass key releases along to input methods [Owen]
+* Many bug fixes
+
+Other contributors: Darin Adler, Fabrice Bellet, Chris Blizzard, 
+  Hans Breuer, Anders Carlsson, Damon Chaplin, Murray Cumming, Jeff Franks, 
+  James Henstridge, Tim Janik, Alex Larsson, George Lebl, Kjartan, Maraas, 
+  Sven Neumann, Seth Nickell, Padraig O'Briain, Soeren Sandmann, Manish Singh, 
+  Matt Wilson
+
+Overview of Changes in GTK+ 1.3.11
+==================================
+
+* Massive rework of accelerator API and implementation (Tim Janik)
+* Major fixes to resizing and redrawing to eliminate hysteresis
+  and optimize. (Owen Taylor, Soeren Sandmann)
+* Make many widgets NO_WINDOW to improve appearance and reduce
+  drawing overhead (Owen)
+* Text view fixes (Havoc Pennington)
+* Make child widgets in GtkTextView work (Havoc)
+* GtkTreeModelSort fixage (Jonathan Blandford, Kristian Rietveld)
+* Clean up GtkTreeView drag and drop support (Owen)
+* Misc tree view fixes and improvements (Jonathan, Kristian, Anders, Matt Wilson)
+* Add gtk_window_get/set_focus(), gtk_window_set_default() as public
+  functions (Owen, Damian Ivereigh)
+* Fixes to GtkPlug/GtkSocket (Michael Meeks, Owen)
+* Change button ordering in standard dialogs to correspond to 
+  GNOME usability project proposal (Gregory Merchan)
+* Add support for context sensitivity in input methods (Owen)
+* Hook up gtk_im_context_set_use_preedit() (Hidetoshi Tajima)
+* Fix gdk_window_scroll() and other aspects of big windows (Owen)
+* Remove need for X connection for class initialization (Jacob Berkman)
+* Propagate key events to parents of focused widget (Owen)
+* Don't export normal GTK+ marshalers, export deprecated compat marshalers (Owen)
+* Many Win32 Fixes and improvements (Hans Breuer, Tor Lillqvist)
+* Bug and documentation fixing (Matthias Clasen, Anders Carlsson,
+  Jacob Berkman, others.)
+
+Other Contributors:
+  Darin Adler, Marius Andreiana, Erwann Chenede, Murray Cumming, Janet Davis, 
+  Daniel Egger, Daniel Elstner, Jeff Franks, Alex Larsson, George Lebl, 
+  Sergey Kuzminov, Eric Lemings, Arkadiusz Miskiewicz, Padraig O'Briain, Sven Neumann, 
+  Kristian Rietveld, Nicolas Setton, Manish Singh,  Vitaly Tishkov, Sebastian Wilhelmi, 
+  Michael Natterer
+
+Overview of Changes in GTK+ 1.3.10
+==================================
+
+* GtkTextView fixes [Havoc Pennington]
+* GtkTreeView fixes and improvements [Jonathan Blandford, Kristian,
+  Manish Singh, Joshua Pritikin, Oleg Maiboroda, James Henstridge]
+* gtkdemo improvements [Kristian Rietveld]
+* Drag and drop fixes to generic code and widgets 
+  [Owen Taylor, Damian Ivereigh]
+* Documentation improvement [Havoc Pennington, Matthias Clasen]
+* Spelling fixes [Jacob Berkman]
+* Move signals to the GtkEditable interface [Kristian]
+* Further stock image improvements [Jakub Steiner]
+* Support text chunks for the PGN loader, add gdk_pixbuf_get_option()
+  [Sven Neumann]
+* Rename gdk_pixbuf_new_from_stream back to new_from_inline [Owen]
+* Automatically call setlocale(), unless explicitly disabled [Owen]
+* Property addition to various widgets [Michael Meeks, Owen]
+* Support building with automake-1.4 [James]
+* Make GtkRadioButton groups act as a single focus point [Owen]
+* Move gdk_window_lookup etc. to be cross-platform [Matthias]
+* Draw spinbuttons variably sized [Kristian]
+* Separate GdkAtom out from X atoms for compatibility with future
+  multihead changes [Owen]
+* Require gdk_threads_init() to be explicitly called instead
+  of piggybacking off of g_thread_init(). [Owen]
+* Improvements to text-view/label/entry popup menus [Damian, Jacob, Owen]
+* Bug fixes and cleanup [Matthias, others]
+
+Other Contributors:
+  Mark McLoughin, Mikael Hermansson, Soeren Sandmann, Anders Carlsson,
+  Tim Janik, Murray Cumming, Hidetoshi Tajima, Padraig O'Briain, 
+  Hans Breuer, Vitaly Tishkov, Dov Grobgeld
+ 
+
+Overview of Changes in GTK+ 1.3.9
+=================================
+
+* Add editable text cells to GtkTreeView.
+  Keynav, drawing fixes in GtkTreeView [Jonathan Blandford]
+* Text widget no longer always has a \n in it. [Havoc Pennington]
+* Text widget bug fixes [Havoc, Dov Grobgeld, Hidetoshi Tajima]
+* Allow -1 for width/height in gdk_pixbuf_render_*(). [Matthias Clasen]
+* Minor fix for major resizing problems in recent releases [Owen Taylor]
+* Restore ability to set _set properties to TRUE for 
+  GtkCellRendererText, GtkTextTag [Owen]
+* Cursor drawing improvements [Owen]
+* Win32 fixes [Hans Breuer]
+* Mark various functions as deprecated or private.
+* Misc bug fixes, portability fixes, and cleanups.
+
+Other Contributors: 
+ Vitaly Tishkov, Christian Rose, Frank Belew, Jeff Franks, Sven Neumann,
+ Kristian Rietveld, Vitaly Tishkov, Joshua N. Pritikin, Matt Wilson, 
+ James Henstridge, Detlef Reichl
+
+Overview of Changes in GTK+ 1.3.8
+=================================
+
+* GtkTreeView and GtkTreeModel API cleanups/improvements [Jrb]
+* GtkOptionMenu scrollwheel support [Alex]
+* GtkModule search paths [Owen]
+* Documenatation updates [Havoc,Jrb]
+* Major Gdk cleanup [Owen]
+* Miscellaneous other fixes/cleanups
+
+Other Contributors:
+  Joshua N Pritikin, Padraig O'Briain, Jakub Steiner, Matthias Clasen,
+  Matt Wilson, James Henstridge
+
+Overview of Changes in GTK+ 1.3.7
+=================================
+
+* Many Pixbuf (loader) improvements [Matthias Clasen, Soeren Sandmann]
+* Added publically installed utility gdk-pixbuf-csource to generate
+  inlined pixbufs in C source code [Tim Janik]
+* Optional movement of button children on press [Soeren, Owen Taylor]
+* Interactive searching in GtkTreeView [Kristian Rietveld]
+* Sorting/ordering improvements for GtkTreeView [Kris, Jonathan Blandford]
+* Animation of expander motion for GtkTreeView [Anders Carlsson]
+* Lots of misc GtkTreeView fixes and improvements [Jonathan]
+* New/improved stock icons [Jakub Steiner] 
+* Code and API rework for window resizing [Havoc Pennington]
+* Converted accel groups to GObject [James Henstridge]
+* More property support improvements
+* Add facility for "secondary" buttons in 
+  GtkButtonBox/GtkDialog [Gregory Merchan]
+* Disentangled child visability from MAPPED state [Owen]
+* Plug/Socket improvements and port to the XEMBED protocol [Owen]
+* Added priorities for styles in RC files, 
+  support multiple parse contents [Owen]
+* Made GdkVisual and GdkDevice GObjects [Alexander Larsson]
+* Key binding improvements [Havoc]
+* Added GtkWidget::event-after signal since normal event handling
+  is now aborted as soon as a handler returned TRUE [Tim]
+* Dnd fixes and improved icon support [Owen]
+* Removed GtkPacker widget
+* Fixing missing paired getters/setters [Kris]
+* Nuked remaining GtkArg cruft, implemented container/child properties [Tim]
+* Added window grab groups [Owen]
+* Many frame buffer improvements [Alex]
+* Win32 fixes and improvements [Hans Breuer]
+* Warning fixes [Darin Adler]
+* Miscellaneous bug and API fixes [Matthias et. al]
+
+Other Contributors:
+  Joshua N Pritikin, Hidetoshi Tajima, Manish Singh, ERDI Gergo, Jens Finke,
+  Chema Celorio, Lee Mallabone, Vitaly Tishkov, Sebastian Wilhelmi,
+  Nicola Girardi, Sven Neumann, Padraig O'Briain, Michael Natterer,
+  Suresh Chandrasekharan, Jonas Borgström, Jay Cox, Michael Meeks,
+  Mathias Hasselmann, Peter Williams, Thomas Broyer, Kjartan Maraas,
+  Joel Becker, Jeff Franks, Brian Cameron, Skip Montanaro
+
+Overview of Changes in GTK+ 1.3.6
+=================================
+
+* Properly renders strikethrough text
+* win32 fixes
+* Added "scale" property to GtkTextTag and GtkCellRendererText to do 
+  relative font scaling
+* Added "format_value" signal to GtkScale to reformat value text
+* framebuffer fixes
+* Property support added to lots of widgets
+* Many GtkTreeView new features and API/implementation fixes
+* Lots of new_with_mnemonic() convenience functions
+* Change GtkImageMenuItem API to be more consistent/useful
+* Added lots of new stock items/icons
+* Rewrote GtkRange/GtkScale/GtkScrollbar, includes support for
+  enabling/disabling extra scrollbar stepper arrows in gtkrc so NeXT
+  themes won't need broken hacks
+* Convenience API for GtkRange similar to the one added to GtkSpinButton
+  a while back
+* Make menubar/toolbar work properly with xthickness/ythickness of 1 or 0, 
+  and move some attributes from program settings to user settings.
+  Allows nice 1-pixel-bevel themes.
+* Moved ::focus virtual function from GtkContainer to GtkWidget
+* Plenty of bug fixes
+
+Overview of Changes in GTK+ 1.3.5
+=================================
+
+* New default theme based on Raleigh theme for 1.2.x.
+* Dependency on the ATK library added as a step to
+  providing accessibility-enabling interfaces
+* XEMBED-based GtkPlug/GtkSocket now basically works.
+* Drag and drop of column headers in GtkTreeView
+* GtkColorSelector work: hooks for saving and propagating palette, UI tweaks,
+  and API sanitation
+* Key binding fixes
+* Configurable padding/spacing in a lot of places
+* Invisible text in GtkTextView fixed
+* SHM segments now created with a mode of 0600
+* Bug fixes
+
+Overview of Changes in GTK+ 1.3.4
+=================================
+
+* Win32 fixes
+* GtkTreeView improvements and fixes
+* Fix glib-2.0.m4
+* Miscellaneous bug fixes
+
+Overview of Changes in GTK+ 1.3.3
+=================================
+
+[ 5600 lines of ChangeLog ]
+
+* API cleanups
+* Win32 work (Tor, Hans Breuer)
+* Focus improvements (Owen)
+* Frame buffer improvements (Alex)
+* Work on GtkTextView (Havoc)
+* Much work on GtkTreeView (Jonathan)
+* Selectable labels (Havoc)
+* Converted many arguments to properties (Lee Mallabone, John Margaglione)
+* Add exact regions to GdkExposeEvent, propagate it. (Alex)
+* Added ability to have resize grips in status bars (etc.) using
+  _NET_WM_MOVERESIZE protocol. (Havoc)
+* Added mnemnonic mechanism to make setting underline accelerators
+  much easier. (Alex)
+* Add per-style property mechanism to allow themes to change 
+  geometry parameters. (Tim)
+* Added global settings mechanisms for settings such as double-click
+  time. (Tim, Owen)
+* Various support functions for new and old WM properties (Havoc, Alex)
+* Add TRUE-stops-returns for boolean-returning signals (Ron Steinke)
+
+Overview of Changes in GTK+ 1.3.2
+=================================
+
+GTK Core:
+
+* New stock-icon and stock-item system. Use themeable pixbufs in
+  dialogs, buttons, etc. [Havoc]
+* Theme engines reworked to use derivation and new object system. [Owen]
+* Added GtkClipboard object for simple selection handling. [Owen]
+* Make GtkEditable an interface, move implementation to GtkOldEditable for
+  compat. [Owen]
+* Better handling of default directionality. [Robert]
+* Use GSignal as backend for GtkSignal and other GObject stuff. [Tim]
+* Move theme engines to GTypePlugin. [Owen]
+
+GDK:
+
+* Beginning of implementation of client parts of new window manager spec. [Owen]
+* Make gdk_drawable_get_image() work with backing store. [Havoc]
+
+Widgets:
+
+* New text widget [Havoc]
+  - Adjustable tab handling.
+  - Ability to have scrolling side areas in new text widget for tabs/line numbers.
+  - Many cleanups and small improvements.
+* Improvements to submenu navigation [Nils Barth/David Santiago] and
+  scrolling menus. [Alex]
+* Simplification of progress bar API. [Havoc]
+* Make GtkImage a generic image-display widget. [Havoc]
+* New GtkTreeView tree widget. Model/view architecture, flexible rendering,
+  large datasets, etc. [Jonathan]
+* New GtkMessageBox widget for message display. [Havoc]
+* Allow labels to have contents set from XML-like markup language. [Havoc]
+* Make dialogs derive from GtkDialog and use stock buttons. [Havoc]
+
+Internationalization:
+
+* Proper character set conversion for clipboard/selection. [Owen]
+* New input method system via loadable modules; support on-the-spot
+  preedit in GtkEntry and new text widget; allow switching input methods
+  on the fly; include modules for XIM and demo Cyrillic-transliteration 
+  module. [Owen]
+* VIQR, Thai, and Inuktitut input methods. [Robert]
+* Convert po files to UTF-8. [Robert]
+
+gdk-pixbuf:
+
+* Full-alpha compositing for gdk-pixbuf on drawable. [Havoc]
+* Add simple saving to gdk-pixbuf. [David Welton/Havoc]
+* Add improved error handling with GError to gdk-pixbuf. [Havoc]
+
+Ports:
+
+* Much work on Win32 Port. [Tor/Hans]
+* Much work on Linux-FB Port. [Elliot/Alex]
+
+Misc:
+
+* Start of new gtk-demo demo program. [Owen/Jonathan]
+* Bug fixes and more bug fixes.
+
+
+Overview of Changes in GTK+ 1.3.1:
+
+* GTK+ now uses the Pango library for text manipulation. All
+  strings in GTK+ now are in Unicode, languages written
+  from right-to-left, and complex-text languages are now supported.
+* The gdk-pixbuf library for image loading and manipulation is 
+  has been integrated with GTK+.
+* The GTK+ object system has mostly been moved to GLib, separating
+  it from the GUI code. Many significant enhancements have been
+  made as part of this.
+* A new text widget is now included. This started as a port
+  of the Tk text widget, and includes such features of the Tk
+  text widget as tags, marks, and unicode text support. It
+  has been enhanced to support model-view operation and the
+  full power of Pango.
+* The GDK library has been extensively revised to support multiple
+  windowing systems. The only fully functional backend in 1.3.1
+  is the X11 backend, however, ports to Win32, Linux-framebuffer,
+  Nano-X, BeOS, and MacOS exist in various states of completion,
+  and at least some of these will be finished and integrated in 
+  before the final GTK+-2.0 release.
+* 32-bit coordinates are now supported throughout GDK and GTK+
+  (they are emulated where not supported by the windowing system.)
+* Many minor bug fixes and enhancements. Incompatible changes
+  are documented in docs/Changes-2.0.txt
+
+Overview of Changes in GTK+ 1.2.8:
+
+* GNU Make 3.79 bug workaround
+* FAQ and tutorial updates and improvements
+* Miscellaneous bug fixes: CList, Calendar, rc-files, FontSelection
+
+Overview of Changes in GTK+ 1.2.7:
+
+* More header cleanups.
+* Fixed activation bug for insensitive widgets.
+* Locale fixes to RC file parsing code.
+* Miscellaneous bugfixes for Item Factory, CList, CTree, X Selections,
+  HScale, VScale, Pixmap, Viewport, OptionMenu, Entry and Notebook.
+* Upgrade to libtool 1.3.4.
+
+Overview of Changes in GTK+ 1.2.6:
+
+* container queue_resize fixes
+* gtk[vh]scale: minor fixups
+* rename idle to idle_id in testgtk to avoid conflicts with 
+  broken libs
+* More consistent naming of gtkrc files
+* Added language support: ro, uk
+
+Overview of Changes in GTK+ 1.2.5:
+
+* more GtkCTree and GtkWindow bug fixes.
+* more redraw/resize queue fixes, better expose event
+  discarding code.
+* more miscellaneous bugs fixed
+* new configure.in option --disable-rebuilds to completely disable
+  rebuilds of autogenerated sources.
+* check for 5.002 now, to avoid failing autogeneration build rules due
+  to old perl versions.
+* fonts (and fontsets) are cached now.
+* more autogeneration make rules and dependency fixups, we should be
+  save with autogeneration up to make -j12 now ;)
+* new window position GTK_WIN_POS_CENTER_ALWAYS, which will recenter the
+  GtkWindow on every size change.
+* major rework of window manager hints handling code, fixed a bunch of
+  races with the new resizing code.
+* the new wm hints and resizing code is absolutely perfect and bug free now,
+  it only lacks testing ;)
+* fixed up various rc style memory problems.
+* gtk_widget_modify_style() now properly changes the style of realized widgets
+  and references the style passed into it. if people worked around this bug,
+  this will introduce a slight memory leak in their code.
+  The code should typically look like:
+            GtkRcStyle *rc_style = gtk_rc_style_new ();
+            [...]
+            gtk_widget_modify_style (widget, rc_style);
+            gtk_rc_style_unref (rc_style);
+* fix problems with positioning menus offscreen.
+* GtkText fixes for some crashes and drawing errors.
+* Better handling for unexpected window destroys in GDK and GTK+.
+  This should make it possible to use a GtkPlug and catch the
+  case where its parent socket is randomly killed.
+* FAQ updates.
+* FileSelection i18n patches, RadioButton fixups.
+* many translation improvements.
+* miscellaneous other bugs fixed.
+
+Overview of Changes in GTK+ 1.2.4:
+
+* DnD improvements (drags can be canceled with Esc now).
+* suppressed configure event reordering in Gdk.
+* rewrite of Gtk's configure event handling.
+* major improvements for the object argument system (Elena Devdariani).
+* major bugfixes for threading, GtkNotebook, GtkItemFactory, GtkCList and
+  GtkCTree.
+* tutorial/FAQ updates, new file generation.txt on autogenerated sources.
+* configure's --with-glib= is "officially" unsupported.
+* upgrade to libtool 1.3.3.
+* various buglets fixed.
+
+Overview of Changes in GTK+ 1.2.3:
+
+* Upgrade to libtool 1.3
+* Check for dgettext (for systems with old versions of GNU Gettext)
+* Many bug fixes (see ChangeLog for details)
+
+Overview of Changes in GTK+ 1.2.2:
+
+* Improved Dnd behaviour with Motif applications.
+* Bug fixes for the Gtk selection code.
+* Minor bug fixes to the Gdk Atom cache and Dnd code (with --display option).
+* Bug fixes and leak plugs for the Gdk IM code.
+* Added gtk_object_get() facility to retrieve object arguments easily.
+  The var args list expects ("arg-name", &value) pairs.
+* Fixed mapping for GdkInputCondition<->GIOCondition, this should fix
+  problems where closed pipes were no longer signaling GDK_INPUT_READ on
+  systems with a native poll().
+* Some cleanups to GtkLabel's memory allocation code (shouldn't leak memory
+  anymore).
+* We don't attempt to lookup xpm color "None" anymore, this should prevent
+  eXodus (commercial X windows server) from popping up a color dialog every
+  time a transparent pixmap is created.
+* Fixed bug where Gtk timeout/idle handlers would execute without the global
+  Gdk lock being held.
+* Other minor bug fixes.
+
+Overview of Changes in GTK+ 1.2.1:
+
+* Many Bug fixes have been applied to the menu and accelerator code.
+* GtkItemFactory can "adopt" foreign menu items now and manage their
+  accelerator installation. This is often required to get GtkItemFactory
+  like accelerator propagation between different windows with the same
+  menu hierarchy and for centralized parsing and saving of accelerators.
+* GtkCList/GtkCTree buttons should always display correctly now.
+* Miscellaneous other bug fixes.
+
+What's New in GTK+ 1.2.0 (since 1.0.x):
+
+* New widgets: GtkFontSelector, GtkPacker, GtkItemFactory, GtkCTree,
+  GtkInvisible, GtkCalendar, GtkLayout, GtkPlug, GtkSocket
+* Many new features and robustness for existing widgets
+* Theme support
+* New DND implementation
+* Internationalization of standard dialogs
+* New key binding system
+* Tearoff menus and menu accelerators
+* Wide character support for entry and text
+* Resizing code has been overhauled
+* Queued redraws of partial areas
+* Far better support for object arguments
+* Speed optimizations
+* Runtime loading of dynamic modules
+* Support for GLib log domains
+* Tutorial improvements
+* A bug fix or two
+
+Overview of Changes in GTK+ 1.1.16:
+
+* Major fixes and improvements for handlebox
+* A change to the way widget->requisition works. Now,
+  widget->requisition is always what the widget requested,
+  unmodified by the usize. See Changes-1.2.txt for details.
+  This correct various bugs with gtk_widget_set_usize().
+* Fixes for XIM on X11R5 systems
+* Don't allow cut-and-paste of text in password-style entries
+* --enable-debug is now on by default for the development release.
+  (When compiling for "production", use --enable-debug=minimum)
+* Handle systems where Helvetica is not present more gracefully
+* Fixes for memory leaks
+* CList and CTree fixes
+* Bug fixes for drawing problems. 
+* Miscellaneous bug fixes to GtkLabel, GtkCList, GtkCTree,
+  GtkColorsel, Focusing, DND
+* Tutorial improvements
+
+Overview of Changes in GTK+ 1.1.15:
+
+* Tutorial Updates
+* Added --libs gthread to gtk-config 
+* Bug fixes
+
+What is new in GTK+ 1.1.14:
+
+* Additions to docs/Changes-1.2.txt
+* Just warn when loading theme engine fails
+* CLAMP GtkScale digits to a meaningful range
+* GTK_LOCALDIR is now defined in a better fashion
+* New functions (feature freeze, we know...):
+    gtk_menu_set_title()
+    gtk_toggle_button_get_active()
+* Some locale fixups in gtkrc code
+* Fixes to make gtk_radio_button_set_group() keep only
+  one radio button in the group active
+* Foreign windows are now always treated as viewable; this fixes
+  a problem where updating didn't occur properly in GtkPlug
+* DND fixes for 64 bit architectures, and for specifying operations 
+  with modifier keys.
+* Major revisions to GtkLayout: avoid having to create window
+  for NO_WINDOW children, adjust allocations of children as 
+  scrolled so queued draws work, and a resize is queued instead
+  of allocating directly in a put() or move()
+
+What is new in GTK+ 1.1.13:
+
+* Dnd and selection bug fixes and memory purification.
+* Widget sensitivity fixups.
+* Tooltips windows are now named "gtk-tooltips" so rc file rules
+  can match tooltips windows. Fixed interaction of tooltips and NO_WINDOW
+  widgets.
+* Spin buttons now update their values upon value retrieval.
+* Overhaul of the resizing vs. redrawing logic to reduce redrawing needs
+  a lot. Gtk makes full use of the draw_area coalescing code now, which
+  got minorly improved as well.
+* Containers map their Gdk windows after their children now to reduce
+  expose event generation.
+* Gdk event queue fixups, this solves the double-click problems people were
+  recently having.
+* Account for the fact that GSource's are only properly reentrant from
+  within dispatch(), thus we don't do Gdk event processing from within
+  check() or prepare() anymore.
+* Rc files feature a bg_pixmap value of "<none>" now.
+* Improved session management support in Gdk.  
+* Automatic disabling of NLS if no gettext is found should work now.
+* Removed deprecated functions, docs/Changes-1.2.txt gives an overview.
+* Gtk+ development now requires GNU autoconf 2.13, GNU automake 1.4
+  and GNU libtool 1.2d.
+* More bug fixes all over the place.
+
+What is new in GTK+ 1.1.12:
+
+* Korean translation added
+* Fixed memory leaks
+* A few other bug fixes
+
+What is new in GTK+ 1.1.11:
+
+* Dutch, Japanese, Swedish, Polish, and Norwegian translations
+* Removed deprecated _interp variants: gtk_container_foreach_interp, 
+  gtk_idle_add_interp, gtk_timeout_add_interp, gtk_signal_connect_interp
+* Lots of cast corrections
+* Many fixes 
+
+What is new in GTK+ 1.1.9:
+
+* Check for broken glibc 2.0 mb functions and avoid them
+* Label and Entry display fixes 
+* Move main thread back to GDK, for locking when translating events
+* Bug fixes
+
+What is new in GTK+ 1.1.8:
+
+* Added support for gettext and the localization of the standard
+  dialogs.
+* Added line-wrapping for the label, and JUSTIFY_FILL
+* Support reordering via drag and drop in  CList and CTree.
+* Replaced GtkDrawWindow widget with a GTK_USER_DRAW flag
+* Extended gtkpaned API to support minimum sizes and proportional
+  resizing.
+* Changed the handling of shared memory segments so as to 
+  remove the need for GTK+ to set up signal handlers.
+* Re-implemented event loop in terms of the event loop
+  that has been added to GLib 1.1.8
+* Added 'grab_focus' signal to allow keyboard accelerators
+  for entries.
+* Load locale specific RC files if present.
+* Bug fixes.
+
+What is new in GTK+ 1.1.7:
+
+* Fixed memory mis-allocation in default files code
+* Various event handling fixes
+* Wide character support for entry and text
+* Destroy widgets _after_ propagating unrealize signals through 
+  widget hierarchy
+* Only build XIM-support if available
+* Tutorial and examples updates
+* Added gtk_drag_source_unset()
+
+What is new in GTK+ 1.1.6:
+
+* The signal system now features emission hooks with special semantics,
+  refer to the ChangeLog for this.
+* Minor? speedups and memory reductions to the emission handling of the
+  signal system.
+* _interp() function variants are deprecated now. the corresponding *_full()
+  variants are provided for a long time now.
+* Dnd abort timeout increased to 10 minutes.
+* GtkScrolledWindow inherits from GtkBin now.
+* GTK_POLICY_NEVER is implemented for scrolled windows now.
+* Lots of API clean ups.
+* Incremental freezing abilities.
+* Integrated widgets from the GNOME tree: GtkLayout, GtkPlug and GtkSocket.
+* New window functions for transient relationship, default size, and 
+  geometry hints
+* Default rc files are now read in (<sysconfdir/etc/gtkrc and ~/.gtkrc)
+  GTK_RC_FILES environment variable and functions are provided to configure
+  this behavior
+* Read doc/Changes-1.2.txt to properly adapt your code.
+* Bug Fixes.
+
+What is new in GTK+ 1.1.5:
+
+* Theme integration
+* Widget style modification is now handled through GtkRcStyles
+* GtkPixmaps now grey out pixmaps when insensitive
+* Notebook enhancements
+* Shadow configurability for menubars and handleboxes
+* DND enhancements
+* gtkfilesel now supports automounters better
+* Implementation of expose compression
+* Queued redraws of partial areas
+* Scrolledwindow (+Viewport) source incompatibilities, children that are added
+  to a scrolled window don't get an automatic viewport anymore. a convenience
+  function gtk_scrolled_window_add_with_viewport() is supplied for this task
+* Deprecated functions will now issue a message, informing the programmer about
+  the use of this function. These functions will get removed in future versions
+* Non-functional functions got removed entirely
+* gtk_widget_new() and gtk_object_new() will now auto-construct new objects.
+  A new function gtk_object_default_construct() is provided now which should
+  be called after every gtk_type_new() to perform the auto-construction
+* Improved argument support of several widgets
+* Bug Fixes
+
+What is new in GTK+ 1.1.3:
+
+* GtkCList/GtkCTree now have the ability to:
+    - hide/show individual columns
+    - disable/enable column resizing
+    - set min and max for column widths
+    - set expander style of the ctree
+    - set/get row and cell styles
+    - set spacing between tree expander and cell contents in ctree
+    - toggle auto_resize for columns
+* Must enhanced DND support, removed old DND code
+* Idle functions are now implemented via GHook, giving a slight speed
+  improvement
+* An environment variable GTK_MODULES which takes a colon separated
+  list of module names GTK+ will now automatically load at gtk_init() startup
+* GtkFontSel now has support for an extra 'base' filter
+* New function gdk_window_set_root_origin to get the real geometry taking
+  into account window manager offsets
+* New function gtk_text_set_line_wrap to toggle line wrapping
+* New function gtk_widget_add_events which safely adds additional
+  events to a widget's event mask
+* New function gdk_event_get_time to get the timestamp from a generic
+  event
+* New widget GtkCalendar
+* New widget GtkInvisible - InputOnly offscreen windows used for reliable
+  pointer grabs and selection handling in DND code
+* New functions gtk_object_remove_no_notify[_by_id] to remove a certain
+  data portion without invocation of its destroy notifier 
+* gtk_spin_button_construct is now deprecated, use gtk_spin_button_configure
+  instead 
+* gtk_clist_set_border is now deprecated, use gtk_clist_set_shadow_type 
+  instead
+* Removed functions gtk_object_set_data_destroy[_by_id] 
+* Documentation additions/updates 
+* HTML and plain text files are now included in the distribution
+* Bug fixes, typeness corrections, and general fixups
+
+What is new in GTK+ 1.1.2:
+
+* Gtk+ is now featuring runtime loading of dynamic modules via the
+  --gtk-modules= command line switch. such modules have to export a
+  G_MODULE_EXPORT void gtk_module_init (gint *argc, gchar ***argv);
+  function which will be invoked to initialize the module. since such
+  modules may create new widget types, they are always resident.
+* The tutorial has been updated again.
+* Changes to menus including tearoff menus and accelerators.
+* Better support for modal dialogs.
+* Removed CAN_FOCUS by default from scrollbars and button children of toolbar.
+* More improvements and fixes for GtkCList and GtkCTree (i.e. row sorting).
+* GtkCTree rows can be unselectable now.
+* The GtkCTree API has undergone major renames (see ChangeLog entry from Lars
+  Hamann on Tue Aug 18 00:29:13 1998).
+* A bunch of varargs functions changed to get va_lists working on systems that
+  implement va_lists as arrays.
+* Improvements to the gdkrgb code.
+* Improvements to Gdk color handling so we greatly reduce server traffic and
+  don't leak colors anymore.
+* Improved internal widget tree iterators (the GtkContainer::foreach signal
+  vanished because of this).
+* Option menus can have the keyboard focus now.
+* More fixups to the text widget.
+* GtkFileSelection should behave much more nicely in combination with AFS now.
+* Support for label underlining.
+* Support for GLib 1.1.3 log domains.
+* Documentation improvements.
+* Configuration fixes on various platforms.
+* Miscellaneous fixes to XInput support.
+* Build with shared library dependencies on Linux
+* Fix for a major bug in the type systems memory allocation code that could
+  cause random crashes.
+* Libtool update to version 1.2b.
+* Lots of bugfixes and cleanups again ;)
+
+
+What is new in GTK+ 1.1.1:
+
+* Tutorial updates and additions.
+* Key binding support for GtkListItems and GtkList.
+* Extended selection mode and autoscrolling for GtkLists.
+* A GtkCtree now operates on GtkCTreeNode* structures rather than GList*.
+* GtkCTreeNodes can now be created from GNode trees.
+* Bug fixes for GtkNotebook, GtkCList, GtkCombo and GdkWindow reparentation.
+
+
+What is new in GTK+ 1.1.0:
+
+* New widget GtkFontSelector.
+* New featureful progress bar.
+* New container widget GtkPacker.
+* New object GtkItemFactory, GtkMenuFactory is deprecated.
+* New key binding system, configurable via rcfiles, similar to styles.
+* New widget GtkCTree with drag selections and keyboard movement and
+  and horizontal scrolling. Features also implemented for GtkCList.
+* Significant speedups to widget creation and destruction through caching
+  colormap and visual queries to the XServer.
+* Speedups for type creation and especially gtk_type_is_a() checks.
+* Speedups in signal lookup, creation and emissions and connection handling.
+* Minor speedups with object data allocation and destruction.
+* Additions to the signal handling API (e.g. *_emitv).
+* Support for rc-file reparsing.
+* Resizing logic is now implemented on container widget basis, rather than
+  for toplevel GtkWindows only.
+* Buttons support relief styles now.
+* Some widgets are now allocated through memchunks to behave more memory wise.
+* Newly included file gtkfeatures.h which defines compatibility macros to
+  test for certain API features upon program compilation.
+* Child arguments support for container widgets.
+* Far better support for object arguments, revamp of the underlying
+  mechanism for speed and reusability. Child/object arguments don't
+  need to be preceded by the "GtkType::" portion anymore.
+* Removed GtkAcceleratorTable in favour of GtkAccelGroup, accelerator display
+  is now performed by a new widget GtkAccelLabel.
+* Overhaul of the resizing code. Resizing behaviour can now be specified
+  on GtkContainer basis, so the underlying algorithm isn't only available
+  for GtkWindows.
+* GtkTables are now fully resizable.
+* The GtkType system now supports an additional base class initialization
+  function.
+* GtkStyles and key bindings can now be looked up depending on the base
+  types of a widget, through a new keyword `class' in rc files.
+* GtkButton derives from GtkBin (finally).  
+* More descriptive error messages on rc parsing.  
+* Runtime information is available to query enum/flag definition values.
+* Upgrade to libtool-1.2
+* Legions of bug fixes, memory leaks, segfaults, of-by-something errors...
+  including those that already went into the 1.0.x branch.
+* A big bunch of features and cosmetic fixups that just got lost in
+  the masses of changesonfigure problem when cross-compiling

README.commits

@@ -1,72 +0,0 @@
-GTK+ is part of the GNOME git repository. At the current time, any
-person with write access to the GNOME repository, can make changes to
-GTK+. This is a good thing, in that it encourages many people to work
-on GTK+, and progress can be made quickly. However, GTK+ is a fairly
-large and complicated package that many other things depend on, so to
-avoid unnecessary breakage, and to take advantage of the knowledge
-about GTK+ that has been built up over the years, we'd like to ask
-people committing to GTK+ to follow a few rules:
-
-0) Ask first. If your changes are major, or could possibly break existing
-   code, you should always ask. If your change is minor and you've
-   been working on GTK+ for a while it probably isn't necessary
-   to ask. But when in doubt, ask. Even if your change is correct,
-   somebody may know a better way to do things.
-
-   If you are making changes to GTK+, you should be subscribed
-   to gtk-devel-list@gnome.org. (Subscription address:
-   gtk-devel-list-request@gnome.org.) This is a good place to ask
-   about intended changes.
-
-   #gtk+ on GIMPNet (irc.gimp.org, irc.us.gimp.org, irc.eu.gimp.org, ...)
-   is also a good place to find GTK+ developers to discuss changes with,
-   however, email to gtk-devel-list is the most certain and preferred
-   method.
-
-1) Ask _first_.
-
-2) With git, we no longer maintain a ChangeLog file, but you are expected
-   to produce a meaningful commit message. Changes without a sufficient
-   commit message will be reverted. See below for the expected format
-   of commit messages.
-
-Notes:
-
-* When developing larger features or complicated bug fixes, it is
-  advisable to work in a branch in your own cloned GTK+ repository.
-  You may even consider making your repository publically available
-  so that others can easily test and review your changes.
-
-* The expected format for git commit messages is as follows:
-
-=== begin example commit ===
-Short explanation of the commit
-
-Longer explanation explaining exactly what's changed, whether any
-external or private interfaces changed, what bugs were fixed (with bug
-tracker reference if applicable) and so forth. Be concise but not too brief.
-=== end example commit ===
-
-  - Always add a brief description of the commit to the _first_ line of
-    the commit and terminate by two newlines (it will work without the
-    second newline, but that is not nice for the interfaces).
-
-  - First line (the brief description) must only be one sentence and
-    should start with a capital letter unless it starts with a lowercase
-    symbol or identifier. Don't use a trailing period either. Don't exceed
-    72 characters.
-
-  - The main description (the body) is normal prose and should use normal
-    punctuation and capital letters where appropriate. Normally, for patches
-    sent to a mailing list it's copied from there.
-
-  - When committing code on behalf of others use the --author option, e.g.
-    git commit -a --author "Joe Coder <joe@coder.org>" and --signoff.
-
-
-Owen Taylor
-13 Aug 1998
-17 Apr 2001
-
-Matthias Clasen
-31 Mar 2009

README.md

@@ -1,15 +1,17 @@
-GTK+ — The GTK toolkit
-======================
+GTK — The GTK toolkit
+=====================
+
+[![Build Status](https://gitlab.gnome.org/GNOME/gtk/badges/master/build.svg)](https://gitlab.gnome.org/GNOME/gtk/pipelines)
 
 General information
 -------------------
 
-GTK+ is a multi-platform toolkit for creating graphical user interfaces.
-Offering a complete set of widgets, GTK+ is suitable for projects ranging
+GTK is a multi-platform toolkit for creating graphical user interfaces.
+Offering a complete set of widgets, GTK is suitable for projects ranging
 from small one-off projects to complete application suites.
 
-GTK+ is free software and part of the GNU Project. However, the
-licensing terms for GTK+, the GNU LGPL, allow it to be used by all
+GTK is free software and part of the GNU Project. However, the
+licensing terms for GTK, the GNU LGPL, allow it to be used by all
 developers, including those developing proprietary software, without any
 license fees or royalties.
 
@@ -29,13 +31,18 @@ Information about mailing lists can be found at
 
   - http://www.gtk.org/mailing-lists.php
 
+Nightly documentation can be found at
+  - Gtk: https://gnome.pages.gitlab.gnome.org/gtk/gtk/
+  - Gdk: https://gnome.pages.gitlab.gnome.org/gtk/gdk/
+  - Gsk: https://gnome.pages.gitlab.gnome.org/gtk/gsk/
+
 Building and installing
 -----------------------
 
-In order to build GTK+ you will need:
+In order to build GTK you will need:
 
-  - a C99 compatible compiler
-  - Python 3
+  - [a C99 compatible compiler](https://wiki.gnome.org/Projects/GLib/CompilerRequirements)
+  - [Python 3](https://www.python.org/)
   - [Meson](http://mesonbuild.com)
   - [Ninja](https://ninja-build.org)
 
@@ -59,10 +66,10 @@ If you are building the X11 backend, you will also need:
     - xrender
     - xi
     - xext
-    - xfixes (optional)
-    - xcursor (optional)
-    - xdamage (optional)
-    - xcomposite (optional)
+    - xfixes
+    - xcursor
+    - xdamage
+    - xcomposite
   - [atk-bridge-2.0](https://download.gnome.org/sources/at-spi2-atk)
 
 If you are building the Wayland backend, you will also need:
@@ -72,7 +79,7 @@ If you are building the Wayland backend, you will also need:
   - Wayland-cursor
   - Wayland-EGL
 
-Once you have all the necessary dependencies, you can build GTK+ by using
+Once you have all the necessary dependencies, you can build GTK by using
 Meson:
 
 ```sh
@@ -87,7 +94,7 @@ You can run the test suite using:
 $ meson test
 ```
 
-And, finally, you can install GTK+ using:
+And, finally, you can install GTK using:
 
 ```
 $ sudo ninja install
@@ -105,27 +112,27 @@ Or [online](https://developer.gnome.org/gtk4/stable/gtk-building.html)
 How to report bugs
 ------------------
 
-Bugs should be reported to the GNOME [bug tracking system](https://bugzilla.gnome.org/enter_bug.cgi?product=gtk%2b).
-You will need an account for yourself.
+Bugs should be reported on the [issues page](https://gitlab.gnome.org/GNOME/gtk/issues/new).
 
 In the bug report please include:
 
 * Information about your system. For instance:
 
-   - which version of GTK+ you are using
+   - which version of GTK you are using
    - what operating system and version
    - for Linux, which distribution
-   - if you built GTK+, the list of options used to configure the build
+   - if you built GTK, the list of options used to configure the build
 
   And anything else you think is relevant.
 
 * How to reproduce the bug.
 
-  If you can reproduce it with one of the test programs that are built
-  in the tests/ subdirectory, that will be most convenient.  Otherwise,
-  please include a short test program that exhibits the behavior.
-  As a last resort, you can also provide a pointer to a larger piece
-  of software that can be downloaded.
+  If you can reproduce it with one of the demo applications that are
+  built in the demos/ subdirectory, on one of the test programs that
+  are built in the tests/ subdirectory, that will be most convenient.
+  Otherwise, please include a short test program that exhibits the
+  behavior. As a last resort, you can also provide a pointer to a
+  larger piece of software that can be downloaded.
 
 * If the bug was a crash, the exact text that was printed out
   when the crash occurred.
@@ -133,28 +140,10 @@ In the bug report please include:
 * Further information such as stack traces may be useful, but
   is not necessary.
 
-
-Contributing
-------------
-
-Patches should also be submitted to the bug tracking system. If the patch
-fixes an existing bug, add the patch as an attachment to that bug report;
-otherwise, enter a new bug report that describes the patch, and attach the
-patch to that bug report.
-
-Patches should be in Git-formatted form. You should use `git format-patch`
-to generate them. We recommend using [git-bz](http://git.fishsoup.net/man/git-bz.html).
-
-For more information on the recommended workflow, please read
-[this wiki page](https://wiki.gnome.org/Git/WorkingWithPatches).
-
-Please, follow the `CODING_STYLE` document in order to conform to GTK+'s
-coding style when submitting a code contribution.
-
 Release notes
 -------------
 
-The release notes for GTK+ are part of the migration guide in the API
+The release notes for GTK are part of the migration guide in the API
 reference. See:
 
  - [3.x release notes](https://developer.gnome.org/gtk3/unstable/gtk-migrating-2-to-3.html)
@@ -163,7 +152,7 @@ reference. See:
 Licensing terms
 ---------------
 
-GTK+ is released under the terms of the GNU Lesser General Public License,
+GTK is released under the terms of the GNU Lesser General Public License,
 version 2.1 or, at your option, any later version, as published by the Free
 Software Foundation.
 

build-aux/flatpak/org.gtk.Demo4.json

@@ -0,0 +1,72 @@
+{
+    "app-id": "org.gtk.Demo4",
+    "runtime": "org.gnome.Platform",
+    "runtime-version": "master",
+    "sdk": "org.gnome.Sdk",
+    "command": "gtk4-demo",
+    "tags": ["devel", "development", "nightly"],
+    "desktop-file-name-prefix": "(Development) ",
+    "finish-args": [
+        "--device=dri",
+        "--share=ipc",
+        "--socket=fallback-x11",
+        "--socket=wayland",
+        "--talk-name=org.gtk.vfs", "--talk-name=org.gtk.vfs.*"
+    ],
+    "cleanup": [
+        "/include",
+        "/lib/pkgconfig", "/share/pkgconfig",
+        "/share/aclocal",
+        "/man", "/share/man", "/share/gtk-doc",
+        "*.la", ".a",
+        "/lib/girepository-1.0",
+        "/share/gir-1.0",
+        "/share/doc"
+    ],
+    "modules": [
+        {
+            "name" : "wayland",
+            "buildsystem" : "autotools",
+            "builddir" : true,
+            "config-opts" : [
+                "--disable-documentation"
+            ],
+            "sources" : [
+                {
+                    "type" : "git",
+                    "url" : "https://github.com/wayland-project/wayland.git"
+                }
+            ]
+        },
+        {
+            "name": "graphene",
+            "buildsystem": "meson",
+            "builddir": true,
+            "config-opts": [
+                "--libdir=/app/lib",
+                "-Dtests=false",
+                "-Dbenchmarks=false"
+            ],
+            "sources": [
+                {
+                    "type": "git",
+                    "url": "https://github.com/ebassi/graphene.git"
+                }
+            ]
+        },
+        {
+            "name": "gtk",
+            "buildsystem": "meson",
+            "builddir": true,
+            "config-opts": [
+                "--libdir=/app/lib"
+            ],
+            "sources": [
+                {
+                    "type": "git",
+                    "url": "https://gitlab.gnome.org/GNOME/gtk.git"
+                }
+            ]
+        }
+    ]
+}

build-aux/flatpak/org.gtk.IconBrowser4.json

@@ -0,0 +1,72 @@
+{
+    "app-id": "org.gtk.IconBrowser4",
+    "runtime": "org.gnome.Platform",
+    "runtime-version": "master",
+    "sdk": "org.gnome.Sdk",
+    "command": "gtk4-icon-browser",
+    "tags": ["devel", "development", "nightly"],
+    "desktop-file-name-prefix": "(Development) ",
+    "finish-args": [
+        "--device=dri",
+        "--share=ipc",
+        "--socket=fallback-x11",
+        "--socket=wayland",
+        "--talk-name=org.gtk.vfs", "--talk-name=org.gtk.vfs.*"
+    ],
+    "cleanup": [
+        "/include",
+        "/lib/pkgconfig", "/share/pkgconfig",
+        "/share/aclocal",
+        "/man", "/share/man", "/share/gtk-doc",
+        "*.la", ".a",
+        "/lib/girepository-1.0",
+        "/share/gir-1.0",
+        "/share/doc"
+    ],
+    "modules": [
+        {
+            "name" : "wayland",
+            "buildsystem" : "autotools",
+            "builddir" : true,
+            "config-opts" : [
+                "--disable-documentation"
+            ],
+            "sources" : [
+                {
+                    "type" : "git",
+                    "url" : "https://github.com/wayland-project/wayland.git"
+                }
+            ]
+        },
+        {
+            "name": "graphene",
+            "buildsystem": "meson",
+            "builddir": true,
+            "config-opts": [
+                "--libdir=/app/lib",
+                "-Dtests=false",
+                "-Dbenchmarks=false"
+            ],
+            "sources": [
+                {
+                    "type": "git",
+                    "url": "https://github.com/ebassi/graphene.git"
+                }
+            ]
+        },
+        {
+            "name": "gtk",
+            "buildsystem": "meson",
+            "builddir": true,
+            "config-opts": [
+                "--libdir=/app/lib"
+            ],
+            "sources": [
+                {
+                    "type": "git",
+                    "url": "https://gitlab.gnome.org/GNOME/gtk.git"
+                }
+            ]
+        }
+    ]
+}

build-aux/flatpak/org.gtk.WidgetFactory4.json

@@ -0,0 +1,72 @@
+{
+    "app-id": "org.gtk.WidgetFactory4",
+    "runtime": "org.gnome.Platform",
+    "runtime-version": "master",
+    "sdk": "org.gnome.Sdk",
+    "command": "gtk4-widget-factory",
+    "tags": ["devel", "development", "nightly"],
+    "desktop-file-name-prefix": "(Development) ",
+    "finish-args": [
+        "--device=dri",
+        "--share=ipc",
+        "--socket=fallback-x11",
+        "--socket=wayland",
+        "--talk-name=org.gtk.vfs", "--talk-name=org.gtk.vfs.*"
+    ],
+    "cleanup": [
+        "/include",
+        "/lib/pkgconfig", "/share/pkgconfig",
+        "/share/aclocal",
+        "/man", "/share/man", "/share/gtk-doc",
+        "*.la", ".a",
+        "/lib/girepository-1.0",
+        "/share/gir-1.0",
+        "/share/doc"
+    ],
+    "modules": [
+        {
+            "name" : "wayland",
+            "buildsystem" : "autotools",
+            "builddir" : true,
+            "config-opts" : [
+                "--disable-documentation"
+            ],
+            "sources" : [
+                {
+                    "type" : "git",
+                    "url" : "https://github.com/wayland-project/wayland.git"
+                }
+            ]
+        },
+        {
+            "name": "graphene",
+            "buildsystem": "meson",
+            "builddir": true,
+            "config-opts": [
+                "--libdir=/app/lib",
+                "-Dtests=false",
+                "-Dbenchmarks=false"
+            ],
+            "sources": [
+                {
+                    "type": "git",
+                    "url": "https://github.com/ebassi/graphene.git"
+                }
+            ]
+        },
+        {
+            "name": "gtk",
+            "buildsystem": "meson",
+            "builddir": true,
+            "config-opts": [
+                "--libdir=/app/lib"
+            ],
+            "sources": [
+                {
+                    "type": "git",
+                    "url": "https://gitlab.gnome.org/GNOME/gtk.git"
+                }
+            ]
+        }
+    ]
+}

build-aux/meson/post-install.py

@@ -0,0 +1,31 @@
+#!/usr/bin/env python3
+
+import os
+import sys
+import subprocess
+
+if 'DESTDIR' not in os.environ:
+    gtk_api_version = sys.argv[1]
+    gtk_abi_version = sys.argv[2]
+    gtk_libdir = sys.argv[3]
+    gtk_datadir = sys.argv[4]
+
+    gtk_moduledir = os.path.join(gtk_libdir, 'gtk-' + gtk_api_version, gtk_abi_version)
+    gtk_printmodule_dir = os.path.join(gtk_moduledir, 'printbackends')
+    gtk_immodule_dir = os.path.join(gtk_moduledir, 'immodules')
+
+    print('Compiling GSettings schemas...')
+    subprocess.call(['glib-compile-schemas',
+                    os.path.join(gtk_datadir, 'glib-2.0', 'schemas')])
+
+    print('Updating icon cache...')
+    subprocess.call(['gtk4-update-icon-cache', '-q', '-t' ,'-f',
+                    os.path.join(gtk_datadir, 'icons', 'hicolor')])
+
+    print('Updating module cache for print backends...')
+    os.makedirs(gtk_printmodule_dir, exist_ok=True)
+    subprocess.call(['gio-querymodules', gtk_printmodule_dir])
+
+    print('Updating module cache for input methods...')
+    os.makedirs(gtk_immodule_dir, exist_ok=True)
+    subprocess.call(['gio-querymodules', gtk_immodule_dir])

build-aux/meson/post-install.sh

@@ -1,21 +0,0 @@
-#!/bin/sh
-
-gtk_api_version=$1
-gtk_abi_version=$2
-gtk_libdir=$3
-gtk_datadir=$4
-
-# Package managers set this so we don't need to run
-if [ -z "$DESTDIR" ]; then
-  echo Compiling GSettings schemas...
-  glib-compile-schemas ${gtk_datadir}/glib-2.0/schemas
-
-  echo Updating desktop database...
-  update-desktop-database -q ${gtk_datadir}/applications
-
-  echo Updating icon cache...
-  gtk-update-icon-cache -q -t -f ${gtk_datadir}/icons/hicolor
-
-  echo Updating input method modules cache...
-  gtk4-query-immodules > ${gtk_libdir}/gtk-${gtk_api_version}/${gtk_abi_version}/immodules.cache
-fi

config.h.meson

@@ -24,9 +24,6 @@
 /* Define to 1 if you have the <crt_externs.h> header file. */
 #mesondefine HAVE_CRT_EXTERNS_H
 
-/* Define to 1 if CUPS 1.6 API is available */
-#mesondefine HAVE_CUPS_API_1_6
-
 /* Define to 1 if you have the `dcgettext' function. */
 #mesondefine HAVE_DCGETTEXT
 
@@ -41,6 +38,9 @@
 /* Define to 1 if you have the <dlfcn.h> header file. */
 #mesondefine HAVE_DLFCN_H
 
+/* Have the ffmpeg library */
+#mesondefine HAVE_FFMPEG
+
 /* Define to 1 if you have the <ftw.h> header file. */
 #mesondefine HAVE_FTW_H
 
@@ -53,6 +53,9 @@
 /* Define if gio-unix is available */
 #mesondefine HAVE_GIO_UNIX
 
+/* Define if GStreamer support is available */
+#mesondefine HAVE_GSTREAMER
+
 /* Define to 1 if you have the `httpGetAuthString' function. */
 #mesondefine HAVE_HTTPGETAUTHSTRING
 
@@ -280,6 +283,10 @@
 /* Define to 1 if linux/memfd.h exists */
 #mesondefine HAVE_LINUX_MEMFD_H
 
+#mesondefine HAVE_LINUX_INPUT_H
+
+#mesondefine HAVE_DEV_EVDEV_INPUT_H
+
 #mesondefine GTK_SYSCONFDIR
 
 #mesondefine GTK_LOCALEDIR
@@ -289,3 +296,9 @@
 #mesondefine GTK_LIBDIR
 
 #mesondefine GTK_PRINT_BACKENDS
+
+#mesondefine HAVE_HARFBUZZ
+
+#mesondefine HAVE_PANGOFT
+
+#mesondefine ISO_CODES_PREFIX

demos/gtk-demo/application.c

@@ -200,20 +200,20 @@ activate_about (GSimpleAction *action,
   };
 
   gtk_show_about_dialog (GTK_WINDOW (window),
-                         "program-name", "GTK+ Code Demos",
-                         "version", g_strdup_printf ("%s,\nRunning against GTK+ %d.%d.%d",
+                         "program-name", "GTK Code Demos",
+                         "version", g_strdup_printf ("%s,\nRunning against GTK %d.%d.%d",
                                                      PACKAGE_VERSION,
                                                      gtk_get_major_version (),
                                                      gtk_get_minor_version (),
                                                      gtk_get_micro_version ()),
-                         "copyright", "(C) 1997-2013 The GTK+ Team",
+                         "copyright", "(C) 1997-2013 The GTK Team",
                          "license-type", GTK_LICENSE_LGPL_2_1,
                          "website", "http://www.gtk.org",
-                         "comments", "Program to demonstrate GTK+ functions.",
+                         "comments", "Program to demonstrate GTK functions.",
                          "authors", authors,
                          "documenters", documentors,
-                         "logo-icon-name", "gtk4-demo",
-                         "title", "About GTK+ Code Demos",
+                         "logo-icon-name", "org.gtk.Demo4",
+                         "title", "About GTK Code Demos",
                          NULL);
 }
 
@@ -370,7 +370,7 @@ demo_application_init (DemoApplication *app)
   GSettings *settings;
   GAction *action;
 
-  settings = g_settings_new ("org.gtk.Demo");
+  settings = g_settings_new ("org.gtk.Demo4");
 
   g_action_map_add_action_entries (G_ACTION_MAP (app),
                                    app_entries, G_N_ELEMENTS (app_entries),
@@ -397,7 +397,7 @@ demo_application_window_store_state (DemoApplicationWindow *win)
 {
   GSettings *settings;
 
-  settings = g_settings_new ("org.gtk.Demo");
+  settings = g_settings_new ("org.gtk.Demo4");
   g_settings_set (settings, "window-size", "(ii)", win->width, win->height);
   g_settings_set_boolean (settings, "maximized", win->maximized);
   g_settings_set_boolean (settings, "fullscreen", win->fullscreen);
@@ -409,7 +409,7 @@ demo_application_window_load_state (DemoApplicationWindow *win)
 {
   GSettings *settings;
 
-  settings = g_settings_new ("org.gtk.Demo");
+  settings = g_settings_new ("org.gtk.Demo4");
   g_settings_get (settings, "window-size", "(ii)", &win->width, &win->height);
   win->maximized = g_settings_get_boolean (settings, "maximized");
   win->fullscreen = g_settings_get_boolean (settings, "fullscreen");
@@ -455,36 +455,49 @@ demo_application_window_constructed (GObject *object)
 }
 
 static void
-demo_application_window_size_allocate (GtkWidget           *widget,
-                                       const GtkAllocation *allocation,
-                                       int                  baseline,
-                                       GtkAllocation       *out_clip)
+demo_application_window_size_allocate (GtkWidget *widget,
+                                       int        width,
+                                       int        height,
+                                       int        baseline)
 {
   DemoApplicationWindow *window = (DemoApplicationWindow *)widget;
 
-  GTK_WIDGET_CLASS (demo_application_window_parent_class)->size_allocate (widget, allocation,
-                                                                          baseline, out_clip);
+  GTK_WIDGET_CLASS (demo_application_window_parent_class)->size_allocate (widget,
+                                                                          width,
+                                                                          height,
+                                                                          baseline);
 
   if (!window->maximized && !window->fullscreen)
     gtk_window_get_size (GTK_WINDOW (window), &window->width, &window->height);
 }
 
-static gboolean
-demo_application_window_state_event (GtkWidget           *widget,
-                                     GdkEventWindowState *event)
+static void
+surface_state_changed (GtkWidget *widget)
 {
   DemoApplicationWindow *window = (DemoApplicationWindow *)widget;
-  gboolean res = GDK_EVENT_PROPAGATE;
-  GdkWindowState changed, new_state;
+  GdkSurfaceState new_state;
 
-  if (GTK_WIDGET_CLASS (demo_application_window_parent_class)->window_state_event)
-    res = GTK_WIDGET_CLASS (demo_application_window_parent_class)->window_state_event (widget, event);
+  new_state = gdk_surface_get_state (gtk_widget_get_surface (widget));
+  window->maximized = (new_state & GDK_SURFACE_STATE_MAXIMIZED) != 0;
+  window->fullscreen = (new_state & GDK_SURFACE_STATE_FULLSCREEN) != 0;
+}
 
-  gdk_event_get_window_state ((GdkEvent *)event, &changed, &new_state);
-  window->maximized = (new_state & GDK_WINDOW_STATE_MAXIMIZED) != 0;
-  window->fullscreen = (new_state & GDK_WINDOW_STATE_FULLSCREEN) != 0;
+static void
+demo_application_window_realize (GtkWidget *widget)
+{
+  GTK_WIDGET_CLASS (demo_application_window_parent_class)->realize (widget);
 
-  return res;
+  g_signal_connect_swapped (gtk_widget_get_surface (widget), "notify::state",
+                            G_CALLBACK (surface_state_changed), widget);
+}
+
+static void
+demo_application_window_unrealize (GtkWidget *widget)
+{
+  g_signal_handlers_disconnect_by_func (gtk_widget_get_surface (widget),
+                                        surface_state_changed, widget);
+
+  GTK_WIDGET_CLASS (demo_application_window_parent_class)->unrealize (widget);
 }
 
 static void
@@ -506,7 +519,8 @@ demo_application_window_class_init (DemoApplicationWindowClass *class)
   object_class->constructed = demo_application_window_constructed;
 
   widget_class->size_allocate = demo_application_window_size_allocate;
-  widget_class->window_state_event = demo_application_window_state_event;
+  widget_class->realize = demo_application_window_realize;
+  widget_class->unrealize = demo_application_window_unrealize;
   widget_class->destroy = demo_application_window_destroy;
 
   gtk_widget_class_set_template_from_resource (widget_class, "/application_demo/application.ui");
@@ -527,7 +541,7 @@ main (int argc, char *argv[])
   GtkApplication *app;
 
   app = GTK_APPLICATION (g_object_new (demo_application_get_type (),
-                                       "application-id", "org.gtk.Demo2",
+                                       "application-id", "org.gtk.Demo4.App",
                                        "flags", G_APPLICATION_HANDLES_OPEN,
                                        NULL));
 

demos/gtk-demo/application.ui

@@ -1,4 +1,4 @@
-<?xml version="1.0"?>
+<?xml version="1.0" encoding="UTF-8"?>
 <interface>
   <template class="DemoApplicationWindow" parent="GtkApplicationWindow">
     <property name="title" translatable="yes">Application Class</property>
@@ -7,44 +7,37 @@
     <property name="icon-name">document-open</property>
     <child>
       <object class="GtkGrid">
-        <property name="visible">1</property>
         <child>
           <object class="GtkToolbar">
-            <property name="visible">1</property>
             <property name="hexpand">1</property>
             <style>
               <class name="primary-toolbar"/>
             </style>
             <child>
               <object class="GtkMenuToolButton" id="menutool">
-                <property name="visible">1</property>
                 <property name="icon-name">document-open</property>
               </object>
             </child>
             <child>
               <object class="GtkToolButton">
-                <property name="visible">1</property>
                 <property name="icon-name">application-exit</property>
                 <property name="action-name">app.quit</property>
               </object>
             </child>
             <child>
-              <object class="GtkSeparatorToolItem">
-                <property name="visible">1</property>
-              </object>
+              <object class="GtkSeparatorToolItem"/>
             </child>
             <child>
               <object class="GtkToolButton">
-                <property name="visible">1</property>
                 <property name="icon-name">applications-other</property>
                 <property name="action-name">win.logo</property>
               </object>
             </child>
+            <layout>
+              <property name="left-attach">0</property>
+              <property name="top-attach">0</property>
+            </layout>
           </object>
-          <packing>
-            <property name="left-attach">0</property>
-            <property name="top-attach">0</property>
-          </packing>
         </child>
         <child>
           <object class="GtkInfoBar" id="infobar">
@@ -54,7 +47,6 @@
               <object class="GtkBox" id="content_area">
                 <child>
                   <object class="GtkLabel" id="message">
-                    <property name="visible">1</property>
                     <property name="hexpand">1</property>
                   </object>
                 </child>
@@ -64,48 +56,44 @@
               <object class="GtkBox">
                 <child>
                   <object class="GtkButton">
-                    <property name="visible">1</property>
                     <property name="valign">center</property>
                     <property name="label" translatable="yes">_OK</property>
-                    <property name="use_underline">1</property>
+                    <property name="use-underline">1</property>
                     <signal name="clicked" handler="clicked_cb"/>
                   </object>
                 </child>
               </object>
             </child>
+            <layout>
+              <property name="left-attach">0</property>
+              <property name="top-attach">1</property>
+            </layout>
           </object>
-          <packing>
-            <property name="left-attach">0</property>
-            <property name="top-attach">1</property>
-          </packing>
         </child>
         <child>
           <object class="GtkScrolledWindow">
-            <property name="visible">1</property>
             <property name="shadow-type">in</property>
             <child>
               <object class="GtkTextView">
-                <property name="visible">1</property>
                 <property name="hexpand">1</property>
                 <property name="vexpand">1</property>
                 <property name="buffer">buffer</property>
               </object>
             </child>
+            <layout>
+              <property name="left-attach">0</property>
+              <property name="top-attach">2</property>
+            </layout>
           </object>
-          <packing>
-            <property name="left-attach">0</property>
-            <property name="top-attach">2</property>
-          </packing>
         </child>
         <child>
           <object class="GtkStatusbar" id="status">
             <property name="hexpand">1</property>
-            <property name="visible">1</property>
+            <layout>
+              <property name="left-attach">0</property>
+              <property name="top-attach">3</property>
+            </layout>
           </object>
-          <packing>
-            <property name="left-attach">0</property>
-            <property name="top-attach">3</property>
-          </packing>
         </child>
       </object>
     </child>

demos/gtk-demo/application_demo.c

@@ -52,7 +52,7 @@ do_application_demo (GtkWidget *toplevel)
 
   if (watch == 0)
     watch = g_bus_watch_name (G_BUS_TYPE_SESSION,
-                              "org.gtk.Demo2",
+                              "org.gtk.Demo4.App",
                               0,
                               on_name_appeared,
                               on_name_vanished,
@@ -80,8 +80,8 @@ do_application_demo (GtkWidget *toplevel)
   else
     {
       g_dbus_connection_call_sync (g_bus_get_sync (G_BUS_TYPE_SESSION, NULL, NULL),
-                                   "org.gtk.Demo2",
-                                   "/org/gtk/Demo2",
+                                   "org.gtk.Demo4.App",
+                                   "/org/gtk/Demo4/App",
                                    "org.gtk.Actions",
                                    "Activate",
                                    g_variant_new ("(sava{sv})", "quit", NULL, NULL),

demos/gtk-demo/appmenu.ui

@@ -1,6 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <interface>
-  <!-- interface-requires gtk+ 3.10 -->
   <menu id="appmenu">
     <section>
       <item>

demos/gtk-demo/assistant.c

@@ -80,7 +80,7 @@ on_entry_changed (GtkWidget *widget, gpointer data)
 
   page_number = gtk_assistant_get_current_page (assistant);
   current_page = gtk_assistant_get_nth_page (assistant, page_number);
-  text = gtk_entry_get_text (GTK_ENTRY (widget));
+  text = gtk_editable_get_text (GTK_EDITABLE (widget));
 
   if (text && *text)
     gtk_assistant_set_page_complete (assistant, current_page, TRUE);
@@ -96,12 +96,12 @@ create_page1 (GtkWidget *assistant)
   box = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 12);
 
   label = gtk_label_new ("You must fill out this entry to continue:");
-  gtk_box_pack_start (GTK_BOX (box), label);
+  gtk_container_add (GTK_CONTAINER (box), label);
 
   entry = gtk_entry_new ();
   gtk_entry_set_activates_default (GTK_ENTRY (entry), TRUE);
   gtk_widget_set_valign (entry, GTK_ALIGN_CENTER);
-  gtk_box_pack_start (GTK_BOX (box), entry);
+  gtk_container_add (GTK_CONTAINER (box), entry);
   g_signal_connect (G_OBJECT (entry), "changed",
                     G_CALLBACK (on_entry_changed), assistant);
 
@@ -119,7 +119,7 @@ create_page2 (GtkWidget *assistant)
 
   checkbutton = gtk_check_button_new_with_label ("This is optional data, you may continue "
                                                  "even if you do not check this");
-  gtk_box_pack_start (GTK_BOX (box), checkbutton);
+  gtk_container_add (GTK_CONTAINER (box), checkbutton);
 
   gtk_assistant_append_page (GTK_ASSISTANT (assistant), box);
   gtk_assistant_set_page_complete (GTK_ASSISTANT (assistant), box, TRUE);
@@ -170,8 +170,8 @@ do_assistant (GtkWidget *do_widget)
 
       gtk_window_set_default_size (GTK_WINDOW (assistant), -1, 300);
 
-      gtk_window_set_screen (GTK_WINDOW (assistant),
-                             gtk_widget_get_screen (do_widget));
+      gtk_window_set_display (GTK_WINDOW (assistant),
+                              gtk_widget_get_display (do_widget));
 
       create_page1 (assistant);
       create_page2 (assistant);

demos/gtk-demo/blendmodes.ui

@@ -2,390 +2,336 @@
 <interface>
   <requires lib="gtk+" version="3.20"/>
   <object class="GtkWindow" id="window">
-    <property name="can_focus">False</property>
-    <property name="resizable">False</property>
+    <property name="resizable">0</property>
     <property name="title">CSS Blend Modes</property>
-    <property name="default_width">400</property>
-    <property name="default_height">300</property>
+    <property name="default-width">400</property>
+    <property name="default-height">300</property>
     <child>
       <object class="GtkGrid">
-        <property name="visible">True</property>
-        <property name="can_focus">False</property>
-        <property name="row_spacing">12</property>
-        <property name="column_spacing">12</property>
+        <property name="row-spacing">12</property>
+        <property name="column-spacing">12</property>
         <child>
           <object class="GtkLabel">
-            <property name="visible">True</property>
-            <property name="can_focus">False</property>
             <property name="label" translatable="yes">Blend mode:</property>
             <property name="xalign">0</property>
             <style>
               <class name="dim-label"/>
             </style>
+            <layout>
+              <property name="left-attach">0</property>
+              <property name="top-attach">0</property>
+            </layout>
           </object>
-          <packing>
-            <property name="left_attach">0</property>
-            <property name="top_attach">0</property>
-          </packing>
         </child>
         <child>
           <object class="GtkScrolledWindow" id="scrolledwindow">
-            <property name="visible">True</property>
-            <property name="can_focus">True</property>
-            <property name="vexpand">True</property>
-            <property name="shadow_type">in</property>
-            <property name="min_content_width">150</property>
+            <property name="can-focus">1</property>
+            <property name="vexpand">1</property>
+            <property name="shadow-type">in</property>
+            <property name="min-content-width">150</property>
+            <layout>
+              <property name="left-attach">0</property>
+              <property name="top-attach">1</property>
+            </layout>
           </object>
-          <packing>
-            <property name="left_attach">0</property>
-            <property name="top_attach">1</property>
-          </packing>
         </child>
         <child>
           <object class="GtkStackSwitcher">
-            <property name="visible">True</property>
-            <property name="can_focus">False</property>
             <property name="halign">center</property>
-            <property name="hexpand">True</property>
+            <property name="hexpand">1</property>
             <property name="stack">stack</property>
+            <layout>
+              <property name="left-attach">1</property>
+              <property name="top-attach">0</property>
+            </layout>
           </object>
-          <packing>
-            <property name="left_attach">1</property>
-            <property name="top_attach">0</property>
-          </packing>
         </child>
         <child>
           <object class="GtkStack" id="stack">
-            <property name="visible">True</property>
-            <property name="can_focus">False</property>
-            <property name="hexpand">True</property>
-            <property name="vexpand">True</property>
-            <property name="hhomogeneous">False</property>
-            <property name="vhomogeneous">False</property>
-            <property name="transition_type">crossfade</property>
+            <property name="hexpand">1</property>
+            <property name="vexpand">1</property>
+            <property name="hhomogeneous">0</property>
+            <property name="vhomogeneous">0</property>
+            <property name="transition-type">crossfade</property>
             <child>
-              <object class="GtkGrid">
-                <property name="visible">True</property>
-                <property name="can_focus">False</property>
-                <property name="halign">center</property>
-                <property name="valign">center</property>
-                <property name="hexpand">False</property>
-                <property name="vexpand">True</property>
-                <property name="row_spacing">12</property>
-                <property name="column_spacing">12</property>
-                <child>
-                  <object class="GtkLabel">
-                    <property name="visible">True</property>
-                    <property name="can_focus">False</property>
-                    <property name="label" translatable="yes">Duck</property>
-                  </object>
-                  <packing>
-                    <property name="left_attach">0</property>
-                    <property name="top_attach">0</property>
-                  </packing>
-                </child>
-                <child>
-                  <object class="GtkLabel">
-                    <property name="visible">True</property>
-                    <property name="can_focus">False</property>
-                    <property name="label" translatable="yes">Background</property>
-                  </object>
-                  <packing>
-                    <property name="left_attach">1</property>
-                    <property name="top_attach">0</property>
-                  </packing>
-                </child>
-                <child>
-                  <object class="GtkImage">
-                    <property name="visible">True</property>
-                    <property name="can_focus">False</property>
-                    <style>
-                      <class name="duck"/>
-                    </style>
-                  </object>
-                  <packing>
-                    <property name="left_attach">0</property>
-                    <property name="top_attach">1</property>
-                  </packing>
-                </child>
-                <child>
-                  <object class="GtkImage">
-                    <property name="visible">True</property>
-                    <property name="can_focus">False</property>
-                    <style>
-                      <class name="gradient"/>
-                    </style>
-                  </object>
-                  <packing>
-                    <property name="left_attach">1</property>
-                    <property name="top_attach">1</property>
-                  </packing>
-                </child>
-                <child>
-                  <object class="GtkLabel">
-                    <property name="visible">True</property>
-                    <property name="can_focus">False</property>
-                    <property name="label" translatable="yes">
-Blended picture</property>
-                  </object>
-                  <packing>
-                    <property name="left_attach">0</property>
-                    <property name="top_attach">2</property>
-                    <property name="width">2</property>
-                  </packing>
-                </child>
-                <child>
-                  <object class="GtkImage">
-                    <property name="visible">True</property>
-                    <property name="can_focus">False</property>
-                    <property name="halign">center</property>
-                    <style>
-                      <class name="blend0"/>
-                    </style>
-                  </object>
-                  <packing>
-                    <property name="left_attach">0</property>
-                    <property name="top_attach">3</property>
-                    <property name="width">2</property>
-                  </packing>
-                </child>
-              </object>
-              <packing>
+              <object class="GtkStackPage">
                 <property name="name">page0</property>
                 <property name="title" translatable="yes">Ducky</property>
-              </packing>
+                <property name="child">
+                  <object class="GtkGrid">
+                    <property name="halign">center</property>
+                    <property name="valign">center</property>
+                    <property name="vexpand">1</property>
+                    <property name="row-spacing">12</property>
+                    <property name="column-spacing">12</property>
+                    <child>
+                      <object class="GtkLabel">
+                        <property name="label" translatable="yes">Duck</property>
+                        <layout>
+                          <property name="left-attach">0</property>
+                          <property name="top-attach">0</property>
+                        </layout>
+                      </object>
+                    </child>
+                    <child>
+                      <object class="GtkLabel">
+                        <property name="label" translatable="yes">Background</property>
+                        <layout>
+                          <property name="left-attach">1</property>
+                          <property name="top-attach">0</property>
+                        </layout>
+                      </object>
+                    </child>
+                    <child>
+                      <object class="GtkImage">
+                        <style>
+                          <class name="duck"/>
+                        </style>
+                        <layout>
+                          <property name="left-attach">0</property>
+                          <property name="top-attach">1</property>
+                        </layout>
+                      </object>
+                    </child>
+                    <child>
+                      <object class="GtkImage">
+                        <style>
+                          <class name="gradient"/>
+                        </style>
+                        <layout>
+                          <property name="left-attach">1</property>
+                          <property name="top-attach">1</property>
+                        </layout>
+                      </object>
+                    </child>
+                    <child>
+                      <object class="GtkLabel">
+                        <property name="label" translatable="yes">
+Blended picture</property>
+                        <layout>
+                          <property name="left-attach">0</property>
+                          <property name="top-attach">2</property>
+                          <property name="column-span">2</property>
+                        </layout>
+                      </object>
+                    </child>
+                    <child>
+                      <object class="GtkImage">
+                        <property name="halign">center</property>
+                        <style>
+                          <class name="blend0"/>
+                        </style>
+                        <layout>
+                          <property name="left-attach">0</property>
+                          <property name="top-attach">3</property>
+                          <property name="column-span">2</property>
+                        </layout>
+                      </object>
+                    </child>
+                  </object>
+                </property>
+              </object>
             </child>
             <child>
-              <object class="GtkGrid">
-                <property name="visible">True</property>
-                <property name="can_focus">False</property>
-                <property name="halign">center</property>
-                <property name="valign">center</property>
-                <property name="hexpand">False</property>
-                <property name="vexpand">True</property>
-                <property name="row_spacing">12</property>
-                <property name="column_spacing">12</property>
-                <child>
-                  <object class="GtkLabel">
-                    <property name="visible">True</property>
-                    <property name="can_focus">False</property>
-                    <property name="label" translatable="yes">Red</property>
-                  </object>
-                  <packing>
-                    <property name="left_attach">0</property>
-                    <property name="top_attach">0</property>
-                  </packing>
-                </child>
-                <child>
-                  <object class="GtkLabel">
-                    <property name="visible">True</property>
-                    <property name="can_focus">False</property>
-                    <property name="label" translatable="yes">Blue</property>
-                  </object>
-                  <packing>
-                    <property name="left_attach">1</property>
-                    <property name="top_attach">0</property>
-                  </packing>
-                </child>
-                <child>
-                  <object class="GtkImage">
-                    <property name="visible">True</property>
-                    <property name="can_focus">False</property>
-                    <style>
-                      <class name="red"/>
-                    </style>
-                  </object>
-                  <packing>
-                    <property name="left_attach">0</property>
-                    <property name="top_attach">1</property>
-                  </packing>
-                </child>
-                <child>
-                  <object class="GtkImage">
-                    <property name="visible">True</property>
-                    <property name="can_focus">False</property>
-                    <style>
-                      <class name="blue"/>
-                    </style>
-                  </object>
-                  <packing>
-                    <property name="left_attach">1</property>
-                    <property name="top_attach">1</property>
-                  </packing>
-                </child>
-                <child>
-                  <object class="GtkLabel">
-                    <property name="visible">True</property>
-                    <property name="can_focus">False</property>
-                    <property name="label" translatable="yes">
-Blended picture</property>
-                  </object>
-                  <packing>
-                    <property name="left_attach">0</property>
-                    <property name="top_attach">2</property>
-                    <property name="width">2</property>
-                  </packing>
-                </child>
-                <child>
-                  <object class="GtkImage">
-                    <property name="visible">True</property>
-                    <property name="can_focus">False</property>
-                    <property name="halign">center</property>
-                    <style>
-                      <class name="blend1"/>
-                    </style>
-                  </object>
-                  <packing>
-                    <property name="left_attach">0</property>
-                    <property name="top_attach">3</property>
-                    <property name="width">2</property>
-                  </packing>
-                </child>
-              </object>
-              <packing>
+              <object class="GtkStackPage">
                 <property name="name">page1</property>
                 <property name="title" translatable="yes">Blends</property>
-              </packing>
+                <property name="child">
+                  <object class="GtkGrid">
+                    <property name="halign">center</property>
+                    <property name="valign">center</property>
+                    <property name="vexpand">1</property>
+                    <property name="row-spacing">12</property>
+                    <property name="column-spacing">12</property>
+                    <child>
+                      <object class="GtkLabel">
+                        <property name="label" translatable="yes">Red</property>
+                        <layout>
+                          <property name="left-attach">0</property>
+                          <property name="top-attach">0</property>
+                        </layout>
+                      </object>
+                    </child>
+                    <child>
+                      <object class="GtkLabel">
+                        <property name="label" translatable="yes">Blue</property>
+                        <layout>
+                          <property name="left-attach">1</property>
+                          <property name="top-attach">0</property>
+                        </layout>
+                      </object>
+                    </child>
+                    <child>
+                      <object class="GtkImage">
+                        <style>
+                          <class name="red"/>
+                        </style>
+                        <layout>
+                          <property name="left-attach">0</property>
+                          <property name="top-attach">1</property>
+                        </layout>
+                      </object>
+                    </child>
+                    <child>
+                      <object class="GtkImage">
+                        <style>
+                          <class name="blue"/>
+                        </style>
+                        <layout>
+                          <property name="left-attach">1</property>
+                          <property name="top-attach">1</property>
+                        </layout>
+                      </object>
+                    </child>
+                    <child>
+                      <object class="GtkLabel">
+                        <property name="label" translatable="yes">
+Blended picture</property>
+                        <layout>
+                          <property name="left-attach">0</property>
+                          <property name="top-attach">2</property>
+                          <property name="column-span">2</property>
+                        </layout>
+                      </object>
+                    </child>
+                    <child>
+                      <object class="GtkImage">
+                        <property name="halign">center</property>
+                        <style>
+                          <class name="blend1"/>
+                        </style>
+                        <layout>
+                          <property name="left-attach">0</property>
+                          <property name="top-attach">3</property>
+                          <property name="column-span">2</property>
+                        </layout>
+                      </object>
+                    </child>
+                  </object>
+                </property>
+              </object>
             </child>
             <child>
-              <object class="GtkGrid">
-                <property name="visible">True</property>
-                <property name="can_focus">False</property>
-                <property name="halign">center</property>
-                <property name="valign">center</property>
-                <property name="hexpand">True</property>
-                <property name="vexpand">True</property>
-                <property name="row_spacing">6</property>
-                <property name="column_spacing">12</property>
-                <child>
-                  <object class="GtkImage">
-                    <property name="visible">True</property>
-                    <property name="can_focus">False</property>
-                    <style>
-                      <class name="cyan"/>
-                    </style>
-                  </object>
-                  <packing>
-                    <property name="left_attach">0</property>
-                    <property name="top_attach">1</property>
-                  </packing>
-                </child>
-                <child>
-                  <object class="GtkImage">
-                    <property name="visible">True</property>
-                    <property name="can_focus">False</property>
-                    <style>
-                      <class name="magenta"/>
-                    </style>
-                  </object>
-                  <packing>
-                    <property name="left_attach">1</property>
-                    <property name="top_attach">1</property>
-                  </packing>
-                </child>
-                <child>
-                  <object class="GtkImage">
-                    <property name="visible">True</property>
-                    <property name="can_focus">False</property>
-                    <style>
-                      <class name="yellow"/>
-                    </style>
-                  </object>
-                  <packing>
-                    <property name="left_attach">0</property>
-                    <property name="top_attach">3</property>
-                  </packing>
-                </child>
-                <child>
-                  <object class="GtkImage">
-                    <property name="visible">True</property>
-                    <property name="can_focus">False</property>
-                    <property name="halign">center</property>
-                    <style>
-                      <class name="blend2"/>
-                    </style>
-                  </object>
-                  <packing>
-                    <property name="left_attach">1</property>
-                    <property name="top_attach">3</property>
-                  </packing>
-                </child>
-                <child>
-                  <object class="GtkLabel">
-                    <property name="visible">True</property>
-                    <property name="can_focus">False</property>
-                    <property name="label" translatable="yes">Cyan</property>
-                    <property name="xalign">0</property>
-                    <style>
-                      <class name="dim-label"/>
-                    </style>
-                  </object>
-                  <packing>
-                    <property name="left_attach">0</property>
-                    <property name="top_attach">0</property>
-                  </packing>
-                </child>
-                <child>
-                  <object class="GtkLabel">
-                    <property name="visible">True</property>
-                    <property name="can_focus">False</property>
-                    <property name="label" translatable="yes">Magenta</property>
-                    <property name="xalign">0</property>
-                    <style>
-                      <class name="dim-label"/>
-                    </style>
-                  </object>
-                  <packing>
-                    <property name="left_attach">1</property>
-                    <property name="top_attach">0</property>
-                  </packing>
-                </child>
-                <child>
-                  <object class="GtkLabel">
-                    <property name="visible">True</property>
-                    <property name="can_focus">False</property>
-                    <property name="label" translatable="yes">Yellow</property>
-                    <property name="xalign">0</property>
-                    <style>
-                      <class name="dim-label"/>
-                    </style>
-                  </object>
-                  <packing>
-                    <property name="left_attach">0</property>
-                    <property name="top_attach">2</property>
-                  </packing>
-                </child>
-                <child>
-                  <object class="GtkLabel">
-                    <property name="visible">True</property>
-                    <property name="can_focus">False</property>
-                    <property name="label" translatable="yes">Blended picture</property>
-                    <property name="xalign">0</property>
-                    <attributes>
-                      <attribute name="weight" value="bold"/>
-                    </attributes>
-                  </object>
-                  <packing>
-                    <property name="left_attach">1</property>
-                    <property name="top_attach">2</property>
-                  </packing>
-                </child>
-              </object>
-              <packing>
+              <object class="GtkStackPage">
                 <property name="name">page2</property>
                 <property name="title" translatable="yes">CMYK</property>
-              </packing>
+                <property name="child">
+                  <object class="GtkGrid">
+                    <property name="halign">center</property>
+                    <property name="valign">center</property>
+                    <property name="hexpand">1</property>
+                    <property name="vexpand">1</property>
+                    <property name="row-spacing">6</property>
+                    <property name="column-spacing">12</property>
+                    <child>
+                      <object class="GtkImage">
+                        <style>
+                          <class name="cyan"/>
+                        </style>
+                        <layout>
+                          <property name="left-attach">0</property>
+                          <property name="top-attach">1</property>
+                        </layout>
+                      </object>
+                    </child>
+                    <child>
+                      <object class="GtkImage">
+                        <style>
+                          <class name="magenta"/>
+                        </style>
+                        <layout>
+                          <property name="left-attach">1</property>
+                          <property name="top-attach">1</property>
+                        </layout>
+                      </object>
+                    </child>
+                    <child>
+                      <object class="GtkImage">
+                        <style>
+                          <class name="yellow"/>
+                        </style>
+                        <layout>
+                          <property name="left-attach">0</property>
+                          <property name="top-attach">3</property>
+                        </layout>
+                      </object>
+                    </child>
+                    <child>
+                      <object class="GtkImage">
+                        <property name="halign">center</property>
+                        <style>
+                          <class name="blend2"/>
+                        </style>
+                        <layout>
+                          <property name="left-attach">1</property>
+                          <property name="top-attach">3</property>
+                        </layout>
+                      </object>
+                    </child>
+                    <child>
+                      <object class="GtkLabel">
+                        <property name="label" translatable="yes">Cyan</property>
+                        <property name="xalign">0</property>
+                        <style>
+                          <class name="dim-label"/>
+                        </style>
+                        <layout>
+                          <property name="left-attach">0</property>
+                          <property name="top-attach">0</property>
+                        </layout>
+                      </object>
+                    </child>
+                    <child>
+                      <object class="GtkLabel">
+                        <property name="label" translatable="yes">Magenta</property>
+                        <property name="xalign">0</property>
+                        <style>
+                          <class name="dim-label"/>
+                        </style>
+                        <layout>
+                          <property name="left-attach">1</property>
+                          <property name="top-attach">0</property>
+                        </layout>
+                      </object>
+                    </child>
+                    <child>
+                      <object class="GtkLabel">
+                        <property name="label" translatable="yes">Yellow</property>
+                        <property name="xalign">0</property>
+                        <style>
+                          <class name="dim-label"/>
+                        </style>
+                        <layout>
+                          <property name="left-attach">0</property>
+                          <property name="top-attach">2</property>
+                        </layout>
+                      </object>
+                    </child>
+                    <child>
+                      <object class="GtkLabel">
+                        <property name="label" translatable="yes">Blended picture</property>
+                        <property name="xalign">0</property>
+                        <attributes>
+                          <attribute name="weight" value="bold"></attribute>
+                        </attributes>
+                        <layout>
+                          <property name="left-attach">1</property>
+                          <property name="top-attach">2</property>
+                        </layout>
+                      </object>
+                    </child>
+                  </object>
+                </property>
+              </object>
             </child>
+            <layout>
+              <property name="left-attach">1</property>
+              <property name="top-attach">1</property>
+            </layout>
           </object>
-          <packing>
-            <property name="left_attach">1</property>
-            <property name="top_attach">1</property>
-          </packing>
         </child>
       </object>
     </child>
-    <child type="titlebar">
-      <placeholder/>
-    </child>
+    <child type="titlebar"/>
   </object>
 </interface>

demos/gtk-demo/bluroverlay.c

@@ -0,0 +1,482 @@
+/*
+ * bluroverlay.c
+ * This file is part of gtk
+ *
+ * Copyright (C) 2011 - Ignacio Casal Quinteiro, Mike Krüger
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "bluroverlay.h"
+
+/*
+ * This is a cut-down copy of gtkoverlay.c with a custom snapshot
+ * function that support a limited form of blur-under.
+ */
+typedef struct _BlurOverlayChild BlurOverlayChild;
+
+struct _BlurOverlayChild
+{
+  double blur;
+};
+
+enum {
+  GET_CHILD_POSITION,
+  LAST_SIGNAL
+};
+
+static guint signals[LAST_SIGNAL] = { 0 };
+static GQuark child_data_quark = 0;
+
+G_DEFINE_TYPE (BlurOverlay, blur_overlay, GTK_TYPE_BIN)
+
+static void
+blur_overlay_set_overlay_child (GtkWidget       *widget,
+                               BlurOverlayChild *child_data)
+{
+  g_object_set_qdata_full (G_OBJECT (widget), child_data_quark, child_data, g_free);
+}
+
+static BlurOverlayChild *
+blur_overlay_get_overlay_child (GtkWidget *widget)
+{
+  return (BlurOverlayChild *) g_object_get_qdata (G_OBJECT (widget), child_data_quark);
+}
+
+static void
+blur_overlay_measure (GtkWidget      *widget,
+                     GtkOrientation  orientation,
+                     int             for_size,
+                     int            *minimum,
+                     int            *natural,
+                     int            *minimum_baseline,
+                     int            *natural_baseline)
+{
+  GtkWidget *child;
+
+  for (child = gtk_widget_get_first_child (widget);
+       child != NULL;
+       child = gtk_widget_get_next_sibling (child))
+    {
+      int child_min, child_nat, child_min_baseline, child_nat_baseline;
+
+      gtk_widget_measure (child,
+                          orientation,
+                          for_size,
+                          &child_min, &child_nat,
+                          &child_min_baseline, &child_nat_baseline);
+
+      *minimum = MAX (*minimum, child_min);
+      *natural = MAX (*natural, child_nat);
+      if (child_min_baseline > -1)
+        *minimum_baseline = MAX (*minimum_baseline, child_min_baseline);
+      if (child_nat_baseline > -1)
+        *natural_baseline = MAX (*natural_baseline, child_nat_baseline);
+    }
+}
+
+static void
+blur_overlay_compute_child_allocation (BlurOverlay      *overlay,
+                                      GtkWidget       *widget,
+                                      BlurOverlayChild *child,
+                                      GtkAllocation   *widget_allocation)
+{
+  GtkAllocation allocation;
+  gboolean result;
+
+  g_signal_emit (overlay, signals[GET_CHILD_POSITION],
+                 0, widget, &allocation, &result);
+
+  widget_allocation->x = allocation.x;
+  widget_allocation->y = allocation.y;
+  widget_allocation->width = allocation.width;
+  widget_allocation->height = allocation.height;
+}
+
+static GtkAlign
+effective_align (GtkAlign         align,
+                 GtkTextDirection direction)
+{
+  switch (align)
+    {
+    case GTK_ALIGN_START:
+      return direction == GTK_TEXT_DIR_RTL ? GTK_ALIGN_END : GTK_ALIGN_START;
+    case GTK_ALIGN_END:
+      return direction == GTK_TEXT_DIR_RTL ? GTK_ALIGN_START : GTK_ALIGN_END;
+    case GTK_ALIGN_FILL:
+    case GTK_ALIGN_CENTER:
+    case GTK_ALIGN_BASELINE:
+    default:
+      return align;
+    }
+}
+
+static void
+blur_overlay_child_update_style_classes (BlurOverlay *overlay,
+                                         GtkWidget *child,
+                                         GtkAllocation *child_allocation)
+{
+  int width, height;
+  GtkAlign valign, halign;
+  gboolean is_left, is_right, is_top, is_bottom;
+  gboolean has_left, has_right, has_top, has_bottom;
+  GtkStyleContext *context;
+
+  context = gtk_widget_get_style_context (child);
+  has_left = gtk_style_context_has_class (context, GTK_STYLE_CLASS_LEFT);
+  has_right = gtk_style_context_has_class (context, GTK_STYLE_CLASS_RIGHT);
+  has_top = gtk_style_context_has_class (context, GTK_STYLE_CLASS_TOP);
+  has_bottom = gtk_style_context_has_class (context, GTK_STYLE_CLASS_BOTTOM);
+
+  is_left = is_right = is_top = is_bottom = FALSE;
+
+  width = gtk_widget_get_width (GTK_WIDGET (overlay));
+  height = gtk_widget_get_height (GTK_WIDGET (overlay));
+
+  halign = effective_align (gtk_widget_get_halign (child),
+                            gtk_widget_get_direction (child));
+
+  if (halign == GTK_ALIGN_START)
+    is_left = (child_allocation->x == 0);
+  else if (halign == GTK_ALIGN_END)
+    is_right = (child_allocation->x + child_allocation->width == width);
+
+  valign = gtk_widget_get_valign (child);
+
+  if (valign == GTK_ALIGN_START)
+    is_top = (child_allocation->y == 0);
+  else if (valign == GTK_ALIGN_END)
+    is_bottom = (child_allocation->y + child_allocation->height == height);
+
+  if (has_left && !is_left)
+    gtk_style_context_remove_class (context, GTK_STYLE_CLASS_LEFT);
+  else if (!has_left && is_left)
+    gtk_style_context_add_class (context, GTK_STYLE_CLASS_LEFT);
+
+  if (has_right && !is_right)
+    gtk_style_context_remove_class (context, GTK_STYLE_CLASS_RIGHT);
+  else if (!has_right && is_right)
+    gtk_style_context_add_class (context, GTK_STYLE_CLASS_RIGHT);
+
+  if (has_top && !is_top)
+    gtk_style_context_remove_class (context, GTK_STYLE_CLASS_TOP);
+  else if (!has_top && is_top)
+    gtk_style_context_add_class (context, GTK_STYLE_CLASS_TOP);
+
+  if (has_bottom && !is_bottom)
+    gtk_style_context_remove_class (context, GTK_STYLE_CLASS_BOTTOM);
+  else if (!has_bottom && is_bottom)
+    gtk_style_context_add_class (context, GTK_STYLE_CLASS_BOTTOM);
+}
+
+static void
+blur_overlay_child_allocate (BlurOverlay      *overlay,
+                            GtkWidget       *widget,
+                            BlurOverlayChild *child)
+{
+  GtkAllocation child_allocation;
+
+  if (!gtk_widget_get_visible (widget))
+    return;
+
+  blur_overlay_compute_child_allocation (overlay, widget, child, &child_allocation);
+
+  blur_overlay_child_update_style_classes (overlay, widget, &child_allocation);
+  gtk_widget_size_allocate (widget, &child_allocation, -1);
+}
+
+static void
+blur_overlay_size_allocate (GtkWidget *widget,
+                           int        width,
+                           int        height,
+                           int        baseline)
+{
+  BlurOverlay *overlay = BLUR_OVERLAY (widget);
+  GtkWidget *child;
+  GtkWidget *main_widget;
+
+  main_widget = gtk_bin_get_child (GTK_BIN (overlay));
+  if (main_widget && gtk_widget_get_visible (main_widget))
+    gtk_widget_size_allocate (main_widget,
+                              &(GtkAllocation) {
+                                0, 0,
+                                width, height
+                              }, -1);
+
+  for (child = gtk_widget_get_first_child (widget);
+       child != NULL;
+       child = gtk_widget_get_next_sibling (child))
+    {
+      if (child != main_widget)
+        {
+          BlurOverlayChild *child_data = blur_overlay_get_overlay_child (child);
+          blur_overlay_child_allocate (overlay, child, child_data);
+        }
+    }
+}
+
+static gboolean
+blur_overlay_get_child_position (BlurOverlay    *overlay,
+                                 GtkWidget      *widget,
+                                 GtkAllocation  *alloc)
+{
+  GtkRequisition min, req;
+  GtkAlign halign;
+  GtkTextDirection direction;
+  int width, height;
+
+  gtk_widget_get_preferred_size (widget, &min, &req);
+  width = gtk_widget_get_width (GTK_WIDGET (overlay));
+  height = gtk_widget_get_height (GTK_WIDGET (overlay));
+
+  alloc->x = 0;
+  alloc->width = MAX (min.width, MIN (width, req.width));
+
+  direction = gtk_widget_get_direction (widget);
+
+  halign = gtk_widget_get_halign (widget);
+  switch (effective_align (halign, direction))
+    {
+    case GTK_ALIGN_START:
+      /* nothing to do */
+      break;
+    case GTK_ALIGN_FILL:
+      alloc->width = MAX (alloc->width, width);
+      break;
+    case GTK_ALIGN_CENTER:
+      alloc->x += width / 2 - alloc->width / 2;
+      break;
+    case GTK_ALIGN_END:
+      alloc->x += width - alloc->width;
+      break;
+    case GTK_ALIGN_BASELINE:
+    default:
+      g_assert_not_reached ();
+      break;
+    }
+
+  alloc->y = 0;
+  alloc->height = MAX  (min.height, MIN (height, req.height));
+
+  switch (gtk_widget_get_valign (widget))
+    {
+    case GTK_ALIGN_START:
+      /* nothing to do */
+      break;
+    case GTK_ALIGN_FILL:
+      alloc->height = MAX (alloc->height, height);
+      break;
+    case GTK_ALIGN_CENTER:
+      alloc->y += height / 2 - alloc->height / 2;
+      break;
+    case GTK_ALIGN_END:
+      alloc->y += height - alloc->height;
+      break;
+    case GTK_ALIGN_BASELINE:
+    default:
+      g_assert_not_reached ();
+      break;
+    }
+
+  return TRUE;
+}
+
+static void
+blur_overlay_add (GtkContainer *container,
+                  GtkWidget    *widget)
+{
+  BlurOverlay *overlay = BLUR_OVERLAY (container);
+  gtk_widget_insert_after (widget, GTK_WIDGET (container), NULL);
+  overlay->main_widget = widget;  
+}
+
+static void
+blur_overlay_remove (GtkContainer *container,
+                     GtkWidget    *widget)
+{
+  BlurOverlay *overlay = BLUR_OVERLAY (container);
+  gtk_widget_unparent (widget);
+  if (overlay->main_widget == widget)
+    overlay->main_widget = NULL;
+}
+
+static void
+blur_overlay_forall (GtkContainer *overlay,
+                    GtkCallback   callback,
+                    gpointer      callback_data)
+{
+  GtkWidget *child;
+
+  child = gtk_widget_get_first_child (GTK_WIDGET (overlay));
+  while (child != NULL)
+    {
+      GtkWidget *next = gtk_widget_get_next_sibling (child);
+
+      (* callback) (child, callback_data);
+
+      child = next;
+    }
+}
+
+static void
+blur_overlay_snapshot (GtkWidget   *widget,
+                      GtkSnapshot *snapshot)
+{
+  GtkWidget *main_widget;
+  GskRenderNode *main_widget_node = NULL;
+  GtkWidget *child;
+  GtkAllocation main_alloc;
+  cairo_region_t *clip = NULL;
+  int i;
+
+  main_widget = BLUR_OVERLAY (widget)->main_widget;
+  gtk_widget_get_allocation (widget, &main_alloc);
+
+  for (child = gtk_widget_get_first_child (widget);
+       child != NULL;
+       child = gtk_widget_get_next_sibling (child))
+    {
+      BlurOverlayChild *child_info = blur_overlay_get_overlay_child (child);
+      double blur = 0;
+      if (child_info)
+        blur = child_info->blur;
+
+      if (blur > 0)
+        {
+          GtkAllocation alloc;
+          graphene_rect_t bounds;
+
+          if (main_widget_node == NULL)
+            {
+              GtkSnapshot *child_snapshot;
+
+              child_snapshot = gtk_snapshot_new ();
+              gtk_widget_snapshot_child (widget, main_widget, child_snapshot);
+              main_widget_node = gtk_snapshot_free_to_node (child_snapshot);
+            }
+
+          gtk_widget_get_allocation (child, &alloc);
+          graphene_rect_init (&bounds, alloc.x, alloc.y, alloc.width, alloc.height);
+          gtk_snapshot_push_blur (snapshot, blur);
+          gtk_snapshot_push_clip (snapshot, &bounds);
+          gtk_snapshot_append_node (snapshot, main_widget_node);
+          gtk_snapshot_pop (snapshot);
+          gtk_snapshot_pop (snapshot);
+
+          if (clip == NULL)
+            {
+              cairo_rectangle_int_t rect;
+              rect.x = rect.y = 0;
+              rect.width = main_alloc.width;
+              rect.height = main_alloc.height;
+              clip = cairo_region_create_rectangle (&rect);
+            }
+          cairo_region_subtract_rectangle (clip, (cairo_rectangle_int_t *)&alloc);
+        }
+    }
+
+  if (clip == NULL)
+    {
+      for (child = gtk_widget_get_first_child (widget);
+           child != NULL;
+           child = gtk_widget_get_next_sibling (child))
+        {
+          gtk_widget_snapshot_child (widget, child, snapshot);
+        }
+      return;
+    }
+
+  for (i = 0; i < cairo_region_num_rectangles (clip); i++)
+    {
+      cairo_rectangle_int_t rect;
+      graphene_rect_t bounds;
+
+      cairo_region_get_rectangle (clip, i, &rect);
+      graphene_rect_init (&bounds, rect.x, rect.y, rect.width, rect.height);
+      gtk_snapshot_push_clip (snapshot, &bounds);
+      gtk_snapshot_append_node (snapshot, main_widget_node);
+      gtk_snapshot_pop (snapshot);
+    }
+
+  cairo_region_destroy (clip);
+
+  for (child = gtk_widget_get_first_child (widget);
+       child != NULL;
+       child = gtk_widget_get_next_sibling (child))
+    {
+      if (child != main_widget)
+        gtk_widget_snapshot_child (widget, child, snapshot);
+    }
+
+  gsk_render_node_unref (main_widget_node);
+}
+
+static void
+blur_overlay_class_init (BlurOverlayClass *klass)
+{
+  GObjectClass *object_class = G_OBJECT_CLASS (klass);
+  GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
+  GtkContainerClass *container_class = GTK_CONTAINER_CLASS (klass);
+
+  widget_class->measure = blur_overlay_measure;
+  widget_class->size_allocate = blur_overlay_size_allocate;
+  widget_class->snapshot = blur_overlay_snapshot;
+
+  container_class->add = blur_overlay_add;
+  container_class->remove = blur_overlay_remove;
+  container_class->forall = blur_overlay_forall;
+
+  klass->get_child_position = blur_overlay_get_child_position;
+
+  signals[GET_CHILD_POSITION] =
+    g_signal_new ("get-child-position",
+                  G_TYPE_FROM_CLASS (object_class),
+                  G_SIGNAL_RUN_LAST,
+                  G_STRUCT_OFFSET (BlurOverlayClass, get_child_position),
+                  g_signal_accumulator_true_handled, NULL,
+                  NULL,
+                  G_TYPE_BOOLEAN, 2,
+                  GTK_TYPE_WIDGET,
+                  GDK_TYPE_RECTANGLE | G_SIGNAL_TYPE_STATIC_SCOPE);
+
+  child_data_quark = g_quark_from_static_string ("gtk-overlay-child-data");
+
+  gtk_widget_class_set_css_name (widget_class, "overlay");
+}
+
+static void
+blur_overlay_init (BlurOverlay *overlay)
+{
+  gtk_widget_set_has_surface (GTK_WIDGET (overlay), FALSE);
+}
+
+GtkWidget *
+blur_overlay_new (void)
+{
+  return g_object_new (BLUR_TYPE_OVERLAY, NULL);
+}
+
+void
+blur_overlay_add_overlay (BlurOverlay *overlay,
+                          GtkWidget   *widget,
+                          double       blur)
+{
+  BlurOverlayChild *child = g_new0 (BlurOverlayChild, 1);
+
+  gtk_widget_insert_before (widget, GTK_WIDGET (overlay), NULL);
+
+  child->blur = blur;
+
+  blur_overlay_set_overlay_child (widget, child);
+}

demos/gtk-demo/bluroverlay.h

@@ -0,0 +1,65 @@
+/*
+ * bluroverlay.h
+ * This file is part of gtk
+ *
+ * Copyright (C) 2011 - Ignacio Casal Quinteiro, Mike Krüger
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef __BLUR_OVERLAY_H__
+#define __BLUR_OVERLAY_H__
+
+#include <gtk/gtk.h>
+
+G_BEGIN_DECLS
+
+#define BLUR_TYPE_OVERLAY             (blur_overlay_get_type ())
+#define BLUR_OVERLAY(obj)             (G_TYPE_CHECK_INSTANCE_CAST ((obj), BLUR_TYPE_OVERLAY, BlurOverlay))
+#define BLUR_OVERLAY_CLASS(klass)     (G_TYPE_CHECK_CLASS_CAST ((klass), BLUR_TYPE_OVERLAY, BlurOverlayClass))
+#define BLUR_IS_OVERLAY(obj)          (G_TYPE_CHECK_INSTANCE_TYPE ((obj), BLUR_TYPE_OVERLAY))
+#define BLUR_IS_OVERLAY_CLASS(klass)  (G_TYPE_CHECK_CLASS_TYPE ((klass), BLUR_TYPE_OVERLAY))
+#define BLUR_OVERLAY_GET_CLASS(obj)   (G_TYPE_INSTANCE_GET_CLASS ((obj), BLUR_TYPE_OVERLAY, BlurOverlayClass))
+
+typedef struct _BlurOverlay         BlurOverlay;
+typedef struct _BlurOverlayClass    BlurOverlayClass;
+
+struct _BlurOverlay
+{
+  GtkBin parent_instance;
+
+  GtkWidget *main_widget;
+};
+
+struct _BlurOverlayClass
+{
+  GtkBinClass parent_class;
+
+  gboolean (*get_child_position) (BlurOverlay   *overlay,
+                                  GtkWidget     *widget,
+                                  GtkAllocation *allocation);
+};
+
+GDK_AVAILABLE_IN_ALL
+GType      blur_overlay_get_type    (void) G_GNUC_CONST;
+GDK_AVAILABLE_IN_ALL
+GtkWidget *blur_overlay_new         (void);
+GDK_AVAILABLE_IN_ALL
+void       blur_overlay_add_overlay (BlurOverlay *overlay,
+                                     GtkWidget   *widget,
+                                     double       blur);
+
+G_END_DECLS
+
+#endif /* __BLUR_OVERLAY_H__ */

demos/gtk-demo/builder.c

@@ -61,8 +61,8 @@ do_builder (GtkWidget *do_widget)
 
       gtk_builder_connect_signals (builder, NULL);
       window = GTK_WIDGET (gtk_builder_get_object (builder, "window1"));
-      gtk_window_set_screen (GTK_WINDOW (window),
-                             gtk_widget_get_screen (do_widget));
+      gtk_window_set_display (GTK_WINDOW (window),
+                              gtk_widget_get_display (do_widget));
       g_signal_connect (window, "destroy",
                         G_CALLBACK (gtk_widget_destroyed), &window);
       toolbar = GTK_WIDGET (gtk_builder_get_object (builder, "toolbar1"));

demos/gtk-demo/button_box.c

@@ -1,127 +0,0 @@
-/* Button Boxes
- *
- * The Button Box widgets are used to arrange buttons with padding.
- */
-
-#include <glib/gi18n.h>
-#include <gtk/gtk.h>
-
-static GtkWidget *
-create_bbox (gint  horizontal,
-             char *title,
-             gint  spacing,
-             gint  layout)
-{
-  GtkWidget *frame;
-  GtkWidget *bbox;
-  GtkWidget *button;
-
-  frame = gtk_frame_new (title);
-
-  if (horizontal)
-    bbox = gtk_button_box_new (GTK_ORIENTATION_HORIZONTAL);
-  else
-    bbox = gtk_button_box_new (GTK_ORIENTATION_VERTICAL);
-
-  g_object_set (bbox, "margin", 5, NULL);
-
-  gtk_container_add (GTK_CONTAINER (frame), bbox);
-
-  gtk_button_box_set_layout (GTK_BUTTON_BOX (bbox), layout);
-  gtk_box_set_spacing (GTK_BOX (bbox), spacing);
-
-  button = gtk_button_new_with_label (_("OK"));
-  gtk_container_add (GTK_CONTAINER (bbox), button);
-
-  button = gtk_button_new_with_label (_("Cancel"));
-  gtk_container_add (GTK_CONTAINER (bbox), button);
-
-  button = gtk_button_new_with_label (_("Help"));
-  gtk_container_add (GTK_CONTAINER (bbox), button);
-
-  return frame;
-}
-
-GtkWidget *
-do_button_box (GtkWidget *do_widget)
-{
-  static GtkWidget *window = NULL;
-  GtkWidget *main_vbox;
-  GtkWidget *vbox;
-  GtkWidget *hbox;
-  GtkWidget *frame_horz;
-  GtkWidget *frame_vert;
-
-  if (!window)
-  {
-    window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
-    gtk_window_set_screen (GTK_WINDOW (window),
-                           gtk_widget_get_screen (do_widget));
-    gtk_window_set_title (GTK_WINDOW (window), "Button Boxes");
-
-    g_signal_connect (window, "destroy",
-                      G_CALLBACK (gtk_widget_destroyed),
-                      &window);
-
-    main_vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 0);
-    g_object_set (main_vbox, "margin", 10, NULL);
-    gtk_container_add (GTK_CONTAINER (window), main_vbox);
-
-    frame_horz = gtk_frame_new ("Horizontal Button Boxes");
-    gtk_widget_set_margin_top (frame_horz, 10);
-    gtk_widget_set_margin_bottom (frame_horz, 10);
-    gtk_box_pack_start (GTK_BOX (main_vbox), frame_horz);
-
-    vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 10);
-    g_object_set (vbox, "margin", 10, NULL);
-    gtk_container_add (GTK_CONTAINER (frame_horz), vbox);
-
-    gtk_box_pack_start (GTK_BOX (vbox),
-                        create_bbox (TRUE, "Spread", 40, GTK_BUTTONBOX_SPREAD));
-
-    gtk_box_pack_start (GTK_BOX (vbox),
-                        create_bbox (TRUE, "Edge", 40, GTK_BUTTONBOX_EDGE));
-
-    gtk_box_pack_start (GTK_BOX (vbox),
-                        create_bbox (TRUE, "Start", 40, GTK_BUTTONBOX_START));
-
-    gtk_box_pack_start (GTK_BOX (vbox),
-                        create_bbox (TRUE, "End", 40, GTK_BUTTONBOX_END));
-
-    gtk_box_pack_start (GTK_BOX (vbox),
-                        create_bbox (TRUE, "Center", 40, GTK_BUTTONBOX_CENTER));
-
-    gtk_box_pack_start (GTK_BOX (vbox),
-                        create_bbox (TRUE, "Expand", 0, GTK_BUTTONBOX_EXPAND));
-
-    frame_vert = gtk_frame_new ("Vertical Button Boxes");
-    gtk_box_pack_start (GTK_BOX (main_vbox), frame_vert);
-
-    hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 10);
-    g_object_set (hbox, "margin", 10, NULL);
-    gtk_container_add (GTK_CONTAINER (frame_vert), hbox);
-
-    gtk_box_pack_start (GTK_BOX (hbox),
-                        create_bbox (FALSE, "Spread", 10, GTK_BUTTONBOX_SPREAD));
-
-    gtk_box_pack_start (GTK_BOX (hbox),
-                        create_bbox (FALSE, "Edge", 10, GTK_BUTTONBOX_EDGE));
-
-    gtk_box_pack_start (GTK_BOX (hbox),
-                        create_bbox (FALSE, "Start", 10, GTK_BUTTONBOX_START));
-
-    gtk_box_pack_start (GTK_BOX (hbox),
-                        create_bbox (FALSE, "End", 10, GTK_BUTTONBOX_END));
-    gtk_box_pack_start (GTK_BOX (hbox),
-                        create_bbox (FALSE, "Center", 10, GTK_BUTTONBOX_CENTER));
-    gtk_box_pack_start (GTK_BOX (hbox),
-                        create_bbox (FALSE, "Expand", 0, GTK_BUTTONBOX_EXPAND));
-  }
-
-  if (!gtk_widget_get_visible (window))
-    gtk_widget_show (window);
-  else
-    gtk_widget_destroy (window);
-
-  return window;
-}

demos/gtk-demo/changedisplay.c

@@ -7,7 +7,7 @@
  * computers, as long as there is a network connection to the
  * computer where the application is running.
  *
- * Only some of the windowing systems where GTK+ runs have the
+ * Only some of the windowing systems where GTK runs have the
  * concept of multiple displays. (The X Window System is the
  * main example.) Other windowing systems can only handle one
  * keyboard and mouse, and combine all monitors into
@@ -68,32 +68,25 @@ enum
 static GtkWidget *
 find_toplevel_at_pointer (GdkDisplay *display)
 {
-  GdkWindow *pointer_window;
+  GdkSurface *pointer_window;
   GtkWidget *widget = NULL;
 
-  pointer_window = gdk_device_get_window_at_position (gtk_get_current_event_device (),
-                                                      NULL, NULL);
+  pointer_window = gdk_device_get_surface_at_position (gtk_get_current_event_device (), NULL, NULL);
 
-  /* The user data field of a GdkWindow is used to store a pointer
-   * to the widget that created it.
-   */
   if (pointer_window)
-    {
-      gpointer widget_ptr;
-      gdk_window_get_user_data (pointer_window, &widget_ptr);
-      widget = widget_ptr;
-    }
+    widget = GTK_WIDGET (gtk_root_get_for_surface (pointer_window));
 
-  return widget ? gtk_widget_get_toplevel (widget) : NULL;
+  return widget;
 }
 
-static gboolean
-button_release_event_cb (GtkWidget       *widget,
-                         GdkEventButton  *event,
-                         gboolean        *clicked)
+static void
+released_cb (GtkGestureMultiPress *gesture,
+             guint                 n_press,
+             gdouble               x,
+             gdouble               y,
+             gboolean             *clicked)
 {
   *clicked = TRUE;
-  return TRUE;
 }
 
 /* Asks the user to click on a window, then waits for them click
@@ -101,17 +94,16 @@ button_release_event_cb (GtkWidget       *widget,
  * window under the pointer, or NULL, if there is none.
  */
 static GtkWidget *
-query_for_toplevel (GdkScreen  *screen,
+query_for_toplevel (GdkDisplay *display,
                     const char *prompt)
 {
-  GdkDisplay *display = gdk_screen_get_display (screen);
   GtkWidget *popup, *label, *frame;
   GdkCursor *cursor;
   GtkWidget *toplevel = NULL;
   GdkDevice *device;
 
   popup = gtk_window_new (GTK_WINDOW_POPUP);
-  gtk_window_set_screen (GTK_WINDOW (popup), screen);
+  gtk_window_set_display (GTK_WINDOW (popup), display);
   gtk_window_set_modal (GTK_WINDOW (popup), TRUE);
   gtk_window_set_position (GTK_WINDOW (popup), GTK_WIN_POS_CENTER);
 
@@ -124,34 +116,37 @@ query_for_toplevel (GdkScreen  *screen,
   gtk_container_add (GTK_CONTAINER (frame), label);
 
   gtk_widget_show (popup);
-  cursor = gdk_cursor_new_from_name (display, "crosshair");
+  cursor = gdk_cursor_new_from_name ("crosshair", NULL);
   device = gtk_get_current_event_device ();
 
   if (gdk_seat_grab (gdk_device_get_seat (device),
-                     gtk_widget_get_window (popup),
+                     gtk_widget_get_surface (popup),
                      GDK_SEAT_CAPABILITY_ALL_POINTING,
                      FALSE, cursor, NULL, NULL, NULL) == GDK_GRAB_SUCCESS)
     {
+      GtkGesture *gesture = gtk_gesture_multi_press_new ();
       gboolean clicked = FALSE;
 
-      g_signal_connect (popup, "button-release-event",
-                        G_CALLBACK (button_release_event_cb), &clicked);
+      g_signal_connect (gesture, "released",
+                        G_CALLBACK (released_cb), &clicked);
+      gtk_widget_add_controller (popup, GTK_EVENT_CONTROLLER (gesture));
 
-      /* Process events until clicked is set by button_release_event_cb.
+      /* Process events until clicked is set by our button release event handler.
        * We pass in may_block=TRUE since we want to wait if there
        * are no events currently.
        */
       while (!clicked)
         g_main_context_iteration (NULL, TRUE);
 
-      toplevel = find_toplevel_at_pointer (gdk_screen_get_display (screen));
+      gdk_seat_ungrab (gdk_device_get_seat (device));
+
+      toplevel = find_toplevel_at_pointer (display);
       if (toplevel == popup)
         toplevel = NULL;
     }
 
   g_object_unref (cursor);
   gtk_widget_destroy (popup);
-  gdk_flush ();                 /* Really release the grab */
 
   return toplevel;
 }
@@ -162,17 +157,17 @@ query_for_toplevel (GdkScreen  *screen,
 static void
 query_change_display (ChangeDisplayInfo *info)
 {
-  GdkScreen *screen = gtk_widget_get_screen (info->window);
+  GdkDisplay *display = gtk_widget_get_display (info->window);
   GtkWidget *toplevel;
 
-  toplevel = query_for_toplevel (screen,
+  toplevel = query_for_toplevel (display,
                                  "Please select the toplevel\n"
-                                 "to move to the new screen");
+                                 "to move to the new display");
 
   if (toplevel)
-    gtk_window_set_screen (GTK_WINDOW (toplevel), gdk_display_get_default_screen (info->current_display));
+    gtk_window_set_display (GTK_WINDOW (toplevel), info->current_display);
   else
-    gdk_display_beep (gdk_screen_get_display (screen));
+    gdk_display_beep (display);
 }
 
 /* Called when the user clicks on a button in our dialog or
@@ -312,7 +307,7 @@ create_frame (ChangeDisplayInfo *info,
                                   GTK_POLICY_NEVER, GTK_POLICY_AUTOMATIC);
   gtk_scrolled_window_set_shadow_type (GTK_SCROLLED_WINDOW (scrollwin),
                                        GTK_SHADOW_IN);
-  gtk_box_pack_start (GTK_BOX (hbox), scrollwin);
+  gtk_container_add (GTK_CONTAINER (hbox), scrollwin);
 
   *tree_view = gtk_tree_view_new ();
   gtk_tree_view_set_headers_visible (GTK_TREE_VIEW (*tree_view), FALSE);
@@ -322,7 +317,7 @@ create_frame (ChangeDisplayInfo *info,
   gtk_tree_selection_set_mode (selection, GTK_SELECTION_BROWSE);
 
   *button_vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 5);
-  gtk_box_pack_start (GTK_BOX (hbox), *button_vbox);
+  gtk_container_add (GTK_CONTAINER (hbox), *button_vbox);
 
   if (!info->size_group)
     info->size_group = gtk_size_group_new (GTK_SIZE_GROUP_HORIZONTAL);
@@ -362,11 +357,11 @@ create_display_frame (ChangeDisplayInfo *info)
 
   button = left_align_button_new ("_Open...");
   g_signal_connect (button, "clicked",  G_CALLBACK (open_display_cb), info);
-  gtk_box_pack_start (GTK_BOX (button_vbox), button);
+  gtk_container_add (GTK_CONTAINER (button_vbox), button);
 
   button = left_align_button_new ("_Close");
   g_signal_connect (button, "clicked",  G_CALLBACK (close_display_cb), info);
-  gtk_box_pack_start (GTK_BOX (button_vbox), button);
+  gtk_container_add (GTK_CONTAINER (button_vbox), button);
 
   info->display_model = (GtkTreeModel *)gtk_list_store_new (DISPLAY_NUM_COLUMNS,
                                                             G_TYPE_STRING,
@@ -539,10 +534,10 @@ do_changedisplay (GtkWidget *do_widget)
 
       vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 5);
       g_object_set (vbox, "margin", 8, NULL);
-      gtk_box_pack_start (GTK_BOX (content_area), vbox);
+      gtk_container_add (GTK_CONTAINER (content_area), vbox);
 
       frame = create_display_frame (info);
-      gtk_box_pack_start (GTK_BOX (vbox), frame);
+      gtk_container_add (GTK_CONTAINER (vbox), frame);
 
       initialize_displays (info);
 

demos/gtk-demo/clipboard.c

@@ -1,6 +1,6 @@
 /* Clipboard
  *
- * GtkClipboard is used for clipboard handling. This demo shows how to
+ * GdkClipboard is used for clipboard handling. This demo shows how to
  * copy and paste text to and from the clipboard.
  *
  * It also shows how to transfer images via the clipboard or via
@@ -13,74 +13,104 @@
 #include <gtk/gtk.h>
 #include <string.h>
 
+static GtkWidget *window = NULL;
+
 void
 copy_button_clicked (GtkWidget *button,
                      gpointer   user_data)
 {
   GtkWidget *entry;
-  GtkClipboard *clipboard;
+  GdkClipboard *clipboard;
 
   entry = GTK_WIDGET (user_data);
 
   /* Get the clipboard object */
-  clipboard = gtk_widget_get_clipboard (entry,
-                                        GDK_SELECTION_CLIPBOARD);
+  clipboard = gtk_widget_get_clipboard (entry);
 
   /* Set clipboard text */
-  gtk_clipboard_set_text (clipboard, gtk_entry_get_text (GTK_ENTRY (entry)), -1);
+  gdk_clipboard_set_text (clipboard, gtk_editable_get_text (GTK_EDITABLE (entry)));
 }
 
 void
-paste_received (GtkClipboard *clipboard,
-                const gchar  *text,
+paste_received (GObject      *source_object,
+                GAsyncResult *result,
                 gpointer      user_data)
 {
+  GdkClipboard *clipboard;
   GtkWidget *entry;
+  char *text;
+  GError *error = NULL;
 
+  clipboard = GDK_CLIPBOARD (source_object);
   entry = GTK_WIDGET (user_data);
 
-  /* Set the entry text */
-  if(text)
-    gtk_entry_set_text (GTK_ENTRY (entry), text);
+  /* Get the resulting text of the read operation */
+  text = gdk_clipboard_read_text_finish (clipboard, result, &error);
+
+  if (text)
+    {
+      /* Set the entry text */
+      gtk_editable_set_text (GTK_EDITABLE (entry), text);
+      g_free (text);
+    }
+  else
+    {
+      GtkWidget *dialog;
+
+      /* Show an error about why pasting failed.
+       * Usually you probably want to ignore such failures,
+       * but for demonstration purposes, we show the error.
+       */
+      dialog = gtk_message_dialog_new (GTK_WINDOW (window),
+                                       GTK_DIALOG_DESTROY_WITH_PARENT | GTK_DIALOG_MODAL,
+                                       GTK_MESSAGE_ERROR,
+                                       GTK_BUTTONS_CLOSE,
+                                       "Could not paste text: %s",
+                                       error->message);
+      g_signal_connect (dialog, "response",
+                        G_CALLBACK (gtk_widget_destroy), NULL);
+      gtk_widget_show (dialog);
+
+      g_error_free (error);
+    }
 }
 
 void
 paste_button_clicked (GtkWidget *button,
-                     gpointer   user_data)
+                      gpointer   user_data)
 {
   GtkWidget *entry;
-  GtkClipboard *clipboard;
+  GdkClipboard *clipboard;
 
   entry = GTK_WIDGET (user_data);
 
   /* Get the clipboard object */
-  clipboard = gtk_widget_get_clipboard (entry,
-                                        GDK_SELECTION_CLIPBOARD);
+  clipboard = gtk_widget_get_clipboard (entry);
 
   /* Request the contents of the clipboard, contents_received will be
      called when we do get the contents.
    */
-  gtk_clipboard_request_text (clipboard,
-                              paste_received, entry);
+  gdk_clipboard_read_text_async (clipboard, NULL, paste_received, entry);
 }
 
-static cairo_surface_t *
-get_image_surface (GtkImage *image)
+static GdkPaintable *
+get_image_paintable (GtkImage *image)
 {
   const gchar *icon_name;
-  GtkIconSize size;
   GtkIconTheme *icon_theme;
-  int width;
+  GtkIconInfo *icon_info;
 
   switch (gtk_image_get_storage_type (image))
     {
-    case GTK_IMAGE_SURFACE:
-      return cairo_surface_reference (gtk_image_get_surface (image));
+    case GTK_IMAGE_PAINTABLE:
+      return g_object_ref (gtk_image_get_paintable (image));
     case GTK_IMAGE_ICON_NAME:
-      gtk_image_get_icon_name (image, &icon_name, &size);
-      icon_theme = gtk_icon_theme_get_for_screen (gtk_widget_get_screen (GTK_WIDGET (image)));
-      gtk_icon_size_lookup (size, &width, NULL);
-      return gtk_icon_theme_load_surface (icon_theme, icon_name, width, 1, NULL, GTK_ICON_LOOKUP_GENERIC_FALLBACK, NULL);
+      icon_name = gtk_image_get_icon_name (image);
+      icon_theme = gtk_icon_theme_get_for_display (gtk_widget_get_display (GTK_WIDGET (image)));
+      icon_info = gtk_icon_theme_lookup_icon (icon_theme, icon_name, 48, GTK_ICON_LOOKUP_GENERIC_FALLBACK);
+      if (icon_info == NULL)
+        return NULL;
+      return GDK_PAINTABLE (gtk_icon_info_load_texture (icon_info));
     default:
       g_warning ("Image storage type %d not handled",
                  gtk_image_get_storage_type (image));
@@ -90,51 +120,46 @@ get_image_surface (GtkImage *image)
 
 static void
 drag_begin (GtkWidget      *widget,
-            GdkDragContext *context,
+            GdkDrag        *drag,
             gpointer        data)
 {
-  cairo_surface_t *surface;
+  GdkPaintable *paintable;
 
-  surface = get_image_surface (GTK_IMAGE (widget));
-  if (surface)
+  paintable = get_image_paintable (GTK_IMAGE (widget));
+  if (paintable)
     {
-      cairo_surface_set_device_offset (surface, -2, -2);
-      gtk_drag_set_icon_surface (context, surface);
+      gtk_drag_set_icon_paintable (drag, paintable, -2, -2);
+      g_object_unref (paintable);
     }
 }
 
 void
 drag_data_get (GtkWidget        *widget,
-               GdkDragContext   *context,
+               GdkDrag          *drag,
                GtkSelectionData *selection_data,
                guint             info,
-               guint             time,
                gpointer          data)
 {
-  cairo_surface_t *surface;
+  GdkPaintable *paintable;
 
-  surface = get_image_surface (GTK_IMAGE (data));
-  if (surface)
-    gtk_selection_data_set_surface (selection_data, surface);
+  paintable = get_image_paintable (GTK_IMAGE (widget));
+  if (GDK_IS_TEXTURE (paintable))
+    gtk_selection_data_set_texture (selection_data, GDK_TEXTURE (paintable));
 }
 
 static void
 drag_data_received (GtkWidget        *widget,
-                    GdkDragContext   *context,
-                    gint              x,
-                    gint              y,
+                    GdkDrop          *drop,
                     GtkSelectionData *selection_data,
-                    guint             info,
-                    guint32           time,
                     gpointer          data)
 {
   if (gtk_selection_data_get_length (selection_data) > 0)
     {
-      cairo_surface_t *surface;
+      GdkTexture *texture;
 
-      surface = gtk_selection_data_get_surface (selection_data);
-      gtk_image_set_from_surface (GTK_IMAGE (data), surface);
-      cairo_surface_destroy (surface);
+      texture = gtk_selection_data_get_texture (selection_data);
+      gtk_image_set_from_paintable (GTK_IMAGE (data), GDK_PAINTABLE (texture));
+      g_object_unref (texture);
     }
 }
 
@@ -142,82 +167,86 @@ static void
 copy_image (GtkMenuItem *item,
             gpointer     data)
 {
-  GtkClipboard *clipboard;
-  cairo_surface_t *surface;
+  GdkClipboard *clipboard;
+  GdkPaintable *paintable;
 
-  clipboard = gtk_clipboard_get (GDK_SELECTION_CLIPBOARD);
-  surface = get_image_surface (GTK_IMAGE (data));
+  clipboard = gtk_widget_get_clipboard (GTK_WIDGET (data));
+  paintable = get_image_paintable (GTK_IMAGE (data));
 
-  if (surface)
-    {
-      gtk_clipboard_set_surface (clipboard, surface);
-      cairo_surface_destroy (surface);
-    }
+  if (GDK_IS_TEXTURE (paintable))
+    gdk_clipboard_set_texture (clipboard, GDK_TEXTURE (paintable));
+
+  if (paintable)
+    g_object_unref (paintable);
+}
+
+static void
+paste_image_received (GObject      *source,
+                      GAsyncResult *result,
+                      gpointer      data)
+{
+  GdkTexture *texture;
+
+  texture = gdk_clipboard_read_texture_finish (GDK_CLIPBOARD (source), result, NULL);
+  if (texture == NULL)
+    return;
+    
+  gtk_image_set_from_paintable (GTK_IMAGE (data), GDK_PAINTABLE (texture));
+  g_object_unref (texture);
 }
 
 static void
 paste_image (GtkMenuItem *item,
              gpointer     data)
 {
-  GtkClipboard *clipboard;
-  cairo_surface_t *surface;
+  GdkClipboard *clipboard;
 
-  clipboard = gtk_clipboard_get (GDK_SELECTION_CLIPBOARD);
-  surface = gtk_clipboard_wait_for_surface (clipboard);
-
-  if (surface)
-    {
-      gtk_image_set_from_surface (GTK_IMAGE (data), surface);
-      cairo_surface_destroy (surface);
-    }
+  clipboard = gtk_widget_get_clipboard (GTK_WIDGET (data));
+  gdk_clipboard_read_texture_async (clipboard,
+                                    NULL,
+                                    paste_image_received,
+                                    data);
 }
 
-static gboolean
-button_press (GtkWidget      *widget,
-              GdkEventButton *event,
-              gpointer        data)
+static void
+pressed_cb (GtkGesture *gesture,
+            int         n_press,
+            double      x,
+            double      y,
+            GtkWidget  *image)
 {
   GtkWidget *menu;
   GtkWidget *item;
-  guint button;
-
-  gdk_event_get_button ((GdkEvent *)event, &button);
-
-  if (button != GDK_BUTTON_SECONDARY)
-    return FALSE;
 
   menu = gtk_menu_new ();
 
   item = gtk_menu_item_new_with_mnemonic (_("_Copy"));
-  g_signal_connect (item, "activate", G_CALLBACK (copy_image), data);
+  g_signal_connect (item, "activate", G_CALLBACK (copy_image), image);
   gtk_widget_show (item);
   gtk_menu_shell_append (GTK_MENU_SHELL (menu), item);
 
   item = gtk_menu_item_new_with_mnemonic (_("_Paste"));
-  g_signal_connect (item, "activate", G_CALLBACK (paste_image), data);
+  g_signal_connect (item, "activate", G_CALLBACK (paste_image), image);
   gtk_widget_show (item);
   gtk_menu_shell_append (GTK_MENU_SHELL (menu), item);
 
-  gtk_menu_popup_at_pointer (GTK_MENU (menu), (GdkEvent *) event);
-  return TRUE;
+  gtk_menu_popup_at_pointer (GTK_MENU (menu), NULL);
 }
 
 GtkWidget *
 do_clipboard (GtkWidget *do_widget)
 {
-  static GtkWidget *window = NULL;
-
   if (!window)
     {
       GtkWidget *vbox, *hbox;
       GtkWidget *label;
       GtkWidget *entry, *button;
       GtkWidget *image;
-      GtkClipboard *clipboard;
+      GtkGesture *gesture;
 
       window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
-      gtk_window_set_screen (GTK_WINDOW (window),
-                             gtk_widget_get_screen (do_widget));
+      gtk_window_set_display (GTK_WINDOW (window),
+                              gtk_widget_get_display (do_widget));
       gtk_window_set_title (GTK_WINDOW (window), "Clipboard");
 
       g_signal_connect (window, "destroy",
@@ -230,53 +259,52 @@ do_clipboard (GtkWidget *do_widget)
 
       label = gtk_label_new ("\"Copy\" will copy the text\nin the entry to the clipboard");
 
-      gtk_box_pack_start (GTK_BOX (vbox), label);
+      gtk_container_add (GTK_CONTAINER (vbox), label);
 
       hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 4);
       g_object_set (hbox, "margin", 8, NULL);
-      gtk_box_pack_start (GTK_BOX (vbox), hbox);
+      gtk_container_add (GTK_CONTAINER (vbox), hbox);
 
       /* Create the first entry */
       entry = gtk_entry_new ();
-      gtk_box_pack_start (GTK_BOX (hbox), entry);
+      gtk_container_add (GTK_CONTAINER (hbox), entry);
 
       /* Create the button */
       button = gtk_button_new_with_mnemonic (_("_Copy"));
-      gtk_box_pack_start (GTK_BOX (hbox), button);
+      gtk_container_add (GTK_CONTAINER (hbox), button);
       g_signal_connect (button, "clicked",
                         G_CALLBACK (copy_button_clicked), entry);
 
       label = gtk_label_new ("\"Paste\" will paste the text from the clipboard to the entry");
-      gtk_box_pack_start (GTK_BOX (vbox), label);
+      gtk_container_add (GTK_CONTAINER (vbox), label);
 
       hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 4);
       g_object_set (hbox, "margin", 8, NULL);
-      gtk_box_pack_start (GTK_BOX (vbox), hbox);
+      gtk_container_add (GTK_CONTAINER (vbox), hbox);
 
       /* Create the second entry */
       entry = gtk_entry_new ();
-      gtk_box_pack_start (GTK_BOX (hbox), entry);
+      gtk_container_add (GTK_CONTAINER (hbox), entry);
 
       /* Create the button */
       button = gtk_button_new_with_mnemonic (_("_Paste"));
-      gtk_box_pack_start (GTK_BOX (hbox), button);
+      gtk_container_add (GTK_CONTAINER (hbox), button);
       g_signal_connect (button, "clicked",
                         G_CALLBACK (paste_button_clicked), entry);
 
       label = gtk_label_new ("Images can be transferred via the clipboard, too");
-      gtk_box_pack_start (GTK_BOX (vbox), label);
+      gtk_container_add (GTK_CONTAINER (vbox), label);
 
       hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 4);
       g_object_set (hbox, "margin", 8, NULL);
-      gtk_box_pack_start (GTK_BOX (vbox), hbox);
+      gtk_container_add (GTK_CONTAINER (vbox), hbox);
 
       /* Create the first image */
-      image = gtk_image_new_from_icon_name ("dialog-warning",
-                                            GTK_ICON_SIZE_BUTTON);
+      image = gtk_image_new_from_icon_name ("dialog-warning");
       gtk_container_add (GTK_CONTAINER (hbox), image);
 
       /* make image a drag source */
-      gtk_drag_source_set (image, GDK_BUTTON1_MASK, NULL, 0, GDK_ACTION_COPY);
+      gtk_drag_source_set (image, GDK_BUTTON1_MASK, NULL, GDK_ACTION_COPY);
       gtk_drag_source_add_image_targets (image);
       g_signal_connect (image, "drag-begin",
                         G_CALLBACK (drag_begin), image);
@@ -285,22 +313,23 @@ do_clipboard (GtkWidget *do_widget)
 
       /* accept drops on image */
       gtk_drag_dest_set (image, GTK_DEST_DEFAULT_ALL,
-                         NULL, 0, GDK_ACTION_COPY);
+                         NULL, GDK_ACTION_COPY);
       gtk_drag_dest_add_image_targets (image);
       g_signal_connect (image, "drag-data-received",
                         G_CALLBACK (drag_data_received), image);
 
       /* context menu on image */
-      g_signal_connect (image, "button-press-event",
-                        G_CALLBACK (button_press), image);
+      gesture = gtk_gesture_multi_press_new ();
+      gtk_gesture_single_set_button (GTK_GESTURE_SINGLE (gesture), GDK_BUTTON_SECONDARY);
+      g_signal_connect (gesture, "pressed", G_CALLBACK (pressed_cb), image);
+      gtk_widget_add_controller (image, GTK_EVENT_CONTROLLER (gesture));
 
       /* Create the second image */
-      image = gtk_image_new_from_icon_name ("process-stop",
-                                            GTK_ICON_SIZE_BUTTON);
+      image = gtk_image_new_from_icon_name ("process-stop");
       gtk_container_add (GTK_CONTAINER (hbox), image);
 
       /* make image a drag source */
-      gtk_drag_source_set (image, GDK_BUTTON1_MASK, NULL, 0, GDK_ACTION_COPY);
+      gtk_drag_source_set (image, GDK_BUTTON1_MASK, NULL, GDK_ACTION_COPY);
       gtk_drag_source_add_image_targets (image);
       g_signal_connect (image, "drag-begin",
                         G_CALLBACK (drag_begin), image);
@@ -309,18 +338,16 @@ do_clipboard (GtkWidget *do_widget)
 
       /* accept drops on image */
       gtk_drag_dest_set (image, GTK_DEST_DEFAULT_ALL,
-                         NULL, 0, GDK_ACTION_COPY);
+                         NULL, GDK_ACTION_COPY);
       gtk_drag_dest_add_image_targets (image);
       g_signal_connect (image, "drag-data-received",
                         G_CALLBACK (drag_data_received), image);
 
       /* context menu on image */
-      g_signal_connect (image, "button-press-event",
-                        G_CALLBACK (button_press), image);
-
-      /* tell the clipboard manager to make the data persistent */
-      clipboard = gtk_clipboard_get (GDK_SELECTION_CLIPBOARD);
-      gtk_clipboard_set_can_store (clipboard, NULL, 0);
+      gesture = gtk_gesture_multi_press_new ();
+      gtk_gesture_single_set_button (GTK_GESTURE_SINGLE (gesture), GDK_BUTTON_SECONDARY);
+      g_signal_connect (gesture, "pressed", G_CALLBACK (pressed_cb), image);
+      gtk_widget_add_controller (image, GTK_EVENT_CONTROLLER (gesture));
     }
 
   if (!gtk_widget_get_visible (window))

demos/gtk-demo/colorsel.c

@@ -1,7 +1,7 @@
 /* Color Chooser
  *
  * A GtkColorChooser lets the user choose a color. There are several
- * implementations of the GtkColorChooser interface in GTK+. The
+ * implementations of the GtkColorChooser interface in GTK. The
  * GtkColorChooserDialog is a prebuilt dialog containing a
  * GtkColorChooserWidget.
  */
@@ -70,8 +70,8 @@ do_colorsel (GtkWidget *do_widget)
       color.alpha = 1;
 
       window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
-      gtk_window_set_screen (GTK_WINDOW (window),
-                             gtk_widget_get_screen (do_widget));
+      gtk_window_set_display (GTK_WINDOW (window),
+                              gtk_widget_get_display (do_widget));
       gtk_window_set_title (GTK_WINDOW (window), "Color Chooser");
       gtk_window_set_resizable (GTK_WINDOW (window), FALSE);
 
@@ -88,7 +88,7 @@ do_colorsel (GtkWidget *do_widget)
 
       frame = gtk_frame_new (NULL);
       gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_IN);
-      gtk_box_pack_start (GTK_BOX (vbox), frame);
+      gtk_container_add (GTK_CONTAINER (vbox), frame);
 
       da = gtk_drawing_area_new ();
       gtk_drawing_area_set_content_width (GTK_DRAWING_AREA (da), 200);
@@ -101,7 +101,7 @@ do_colorsel (GtkWidget *do_widget)
       gtk_widget_set_halign (button, GTK_ALIGN_END);
       gtk_widget_set_valign (button, GTK_ALIGN_CENTER);
 
-      gtk_box_pack_start (GTK_BOX (vbox), button);
+      gtk_container_add (GTK_CONTAINER (vbox), button);
 
       g_signal_connect (button, "clicked",
                         G_CALLBACK (change_color_callback), NULL);

demos/gtk-demo/combobox.c

@@ -144,7 +144,7 @@ create_capital_store (void)
     { NULL, "Jackson" },
     { NULL, "Jefferson City" },
     { NULL, "Juneau" },
-    { "K - O" },
+    { "K - O", NULL },
     { NULL, "Lansing" },
     { NULL, "Lincoln" },
     { NULL, "Little Rock" },
@@ -154,7 +154,7 @@ create_capital_store (void)
     { NULL, "Nashville" },
     { NULL, "Oklahoma City" },
     { NULL, "Olympia" },
-    { NULL, "P - S" },
+    { "P - S", NULL },
     { NULL, "Phoenix" },
     { NULL, "Pierre" },
     { NULL, "Providence" },
@@ -256,7 +256,7 @@ mask_entry_set_background (MaskEntry *entry)
 {
   if (entry->mask)
     {
-      if (!g_regex_match_simple (entry->mask, gtk_entry_get_text (GTK_ENTRY (entry)), 0, 0))
+      if (!g_regex_match_simple (entry->mask, gtk_editable_get_text (GTK_EDITABLE (entry)), 0, 0))
         {
           PangoAttrList *attrs;
 
@@ -311,8 +311,8 @@ do_combobox (GtkWidget *do_widget)
   if (!window)
   {
     window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
-    gtk_window_set_screen (GTK_WINDOW (window),
-                           gtk_widget_get_screen (do_widget));
+    gtk_window_set_display (GTK_WINDOW (window),
+                            gtk_widget_get_display (do_widget));
     gtk_window_set_title (GTK_WINDOW (window), "Combo Boxes");
 
     g_signal_connect (window, "destroy",
@@ -326,7 +326,7 @@ do_combobox (GtkWidget *do_widget)
      *  insensitive rows
      */
     frame = gtk_frame_new ("Items with icons");
-    gtk_box_pack_start (GTK_BOX (vbox), frame);
+    gtk_container_add (GTK_CONTAINER (vbox), frame);
 
     box = gtk_box_new (GTK_ORIENTATION_VERTICAL, 0);
     g_object_set (box, "margin", 5, NULL);
@@ -367,7 +367,7 @@ do_combobox (GtkWidget *do_widget)
     /* A combobox demonstrating trees.
      */
     frame = gtk_frame_new ("Where are we ?");
-    gtk_box_pack_start (GTK_BOX (vbox), frame);
+    gtk_container_add (GTK_CONTAINER (vbox), frame);
 
     box = gtk_box_new (GTK_ORIENTATION_VERTICAL, 0);
     g_object_set (box, "margin", 5, NULL);
@@ -395,7 +395,7 @@ do_combobox (GtkWidget *do_widget)
 
     /* A GtkComboBoxEntry with validation */
     frame = gtk_frame_new ("Editable");
-    gtk_box_pack_start (GTK_BOX (vbox), frame);
+    gtk_container_add (GTK_CONTAINER (vbox), frame);
 
     box = gtk_box_new (GTK_ORIENTATION_VERTICAL, 0);
     g_object_set (box, "margin", 5, NULL);
@@ -413,7 +413,7 @@ do_combobox (GtkWidget *do_widget)
 
     /* A combobox with string IDs */
     frame = gtk_frame_new ("String IDs");
-    gtk_box_pack_start (GTK_BOX (vbox), frame);
+    gtk_container_add (GTK_CONTAINER (vbox), frame);
 
     box = gtk_box_new (GTK_ORIENTATION_VERTICAL, 0);
     g_object_set (box, "margin", 5, NULL);

demos/gtk-demo/css_basics.c

@@ -13,19 +13,22 @@ show_parsing_error (GtkCssProvider *provider,
                     const GError   *error,
                     GtkTextBuffer  *buffer)
 {
+  const GtkCssLocation *start_location, *end_location;
   GtkTextIter start, end;
   const char *tag_name;
 
+  start_location = gtk_css_section_get_start_location (section);
   gtk_text_buffer_get_iter_at_line_index (buffer,
                                           &start,
-                                          gtk_css_section_get_start_line (section),
-                                          gtk_css_section_get_start_position (section));
+                                          start_location->lines,
+                                          start_location->line_bytes);
+  end_location = gtk_css_section_get_end_location (section);
   gtk_text_buffer_get_iter_at_line_index (buffer,
                                           &end,
-                                          gtk_css_section_get_end_line (section),
-                                          gtk_css_section_get_end_position (section));
+                                          end_location->lines,
+                                          end_location->line_bytes);
 
-  if (g_error_matches (error, GTK_CSS_PROVIDER_ERROR, GTK_CSS_PROVIDER_ERROR_DEPRECATED))
+  if (error->domain == GTK_CSS_PARSER_WARNING)
     tag_name = "warning";
   else
     tag_name = "error";
@@ -47,8 +50,6 @@ css_text_changed (GtkTextBuffer  *buffer,
   text = gtk_text_buffer_get_text (buffer, &start, &end, FALSE);
   gtk_css_provider_load_from_data (provider, text, -1);
   g_free (text);
-
-  gtk_style_context_reset_widgets (gdk_screen_get_default ());
 }
 
 static void

demos/gtk-demo/css_blendmodes.c

@@ -130,9 +130,9 @@ do_css_blendmodes (GtkWidget *do_widget)
       /* Setup the CSS provider for window */
       provider = GTK_STYLE_PROVIDER (gtk_css_provider_new ());
 
-      gtk_style_context_add_provider_for_screen (gdk_screen_get_default (),
-                                                 provider,
-                                                 GTK_STYLE_PROVIDER_PRIORITY_APPLICATION);
+      gtk_style_context_add_provider_for_display (gdk_display_get_default (),
+                                                  provider,
+                                                  GTK_STYLE_PROVIDER_PRIORITY_APPLICATION);
 
       setup_listbox (builder, provider);
     }

demos/gtk-demo/css_multiplebgs.c

@@ -13,19 +13,23 @@ show_parsing_error (GtkCssProvider *provider,
                     const GError   *error,
                     GtkTextBuffer  *buffer)
 {
+  const GtkCssLocation *start_location, *end_location;
   GtkTextIter start, end;
   const char *tag_name;
 
+  start_location = gtk_css_section_get_start_location (section);
   gtk_text_buffer_get_iter_at_line_index (buffer,
                                           &start,
-                                          gtk_css_section_get_start_line (section),
-                                          gtk_css_section_get_start_position (section));
+                                          start_location->lines,
+                                          start_location->line_bytes);
+  end_location = gtk_css_section_get_end_location (section);
   gtk_text_buffer_get_iter_at_line_index (buffer,
                                           &end,
-                                          gtk_css_section_get_end_line (section),
-                                          gtk_css_section_get_end_position (section));
+                                          end_location->lines,
+                                          end_location->line_bytes);
 
-  if (g_error_matches (error, GTK_CSS_PROVIDER_ERROR, GTK_CSS_PROVIDER_ERROR_DEPRECATED))
+
+  if (error->domain == GTK_CSS_PARSER_WARNING)
     tag_name = "warning";
   else
     tag_name = "error";
@@ -47,8 +51,6 @@ css_text_changed (GtkTextBuffer  *buffer,
   text = gtk_text_buffer_get_text (buffer, &start, &end, FALSE);
   gtk_css_provider_load_from_data (provider, text, -1);
   g_free (text);
-
-  gtk_style_context_reset_widgets (gdk_screen_get_default ());
 }
 
 static void

demos/gtk-demo/css_pixbufs.c

@@ -12,19 +12,23 @@ show_parsing_error (GtkCssProvider *provider,
                     const GError   *error,
                     GtkTextBuffer  *buffer)
 {
+  const GtkCssLocation *start_location, *end_location;
   GtkTextIter start, end;
   const char *tag_name;
 
+  start_location = gtk_css_section_get_start_location (section);
   gtk_text_buffer_get_iter_at_line_index (buffer,
                                           &start,
-                                          gtk_css_section_get_start_line (section),
-                                          gtk_css_section_get_start_position (section));
+                                          start_location->lines,
+                                          start_location->line_bytes);
+  end_location = gtk_css_section_get_end_location (section);
   gtk_text_buffer_get_iter_at_line_index (buffer,
                                           &end,
-                                          gtk_css_section_get_end_line (section),
-                                          gtk_css_section_get_end_position (section));
+                                          end_location->lines,
+                                          end_location->line_bytes);
 
-  if (g_error_matches (error, GTK_CSS_PROVIDER_ERROR, GTK_CSS_PROVIDER_ERROR_DEPRECATED))
+
+  if (error->domain == GTK_CSS_PARSER_WARNING)
     tag_name = "warning";
   else
     tag_name = "error";
@@ -46,8 +50,6 @@ css_text_changed (GtkTextBuffer  *buffer,
   text = gtk_text_buffer_get_text (buffer, &start, &end, FALSE);
   gtk_css_provider_load_from_data (provider, text, -1);
   g_free (text);
-
-  gtk_style_context_reset_widgets (gdk_screen_get_default ());
 }
 
 static void

demos/gtk-demo/css_shadows.c

@@ -11,19 +11,22 @@ show_parsing_error (GtkCssProvider *provider,
                     const GError   *error,
                     GtkTextBuffer  *buffer)
 {
+  const GtkCssLocation *start_location, *end_location;
   GtkTextIter start, end;
   const char *tag_name;
 
+  start_location = gtk_css_section_get_start_location (section);
   gtk_text_buffer_get_iter_at_line_index (buffer,
                                           &start,
-                                          gtk_css_section_get_start_line (section),
-                                          gtk_css_section_get_start_position (section));
+                                          start_location->lines,
+                                          start_location->line_bytes);
+  end_location = gtk_css_section_get_end_location (section);
   gtk_text_buffer_get_iter_at_line_index (buffer,
                                           &end,
-                                          gtk_css_section_get_end_line (section),
-                                          gtk_css_section_get_end_position (section));
+                                          end_location->lines,
+                                          end_location->line_bytes);
 
-  if (g_error_matches (error, GTK_CSS_PROVIDER_ERROR, GTK_CSS_PROVIDER_ERROR_DEPRECATED))
+  if (error->domain == GTK_CSS_PARSER_WARNING)
     tag_name = "warning";
   else
     tag_name = "error";
@@ -45,8 +48,6 @@ css_text_changed (GtkTextBuffer  *buffer,
   text = gtk_text_buffer_get_text (buffer, &start, &end, FALSE);
   gtk_css_provider_load_from_data (provider, text, -1);
   g_free (text);
-
-  gtk_style_context_reset_widgets (gdk_screen_get_default ());
 }
 
 static void

demos/gtk-demo/cursors.c

@@ -1,161 +1,44 @@
 /* Cursors
  *
- * Demonstrates a useful set of available cursors.
+ * Demonstrates a useful set of available cursors. The cursors shown here are the ones
+ * defined by CSS, which we assume to be available.
+ *
+ * The example shows creating cursors by name or from an image, with or without a fallback.
  */
+
 #include <gtk/gtk.h>
 
-static void
-set_cursor (GtkWidget *button, gpointer data)
-{
-  GtkWidget *toplevel;
-  GdkCursor *cursor = data;
-  GdkWindow *window;
-
-  toplevel = gtk_widget_get_toplevel (button);
-  window = gtk_widget_get_window (toplevel);
-  gdk_window_set_cursor (window, cursor);
-}
-
-static GtkWidget *
-add_section (GtkWidget   *box,
-             const gchar *heading)
-{
-  GtkWidget *label;
-  GtkWidget *section;
-
-  label = gtk_label_new (heading);
-  gtk_label_set_xalign (GTK_LABEL (label), 0.0);
-  gtk_widget_set_margin_top (label, 10);
-  gtk_widget_set_margin_bottom (label, 10);
-  gtk_box_pack_start (GTK_BOX (box), label);
-  section = gtk_flow_box_new ();
-  gtk_widget_set_halign (section, GTK_ALIGN_START);
-  gtk_flow_box_set_selection_mode (GTK_FLOW_BOX (section), GTK_SELECTION_NONE);
-  gtk_flow_box_set_min_children_per_line (GTK_FLOW_BOX (section), 2);
-  gtk_flow_box_set_max_children_per_line (GTK_FLOW_BOX (section), 20);
-  gtk_box_pack_start (GTK_BOX (box), section);
-
-  return section;
-}
+static GtkWidget *window = NULL;
 
 static void
-add_button (GtkWidget   *section,
-            const gchar *css_name)
+on_destroy (gpointer data)
 {
-  GtkWidget *image, *button;
-  GdkDisplay *display;
-  GdkCursor *cursor;
-
-  display = gtk_widget_get_display (section);
-  cursor = gdk_cursor_new_from_name (display, css_name);
-  if (cursor == NULL)
-    image = gtk_image_new_from_icon_name ("image-missing", GTK_ICON_SIZE_MENU);
-  else
-    {
-      gchar *path;
-
-      path = g_strdup_printf ("/cursors/%s_cursor.png", css_name);
-      g_strdelimit (path, "-", '_');
-      image = gtk_image_new_from_resource (path);
-      g_free (path);
-    }
-  gtk_widget_set_size_request (image, 32, 32);
-  button = gtk_button_new ();
-  gtk_container_add (GTK_CONTAINER (button), image);
-  gtk_style_context_add_class (gtk_widget_get_style_context (button), "image-button");
-  g_signal_connect (button, "clicked", G_CALLBACK (set_cursor), cursor);
-
-  gtk_widget_set_tooltip_text (button, css_name);
-  gtk_container_add (GTK_CONTAINER (section), button);
+  window = NULL;
 }
 
 GtkWidget *
 do_cursors (GtkWidget *do_widget)
 {
-  static GtkWidget *window = NULL;
-
   if (!window)
     {
-      GtkWidget *sw;
-      GtkWidget *box;
-      GtkWidget *section;
-
-      window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
-      gtk_window_set_screen (GTK_WINDOW (window),
-                             gtk_widget_get_screen (do_widget));
-      gtk_window_set_title (GTK_WINDOW (window), "Cursors");
-      gtk_window_set_default_size (GTK_WINDOW (window), 500, 500);
+      GtkBuilder *builder;
 
+      builder = gtk_builder_new_from_resource ("/cursors/cursors.ui");
+      gtk_builder_connect_signals (builder, NULL);
+      window = GTK_WIDGET (gtk_builder_get_object (builder, "window"));
+      gtk_window_set_display (GTK_WINDOW (window),
+                              gtk_widget_get_display (do_widget));
       g_signal_connect (window, "destroy",
-                        G_CALLBACK (gtk_widget_destroyed),
-                        &window);
-
-      sw = gtk_scrolled_window_new (NULL, NULL);
-      gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (sw),
-                                      GTK_POLICY_NEVER,
-                                      GTK_POLICY_AUTOMATIC);
-      gtk_container_add (GTK_CONTAINER (window), sw);
-      box = gtk_box_new (GTK_ORIENTATION_VERTICAL, 0);
-      g_object_set (box,
-                    "margin-start", 20,
-                    "margin-end", 20,
-                    "margin-bottom", 10,
-                    NULL);
-      gtk_container_add (GTK_CONTAINER (sw), box);
-
-      section = add_section (box, "General");
-      add_button (section, "default");
-      add_button (section, "none");
-
-      section = add_section (box, "Link & Status");
-      add_button (section, "context-menu");
-      add_button (section, "help");
-      add_button (section, "pointer");
-      add_button (section, "progress");
-      add_button (section, "wait");
-
-      section = add_section (box, "Selection");
-      add_button (section, "cell");
-      add_button (section, "crosshair");
-      add_button (section, "text");
-      add_button (section, "vertical-text");
-
-      section = add_section (box, "Drag & Drop");
-      add_button (section, "alias");
-      add_button (section, "copy");
-      add_button (section, "move");
-      add_button (section, "no-drop");
-      add_button (section, "not-allowed");
-      add_button (section, "grab");
-      add_button (section, "grabbing");
-
-      section = add_section (box, "Resize & Scrolling");
-      add_button (section, "all-scroll");
-      add_button (section, "col-resize");
-      add_button (section, "row-resize");
-      add_button (section, "n-resize");
-      add_button (section, "e-resize");
-      add_button (section, "s-resize");
-      add_button (section, "w-resize");
-      add_button (section, "ne-resize");
-      add_button (section, "nw-resize");
-      add_button (section, "se-resize");
-      add_button (section, "sw-resize");
-      add_button (section, "ew-resize");
-      add_button (section, "ns-resize");
-      add_button (section, "nesw-resize");
-      add_button (section, "nwse-resize");
-
-      section = add_section (box, "Zoom");
-      add_button (section, "zoom-in");
-      add_button (section, "zoom-out");
+                        G_CALLBACK (on_destroy), NULL);
+      g_object_set_data_full (G_OBJECT (window), "builder", builder, g_object_unref);
     }
 
   if (!gtk_widget_get_visible (window))
     gtk_widget_show (window);
   else
-    gtk_widget_destroy (window);
-
+    {
+      gtk_widget_destroy (window);
+    }
 
   return window;
 }

demos/gtk-demo/data/scalable/apps/org.gtk.Demo4.svg

@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" width="128" height="128" version="1.0"><defs><linearGradient id="f"><stop offset="0" stop-color="#ff7800"/><stop offset="1" stop-color="#ed333b"/></linearGradient><linearGradient id="e"><stop offset="0" stop-color="#f5c211"/><stop offset="1" stop-color="#33d17a" stop-opacity=".899"/></linearGradient><linearGradient id="d"><stop offset="0" stop-color="#c0bfbc"/><stop offset=".036" stop-color="#fafaf9"/><stop offset=".088" stop-color="#c0bfbc"/><stop offset=".399" stop-color="#d5d5d3"/><stop offset=".491" stop-color="#eaeae9"/><stop offset=".569" stop-color="#a7a5a1"/><stop offset=".966" stop-color="#a9a7a3"/><stop offset="1" stop-color="#fff"/></linearGradient><linearGradient id="a"><stop offset="0" stop-color="#d5d3cf"/><stop offset="1" stop-color="#f6f5f4"/></linearGradient><linearGradient id="b"><stop offset="0" stop-color="#d5d3cf"/><stop offset="1" stop-color="#949390"/></linearGradient><linearGradient id="c"><stop offset="0" stop-color="#9a9996"/><stop offset="1" stop-color="#77767b"/></linearGradient><linearGradient xlink:href="#d" id="g" x1="-142.049" y1="236.001" x2="-9.951" y2="236.001" gradientUnits="userSpaceOnUse"/><radialGradient xlink:href="#e" id="h" cx="90.974" cy="263.479" fx="90.974" fy="263.479" r="22.703" gradientTransform="matrix(1.90297 -.05506 .0501 1.73133 -89.25 -176.863)" gradientUnits="userSpaceOnUse"/><radialGradient xlink:href="#f" id="i" cx="61.718" cy="270.719" fx="61.718" fy="270.719" r="22.703" gradientTransform="matrix(2.49049 0 0 2.92132 -91.99 -503.52)" gradientUnits="userSpaceOnUse"/></defs><path transform="translate(123.265 -118.118) scale(.7798)" d="M-75.74 161.438a10.997 10.997 0 0 0-5.758 1.468l-55.053 31.785a10.997 10.997 0 0 0-5.498 9.524v63.57a10.997 10.997 0 0 0 5.498 9.524l55.053 31.785a10.997 10.997 0 0 0 10.996 0l55.053-31.785a10.997 10.997 0 0 0 5.498-9.524v-63.57a10.997 10.997 0 0 0-5.498-9.524l-55.053-31.785a10.997 10.997 0 0 0-5.238-1.469z" style="marker:none" fill="url(#g)"/><path style="marker:none" d="M64.203 3.77a8.575 8.575 0 0 0-4.49 1.146l-42.93 24.786a8.575 8.575 0 0 0-4.288 7.427V86.7a8.575 8.575 0 0 0 4.287 7.426l42.93 24.786a8.575 8.575 0 0 0 8.575 0l42.93-24.786a8.575 8.575 0 0 0 4.288-7.426V37.129a8.575 8.575 0 0 0-4.287-7.427L68.288 4.916a8.575 8.575 0 0 0-4.085-1.145z" fill="#fff"/><path style="marker:none" d="M109.869 33.297L64 59.779 18.131 33.297 64 6.814z" fill="#98c1f1"/><path style="marker:none" d="M66.263 287.505l45.35-25.884.056-52.762-45.406 26.215z" fill="url(#h)" transform="translate(0 -172)"/><path d="M61.718 287.34l-45.35-25.885-.056-52.761 45.406 26.215z" style="marker:none" fill="url(#i)" transform="translate(0 -172)"/></svg>

demos/gtk-demo/data/symbolic-source.svg

@@ -1,29 +0,0 @@
-<?xml version='1.0' encoding='UTF-8' standalone='no'?>
-<!-- Created with Inkscape (http://www.inkscape.org/) -->
-
-<svg xmlns:cc='http://creativecommons.org/ns#' xmlns:dc='http://purl.org/dc/elements/1.1/' sodipodi:docname='gtk3-demo-symbolic.svg' height='16.000015' id='svg7384' xmlns:inkscape='http://www.inkscape.org/namespaces/inkscape' xmlns:osb='http://www.openswatchbook.org/uri/2009/osb' xmlns:rdf='http://www.w3.org/1999/02/22-rdf-syntax-ns#' xmlns:sodipodi='http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd' xmlns:svg='http://www.w3.org/2000/svg' inkscape:version='0.48.5 r10040' version='1.1' width='16' xmlns='http://www.w3.org/2000/svg'>
-  <metadata id='metadata90'>
-    <rdf:RDF>
-      <cc:Work rdf:about=''>
-        <dc:format>image/svg+xml</dc:format>
-        <dc:type rdf:resource='http://purl.org/dc/dcmitype/StillImage'/>
-        <dc:title>Gnome Symbolic Icon Theme</dc:title>
-      </cc:Work>
-    </rdf:RDF>
-  </metadata>
-  <sodipodi:namedview inkscape:bbox-paths='true' bordercolor='#666666' borderopacity='1' inkscape:current-layer='layer9' inkscape:cx='-12.5126' inkscape:cy='-0.73412416' gridtolerance='10' inkscape:guide-bbox='true' guidetolerance='10' id='namedview88' inkscape:object-nodes='false' inkscape:object-paths='false' objecttolerance='10' pagecolor='#555753' inkscape:pageopacity='1' inkscape:pageshadow='2' showborder='false' showgrid='false' showguides='true' inkscape:snap-bbox='true' inkscape:snap-bbox-midpoints='false' inkscape:snap-global='true' inkscape:snap-grids='true' inkscape:snap-nodes='true' inkscape:snap-others='false' inkscape:snap-to-guides='true' inkscape:window-height='1375' inkscape:window-maximized='1' inkscape:window-width='2560' inkscape:window-x='0' inkscape:window-y='27' inkscape:zoom='5.6568542'>
-    <inkscape:grid empspacing='2' enabled='true' id='grid4866' originx='-182.99998px' originy='-251.99998px' snapvisiblegridlinesonly='true' spacingx='1px' spacingy='1px' type='xygrid' visible='true'/>
-  </sodipodi:namedview>
-  <title id='title9167'>Gnome Symbolic Icon Theme</title>
-  <defs id='defs7386'>
-    <linearGradient id='linearGradient7212' osb:paint='solid'>
-      <stop id='stop7214' offset='0' style='stop-color:#000000;stop-opacity:1;'/>
-    </linearGradient>
-  </defs>
-  <g inkscape:groupmode='layer' id='layer9' inkscape:label='apps' style='display:inline' transform='translate(-424.00018,35)'>
-    
-    <rect height='8.0000048' id='rect7866' style='opacity:0.3;color:#000000;fill:#bebebe;fill-opacity:1;fill-rule:nonzero;stroke:none;stroke-width:1.39999998;marker:none;visibility:visible;display:inline;overflow:visible;enable-background:new' transform='matrix(0.83205029,0.5547002,0,1,0,0)' width='7.2111053' x='510.78668' y='-314.33347'/>
-    <rect height='8.0000086' id='rect7868' style='opacity:0.5;color:#000000;fill:#bebebe;fill-opacity:1;fill-rule:nonzero;stroke:none;stroke-width:1.39999998;marker:none;visibility:visible;display:inline;overflow:visible;enable-background:new' transform='matrix(-0.86824295,0.49613928,0,1,0,0)' width='8.0622425' x='-505.61908' y='219.8575'/>
-    <path inkscape:connector-curvature='0' d='m 431.53145,-28 -5.875,-3.65625 6.8125,-3.34375 6.03125,3 z' id='path7870' sodipodi:nodetypes='ccccc' style='color:#000000;fill:#bebebe;fill-opacity:1;fill-rule:nonzero;stroke:none;stroke-width:1.39999998;marker:none;visibility:visible;display:inline;overflow:visible;enable-background:new'/>
-  </g>
-</svg>

demos/gtk-demo/data/symbolic/apps/org.gtk.Demo4-symbolic.svg

@@ -0,0 +1,114 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!-- Created with Inkscape (http://www.inkscape.org/) -->
+
+<svg
+   xmlns:osb="http://www.openswatchbook.org/uri/2009/osb"
+   xmlns:dc="http://purl.org/dc/elements/1.1/"
+   xmlns:cc="http://creativecommons.org/ns#"
+   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+   xmlns:svg="http://www.w3.org/2000/svg"
+   xmlns="http://www.w3.org/2000/svg"
+   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
+   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
+   sodipodi:docname="org.gtk.Demo4-symbolic.svg"
+   height="16.03125"
+   id="svg7384"
+   inkscape:version="0.92.4 5da689c313, 2019-01-14"
+   version="1.1"
+   width="16">
+  <metadata
+     id="metadata90">
+    <rdf:RDF>
+      <cc:Work
+         rdf:about="">
+        <dc:format>image/svg+xml</dc:format>
+        <dc:type
+           rdf:resource="http://purl.org/dc/dcmitype/StillImage" />
+        <dc:title>Gnome Symbolic Icon Theme</dc:title>
+      </cc:Work>
+    </rdf:RDF>
+  </metadata>
+  <sodipodi:namedview
+     inkscape:bbox-paths="true"
+     bordercolor="#666666"
+     borderopacity="1"
+     inkscape:current-layer="layer9"
+     inkscape:cx="0.53203442"
+     inkscape:cy="9.1822592"
+     gridtolerance="10"
+     inkscape:guide-bbox="true"
+     guidetolerance="10"
+     id="namedview88"
+     inkscape:object-nodes="false"
+     inkscape:object-paths="false"
+     objecttolerance="10"
+     pagecolor="#555753"
+     inkscape:pageopacity="1"
+     inkscape:pageshadow="2"
+     showborder="true"
+     showgrid="false"
+     showguides="true"
+     inkscape:snap-bbox="true"
+     inkscape:snap-bbox-midpoints="false"
+     inkscape:snap-global="true"
+     inkscape:snap-grids="true"
+     inkscape:snap-nodes="true"
+     inkscape:snap-others="false"
+     inkscape:snap-to-guides="true"
+     inkscape:window-height="1375"
+     inkscape:window-maximized="1"
+     inkscape:window-width="2560"
+     inkscape:window-x="0"
+     inkscape:window-y="27"
+     inkscape:zoom="1">
+    <inkscape:grid
+       empspacing="2"
+       enabled="true"
+       id="grid4866"
+       originx="-203"
+       originy="-251.96875"
+       snapvisiblegridlinesonly="true"
+       spacingx="1"
+       spacingy="1"
+       type="xygrid"
+       visible="true" />
+  </sodipodi:namedview>
+  <title
+     id="title9167">Gnome Symbolic Icon Theme</title>
+  <defs
+     id="defs7386">
+    <linearGradient
+       id="linearGradient7212"
+       osb:paint="solid">
+      <stop
+         id="stop7214"
+         offset="0"
+         style="stop-color:#000000;stop-opacity:1;" />
+    </linearGradient>
+  </defs>
+  <g
+     inkscape:groupmode="layer"
+     id="layer9"
+     inkscape:label="apps"
+     style="display:inline"
+     transform="translate(-444.0002,35)">
+    <path
+       style="display:inline;opacity:0.3;vector-effect:none;fill:#000000;fill-opacity:1;stroke:none;stroke-width:0.99999994;stroke-linecap:butt;stroke-linejoin:bevel;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1;marker:none;marker-start:none;marker-mid:none;marker-end:none;paint-order:normal;enable-background:new"
+       d="m 457.97232,-31.569556 -5.96212,3.44224 -5.96215,-3.44224 v 0 l 5.96215,-3.44226 z"
+       id="path870-6"
+       inkscape:connector-curvature="0"
+       sodipodi:nodetypes="cccccc" />
+    <path
+       sodipodi:nodetypes="cccccc"
+       inkscape:connector-curvature="0"
+       id="path886-9"
+       d="m 450.98519,-19.648086 -5.99273,-3.42041 -0.007,-6.97219 v 0 l 6.00018,3.4642 z"
+       style="display:inline;opacity:1;vector-effect:none;fill:#000000;fill-opacity:1;stroke:none;stroke-width:0.99999994;stroke-linecap:butt;stroke-linejoin:bevel;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1;marker:none;marker-start:none;marker-mid:none;marker-end:none;paint-order:normal;enable-background:new" />
+    <path
+       style="display:inline;opacity:0.60100002;vector-effect:none;fill:#000000;fill-opacity:1;stroke:none;stroke-width:0.99999994;stroke-linecap:butt;stroke-linejoin:bevel;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1;marker:none;marker-start:none;marker-mid:none;marker-end:none;paint-order:normal;enable-background:new"
+       d="m 452.98577,-19.648086 5.99273,-3.42041 0.007,-6.97219 v 0 l -6.00018,3.4642 z"
+       id="path931"
+       inkscape:connector-curvature="0"
+       sodipodi:nodetypes="cccccc" />
+  </g>
+</svg>

demos/gtk-demo/demo.gresource.xml

@@ -57,6 +57,7 @@
     <file>reset.css</file>
   </gresource>
   <gresource prefix="/cursors">
+    <file>cursors.ui</file>
     <file>alias_cursor.png</file>
     <file>all_scroll_cursor.png</file>
     <file>cell_cursor.png</file>
@@ -67,6 +68,7 @@
     <file>default_cursor.png</file>
     <file>e_resize_cursor.png</file>
     <file>ew_resize_cursor.png</file>
+    <file>gtk_logo_cursor.png</file>
     <file>grabbing_cursor.png</file>
     <file>grab_cursor.png</file>
     <file>hand_cursor.png</file>
@@ -103,9 +105,6 @@
     <file>gnome-fs-directory.png</file>
     <file>gnome-fs-regular.png</file>
   </gresource>
-  <gresource prefix="/stack">
-    <file>stack.ui</file>
-  </gresource>
   <gresource prefix="/shortcuts">
     <file>shortcuts.ui</file>
     <file>shortcuts-builder.ui</file>
@@ -113,12 +112,21 @@
     <file>shortcuts-clocks.ui</file>
     <file>shortcuts-boxes.ui</file>
   </gresource>
+  <gresource prefix="/sliding_puzzle">
+    <file>puzzlepiece.c</file>
+    <file>puzzlepiece.h</file>
+    <file>portland-rose.jpg</file>
+  </gresource>
+  <gresource prefix="/stack">
+    <file>stack.ui</file>
+  </gresource>
   <gresource prefix="/revealer">
     <file>revealer.ui</file>
   </gresource>
   <gresource prefix="/images">
     <file>alphatest.png</file>
     <file>floppybuddy.gif</file>
+    <file>gtk-logo.webm</file>
   </gresource>
   <gresource prefix="/pixbufs">
     <file>apple-red.png</file>
@@ -135,7 +143,6 @@
     <file>application_demo.c</file>
     <file>assistant.c</file>
     <file>builder.c</file>
-    <file>button_box.c</file>
     <file>changedisplay.c</file>
     <file>clipboard.c</file>
     <file>colorsel.c</file>
@@ -149,17 +156,18 @@
     <file>cursors.c</file>
     <file>dialog.c</file>
     <file>drawingarea.c</file>
+    <file>dnd.c</file>
     <file>editable_cells.c</file>
     <file>entry_buffer.c</file>
     <file>entry_completion.c</file>
-    <file>event_axes.c</file>
     <file>expander.c</file>
     <file>filtermodel.c</file>
     <file>fishbowl.c</file>
-    <file>widgetbowl.c</file>
+    <file>fixed.c</file>
     <file>flowbox.c</file>
     <file>foreigndrawing.c</file>
     <file>font_features.c</file>
+    <file>fontplane.c</file>
     <file>gestures.c</file>
     <file>glarea.c</file>
     <file>headerbar.c</file>
@@ -176,8 +184,13 @@
     <file>modelbutton.c</file>
     <file>overlay.c</file>
     <file>overlay2.c</file>
+    <file>paint.c</file>
     <file>pagesetup.c</file>
+    <file>paintable.c</file>
+    <file>paintable_animated.c</file>
+    <file>paintable_mediastream.c</file>
     <file>panes.c</file>
+    <file>password_entry.c</file>
     <file>pickers.c</file>
     <file>pixbufs.c</file>
     <file>popover.c</file>
@@ -190,21 +203,26 @@
     <file>shortcuts.c</file>
     <file>sizegroup.c</file>
     <file>sidebar.c</file>
+    <file>sliding_puzzle.c</file>
     <file>stack.c</file>
     <file>spinbutton.c</file>
     <file>spinner.c</file>
     <file>tabs.c</file>
+    <file>tagged_entry.c</file>
     <file>textview.c</file>
     <file>textscroll.c</file>
     <file>theming_style_classes.c</file>
-    <file>toolpalette.c</file>
     <file>transparent.c</file>
     <file>tree_store.c</file>
     <file>textmask.c</file>
+    <file>video_player.c</file>
   </gresource>
   <gresource prefix="/textview">
     <file>floppybuddy.gif</file>
   </gresource>
+  <gresource prefix="/tagged_entry">
+    <file>tagstyle.css</file>
+  </gresource>
   <gresource prefix="/listbox">
     <file>listbox.ui</file>
     <file>messages.txt</file>
@@ -221,6 +239,7 @@
   </gresource>
   <gresource prefix="/font_features">
     <file>font-features.ui</file>
+    <file>fontplane.c</file>
   </gresource>
   <gresource prefix="/spinbutton">
     <file>spinbutton.ui</file>
@@ -234,6 +253,7 @@
   </gresource>
   <gresource prefix="/transparent">
     <file>portland-rose.jpg</file>
+    <file>bluroverlay.c</file>
   </gresource>
   <gresource prefix="/markup">
     <file>markup.txt</file>
@@ -244,4 +264,33 @@
   <gresource prefix="/modelbutton">
     <file>modelbutton.ui</file>
   </gresource>
+  <gresource prefix="/dnd">
+    <file>dnd.css</file>
+  </gresource>
+  <gresource prefix="/tagged_entry">
+    <file>demotaggedentry.c</file>
+    <file>demotaggedentry.h</file>
+  </gresource>
+  <gresource prefix="/fixed">
+    <file>fixed.css</file>
+  </gresource>
+  <gresource prefix="/org/gtk/Demo4">
+    <file>icons/16x16/actions/application-exit.png</file>
+    <file>icons/16x16/actions/document-new.png</file>
+    <file>icons/16x16/actions/document-open.png</file>
+    <file>icons/16x16/actions/document-save.png</file>
+    <file>icons/16x16/actions/edit-copy.png</file>
+    <file>icons/16x16/actions/edit-cut.png</file>
+    <file>icons/16x16/actions/edit-paste.png</file>
+    <file>icons/16x16/actions/process-stop.png</file>
+    <file>icons/16x16/actions/go-home.png</file>
+    <file>icons/16x16/actions/go-up.png</file>
+    <file>icons/16x16/actions/mail-send-receive-symbolic.symbolic.png</file>
+    <file>icons/16x16/actions/view-fullscreen-symbolic.symbolic.png</file>
+    <file>icons/16x16/actions/document-edit-symbolic.symbolic.png</file>
+    <file>icons/16x16/emotes/face-cool.png</file>
+    <file>icons/16x16/emotes/face-laugh-symbolic.symbolic.png</file>
+    <file>icons/16x16/status/battery-caution-charging-symbolic.symbolic.png</file>
+    <file>icons/16x16/categories/applications-other.png</file>
+  </gresource>
 </gresources>

demos/gtk-demo/demo.ui

@@ -1,5 +1,4 @@
-<?xml version="1.0" standalone="no"?>
-<!--*- mode: xml -*-->
+<?xml version="1.0" encoding="UTF-8"?>
 <interface>
   <object class="GtkListStore" id="liststore1">
     <columns>
@@ -31,16 +30,14 @@
     </accessibility>
   </object>
   <object class="GtkWindow" id="window1">
-    <property name="default_height">250</property>
-    <property name="default_width">440</property>
+    <property name="default-height">250</property>
+    <property name="default-width">440</property>
     <property name="title" translatable="yes">Builder</property>
     <child>
       <object class="GtkBox" id="vbox1">
-        <property name="visible">1</property>
         <property name="orientation">vertical</property>
         <child>
           <object class="GtkMenuBar" id="menubar1">
-            <property name="visible">1</property>
             <child internal-child="accessible">
               <object class="AtkObject" id="a11y-menubar">
                 <property name="AtkObject::accessible-name">The menubar</property>
@@ -48,48 +45,40 @@
             </child>
             <child>
               <object class="GtkMenuItem">
-                <property name="visible">1</property>
                 <property name="label" translatable="yes">_File</property>
                 <property name="use-underline">1</property>
                 <child type="submenu">
                   <object class="GtkMenu">
                     <child>
                       <object class="GtkMenuItem" id="new_item">
-                        <property name="visible">1</property>
                         <property name="label" translatable="yes">_New</property>
                         <property name="use-underline">1</property>
                       </object>
                     </child>
                     <child>
                       <object class="GtkMenuItem" id="open_item">
-                        <property name="visible">1</property>
                         <property name="label" translatable="yes">_Open</property>
                         <property name="use-underline">1</property>
                       </object>
                     </child>
                     <child>
                       <object class="GtkMenuItem" id="save_item">
-                        <property name="visible">1</property>
                         <property name="label" translatable="yes">_Save</property>
                         <property name="use-underline">1</property>
                       </object>
                     </child>
                     <child>
                       <object class="GtkMenuItem" id="save_as_item">
-                        <property name="visible">1</property>
                         <property name="label" translatable="yes">Save _As</property>
                         <property name="use-underline">1</property>
                         <accelerator key="s" modifiers="primary | shift-mask" signal="activate"/>
                       </object>
                     </child>
                     <child>
-                      <object class="GtkSeparatorMenuItem">
-                        <property name="visible">1</property>
-                      </object>
+                      <object class="GtkSeparatorMenuItem"/>
                     </child>
                     <child>
                       <object class="GtkMenuItem" id="quit_item">
-                        <property name="visible">1</property>
                         <property name="label" translatable="yes">_Quit</property>
                         <property name="use-underline">1</property>
                         <property name="action-name">win.quit</property>
@@ -101,28 +90,24 @@
             </child>
             <child>
               <object class="GtkMenuItem">
-                <property name="visible">1</property>
                 <property name="label" translatable="yes">_Edit</property>
                 <property name="use-underline">1</property>
                 <child type="submenu">
                   <object class="GtkMenu">
                     <child>
                       <object class="GtkMenuItem" id="copy_item">
-                        <property name="visible">1</property>
                         <property name="label" translatable="yes">_Copy</property>
                         <property name="use-underline">1</property>
                       </object>
                     </child>
                     <child>
                       <object class="GtkMenuItem" id="cut_item">
-                        <property name="visible">1</property>
                         <property name="label" translatable="yes">_Cut</property>
                         <property name="use-underline">1</property>
                       </object>
                     </child>
                     <child>
                       <object class="GtkMenuItem" id="paste_item">
-                        <property name="visible">1</property>
                         <property name="label" translatable="yes">_Paste</property>
                         <property name="use-underline">1</property>
                       </object>
@@ -133,14 +118,12 @@
             </child>
             <child>
               <object class="GtkMenuItem">
-                <property name="visible">1</property>
                 <property name="label" translatable="yes">_Help</property>
                 <property name="use-underline">1</property>
                 <child type="submenu">
                   <object class="GtkMenu">
                     <child>
                       <object class="GtkMenuItem" id="help_item">
-                        <property name="visible">1</property>
                         <property name="label" translatable="yes">_Help</property>
                         <property name="use-underline">1</property>
                         <property name="action-name">win.help</property>
@@ -148,7 +131,6 @@
                     </child>
                     <child>
                       <object class="GtkMenuItem" id="about_item">
-                        <property name="visible">1</property>
                         <property name="label" translatable="yes">_About</property>
                         <property name="use-underline">1</property>
                         <property name="action-name">win.about</property>
@@ -162,7 +144,6 @@
         </child>
         <child>
           <object class="GtkToolbar" id="toolbar1">
-            <property name="visible">1</property>
             <child internal-child="accessible">
               <object class="AtkObject" id="a11y-toolbar">
                 <property name="AtkObject::accessible-name">The toolbar</property>
@@ -170,7 +151,6 @@
             </child>
             <child>
               <object class="GtkToolButton">
-                <property name="visible">1</property>
                 <property name="label" translatable="yes">New</property>
                 <property name="tooltip-text" translatable="yes">Create a new file</property>
                 <property name="icon-name">document-new</property>
@@ -178,7 +158,6 @@
             </child>
             <child>
               <object class="GtkToolButton">
-                <property name="visible">1</property>
                 <property name="label" translatable="yes">Open</property>
                 <property name="tooltip-text" translatable="yes">Open a file</property>
                 <property name="icon-name">document-open</property>
@@ -186,7 +165,6 @@
             </child>
             <child>
               <object class="GtkToolButton">
-                <property name="visible">1</property>
                 <property name="label" translatable="yes">Save</property>
                 <property name="tooltip-text" translatable="yes">Save a file</property>
                 <property name="icon-name">document-save</property>
@@ -194,13 +172,10 @@
               </object>
             </child>
             <child>
-              <object class="GtkSeparatorToolItem">
-                <property name="visible">1</property>
-              </object>
+              <object class="GtkSeparatorToolItem"/>
             </child>
             <child>
               <object class="GtkToolButton">
-                <property name="visible">1</property>
                 <property name="label" translatable="yes">Copy</property>
                 <property name="tooltip-text" translatable="yes">Copy selected object into the clipboard</property>
                 <property name="icon-name">edit-copy</property>
@@ -208,7 +183,6 @@
             </child>
             <child>
               <object class="GtkToolButton">
-                <property name="visible">1</property>
                 <property name="label" translatable="yes">Cut</property>
                 <property name="tooltip-text" translatable="yes">Cut selected object into the clipboard</property>
                 <property name="icon-name">edit-cut</property>
@@ -216,25 +190,19 @@
             </child>
             <child>
               <object class="GtkToolButton">
-                <property name="visible">1</property>
                 <property name="label" translatable="yes">Paste</property>
                 <property name="tooltip-text" translatable="yes">Paste object from the clipboard</property>
                 <property name="icon-name">edit-paste</property>
               </object>
             </child>
           </object>
-          <packing>
-            <property name="position">1</property>
-          </packing>
         </child>
         <child>
           <object class="GtkScrolledWindow" id="scrolledwindow1">
-            <property name="shadow_type">in</property>
-            <property name="visible">1</property>
+            <property name="shadow-type">in</property>
             <property name="expand">1</property>
             <child>
               <object class="GtkTreeView" id="treeview1">
-                <property name="visible">1</property>
                 <property name="model">liststore1</property>
                 <property name="tooltip-column">3</property>
                 <child internal-child="accessible">
@@ -281,17 +249,9 @@
               </object>
             </child>
           </object>
-          <packing>
-            <property name="position">2</property>
-          </packing>
         </child>
         <child>
-          <object class="GtkStatusbar" id="statusbar1">
-            <property name="visible">1</property>
-          </object>
-          <packing>
-            <property name="position">3</property>
-          </packing>
+          <object class="GtkStatusbar" id="statusbar1"/>
         </child>
       </object>
     </child>

demos/gtk-demo/demotaggedentry.c

@@ -0,0 +1,493 @@
+/* GTK - The GIMP Toolkit
+ * Copyright (C) 2019 Red Hat, Inc.
+ *
+ * Authors:
+ * - Matthias Clasen <mclasen@redhat.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "config.h"
+
+#include "demotaggedentry.h"
+
+#include <gtk/gtk.h>
+#include <gtk/gtk-a11y.h>
+
+typedef struct {
+  GtkWidget *box;
+  GtkWidget *entry;
+} DemoTaggedEntryPrivate;
+
+static void demo_tagged_entry_editable_init (GtkEditableInterface *iface);
+
+G_DEFINE_TYPE_WITH_CODE (DemoTaggedEntry, demo_tagged_entry, GTK_TYPE_WIDGET,
+                         G_ADD_PRIVATE (DemoTaggedEntry)
+                         G_IMPLEMENT_INTERFACE (GTK_TYPE_EDITABLE, demo_tagged_entry_editable_init))
+
+static void
+demo_tagged_entry_init (DemoTaggedEntry *entry)
+{
+  DemoTaggedEntryPrivate *priv = demo_tagged_entry_get_instance_private (entry);
+
+  gtk_widget_set_has_surface (GTK_WIDGET (entry), FALSE);
+
+  priv->box = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 0);
+  gtk_widget_set_parent (priv->box, GTK_WIDGET (entry));
+
+  priv->entry = gtk_text_new ();
+  gtk_widget_set_hexpand (priv->entry, TRUE);
+  gtk_widget_set_vexpand (priv->entry, TRUE);
+  gtk_widget_set_hexpand (priv->box, FALSE);
+  gtk_widget_set_vexpand (priv->box, FALSE);
+  gtk_container_add (GTK_CONTAINER (priv->box), priv->entry);
+  gtk_editable_init_delegate (GTK_EDITABLE (entry));
+}
+
+static void
+demo_tagged_entry_dispose (GObject *object)
+{
+  DemoTaggedEntry *entry = DEMO_TAGGED_ENTRY (object);
+  DemoTaggedEntryPrivate *priv = demo_tagged_entry_get_instance_private (entry);
+
+  if (priv->entry)
+    gtk_editable_finish_delegate (GTK_EDITABLE (entry));
+
+  g_clear_pointer (&priv->entry, gtk_widget_unparent);
+  g_clear_pointer (&priv->box, gtk_widget_unparent);
+
+  G_OBJECT_CLASS (demo_tagged_entry_parent_class)->dispose (object);
+}
+
+static void
+demo_tagged_entry_finalize (GObject *object)
+{
+  G_OBJECT_CLASS (demo_tagged_entry_parent_class)->finalize (object);
+}
+
+static void
+demo_tagged_entry_set_property (GObject      *object,
+                                guint         prop_id,
+                                const GValue *value,
+                                GParamSpec   *pspec)
+{
+  if (gtk_editable_delegate_set_property (object, prop_id, value, pspec))
+    return;
+
+  G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+}
+
+static void
+demo_tagged_entry_get_property (GObject    *object,
+                                guint       prop_id,
+                                GValue     *value,
+                                GParamSpec *pspec)
+{
+  if (gtk_editable_delegate_get_property (object, prop_id, value, pspec))
+    return;
+
+  G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+}
+
+static void
+demo_tagged_entry_measure (GtkWidget      *widget,
+                           GtkOrientation  orientation,
+                           int             for_size,
+                           int            *minimum,
+                           int            *natural,
+                           int            *minimum_baseline,
+                           int            *natural_baseline)
+{
+  DemoTaggedEntry *entry = DEMO_TAGGED_ENTRY (widget);
+  DemoTaggedEntryPrivate *priv = demo_tagged_entry_get_instance_private (entry);
+
+  gtk_widget_measure (priv->box, orientation, for_size,
+                      minimum, natural,
+                      minimum_baseline, natural_baseline);
+}
+
+static void
+demo_tagged_entry_size_allocate (GtkWidget *widget,
+                                 int        width,
+                                 int        height,
+                                 int        baseline)
+{
+  DemoTaggedEntry *entry = DEMO_TAGGED_ENTRY (widget);
+  DemoTaggedEntryPrivate *priv = demo_tagged_entry_get_instance_private (entry);
+
+  gtk_widget_size_allocate (priv->box,
+                            &(GtkAllocation) { 0, 0, width, height },
+                            baseline);
+}
+
+static void
+demo_tagged_entry_grab_focus (GtkWidget *widget)
+{
+  DemoTaggedEntry *entry = DEMO_TAGGED_ENTRY (widget);
+  DemoTaggedEntryPrivate *priv = demo_tagged_entry_get_instance_private (entry);
+
+  gtk_widget_grab_focus (priv->entry);
+}
+
+static void
+demo_tagged_entry_class_init (DemoTaggedEntryClass *klass)
+{
+  GObjectClass *object_class = G_OBJECT_CLASS (klass);
+  GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
+
+  object_class->dispose = demo_tagged_entry_dispose;
+  object_class->finalize = demo_tagged_entry_finalize;
+  object_class->get_property = demo_tagged_entry_get_property;
+  object_class->set_property = demo_tagged_entry_set_property;
+
+  widget_class->measure = demo_tagged_entry_measure;
+  widget_class->size_allocate = demo_tagged_entry_size_allocate;
+  widget_class->grab_focus = demo_tagged_entry_grab_focus;
+ 
+  gtk_editable_install_properties (object_class, 1);
+
+  gtk_widget_class_set_accessible_type (widget_class, GTK_TYPE_ENTRY_ACCESSIBLE);
+  gtk_widget_class_set_css_name (widget_class, "entry");
+}
+
+static GtkEditable *
+demo_tagged_entry_get_delegate (GtkEditable *editable)
+{
+  DemoTaggedEntry *entry = DEMO_TAGGED_ENTRY (editable);
+  DemoTaggedEntryPrivate *priv = demo_tagged_entry_get_instance_private (entry);
+
+  return GTK_EDITABLE (priv->entry);
+}
+
+static void
+demo_tagged_entry_editable_init (GtkEditableInterface *iface)
+{
+  iface->get_delegate = demo_tagged_entry_get_delegate;
+}
+
+GtkWidget *
+demo_tagged_entry_new (void)
+{
+  return GTK_WIDGET (g_object_new (DEMO_TYPE_TAGGED_ENTRY, NULL));
+}
+
+void
+demo_tagged_entry_add_tag (DemoTaggedEntry *entry,
+                           GtkWidget       *tag)
+{
+  DemoTaggedEntryPrivate *priv = demo_tagged_entry_get_instance_private (entry);
+
+  g_return_if_fail (DEMO_IS_TAGGED_ENTRY (entry));
+
+  gtk_container_add (GTK_CONTAINER (priv->box), tag);
+}
+
+void
+demo_tagged_entry_insert_tag_after (DemoTaggedEntry *entry,
+                                    GtkWidget       *tag,
+                                    GtkWidget       *sibling)
+{
+  DemoTaggedEntryPrivate *priv = demo_tagged_entry_get_instance_private (entry);
+
+  g_return_if_fail (DEMO_IS_TAGGED_ENTRY (entry));
+
+  if (sibling == NULL)
+    gtk_container_add (GTK_CONTAINER (priv->box), tag);
+  else
+    gtk_box_insert_child_after (GTK_BOX (priv->box), tag, sibling); 
+}
+
+void
+demo_tagged_entry_remove_tag (DemoTaggedEntry *entry,
+                              GtkWidget       *tag)
+{
+  DemoTaggedEntryPrivate *priv = demo_tagged_entry_get_instance_private (entry);
+
+  g_return_if_fail (DEMO_IS_TAGGED_ENTRY (entry));
+
+  gtk_container_remove (GTK_CONTAINER (priv->box), tag);
+}
+
+struct _DemoTaggedEntryTag
+{
+  GtkWidget parent;
+  GtkWidget *box;
+  GtkWidget *label;
+  GtkWidget *button;
+
+  gboolean has_close_button;
+  char *style;
+};
+
+struct _DemoTaggedEntryTagClass
+{
+  GtkWidgetClass parent_class;
+};
+
+enum {
+  PROP_0,
+  PROP_LABEL,
+  PROP_HAS_CLOSE_BUTTON,
+};
+
+enum {
+  SIGNAL_CLICKED,
+  SIGNAL_BUTTON_CLICKED,
+  LAST_SIGNAL
+};
+
+static guint signals[LAST_SIGNAL] = { 0, };
+
+G_DEFINE_TYPE (DemoTaggedEntryTag, demo_tagged_entry_tag, GTK_TYPE_WIDGET)
+
+static void
+on_released (GtkGestureMultiPress *gesture,
+             int                   n_press,
+             double                x,
+             double                y,
+             DemoTaggedEntryTag          *tag)
+{
+  g_signal_emit (tag, signals[SIGNAL_CLICKED], 0);
+}
+
+static void
+demo_tagged_entry_tag_init (DemoTaggedEntryTag *tag)
+{
+  GtkGesture *gesture;
+  GtkCssProvider *provider;
+
+  gtk_widget_set_has_surface (GTK_WIDGET (tag), FALSE);
+
+  tag->box = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 0);
+  gtk_widget_set_parent (tag->box, GTK_WIDGET (tag));
+  tag->label = gtk_label_new ("");
+  gtk_container_add (GTK_CONTAINER (tag->box), tag->label);
+
+  gesture = gtk_gesture_multi_press_new ();
+  g_signal_connect (gesture, "released", G_CALLBACK (on_released), tag);
+  gtk_widget_add_controller (GTK_WIDGET (tag), GTK_EVENT_CONTROLLER (gesture));
+
+  provider = gtk_css_provider_new ();
+  gtk_css_provider_load_from_resource (provider, "/tagged_entry/tagstyle.css");
+  gtk_style_context_add_provider_for_display (gdk_display_get_default (),
+                                              GTK_STYLE_PROVIDER (provider),
+                                              800);
+  g_object_unref (provider);
+}
+
+static void
+demo_tagged_entry_tag_dispose (GObject *object)
+{
+  DemoTaggedEntryTag *tag = DEMO_TAGGED_ENTRY_TAG (object);
+
+  g_clear_pointer (&tag->box, gtk_widget_unparent);
+
+  G_OBJECT_CLASS (demo_tagged_entry_tag_parent_class)->dispose (object);
+}
+
+static void
+demo_tagged_entry_tag_finalize (GObject *object)
+{
+  DemoTaggedEntryTag *tag = DEMO_TAGGED_ENTRY_TAG (object);
+
+  g_clear_pointer (&tag->box, gtk_widget_unparent);
+  g_clear_pointer (&tag->style, g_free);
+
+  G_OBJECT_CLASS (demo_tagged_entry_tag_parent_class)->finalize (object);
+}
+
+static void
+demo_tagged_entry_tag_set_property (GObject      *object,
+                                    guint         prop_id,
+                                    const GValue *value,
+                                    GParamSpec   *pspec)
+{
+  DemoTaggedEntryTag *tag = DEMO_TAGGED_ENTRY_TAG (object);
+
+  switch (prop_id)
+    {
+    case PROP_LABEL:
+      demo_tagged_entry_tag_set_label (tag, g_value_get_string (value));
+      break;
+
+    case PROP_HAS_CLOSE_BUTTON:
+      demo_tagged_entry_tag_set_has_close_button (tag, g_value_get_boolean (value));
+      break;
+
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+      break;
+    }
+}
+
+static void
+demo_tagged_entry_tag_get_property (GObject    *object,
+                                    guint       prop_id,
+                                    GValue     *value,
+                                    GParamSpec *pspec)
+{
+  DemoTaggedEntryTag *tag = DEMO_TAGGED_ENTRY_TAG (object);
+
+  switch (prop_id)
+    {
+    case PROP_LABEL:
+      g_value_set_string (value, demo_tagged_entry_tag_get_label (tag));
+      break;
+
+    case PROP_HAS_CLOSE_BUTTON:
+      g_value_set_boolean (value, demo_tagged_entry_tag_get_has_close_button (tag));
+      break;
+
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+      break;
+    }
+}
+
+static void
+demo_tagged_entry_tag_measure (GtkWidget      *widget,
+                               GtkOrientation  orientation,
+                               int             for_size,
+                               int            *minimum,
+                               int            *natural,
+                               int            *minimum_baseline,
+                               int            *natural_baseline)
+{
+  DemoTaggedEntryTag *tag = DEMO_TAGGED_ENTRY_TAG (widget);
+
+  gtk_widget_measure (tag->box, orientation, for_size,
+                      minimum, natural,
+                      minimum_baseline, natural_baseline);
+}
+
+static void
+demo_tagged_entry_tag_size_allocate (GtkWidget *widget,
+                                     int        width,
+                                     int        height,
+                                     int        baseline)
+{
+  DemoTaggedEntryTag *tag = DEMO_TAGGED_ENTRY_TAG (widget);
+
+  gtk_widget_size_allocate (tag->box,
+                            &(GtkAllocation) { 0, 0, width, height },
+                            baseline);
+}
+
+static void
+demo_tagged_entry_tag_class_init (DemoTaggedEntryTagClass *class)
+{
+  GObjectClass *object_class = G_OBJECT_CLASS (class);
+  GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
+
+  object_class->dispose = demo_tagged_entry_tag_dispose;
+  object_class->finalize = demo_tagged_entry_tag_finalize;
+  object_class->set_property = demo_tagged_entry_tag_set_property;
+  object_class->get_property = demo_tagged_entry_tag_get_property;
+
+  widget_class->measure = demo_tagged_entry_tag_measure;
+  widget_class->size_allocate = demo_tagged_entry_tag_size_allocate;
+
+  signals[SIGNAL_CLICKED] =
+      g_signal_new ("clicked",
+                    DEMO_TYPE_TAGGED_ENTRY_TAG,
+                    G_SIGNAL_RUN_FIRST,
+                    0, NULL, NULL, NULL,
+                    G_TYPE_NONE, 0);
+  signals[SIGNAL_BUTTON_CLICKED] =
+      g_signal_new ("button-clicked",
+                    DEMO_TYPE_TAGGED_ENTRY_TAG,
+                    G_SIGNAL_RUN_FIRST,
+                    0, NULL, NULL, NULL,
+                    G_TYPE_NONE, 0);
+
+  g_object_class_install_property (object_class, PROP_LABEL,
+      g_param_spec_string ("label", "Label", "Label",
+                           NULL, G_PARAM_READWRITE));
+  g_object_class_install_property (object_class, PROP_HAS_CLOSE_BUTTON,
+      g_param_spec_boolean ("has-close-button", "Has close button", "Whether this tag has a close button",
+                            FALSE, G_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
+
+  gtk_widget_class_set_css_name (widget_class, "tag");
+}
+
+DemoTaggedEntryTag *
+demo_tagged_entry_tag_new (const char *label)
+{
+  return DEMO_TAGGED_ENTRY_TAG (g_object_new (DEMO_TYPE_TAGGED_ENTRY_TAG,
+                                              "label", label,
+                                              NULL));
+}
+
+const char *
+demo_tagged_entry_tag_get_label (DemoTaggedEntryTag *tag)
+{
+  g_return_val_if_fail (DEMO_IS_TAGGED_ENTRY_TAG (tag), NULL);
+
+  return gtk_label_get_label (GTK_LABEL (tag->label));
+}
+
+void
+demo_tagged_entry_tag_set_label (DemoTaggedEntryTag *tag,
+                                 const char         *label)
+{
+  g_return_if_fail (DEMO_IS_TAGGED_ENTRY_TAG (tag));
+
+  gtk_label_set_label (GTK_LABEL (tag->label), label);
+}
+
+static void
+on_button_clicked (GtkButton          *button,
+                   DemoTaggedEntryTag *tag)
+{
+  g_signal_emit (tag, signals[SIGNAL_BUTTON_CLICKED], 0);
+}
+
+void
+demo_tagged_entry_tag_set_has_close_button (DemoTaggedEntryTag *tag,
+                                            gboolean            has_close_button)
+{
+  g_return_if_fail (DEMO_IS_TAGGED_ENTRY_TAG (tag));
+
+  if ((tag->button != NULL) == has_close_button)
+    return;
+
+  if (!has_close_button && tag->button)
+    {
+      gtk_container_remove (GTK_CONTAINER (tag->box), tag->button);
+      tag->button = NULL;
+    }
+  else if (has_close_button && tag->button == NULL)
+    {
+      GtkWidget *image;
+
+      image = gtk_image_new_from_icon_name ("window-close-symbolic");
+      tag->button = gtk_button_new ();
+      gtk_container_add (GTK_CONTAINER (tag->button), image);
+      gtk_widget_set_halign (tag->button, GTK_ALIGN_CENTER);
+      gtk_widget_set_valign (tag->button, GTK_ALIGN_CENTER);
+      gtk_button_set_relief (GTK_BUTTON (tag->button), GTK_RELIEF_NONE);
+      gtk_container_add (GTK_CONTAINER (tag->box), tag->button);
+      g_signal_connect (tag->button, "clicked", G_CALLBACK (on_button_clicked), tag);
+    }
+
+  g_object_notify (G_OBJECT (tag), "has-close-button");
+}
+
+gboolean
+demo_tagged_entry_tag_get_has_close_button (DemoTaggedEntryTag *tag)
+{
+  g_return_val_if_fail (DEMO_IS_TAGGED_ENTRY_TAG (tag), FALSE);
+
+  return tag->button != NULL;
+}

demos/gtk-demo/demotaggedentry.h

@@ -0,0 +1,89 @@
+/* GTK - The GIMP Toolkit
+ * Copyright (C) 2019 Red Hat, Inc.
+ *
+ * Authors:
+ * - Matthias Clasen <mclasen@redhat.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef __DEMO_TAGGED_ENTRY_H__
+#define __DEMO_TAGGED_ENTRY_H__
+
+#include <gtk/gtk.h>
+
+G_BEGIN_DECLS
+
+#define DEMO_TYPE_TAGGED_ENTRY                 (demo_tagged_entry_get_type ())
+#define DEMO_TAGGED_ENTRY(obj)                 (G_TYPE_CHECK_INSTANCE_CAST ((obj), DEMO_TYPE_TAGGED_ENTRY, DemoTaggedEntry))
+#define DEMO_TAGGED_ENTRY_CLASS(klass)         (G_TYPE_CHECK_CLASS_CAST ((klass), DEMO_TYPE_TAGGED_ENTRY, DemoTaggedEntryClass))
+#define DEMO_IS_TAGGED_ENTRY(obj)              (G_TYPE_CHECK_INSTANCE_TYPE ((obj), DEMO_TYPE_TAGGED_ENTRY))
+#define DEMO_IS_TAGGED_ENTRY_CLASS(klass)      (G_TYPE_CHECK_CLASS_TYPE ((klass), DEMO_TYPE_TAGGED_ENTRY))
+#define DEMO_TAGGED_ENTRY_GET_CLASS(obj)       (G_TYPE_INSTANCE_GET_CLASS ((obj), DEMO_TYPE_TAGGED_ENTRY, DemoTaggedEntryClass))
+
+typedef struct _DemoTaggedEntry       DemoTaggedEntry;
+typedef struct _DemoTaggedEntryClass  DemoTaggedEntryClass;
+
+struct _DemoTaggedEntry
+{
+  GtkWidget parent;
+};
+
+struct _DemoTaggedEntryClass
+{
+  GtkWidgetClass parent_class;
+};
+
+#define DEMO_TYPE_TAGGED_ENTRY_TAG                (demo_tagged_entry_tag_get_type ())
+#define DEMO_TAGGED_ENTRY_TAG(obj)                (G_TYPE_CHECK_INSTANCE_CAST ((obj), DEMO_TYPE_TAGGED_ENTRY_TAG, DemoTaggedEntryTag))
+#define DEMO_TAGGED_ENTRY_TAG_CLASS(klass)        (G_TYPE_CHECK_CLASS_CAST ((klass), DEMO_TYPE_TAGGED_ENTRY_TAG, DemoTaggedEntryTag))
+#define DEMO_IS_TAGGED_ENTRY_TAG(obj)             (G_TYPE_CHECK_INSTANCE_TYPE ((obj), DEMO_TYPE_TAGGED_ENTRY_TAG))
+#define DEMO_IS_TAGGED_ENTRY_TAG_CLASS(klass)     (G_TYPE_CHECK_CLASS_TYPE ((klass), DEMO_TYPE_TAGGED_ENTRY_TAG))
+#define DEMO_TAGGED_ENTRY_TAG_GET_CLASS(obj)      (G_TYPE_INSTANCE_GET_CLASS ((obj), DEMO_TYPE_TAGGED_ENTRY_TAG, DemoTaggedEntryTagClass))
+
+typedef struct _DemoTaggedEntryTag       DemoTaggedEntryTag;
+typedef struct _DemoTaggedEntryTagClass  DemoTaggedEntryTagClass;
+
+
+GType           demo_tagged_entry_get_type (void) G_GNUC_CONST;
+GType           demo_tagged_entry_tag_get_type (void) G_GNUC_CONST;
+
+GtkWidget *     demo_tagged_entry_new     (void);
+
+void            demo_tagged_entry_add_tag (DemoTaggedEntry *entry,
+                                           GtkWidget       *tag);
+
+void            demo_tagged_entry_insert_tag_after (DemoTaggedEntry *entry,
+                                                    GtkWidget       *tag,
+                                                    GtkWidget       *sibling);
+
+void            demo_tagged_entry_remove_tag (DemoTaggedEntry *entry,
+                                              GtkWidget       *tag);
+
+DemoTaggedEntryTag *
+                demo_tagged_entry_tag_new (const char *label);
+
+const char *    demo_tagged_entry_tag_get_label (DemoTaggedEntryTag *tag);
+
+void            demo_tagged_entry_tag_set_label (DemoTaggedEntryTag *tag,
+                                                 const char         *label);
+
+gboolean        demo_tagged_entry_tag_get_has_close_button (DemoTaggedEntryTag *tag);
+
+void            demo_tagged_entry_tag_set_has_close_button (DemoTaggedEntryTag *tag,
+                                                            gboolean            has_close_button);
+
+G_END_DECLS
+
+#endif /* __DEMO_TAGGED_ENTRY_H__ */

demos/gtk-demo/dialog.c

@@ -56,19 +56,20 @@ interactive_dialog_clicked (GtkButton *button,
   content_area = gtk_dialog_get_content_area (GTK_DIALOG (dialog));
 
   hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 8);
-  gtk_box_pack_start (GTK_BOX (content_area), hbox);
+  gtk_container_add (GTK_CONTAINER (content_area), hbox);
 
-  image = gtk_image_new_from_icon_name ("dialog-question", GTK_ICON_SIZE_DIALOG);
-  gtk_box_pack_start (GTK_BOX (hbox), image);
+  image = gtk_image_new_from_icon_name ("dialog-question");
+  gtk_image_set_icon_size (GTK_IMAGE (image), GTK_ICON_SIZE_LARGE);
+  gtk_container_add (GTK_CONTAINER (hbox), image);
 
   table = gtk_grid_new ();
   gtk_grid_set_row_spacing (GTK_GRID (table), 4);
   gtk_grid_set_column_spacing (GTK_GRID (table), 4);
-  gtk_box_pack_start (GTK_BOX (hbox), table);
+  gtk_container_add (GTK_CONTAINER (hbox), table);
   label = gtk_label_new_with_mnemonic ("_Entry 1");
   gtk_grid_attach (GTK_GRID (table), label, 0, 0, 1, 1);
   local_entry1 = gtk_entry_new ();
-  gtk_entry_set_text (GTK_ENTRY (local_entry1), gtk_entry_get_text (GTK_ENTRY (entry1)));
+  gtk_editable_set_text (GTK_EDITABLE (local_entry1), gtk_editable_get_text (GTK_EDITABLE (entry1)));
   gtk_grid_attach (GTK_GRID (table), local_entry1, 1, 0, 1, 1);
   gtk_label_set_mnemonic_widget (GTK_LABEL (label), local_entry1);
 
@@ -76,7 +77,7 @@ interactive_dialog_clicked (GtkButton *button,
   gtk_grid_attach (GTK_GRID (table), label, 0, 1, 1, 1);
 
   local_entry2 = gtk_entry_new ();
-  gtk_entry_set_text (GTK_ENTRY (local_entry2), gtk_entry_get_text (GTK_ENTRY (entry2)));
+  gtk_editable_set_text (GTK_EDITABLE (local_entry2), gtk_editable_get_text (GTK_EDITABLE (entry2)));
   gtk_grid_attach (GTK_GRID (table), local_entry2, 1, 1, 1, 1);
   gtk_label_set_mnemonic_widget (GTK_LABEL (label), local_entry2);
 
@@ -84,8 +85,8 @@ interactive_dialog_clicked (GtkButton *button,
 
   if (response == GTK_RESPONSE_OK)
     {
-      gtk_entry_set_text (GTK_ENTRY (entry1), gtk_entry_get_text (GTK_ENTRY (local_entry1)));
-      gtk_entry_set_text (GTK_ENTRY (entry2), gtk_entry_get_text (GTK_ENTRY (local_entry2)));
+      gtk_editable_set_text (GTK_EDITABLE (entry1), gtk_editable_get_text (GTK_EDITABLE (local_entry1)));
+      gtk_editable_set_text (GTK_EDITABLE (entry2), gtk_editable_get_text (GTK_EDITABLE (local_entry2)));
     }
 
   gtk_widget_destroy (dialog);
@@ -105,8 +106,8 @@ do_dialog (GtkWidget *do_widget)
   if (!window)
     {
       window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
-      gtk_window_set_screen (GTK_WINDOW (window),
-                             gtk_widget_get_screen (do_widget));
+      gtk_window_set_display (GTK_WINDOW (window),
+                              gtk_widget_get_display (do_widget));
       gtk_window_set_title (GTK_WINDOW (window), "Dialogs and Message Boxes");
 
       g_signal_connect (window, "destroy",
@@ -122,29 +123,29 @@ do_dialog (GtkWidget *do_widget)
 
       /* Standard message dialog */
       hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 8);
-      gtk_box_pack_start (GTK_BOX (vbox), hbox);
+      gtk_container_add (GTK_CONTAINER (vbox), hbox);
       button = gtk_button_new_with_mnemonic ("_Message Dialog");
       g_signal_connect (button, "clicked",
                         G_CALLBACK (message_dialog_clicked), NULL);
-      gtk_box_pack_start (GTK_BOX (hbox), button);
+      gtk_container_add (GTK_CONTAINER (hbox), button);
 
-      gtk_box_pack_start (GTK_BOX (vbox), gtk_separator_new (GTK_ORIENTATION_HORIZONTAL));
+      gtk_container_add (GTK_CONTAINER (vbox), gtk_separator_new (GTK_ORIENTATION_HORIZONTAL));
 
       /* Interactive dialog*/
       hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 8);
-      gtk_box_pack_start (GTK_BOX (vbox), hbox);
+      gtk_container_add (GTK_CONTAINER (vbox), hbox);
       vbox2 = gtk_box_new (GTK_ORIENTATION_VERTICAL, 0);
 
       button = gtk_button_new_with_mnemonic ("_Interactive Dialog");
       g_signal_connect (button, "clicked",
                         G_CALLBACK (interactive_dialog_clicked), NULL);
-      gtk_box_pack_start (GTK_BOX (hbox), vbox2);
-      gtk_box_pack_start (GTK_BOX (vbox2), button);
+      gtk_container_add (GTK_CONTAINER (hbox), vbox2);
+      gtk_container_add (GTK_CONTAINER (vbox2), button);
 
       table = gtk_grid_new ();
       gtk_grid_set_row_spacing (GTK_GRID (table), 4);
       gtk_grid_set_column_spacing (GTK_GRID (table), 4);
-      gtk_box_pack_start (GTK_BOX (hbox), table);
+      gtk_container_add (GTK_CONTAINER (hbox), table);
 
       label = gtk_label_new_with_mnemonic ("_Entry 1");
       gtk_grid_attach (GTK_GRID (table), label, 0, 0, 1, 1);

demos/gtk-demo/dnd.c

@@ -0,0 +1,378 @@
+/* Drag-and-Drop
+ *
+ * I can't believe its not glade!
+ */
+
+#include <glib/gi18n.h>
+#include <gtk/gtk.h>
+#include <string.h>
+
+typedef struct _GtkDemoWidget GtkDemoWidget;
+struct _GtkDemoWidget
+{
+  GType type;
+  union {
+    char *text;
+    gboolean active;
+  };
+};
+
+static gpointer
+copy_demo_widget (gpointer data)
+{
+  GtkDemoWidget *demo = g_memdup (data, sizeof (GtkDemoWidget));
+
+  if (demo->type == GTK_TYPE_LABEL)
+    demo->text = g_strdup (demo->text);
+
+  return demo;
+}
+
+static void
+free_demo_widget (gpointer data)
+{
+  GtkDemoWidget *demo = data;
+
+  if (demo->type == GTK_TYPE_LABEL)
+    g_free (demo->text);
+
+  g_free (demo);
+}
+
+#define GTK_TYPE_DEMO_WIDGET (gtk_demo_widget_get_type ())
+
+G_DEFINE_BOXED_TYPE (GtkDemoWidget, gtk_demo_widget, copy_demo_widget, free_demo_widget)
+
+static GtkDemoWidget *
+serialize_widget (GtkWidget *widget)
+{
+  GtkDemoWidget *demo;
+
+  demo = g_new0 (GtkDemoWidget, 1);
+  demo->type = G_OBJECT_TYPE (widget);
+
+  if (GTK_IS_LABEL (widget))
+    {
+      demo->text = g_strdup (gtk_label_get_text (GTK_LABEL (widget)));
+    }
+  else if (GTK_IS_SPINNER (widget))
+    {
+      g_object_get (widget, "active", &demo->active, NULL);
+    }
+  else
+    {
+      g_print ("Type %s not supported\n", g_type_name (demo->type));
+    }
+
+  return demo;
+}
+
+static GtkWidget *
+deserialize_widget (GtkDemoWidget *demo)
+{
+  GtkWidget *widget = NULL;
+
+  if (demo->type == GTK_TYPE_LABEL)
+    {
+      widget = gtk_label_new (demo->text);
+    }
+  else if (demo->type == GTK_TYPE_SPINNER)
+    {
+      widget = g_object_new (demo->type, "active", demo->active, NULL);
+      gtk_style_context_add_class (gtk_widget_get_style_context (widget), "demo");
+    }
+  else
+    {
+      g_print ("Type %s not supported\n", g_type_name (demo->type));
+    }
+
+  return widget;
+}
+
+static double pos_x, pos_y;
+
+static void
+new_label_cb (GtkMenuItem *item,
+              gpointer     data)
+{
+  GtkFixed *fixed = data;
+  GtkWidget *widget;
+
+  widget = gtk_label_new ("Label");
+  gtk_fixed_put (fixed, widget, pos_x, pos_y);
+}
+
+static void
+new_spinner_cb (GtkMenuItem *item,
+                gpointer     data)
+{
+  GtkFixed *fixed = data;
+  GtkWidget *widget;
+
+  widget = gtk_spinner_new ();
+  gtk_style_context_add_class (gtk_widget_get_style_context (widget), "demo");
+  gtk_spinner_start (GTK_SPINNER (widget));
+  gtk_fixed_put (fixed, widget, pos_x, pos_y);
+}
+
+static void
+copy_cb (GtkWidget *child)
+{
+  GdkClipboard *clipboard;
+  GtkDemoWidget *demo;
+
+  g_print ("Copy %s\n", G_OBJECT_TYPE_NAME (child));
+
+  demo = serialize_widget (child);
+
+  clipboard = gdk_display_get_clipboard (gdk_display_get_default ());
+  gdk_clipboard_set (clipboard, GTK_TYPE_DEMO_WIDGET, demo);
+}
+
+static void
+delete_cb (GtkWidget *child)
+{
+  gtk_widget_destroy (child);
+}
+
+static void
+cut_cb (GtkWidget *child)
+{
+  copy_cb (child);
+  delete_cb (child);
+}
+
+static void
+value_read (GObject      *source,
+            GAsyncResult *res,
+            gpointer      data)
+{
+  GdkClipboard *clipboard = GDK_CLIPBOARD (source);
+  GError *error = NULL;
+  const GValue *value;
+  GtkDemoWidget *demo;
+  GtkWidget *widget = NULL;
+
+  value = gdk_clipboard_read_value_finish (clipboard, res, &error);
+
+  if (value == NULL)
+    {
+      g_print ("error: %s\n", error->message);
+      g_error_free (error);
+      return;
+    }
+
+  if (!G_VALUE_HOLDS (value, GTK_TYPE_DEMO_WIDGET))
+    {
+      g_print ("can't handle clipboard contents\n");
+      return;
+    }
+
+  demo = g_value_get_boxed (value);
+  widget = deserialize_widget (demo);
+
+  gtk_fixed_put (GTK_FIXED (data), widget, pos_x, pos_y);
+}
+
+static void
+paste_cb (GtkWidget *fixed)
+{
+  GdkClipboard *clipboard;
+
+  clipboard = gdk_display_get_clipboard (gdk_display_get_default ());
+  if (gdk_content_formats_contain_gtype (gdk_clipboard_get_formats (clipboard), GTK_TYPE_DEMO_WIDGET))
+    {
+      g_print ("Paste %s\n", g_type_name (GTK_TYPE_DEMO_WIDGET));
+      gdk_clipboard_read_value_async (clipboard, GTK_TYPE_DEMO_WIDGET, 0, NULL, value_read, fixed);
+    }
+  else
+    g_print ("Don't know how to handle clipboard contents\n");
+}
+
+static void
+edit_label_done (GtkWidget *entry, gpointer data)
+{
+  GtkWidget *fixed = gtk_widget_get_parent (entry);
+  GtkWidget *label;
+  int x, y;
+
+  gtk_fixed_get_child_position (GTK_FIXED (fixed), entry, &x, &y);
+
+  label = GTK_WIDGET (g_object_get_data (G_OBJECT (entry), "label"));
+  gtk_label_set_text (GTK_LABEL (label), gtk_editable_get_text (GTK_EDITABLE (entry)));
+
+  gtk_widget_destroy (entry);
+}
+
+static void
+edit_cb (GtkWidget *child)
+{
+  GtkWidget *fixed = gtk_widget_get_parent (child);
+  int x, y;
+
+  gtk_fixed_get_child_position (GTK_FIXED (fixed), child, &x, &y);
+
+  if (GTK_IS_LABEL (child))
+    {
+      GtkWidget *entry = gtk_entry_new ();
+
+      g_object_set_data (G_OBJECT (entry), "label", child);
+
+      gtk_editable_set_text (GTK_EDITABLE (entry), gtk_label_get_text (GTK_LABEL (child)));
+      g_signal_connect (entry, "activate", G_CALLBACK (edit_label_done), NULL);
+      gtk_fixed_put (GTK_FIXED (fixed), entry, x, y);
+      gtk_widget_grab_focus (entry);
+    }
+  else if (GTK_IS_SPINNER (child))
+    {
+      gboolean active;
+
+      g_object_get (child, "active", &active, NULL);
+      g_object_set (child, "active", !active, NULL);
+    }
+}
+
+static void
+pressed_cb (GtkGesture *gesture,
+            int         n_press,
+            double      x,
+            double      y,
+            gpointer    data)
+{
+  GtkWidget *widget;
+  GtkWidget *child;
+
+  widget = gtk_event_controller_get_widget (GTK_EVENT_CONTROLLER (gesture));
+  child = gtk_widget_pick (widget, x, y, GTK_PICK_DEFAULT);
+
+  if (gtk_gesture_single_get_current_button (GTK_GESTURE_SINGLE (gesture)) == GDK_BUTTON_SECONDARY)
+    {
+      GdkRectangle rect;
+      GtkWidget *menu;
+      GtkWidget *item;
+      GdkClipboard *clipboard;
+
+      pos_x = x;
+      pos_y = y;
+
+      menu = gtk_menu_new ();
+      item = gtk_menu_item_new_with_label ("New Label");
+      g_signal_connect (item, "activate", G_CALLBACK (new_label_cb), widget);
+      gtk_container_add (GTK_CONTAINER (menu), item);
+      item = gtk_menu_item_new_with_label ("New Spinner");
+      g_signal_connect (item, "activate", G_CALLBACK (new_spinner_cb), widget);
+      gtk_container_add (GTK_CONTAINER (menu), item);
+
+      item = gtk_separator_menu_item_new ();
+      gtk_container_add (GTK_CONTAINER (menu), item);
+
+      item = gtk_menu_item_new_with_label ("Edit");
+      gtk_widget_set_sensitive (item, child != NULL && child != widget);
+      g_signal_connect_swapped (item, "activate", G_CALLBACK (edit_cb), child);
+      gtk_container_add (GTK_CONTAINER (menu), item);
+
+      item = gtk_separator_menu_item_new ();
+      gtk_container_add (GTK_CONTAINER (menu), item);
+
+      item = gtk_menu_item_new_with_label ("Cut");
+      gtk_widget_set_sensitive (item, child != NULL && child != widget);
+      g_signal_connect_swapped (item, "activate", G_CALLBACK (cut_cb), child);
+      gtk_container_add (GTK_CONTAINER (menu), item);
+      item = gtk_menu_item_new_with_label ("Copy");
+      gtk_widget_set_sensitive (item, child != NULL && child != widget);
+      g_signal_connect_swapped (item, "activate", G_CALLBACK (copy_cb), child);
+      gtk_container_add (GTK_CONTAINER (menu), item);
+      item = gtk_menu_item_new_with_label ("Paste");
+      clipboard = gdk_display_get_clipboard (gdk_display_get_default ());
+      gtk_widget_set_sensitive (item,
+                                gdk_content_formats_contain_gtype (gdk_clipboard_get_formats (clipboard), GTK_TYPE_DEMO_WIDGET));
+      g_signal_connect_swapped (item, "activate", G_CALLBACK (paste_cb), widget);
+      gtk_container_add (GTK_CONTAINER (menu), item);
+      item = gtk_menu_item_new_with_label ("Delete");
+      gtk_widget_set_sensitive (item, child != NULL && child != widget);
+      g_signal_connect_swapped (item, "activate", G_CALLBACK (delete_cb), child);
+      gtk_container_add (GTK_CONTAINER (menu), item);
+
+      rect.x = x;
+      rect.y = y;
+      rect.width = 0;
+      rect.height = 0;
+
+      gtk_menu_popup_at_rect (GTK_MENU (menu),
+                              gtk_widget_get_surface (widget),
+                              &rect,
+                              GDK_GRAVITY_NORTH_WEST,
+                              GDK_GRAVITY_NORTH_WEST,
+                              NULL);
+
+      return;
+    }
+}
+
+static void
+released_cb (GtkGesture *gesture,
+             int         n_press,
+             double      x,
+             double      y,
+             gpointer    data)
+{
+  GtkWidget *widget;
+  GtkWidget *child;
+
+  widget = gtk_event_controller_get_widget (GTK_EVENT_CONTROLLER (gesture));
+  child = gtk_widget_pick (widget, x, y, 0);
+
+  if (gtk_gesture_single_get_current_button (GTK_GESTURE_SINGLE (gesture)) == GDK_BUTTON_PRIMARY)
+    {
+      if (child != NULL && child != widget)
+        edit_cb (child);
+    }
+}
+
+static GtkWidget *window = NULL;
+
+GtkWidget *
+do_dnd (GtkWidget *do_widget)
+{
+  if (!window)
+    {
+      GtkWidget *vbox, *fixed;
+      GtkGesture *multipress;
+      GtkCssProvider *provider;
+
+      window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
+      gtk_window_set_display (GTK_WINDOW (window),
+                              gtk_widget_get_display (do_widget));
+      gtk_window_set_title (GTK_WINDOW (window), "Drag-and-drop");
+
+      g_signal_connect (window, "destroy",
+                        G_CALLBACK (gtk_widget_destroyed), &window);
+
+      vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 0);
+      gtk_container_add (GTK_CONTAINER (window), vbox);
+
+      fixed = gtk_fixed_new ();
+      gtk_container_add (GTK_CONTAINER (vbox), fixed);
+      gtk_widget_set_hexpand (fixed, TRUE);
+      gtk_widget_set_vexpand (fixed, TRUE);
+
+      multipress = gtk_gesture_multi_press_new ();
+      gtk_gesture_single_set_button (GTK_GESTURE_SINGLE (multipress), 0);
+      g_signal_connect (multipress, "pressed", G_CALLBACK (pressed_cb), NULL);
+      g_signal_connect (multipress, "released", G_CALLBACK (released_cb), NULL);
+      gtk_widget_add_controller (fixed, GTK_EVENT_CONTROLLER (multipress));
+
+      provider = gtk_css_provider_new ();
+      gtk_css_provider_load_from_resource (provider, "/dnd/dnd.css");
+      gtk_style_context_add_provider_for_display (gdk_display_get_default (),
+                                                  GTK_STYLE_PROVIDER (provider),
+                                                  800);
+    }
+
+  if (!gtk_widget_get_visible (window))
+    gtk_widget_show (window);
+  else
+    gtk_widget_destroy (window);
+
+  return window;
+}

demos/gtk-demo/dnd.css

@@ -0,0 +1,3 @@
+spinner.demo {
+  opacity: 1;
+}

demos/gtk-demo/drawingarea.c

@@ -4,8 +4,8 @@
  * of various kinds.
  *
  * This demo has two drawing areas. The checkerboard area shows
- * how you can just draw something; all you have to do is write
- * a signal handler for expose_event, as shown here.
+ * how you can just draw something; all you have to do is set a function
+ * via gtk_drawing_area_set_draw_func(), as shown here.
  *
  * The "scribble" area is a bit more advanced, and shows how to handle
  * events such as button presses and mouse motion. Click the mouse
@@ -23,16 +23,14 @@ static cairo_surface_t *surface = NULL;
 static void
 create_surface (GtkWidget *widget)
 {
-  GtkAllocation allocation;
   cairo_t *cr;
 
   if (surface)
     cairo_surface_destroy (surface);
 
-  gtk_widget_get_allocation (widget, &allocation);
   surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32,
-                                        allocation.width,
-                                        allocation.height);
+                                        gtk_widget_get_width (widget),
+                                        gtk_widget_get_height (widget));
 
   /* Initialize the surface to white */
   cr = cairo_create (surface);
@@ -71,8 +69,8 @@ draw_brush (GtkWidget *widget,
   cairo_t *cr;
 
   if (surface == NULL ||
-      cairo_image_surface_get_width (surface) != gtk_widget_get_allocated_width (widget) ||
-      cairo_image_surface_get_height (surface) != gtk_widget_get_allocated_height (widget))
+      cairo_image_surface_get_width (surface) != gtk_widget_get_width (widget) ||
+      cairo_image_surface_get_height (surface) != gtk_widget_get_height (widget))
     create_surface (widget);
 
   update_rect.x = x - 3;
@@ -88,45 +86,41 @@ draw_brush (GtkWidget *widget,
 
   cairo_destroy (cr);
 
-  gtk_widget_queue_draw_area (widget, update_rect.x, update_rect.y, update_rect.width, update_rect.height);
+  gtk_widget_queue_draw (widget);
 }
 
-static gboolean
-scribble_button_press_event (GtkWidget      *widget,
-                             GdkEventButton *event,
-                             gpointer        data)
+static double start_x;
+static double start_y;
+
+static void
+drag_begin (GtkGestureDrag *gesture,
+            double          x,
+            double          y,
+            GtkWidget      *area)
 {
-  double x, y;
-  guint button;
+  start_x = x;
+  start_y = y;
 
-  gdk_event_get_button ((GdkEvent *)event, &button);
-  gdk_event_get_coords ((GdkEvent *)event, &x, &y);
-
-  if (button == GDK_BUTTON_PRIMARY)
-    draw_brush (widget, x, y);
-
-  /* We've handled the event, stop processing */
-  return TRUE;
+  draw_brush (area, x, y);
 }
 
-static gboolean
-scribble_motion_notify_event (GtkWidget      *widget,
-                              GdkEventMotion *event,
-                              gpointer        data)
+static void
+drag_update (GtkGestureDrag *gesture,
+             double          x,
+             double          y,
+             GtkWidget      *area)
 {
-  double x, y;
-  GdkModifierType state;
-
-  gdk_event_get_state ((GdkEvent *)event, &state);
-  gdk_event_get_coords ((GdkEvent *)event, &x, &y);
-
-  if (state & GDK_BUTTON1_MASK)
-    draw_brush (widget, x, y);
-
-  /* We've handled it, stop processing */
-  return TRUE;
+  draw_brush (area, start_x + x, start_y + y);
 }
 
+static void
+drag_end (GtkGestureDrag *gesture,
+          double          x,
+          double          y,
+          GtkWidget      *area)
+{
+  draw_brush (area, start_x + x, start_y + y);
+}
 
 static void
 checkerboard_draw (GtkDrawingArea *da,
@@ -143,7 +137,7 @@ checkerboard_draw (GtkDrawingArea *da,
   /* At the start of a draw handler, a clip region has been set on
    * the Cairo context, and the contents have been cleared to the
    * widget's background color. The docs for
-   * gdk_window_begin_paint_region() give more details on how this
+   * gdk_surface_begin_paint_region() give more details on how this
    * works.
    */
 
@@ -191,12 +185,13 @@ do_drawingarea (GtkWidget *do_widget)
   GtkWidget *vbox;
   GtkWidget *da;
   GtkWidget *label;
+  GtkGesture *drag;
 
   if (!window)
     {
       window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
-      gtk_window_set_screen (GTK_WINDOW (window),
-                             gtk_widget_get_screen (do_widget));
+      gtk_window_set_display (GTK_WINDOW (window),
+                              gtk_widget_get_display (do_widget));
       gtk_window_set_title (GTK_WINDOW (window), "Drawing Area");
 
       g_signal_connect (window, "destroy",
@@ -213,12 +208,12 @@ do_drawingarea (GtkWidget *do_widget)
       label = gtk_label_new (NULL);
       gtk_label_set_markup (GTK_LABEL (label),
                             "<u>Checkerboard pattern</u>");
-      gtk_box_pack_start (GTK_BOX (vbox), label);
+      gtk_container_add (GTK_CONTAINER (vbox), label);
 
       frame = gtk_frame_new (NULL);
       gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_IN);
       gtk_widget_set_vexpand (frame, TRUE);
-      gtk_box_pack_start (GTK_BOX (vbox), frame);
+      gtk_container_add (GTK_CONTAINER (vbox), frame);
 
       da = gtk_drawing_area_new ();
       gtk_drawing_area_set_content_width (GTK_DRAWING_AREA (da), 100);
@@ -233,12 +228,12 @@ do_drawingarea (GtkWidget *do_widget)
       label = gtk_label_new (NULL);
       gtk_label_set_markup (GTK_LABEL (label),
                             "<u>Scribble area</u>");
-      gtk_box_pack_start (GTK_BOX (vbox), label);
+      gtk_container_add (GTK_CONTAINER (vbox), label);
 
       frame = gtk_frame_new (NULL);
       gtk_widget_set_vexpand (frame, TRUE);
       gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_IN);
-      gtk_box_pack_start (GTK_BOX (vbox), frame);
+      gtk_container_add (GTK_CONTAINER (vbox), frame);
 
       da = gtk_drawing_area_new ();
       gtk_drawing_area_set_content_width (GTK_DRAWING_AREA (da), 100);
@@ -249,11 +244,14 @@ do_drawingarea (GtkWidget *do_widget)
       g_signal_connect (da, "size-allocate",
                         G_CALLBACK (scribble_size_allocate), NULL);
 
-      /* Event signals */
-      g_signal_connect (da, "motion-notify-event",
-                        G_CALLBACK (scribble_motion_notify_event), NULL);
-      g_signal_connect (da, "button-press-event",
-                        G_CALLBACK (scribble_button_press_event), NULL);
+      drag = gtk_gesture_drag_new ();
+      gtk_gesture_single_set_button (GTK_GESTURE_SINGLE (drag), GDK_BUTTON_PRIMARY);
+      gtk_widget_add_controller (da, GTK_EVENT_CONTROLLER (drag));
+
+      g_signal_connect (drag, "drag-begin", G_CALLBACK (drag_begin), da);
+      g_signal_connect (drag, "drag-update", G_CALLBACK (drag_update), da);
+      g_signal_connect (drag, "drag-end", G_CALLBACK (drag_end), da);
+
     }
 
   if (!gtk_widget_get_visible (window))

demos/gtk-demo/editable_cells.c

@@ -346,8 +346,8 @@ do_editable_cells (GtkWidget *do_widget)
       GtkTreeModel *numbers_model;
 
       window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
-      gtk_window_set_screen (GTK_WINDOW (window),
-                             gtk_widget_get_screen (do_widget));
+      gtk_window_set_display (GTK_WINDOW (window),
+                              gtk_widget_get_display (do_widget));
       gtk_window_set_title (GTK_WINDOW (window), "Editable Cells");
       g_signal_connect (window, "destroy",
                         G_CALLBACK (gtk_widget_destroyed), &window);
@@ -356,7 +356,7 @@ do_editable_cells (GtkWidget *do_widget)
       g_object_set (vbox, "margin", 5, NULL);
       gtk_container_add (GTK_CONTAINER (window), vbox);
 
-      gtk_box_pack_start (GTK_BOX (vbox),
+      gtk_container_add (GTK_CONTAINER (vbox),
                           gtk_label_new ("Shopping list (you can edit the cells!)"));
 
       sw = gtk_scrolled_window_new (NULL, NULL);
@@ -365,7 +365,7 @@ do_editable_cells (GtkWidget *do_widget)
       gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (sw),
                                       GTK_POLICY_AUTOMATIC,
                                       GTK_POLICY_AUTOMATIC);
-      gtk_box_pack_start (GTK_BOX (vbox), sw);
+      gtk_container_add (GTK_CONTAINER (vbox), sw);
 
       /* create models */
       items_model = create_items_model ();
@@ -387,17 +387,17 @@ do_editable_cells (GtkWidget *do_widget)
       /* some buttons */
       hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 4);
       gtk_box_set_homogeneous (GTK_BOX (hbox), TRUE);
-      gtk_box_pack_start (GTK_BOX (vbox), hbox);
+      gtk_container_add (GTK_CONTAINER (vbox), hbox);
 
       button = gtk_button_new_with_label ("Add item");
       g_signal_connect (button, "clicked",
                         G_CALLBACK (add_item), treeview);
-      gtk_box_pack_start (GTK_BOX (hbox), button);
+      gtk_container_add (GTK_CONTAINER (hbox), button);
 
       button = gtk_button_new_with_label ("Remove item");
       g_signal_connect (button, "clicked",
                         G_CALLBACK (remove_item), treeview);
-      gtk_box_pack_start (GTK_BOX (hbox), button);
+      gtk_container_add (GTK_CONTAINER (hbox), button);
 
       gtk_window_set_default_size (GTK_WINDOW (window), 320, 200);
     }

demos/gtk-demo/entry_buffer.c

@@ -20,8 +20,8 @@ do_entry_buffer (GtkWidget *do_widget)
   if (!window)
     {
       window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
-      gtk_window_set_screen (GTK_WINDOW (window),
-                             gtk_widget_get_screen (do_widget));
+      gtk_window_set_display (GTK_WINDOW (window),
+                              gtk_widget_get_display (do_widget));
       gtk_window_set_title (GTK_WINDOW (window), "Entry Buffer");
       gtk_window_set_resizable (GTK_WINDOW (window), FALSE);
       g_signal_connect (window, "destroy",
@@ -34,19 +34,19 @@ do_entry_buffer (GtkWidget *do_widget)
       label = gtk_label_new (NULL);
       gtk_label_set_markup (GTK_LABEL (label),
                             "Entries share a buffer. Typing in one is reflected in the other.");
-      gtk_box_pack_start (GTK_BOX (vbox), label);
+      gtk_container_add (GTK_CONTAINER (vbox), label);
 
       /* Create a buffer */
       buffer = gtk_entry_buffer_new (NULL, 0);
 
       /* Create our first entry */
       entry = gtk_entry_new_with_buffer (buffer);
-      gtk_box_pack_start (GTK_BOX (vbox), entry);
+      gtk_container_add (GTK_CONTAINER (vbox), entry);
 
       /* Create the second entry */
       entry = gtk_entry_new_with_buffer (buffer);
       gtk_entry_set_visibility (GTK_ENTRY (entry), FALSE);
-      gtk_box_pack_start (GTK_BOX (vbox), entry);
+      gtk_container_add (GTK_CONTAINER (vbox), entry);
 
       g_object_unref (buffer);
     }

demos/gtk-demo/entry_completion.c

@@ -46,8 +46,8 @@ do_entry_completion (GtkWidget *do_widget)
   if (!window)
     {
       window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
-      gtk_window_set_screen (GTK_WINDOW (window),
-                             gtk_widget_get_screen (do_widget));
+      gtk_window_set_display (GTK_WINDOW (window),
+                              gtk_widget_get_display (do_widget));
       gtk_window_set_title (GTK_WINDOW (window), "Entry Completion");
       gtk_window_set_resizable (GTK_WINDOW (window), FALSE);
 
@@ -60,11 +60,11 @@ do_entry_completion (GtkWidget *do_widget)
 
       label = gtk_label_new (NULL);
       gtk_label_set_markup (GTK_LABEL (label), "Completion demo, try writing <b>total</b> or <b>gnome</b> for example.");
-      gtk_box_pack_start (GTK_BOX (vbox), label);
+      gtk_container_add (GTK_CONTAINER (vbox), label);
 
       /* Create our entry */
       entry = gtk_entry_new ();
-      gtk_box_pack_start (GTK_BOX (vbox), entry);
+      gtk_container_add (GTK_CONTAINER (vbox), entry);
 
       /* Create the completion object */
       completion = gtk_entry_completion_new ();

demos/gtk-demo/event_axes.c

@@ -1,668 +0,0 @@
-/* Touch and Drawing Tablets
- *
- * Demonstrates advanced handling of event information from exotic
- * input devices.
- *
- * On one hand, this snippet demonstrates management of drawing tablets,
- * those contain additional information for the pointer other than
- * X/Y coordinates. Tablet pads events are mapped to actions, which
- * are both defined and interpreted by the application.
- *
- * Input axes are dependent on hardware devices, on linux/unix you
- * can see the device axes through xinput list <device>. Each time
- * a different hardware device is used to move the pointer, the
- * master device will be updated to match the axes it provides,
- * these changes can be tracked through GdkDevice::changed, or
- * checking gdk_event_get_source_device().
- *
- * On the other hand, this demo handles basic multitouch events,
- * each event coming from an specific touchpoint will contain a
- * GdkEventSequence that's unique for its lifetime, so multiple
- * touchpoints can be tracked.
- */
-
-#include <glib/gi18n.h>
-#include <gtk/gtk.h>
-
-typedef struct {
-  GdkDevice *last_source;
-  GdkDeviceTool *last_tool;
-  gdouble *axes;
-  GdkRGBA color;
-  gdouble x;
-  gdouble y;
-} AxesInfo;
-
-typedef struct {
-  GHashTable *pointer_info; /* GdkDevice -> AxesInfo */
-  GHashTable *touch_info; /* GdkEventSequence -> AxesInfo */
-} EventData;
-
-const gchar *colors[] = {
-  "black",
-  "orchid",
-  "fuchsia",
-  "indigo",
-  "thistle",
-  "sienna",
-  "azure",
-  "plum",
-  "lime",
-  "navy",
-  "maroon",
-  "burlywood"
-};
-
-static GtkPadActionEntry pad_actions[] = {
-  { GTK_PAD_ACTION_BUTTON, 1, -1, N_("Nuclear strike"), "pad.nuke" },
-  { GTK_PAD_ACTION_BUTTON, 2, -1, N_("Release siberian methane reserves"), "pad.heat" },
-  { GTK_PAD_ACTION_BUTTON, 3, -1, N_("Release solar flare"), "pad.fry" },
-  { GTK_PAD_ACTION_BUTTON, 4, -1, N_("De-stabilize Oort cloud"), "pad.fall" },
-  { GTK_PAD_ACTION_BUTTON, 5, -1, N_("Ignite WR-104"), "pad.burst" },
-  { GTK_PAD_ACTION_BUTTON, 6, -1, N_("Lart whoever asks about this button"), "pad.lart" },
-  { GTK_PAD_ACTION_RING, -1, -1, N_("Earth axial tilt"), "pad.tilt" },
-  { GTK_PAD_ACTION_STRIP, -1, -1, N_("Extent of weak nuclear force"), "pad.dissolve" },
-};
-
-static const gchar *pad_action_results[] = {
-  "☢",
-  "♨",
-  "☼",
-  "☄",
-  "⚡",
-  "💫",
-  "◑",
-  "⚛"
-};
-
-static guint cur_color = 0;
-static guint pad_action_timeout_id = 0;
-
-static AxesInfo *
-axes_info_new (void)
-{
-  AxesInfo *info;
-
-  info = g_new0 (AxesInfo, 1);
-  gdk_rgba_parse (&info->color, colors[cur_color]);
-
-  cur_color = (cur_color + 1) % G_N_ELEMENTS (colors);
-
-  return info;
-}
-
-static EventData *
-event_data_new (void)
-{
-  EventData *data;
-
-  data = g_new0 (EventData, 1);
-  data->pointer_info = g_hash_table_new_full (NULL, NULL, NULL,
-                                              (GDestroyNotify) g_free);
-  data->touch_info = g_hash_table_new_full (NULL, NULL, NULL,
-                                            (GDestroyNotify) g_free);
-
-  return data;
-}
-
-static void
-event_data_free (EventData *data)
-{
-  g_hash_table_destroy (data->pointer_info);
-  g_hash_table_destroy (data->touch_info);
-  g_free (data);
-}
-
-static void
-update_axes_from_event (GdkEvent  *event,
-                        EventData *data)
-{
-  GdkDevice *device, *source_device;
-  GdkEventSequence *sequence;
-  GdkDeviceTool *tool;
-  GdkEventType type;
-  gdouble x, y;
-  AxesInfo *info;
-
-  device = gdk_event_get_device (event);
-  source_device = gdk_event_get_source_device (event);
-  sequence = gdk_event_get_event_sequence (event);
-  tool = gdk_event_get_device_tool (event);
-  type = gdk_event_get_event_type (event);
-
-  if (type == GDK_TOUCH_END ||
-      type == GDK_TOUCH_CANCEL)
-    {
-      g_hash_table_remove (data->touch_info, sequence);
-      return;
-    }
-  else if (type == GDK_LEAVE_NOTIFY)
-    {
-      g_hash_table_remove (data->pointer_info, device);
-      return;
-    }
-
-  if (!source_device)
-    return;
-
-  if (!sequence)
-    {
-      info = g_hash_table_lookup (data->pointer_info, device);
-
-      if (!info)
-        {
-          info = axes_info_new ();
-          g_hash_table_insert (data->pointer_info, device, info);
-        }
-    }
-  else
-    {
-      info = g_hash_table_lookup (data->touch_info, sequence);
-
-      if (!info)
-        {
-          info = axes_info_new ();
-          g_hash_table_insert (data->touch_info, sequence, info);
-        }
-    }
-
-  if (info->last_source != source_device)
-    info->last_source = source_device;
-
-  if (info->last_tool != tool)
-    info->last_tool = tool;
-
-  g_clear_pointer (&info->axes, g_free);
-
-  if (type == GDK_TOUCH_BEGIN ||
-      type == GDK_TOUCH_UPDATE)
-    {
-      gboolean emulating_pointer;
-
-      gdk_event_get_touch_emulating_pointer (event, &emulating_pointer);
-      if (sequence && emulating_pointer)
-        g_hash_table_remove (data->pointer_info, device);
-    }
-  if (type == GDK_MOTION_NOTIFY ||
-      type == GDK_BUTTON_PRESS ||
-      type == GDK_BUTTON_RELEASE)
-    {
-      gdouble *axes;
-      guint n_axes;
-
-      gdk_event_get_axes (event, &axes, &n_axes);
-      info->axes = g_memdup (axes, sizeof (double) * n_axes);
-    }
-
-  if (gdk_event_get_coords (event, &x, &y))
-    {
-      info->x = x;
-      info->y = y;
-    }
-}
-
-static gboolean
-event_cb (GtkWidget *widget,
-          GdkEvent  *event,
-          gpointer   user_data)
-{
-  update_axes_from_event (event, user_data);
-  gtk_widget_queue_draw (widget);
-  return FALSE;
-}
-
-static void
-render_arrow (cairo_t     *cr,
-              gdouble      x_diff,
-              gdouble      y_diff,
-              const gchar *label)
-{
-  cairo_save (cr);
-
-  cairo_set_source_rgb (cr, 0, 0, 0);
-  cairo_new_path (cr);
-  cairo_move_to (cr, 0, 0);
-  cairo_line_to (cr, x_diff, y_diff);
-  cairo_stroke (cr);
-
-  cairo_move_to (cr, x_diff, y_diff);
-  cairo_show_text (cr, label);
-
-  cairo_restore (cr);
-}
-
-static void
-draw_axes_info (cairo_t       *cr,
-                AxesInfo      *info,
-                int            width,
-                int            height)
-{
-  gdouble pressure, tilt_x, tilt_y, distance, wheel, rotation, slider;
-  GdkAxisFlags axes = gdk_device_get_axes (info->last_source);
-
-  cairo_save (cr);
-
-  cairo_set_line_width (cr, 1);
-  gdk_cairo_set_source_rgba (cr, &info->color);
-
-  cairo_move_to (cr, 0, info->y);
-  cairo_line_to (cr, width, info->y);
-  cairo_move_to (cr, info->x, 0);
-  cairo_line_to (cr, info->x, height);
-  cairo_stroke (cr);
-
-  cairo_translate (cr, info->x, info->y);
-
-  if (!info->axes)
-    {
-      cairo_restore (cr);
-      return;
-    }
-
-  if (axes & GDK_AXIS_FLAG_PRESSURE)
-    {
-      cairo_pattern_t *pattern;
-
-      gdk_device_get_axis (info->last_source, info->axes, GDK_AXIS_PRESSURE,
-                           &pressure);
-
-      pattern = cairo_pattern_create_radial (0, 0, 0, 0, 0, 100);
-      cairo_pattern_add_color_stop_rgba (pattern, pressure, 1, 0, 0, pressure);
-      cairo_pattern_add_color_stop_rgba (pattern, 1, 0, 0, 1, 0);
-
-      cairo_set_source (cr, pattern);
-
-      cairo_arc (cr, 0, 0, 100, 0, 2 * G_PI);
-      cairo_fill (cr);
-
-      cairo_pattern_destroy (pattern);
-    }
-
-  if (axes & GDK_AXIS_FLAG_XTILT &&
-      axes & GDK_AXIS_FLAG_YTILT)
-    {
-      gdk_device_get_axis (info->last_source, info->axes, GDK_AXIS_XTILT,
-                           &tilt_x);
-      gdk_device_get_axis (info->last_source, info->axes, GDK_AXIS_YTILT,
-                           &tilt_y);
-
-      render_arrow (cr, tilt_x * 100, tilt_y * 100, "Tilt");
-    }
-
-  if (axes & GDK_AXIS_FLAG_DISTANCE)
-    {
-      double dashes[] = { 5.0, 5.0 };
-      cairo_text_extents_t extents;
-
-      gdk_device_get_axis (info->last_source, info->axes, GDK_AXIS_DISTANCE,
-                           &distance);
-
-      cairo_save (cr);
-
-      cairo_move_to (cr, distance * 100, 0);
-
-      cairo_set_source_rgb (cr, 0.0, 0.0, 0.0);
-      cairo_set_dash (cr, dashes, 2, 0.0);
-      cairo_arc (cr, 0, 0, distance * 100, 0, 2 * G_PI);
-      cairo_stroke (cr);
-
-      cairo_move_to (cr, 0, -distance * 100);
-      cairo_text_extents (cr, "Distance", &extents);
-      cairo_rel_move_to (cr, -extents.width / 2, 0);
-      cairo_show_text (cr, "Distance");
-
-      cairo_move_to (cr, 0, 0);
-
-      cairo_restore (cr);
-    }
-
-  if (axes & GDK_AXIS_FLAG_WHEEL)
-    {
-      gdk_device_get_axis (info->last_source, info->axes, GDK_AXIS_WHEEL,
-                           &wheel);
-
-      cairo_save (cr);
-      cairo_set_line_width (cr, 10);
-      cairo_set_source_rgba (cr, 0, 0, 0, 0.5);
-
-      cairo_new_sub_path (cr);
-      cairo_arc (cr, 0, 0, 100, 0, wheel * 2 * G_PI);
-      cairo_stroke (cr);
-      cairo_restore (cr);
-    }
-
-  if (axes & GDK_AXIS_FLAG_ROTATION)
-    {
-      gdk_device_get_axis (info->last_source, info->axes, GDK_AXIS_ROTATION,
-                           &rotation);
-      rotation *= 2 * G_PI;
-
-      cairo_save (cr);
-      cairo_rotate (cr, - G_PI / 2);
-      cairo_set_line_cap (cr, CAIRO_LINE_CAP_ROUND);
-      cairo_set_line_width (cr, 5);
-
-      cairo_new_sub_path (cr);
-      cairo_arc (cr, 0, 0, 100, 0, rotation);
-      cairo_stroke (cr);
-      cairo_restore (cr);
-    }
-
-  if (axes & GDK_AXIS_FLAG_SLIDER)
-    {
-      cairo_pattern_t *pattern, *mask;
-
-      gdk_device_get_axis (info->last_source, info->axes, GDK_AXIS_SLIDER,
-                           &slider);
-
-      cairo_save (cr);
-
-      cairo_move_to (cr, 0, -10);
-      cairo_rel_line_to (cr, 0, -50);
-      cairo_rel_line_to (cr, 10, 0);
-      cairo_rel_line_to (cr, -5, 50);
-      cairo_close_path (cr);
-
-      cairo_clip_preserve (cr);
-
-      pattern = cairo_pattern_create_linear (0, -10, 0, -60);
-      cairo_pattern_add_color_stop_rgb (pattern, 0, 0, 1, 0);
-      cairo_pattern_add_color_stop_rgb (pattern, 1, 1, 0, 0);
-      cairo_set_source (cr, pattern);
-      cairo_pattern_destroy (pattern);
-
-      mask = cairo_pattern_create_linear (0, -10, 0, -60);
-      cairo_pattern_add_color_stop_rgba (mask, 0, 0, 0, 0, 1);
-      cairo_pattern_add_color_stop_rgba (mask, slider, 0, 0, 0, 1);
-      cairo_pattern_add_color_stop_rgba (mask, slider, 0, 0, 0, 0);
-      cairo_pattern_add_color_stop_rgba (mask, 1, 0, 0, 0, 0);
-      cairo_mask (cr, mask);
-      cairo_pattern_destroy (mask);
-
-      cairo_set_source_rgb (cr, 0, 0, 0);
-      cairo_stroke (cr);
-
-      cairo_restore (cr);
-    }
-
-  cairo_restore (cr);
-}
-
-static const gchar *
-tool_type_to_string (GdkDeviceToolType tool_type)
-{
-  switch (tool_type)
-    {
-    case GDK_DEVICE_TOOL_TYPE_PEN:
-      return "Pen";
-    case GDK_DEVICE_TOOL_TYPE_ERASER:
-      return "Eraser";
-    case GDK_DEVICE_TOOL_TYPE_BRUSH:
-      return "Brush";
-    case GDK_DEVICE_TOOL_TYPE_PENCIL:
-      return "Pencil";
-    case GDK_DEVICE_TOOL_TYPE_AIRBRUSH:
-      return "Airbrush";
-    case GDK_DEVICE_TOOL_TYPE_MOUSE:
-      return "Mouse";
-    case GDK_DEVICE_TOOL_TYPE_LENS:
-      return "Lens cursor";
-    case GDK_DEVICE_TOOL_TYPE_UNKNOWN:
-    default:
-      return "Unknown";
-    }
-}
-
-static void
-draw_device_info (GtkWidget        *widget,
-                  cairo_t          *cr,
-                  GdkEventSequence *sequence,
-                  gint             *y,
-                  AxesInfo         *info)
-{
-  PangoLayout *layout;
-  GString *string;
-  gint height;
-
-  cairo_save (cr);
-
-  string = g_string_new (NULL);
-  g_string_append_printf (string, "Source: %s",
-                          gdk_device_get_name (info->last_source));
-
-  if (sequence)
-    g_string_append_printf (string, "\nSequence: %d",
-                            GPOINTER_TO_UINT (sequence));
-
-  if (info->last_tool)
-    {
-      const gchar *tool_type;
-      guint64 serial;
-
-      tool_type = tool_type_to_string (gdk_device_tool_get_tool_type (info->last_tool));
-      serial = gdk_device_tool_get_serial (info->last_tool);
-      g_string_append_printf (string, "\nTool: %s", tool_type);
-
-      if (serial != 0)
-        g_string_append_printf (string, ", Serial: %lx", serial);
-    }
-
-  cairo_move_to (cr, 10, *y);
-  layout = gtk_widget_create_pango_layout (widget, string->str);
-  pango_cairo_show_layout (cr, layout);
-  cairo_stroke (cr);
-
-  pango_layout_get_pixel_size (layout, NULL, &height);
-
-  gdk_cairo_set_source_rgba (cr, &info->color);
-  cairo_set_line_width (cr, 10);
-  cairo_move_to (cr, 0, *y);
-
-  *y = *y + height;
-  cairo_line_to (cr, 0, *y);
-  cairo_stroke (cr);
-
-  cairo_restore (cr);
-
-  g_object_unref (layout);
-  g_string_free (string, TRUE);
-}
-
-static void
-draw_cb (GtkDrawingArea *da,
-         cairo_t        *cr,
-         int             width,
-         int             height,
-         gpointer        user_data)
-{
-  GtkWidget *widget = GTK_WIDGET (da);
-  EventData *data = user_data;
-  AxesInfo *info;
-  GHashTableIter iter;
-  gpointer key, value;
-  gint y = 0;
-
-  /* Draw Abs info */
-  g_hash_table_iter_init (&iter, data->pointer_info);
-
-  while (g_hash_table_iter_next (&iter, NULL, &value))
-    {
-      info = value;
-      draw_axes_info (cr, info, width, height);
-    }
-
-  g_hash_table_iter_init (&iter, data->touch_info);
-
-  while (g_hash_table_iter_next (&iter, NULL, &value))
-    {
-      info = value;
-      draw_axes_info (cr, info, width, height);
-    }
-
-  /* Draw name, color legend and misc data */
-  g_hash_table_iter_init (&iter, data->pointer_info);
-
-  while (g_hash_table_iter_next (&iter, NULL, &value))
-    {
-      info = value;
-      draw_device_info (widget, cr, NULL, &y, info);
-    }
-
-  g_hash_table_iter_init (&iter, data->touch_info);
-
-  while (g_hash_table_iter_next (&iter, &key, &value))
-    {
-      info = value;
-      draw_device_info (widget, cr, key, &y, info);
-    }
-}
-
-static void
-update_label_text (GtkWidget   *label,
-                   const gchar *text)
-{
-  gchar *markup = NULL;
-
-  if (text)
-    markup = g_strdup_printf ("<span font='48.0'>%s</span>", text);
-  gtk_label_set_markup (GTK_LABEL (label), markup);
-  g_free (markup);
-}
-
-static gboolean
-reset_label_text_timeout_cb (gpointer user_data)
-{
-  GtkWidget *label = user_data;
-
-  update_label_text (label, NULL);
-  pad_action_timeout_id = 0;
-  return G_SOURCE_REMOVE;
-}
-
-static void
-update_label_and_timeout (GtkWidget   *label,
-                          const gchar *text)
-{
-  if (pad_action_timeout_id)
-    g_source_remove (pad_action_timeout_id);
-
-  update_label_text (label, text);
-  pad_action_timeout_id = g_timeout_add (200, reset_label_text_timeout_cb, label);
-}
-
-static void
-on_action_activate (GSimpleAction *action,
-                    GVariant      *parameter,
-                    gpointer       user_data)
-{
-  GtkWidget *label = user_data;
-  const gchar *result;
-  gchar *str;
-
-  result = g_object_get_data (G_OBJECT (action), "action-result");
-
-  if (!parameter)
-    update_label_and_timeout (label, result);
-  else
-    {
-      str = g_strdup_printf ("%s %.2f", result, g_variant_get_double (parameter));
-      update_label_and_timeout (label, str);
-      g_free (str);
-    }
-}
-
-static void
-init_pad_controller (GtkWidget *window,
-                     GtkWidget *label)
-{
-  GtkPadController *pad_controller;
-  GSimpleActionGroup *action_group;
-  GSimpleAction *action;
-  gint i;
-
-  action_group = g_simple_action_group_new ();
-  pad_controller = gtk_pad_controller_new (GTK_WINDOW (window),
-                                           G_ACTION_GROUP (action_group),
-                                           NULL);
-
-  for (i = 0; i < G_N_ELEMENTS (pad_actions); i++)
-    {
-      if (pad_actions[i].type == GTK_PAD_ACTION_BUTTON)
-        {
-          action = g_simple_action_new (pad_actions[i].action_name, NULL);
-        }
-      else
-        {
-          action = g_simple_action_new_stateful (pad_actions[i].action_name,
-                                                 G_VARIANT_TYPE_DOUBLE, NULL);
-        }
-
-      g_signal_connect (action, "activate",
-                        G_CALLBACK (on_action_activate), label);
-      g_object_set_data (G_OBJECT (action), "action-result",
-                         (gpointer) pad_action_results[i]);
-      g_action_map_add_action (G_ACTION_MAP (action_group), G_ACTION (action));
-      g_object_unref (action);
-    }
-
-  gtk_pad_controller_set_action_entries (pad_controller, pad_actions,
-                                         G_N_ELEMENTS (pad_actions));
-  g_object_set_data_full (G_OBJECT (window), "pad-controller",
-                          pad_controller, g_object_unref);
-
-  g_object_unref (action_group);
-}
-
-GtkWidget *
-do_event_axes (GtkWidget *toplevel)
-{
-  static GtkWidget *window = NULL;
-  EventData *event_data;
-  GtkWidget *label;
-  GtkWidget *overlay;
-  GtkWidget *da;
-
-  if (!window)
-    {
-      window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
-      gtk_window_set_title (GTK_WINDOW (window), "Touch and Drawing Tablets");
-
-      g_signal_connect (window, "destroy",
-                        G_CALLBACK (gtk_widget_destroyed), &window);
-
-      gtk_widget_set_support_multidevice (window, TRUE);
-
-      event_data = event_data_new ();
-      g_object_set_data_full (G_OBJECT (window), "gtk-demo-event-data",
-                              event_data, (GDestroyNotify) event_data_free);
-
-      da = gtk_drawing_area_new ();
-      gtk_drawing_area_set_content_width (GTK_DRAWING_AREA (da), 400);
-      gtk_drawing_area_set_content_height (GTK_DRAWING_AREA (da), 400);
-      gtk_drawing_area_set_draw_func (GTK_DRAWING_AREA (da), draw_cb, event_data, NULL);
-      gtk_widget_set_can_focus (da, TRUE);
-      gtk_widget_grab_focus (da);
-
-      g_signal_connect (da, "event",
-                        G_CALLBACK (event_cb), event_data);
-
-      label = gtk_label_new ("");
-      gtk_widget_set_halign (label, GTK_ALIGN_START);
-      gtk_widget_set_valign (label, GTK_ALIGN_START);
-      gtk_label_set_use_markup (GTK_LABEL (label), TRUE);
-
-      overlay = gtk_overlay_new ();
-      gtk_container_add (GTK_CONTAINER (window), overlay);
-      gtk_container_add (GTK_CONTAINER (overlay), da);
-      gtk_overlay_add_overlay (GTK_OVERLAY (overlay), label);
-
-      init_pad_controller (da, label);
-    }
-
-  if (!gtk_widget_get_visible (window))
-    gtk_widget_show (window);
-  else
-    gtk_widget_destroy (window);
-
-  return window;
-}

demos/gtk-demo/expander.c

@@ -31,6 +31,7 @@ do_expander (GtkWidget *do_widget)
   GtkWidget *toplevel;
   GtkWidget *area;
   GtkWidget *expander;
+  GtkWidget *label;
   GtkWidget *sw;
   GtkWidget *tv;
   GtkTextBuffer *buffer;
@@ -50,13 +51,19 @@ do_expander (GtkWidget *do_widget)
 
       area = gtk_message_dialog_get_message_area (GTK_MESSAGE_DIALOG (window));
 
+      label = gtk_widget_get_last_child (area);
+      gtk_label_set_line_wrap (GTK_LABEL (label), FALSE);
+      gtk_widget_set_vexpand (label, FALSE);
+
       expander = gtk_expander_new ("Details:");
+      gtk_widget_set_vexpand (expander, TRUE);
       sw = gtk_scrolled_window_new (NULL, NULL);
       gtk_scrolled_window_set_min_content_height (GTK_SCROLLED_WINDOW (sw), 100);
       gtk_scrolled_window_set_shadow_type (GTK_SCROLLED_WINDOW (sw), GTK_SHADOW_IN);
       gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (sw),
                                       GTK_POLICY_NEVER,
                                       GTK_POLICY_AUTOMATIC);
+      gtk_scrolled_window_set_propagate_natural_height (GTK_SCROLLED_WINDOW (sw), TRUE);
 
       tv = gtk_text_view_new ();
       buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (tv));
@@ -73,7 +80,7 @@ do_expander (GtkWidget *do_widget)
                                 "resize the window. Do it already !", -1);
       gtk_container_add (GTK_CONTAINER (sw), tv);
       gtk_container_add (GTK_CONTAINER (expander), sw);
-      gtk_box_pack_end (GTK_BOX (area), expander);
+      gtk_container_add (GTK_CONTAINER (area), expander);
       g_signal_connect (expander, "notify::expanded",
                         G_CALLBACK (expander_cb), window);
 

demos/gtk-demo/filtermodel.c

@@ -124,8 +124,8 @@ do_filtermodel (GtkWidget *do_widget)
       builder = gtk_builder_new_from_resource ("/filtermodel/filtermodel.ui");
       gtk_builder_connect_signals (builder, NULL);
       window = GTK_WIDGET (gtk_builder_get_object (builder, "window1"));
-      gtk_window_set_screen (GTK_WINDOW (window),
-                             gtk_widget_get_screen (do_widget));
+      gtk_window_set_display (GTK_WINDOW (window),
+                              gtk_widget_get_display (do_widget));
       g_signal_connect (window, "destroy",
                         G_CALLBACK (gtk_widget_destroyed), &window);
 

demos/gtk-demo/filtermodel.ui

@@ -1,12 +1,9 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<!-- Generated with glade 3.18.1 -->
 <interface>
   <requires lib="gtk+" version="3.16"/>
   <object class="GtkListStore" id="liststore1">
     <columns>
-      <!-- column-name width -->
       <column type="gint"/>
-      <!-- column-name height -->
       <column type="gint"/>
     </columns>
     <data>
@@ -34,31 +31,31 @@
     <property name="title" translatable="yes">Filter Model</property>
     <child>
       <object class="GtkGrid" id="grid1">
-        <property name="visible">1</property>
         <property name="margin">10</property>
-        <property name="row_spacing">10</property>
-        <property name="column_spacing">10</property>
-        <property name="column_homogeneous">1</property>
+        <property name="row-spacing">10</property>
+        <property name="column-spacing">10</property>
+        <property name="column-homogeneous">1</property>
         <child>
           <object class="GtkLabel" id="label1">
-            <property name="visible">1</property>
             <property name="label" translatable="yes">Original</property>
             <property name="xalign">0</property>
             <attributes>
-              <attribute name="weight" value="bold"/>
+              <attribute name="weight" value="bold"></attribute>
             </attributes>
+            <accessibility>
+              <relation type="label-for" target="treeview1"/>
+            </accessibility>
+            <layout>
+              <property name="left-attach">0</property>
+              <property name="top-attach">0</property>
+            </layout>
           </object>
-          <packing>
-            <property name="left_attach">0</property>
-            <property name="top_attach">0</property>
-          </packing>
         </child>
         <child>
           <object class="GtkTreeView" id="treeview1">
-            <property name="visible">1</property>
-            <property name="can_focus">1</property>
+            <property name="can-focus">1</property>
             <property name="model">liststore1</property>
-            <property name="headers_clickable">0</property>
+            <property name="headers-clickable">0</property>
             <child internal-child="selection">
               <object class="GtkTreeSelection" id="treeview-selection1"/>
             </child>
@@ -84,18 +81,20 @@
                 </child>
               </object>
             </child>
+            <accessibility>
+              <relation type="labelled-by" target="label1"/>
+            </accessibility>
+            <layout>
+              <property name="left-attach">0</property>
+              <property name="top-attach">1</property>
+            </layout>
           </object>
-          <packing>
-            <property name="left_attach">0</property>
-            <property name="top_attach">1</property>
-          </packing>
         </child>
         <child>
           <object class="GtkTreeView" id="treeview2">
-            <property name="visible">1</property>
-            <property name="can_focus">1</property>
-            <property name="headers_clickable">0</property>
-            <property name="search_column">0</property>
+            <property name="can-focus">1</property>
+            <property name="headers-clickable">0</property>
+            <property name="search-column">0</property>
             <child internal-child="selection">
               <object class="GtkTreeSelection" id="treeview-selection3"/>
             </child>
@@ -133,46 +132,52 @@
                 </child>
               </object>
             </child>
+            <accessibility>
+              <relation type="labelled-by" target="label2"/>
+            </accessibility>
+            <layout>
+              <property name="left-attach">1</property>
+              <property name="top-attach">1</property>
+            </layout>
           </object>
-          <packing>
-            <property name="left_attach">1</property>
-            <property name="top_attach">1</property>
-          </packing>
         </child>
         <child>
           <object class="GtkLabel" id="label2">
-            <property name="visible">1</property>
             <property name="label" translatable="yes">Computed Columns</property>
             <property name="xalign">0</property>
             <attributes>
-              <attribute name="weight" value="bold"/>
+              <attribute name="weight" value="bold"></attribute>
             </attributes>
+            <accessibility>
+              <relation type="label-for" target="treeview2"/>
+            </accessibility>
+            <layout>
+              <property name="left-attach">1</property>
+              <property name="top-attach">0</property>
+            </layout>
           </object>
-          <packing>
-            <property name="left_attach">1</property>
-            <property name="top_attach">0</property>
-          </packing>
         </child>
         <child>
           <object class="GtkLabel" id="label3">
-            <property name="visible">1</property>
             <property name="label" translatable="yes">Filtered</property>
             <property name="xalign">0</property>
             <attributes>
-              <attribute name="weight" value="bold"/>
+              <attribute name="weight" value="bold"></attribute>
             </attributes>
+            <accessibility>
+              <relation type="label-for" target="treeview3"/>
+            </accessibility>
+            <layout>
+              <property name="left-attach">0</property>
+              <property name="top-attach">2</property>
+            </layout>
           </object>
-          <packing>
-            <property name="left_attach">0</property>
-            <property name="top_attach">2</property>
-          </packing>
         </child>
         <child>
           <object class="GtkTreeView" id="treeview3">
-            <property name="visible">1</property>
-            <property name="can_focus">1</property>
-            <property name="headers_clickable">0</property>
-            <property name="search_column">0</property>
+            <property name="can-focus">1</property>
+            <property name="headers-clickable">0</property>
+            <property name="search-column">0</property>
             <child internal-child="selection">
               <object class="GtkTreeSelection" id="treeview-selection5"/>
             </child>
@@ -192,11 +197,14 @@
                 </child>
               </object>
             </child>
+            <accessibility>
+              <relation type="labelled-by" target="label3"/>
+            </accessibility>
+            <layout>
+              <property name="left-attach">0</property>
+              <property name="top-attach">3</property>
+            </layout>
           </object>
-          <packing>
-            <property name="left_attach">0</property>
-            <property name="top_attach">3</property>
-          </packing>
         </child>
       </object>
     </child>

demos/gtk-demo/fishbowl.c

@@ -8,165 +8,273 @@
 #include <gtk/gtk.h>
 
 #include "gtkfishbowl.h"
+#include "gtkgears.h"
 
-GtkWidget *allow_changes;
+const char *const css =
+".blurred-button {"
+"  box-shadow: 0px 0px 5px 10px rgba(0, 0, 0, 0.5);"
+"}"
+"";
 
-#define N_STATS 5
+char **icon_names = NULL;
+gsize n_icon_names = 0;
 
-#define STATS_UPDATE_TIME G_USEC_PER_SEC
+static void
+init_icon_names (GtkIconTheme *theme)
+{
+  GPtrArray *icons;
+  GList *l, *icon_list;
 
-typedef struct _Stats Stats;
-struct _Stats {
-  gint64 last_stats;
-  gint64 last_frame;
-  gint last_suggestion;
-  guint frame_counter_max;
+  if (icon_names)
+    return;
 
-  guint stats_index;
-  guint frame_counter[N_STATS];
-  guint item_counter[N_STATS];
+  icon_list = gtk_icon_theme_list_icons (theme, NULL);
+  icons = g_ptr_array_new ();
+
+  for (l = icon_list; l; l = l->next)
+    {
+      if (g_str_has_suffix (l->data, "symbolic"))
+        continue;
+
+      g_ptr_array_add (icons, g_strdup (l->data));
+    }
+
+  n_icon_names = icons->len;
+  g_ptr_array_add (icons, NULL); /* NULL-terminate the array */
+  icon_names = (char **) g_ptr_array_free (icons, FALSE);
+
+  /* don't free strings, we assigned them to the array */
+  g_list_free_full (icon_list, g_free);
+}
+
+static const char *
+get_random_icon_name (GtkIconTheme *theme)
+{
+  init_icon_names (theme);
+
+  return icon_names[g_random_int_range(0, n_icon_names)];
+}
+
+GtkWidget *
+create_icon (void)
+{
+  GtkWidget *image;
+
+  image = gtk_image_new_from_icon_name (get_random_icon_name (gtk_icon_theme_get_default ()));
+  gtk_image_set_icon_size (GTK_IMAGE (image), GTK_ICON_SIZE_LARGE);
+
+  return image;
+}
+
+static GtkWidget *
+create_button (void)
+{
+  return gtk_button_new_with_label ("Button");
+}
+
+static GtkWidget *
+create_blurred_button (void)
+{
+  GtkWidget *w = gtk_button_new ();
+
+  gtk_style_context_add_class (gtk_widget_get_style_context (w), "blurred-button");
+
+  return w;
+}
+
+static GtkWidget *
+create_font_button (void)
+{
+  return gtk_font_button_new ();
+}
+
+static GtkWidget *
+create_level_bar (void)
+{
+  GtkWidget *w = gtk_level_bar_new_for_interval (0, 100);
+
+  gtk_level_bar_set_value (GTK_LEVEL_BAR (w), 50);
+
+  /* Force them to be a bit larger */
+  gtk_widget_set_size_request (w, 200, -1);
+
+  return w;
+}
+
+static GtkWidget *
+create_spinner (void)
+{
+  GtkWidget *w = gtk_spinner_new ();
+
+  gtk_spinner_start (GTK_SPINNER (w));
+
+  return w;
+}
+
+static GtkWidget *
+create_spinbutton (void)
+{
+  GtkWidget *w = gtk_spin_button_new_with_range (0, 10, 1);
+
+  return w;
+}
+
+static GtkWidget *
+create_label (void)
+{
+  GtkWidget *w = gtk_label_new ("pLorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua.");
+
+  gtk_label_set_line_wrap (GTK_LABEL (w), TRUE);
+  gtk_label_set_max_width_chars (GTK_LABEL (w), 100);
+
+  return w;
+}
+
+static GtkWidget *
+create_video (void)
+{
+  GtkMediaStream *stream = gtk_media_file_new_for_resource ("/images/gtk-logo.webm");
+  GtkWidget *w = gtk_picture_new_for_paintable (GDK_PAINTABLE (stream));
+
+  gtk_widget_set_size_request (w, 64, 64);
+  gtk_media_stream_set_loop (stream, TRUE);
+  gtk_media_stream_play (stream);
+  g_object_unref (stream);
+
+  return w;
+}
+
+static GtkWidget *
+create_gears (void)
+{
+  GtkWidget *w = gtk_gears_new ();
+
+  gtk_widget_set_size_request (w, 100, 100);
+
+  return w;
+}
+
+static GtkWidget *
+create_switch (void)
+{
+  GtkWidget *w = gtk_switch_new ();
+
+  gtk_switch_set_state (GTK_SWITCH (w), TRUE);
+
+  return w;
+}
+
+static const struct {
+  const char *name;
+  GtkWidget * (*create_func) (void);
+} widget_types[] = {
+  { "Icon",       create_icon           },
+  { "Button",     create_button         },
+  { "Blurbutton", create_blurred_button },
+  { "Fontbutton", create_font_button    },
+  { "Levelbar",   create_level_bar      },
+  { "Label",      create_label          },
+  { "Spinner",    create_spinner        },
+  { "Spinbutton", create_spinbutton     },
+  { "Video",      create_video          },
+  { "Gears",      create_gears          },
+  { "Switch",     create_switch         },
 };
 
-static Stats *
-get_stats (GtkWidget *widget)
-{
-  static GQuark stats_quark = 0;
-  Stats *stats;
-
-  if (G_UNLIKELY (stats_quark == 0))
-    stats_quark = g_quark_from_static_string ("stats");
-
-  stats = g_object_get_qdata (G_OBJECT (widget), stats_quark);
-  if (stats == NULL)
-    {
-      stats = g_new0 (Stats, 1);
-      g_object_set_qdata_full (G_OBJECT (widget), stats_quark, stats, g_free);
-      stats->last_frame = gdk_frame_clock_get_frame_time (gtk_widget_get_frame_clock (widget));
-      stats->last_stats = stats->last_frame;
-    }
-
-  return stats;
-}
+static int selected_widget_type = -1;
+static const int N_WIDGET_TYPES = G_N_ELEMENTS (widget_types);
 
 static void
-do_stats (GtkWidget *widget,
-          GtkWidget *info_label,
-          gint      *suggested_change)
+set_widget_type (GtkFishbowl *fishbowl,
+                 int          widget_type_index)
 {
-  Stats *stats;
-  gint64 frame_time;
+  GtkWidget *window, *headerbar;
 
-  stats = get_stats (widget);
-  frame_time = gdk_frame_clock_get_frame_time (gtk_widget_get_frame_clock (widget));
+  if (widget_type_index == selected_widget_type)
+    return;
 
-  if (stats->last_stats + STATS_UPDATE_TIME < frame_time)
-    {
-      char *new_label;
-      guint i, n_frames;
+  selected_widget_type = widget_type_index;
 
-      n_frames = 0;
-      for (i = 0; i < N_STATS; i++)
-        {
-          n_frames += stats->frame_counter[i];
-        }
-      
-      new_label = g_strdup_printf ("icons - %.1f fps",
-                                   (double) G_USEC_PER_SEC * n_frames
-                                       / (N_STATS * STATS_UPDATE_TIME));
-      gtk_label_set_label (GTK_LABEL (info_label), new_label);
-      g_free (new_label);
+  gtk_fishbowl_set_creation_func (fishbowl,
+                                  widget_types[selected_widget_type].create_func);
 
-      if (stats->frame_counter[stats->stats_index] >= 19 * stats->frame_counter_max / 20)
-        {
-          if (stats->last_suggestion > 0)
-            stats->last_suggestion *= 2;
-          else
-            stats->last_suggestion = 1;
-        }
-      else
-        {
-          if (stats->last_suggestion < 0)
-            stats->last_suggestion--;
-          else
-            stats->last_suggestion = -1;
-          stats->last_suggestion = MAX (stats->last_suggestion, 1 - (int) stats->item_counter[stats->stats_index]);
-        }
+  window = gtk_widget_get_toplevel (GTK_WIDGET (fishbowl));
+  headerbar = gtk_window_get_titlebar (GTK_WINDOW (window));
+  gtk_header_bar_set_title (GTK_HEADER_BAR (headerbar),
+                            widget_types[selected_widget_type].name);
+}
 
-      stats->stats_index = (stats->stats_index + 1) % N_STATS;
-      stats->frame_counter[stats->stats_index] = 0;
-      stats->item_counter[stats->stats_index] = stats->item_counter[(stats->stats_index + N_STATS - 1) % N_STATS];
-      stats->last_stats = frame_time;
-      
-      if (suggested_change)
-        *suggested_change = stats->last_suggestion;
-      else
-        stats->last_suggestion = 0;
-    }
+void
+next_button_clicked_cb (GtkButton *source,
+                        gpointer   user_data)
+{
+  GtkFishbowl *fishbowl = user_data;
+  int new_index;
+
+  if (selected_widget_type + 1 >= N_WIDGET_TYPES)
+    new_index = 0;
   else
-    {
-      if (suggested_change)
-        *suggested_change = 0;
-    }
+    new_index = selected_widget_type + 1;
 
-  stats->last_frame = frame_time;
-  stats->frame_counter[stats->stats_index]++;
-  stats->frame_counter_max = MAX (stats->frame_counter_max, stats->frame_counter[stats->stats_index]);
+  set_widget_type (fishbowl, new_index);
 }
 
-static void
-stats_update (GtkWidget *widget)
+void
+prev_button_clicked_cb (GtkButton *source,
+                        gpointer   user_data)
 {
-  Stats *stats;
+  GtkFishbowl *fishbowl = user_data;
+  int new_index;
 
-  stats = get_stats (widget);
+  if (selected_widget_type - 1 < 0)
+    new_index = N_WIDGET_TYPES - 1;
+  else
+    new_index = selected_widget_type - 1;
 
-  stats->item_counter[stats->stats_index] = gtk_fishbowl_get_count (GTK_FISHBOWL (widget));
+  set_widget_type (fishbowl, new_index);
 }
 
-static gboolean
-move_fish (GtkWidget     *bowl,
-           GdkFrameClock *frame_clock,
-           gpointer       info_label)
-{
-  gint suggested_change = 0;
-  
-  do_stats (bowl,
-            info_label,
-            !gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (allow_changes)) ? &suggested_change : NULL);
-
-  gtk_fishbowl_set_count (GTK_FISHBOWL (bowl),
-                          gtk_fishbowl_get_count (GTK_FISHBOWL (bowl)) + suggested_change);
-  stats_update (bowl);
-
-  return G_SOURCE_CONTINUE;
-}
 
 GtkWidget *
 do_fishbowl (GtkWidget *do_widget)
 {
   static GtkWidget *window = NULL;
+  static GtkCssProvider *provider = NULL;
+
+  if (provider == NULL)
+    {
+      provider = gtk_css_provider_new ();
+      gtk_css_provider_load_from_data (provider, css, -1);
+      gtk_style_context_add_provider_for_display (gdk_display_get_default (),
+                                                  GTK_STYLE_PROVIDER (provider),
+                                                  GTK_STYLE_PROVIDER_PRIORITY_APPLICATION);
+    }
 
   if (!window)
     {
       GtkBuilder *builder;
-      GtkWidget *bowl, *info_label;
+      GtkWidget *bowl;
 
       g_type_ensure (GTK_TYPE_FISHBOWL);
 
       builder = gtk_builder_new_from_resource ("/fishbowl/fishbowl.ui");
+      gtk_builder_add_callback_symbols (builder,
+                                        "next_button_clicked_cb", G_CALLBACK (next_button_clicked_cb),
+                                        "prev_button_clicked_cb", G_CALLBACK (prev_button_clicked_cb),
+                                        NULL);
       gtk_builder_connect_signals (builder, NULL);
       window = GTK_WIDGET (gtk_builder_get_object (builder, "window"));
+      g_signal_connect (window, "destroy",
+                        G_CALLBACK (gtk_widget_destroyed), &window);
       bowl = GTK_WIDGET (gtk_builder_get_object (builder, "bowl"));
-      gtk_fishbowl_set_use_icons (GTK_FISHBOWL (bowl), TRUE);
-      info_label = GTK_WIDGET (gtk_builder_get_object (builder, "info_label"));
-      allow_changes = GTK_WIDGET (gtk_builder_get_object (builder, "changes_allow"));
-      gtk_window_set_screen (GTK_WINDOW (window),
-                             gtk_widget_get_screen (do_widget));
+      selected_widget_type = -1;
+      set_widget_type (GTK_FISHBOWL (bowl), 0);
+      gtk_window_set_display (GTK_WINDOW (window),
+                              gtk_widget_get_display (do_widget));
       g_signal_connect (window, "destroy",
                         G_CALLBACK (gtk_widget_destroyed), &window);
 
       gtk_widget_realize (window);
-      gtk_widget_add_tick_callback (bowl, move_fish, info_label, NULL);
     }
 
   if (!gtk_widget_get_visible (window))
@@ -174,6 +282,5 @@ do_fishbowl (GtkWidget *do_widget)
   else
     gtk_widget_destroy (window);
 
-
   return window;
 }

demos/gtk-demo/fishbowl.ui

@@ -1,50 +1,63 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <interface>
-  <!-- interface-requires gtk+ 3.6 -->
   <object class="GtkWindow" id="window">
     <property name="title" translatable="yes">Fishbowl</property>
     <child type="titlebar">
       <object class="GtkHeaderBar" id="">
-        <property name="visible">True</property>
-        <property name="show-close-button">True</property>
+        <property name="show-title-buttons">1</property>
         <child>
-          <object class="GtkLabel" id="info_label">
-            <property name="visible">True</property>
+          <object class="GtkBox">
+            <style>
+              <class name="linked"/>
+            </style>
+            <child>
+              <object class="GtkButton">
+                <property name="icon-name">pan-start-symbolic</property>
+                <signal name="clicked" handler="prev_button_clicked_cb" object="bowl" swapped="no"/>
+              </object>
+            </child>
+            <child>
+              <object class="GtkButton">
+                <property name="icon-name">pan-end-symbolic</property>
+                <signal name="clicked" handler="next_button_clicked_cb" object="bowl" swapped="no"/>
+              </object>
+            </child>
           </object>
-          <packing>
-            <property name="pack_type">end</property>
-          </packing>
         </child>
-        <child>
+        <child type="end">
           <object class="GtkLabel">
-            <property name="visible">True</property>
-            <property name="label" bind-source="bowl" bind-property="count">0</property>
+            <property name="label">fps</property>
           </object>
-          <packing>
-            <property name="pack_type">end</property>
-          </packing>
         </child>
-        <child>
+        <child type="end">
+          <object class="GtkLabel">
+            <property name="label" bind-source="bowl" bind-property="framerate"/>
+          </object>
+        </child>
+        <child type="end">
+          <object class="GtkLabel">
+            <property name="label">Icons, </property>
+          </object>
+        </child>
+        <child type="end">
+          <object class="GtkLabel">
+            <property name="label" bind-source="bowl" bind-property="count"/>
+          </object>
+        </child>
+        <child type="end">
           <object class="GtkToggleButton" id="changes_allow">
-            <property name="active">False</property>
-            <property name="visible" bind-source="changes_allow" bind-property="active" bind-flags="invert-boolean">True</property>
+            <property name="visible" bind-source="changes_allow" bind-property="active" bind-flags="invert-boolean"/>
             <property name="icon-name">changes-allow</property>
             <property name="relief">none</property>
           </object>
-          <packing>
-            <property name="pack_type">end</property>
-          </packing>
         </child>
-        <child>
+        <child type="end">
           <object class="GtkToggleButton" id="changes_prevent">
-            <property name="active" bind-source="changes_allow" bind-property="active" bind-flags="bidirectional|invert-boolean">True</property>
-            <property name="visible" bind-source="changes_prevent" bind-property="active" bind-flags="invert-boolean">False</property>
+            <property name="active" bind-source="changes_allow" bind-property="active" bind-flags="bidirectional|invert-boolean"/>
+            <property name="visible" bind-source="changes_prevent" bind-property="active" bind-flags="invert-boolean"/>
             <property name="icon-name">changes-prevent</property>
             <property name="relief">none</property>
           </object>
-          <packing>
-            <property name="pack_type">end</property>
-          </packing>
         </child>
       </object>
     </child>
@@ -52,6 +65,7 @@
       <object class="GtkFishbowl" id="bowl">
         <property name="visible">True</property>
         <property name="animating">True</property>
+        <property name="benchmark" bind-source="changes_allow" bind-property="active" bind-flags="invert-boolean"/>
       </object>
     </child>
   </object>

demos/gtk-demo/fixed.c

@@ -0,0 +1,167 @@
+/* Fixed layout
+ *
+ * GtkFixed is a container that allows placing and transforming
+ * widgets manually.
+ */
+
+#include <gtk/gtk.h>
+
+/* This enumeration determines the paint order */
+enum {
+  FACE_BACK,
+  FACE_LEFT,
+  FACE_BOTTOM,
+  FACE_RIGHT,
+  FACE_TOP,
+  FACE_FRONT,
+
+  N_FACES
+};
+
+/* Map face widgets to CSS classes */
+static struct {
+  GtkWidget *face;
+  const char *css_class;
+} faces[N_FACES] = {
+  [FACE_BACK] = { NULL, "back", },
+  [FACE_LEFT] = { NULL, "left", },
+  [FACE_RIGHT] = { NULL, "right", },
+  [FACE_TOP] = { NULL, "top", },
+  [FACE_BOTTOM] = { NULL, "bottom", },
+  [FACE_FRONT] = { NULL, "front", },
+};
+
+static GtkWidget *
+create_faces (void)
+{
+  GtkWidget *fixed = gtk_fixed_new ();
+  int face_size = 200;
+  float w, h, d, p;
+
+  gtk_widget_set_overflow (fixed, GTK_OVERFLOW_VISIBLE);
+
+  w = (float) face_size / 2.f;
+  h = (float) face_size / 2.f;
+  d = (float) face_size / 2.f;
+  p = face_size * 3.f;
+
+  for (int i = 0; i < N_FACES; i++)
+    {
+      GskTransform *transform = NULL;
+
+      /* Add a face */
+      faces[i].face = gtk_frame_new (NULL);
+      gtk_widget_set_size_request (faces[i].face, face_size, face_size);
+      gtk_style_context_add_class (gtk_widget_get_style_context (faces[i].face), faces[i].css_class);
+      gtk_container_add (GTK_CONTAINER (fixed), faces[i].face);
+
+      /* Set up the transformation for each face */
+      transform = gsk_transform_translate (transform, &GRAPHENE_POINT_INIT (w, h));
+      transform = gsk_transform_perspective (transform, p);
+      transform = gsk_transform_rotate_3d (transform, -30.f, graphene_vec3_x_axis ());
+      transform = gsk_transform_rotate_3d (transform, 135.f, graphene_vec3_y_axis ());
+      transform = gsk_transform_translate_3d (transform, &GRAPHENE_POINT3D_INIT (0, 0, -face_size / 6.f));
+
+      switch (i)
+        {
+        case FACE_FRONT:
+          transform = gsk_transform_rotate_3d (transform, 0.f, graphene_vec3_y_axis ());
+          break;
+
+        case FACE_BACK:
+          transform = gsk_transform_rotate_3d (transform, -180.f, graphene_vec3_y_axis ());
+          break;
+
+        case FACE_RIGHT:
+          transform = gsk_transform_rotate_3d (transform, 90.f, graphene_vec3_y_axis ());
+          break;
+
+        case FACE_LEFT:
+          transform = gsk_transform_rotate_3d (transform, -90.f, graphene_vec3_y_axis ());
+          break;
+
+        case FACE_TOP:
+          transform = gsk_transform_rotate_3d (transform, 90.f, graphene_vec3_x_axis ());
+          break;
+
+        case FACE_BOTTOM:
+          transform = gsk_transform_rotate_3d (transform, -90.f, graphene_vec3_x_axis ());
+          break;
+
+        default:
+          break;
+        }
+
+      transform = gsk_transform_translate_3d (transform, &GRAPHENE_POINT3D_INIT (0, 0, d));
+      transform = gsk_transform_translate_3d (transform, &GRAPHENE_POINT3D_INIT (-w, -h, 0));
+
+      gtk_fixed_set_child_transform (GTK_FIXED (fixed), faces[i].face, transform);
+      gsk_transform_unref (transform);
+    }
+
+  return fixed;
+}
+
+static GtkWidget *demo_window = NULL;
+static GtkCssProvider *provider = NULL;
+
+static void
+close_window (GtkWidget *widget)
+{
+  /* Reset the state */
+  for (int i = 0; i < N_FACES; i++)
+    faces[i].face = NULL;
+
+  gtk_style_context_remove_provider_for_display (gdk_display_get_default (),
+                                                 GTK_STYLE_PROVIDER (provider));
+  provider = NULL;
+
+  demo_window = NULL;
+}
+
+static GtkWidget *
+create_demo_window (GtkWidget *do_widget)
+{
+  GtkWidget *window, *sw, *fixed, *cube;
+
+  window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
+  gtk_window_set_display (GTK_WINDOW (window),  gtk_widget_get_display (do_widget));
+  gtk_window_set_title (GTK_WINDOW (window), "Fixed layout");
+  gtk_window_set_default_size (GTK_WINDOW (window), 600, 400);
+  g_signal_connect (window, "destroy", G_CALLBACK (close_window), NULL);
+
+  sw = gtk_scrolled_window_new (NULL, NULL);
+  gtk_container_add (GTK_CONTAINER (window), sw);
+
+  fixed = gtk_fixed_new ();
+  gtk_container_add (GTK_CONTAINER (sw), fixed);
+  gtk_widget_set_halign (GTK_WIDGET (fixed), GTK_ALIGN_CENTER);
+  gtk_widget_set_valign (GTK_WIDGET (fixed), GTK_ALIGN_CENTER);
+
+  cube = create_faces ();
+  gtk_container_add (GTK_CONTAINER (fixed), cube);
+  gtk_widget_set_overflow (fixed, GTK_OVERFLOW_VISIBLE);
+
+  provider = gtk_css_provider_new ();
+  gtk_css_provider_load_from_resource (provider, "/fixed/fixed.css");
+  gtk_style_context_add_provider_for_display (gdk_display_get_default (),
+                                              GTK_STYLE_PROVIDER (provider),
+                                              800);
+  g_object_unref (provider);
+
+  return window;
+}
+
+GtkWidget*
+do_fixed (GtkWidget *do_widget)
+{
+  if (demo_window == NULL)
+    demo_window = create_demo_window (do_widget);
+
+  if (!gtk_widget_get_visible (demo_window))
+    gtk_widget_show (demo_window);
+  else
+    gtk_widget_destroy (demo_window);
+
+  return demo_window;
+}

demos/gtk-demo/fixed.css

@@ -0,0 +1,29 @@
+frame.front {
+  border: 2px solid white;
+  background-color: rgba(228, 0, 0, 0.8);
+}
+
+frame.back {
+  border: 2px solid white;
+  background-color: rgba(228, 0, 0, 0.8);
+}
+
+frame.right {
+  border: 2px solid white;
+  background-color: rgba(127, 231, 25, 0.8);
+}
+
+frame.left {
+  border: 2px solid white;
+  background-color: rgba(127, 231, 25, 0.8);
+}
+
+frame.top {
+  border: 2px solid white;
+  background-color: rgba(114, 159, 207, 0.8);
+}
+
+frame.bottom {
+  border: 2px solid white;
+  background-color: rgba(114, 159, 207, 0.8);
+}

demos/gtk-demo/flowbox.c

@@ -720,8 +720,8 @@ do_flowbox (GtkWidget *do_widget)
   if (!window)
     {
       window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
-      gtk_window_set_screen (GTK_WINDOW (window),
-                             gtk_widget_get_screen (do_widget));
+      gtk_window_set_display (GTK_WINDOW (window),
+                              gtk_widget_get_display (do_widget));
       gtk_window_set_title (GTK_WINDOW (window), "Flow Box");
       gtk_window_set_default_size (GTK_WINDOW (window), 400, 600);
 

demos/gtk-demo/fontplane.c

@@ -0,0 +1,315 @@
+/* GTK - The GIMP Toolkit
+ * Copyright (C) 2012 Red Hat, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "config.h"
+
+#include "fontplane.h"
+
+#include "gtk.h"
+
+enum {
+  PROP_0,
+  PROP_WEIGHT_ADJUSTMENT,
+  PROP_WIDTH_ADJUSTMENT
+};
+
+G_DEFINE_TYPE (GtkFontPlane, gtk_font_plane, GTK_TYPE_WIDGET)
+
+static double
+adjustment_get_normalized_value (GtkAdjustment *adj)
+{
+  return (gtk_adjustment_get_value (adj) - gtk_adjustment_get_lower (adj)) /
+        (gtk_adjustment_get_upper (adj) - gtk_adjustment_get_lower (adj));
+}
+
+static void
+val_to_xy (GtkFontPlane *plane,
+           gint          *x,
+           gint          *y)
+{
+  gdouble u, v;
+  gint width, height;
+
+  width = gtk_widget_get_allocated_width (GTK_WIDGET (plane));
+  height = gtk_widget_get_allocated_height (GTK_WIDGET (plane));
+
+  u = adjustment_get_normalized_value (plane->width_adj);
+  v = adjustment_get_normalized_value (plane->weight_adj);
+
+  *x = CLAMP (width * u, 0, width - 1);
+  *y = CLAMP (height * (1 - v), 0, height - 1);
+}
+
+static void
+plane_snapshot (GtkWidget   *widget,
+                GtkSnapshot *snapshot)
+{
+  GtkFontPlane *plane = GTK_FONT_PLANE (widget);
+  gint x, y;
+  gint width, height;
+  cairo_t *cr;
+
+  val_to_xy (plane, &x, &y);
+  width = gtk_widget_get_allocated_width (widget);
+  height = gtk_widget_get_allocated_height (widget);
+
+  cr = gtk_snapshot_append_cairo (snapshot,
+                                  &GRAPHENE_RECT_INIT (0, 0, width, height));
+
+  cairo_set_source_rgb (cr, 0, 0, 0);
+  cairo_rectangle (cr, 0, 0, width, height);
+  cairo_paint (cr);
+
+  cairo_move_to (cr, 0,     y + 0.5);
+  cairo_line_to (cr, width, y + 0.5);
+
+  cairo_move_to (cr, x + 0.5, 0);
+  cairo_line_to (cr, x + 0.5, height);
+
+  if (gtk_widget_has_visible_focus (widget))
+    {
+      cairo_set_line_width (cr, 3.0);
+      cairo_set_source_rgba (cr, 1.0, 1.0, 1.0, 0.6);
+      cairo_stroke_preserve (cr);
+
+      cairo_set_line_width (cr, 1.0);
+      cairo_set_source_rgba (cr, 0.0, 0.0, 0.0, 0.8);
+      cairo_stroke (cr);
+    }
+  else
+    {
+      cairo_set_line_width (cr, 1.0);
+      cairo_set_source_rgba (cr, 0.8, 0.8, 0.8, 0.8);
+      cairo_stroke (cr);
+    }
+
+  cairo_destroy (cr);
+}
+
+static void
+set_cross_cursor (GtkWidget *widget,
+                  gboolean   enabled)
+{
+  if (enabled)
+    gtk_widget_set_cursor_from_name (widget, "crosshair");
+  else
+    gtk_widget_set_cursor (widget, NULL);
+}
+
+static void
+adj_changed (GtkFontPlane *plane)
+{
+  gtk_widget_queue_draw (GTK_WIDGET (plane));
+}
+
+static void
+adjustment_set_normalized_value (GtkAdjustment *adj,
+                                 double         val)
+{
+  gtk_adjustment_set_value (adj,
+      gtk_adjustment_get_lower (adj) +
+          val * (gtk_adjustment_get_upper (adj) - gtk_adjustment_get_lower (adj)));
+}
+
+static void
+update_value (GtkFontPlane *plane,
+              gint           x,
+              gint           y)
+{
+  GtkWidget *widget = GTK_WIDGET (plane);
+  gdouble u, v;
+
+  u = CLAMP (x * (1.0 / gtk_widget_get_allocated_width (widget)), 0, 1);
+  v = CLAMP (1 - y * (1.0 / gtk_widget_get_allocated_height (widget)), 0, 1);
+
+  adjustment_set_normalized_value (plane->width_adj, u);
+  adjustment_set_normalized_value (plane->weight_adj, v);
+
+  gtk_widget_queue_draw (widget);
+}
+
+static void
+hold_action (GtkGestureLongPress *gesture,
+             gdouble              x,
+             gdouble              y,
+             GtkFontPlane       *plane)
+{
+  gboolean handled;
+
+  g_signal_emit_by_name (plane, "popup-menu", &handled);
+}
+
+static void
+plane_drag_gesture_begin (GtkGestureDrag *gesture,
+                          gdouble         start_x,
+                          gdouble         start_y,
+                          GtkFontPlane  *plane)
+{
+  guint button;
+
+  button = gtk_gesture_single_get_current_button (GTK_GESTURE_SINGLE (gesture));
+
+  if (button == GDK_BUTTON_SECONDARY)
+    {
+      gboolean handled;
+
+      g_signal_emit_by_name (plane, "popup-menu", &handled);
+    }
+
+  if (button != GDK_BUTTON_PRIMARY)
+    {
+      gtk_gesture_set_state (GTK_GESTURE (gesture), GTK_EVENT_SEQUENCE_DENIED);
+      return;
+    }
+
+  set_cross_cursor (GTK_WIDGET (plane), TRUE);
+  update_value (plane, start_x, start_y);
+  gtk_widget_grab_focus (GTK_WIDGET (plane));
+  gtk_gesture_set_state (GTK_GESTURE (gesture), GTK_EVENT_SEQUENCE_CLAIMED);
+}
+
+static void
+plane_drag_gesture_update (GtkGestureDrag *gesture,
+                           gdouble         offset_x,
+                           gdouble         offset_y,
+                           GtkFontPlane  *plane)
+{
+  gdouble start_x, start_y;
+
+  gtk_gesture_drag_get_start_point (GTK_GESTURE_DRAG (gesture),
+                                    &start_x, &start_y);
+  update_value (plane, start_x + offset_x, start_y + offset_y);
+}
+
+static void
+plane_drag_gesture_end (GtkGestureDrag *gesture,
+                        gdouble         offset_x,
+                        gdouble         offset_y,
+                        GtkFontPlane  *plane)
+{
+  set_cross_cursor (GTK_WIDGET (plane), FALSE);
+}
+
+static void
+gtk_font_plane_init (GtkFontPlane *plane)
+{
+  GtkGesture *gesture;
+
+  gtk_widget_set_has_surface (GTK_WIDGET (plane), FALSE);
+  gtk_widget_set_can_focus (GTK_WIDGET (plane), TRUE);
+
+  gesture = gtk_gesture_drag_new ();
+  g_signal_connect (gesture, "drag-begin",
+		    G_CALLBACK (plane_drag_gesture_begin), plane);
+  g_signal_connect (gesture, "drag-update",
+		    G_CALLBACK (plane_drag_gesture_update), plane);
+  g_signal_connect (gesture, "drag-end",
+		    G_CALLBACK (plane_drag_gesture_end), plane);
+  gtk_gesture_single_set_button (GTK_GESTURE_SINGLE (gesture), 0);
+  gtk_widget_add_controller (GTK_WIDGET (plane), GTK_EVENT_CONTROLLER (gesture));
+
+  gesture = gtk_gesture_long_press_new ();
+  g_signal_connect (gesture, "pressed",
+                    G_CALLBACK (hold_action), plane);
+  gtk_gesture_single_set_touch_only (GTK_GESTURE_SINGLE (gesture),
+                                     TRUE);
+  gtk_widget_add_controller (GTK_WIDGET (plane), GTK_EVENT_CONTROLLER (gesture));
+}
+
+static void
+plane_finalize (GObject *object)
+{
+  GtkFontPlane *plane = GTK_FONT_PLANE (object);
+
+  g_clear_object (&plane->weight_adj);
+  g_clear_object (&plane->width_adj);
+
+  G_OBJECT_CLASS (gtk_font_plane_parent_class)->finalize (object);
+}
+
+static void
+plane_set_property (GObject      *object,
+		    guint         prop_id,
+		    const GValue *value,
+		    GParamSpec   *pspec)
+{
+  GtkFontPlane *plane = GTK_FONT_PLANE (object);
+  GtkAdjustment *adjustment;
+
+  switch (prop_id)
+    {
+    case PROP_WEIGHT_ADJUSTMENT:
+      adjustment = GTK_ADJUSTMENT (g_value_get_object (value));
+      if (adjustment)
+	{
+	  plane->weight_adj = g_object_ref_sink (adjustment);
+	  g_signal_connect_swapped (adjustment, "value-changed", G_CALLBACK (adj_changed), plane);
+	}
+      break;
+    case PROP_WIDTH_ADJUSTMENT:
+      adjustment = GTK_ADJUSTMENT (g_value_get_object (value));
+      if (adjustment)
+	{
+	  plane->width_adj = g_object_ref_sink (adjustment);
+	  g_signal_connect_swapped (adjustment, "value-changed", G_CALLBACK (adj_changed), plane);
+	}
+      break;
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+      break;
+    }
+}
+
+static void
+gtk_font_plane_class_init (GtkFontPlaneClass *class)
+{
+  GObjectClass *object_class = G_OBJECT_CLASS (class);
+  GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
+
+  object_class->finalize = plane_finalize;
+  object_class->set_property = plane_set_property;
+
+  widget_class->snapshot = plane_snapshot;
+
+  g_object_class_install_property (object_class,
+                                   PROP_WEIGHT_ADJUSTMENT,
+                                   g_param_spec_object ("weight-adjustment",
+                                                        NULL,
+                                                        NULL,
+							GTK_TYPE_ADJUSTMENT,
+							G_PARAM_WRITABLE |
+							G_PARAM_CONSTRUCT_ONLY));
+
+  g_object_class_install_property (object_class,
+                                   PROP_WIDTH_ADJUSTMENT,
+                                   g_param_spec_object ("width-adjustment",
+                                                        NULL,
+                                                        NULL,
+							GTK_TYPE_ADJUSTMENT,
+							G_PARAM_WRITABLE |
+							G_PARAM_CONSTRUCT_ONLY));
+}
+
+GtkWidget *
+gtk_font_plane_new (GtkAdjustment *weight_adj,
+                     GtkAdjustment *width_adj)
+{
+  return g_object_new (GTK_TYPE_FONT_PLANE,
+                       "weight-adjustment", weight_adj,
+                       "width-adjustment", width_adj,
+                       NULL);
+}

demos/gtk-demo/fontplane.h

@@ -0,0 +1,64 @@
+/* GTK - The GIMP Toolkit
+ * Copyright (C) 2012 Red Hat, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef __GTK_FONT_PLANE_H__
+#define __GTK_FONT_PLANE_H__
+
+#include <gtk/gtk.h>
+
+G_BEGIN_DECLS
+
+#define GTK_TYPE_FONT_PLANE            (gtk_font_plane_get_type ())
+#define GTK_FONT_PLANE(obj)            (G_TYPE_CHECK_INSTANCE_CAST ((obj), GTK_TYPE_FONT_PLANE, GtkFontPlane))
+#define GTK_FONT_PLANE_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass), GTK_TYPE_FONT_PLANE, GtkFontPlaneClass))
+#define GTK_IS_FONT_PLANE(obj)         (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GTK_TYPE_COLOR_PLANE))
+#define GTK_IS_FONT_PLANE_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GTK_TYPE_COLOR_PLANE))
+#define GTK_FONT_PLANE_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj), GTK_TYPE_FONT_PLANE, GtkFontPlaneClass))
+
+
+typedef struct _GtkFontPlane         GtkFontPlane;
+typedef struct _GtkFontPlaneClass    GtkFontPlaneClass;
+
+struct _GtkFontPlane
+{
+  GtkWidget parent_instance;
+
+  GtkAdjustment *weight_adj;
+  GtkAdjustment *width_adj;
+
+  GtkGesture *drag_gesture;
+};
+
+struct _GtkFontPlaneClass
+{
+  GtkWidgetClass parent_class;
+
+  /* Padding for future expansion */
+  void (*_gtk_reserved1) (void);
+  void (*_gtk_reserved2) (void);
+  void (*_gtk_reserved3) (void);
+  void (*_gtk_reserved4) (void);
+};
+
+
+GType       gtk_font_plane_get_type (void) G_GNUC_CONST;
+GtkWidget * gtk_font_plane_new      (GtkAdjustment *width_adj,
+                                     GtkAdjustment *weight_adj);
+
+G_END_DECLS
+
+#endif /* __GTK_FONT_PLANE_H__ */

demos/gtk-demo/foreigndrawing.c

@@ -1,8 +1,8 @@
 /* Foreign drawing
  *
- * Many applications can't use GTK+ widgets, for a variety of reasons,
+ * Many applications can't use GTK widgets, for a variety of reasons,
  * but still want their user interface to appear integrated with the
- * rest of the desktop, and follow GTK+ themes. This demo shows how to
+ * rest of the desktop, and follow GTK themes. This demo shows how to
  * use GtkStyleContext and the gtk_render_ APIs to achieve this.
  *
  * Note that this is a very simple, non-interactive example.
@@ -830,6 +830,7 @@ draw_spinbutton (GtkWidget *widget,
   GtkIconTheme *icon_theme;
   GtkIconInfo *icon_info;
   GdkPixbuf *pixbuf;
+  GdkTexture *texture;
   gint icon_width, icon_height, icon_size;
   gint button_width;
   gint contents_x, contents_y, contents_width, contents_height;
@@ -850,30 +851,33 @@ draw_spinbutton (GtkWidget *widget,
   draw_style_common (spin_context, cr, x, y, width, *height, NULL, NULL, NULL, NULL);
   draw_style_common (entry_context, cr, x, y, width, *height, NULL, NULL, NULL, NULL);
 
-  icon_theme = gtk_icon_theme_get_for_screen (gtk_widget_get_screen (widget));
+  icon_theme = gtk_icon_theme_get_for_display (gtk_widget_get_display (widget));
 
   gtk_style_context_get (up_context,
                          "min-width", &icon_width, "min-height", &icon_height, NULL);
   icon_size = MIN (icon_width, icon_height);
   icon_info = gtk_icon_theme_lookup_icon (icon_theme, "list-add-symbolic", icon_size, 0);
   pixbuf = gtk_icon_info_load_symbolic_for_context (icon_info, up_context, NULL, NULL);
+  texture = gdk_texture_new_for_pixbuf (pixbuf);
   g_object_unref (icon_info);
   draw_style_common (up_context, cr, x + width - button_width, y, button_width, *height,
                      &contents_x, &contents_y, &contents_width, &contents_height);
-  gtk_render_icon (up_context, cr, pixbuf, contents_x, contents_y + (contents_height - icon_size) / 2);
+  gtk_render_icon (up_context, cr, texture, contents_x, contents_y + (contents_height - icon_size) / 2);
   g_object_unref (pixbuf);
-
+  g_object_unref (texture);
 
   gtk_style_context_get (down_context,
                          "min-width", &icon_width, "min-height", &icon_height, NULL);
   icon_size = MIN (icon_width, icon_height);
   icon_info = gtk_icon_theme_lookup_icon (icon_theme, "list-remove-symbolic", icon_size, 0);
   pixbuf = gtk_icon_info_load_symbolic_for_context (icon_info, down_context, NULL, NULL);
+  texture = gdk_texture_new_for_pixbuf (pixbuf);
   g_object_unref (icon_info);
   draw_style_common (down_context, cr, x + width - 2 * button_width, y, button_width, *height,
                      &contents_x, &contents_y, &contents_width, &contents_height);
-  gtk_render_icon (down_context, cr, pixbuf, contents_x, contents_y + (contents_height - icon_size) / 2);
+  gtk_render_icon (down_context, cr, texture, contents_x, contents_y + (contents_height - icon_size) / 2);
   g_object_unref (pixbuf);
+  g_object_unref (texture);
 
   g_object_unref (down_context);
   g_object_unref (up_context);
@@ -960,8 +964,8 @@ do_foreigndrawing (GtkWidget *do_widget)
 
       window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
       gtk_window_set_title (GTK_WINDOW (window), "Foreign drawing");
-      gtk_window_set_screen (GTK_WINDOW (window),
-                             gtk_widget_get_screen (do_widget));
+      gtk_window_set_display (GTK_WINDOW (window),
+                              gtk_widget_get_display (do_widget));
       g_signal_connect (window, "destroy",
                         G_CALLBACK (gtk_widget_destroyed), &window);
 

demos/gtk-demo/geninclude.py

@@ -33,7 +33,7 @@ demos = []
 for demo_file in in_files:
     filename =  demo_file[demo_file.rfind('/')+1:]
     demo_name = filename.replace(".c", "")
-    with open(demo_file, 'r') as f:
+    with open(demo_file, 'r', encoding='utf-8') as f:
         title = f.readline().replace("/*", "").strip()
 
 

demos/gtk-demo/gestures.c

@@ -157,16 +157,15 @@ do_gestures (GtkWidget *do_widget)
                                       NULL, NULL);
 
       /* Swipe */
-      gesture = gtk_gesture_swipe_new (drawing_area);
+      gesture = gtk_gesture_swipe_new ();
       g_signal_connect (gesture, "swipe",
                         G_CALLBACK (swipe_gesture_swept), drawing_area);
       gtk_event_controller_set_propagation_phase (GTK_EVENT_CONTROLLER (gesture),
                                                   GTK_PHASE_BUBBLE);
-      g_object_weak_ref (G_OBJECT (drawing_area), (GWeakNotify) g_object_unref, gesture);
+      gtk_widget_add_controller (drawing_area, GTK_EVENT_CONTROLLER (gesture));
 
       /* 3fg swipe for touchpads */
       gesture = g_object_new (GTK_TYPE_GESTURE_SWIPE,
-                              "widget", drawing_area,
                               "n-points", 3,
                               NULL);
       g_signal_connect (gesture, "begin",
@@ -175,33 +174,34 @@ do_gestures (GtkWidget *do_widget)
                         G_CALLBACK (swipe_gesture_swept), drawing_area);
       gtk_event_controller_set_propagation_phase (GTK_EVENT_CONTROLLER (gesture),
                                                   GTK_PHASE_BUBBLE);
-      g_object_weak_ref (G_OBJECT (drawing_area), (GWeakNotify) g_object_unref, gesture);
+      gtk_widget_add_controller (drawing_area, GTK_EVENT_CONTROLLER (gesture));
+
 
       /* Long press */
-      gesture = gtk_gesture_long_press_new (drawing_area);
+      gesture = gtk_gesture_long_press_new ();
       g_signal_connect (gesture, "pressed",
                         G_CALLBACK (long_press_gesture_pressed), drawing_area);
       g_signal_connect (gesture, "end",
                         G_CALLBACK (long_press_gesture_end), drawing_area);
       gtk_event_controller_set_propagation_phase (GTK_EVENT_CONTROLLER (gesture),
                                                   GTK_PHASE_BUBBLE);
-      g_object_weak_ref (G_OBJECT (drawing_area), (GWeakNotify) g_object_unref, gesture);
+      gtk_widget_add_controller (drawing_area, GTK_EVENT_CONTROLLER (gesture));
 
       /* Rotate */
-      rotate = gesture = gtk_gesture_rotate_new (drawing_area);
+      rotate = gesture = gtk_gesture_rotate_new ();
       g_signal_connect (gesture, "angle-changed",
                         G_CALLBACK (rotation_angle_changed), drawing_area);
       gtk_event_controller_set_propagation_phase (GTK_EVENT_CONTROLLER (gesture),
                                                   GTK_PHASE_BUBBLE);
-      g_object_weak_ref (G_OBJECT (drawing_area), (GWeakNotify) g_object_unref, gesture);
+      gtk_widget_add_controller (drawing_area, GTK_EVENT_CONTROLLER (gesture));
 
       /* Zoom */
-      zoom = gesture = gtk_gesture_zoom_new (drawing_area);
+      zoom = gesture = gtk_gesture_zoom_new ();
       g_signal_connect (gesture, "scale-changed",
                         G_CALLBACK (zoom_scale_changed), drawing_area);
       gtk_event_controller_set_propagation_phase (GTK_EVENT_CONTROLLER (gesture),
                                                   GTK_PHASE_BUBBLE);
-      g_object_weak_ref (G_OBJECT (drawing_area), (GWeakNotify) g_object_unref, gesture);
+      gtk_widget_add_controller (drawing_area, GTK_EVENT_CONTROLLER (gesture));
     }
 
   if (!gtk_widget_get_visible (window))

demos/gtk-demo/glarea.c

@@ -390,7 +390,7 @@ create_glarea_window (GtkWidget *do_widget)
   int i;
 
   window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
-  gtk_window_set_screen (GTK_WINDOW (window), gtk_widget_get_screen (do_widget));
+  gtk_window_set_display (GTK_WINDOW (window),  gtk_widget_get_display (do_widget));
   gtk_window_set_title (GTK_WINDOW (window), "OpenGL Area");
   gtk_window_set_default_size (GTK_WINDOW (window), 400, 600);
   g_signal_connect (window, "destroy", G_CALLBACK (close_window), NULL);

demos/gtk-demo/gtkfishbowl.c

@@ -24,13 +24,18 @@ typedef struct _GtkFishbowlChild         GtkFishbowlChild;
 
 struct _GtkFishbowlPrivate
 {
+  GtkFishCreationFunc creation_func;
   GList *children;
   guint count;
 
   gint64 last_frame_time;
+  gint64 update_delay;
   guint tick_id;
 
-  guint use_icons: 1;
+  double framerate;
+  int last_benchmark_change;
+
+  guint benchmark : 1;
 };
 
 struct _GtkFishbowlChild
@@ -45,18 +50,25 @@ struct _GtkFishbowlChild
 enum {
    PROP_0,
    PROP_ANIMATING,
+   PROP_BENCHMARK,
    PROP_COUNT,
+   PROP_FRAMERATE,
+   PROP_UPDATE_DELAY,
    NUM_PROPERTIES
 };
 
 static GParamSpec *props[NUM_PROPERTIES] = { NULL, };
 
-G_DEFINE_TYPE_WITH_PRIVATE (GtkFishbowl, gtk_fishbowl, GTK_TYPE_CONTAINER)
+G_DEFINE_TYPE_WITH_PRIVATE (GtkFishbowl, gtk_fishbowl, GTK_TYPE_WIDGET)
 
 static void
 gtk_fishbowl_init (GtkFishbowl *fishbowl)
 {
-  gtk_widget_set_has_window (GTK_WIDGET (fishbowl), FALSE);
+  GtkFishbowlPrivate *priv = gtk_fishbowl_get_instance_private (fishbowl);
+
+  gtk_widget_set_has_surface (GTK_WIDGET (fishbowl), FALSE);
+
+  priv->update_delay = G_USEC_PER_SEC;
 }
 
 /**
@@ -72,15 +84,6 @@ gtk_fishbowl_new (void)
   return g_object_new (GTK_TYPE_FISHBOWL, NULL);
 }
 
-void
-gtk_fishbowl_set_use_icons (GtkFishbowl *fishbowl,
-                            gboolean     use_icons)
-{
-  GtkFishbowlPrivate *priv = gtk_fishbowl_get_instance_private (fishbowl);
-
-  priv->use_icons = use_icons;
-}
-
 static void
 gtk_fishbowl_measure (GtkWidget      *widget,
                       GtkOrientation  orientation,
@@ -106,7 +109,18 @@ gtk_fishbowl_measure (GtkWidget      *widget,
       if (!gtk_widget_get_visible (child->widget))
         continue;
 
-      gtk_widget_measure (child->widget, orientation, -1, &child_min, &child_nat, NULL, NULL);
+
+      if (orientation == GTK_ORIENTATION_HORIZONTAL)
+        {
+          gtk_widget_measure (child->widget, orientation, -1, &child_min, &child_nat, NULL, NULL);
+        }
+      else
+        {
+          int min_width;
+
+          gtk_widget_measure (child->widget, GTK_ORIENTATION_HORIZONTAL, -1, &min_width, NULL, NULL, NULL);
+          gtk_widget_measure (child->widget, orientation, min_width, &child_min, &child_nat, NULL, NULL);
+        }
 
       *minimum = MAX (*minimum, child_min);
       *natural = MAX (*natural, child_nat);
@@ -114,10 +128,10 @@ gtk_fishbowl_measure (GtkWidget      *widget,
 }
 
 static void
-gtk_fishbowl_size_allocate (GtkWidget           *widget,
-                            const GtkAllocation *allocation,
-                            int                  baseline,
-                            GtkAllocation       *out_clip)
+gtk_fishbowl_size_allocate (GtkWidget *widget,
+                            int        width,
+                            int        height,
+                            int        baseline)
 {
   GtkFishbowl *fishbowl = GTK_FISHBOWL (widget);
   GtkFishbowlPrivate *priv = gtk_fishbowl_get_instance_private (fishbowl);
@@ -128,20 +142,18 @@ gtk_fishbowl_size_allocate (GtkWidget           *widget,
 
   for (children = priv->children; children; children = children->next)
     {
-      GtkAllocation child_clip;
-
       child = children->data;
 
       if (!gtk_widget_get_visible (child->widget))
         continue;
 
       gtk_widget_get_preferred_size (child->widget, &child_requisition, NULL);
-      child_allocation.x = allocation->x + round (child->x * (allocation->width - child_requisition.width));
-      child_allocation.y = allocation->y + round (child->y * (allocation->height - child_requisition.height));
+      child_allocation.x = round (child->x * (width - child_requisition.width));
+      child_allocation.y = round (child->y * (height - child_requisition.height));
       child_allocation.width = child_requisition.width;
       child_allocation.height = child_requisition.height;
 
-      gtk_widget_size_allocate (child->widget, &child_allocation, -1, &child_clip);
+      gtk_widget_size_allocate (child->widget, &child_allocation, -1);
     }
 }
 
@@ -153,10 +165,9 @@ new_speed (void)
 }
 
 static void
-gtk_fishbowl_add (GtkContainer *container,
-                  GtkWidget    *widget)
+gtk_fishbowl_add (GtkFishbowl *fishbowl,
+                  GtkWidget   *widget)
 {
-  GtkFishbowl *fishbowl = GTK_FISHBOWL (container);
   GtkFishbowlPrivate *priv = gtk_fishbowl_get_instance_private (fishbowl);
   GtkFishbowlChild *child_info;
 
@@ -178,13 +189,12 @@ gtk_fishbowl_add (GtkContainer *container,
 }
 
 static void
-gtk_fishbowl_remove (GtkContainer *container,
-                     GtkWidget    *widget)
+gtk_fishbowl_remove (GtkFishbowl *fishbowl,
+                     GtkWidget   *widget)
 {
-  GtkFishbowl *fishbowl = GTK_FISHBOWL (container);
   GtkFishbowlPrivate *priv = gtk_fishbowl_get_instance_private (fishbowl);
   GtkFishbowlChild *child;
-  GtkWidget *widget_container = GTK_WIDGET (container);
+  GtkWidget *widget_bowl = GTK_WIDGET (fishbowl);
   GList *children;
 
   for (children = priv->children; children; children = children->next)
@@ -201,8 +211,8 @@ gtk_fishbowl_remove (GtkContainer *container,
           g_list_free (children);
           g_free (child);
 
-          if (was_visible && gtk_widget_get_visible (widget_container))
-            gtk_widget_queue_resize (widget_container);
+          if (was_visible && gtk_widget_get_visible (widget_bowl))
+            gtk_widget_queue_resize (widget_bowl);
 
           priv->count--;
           g_object_notify_by_pspec (G_OBJECT (fishbowl), props[PROP_COUNT]);
@@ -211,26 +221,6 @@ gtk_fishbowl_remove (GtkContainer *container,
     }
 }
 
-static void
-gtk_fishbowl_forall (GtkContainer *container,
-                     GtkCallback   callback,
-                     gpointer      callback_data)
-{
-  GtkFishbowl *fishbowl = GTK_FISHBOWL (container);
-  GtkFishbowlPrivate *priv = gtk_fishbowl_get_instance_private (fishbowl);
-  GtkFishbowlChild *child;
-  GList *children;
-
-  children = priv->children;
-  while (children)
-    {
-      child = children->data;
-      children = children->next;
-
-      (* callback) (child->widget, callback_data);
-    }
-}
-
 static void
 gtk_fishbowl_dispose (GObject *object)
 {
@@ -256,10 +246,18 @@ gtk_fishbowl_set_property (GObject         *object,
       gtk_fishbowl_set_animating (fishbowl, g_value_get_boolean (value));
       break;
 
+    case PROP_BENCHMARK:
+      gtk_fishbowl_set_benchmark (fishbowl, g_value_get_boolean (value));
+      break;
+
     case PROP_COUNT:
       gtk_fishbowl_set_count (fishbowl, g_value_get_uint (value));
       break;
 
+    case PROP_UPDATE_DELAY:
+      gtk_fishbowl_set_update_delay (fishbowl, g_value_get_int64 (value));
+      break;
+
     default:
       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
       break;
@@ -280,10 +278,22 @@ gtk_fishbowl_get_property (GObject         *object,
       g_value_set_boolean (value, gtk_fishbowl_get_animating (fishbowl));
       break;
 
+    case PROP_BENCHMARK:
+      g_value_set_boolean (value, gtk_fishbowl_get_benchmark (fishbowl));
+      break;
+
     case PROP_COUNT:
       g_value_set_uint (value, gtk_fishbowl_get_count (fishbowl));
       break;
 
+    case PROP_FRAMERATE:
+      g_value_set_double (value, gtk_fishbowl_get_framerate (fishbowl));
+      break;
+
+    case PROP_UPDATE_DELAY:
+      g_value_set_int64 (value, gtk_fishbowl_get_update_delay (fishbowl));
+      break;
+
     default:
       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
       break;
@@ -295,7 +305,6 @@ gtk_fishbowl_class_init (GtkFishbowlClass *klass)
 {
   GObjectClass *object_class = G_OBJECT_CLASS (klass);
   GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
-  GtkContainerClass *container_class = GTK_CONTAINER_CLASS (klass);
 
   object_class->dispose = gtk_fishbowl_dispose;
   object_class->set_property = gtk_fishbowl_set_property;
@@ -304,10 +313,6 @@ gtk_fishbowl_class_init (GtkFishbowlClass *klass)
   widget_class->measure = gtk_fishbowl_measure;
   widget_class->size_allocate = gtk_fishbowl_size_allocate;
 
-  container_class->add = gtk_fishbowl_add;
-  container_class->remove = gtk_fishbowl_remove;
-  container_class->forall = gtk_fishbowl_forall;
-
   props[PROP_ANIMATING] =
       g_param_spec_boolean ("animating",
                             "animating",
@@ -315,13 +320,36 @@ gtk_fishbowl_class_init (GtkFishbowlClass *klass)
                             FALSE,
                             G_PARAM_READWRITE);
 
+  props[PROP_BENCHMARK] =
+      g_param_spec_boolean ("benchmark",
+                            "Benchmark",
+                            "Adapt the count property to hit the maximum framerate",
+                            FALSE,
+                            G_PARAM_READWRITE);
+
   props[PROP_COUNT] =
       g_param_spec_uint ("count",
                          "Count",
                          "Number of widgets",
                          0, G_MAXUINT,
                          0,
-                         G_PARAM_READABLE);
+                         G_PARAM_READWRITE);
+
+  props[PROP_FRAMERATE] =
+      g_param_spec_double ("framerate",
+                           "Framerate",
+                           "Framerate of this widget in frames per second",
+                           0, G_MAXDOUBLE,
+                           0,
+                           G_PARAM_READABLE);
+
+  props[PROP_UPDATE_DELAY] =
+      g_param_spec_int64 ("update-delay",
+                          "Update delay",
+                          "Number of usecs between updates",
+                          0, G_MAXINT64,
+                          G_USEC_PER_SEC,
+                          G_PARAM_READWRITE);
 
   g_object_class_install_properties (object_class, NUM_PROPERTIES, props);
 }
@@ -334,94 +362,58 @@ gtk_fishbowl_get_count (GtkFishbowl *fishbowl)
   return priv->count;
 }
 
-char **icon_names = NULL;
-gsize n_icon_names = 0;
-
-static void
-init_icon_names (GtkIconTheme *theme)
-{
-  GPtrArray *icons;
-  GList *l, *icon_list;
-
-  if (icon_names)
-    return;
-
-  icon_list = gtk_icon_theme_list_icons (theme, NULL);
-  icons = g_ptr_array_new ();
-
-  for (l = icon_list; l; l = l->next)
-    {
-      if (g_str_has_suffix (l->data, "symbolic"))
-        continue;
-
-      g_ptr_array_add (icons, g_strdup (l->data));
-    }
-
-  n_icon_names = icons->len;
-  g_ptr_array_add (icons, NULL); /* NULL-terminate the array */
-  icon_names = (char **) g_ptr_array_free (icons, FALSE);
-
-  /* don't free strings, we assigned them to the array */
-  g_list_free_full (icon_list, g_free);
-}
-
-static const char *
-get_random_icon_name (GtkIconTheme *theme)
-{
-  init_icon_names (theme);
-
-  return icon_names[g_random_int_range(0, n_icon_names)];
-}
-
-static GType
-get_random_widget_type ()
-{
-  GType types[] = {
-    GTK_TYPE_SWITCH,
-    GTK_TYPE_BUTTON,
-    GTK_TYPE_ENTRY,
-    GTK_TYPE_SPIN_BUTTON,
-    GTK_TYPE_FONT_BUTTON,
-    GTK_TYPE_SCROLLBAR,
-    GTK_TYPE_SCALE,
-    GTK_TYPE_LEVEL_BAR,
-    GTK_TYPE_PROGRESS_BAR,
-    GTK_TYPE_RADIO_BUTTON,
-    GTK_TYPE_CHECK_BUTTON
-  };
-  return types[g_random_int_range (0, G_N_ELEMENTS (types))];
-}
-
 void
 gtk_fishbowl_set_count (GtkFishbowl *fishbowl,
                         guint        count)
 {
   GtkFishbowlPrivate *priv = gtk_fishbowl_get_instance_private (fishbowl);
 
+  if (priv->count == count)
+    return;
+
   g_object_freeze_notify (G_OBJECT (fishbowl));
 
   while (priv->count > count)
     {
-      gtk_container_remove (GTK_CONTAINER (fishbowl),
-                            ((GtkFishbowlChild *) priv->children->data)->widget);
+      gtk_fishbowl_remove (fishbowl, gtk_widget_get_first_child (GTK_WIDGET (fishbowl)));
     }
 
   while (priv->count < count)
     {
       GtkWidget *new_widget;
 
-      if (priv->use_icons)
-        new_widget = gtk_image_new_from_icon_name (get_random_icon_name (gtk_icon_theme_get_default ()),
-                                                   GTK_ICON_SIZE_DIALOG);
-      else
-        new_widget = g_object_new (get_random_widget_type (), NULL);
+      new_widget = priv->creation_func ();
 
-      gtk_container_add (GTK_CONTAINER (fishbowl), new_widget);
+      gtk_fishbowl_add (fishbowl, new_widget);
     }
 
   g_object_thaw_notify (G_OBJECT (fishbowl));
 }
 
+gboolean
+gtk_fishbowl_get_benchmark (GtkFishbowl *fishbowl)
+{
+  GtkFishbowlPrivate *priv = gtk_fishbowl_get_instance_private (fishbowl);
+
+  return priv->benchmark;
+}
+
+void
+gtk_fishbowl_set_benchmark (GtkFishbowl *fishbowl,
+                            gboolean     benchmark)
+{
+  GtkFishbowlPrivate *priv = gtk_fishbowl_get_instance_private (fishbowl);
+
+  if (priv->benchmark == benchmark)
+    return;
+
+  priv->benchmark = benchmark;
+  if (!benchmark)
+    priv->last_benchmark_change = 0;
+
+  g_object_notify_by_pspec (G_OBJECT (fishbowl), props[PROP_BENCHMARK]);
+}
+
 gboolean
 gtk_fishbowl_get_animating (GtkFishbowl *fishbowl)
 {
@@ -430,6 +422,111 @@ gtk_fishbowl_get_animating (GtkFishbowl *fishbowl)
   return priv->tick_id != 0;
 }
 
+static gint64
+guess_refresh_interval (GdkFrameClock *frame_clock)
+{
+  gint64 interval;
+  gint64 i;
+
+  interval = G_MAXINT64;
+
+  for (i = gdk_frame_clock_get_history_start (frame_clock);
+       i < gdk_frame_clock_get_frame_counter (frame_clock);
+       i++)
+    {
+      GdkFrameTimings *t, *before;
+      gint64 ts, before_ts;
+
+      t = gdk_frame_clock_get_timings (frame_clock, i);
+      before = gdk_frame_clock_get_timings (frame_clock, i - 1);
+      if (t == NULL || before == NULL)
+        continue;
+
+      ts = gdk_frame_timings_get_frame_time (t);
+      before_ts = gdk_frame_timings_get_frame_time (before);
+      if (ts == 0 || before_ts == 0)
+        continue;
+
+      interval = MIN (interval, ts - before_ts);
+    }
+
+  if (interval == G_MAXINT64)
+    return 0;
+
+  return interval;
+}
+
+static void
+gtk_fishbowl_do_update (GtkFishbowl *fishbowl)
+{
+  GtkFishbowlPrivate *priv = gtk_fishbowl_get_instance_private (fishbowl);
+  GdkFrameClock *frame_clock;
+  GdkFrameTimings *start, *end;
+  gint64 start_counter, end_counter;
+  gint64 n_frames, expected_frames;
+  gint64 start_timestamp, end_timestamp;
+  gint64 interval;
+
+  frame_clock = gtk_widget_get_frame_clock (GTK_WIDGET (fishbowl));
+  if (frame_clock == NULL)
+    return;
+
+  start_counter = gdk_frame_clock_get_history_start (frame_clock);
+  end_counter = gdk_frame_clock_get_frame_counter (frame_clock);
+  start = gdk_frame_clock_get_timings (frame_clock, start_counter);
+  for (end = gdk_frame_clock_get_timings (frame_clock, end_counter);
+       end_counter > start_counter && end != NULL && !gdk_frame_timings_get_complete (end);
+       end = gdk_frame_clock_get_timings (frame_clock, end_counter))
+    end_counter--;
+  if (end_counter - start_counter < 4)
+    return;
+
+  start_timestamp = gdk_frame_timings_get_presentation_time (start);
+  end_timestamp = gdk_frame_timings_get_presentation_time (end);
+  if (start_timestamp == 0 || end_timestamp == 0)
+    {
+      start_timestamp = gdk_frame_timings_get_frame_time (start);
+      end_timestamp = gdk_frame_timings_get_frame_time (end);
+    }
+
+  n_frames = end_counter - start_counter;
+  priv->framerate = ((double) n_frames) * G_USEC_PER_SEC / (end_timestamp - start_timestamp);
+  g_object_notify_by_pspec (G_OBJECT (fishbowl), props[PROP_FRAMERATE]);
+
+  if (!priv->benchmark)
+    return;
+
+  interval = gdk_frame_timings_get_refresh_interval (end);
+  if (interval == 0)
+    {
+      interval = guess_refresh_interval (frame_clock);
+      if (interval == 0)
+        return;
+    }
+  expected_frames = round ((double) (end_timestamp - start_timestamp) / interval);
+
+  if (n_frames >= expected_frames)
+    {
+      if (priv->last_benchmark_change > 0)
+        priv->last_benchmark_change *= 2;
+      else
+        priv->last_benchmark_change = 1;
+    }
+  else if (n_frames + 1 < expected_frames)
+    {
+      if (priv->last_benchmark_change < 0)
+        priv->last_benchmark_change--;
+      else
+        priv->last_benchmark_change = -1;
+    }
+  else
+    {
+      priv->last_benchmark_change = 0;
+    }
+
+  gtk_fishbowl_set_count (fishbowl, MAX (1, (int) priv->count + priv->last_benchmark_change));
+}
+
 static gboolean
 gtk_fishbowl_tick (GtkWidget     *widget,
                    GdkFrameClock *frame_clock,
@@ -440,9 +537,11 @@ gtk_fishbowl_tick (GtkWidget     *widget,
   GtkFishbowlChild *child;
   GList *l;
   gint64 frame_time, elapsed;
+  gboolean do_update;
 
   frame_time = gdk_frame_clock_get_frame_time (gtk_widget_get_frame_clock (widget));
   elapsed = frame_time - priv->last_frame_time;
+  do_update = frame_time / priv->update_delay != priv->last_frame_time / priv->update_delay;
   priv->last_frame_time = frame_time;
 
   /* last frame was 0, so we're just starting to animate */
@@ -481,6 +580,9 @@ gtk_fishbowl_tick (GtkWidget     *widget,
 
   gtk_widget_queue_allocate (widget);
 
+  if (do_update)
+    gtk_fishbowl_do_update (fishbowl);
+
   return G_SOURCE_CONTINUE;
 }
 
@@ -505,8 +607,57 @@ gtk_fishbowl_set_animating (GtkFishbowl *fishbowl,
       priv->last_frame_time = 0;
       gtk_widget_remove_tick_callback (GTK_WIDGET (fishbowl), priv->tick_id);
       priv->tick_id = 0;
+      priv->framerate = 0;
+      g_object_notify_by_pspec (G_OBJECT (fishbowl), props[PROP_FRAMERATE]);
     }
 
   g_object_notify_by_pspec (G_OBJECT (fishbowl), props[PROP_ANIMATING]);
 }
 
+double
+gtk_fishbowl_get_framerate (GtkFishbowl *fishbowl)
+{
+  GtkFishbowlPrivate *priv = gtk_fishbowl_get_instance_private (fishbowl);
+
+  return priv->framerate;
+}
+
+gint64
+gtk_fishbowl_get_update_delay (GtkFishbowl *fishbowl)
+{
+  GtkFishbowlPrivate *priv = gtk_fishbowl_get_instance_private (fishbowl);
+
+  return priv->update_delay;
+}
+
+void
+gtk_fishbowl_set_update_delay (GtkFishbowl *fishbowl,
+                               gint64       update_delay)
+{
+  GtkFishbowlPrivate *priv = gtk_fishbowl_get_instance_private (fishbowl);
+
+  if (priv->update_delay == update_delay)
+    return;
+
+  priv->update_delay = update_delay;
+
+  g_object_notify_by_pspec (G_OBJECT (fishbowl), props[PROP_UPDATE_DELAY]);
+}
+
+void
+gtk_fishbowl_set_creation_func (GtkFishbowl         *fishbowl,
+                                GtkFishCreationFunc  creation_func)
+{
+  GtkFishbowlPrivate *priv = gtk_fishbowl_get_instance_private (fishbowl);
+
+  g_object_freeze_notify (G_OBJECT (fishbowl));
+
+  gtk_fishbowl_set_count (fishbowl, 0);
+  priv->last_benchmark_change = 0;
+
+  priv->creation_func = creation_func;
+
+  gtk_fishbowl_set_count (fishbowl, 1);
+
+  g_object_thaw_notify (G_OBJECT (fishbowl));
+}

demos/gtk-demo/gtkfishbowl.h

@@ -32,29 +32,37 @@ G_BEGIN_DECLS
 typedef struct _GtkFishbowl              GtkFishbowl;
 typedef struct _GtkFishbowlClass         GtkFishbowlClass;
 
+typedef GtkWidget * (* GtkFishCreationFunc) (void);
+
 struct _GtkFishbowl
 {
-  GtkContainer container;
+  GtkWidget parent;
 };
 
 struct _GtkFishbowlClass
 {
-  GtkContainerClass parent_class;
+  GtkWidgetClass parent_class;
 };
 
 GType      gtk_fishbowl_get_type          (void) G_GNUC_CONST;
 
 GtkWidget* gtk_fishbowl_new               (void);
 
-void       gtk_fishbowl_set_use_icons     (GtkFishbowl       *fishbowl,
-                                           gboolean           use_icons);
-
 guint      gtk_fishbowl_get_count         (GtkFishbowl       *fishbowl);
 void       gtk_fishbowl_set_count         (GtkFishbowl       *fishbowl,
                                            guint              count);
 gboolean   gtk_fishbowl_get_animating     (GtkFishbowl       *fishbowl);
 void       gtk_fishbowl_set_animating     (GtkFishbowl       *fishbowl,
                                            gboolean           animating);
+gboolean   gtk_fishbowl_get_benchmark     (GtkFishbowl       *fishbowl);
+void       gtk_fishbowl_set_benchmark     (GtkFishbowl       *fishbowl,
+                                           gboolean           animating);
+double     gtk_fishbowl_get_framerate     (GtkFishbowl       *fishbowl);
+gint64     gtk_fishbowl_get_update_delay  (GtkFishbowl       *fishbowl);
+void       gtk_fishbowl_set_update_delay  (GtkFishbowl       *fishbowl,
+                                           gint64             update_delay);
+void       gtk_fishbowl_set_creation_func (GtkFishbowl       *fishbowl,
+                                           GtkFishCreationFunc creation_func);
 
 G_END_DECLS
 

demos/gtk-demo/gtkgears.c

@@ -0,0 +1,960 @@
+/* The rendering code in here is taken from es2gears, which has the
+ * following copyright notice:
+ *
+ * Copyright (C) 1999-2001  Brian Paul   All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Ported to GLES2.
+ * Kristian Høgsberg <krh@bitplanet.net>
+ * May 3, 2010
+ *
+ * Improve GLES2 port:
+ *   * Refactor gear drawing.
+ *   * Use correct normals for surfaces.
+ *   * Improve shader.
+ *   * Use perspective projection transformation.
+ *   * Add FPS count.
+ *   * Add comments.
+ * Alexandros Frantzis <alexandros.frantzis@linaro.org>
+ * Jul 13, 2010
+ */
+
+#include "config.h"
+
+#include <math.h>
+#include <stdlib.h>
+#include <string.h>
+#include <epoxy/gl.h>
+
+#include "gtkgears.h"
+
+#define STRIPS_PER_TOOTH 7
+#define VERTICES_PER_TOOTH 34
+#define GEAR_VERTEX_STRIDE 6
+
+#ifndef HAVE_SINCOS
+static void
+sincos (double x, double *_sin, double *_cos)
+{
+  *_sin = sin (x);
+  *_cos = cos (x);
+}
+#endif
+
+/**
+ * Struct describing the vertices in triangle strip
+ */
+struct vertex_strip {
+   /** The first vertex in the strip */
+   GLint first;
+   /** The number of consecutive vertices in the strip after the first */
+   GLint count;
+};
+
+/* Each vertex consist of GEAR_VERTEX_STRIDE GLfloat attributes */
+typedef GLfloat GearVertex[GEAR_VERTEX_STRIDE];
+
+/**
+ * Struct representing a gear.
+ */
+struct gear {
+   /** The array of vertices comprising the gear */
+   GearVertex *vertices;
+   /** The number of vertices comprising the gear */
+   int nvertices;
+   /** The array of triangle strips comprising the gear */
+   struct vertex_strip *strips;
+   /** The number of triangle strips comprising the gear */
+   int nstrips;
+};
+
+typedef struct {
+  /* The view rotation [x, y, z] */
+  GLfloat view_rot[GTK_GEARS_N_AXIS];
+
+  /* The Vertex Array Object */
+  GLuint vao;
+
+  /* The shader program */
+  GLuint program;
+
+  /* The gears */
+  struct gear *gear1;
+  struct gear *gear2;
+  struct gear *gear3;
+
+  /** The Vertex Buffer Object holding the vertices in the graphics card */
+  GLuint gear_vbo[3];
+
+  /** The location of the shader uniforms */
+  GLuint ModelViewProjectionMatrix_location;
+  GLuint NormalMatrix_location;
+  GLuint LightSourcePosition_location;
+  GLuint MaterialColor_location;
+
+  /* The current gear rotation angle */
+  GLfloat angle;
+
+  /* The projection matrix */
+  GLfloat ProjectionMatrix[16];
+
+  /* The direction of the directional light for the scene */
+  GLfloat LightSourcePosition[4];
+
+  gint64 first_frame_time;
+  guint tick;
+  GtkLabel *fps_label;
+} GtkGearsPrivate;
+
+G_DEFINE_TYPE_WITH_PRIVATE (GtkGears, gtk_gears, GTK_TYPE_GL_AREA)
+
+static gboolean gtk_gears_render        (GtkGLArea     *area,
+                                         GdkGLContext  *context);
+static void     gtk_gears_reshape       (GtkGLArea     *area,
+                                         int            width,
+                                         int            height);
+static void     gtk_gears_realize       (GtkWidget     *widget);
+static void     gtk_gears_unrealize     (GtkWidget     *widget);
+static gboolean gtk_gears_tick          (GtkWidget     *widget,
+                                         GdkFrameClock *frame_clock,
+                                         gpointer       user_data);
+
+static void destroy_gear (struct gear *g);
+
+GtkWidget *
+gtk_gears_new (void)
+{
+  return g_object_new (gtk_gears_get_type (),
+                       "has-depth-buffer", TRUE,
+                       NULL);
+}
+
+static void
+gtk_gears_init (GtkGears *gears)
+{
+  GtkGearsPrivate *priv = gtk_gears_get_instance_private (gears);
+
+  priv->view_rot[GTK_GEARS_X_AXIS] = 20.0;
+  priv->view_rot[GTK_GEARS_Y_AXIS] = 30.0;
+  priv->view_rot[GTK_GEARS_Z_AXIS] = 20.0;
+
+  priv->LightSourcePosition[0] = 5.0;
+  priv->LightSourcePosition[1] = 5.0;
+  priv->LightSourcePosition[2] = 10.0;
+  priv->LightSourcePosition[3] = 1.0;
+
+  priv->tick = gtk_widget_add_tick_callback (GTK_WIDGET (gears), gtk_gears_tick, gears, NULL);
+}
+
+static void
+gtk_gears_finalize (GObject *obj)
+{
+  GtkGears *gears = GTK_GEARS (obj);
+  GtkGearsPrivate *priv = gtk_gears_get_instance_private (gears);
+
+  gtk_widget_remove_tick_callback (GTK_WIDGET (gears), priv->tick);
+
+  g_clear_object (&priv->fps_label);
+
+  g_clear_pointer (&priv->gear1, destroy_gear);
+  g_clear_pointer (&priv->gear2, destroy_gear);
+  g_clear_pointer (&priv->gear3, destroy_gear);
+
+  G_OBJECT_CLASS (gtk_gears_parent_class)->finalize (obj);
+}
+
+static void
+gtk_gears_class_init (GtkGearsClass *klass)
+{
+  GTK_GL_AREA_CLASS (klass)->render = gtk_gears_render;
+  GTK_GL_AREA_CLASS (klass)->resize = gtk_gears_reshape;
+
+  GTK_WIDGET_CLASS (klass)->realize = gtk_gears_realize;
+  GTK_WIDGET_CLASS (klass)->unrealize = gtk_gears_unrealize;
+
+  G_OBJECT_CLASS (klass)->finalize = gtk_gears_finalize;
+}
+
+/*
+ * Fills a gear vertex.
+ *
+ * @param v the vertex to fill
+ * @param x the x coordinate
+ * @param y the y coordinate
+ * @param z the z coortinate
+ * @param n pointer to the normal table
+ *
+ * @return the operation error code
+ */
+static GearVertex *
+vert (GearVertex *v,
+      GLfloat x,
+      GLfloat y,
+      GLfloat z,
+      GLfloat n[3])
+{
+  v[0][0] = x;
+  v[0][1] = y;
+  v[0][2] = z;
+  v[0][3] = n[0];
+  v[0][4] = n[1];
+  v[0][5] = n[2];
+
+  return v + 1;
+}
+
+static void
+destroy_gear (struct gear *g)
+{
+  g_free (g->strips);
+  g_free (g);
+}
+
+/**
+ *  Create a gear wheel.
+ *
+ *  @param inner_radius radius of hole at center
+ *  @param outer_radius radius at center of teeth
+ *  @param width width of gear
+ *  @param teeth number of teeth
+ *  @param tooth_depth depth of tooth
+ *
+ *  @return pointer to the constructed struct gear
+ */
+static struct gear *
+create_gear (GLfloat inner_radius,
+             GLfloat outer_radius,
+             GLfloat width,
+             GLint teeth,
+             GLfloat tooth_depth)
+{
+  GLfloat r0, r1, r2;
+  GLfloat da;
+  GearVertex *v;
+  struct gear *gear;
+  double s[5], c[5];
+  GLfloat normal[3];
+  int cur_strip = 0;
+  int i;
+
+  /* Allocate memory for the gear */
+  gear = g_malloc (sizeof *gear);
+
+  /* Calculate the radii used in the gear */
+  r0 = inner_radius;
+  r1 = outer_radius - tooth_depth / 2.0;
+  r2 = outer_radius + tooth_depth / 2.0;
+
+  da = 2.0 * M_PI / teeth / 4.0;
+
+  /* Allocate memory for the triangle strip information */
+  gear->nstrips = STRIPS_PER_TOOTH * teeth;
+  gear->strips = g_malloc0_n (gear->nstrips, sizeof (*gear->strips));
+
+  /* Allocate memory for the vertices */
+  gear->vertices = g_malloc0_n (VERTICES_PER_TOOTH * teeth, sizeof(*gear->vertices));
+  v = gear->vertices;
+
+  for (i = 0; i < teeth; i++) {
+    /* A set of macros for making the creation of the gears easier */
+#define  GEAR_POINT(p, r, da) do { p.x = (r) * c[(da)]; p.y = (r) * s[(da)]; } while(0)
+#define  SET_NORMAL(x, y, z) do { \
+   normal[0] = (x); normal[1] = (y); normal[2] = (z); \
+} while(0)
+
+#define  GEAR_VERT(v, point, sign) vert((v), p[(point)].x, p[(point)].y, (sign) * width * 0.5, normal)
+
+#define START_STRIP do { \
+   gear->strips[cur_strip].first = v - gear->vertices; \
+} while(0);
+
+#define END_STRIP do { \
+   int _tmp = (v - gear->vertices); \
+   gear->strips[cur_strip].count = _tmp - gear->strips[cur_strip].first; \
+   cur_strip++; \
+} while (0)
+
+#define QUAD_WITH_NORMAL(p1, p2) do { \
+   SET_NORMAL((p[(p1)].y - p[(p2)].y), -(p[(p1)].x - p[(p2)].x), 0); \
+   v = GEAR_VERT(v, (p1), -1); \
+   v = GEAR_VERT(v, (p1), 1); \
+   v = GEAR_VERT(v, (p2), -1); \
+   v = GEAR_VERT(v, (p2), 1); \
+} while(0)
+    struct point {
+      GLfloat x;
+      GLfloat y;
+    };
+
+    /* Create the 7 points (only x,y coords) used to draw a tooth */
+    struct point p[7];
+
+    /* Calculate needed sin/cos for varius angles */
+    sincos(i * 2.0 * G_PI / teeth + da * 0, &s[0], &c[0]);
+    sincos(i * 2.0 * M_PI / teeth + da * 1, &s[1], &c[1]);
+    sincos(i * 2.0 * M_PI / teeth + da * 2, &s[2], &c[2]);
+    sincos(i * 2.0 * M_PI / teeth + da * 3, &s[3], &c[3]);
+    sincos(i * 2.0 * M_PI / teeth + da * 4, &s[4], &c[4]);
+
+    GEAR_POINT(p[0], r2, 1);
+    GEAR_POINT(p[1], r2, 2);
+    GEAR_POINT(p[2], r1, 0);
+    GEAR_POINT(p[3], r1, 3);
+    GEAR_POINT(p[4], r0, 0);
+    GEAR_POINT(p[5], r1, 4);
+    GEAR_POINT(p[6], r0, 4);
+
+    /* Front face */
+    START_STRIP;
+    SET_NORMAL(0, 0, 1.0);
+    v = GEAR_VERT(v, 0, +1);
+    v = GEAR_VERT(v, 1, +1);
+    v = GEAR_VERT(v, 2, +1);
+    v = GEAR_VERT(v, 3, +1);
+    v = GEAR_VERT(v, 4, +1);
+    v = GEAR_VERT(v, 5, +1);
+    v = GEAR_VERT(v, 6, +1);
+    END_STRIP;
+
+    /* Inner face */
+    START_STRIP;
+    QUAD_WITH_NORMAL(4, 6);
+    END_STRIP;
+
+    /* Back face */
+    START_STRIP;
+    SET_NORMAL(0, 0, -1.0);
+    v = GEAR_VERT(v, 6, -1);
+    v = GEAR_VERT(v, 5, -1);
+    v = GEAR_VERT(v, 4, -1);
+    v = GEAR_VERT(v, 3, -1);
+    v = GEAR_VERT(v, 2, -1);
+    v = GEAR_VERT(v, 1, -1);
+    v = GEAR_VERT(v, 0, -1);
+    END_STRIP;
+
+    /* Outer face */
+    START_STRIP;
+    QUAD_WITH_NORMAL(0, 2);
+    END_STRIP;
+
+    START_STRIP;
+    QUAD_WITH_NORMAL(1, 0);
+    END_STRIP;
+
+    START_STRIP;
+    QUAD_WITH_NORMAL(3, 1);
+    END_STRIP;
+
+    START_STRIP;
+    QUAD_WITH_NORMAL(5, 3);
+    END_STRIP;
+  }
+
+  gear->nvertices = (v - gear->vertices);
+
+  return gear;
+}
+
+/** 
+ * Multiplies two 4x4 matrices.
+ *
+ * The result is stored in matrix m.
+ *
+ * @param m the first matrix to multiply
+ * @param n the second matrix to multiply
+ */
+static void
+multiply (GLfloat *m, const GLfloat *n)
+{
+   GLfloat tmp[16];
+   const GLfloat *row, *column;
+   div_t d;
+   int i, j;
+
+   for (i = 0; i < 16; i++) {
+      tmp[i] = 0;
+      d = div(i, 4);
+      row = n + d.quot * 4;
+      column = m + d.rem;
+      for (j = 0; j < 4; j++)
+         tmp[i] += row[j] * column[j * 4];
+   }
+   memcpy(m, &tmp, sizeof tmp);
+}
+
+/** 
+ * Rotates a 4x4 matrix.
+ *
+ * @param[in,out] m the matrix to rotate
+ * @param angle the angle to rotate
+ * @param x the x component of the direction to rotate to
+ * @param y the y component of the direction to rotate to
+ * @param z the z component of the direction to rotate to
+ */
+static void
+rotate(GLfloat *m, GLfloat angle, GLfloat x, GLfloat y, GLfloat z)
+{
+   double s = sin (angle);
+   double c = cos (angle);
+
+   GLfloat r[16] = {
+      x * x * (1 - c) + c,     y * x * (1 - c) + z * s, x * z * (1 - c) - y * s, 0,
+      x * y * (1 - c) - z * s, y * y * (1 - c) + c,     y * z * (1 - c) + x * s, 0,
+      x * z * (1 - c) + y * s, y * z * (1 - c) - x * s, z * z * (1 - c) + c,     0,
+      0, 0, 0, 1
+   };
+
+   multiply(m, r);
+}
+
+/** 
+ * Translates a 4x4 matrix.
+ * 
+ * @param[in,out] m the matrix to translate
+ * @param x the x component of the direction to translate to
+ * @param y the y component of the direction to translate to
+ * @param z the z component of the direction to translate to
+ */
+static void
+translate(GLfloat *m, GLfloat x, GLfloat y, GLfloat z)
+{
+   GLfloat t[16] = { 1, 0, 0, 0,  0, 1, 0, 0,  0, 0, 1, 0,  x, y, z, 1 };
+
+   multiply(m, t);
+}
+
+/** 
+ * Creates an identity 4x4 matrix.
+ * 
+ * @param m the matrix make an identity matrix
+ */
+static void
+identity(GLfloat *m)
+{
+   GLfloat t[16] = {
+      1.0, 0.0, 0.0, 0.0,
+      0.0, 1.0, 0.0, 0.0,
+      0.0, 0.0, 1.0, 0.0,
+      0.0, 0.0, 0.0, 1.0,
+   };
+
+   memcpy(m, t, sizeof(t));
+}
+
+/** 
+ * Transposes a 4x4 matrix.
+ *
+ * @param m the matrix to transpose
+ */
+static void
+transpose(GLfloat *m)
+{
+   GLfloat t[16] = {
+      m[0], m[4], m[8],  m[12],
+      m[1], m[5], m[9],  m[13],
+      m[2], m[6], m[10], m[14],
+      m[3], m[7], m[11], m[15]};
+
+   memcpy(m, t, sizeof(t));
+}
+
+/**
+ * Inverts a 4x4 matrix.
+ *
+ * This function can currently handle only pure translation-rotation matrices.
+ * Read http://www.gamedev.net/community/forums/topic.asp?topic_id=425118
+ * for an explanation.
+ */
+static void
+invert(GLfloat *m)
+{
+   GLfloat t[16];
+   identity(t);
+
+   // Extract and invert the translation part 't'. The inverse of a
+   // translation matrix can be calculated by negating the translation
+   // coordinates.
+   t[12] = -m[12]; t[13] = -m[13]; t[14] = -m[14];
+
+   // Invert the rotation part 'r'. The inverse of a rotation matrix is
+   // equal to its transpose.
+   m[12] = m[13] = m[14] = 0;
+   transpose(m);
+
+   // inv(m) = inv(r) * inv(t)
+   multiply(m, t);
+}
+
+/** 
+ * Calculate a perspective projection transformation.
+ * 
+ * @param m the matrix to save the transformation in
+ * @param fovy the field of view in the y direction
+ * @param aspect the view aspect ratio
+ * @param zNear the near clipping plane
+ * @param zFar the far clipping plane
+ */
+void perspective(GLfloat *m, GLfloat fovy, GLfloat aspect, GLfloat zNear, GLfloat zFar)
+{
+   GLfloat tmp[16];
+   double sine, cosine, cotangent, deltaZ;
+   GLfloat radians = fovy / 2 * M_PI / 180;
+   identity(tmp);
+
+   deltaZ = zFar - zNear;
+   sincos(radians, &sine, &cosine);
+
+   if ((deltaZ == 0) || (sine == 0) || (aspect == 0))
+      return;
+
+   cotangent = cosine / sine;
+
+   tmp[0] = cotangent / aspect;
+   tmp[5] = cotangent;
+   tmp[10] = -(zFar + zNear) / deltaZ;
+   tmp[11] = -1;
+   tmp[14] = -2 * zNear * zFar / deltaZ;
+   tmp[15] = 0;
+
+   memcpy(m, tmp, sizeof(tmp));
+}
+
+/**
+ * Draws a gear.
+ *
+ * @param gear the gear to draw
+ * @param transform the current transformation matrix
+ * @param x the x position to draw the gear at
+ * @param y the y position to draw the gear at
+ * @param angle the rotation angle of the gear
+ * @param color the color of the gear
+ */
+static void
+draw_gear(GtkGears *self,
+          struct gear *gear,
+          GLuint gear_vbo,
+          GLfloat *transform,
+          GLfloat x,
+          GLfloat y,
+          GLfloat angle,
+          const GLfloat color[4])
+{
+  GtkGearsPrivate *priv = gtk_gears_get_instance_private (self);
+  GLfloat model_view[16];
+  GLfloat normal_matrix[16];
+  GLfloat model_view_projection[16];
+  int n;
+
+  /* Translate and rotate the gear */
+  memcpy(model_view, transform, sizeof (model_view));
+  translate(model_view, x, y, 0);
+  rotate(model_view, 2 * G_PI * angle / 360.0, 0, 0, 1);
+
+  /* Create and set the ModelViewProjectionMatrix */
+  memcpy(model_view_projection, priv->ProjectionMatrix, sizeof(model_view_projection));
+  multiply(model_view_projection, model_view);
+
+  glUniformMatrix4fv(priv->ModelViewProjectionMatrix_location, 1, GL_FALSE,
+                     model_view_projection);
+
+  /* 
+   * Create and set the NormalMatrix. It's the inverse transpose of the
+   * ModelView matrix.
+   */
+  memcpy(normal_matrix, model_view, sizeof (normal_matrix));
+  invert(normal_matrix);
+  transpose(normal_matrix);
+  glUniformMatrix4fv(priv->NormalMatrix_location, 1, GL_FALSE, normal_matrix);
+
+  /* Set the gear color */
+  glUniform4fv(priv->MaterialColor_location, 1, color);
+
+  /* Set the vertex buffer object to use */
+  glBindBuffer(GL_ARRAY_BUFFER, gear_vbo);
+
+  /* Set up the position of the attributes in the vertex buffer object */
+  glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 6 * sizeof(GLfloat), NULL);
+  glVertexAttribPointer(1, 3, GL_FLOAT, GL_FALSE, 6 * sizeof(GLfloat), (GLfloat *) 0 + 3);
+
+  /* Enable the attributes */
+  glEnableVertexAttribArray(0);
+  glEnableVertexAttribArray(1);
+
+  /* Draw the triangle strips that comprise the gear */
+  for (n = 0; n < gear->nstrips; n++) {
+    glDrawArrays(GL_TRIANGLE_STRIP, gear->strips[n].first, gear->strips[n].count);
+  }
+
+  /* Disable the attributes */
+  glDisableVertexAttribArray(1);
+  glDisableVertexAttribArray(0);
+}
+
+/* new window size or exposure */
+static void
+gtk_gears_reshape (GtkGLArea *area, int width, int height)
+{
+  GtkGearsPrivate *priv = gtk_gears_get_instance_private ((GtkGears *) area);
+
+  /* Update the projection matrix */
+  perspective (priv->ProjectionMatrix, 60.0, width / (float)height, 1.0, 1024.0);
+
+  /* Set the viewport */
+  glViewport (0, 0, (GLint) width, (GLint) height);
+}
+
+static gboolean
+gtk_gears_render (GtkGLArea    *area,
+                  GdkGLContext *context)
+{
+  static const GLfloat red[4]   = { 0.8, 0.1, 0.0, 1.0 };
+  static const GLfloat green[4] = { 0.0, 0.8, 0.2, 1.0 };
+  static const GLfloat blue[4]  = { 0.2, 0.2, 1.0, 1.0 };
+
+  GtkGears *self = GTK_GEARS (area);
+  GtkGearsPrivate *priv = gtk_gears_get_instance_private (self);
+  GLfloat transform[16];
+
+  identity (transform);
+
+  glClearColor (0.0, 0.0, 0.0, 0.0);
+  glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+
+  /* Translate and rotate the view */
+  translate (transform, 0, 0, -20);
+  rotate (transform, 2 * G_PI * priv->view_rot[0] / 360.0, 1, 0, 0);
+  rotate (transform, 2 * G_PI * priv->view_rot[1] / 360.0, 0, 1, 0);
+  rotate (transform, 2 * G_PI * priv->view_rot[2] / 360.0, 0, 0, 1);
+
+  /* Draw the gears */
+  draw_gear (self, priv->gear1, priv->gear_vbo[0], transform, -3.0, -2.0,      priv->angle,        red);
+  draw_gear (self, priv->gear2, priv->gear_vbo[1], transform,  3.1, -2.0, -2 * priv->angle - 9.0,  green);
+  draw_gear (self, priv->gear3, priv->gear_vbo[2], transform, -3.1,  4.2, -2 * priv->angle - 25.0, blue);
+
+  return TRUE;
+}
+
+static const char vertex_shader_gl[] =
+"#version 150\n"
+"\n"
+"in vec3 position;\n"
+"in vec3 normal;\n"
+"\n"
+"uniform mat4 ModelViewProjectionMatrix;\n"
+"uniform mat4 NormalMatrix;\n"
+"uniform vec4 LightSourcePosition;\n"
+"uniform vec4 MaterialColor;\n"
+"\n"
+"smooth out vec4 Color;\n"
+"\n"
+"void main(void)\n"
+"{\n"
+"    // Transform the normal to eye coordinates\n"
+"    vec3 N = normalize(vec3(NormalMatrix * vec4(normal, 1.0)));\n"
+"\n"
+"    // The LightSourcePosition is actually its direction for directional light\n"
+"    vec3 L = normalize(LightSourcePosition.xyz);\n"
+"\n"
+"    // Multiply the diffuse value by the vertex color (which is fixed in this case)\n"
+"    // to get the actual color that we will use to draw this vertex with\n"
+"    float diffuse = max(dot(N, L), 0.0);\n"
+"    Color = diffuse * MaterialColor;\n"
+"\n"
+"    // Transform the position to clip coordinates\n"
+"    gl_Position = ModelViewProjectionMatrix * vec4(position, 1.0);\n"
+"}";
+
+static const char fragment_shader_gl[] =
+"#version 150\n"
+"\n"
+"smooth in vec4 Color;\n"
+"\n"
+"void main(void)\n"
+"{\n"
+"    gl_FragColor = Color;\n"
+"}";
+
+static const char vertex_shader_gles[] =
+"attribute vec3 position;\n"
+"attribute vec3 normal;\n"
+"\n"
+"uniform mat4 ModelViewProjectionMatrix;\n"
+"uniform mat4 NormalMatrix;\n"
+"uniform vec4 LightSourcePosition;\n"
+"uniform vec4 MaterialColor;\n"
+"\n"
+"varying vec4 Color;\n"
+"\n"
+"void main(void)\n"
+"{\n"
+"    // Transform the normal to eye coordinates\n"
+"    vec3 N = normalize(vec3(NormalMatrix * vec4(normal, 1.0)));\n"
+"\n"
+"    // The LightSourcePosition is actually its direction for directional light\n"
+"    vec3 L = normalize(LightSourcePosition.xyz);\n"
+"\n"
+"    // Multiply the diffuse value by the vertex color (which is fixed in this case)\n"
+"    // to get the actual color that we will use to draw this vertex with\n"
+"    float diffuse = max(dot(N, L), 0.0);\n"
+"    Color = diffuse * MaterialColor;\n"
+"\n"
+"    // Transform the position to clip coordinates\n"
+"    gl_Position = ModelViewProjectionMatrix * vec4(position, 1.0);\n"
+"}";
+
+static const char fragment_shader_gles[] =
+"precision mediump float;\n"
+"varying vec4 Color;\n"
+"\n"
+"void main(void)\n"
+"{\n"
+"    gl_FragColor = Color;\n"
+"}";
+
+static void
+gtk_gears_realize (GtkWidget *widget)
+{
+  GtkGLArea *glarea = GTK_GL_AREA (widget);
+  GtkGears *gears = GTK_GEARS (widget);
+  GtkGearsPrivate *priv = gtk_gears_get_instance_private (gears);
+  GdkGLContext *context;
+  GLuint vao, v, f, program;
+  const char *p;
+  char msg[512];
+
+  GTK_WIDGET_CLASS (gtk_gears_parent_class)->realize (widget);
+
+  gtk_gl_area_make_current (glarea);
+  if (gtk_gl_area_get_error (glarea) != NULL)
+    return;
+
+  context = gtk_gl_area_get_context (glarea);
+
+  glEnable (GL_CULL_FACE);
+  glEnable (GL_DEPTH_TEST);
+
+  /* Create the VAO */
+  glGenVertexArrays (1, &vao);
+  glBindVertexArray (vao);
+  priv->vao = vao;
+
+  /* Compile the vertex shader */
+  if (gdk_gl_context_get_use_es (context))
+    p = vertex_shader_gles;
+  else
+    p = vertex_shader_gl;
+  v = glCreateShader(GL_VERTEX_SHADER);
+  glShaderSource(v, 1, &p, NULL);
+  glCompileShader(v);
+  glGetShaderInfoLog(v, sizeof msg, NULL, msg);
+  g_print ("vertex shader info: %s\n", msg);
+
+  /* Compile the fragment shader */
+  if (gdk_gl_context_get_use_es (context))
+    p = fragment_shader_gles;
+  else
+    p = fragment_shader_gl;
+  f = glCreateShader(GL_FRAGMENT_SHADER);
+  glShaderSource(f, 1, &p, NULL);
+  glCompileShader(f);
+  glGetShaderInfoLog(f, sizeof msg, NULL, msg);
+  g_print ("fragment shader info: %s\n", msg);
+
+  /* Create and link the shader program */
+  program = glCreateProgram();
+  glAttachShader(program, v);
+  glAttachShader(program, f);
+  glBindAttribLocation(program, 0, "position");
+  glBindAttribLocation(program, 1, "normal");
+
+  glLinkProgram(program);
+  glGetProgramInfoLog(program, sizeof msg, NULL, msg);
+  g_print ("program info: %s\n", msg);
+  glDeleteShader (v);
+  glDeleteShader (f);
+
+  /* Enable the shaders */
+  glUseProgram(program);
+  priv->program = program;
+
+  /* Get the locations of the uniforms so we can access them */
+  priv->ModelViewProjectionMatrix_location = glGetUniformLocation(program, "ModelViewProjectionMatrix");
+  priv->NormalMatrix_location = glGetUniformLocation(program, "NormalMatrix");
+  priv->LightSourcePosition_location = glGetUniformLocation(program, "LightSourcePosition");
+  priv->MaterialColor_location = glGetUniformLocation(program, "MaterialColor");
+
+  /* Set the LightSourcePosition uniform which is constant throught the program */
+  glUniform4fv(priv->LightSourcePosition_location, 1, priv->LightSourcePosition);
+
+  /* make the gears */
+  priv->gear1 = create_gear(1.0, 4.0, 1.0, 20, 0.7);
+
+  /* Store the vertices in a vertex buffer object (VBO) */
+  glGenBuffers (1, &(priv->gear_vbo[0]));
+  glBindBuffer (GL_ARRAY_BUFFER, priv->gear_vbo[0]);
+  glBufferData (GL_ARRAY_BUFFER,
+                priv->gear1->nvertices * sizeof(GearVertex),
+                priv->gear1->vertices,
+                GL_STATIC_DRAW);
+
+  priv->gear2 = create_gear(0.5, 2.0, 2.0, 10, 0.7);
+  glGenBuffers (1, &(priv->gear_vbo[1]));
+  glBindBuffer (GL_ARRAY_BUFFER, priv->gear_vbo[1]);
+  glBufferData (GL_ARRAY_BUFFER,
+                priv->gear2->nvertices * sizeof(GearVertex),
+                priv->gear2->vertices,
+                GL_STATIC_DRAW);
+
+  priv->gear3 = create_gear(1.3, 2.0, 0.5, 10, 0.7);
+  glGenBuffers (1, &(priv->gear_vbo[2]));
+  glBindBuffer (GL_ARRAY_BUFFER, priv->gear_vbo[2]);
+  glBufferData (GL_ARRAY_BUFFER,
+                priv->gear3->nvertices * sizeof(GearVertex),
+                priv->gear3->vertices,
+                GL_STATIC_DRAW);
+}
+
+static void
+gtk_gears_unrealize (GtkWidget *widget)
+{
+  GtkGLArea *glarea = GTK_GL_AREA (widget);
+  GtkGearsPrivate *priv = gtk_gears_get_instance_private ((GtkGears *) widget);
+
+  gtk_gl_area_make_current (glarea);
+  if (gtk_gl_area_get_error (glarea) != NULL)
+    return;
+
+  /* Release the resources associated with OpenGL */
+  if (priv->gear_vbo[0] != 0)
+    glDeleteBuffers (1, &(priv->gear_vbo[0]));
+
+  if (priv->gear_vbo[1] != 0)
+    glDeleteBuffers (1, &(priv->gear_vbo[1]));
+
+  if (priv->gear_vbo[2] != 0)
+    glDeleteBuffers (1, &(priv->gear_vbo[2]));
+
+  if (priv->vao != 0)
+    glDeleteVertexArrays (1, &priv->vao);
+
+  if (priv->program != 0)
+    glDeleteProgram (priv->program);
+
+  priv->ModelViewProjectionMatrix_location = 0;
+  priv->NormalMatrix_location = 0;
+  priv->LightSourcePosition_location = 0;
+  priv->MaterialColor_location = 0;
+
+  GTK_WIDGET_CLASS (gtk_gears_parent_class)->unrealize (widget);
+}
+
+static gboolean
+gtk_gears_tick (GtkWidget     *widget,
+                GdkFrameClock *frame_clock,
+                gpointer       user_data)
+{
+  GtkGears *gears = GTK_GEARS (widget);
+  GtkGearsPrivate *priv = gtk_gears_get_instance_private (gears);
+  GdkFrameTimings *timings, *previous_timings;
+  gint64 previous_frame_time = 0;
+  gint64 frame_time;
+  gint64 history_start, history_len;
+  gint64 frame;
+  char *s;
+
+  frame = gdk_frame_clock_get_frame_counter (frame_clock);
+  frame_time = gdk_frame_clock_get_frame_time (frame_clock);
+
+  if (priv->first_frame_time == 0)
+    {
+      /* No need for changes on first frame */
+      priv->first_frame_time = frame_time;
+      if (priv->fps_label)
+        gtk_label_set_label (priv->fps_label, "FPS: ---");
+      return G_SOURCE_CONTINUE;
+    }
+
+  /* glxgears advances 70 degrees per second, so do the same */
+
+  priv->angle = fmod ((frame_time - priv->first_frame_time) / (double)G_USEC_PER_SEC * 70.0, 360.0);
+
+  gtk_widget_queue_draw (widget);
+
+  history_start = gdk_frame_clock_get_history_start (frame_clock);
+
+  if (priv->fps_label && frame % 60 == 0)
+    {
+      history_len = frame - history_start;
+      if (history_len > 0)
+        {
+          previous_timings = gdk_frame_clock_get_timings (frame_clock, frame - history_len);
+          previous_frame_time = gdk_frame_timings_get_frame_time (previous_timings);
+
+          s = g_strdup_printf ("FPS: %-4.1f", (G_USEC_PER_SEC * history_len) / (double)(frame_time - previous_frame_time));
+          gtk_label_set_label (priv->fps_label, s);
+          g_free (s);
+        }
+    }
+
+  timings = gdk_frame_clock_get_current_timings (frame_clock);
+  previous_timings = gdk_frame_clock_get_timings (frame_clock,
+                                                  gdk_frame_timings_get_frame_counter (timings) - 1);
+  if (previous_timings != NULL)
+    previous_frame_time = gdk_frame_timings_get_frame_time (previous_timings);
+
+  return G_SOURCE_CONTINUE;
+}
+
+void
+gtk_gears_set_axis (GtkGears *gears, int axis, double value)
+{
+  GtkGearsPrivate *priv = gtk_gears_get_instance_private (gears);
+
+  if (axis < 0 || axis >= GTK_GEARS_N_AXIS)
+    return;
+
+  priv->view_rot[axis] = value;
+
+  gtk_widget_queue_draw (GTK_WIDGET (gears));
+}
+
+double
+gtk_gears_get_axis (GtkGears *gears, int axis)
+{
+  GtkGearsPrivate *priv = gtk_gears_get_instance_private (gears);
+
+  if (axis < 0 || axis >= GTK_GEARS_N_AXIS)
+    return 0.0;
+
+  return priv->view_rot[axis];
+}
+
+void
+gtk_gears_set_fps_label (GtkGears *gears, GtkLabel *label)
+{
+  GtkGearsPrivate *priv = gtk_gears_get_instance_private (gears);
+
+  if (label)
+    g_object_ref (label);
+
+  g_clear_object (&priv->fps_label);
+
+  priv->fps_label = label;
+}

demos/gtk-demo/gtkgears.h

@@ -0,0 +1,48 @@
+#ifndef __GTK_GEARS_H__
+#define __GTK_GEARS_H__
+
+#include <gtk/gtk.h>
+
+G_BEGIN_DECLS
+
+enum {
+  GTK_GEARS_X_AXIS,
+  GTK_GEARS_Y_AXIS,
+  GTK_GEARS_Z_AXIS,
+
+  GTK_GEARS_N_AXIS
+};
+
+#define GTK_TYPE_GEARS      (gtk_gears_get_type ())
+#define GTK_GEARS(inst)     (G_TYPE_CHECK_INSTANCE_CAST ((inst), \
+                             GTK_TYPE_GEARS,             \
+                             GtkGears))
+#define GTK_IS_GEARS(inst)  (G_TYPE_CHECK_INSTANCE_TYPE ((inst), \
+                             GTK_TYPE_GEARS))
+
+typedef struct _GtkGears GtkGears;
+typedef struct _GtkGearsClass GtkGearsClass;
+
+struct _GtkGears {
+  GtkGLArea parent;
+};
+
+struct _GtkGearsClass {
+  GtkGLAreaClass parent_class;
+};
+
+GType      gtk_gears_get_type      (void) G_GNUC_CONST;
+
+GtkWidget *gtk_gears_new           (void);
+void       gtk_gears_set_axis      (GtkGears *gears,
+                                    int       axis,
+                                    double    value);
+double     gtk_gears_get_axis      (GtkGears *gears,
+                                    int       axis);
+void       gtk_gears_set_fps_label (GtkGears *gears,
+                                    GtkLabel *label);
+
+
+G_END_DECLS
+
+#endif /* __GTK_GEARS_H__ */

demos/gtk-demo/headerbar.c

@@ -24,19 +24,19 @@ do_headerbar (GtkWidget *do_widget)
   if (!window)
     {
       window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
-      gtk_window_set_screen (GTK_WINDOW (window), gtk_widget_get_screen (do_widget));
+      gtk_window_set_display (GTK_WINDOW (window),  gtk_widget_get_display (do_widget));
       g_signal_connect (window, "destroy",
                         G_CALLBACK (gtk_widget_destroyed), &window);
       gtk_window_set_default_size (GTK_WINDOW (window), 600, 400);
 
       header = gtk_header_bar_new ();
-      gtk_header_bar_set_show_close_button (GTK_HEADER_BAR (header), TRUE);
+      gtk_header_bar_set_show_title_buttons (GTK_HEADER_BAR (header), TRUE);
       gtk_header_bar_set_title (GTK_HEADER_BAR (header), "Welcome to Facebook - Log in, sign up or learn more");
       gtk_header_bar_set_has_subtitle (GTK_HEADER_BAR (header), FALSE);
 
       button = gtk_button_new ();
       icon = g_themed_icon_new ("mail-send-receive-symbolic");
-      image = gtk_image_new_from_gicon (icon, GTK_ICON_SIZE_BUTTON);
+      image = gtk_image_new_from_gicon (icon);
       g_object_unref (icon);
       gtk_container_add (GTK_CONTAINER (button), image);
       gtk_header_bar_pack_end (GTK_HEADER_BAR (header), button);
@@ -44,10 +44,10 @@ do_headerbar (GtkWidget *do_widget)
       box = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 0);
       gtk_style_context_add_class (gtk_widget_get_style_context (box), "linked");
       button = gtk_button_new ();
-      gtk_container_add (GTK_CONTAINER (button), gtk_image_new_from_icon_name ("pan-start-symbolic", GTK_ICON_SIZE_BUTTON));
+      gtk_container_add (GTK_CONTAINER (button), gtk_image_new_from_icon_name ("pan-start-symbolic"));
       gtk_container_add (GTK_CONTAINER (box), button);
       button = gtk_button_new ();
-      gtk_container_add (GTK_CONTAINER (button), gtk_image_new_from_icon_name ("pan-end-symbolic", GTK_ICON_SIZE_BUTTON));
+      gtk_container_add (GTK_CONTAINER (button), gtk_image_new_from_icon_name ("pan-end-symbolic"));
       gtk_container_add (GTK_CONTAINER (box), button);
 
       gtk_header_bar_pack_start (GTK_HEADER_BAR (header), box);

demos/gtk-demo/hypertext.c

@@ -105,14 +105,14 @@ follow_if_link (GtkWidget   *text_view,
 /* Links can be activated by pressing Enter.
  */
 static gboolean
-key_press_event (GtkWidget *text_view,
-                 GdkEventKey *event)
+key_pressed (GtkEventController *controller,
+             guint               keyval,
+             guint               keycode,
+             GdkModifierType     modifiers,
+             GtkWidget          *text_view)
 {
   GtkTextIter iter;
   GtkTextBuffer *buffer;
-  guint keyval;
-
-  gdk_event_get_keyval ((GdkEvent *)event, &keyval);
 
   switch (keyval)
     {
@@ -128,59 +128,52 @@ key_press_event (GtkWidget *text_view,
         break;
     }
 
-  return FALSE;
+  return GDK_EVENT_PROPAGATE;
 }
 
-/* Links can also be activated by clicking or tapping.
- */
-static gboolean
-event_after (GtkWidget *text_view,
-             GdkEvent  *ev)
+static void set_cursor_if_appropriate (GtkTextView *text_view,
+                                       gint         x,
+                                       gint         y);
+
+static void
+released_cb (GtkGestureMultiPress *gesture,
+             guint                 n_press,
+             gdouble               x,
+             gdouble               y,
+             GtkWidget            *text_view)
 {
   GtkTextIter start, end, iter;
   GtkTextBuffer *buffer;
-  gdouble ex, ey;
-  int x, y;
-  GdkEventType type;
+  int tx, ty;
 
-  type = gdk_event_get_event_type (ev);
+  if (gtk_gesture_single_get_button (GTK_GESTURE_SINGLE (gesture)) > 1)
+    return;
 
-  if (type == GDK_BUTTON_RELEASE)
-    {
-      guint button;
-
-      gdk_event_get_button (ev, &button);
-      if (button != GDK_BUTTON_PRIMARY)
-        return FALSE;
-    }
-  else if (type == GDK_TOUCH_END)
-    {
-    }
-  else
-    return FALSE;
-
-  gdk_event_get_coords (ev, &ex, &ey);
+  gtk_text_view_window_to_buffer_coords (GTK_TEXT_VIEW (text_view),
+                                         GTK_TEXT_WINDOW_WIDGET,
+                                         x, y, &tx, &ty);
 
   buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (text_view));
 
   /* we shouldn't follow a link if the user has selected something */
   gtk_text_buffer_get_selection_bounds (buffer, &start, &end);
   if (gtk_text_iter_get_offset (&start) != gtk_text_iter_get_offset (&end))
-    return FALSE;
-
-  gtk_text_view_window_to_buffer_coords (GTK_TEXT_VIEW (text_view),
-                                         GTK_TEXT_WINDOW_WIDGET,
-                                         ex, ey, &x, &y);
+    return;
 
   if (gtk_text_view_get_iter_at_location (GTK_TEXT_VIEW (text_view), &iter, x, y))
     follow_if_link (text_view, &iter);
+}
 
-  return TRUE;
+static void
+motion_cb (GtkEventControllerMotion *controller,
+           gdouble                   x,
+           gdouble                   y,
+           GtkTextView              *text_view)
+{
+  set_cursor_if_appropriate (text_view, x, y);
 }
 
 static gboolean hovering_over_link = FALSE;
-static GdkCursor *hand_cursor = NULL;
-static GdkCursor *regular_cursor = NULL;
 
 /* Looks at all tags covering the position (x, y) in the text view,
  * and if one of them is a link, change the cursor to the "hands" cursor
@@ -216,34 +209,15 @@ set_cursor_if_appropriate (GtkTextView    *text_view,
       hovering_over_link = hovering;
 
       if (hovering_over_link)
-        gdk_window_set_cursor (gtk_text_view_get_window (text_view, GTK_TEXT_WINDOW_TEXT), hand_cursor);
+        gtk_widget_set_cursor_from_name (GTK_WIDGET (text_view), "pointer");
       else
-        gdk_window_set_cursor (gtk_text_view_get_window (text_view, GTK_TEXT_WINDOW_TEXT), regular_cursor);
+        gtk_widget_set_cursor_from_name (GTK_WIDGET (text_view), "text");
     }
 
   if (tags)
     g_slist_free (tags);
 }
 
-/* Update the cursor image if the pointer moved.
- */
-static gboolean
-motion_notify_event (GtkWidget      *text_view,
-                     GdkEventMotion *event)
-{
-  gdouble ex, ey;
-  gint x, y;
-
-  gdk_event_get_coords ((GdkEvent *)event, &ex, &ey);
-  gtk_text_view_window_to_buffer_coords (GTK_TEXT_VIEW (text_view),
-                                         GTK_TEXT_WINDOW_WIDGET,
-                                         ex, ey, &x, &y);
-
-  set_cursor_if_appropriate (GTK_TEXT_VIEW (text_view), x, y);
-
-  return FALSE;
-}
-
 GtkWidget *
 do_hypertext (GtkWidget *do_widget)
 {
@@ -254,16 +228,12 @@ do_hypertext (GtkWidget *do_widget)
       GtkWidget *view;
       GtkWidget *sw;
       GtkTextBuffer *buffer;
-      GdkDisplay *display;
-
-      display = gtk_widget_get_display (do_widget);
-      hand_cursor = gdk_cursor_new_from_name (display, "pointer");
-      regular_cursor = gdk_cursor_new_from_name (display, "text");
+      GtkEventController *controller;
 
       window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
       gtk_window_set_title (GTK_WINDOW (window), "Hypertext");
-      gtk_window_set_screen (GTK_WINDOW (window),
-                             gtk_widget_get_screen (do_widget));
+      gtk_window_set_display (GTK_WINDOW (window),
+                              gtk_widget_get_display (do_widget));
       gtk_window_set_default_size (GTK_WINDOW (window), 450, 450);
 
       g_signal_connect (window, "destroy",
@@ -273,12 +243,19 @@ do_hypertext (GtkWidget *do_widget)
       gtk_text_view_set_wrap_mode (GTK_TEXT_VIEW (view), GTK_WRAP_WORD);
       gtk_text_view_set_left_margin (GTK_TEXT_VIEW (view), 20);
       gtk_text_view_set_right_margin (GTK_TEXT_VIEW (view), 20);
-      g_signal_connect (view, "key-press-event",
-                        G_CALLBACK (key_press_event), NULL);
-      g_signal_connect (view, "event-after",
-                        G_CALLBACK (event_after), NULL);
-      g_signal_connect (view, "motion-notify-event",
-                        G_CALLBACK (motion_notify_event), NULL);
+      controller = gtk_event_controller_key_new ();
+      g_signal_connect (controller, "key-pressed", G_CALLBACK (key_pressed), view);
+      gtk_widget_add_controller (view, controller);
+
+      controller = GTK_EVENT_CONTROLLER (gtk_gesture_multi_press_new ());
+      g_signal_connect (controller, "released",
+                        G_CALLBACK (released_cb), view);
+      gtk_widget_add_controller (view, controller);
+
+      controller = gtk_event_controller_motion_new ();
+      g_signal_connect (controller, "motion",
+                        G_CALLBACK (motion_cb), view);
+      gtk_widget_add_controller (view, controller);
 
       buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (view));