maplistmodel: Make constructor transfer full

This is for consistency with other wrapping list constructors. We want them all to be transfer full, allow-none. Update all callers.
flattenlistmodel: Make the constructor transfer full
2020-07-26 14:23:16 -04:00 · 2020-07-26 14:21:28 -04:00
3670 changed files with 465290 additions and 502288 deletions
--- a/.editorconfig
+++ b/.editorconfig
@@ -1,32 +0,0 @@
-# SPDX-FileCopyrightText: 2021 The GTK Authors
-# SPDX-License-Identifier: CC0-1.0
-
-root = true
-
-[*]
-charset = utf-8
-end_of_line = lf
-trim_trailing_whitespace = true
-
-[*.[ch]]
-indent_size = 2
-indent_style = space
-insert_final_newline = true
-# For the legacy tabs which still exist in the code:
-tab_width = 8
-
-[*.ui]
-indent_size = 2
-indent_style = space
-insert_final_newline = true
-
-[*.xml]
-indent_size = 2
-indent_style = space
-
-[meson.build]
-indent_size = 2
-indent_style = space
-
-[*.md]
-max_line_length = 80
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -1,13 +1,8 @@
-include:
-  - project: 'gnome/citemplates'
-    file: 'flatpak/flatpak_ci_initiative.yml'
-
 stages:
  - build
  - analysis
  - docs
  - flatpak
-  - publish
  - deploy

 .cache-paths: &cache-paths
@@ -21,12 +16,13 @@ stages:

 # Common variables
 variables:
-  COMMON_MESON_FLAGS: "-Dwerror=true -Dglib:werror=false -Dpango:werror=false -Dgtk-doc:werror=false -Dwayland-protocols:werror=false -Dsysprof:werror=false"
-  BACKEND_FLAGS: "-Dx11-backend=true -Dwayland-backend=true -Dbroadway-backend=true"
-  FEATURE_FLAGS: "-Dvulkan=enabled -Dcloudproviders=enabled"
+  COMMON_MESON_FLAGS: "--fatal-meson-warnings --werror"
+  BACKEND_FLAGS: "-Dx11-backend=true -Dwayland-backend=true -Dbroadway-backend=true -Dvulkan=yes"
+  FEATURE_FLAGS: "-Dcloudproviders=true"
  MESON_TEST_TIMEOUT_MULTIPLIER: 3
-  FEDORA_IMAGE: "registry.gitlab.gnome.org/gnome/gtk/fedora:v35"
+  FEDORA_IMAGE: "registry.gitlab.gnome.org/gnome/gtk/fedora:v20"
  FLATPAK_IMAGE: "registry.gitlab.gnome.org/gnome/gnome-runtime-images/gnome:master"
+  DOCS_IMAGE: "registry.gitlab.gnome.org/gnome/gtk/fedora-docs:v19"

 .only-default:
  only:
@@ -43,7 +39,6 @@ style-check-diff:
    - .gitlab-ci/run-style-check-diff.sh

 .build-fedora-default:
-  extends: .only-default
  image: $FEDORA_IMAGE
  artifacts:
    when: always
@@ -58,10 +53,8 @@ style-check-diff:
      - "${CI_PROJECT_DIR}/_build/report*.xml"
      - "${CI_PROJECT_DIR}/_build/report*.html"
      - "${CI_PROJECT_DIR}/_build/testsuite/reftests/output/*/*.png"
-      - "${CI_PROJECT_DIR}/_build/testsuite/tools/output/*/*"
      - "${CI_PROJECT_DIR}/_build/testsuite/gsk/compare/*/*/*.png"
      - "${CI_PROJECT_DIR}/_build/testsuite/css/output/*/*.syscap"
-      - "${CI_PROJECT_DIR}/_build_hello/meson-logs"
  cache:
    key: "$CI_JOB_NAME"
    paths:
@@ -75,65 +68,29 @@ style-check-diff:
 fedora-x86_64:
  extends: .build-fedora-default
  stage: build
-  needs: []
  variables:
    EXTRA_MESON_FLAGS: "--buildtype=debug --default-library=both"
  script:
-    - .gitlab-ci/show-info-linux.sh
-    - meson subprojects update
-    - mkdir _install
-    - meson --prefix=${CI_PROJECT_DIR}/_install
-            ${COMMON_MESON_FLAGS} ${EXTRA_MESON_FLAGS} ${BACKEND_FLAGS} ${FEATURE_FLAGS}
+    - meson ${COMMON_MESON_FLAGS} ${EXTRA_MESON_FLAGS} ${BACKEND_FLAGS} ${FEATURE_FLAGS}
+            -Dprofiler=true
            _build
-    - meson compile -C _build
-    - meson install -C _build
-    - PKG_CONFIG_PATH=${CI_PROJECT_DIR}/_install/lib64/pkgconfig:${CI_PROJECT_DIR}/_install/share/pkgconfig meson setup _build_hello examples/hello
-    - meson compile -C _build_hello
+    - ninja -C _build
    - .gitlab-ci/run-tests.sh _build x11
    - .gitlab-ci/run-tests.sh _build wayland
-    - .gitlab-ci/run-tests.sh _build waylandgles
    - .gitlab-ci/run-tests.sh _build broadway

 release-build:
  extends: .build-fedora-default
  stage: build
-  needs: []
  variables:
    EXTRA_MESON_FLAGS: "--buildtype=release"
  script:
-    - .gitlab-ci/show-info-linux.sh
-    - meson subprojects update
    - meson ${COMMON_MESON_FLAGS} ${EXTRA_MESON_FLAGS} ${BACKEND_FLAGS} ${FEATURE_FLAGS}
            _build
    - ninja -C _build
    - .gitlab-ci/run-tests.sh _build x11

-installed-tests:
-  extends: .build-fedora-default
-  stage: build
-  needs: []
-  variables:
-    EXTRA_MESON_FLAGS: "--prefix=/usr --libdir=/usr/lib64 -Dinstall-tests=true"
-    G_TEST_ACCESSIBLE: 1
-  script:
-    - .gitlab-ci/show-info-linux.sh
-    - meson subprojects update
-    - meson ${COMMON_MESON_FLAGS} ${EXTRA_MESON_FLAGS} ${BACKEND_FLAGS} ${FEATURE_FLAGS}
-            _build
-    - ninja -C _build
-    - sudo ninja -C _build install
-    - dbus-run-session xvfb-run -a -s "-screen 0 1024x768x24"
-            gnome-desktop-testing-runner
-                   --report-directory=_build/installed-tests-report/failed/
-                   --parallel=0
-                   gtk-4.0
-  artifacts:
-    paths:
-      - "_build/installed-tests-report/"
-
-
 .mingw-defaults:
-  extends: .only-default
  stage: build
  tags:
    - win32-ps
@@ -152,56 +109,10 @@ installed-tests:

 msys2-mingw64:
  extends: .mingw-defaults
-  needs: []
  variables:
    MSYSTEM: "MINGW64"
    CHERE_INVOKING: "yes"

-macos:
-  extends: .only-default
-  only:
-    - branches@GNOME/gtk
-  stage: build
-  tags:
-    - macos
-  needs: []
-  before_script:
-    - bash .gitlab-ci/show-info-osx.sh
-    - pip3 install --user meson==0.59
-    - pip3 install --user ninja
-    - export PATH=/Users/gitlabrunner/Library/Python/3.7/bin:$PATH
-    - export MESON_FORCE_BACKTRACE=1
-  script:
-    - meson -Dx11-backend=false
-            -Dbroadway-backend=true
-            -Dmacos-backend=true
-            -Dmedia-gstreamer=disabled
-            -Dintrospection=disabled
-            -Dcpp_std=c++11
-            -Dpixman:tests=disabled
-            _build
-    - ninja -C _build
-  artifacts:
-    when: always
-    paths:
-      - "${CI_PROJECT_DIR}/_build/meson-logs"
-
-vs2017-x64:
-  extends: .only-default
-  # TODO: Uncomment this when ready to merge.
-  #only:
-  #  - branches@GNOME/gtk
-  stage: build
-  tags:
-    - win32-ps
-  needs: []
-  script:
-    - .gitlab-ci/test-msvc.bat
-  artifacts:
-    when: always
-    paths:
-      - "${CI_PROJECT_DIR}/_build/meson-logs"
-
 .flatpak-defaults:
  image: $FLATPAK_IMAGE
  stage: flatpak
@@ -211,7 +122,6 @@ vs2017-x64:
  artifacts:
    paths:
      - "${APPID}-dev.flatpak"
-      - 'repo.tar'
    expire_in: 1 day
  script:
    - bash -x ./.gitlab-ci/flatpak-build.sh "${APPID}"
@@ -221,70 +131,45 @@ vs2017-x64:
  extends: .flatpak-defaults
  when: manual

-# Only build Flatpak bundles automatically on main
-.flatpak-main:
+# Only build Flatpak bundles automatically on master
+.flatpak-master:
  extends: .flatpak-defaults
  only:
-    - main
+    - master

 flatpak-manual:demo:
  extends: .flatpak-manual
-  needs: []
  variables:
    APPID: org.gtk.Demo4

-flatpak-main:demo:
-  extends: .flatpak-main
-  needs: []
+flatpak-master:demo:
+  extends: .flatpak-master
  variables:
    APPID: org.gtk.Demo4

 flatpak-manual:widget-factory:
  extends: .flatpak-manual
-  needs: []
  variables:
    APPID: org.gtk.WidgetFactory4

-flatpak-main:widget-factory:
-  extends: .flatpak-main
-  needs: []
+flatpak-master:widget-factory:
+  extends: .flatpak-master
  variables:
    APPID: org.gtk.WidgetFactory4

 flatpak-manual:icon-browser:
  extends: .flatpak-manual
-  needs: []
  variables:
    APPID: org.gtk.IconBrowser4

-flatpak-main:icon-browser:
-  extends: .flatpak-main
-  needs: []
+flatpak-master:icon-browser:
+  extends: .flatpak-master
  variables:
    APPID: org.gtk.IconBrowser4

-# Publish the demo apps to the GNOME Nightly repo
-# https://wiki.gnome.org/Apps/Nightly
-# https://gitlab.gnome.org/GNOME/Initiatives/-/wikis/DevOps-with-Flatpak
-nightly demo:
-    extends: '.publish_nightly'
-    dependencies: ['flatpak-main:demo']
-    needs: ['flatpak-main:demo']
-
-nightly factory:
-    extends: '.publish_nightly'
-    dependencies: ['flatpak-main:widget-factory']
-    needs: ['flatpak-main:widget-factory']
-
-nightly icon-browser:
-    extends: '.publish_nightly'
-    dependencies: ['flatpak-main:icon-browser']
-    needs: ['flatpak-main:icon-browser']
-
 static-scan:
  image: $FEDORA_IMAGE
  stage: analysis
-  needs: []
  variables:
    EXTRA_MESON_FLAGS: "--buildtype=debug"
  script:
@@ -301,10 +186,9 @@ asan-build:
  image: $FEDORA_IMAGE
  tags: [ asan ]
  stage: analysis
-  needs: []
  variables:
  script:
-    - CC=clang meson --buildtype=debugoptimized -Db_sanitize=address -Db_lundef=false -Dintrospection=disabled _build
+    - CC=clang meson --buildtype=debugoptimized -Db_sanitize=address -Db_lundef=false -Dintrospection=false _build
    - ninja -C _build
    - .gitlab-ci/run-tests.sh _build wayland
  artifacts:
@@ -313,37 +197,27 @@ asan-build:
  allow_failure: true

 reference:
-  image: $FEDORA_IMAGE
+  image: $DOCS_IMAGE
  stage: docs
-  needs: []
  variables:
-    EXTRA_MESON_FLAGS: "--buildtype=release --force-fallback-for=gdk-pixbuf,pango"
+    EXTRA_MESON_FLAGS: "--buildtype=release"
  script:
-    - meson ${COMMON_MESON_FLAGS} ${EXTRA_MESON_FLAGS} -Dgtk_doc=true -Dgdk-pixbuf:gtk_doc=true -Dpango:gtk_doc=true _build
-    - meson compile -C _build
+    - meson ${COMMON_MESON_FLAGS} ${EXTRA_MESON_FLAGS} -Dgtk_doc=true _build
+    - ninja -C _build gdk4-doc gsk4-doc gtk4-doc
    - mkdir -p _reference/
-    - mv _build/docs/reference/gdk/gdk4/ _reference/gdk4/
-    - mv _build/docs/reference/gdk/gdk4-x11/ _reference/gdk4-x11/
-    - mv _build/docs/reference/gdk/gdk4-wayland/ _reference/gdk4-wayland/
-    - mv _build/docs/reference/gsk/gsk4/ _reference/gsk4/
-    - mv _build/docs/reference/gtk/gtk4/ _reference/gtk4/
-    - mv _build/subprojects/pango/docs/Pango/ _reference/Pango/
-    - mv _build/subprojects/pango/docs/PangoCairo/ _reference/PangoCairo/
-    - mv _build/subprojects/pango/docs/PangoFc/ _reference/PangoFc/
-    - mv _build/subprojects/pango/docs/PangoFT2/ _reference/PangoFT2/
-    - mv _build/subprojects/pango/docs/PangoOT/ _reference/PangoOT/
-    - mv _build/subprojects/pango/docs/PangoXft/ _reference/PangoXft/
-    - mv _build/subprojects/gdk-pixbuf/docs/gdk-pixbuf/ _reference/gdk-pixbuf/
-    - mv _build/subprojects/gdk-pixbuf/docs/gdk-pixdata/ _reference/gdk-pixdata/
+    - mv _build/docs/reference/gdk/html/ _reference/gdk/
+    - mv _build/docs/reference/gsk/html/ _reference/gsk/
+    - mv _build/docs/reference/gtk/html/ _reference/gtk/
  artifacts:
    paths:
      - _reference

-publish-docs:
-  stage: publish
-  needs: ['reference']
+pages:
+  stage: deploy
  script:
-    - "curl -X POST -F token=${PAGES_TRIGGER_TOKEN} -F ref=docs-gtk-org https://gitlab.gnome.org/api/v4/projects/665/trigger/pipeline"
+    - mv _reference/ public/
+  artifacts:
+    paths:
+      - public
  only:
-    refs:
-      - main
+    - master
--- a/.gitlab-ci/README.md
+++ b/.gitlab-ci/README.md
@@ -17,8 +17,8 @@ branch, as well as their available versions.
 ### Checklist for Updating a CI image

 - [ ] Update the `${image}.Dockerfile` file with the dependencies
- - [ ] Run `./run-docker.sh build --base ${image} --version ${number}`
- - [ ] Run `./run-docker.sh push --base ${image} --version ${number}`
+ - [ ] Run `./run-docker.sh build --base ${image} --base-version ${number}`
+ - [ ] Run `./run-docker.sh push --base ${image} --base-version ${number}`
   once the Docker image is built; you may need to log in by using
   `docker login` or `podman login`
 - [ ] Update the `image` keys in the `.gitlab-ci.yml` file with the new
@@ -30,8 +30,8 @@ branch, as well as their available versions.
 - [ ] Write a new `${image}.Dockerfile` with the instructions to set up
   a build environment
 - [ ] Add the `pip3 install meson` incantation
- - [ ] Run `./run-docker.sh build --base ${image} --version ${number}`
- - [ ] Run `./run-docker.sh push --base ${image} --version ${number}`
+ - [ ] Run `./run-docker.sh build --base ${image} --base-version ${number}`
+ - [ ] Run `./run-docker.sh push --base ${image} --base-version ${number}`
 - [ ] Add the new job to `.gitlab-ci.yml` referencing the image
 - [ ] Open a merge request with your changes and let it run

--- a/.gitlab-ci/fedora-base.Dockerfile
+++ b/.gitlab-ci/fedora-base.Dockerfile
@@ -0,0 +1,90 @@
+FROM fedora:31
+
+RUN dnf -y install \
+    adwaita-icon-theme \
+    atk-devel \
+    at-spi2-atk-devel \
+    avahi-gobject-devel \
+    cairo-devel \
+    cairo-gobject-devel \
+    ccache \
+    clang \
+    clang-analyzer \
+    colord-devel \
+    cups-devel \
+    dbus-daemon \
+    dbus-x11 \
+    dejavu-sans-mono-fonts \
+    desktop-file-utils \
+    diffutils \
+    elfutils-libelf-devel \
+    fribidi-devel \
+    gcc \
+    gcc-c++ \
+    gdk-pixbuf2-devel \
+    gdk-pixbuf2-modules \
+    gettext \
+    git \
+    glib2-devel \
+    glib2-static \
+    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 \
+    hicolor-icon-theme \
+    iso-codes \
+    itstool \
+    json-glib-devel \
+    lcov \
+    libasan \
+    libattr-devel \
+    libepoxy-devel \
+    libffi-devel \
+    libmount-devel \
+    librsvg2 \
+    libselinux-devel \
+    libubsan \
+    libXcomposite-devel \
+    libXcursor-devel \
+    libXcursor-devel \
+    libXdamage-devel \
+    libXfixes-devel \
+    libXi-devel \
+    libXinerama-devel \
+    libxkbcommon-devel \
+    libXrandr-devel \
+    libXrender-devel \
+    libXtst-devel \
+    libxslt \
+    mesa-dri-drivers \
+    mesa-libEGL-devel \
+    mesa-libwayland-egl-devel \
+    ninja-build \
+    pango-devel \
+    pcre-devel \
+    pcre-static \
+    python3 \
+    python3-jinja2 \
+    python3-pip \
+    python3-pygments \
+    python3-wheel \
+    redhat-rpm-config \
+    sassc \
+    sysprof-devel \
+    systemtap-sdt-devel \
+    vulkan-devel \
+    wayland-devel \
+    wayland-protocols-devel \
+    weston \
+    weston-libs \
+    which \
+    xorg-x11-server-Xvfb \
+ && dnf clean all
+
+RUN pip3 install meson==0.53.1
+
--- a/.gitlab-ci/fedora-docs.Dockerfile
+++ b/.gitlab-ci/fedora-docs.Dockerfile
@@ -0,0 +1,12 @@
+FROM registry.gitlab.gnome.org/gnome/gtk/fedora-base:v19
+
+RUN dnf -y install pandoc
+
+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
--- a/.gitlab-ci/fedora.Dockerfile
+++ b/.gitlab-ci/fedora.Dockerfile
@@ -1,108 +1,8 @@
-FROM fedora:34
-
-RUN dnf -y install \
-    adwaita-icon-theme \
-    atk-devel \
-    at-spi2-atk-devel \
-    avahi-gobject-devel \
-    cairo-devel \
-    cairo-gobject-devel \
-    ccache \
-    clang \
-    clang-analyzer \
-    clang-tools-extra \
-    colord-devel \
-    cups-devel \
-    dbus-daemon \
-    dbus-x11 \
-    dejavu-sans-mono-fonts \
-    desktop-file-utils \
-    diffutils \
-    elfutils-libelf-devel \
-    fribidi-devel \
-    gcc \
-    gcc-c++ \
-    gdk-pixbuf2-devel \
-    gdk-pixbuf2-modules \
-    gettext \
-    git \
-    glib2-devel \
-    glib2-static \
-    glibc-devel \
-    glibc-headers \
-    gnome-desktop-testing \
-    gobject-introspection-devel \
-    graphene-devel \
-    graphviz \
-    gstreamer1-devel \
-    gstreamer1-plugins-good \
-    gstreamer1-plugins-bad-free-devel \
-    gstreamer1-plugins-base-devel \
-    hicolor-icon-theme \
-    iso-codes \
-    itstool \
-    json-glib-devel \
-    lcov \
-    libasan \
-    libattr-devel \
-    libcloudproviders-devel \
-    libepoxy-devel \
-    libffi-devel \
-    libjpeg-turbo-devel \
-    libmount-devel \
-    libpng-devel \
-    librsvg2 \
-    libselinux-devel \
-    libtiff-devel \
-    libubsan \
-    libXcomposite-devel \
-    libXcursor-devel \
-    libXcursor-devel \
-    libXdamage-devel \
-    libXfixes-devel \
-    libXi-devel \
-    libXinerama-devel \
-    libxkbcommon-devel \
-    libXrandr-devel \
-    libXrender-devel \
-    libXtst-devel \
-    libxslt \
-    mesa-dri-drivers \
-    mesa-libEGL-devel \
-    mesa-libGLES-devel \
-    meson \
-    ninja-build \
-    pango-devel \
-    pcre-devel \
-    pcre-static \
-    python3 \
-    python3-docutils \
-    python3-gobject \
-    python3-jinja2 \
-    python3-markdown \
-    python3-pip \
-    python3-pygments \
-    python3-toml \
-    python3-typogrify \
-    python3-wheel \
-    redhat-rpm-config \
-    sassc \
-    systemtap-sdt-devel \
-    vulkan-devel \
-    wayland-devel \
-    wayland-protocols-devel \
-    weston \
-    weston-libs \
-    which \
-    xorg-x11-server-Xvfb \
- && dnf clean all
-
-# Enable sudo for wheel users
-RUN sed -i -e 's/# %wheel/%wheel/' -e '0,/%wheel/{s/%wheel/# %wheel/}' /etc/sudoers
+FROM registry.gitlab.gnome.org/gnome/gtk/fedora-base:v20

 ARG HOST_USER_ID=5555
 ENV HOST_USER_ID ${HOST_USER_ID}
-RUN useradd -u $HOST_USER_ID -G wheel -ms /bin/bash user
+RUN useradd -u $HOST_USER_ID -ms /bin/bash user

 USER user
 WORKDIR /home/user
--- a/.gitlab-ci/flatpak-build.sh
+++ b/.gitlab-ci/flatpak-build.sh
@@ -22,9 +22,8 @@ flatpak build ${builddir} meson \
                -Dprint-backends=file \
                -Dbuild-tests=false \
                -Dbuild-examples=false \
-                -Dintrospection=disabled \
+                -Dintrospection=false \
                -Ddemos=true \
-                -Dprofile=devel \
                _flatpak_build

 flatpak build ${builddir} ninja -C _flatpak_build install
@@ -41,8 +40,3 @@ flatpak build-bundle \
        ${appid}-dev.flatpak \
        --runtime-repo=https://nightly.gnome.org/gnome-nightly.flatpakrepo \
        ${appid}
-
-# to be consumed by the nightly publish jobs
-if [[ $CI_COMMIT_BRANCH == main ]]; then
-        tar cf repo.tar ${repodir}
-fi
--- a/.gitlab-ci/meson-html-report.py
+++ b/.gitlab-ci/meson-html-report.py
@@ -268,7 +268,7 @@ aparser.add_argument('--job-id', metavar='ID',
                     default=None)
 aparser.add_argument('--branch', metavar='NAME',
                     help='Branch of the project being tested',
-                     default='main')
+                     default='master')
 aparser.add_argument('--output', metavar='FILE',
                     help='The output HTML file, stdout by default',
                     type=argparse.FileType('w', encoding='UTF-8'),
--- a/.gitlab-ci/meson-junit-report.py
+++ b/.gitlab-ci/meson-junit-report.py
@@ -27,7 +27,7 @@ aparser.add_argument('--job-id', metavar='ID',
                     default='Unknown')
 aparser.add_argument('--branch', metavar='NAME',
                     help='Branch of the project being tested',
-                     default='main')
+                     default='master')
 aparser.add_argument('--output', metavar='FILE',
                     help='The output file, stdout by default',
                     type=argparse.FileType('w', encoding='UTF-8'),
--- a/.gitlab-ci/pages/fonts.css
+++ b/.gitlab-ci/pages/fonts.css
@@ -1,154 +0,0 @@
-/*
- * SPDX-FileCopyrightText: 2021 GNOME Foundation
- *
- * SPDX-License-Identifier: LGPL-2.1-or-later
- */
-
-/**
- * RedHat Fonts taken from https://github.com/RedHatOfficial/RedHatFont
- * License: SIL Open Font License 1.1 http://scripts.sil.org/OFL
- */
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-  src: local('RedHatDisplayWeb'),
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-  src: local('RedHatDisplayWeb'),
-       url("RedHatDisplay-Bold.woff2") format("woff2"),
-       url("RedHatDisplay-Bold.woff") format("woff");
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-  font-weight: 700;
-  font-display: fallback;
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-@font-face {
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-  src: local('RedHatDisplayWeb'),
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-  font-weight: 900;
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-       url("RedHatText-BoldItalic.woff") format("woff");
-  font-style: italic;
-  font-weight: 900;
-  font-display: fallback;
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--- a/.gitlab-ci/pages/gtk-logo.svg
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-
-<svg
-   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"
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--- a/.gitlab-ci/pages/index.html
+++ b/.gitlab-ci/pages/index.html
@@ -1,149 +0,0 @@
-<!--
-SPDX-FileCopyrightText: 2021 GNOME Foundation
-
-SPDX-License-Identifier: LGPL-2.1-or-later
-->
-
-<!DOCTYPE html>
-<html lang="en">
-<head>
-  <title>GTK Documentation</title>
-  <meta name="viewport" content="width=device-width, initial-scale=1">
-
-  <meta charset="utf-8" />
-
-  <meta property="og:site_name" content="https://docs.gtk.org"/>
-  <meta property="og:title" content="GTK Documentation"/>
-  <meta property="og:url" content="https://docs.gtk.org"/>
-  <meta property="og:type" content="website"/>
-  <meta property="og:description" content="API reference for GTK"/>
-
-  <meta name="twitter:title" content="GTK Documentation"/>
-  <meta name="twitter:url" content="https://docs.gtk.org"/>
-  <meta name="twitter:card" content="summary"/>
-
-  <link rel="canonical" href="https://docs.gtk.org"/>
-
-  <link rel="stylesheet" href="style.css" type="text/css" />
-
-  <script src="main.js"></script>
-
-  <!--[if IE]><script src="http://html5shiv.googlecode.com/svn/trunk/html5.js"></script><![endif]-->
-</head>
-
-<body>
-  <div id="body-wrapper" tabindex="-1">
-
-    <nav class="sidebar">
-      
-      <div class="section">
-        <img src="gtk-logo.svg" class="logo"/>
-      </div>
-
-      <div class="section">
-        <h5>Sections</h5>
-        <div class="links">
-          <a href="#user-interface">User interface</a>
-          <a href="#core-libraries">Core libraries</a>
-        </div>
-      </div>
-
-    </nav>
-    
-    <button id="btn-to-top" class="hidden"><span class="up-arrow"></span></button>
-
-    <section id="main" class="content">
-      <header>
-        <h1>GTK Documentation</h1>
-      </header>
-
-      <div class="toggle-wrapper">
-        <h4 id="user-interface">
-          User interface
-          <a href="#user-interface" class="anchor"></a>
-        </h4>
-
-        <div class="docblock">
-          <h5 id="gdk">GTK</h5>
-          <p>GTK is the primary library used to construct user interfaces. It
-          provides user interface controls and signal callbacks to respond to
-          user actions.</p>
-          <p><a href="https://docs.gtk.org/gtk4/">GTK API reference</a></p>
-        </div>
-
-        <div class="docblock">
-          <h5 id="gdk">GSK</h5>
-          <p>An intermediate layer which provides a rendering API implemented using Cairo, OpenGL or Vulkan.</p>
-          <p><a href="https://docs.gtk.org/gsk4/">GSK API reference</a></p>
-        </div>
-
-        <div class="docblock">
-          <h5 id="gdk">GDK</h5>
-          <p>An intermediate layer which isolates GTK from the details of the windowing system.</p>
-          <p><a href="https://docs.gtk.org/gdk4/">GDK API reference</a></p>
-        </div>
-
-        <div class="docblock">
-          <h5 id="pango">Pango</h5>
-          <p>Pango is the core text and font handling library used in GTK
-          applications. It has extensive support for the different writing
-          systems used throughout the world.</p>
-          <p><a href="https://docs.gtk.org/Pango/">Pango API reference</a></p>
-        </div>
-
-        <div class="docblock">
-          <h5 id="gdk-pixbuf">GdkPixbuf</h5>
-          <p>GdkPixbuf is a library for image loading and manipulation.</p>
-          <p><a href="https://docs.gtk.org/gdk-pixbuf/">GdkPixbuf API reference</a></p>
-        </div>
-
-        <div class="docblock">
-          <h5 id="cairo">Cairo</h5>
-          <p>Cairo is a 2D graphics library with support for multiple output
-          devices. It is designed to produce consistent, high quality output
-          on all media.</p>
-          <p><a href="https://www.cairographics.org/manual/" class="external">Cairo API reference</a></p>
-        </div>
-      </div>
-
-      <div class="toggle-wrapper">
-        <h4 id="core-libraries" style="display:flex;">
-          Core libraries
-          <a href="#core-libraries" class="anchor"></a>
-        </h4>
-
-        <div class="docblock">
-          <h5 id="glib">GLib</h5>
-          <p>GLib provides the core application building blocks for libraries
-          and applications written in C. It provides common data types
-          used in GTK, the main loop implementation, and a large set of
-          utility functions for strings and general portability across
-          different platforms.</p>
-          <p><a href="https://developer.gnome.org/glib/" class="external">GLib API reference</a></p>
-        </div>
-
-        <div class="docblock">
-          <h5 id="gobject">GObject</h5>
-          <p>GObject provides the object system used by GTK.</p>
-          <p><a href="https://developer.gnome.org/gobject/" class="external">GObject API reference</a></p>
-        </div>
-
-        <div class="docblock">
-          <h5 id="gio">GIO</h5>
-          <p>GIO provides a portable, modern and easy-to-use file system
-          abstraction API for accessing local and remote files; a set of
-          low and high level abstractions over the <a href="https://www.freedesktop.org/wiki/Software/dbus/" class="external">DBus</a>
-          IPC specification; an application settings API; portable networking
-          abstractions; and additional utilities for writing asynchronous
-          operations without blocking the user interface of your application.</p>
-          <p><a href="https://developer.gnome.org/gio/" class="external">GIO API reference</a></p>
-        </div>
-      </div>
-
-    </section>
-
-    <footer>
-    </footer>
-  </div>
-</body>
-</html>
--- a/.gitlab-ci/pages/main.js
+++ b/.gitlab-ci/pages/main.js
@@ -1,140 +0,0 @@
-// SPDX-FileCopyrightText: 2021 GNOME Foundation
-//
-// SPDX-License-Identifier: LGPL-2.1-or-later
-
-// eslint-disable-next-line no-unused-vars
-function hasClass(elem, className) {
-    return elem && elem.classList && elem.classList.contains(className);
-}
-
-// eslint-disable-next-line no-unused-vars
-function addClass(elem, className) {
-    if (!elem || !elem.classList) {
-        return;
-    }
-    elem.classList.add(className);
-}
-
-// eslint-disable-next-line no-unused-vars
-function removeClass(elem, className) {
-    if (!elem || !elem.classList) {
-        return;
-    }
-    elem.classList.remove(className);
-}
-
-function insertAfter(newNode, referenceNode) {
-    referenceNode.parentNode.insertBefore(newNode, referenceNode.nextSibling);
-}
-
-function onEach(arr, func, reversed) {
-    if (arr && arr.length > 0 && func) {
-        var length = arr.length;
-        var i;
-        if (reversed !== true) {
-            for (i = 0; i < length; ++i) {
-                if (func(arr[i]) === true) {
-                    return true;
-                }
-            }
-        } else {
-            for (i = length - 1; i >= 0; --i) {
-                if (func(arr[i]) === true) {
-                    return true;
-                }
-            }
-        }
-    }
-    return false;
-}
-
-function onEachLazy(lazyArray, func, reversed) {
-    return onEach(
-        Array.prototype.slice.call(lazyArray),
-        func,
-        reversed);
-}
-
-// eslint-disable-next-line no-unused-vars
-function hasOwnProperty(obj, property) {
-    return Object.prototype.hasOwnProperty.call(obj, property);
-}
-
-window.addEventListener("load", function() {
-    "use strict;"
-
-    var main = document.getElementById("main");
-    var btnToTop = document.getElementById("btn-to-top");
-
-    function labelForToggleButton(isCollapsed) {
-        if (isCollapsed) {
-            return "+";
-        }
-        return "\u2212";
-    }
-
-    function createToggle(isCollapsed) {
-        var toggle = document.createElement("a");
-        toggle.href = "javascript:void(0)";
-        toggle.className = "collapse-toggle";
-        toggle.innerHTML = "[<span class=\"inner\">"
-                         + labelForToggleButton(isCollapsed)
-                         + "</span>]";
-
-        return toggle;
-    }
-
-    function toggleClicked() {
-        if (hasClass(this, "collapsed")) {
-            removeClass(this, "collapsed");
-            this.innerHTML = "[<span class=\"inner\">"
-                           + labelForToggleButton(false)
-                           + "</span>]";
-            onEachLazy(this.parentNode.getElementsByClassName("docblock"), function(e) {
-                removeClass(e, "hidden");
-            });
-        } else {
-            addClass(this, "collapsed");
-            this.innerHTML = "[<span class=\"inner\">"
-                           + labelForToggleButton(true)
-                           + "</span>]";
-            onEachLazy(this.parentNode.getElementsByClassName("docblock"), function(e) {
-                addClass(e, "hidden");
-            });
-        }
-    }
-
-    onEachLazy(document.getElementsByClassName("toggle-wrapper"), function(e) {
-        let sectionHeader = e.querySelector(".section-header");
-        let fragmentMatches = sectionHeader !== null && location.hash === "#" + sectionHeader.getAttribute('id');
-        collapsedByDefault = hasClass(e, "default-hide") && !fragmentMatches;
-        var toggle = createToggle(collapsedByDefault);
-        toggle.onclick = toggleClicked;
-        e.insertBefore(toggle, e.firstChild);
-        if (collapsedByDefault) {
-            addClass(toggle, "collapsed");
-            onEachLazy(e.getElementsByClassName("docblock"), function(d) {
-                addClass(d, "hidden");
-            });
-        }
-    });
-
-    function scrollBackTop(e) {
-        e.preventDefault();
-        window.scroll({
-            top: 0,
-            behavior: 'smooth',
-        });
-    }
-
-    function toggleScrollButton() {
-        if (window.scrollY < 400) {
-            addClass(btnToTop, "hidden");
-        } else {
-            removeClass(btnToTop, "hidden");
-        }
-    }
-
-    window.onscroll = toggleScrollButton;
-    btnToTop.onclick = scrollBackTop;
-}, false);
--- a/.gitlab-ci/pages/style.css
+++ b/.gitlab-ci/pages/style.css
@@ -1,747 +0,0 @@
-/*
- * SPDX-FileCopyrightText: 2021 GNOME Foundation
- *
- * SPDX-License-Identifier: LGPL-2.1-or-later
- */
-
-@import url("fonts.css");
-
-/*********************************
- * LIGHT THEME
- *********************************/
-:root {
-
-  /* colors */
-  --text-color: #333;
-  --text-color-muted: #999;
-  --primary: rgb(28, 118, 228);
-  --body-bg: #fff;
-  --sidebar-primary: rgb(144, 194, 255);
-  --sidebar-bg: #151515;
-  --sidebar-selected-bg: var(--primary);
-  --sidebar-text-color: #fafafa;
-  --sidebar-padding: 1.5em;
-
-  /* boxes, e.g. code blocks */
-  --box-bg: rgba(135, 135, 135, 0.085);
-  --box-radius: 0.35rem;
-  --box-padding: 0.75rem;
-  --box-margin: 0.75rem 0;
-  --box-text-color: #111;
-
-  /* typography */
-  --body-font-family: "Noto Serif",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,"Noto Sans",sans-serif,"Apple Color Emoji","Segoe UI Emoji","Segoe UI Symbol","Noto Color Emoji";
-  --body-font-scale: 0.95;
-  --body-font-size: calc(var(--body-font-scale) * clamp(16px, 1vw, 20px));
-  --body-font-weight: normal;
-
-  --monospace-font-family: "Source Code Pro", monospace;
-  --monospace-font-size: calc(0.86 * var(--body-font-size)); /* Monospace fonts are very different in terms of font-sizes. Adjust this value to scale it */
-
-  --heading-font-family: "Red Hat Display", var(--body-font-family);
-  --heading-weight: 900;
-  --heading-font-scale: 1.05;
-
-  --heading-small-font-family: var(--heading-font-family);
-  --heading-small-weight: 600;
-  --heading-small-font-scale: 1;
-
-  --heading-table-font-family: var(--heading-font-family);
-  --heading-table-weight: 600;
-
-  --heading-docblock-color: #6d6d6d;  /* docblocks have headings from source comments. we want them to differ.*/
-  --heading-docblock-scale: 0.9;        /* docblocks have headings from source comments. we want them to differ.*/
-
-  --symbol-font-family: var(--heading-font-family);
-  --symbol-font-weight: 500;
-  --symbol-font-scale: 1;
-
-  --table-font-size: 0.92em;    /* Tables often contain lots information. It's better to scale them down a big to get more sutff fitted inside */
-
-  /* misc */
-  --prefered-content-width: 90ch; /* The preferred width for the readable content */
-  --anchor-sign: "#";
-
-} 
-
-/*********************************
- * DARK THEME (overrides)
- *********************************/
- @media (prefers-color-scheme: dark) {
-  :root {
-    --primary: rgb(144, 194, 255);
-    --text-color: #f6f6f6;
-    --text-color-muted: #686868;
-    --body-bg: #121212;
-    --sidebar-primary: rgb(144, 194, 255);
-    --sidebar-bg: #1e1e1e;
-    --sidebar-selected-bg: rgb(17, 112, 228);
-    --sidebar-text-color: #fafafa;
-    --box-bg: rgba(135, 135, 135, 0.1);
-    --box-text-color: #fff;
-    --heading-docblock-color: #b7b7b7;
-  }
-
-  /* fix dark theme syntax highlighting with a filter (for now) */
-  .highlight pre span {
-  	filter: brightness(6);
-  }
-}
-
-/*********************************
- * GENERAL STYLING
- *********************************/
-*,
-*:before,
-*:after {
-  box-sizing: border-box;
-}
-
-::-moz-selection {
-  color: white;
-  background: var(--primary);
-}
-
-::selection {
-  color: white;
-  background: var(--primary);
-}
-
-::-webkit-scrollbar {
-  width: 8px;
-  height: 8px;
-}
-
-::-webkit-scrollbar-thumb {
-  border-radius: 10px;
-  background: rgba(128, 128, 128, 0.6);
-}
-
-::-webkit-scrollbar-thumb:hover {
-  background: rgba(128, 128, 128, 1);
-}
-
-::-webkit-scrollbar-track {
-  background: rgba(128, 128, 128, 0.15);
-}
-
-* {
-  scrollbar-width: initial;
-}
-
-body {
-  font: 16px/1.5 var(--body-font-family);
-  font-weight: var(--body-font-weight);
-  font-size: var(--body-font-size);
-  margin: 0;
-  padding: 0;
-  position: relative;
-
-  -webkit-font-feature-settings: "kern", "liga";
-  -moz-font-feature-settings: "kern", "liga";
-  font-feature-settings: "kern", "liga";
-  color: var(--text-color);
-  background: var(--body-bg);
-}
-
-h1, h2, h3, h4, h5, h6 {
-  font-family: var(--heading-font-family);
-  font-weight: var(--heading-weight);
-  margin: 1.75em 0 0.75em 0;
-  display: flex;
-  align-items: center;
-}
-
-h1 {
-  font-size: calc(1.75em * var(--heading-font-scale));
-}
-
-
-header h1 {
-  margin-top: 0;
-}
-
-h2 {
-  font-size: calc(1.4em * var(--heading-font-scale));
-}
-
-h3 {
-  font-size: calc(1.2em * var(--heading-font-scale));
-}
-
-header h3 {
-  color: var(--text-color-muted);
-  margin-bottom: 0;
-}
-
-h4, h5 {
-  font-size: calc(1em * var(--heading-font-scale));
-}
-
-h6 {
-  font-size: calc(1em * var(--heading-small-font-scale));
-  font-family: var(--heading-small-font-family);
-  font-weight: var(--heading-small-weight);
-}
-
-ol, ul {
-  padding-left: 1rem;
-}
-
-ul ul, ol ul, ul ol, ol ol {
-  margin-bottom: .6em;
-}
-
-p {
-  margin: 0 0 .6em 0;
-}
-
-a {
-  color: var(--primary);
-  text-decoration: none;
-}
-
-a:hover {
-  text-decoration: underline;
-}
-
-summary {
-  outline: none;
-}
-
-blockquote {
-  border-left: 3px solid var(--primary);
-  background: var(--box-bg);
-  padding: var(--box-padding);
-  border-radius: var(--box-radius);
-  margin: var(--box--margin);
-}
-
-code, 
-pre {
-  font-family: var(--monospace-font-family);
-  font-size: var(--monospace-font-size);
-  color: var(--box-text-color);
-}
-
-pre {
-  background: var(--box-bg);
-  padding: var(--box-padding);
-  border-radius: var(--box-radius);
-  overflow: auto;
-}
-
-code {
-  background: var(--box-bg);
-  padding: 0 0.35em;
-  border-radius: 0.35rem;
-  word-break: break-word;
-}
-
-a > code {
-  color: var(--primary);
-}
-
-
-pre pre,
-pre code {
-  padding: 0;
-  margin: 0;
-  font-size: 1em;
-  background: none;
-  color: inherit;
-}
-
-h1 code, h2 code, h3 code, h4 code, h5 code, h6 code {
-  font-family: inherit;
-  font-weight: inherit;
-  font-size: 0.85em;
-}
-
-strong, b {
-  font-weight: 600;
-}
-
-/* fix unwanted margins in tables, code, lists and blockquotes */
-li > *:first-child,
-li > *:first-child > *:first-child,
-li > *:first-child > *:first-child > *:first-child,
-td > *:first-child,
-td > *:first-child > *:first-child,
-td > *:first-child > *:first-child > *:first-child,
-pre > *:first-child,
-pre > *:first-child > *:first-child,
-pre > *:first-child > *:first-child > *:first-child,
-blockquote > *:first-child,
-blockquote > *:first-child > *:first-child,
-blockquote > *:first-child > *:first-child > *:first-child {
-  margin-top: 0;
-}
-li > *:last-child,
-li > *:last-child > *:last-child,
-li > *:last-child > *:last-child > *:last-child,
-td > *:last-child,
-td > *:last-child > *:last-child,
-td > *:last-child > *:last-child > *:last-child,
-pre > *:last-child,
-pre > *:last-child > *:last-child,
-pre > *:last-child > *:last-child > *:last-child,
-blockquote > *:last-child,
-blockquote > *:last-child > *:last-child,
-blockquote > *:last-child > *:last-child > *:last-child {
-  margin-bottom: 0;
-}
-
-/*********************************
- * PAGE STRUCTURE
- *********************************/
-#body-wrapper {
-  display: flex;
-  flex-wrap: nowrap;
-  flex-direction: row;
-}
-
-#body-wrapper:focus {
-  outline: none;
-}
-
-#main {
-  position: relative;
-  flex-grow: 1;
-  min-width: 0;
-  box-shadow: 0 0 134px rgba(0, 0, 0, 0.1);
-}
-
-footer {
-  width: 100%;
-  display: none;
-}
-
-/*********************************
- * Button
- *********************************/
-
-#btn-to-top {
-  position: fixed;
-  bottom: 12px;
-  right: 32px;
-  z-index: 1000;
-  border-radius: 50%;
-  width: 42px;
-  height: 42px;
-  border: 1px solid var(--primary);
-  background: var(--box-bg);
-  color: var(--text-color);
-  cursor: pointer;
-  text-transform: none;
-}
-
-#btn-to-top > .up-arrow:after {
-  content: "🡅"
-}
-
-/*********************************
- * SIDEBAR
- *********************************/
-.sidebar {
-  scrollbar-width: thin;
-  background: var(--sidebar-bg);
-  border-right: 1px solid var(--sidebar-bg);
-  min-width: 40ch;
-  padding: var(--sidebar-padding);
-  color: var(--sidebar-text-color);
-  position: sticky;
-  top: 0;
-  z-index: 2;
-  height: 100vh;
-  overflow-y: auto;
-}
-
-.sidebar a,
-.sidebar a:hover {
-  text-decoration: none;
-}
-
-.sidebar .logo {
-  display: block;
-  margin: 2rem auto 0 auto;
-  width: 70%;
-}
-
-.sidebar .section > ul > li {
-  margin-right: -10px;
-}
-
-.sidebar .section h3, .sidebar .section h5 {
-  text-align: left;
-  padding-left: 0.5rem;
-  padding-right: 0.5rem;
-  font-weight: var(--heading-weight);
-}
-
-.sidebar .section h5 {
-  font-size: 1em;
-  margin-bottom: 0.5em;
-}
-
-.sidebar .namespace > h3 {
-  margin-bottom: 0;
-  padding: 0;
-  font-size: 1.5em;
-  text-transform: uppercase;
-  font-weight: 900;
-}
-
-.sidebar .namespace > p {
-  font-size: 0.9em;
-  opacity: 0.8;
-  padding-left: 0.5rem;
-}
-
-.sidebar .section {
-  padding-left: 0.5rem;
-  padding-right: 0.5rem;
-}
-
-.sidebar .links {
-  margin-bottom: 1rem;
-}
-
-.sidebar .section a {
-  display: block;
-  text-overflow: ellipsis;
-  overflow: hidden;
-  transition: background-color 150ms ease;
-  color: var(--sidebar-primary);
-  border-radius: var(--box-radius);
-   padding: 0.2rem 0.5rem;
-  margin-bottom: 0.15rem;
-}
-
-.sidebar .section a:hover {
-  background-color: rgba(127, 127, 127, 0.2);
-  color: var(--sidebar-text-color);
-}
-
-.sidebar .section a.current {
-  background-color: var(--sidebar-selected-bg);
-  color: white;
-}
-
-.sidebar .search {
-  box-sizing: border-box;
-  text-align: center;
-}
-
-.sidebar .search input[type="text"] {
-  border-color: transparent;
-  width: 100%;
-  border: 1px solid #ccc;
-  border-radius: 50px;
-  padding: 6px 12px;
-  display: inline-block;
-  font-size: 80%;
-  box-shadow: inset 0 1px 3px #ddd;
-  transition: border .3s linear;
-}
-
-/*********************************
- * ANCHORS & TOGGLERS
- *********************************/
-.anchor,
-.md-anchor {
-  position: relative;
-  z-index: 1;
-  text-decoration: none;
-  padding: 0 0.5em;
-  color: var(--text-color-muted);
-}
-
-.anchor:hover,
-.md-anchor:hover {
-  color: var(--primary);
-}
-
-.anchor:not([href]),
-.md-anchor:not([href]) {
-  display: none;
-}
-
-.anchor:before,
-.md-anchor:before {
-  content: var(--anchor-sign); /*'§'*/
-}
-
-.toggle-wrapper {
-  position: relative;
-}
-
-.collapse-toggle {
-  position: absolute;
-  right: 0;
-  left: -2em;
-  white-space: nowrap;
-  text-decoration: none;
-  font-size: 0.8em;
-  color: transparent;
-}
-
-.collapse-toggle > .inner {
-  width: 1rem;
-  height: 1rem;
-  border-radius: calc(0.75 * var(--box-radius));
-  display: inline-flex;
-  justify-content: center;
-  align-items: center;
-  text-align: center;
-  vertical-align: middle;
-  color: var(--box-text-color);
-  position: relative;
-  left: -0.25rem;
-  font-family: monospace;
-  font-size: 0.7rem;
-  font-weight: bold;
-  background: var(--box-bg);
-}
-
-/*********************************
- * UTILITY
- *********************************/
-.deprecated > h6 > a {
-  opacity: 0.65;
-}
-
-.hidden {
-  display: none !important;
-}
-
-/*********************************
- * CONTENT STYLING
- *********************************/
-.content {
-  padding: 2em 4em;
-  overflow: visible;
-  max-width: calc(var(--prefered-content-width) + 8em);
-}
-
-.content table:not(.table-display) {
-  border-spacing: 0 0.25rem;
-}
-
-.content td {
-  vertical-align: top;
-}
-
-.content td:first-child {
-  padding-right: 1rem;
-}
-
-.content td p:first-child {
-  margin-top: 0;
-}
-
-.content td h1, .content td h2 {
-  margin-left: 0;
-  font-size: 1.1em;
-}
-
-.content tr:first-child td {
-  border-top: 0;
-}
-
-kbd {
-  display: inline-block;
-  padding: 3px 5px;
-  font: 15px monospace;
-  line-height: 10px;
-  vertical-align: middle;
-  border: solid 1px;
-  border-radius: 3px;
-  box-shadow: inset 0 -1px 0;
-  cursor: default;
-}
-
-.content tr:first-child {
-  border-bottom: 1px solid rgba(0, 0, 0, 0.35);
-}
-
-.content td {
-  vertical-align: top;
-}
-
-.content td:first-child {
-  padding-right: 1rem;
-}
-
-.content td p:first-child {
-  margin-top: 0;
-}
-
-.content td h4, .content td h5 {
-  margin-left: 0;
-  font-size: 1.1em;
-}
-
-.content tr:first-child td {
-  border-top: 0;
-}
-
-.srclink {
-  color: var(--text-color-muted);
-  font-size: 1rem;
-  font-weight: var(--body-font-weight);
-  flex-grow: 0;
-  text-decoration: none;
-  margin-left: auto;
-  position: relative;
-  z-index: 1;
-}
-
-.meta tr > td:not(:first-child) {
-  width: 100%;
-}
-
-.meta tr > td:first-child {
-  white-space: nowrap;
-}
-
-/*********************************
- * DOCBLOCK STYLING
- *********************************/
-.docblock {
-  position: relative;
-  text-align: left;
-}
-
-.docblock h1 {
-  font-size: calc(1.3em * var(--heading-docblock-scale) * var(--heading-font-scale));
-}
-
-.docblock h2 {
-  font-size: calc(1.2em * var(--heading-docblock-scale) * var(--heading-font-scale));
-}
-
-.docblock h3 {
-  font-size: calc(1.1em * var(--heading-docblock-scale) * var(--heading-font-scale));
-}
-
-.docblock h4 {
-  font-size: calc(1.05em * var(--heading-docblock-scale) * var(--heading-font-scale));
-}
-
-.docblock h1,
-.docblock h2,
-.docblock h3,
-.docblock h4,
-.docblock h5,
-.docblock h6 {
-  color: var(--heading-docblock-color)
-}
-
-.docblock table {
-  margin: .25em 0;
-  max-width: 100%;
-  font-size: var(--table-font-size);
-}
-
-.docblock table td {
-  padding: .25em;
-}
-
-.docblock table th {
-  padding: .25em;
-  text-align: left;
-  font-family: var(--heading-table-font-family);
-  font-weight: var(--heading-table-weight);
-}
-
-.docblock table tr th:first-child,
-.docblock table tr td:first-child {
-  padding-left: 0;
-}
-
-.docblock table tr th:last-child,
-.docblock table tr td:last-child {
-  padding-right: 0;
-}
-
-table.enum-members,
-table.results {
-  border-radius: var(--box-radius);
-  border: 1px solid var(--text-color-muted);
-  border-spacing: 0 0 !important;
-  font-size: 80%;
-}
-
-table.enum-members tr th,
-table.results tr th {
-  border-top-color: var(--body-bg);
-  background-color: var(--box-bg);
-  border-bottom: 1px solid var(--text-color-muted);
-}
-
-table.enum-members tr th:first-child,
-table.enum-members tr td:first-child {
-  min-width: 25em;
-  padding-left: .5em;
-}
-
-table.results tr th:first-child,
-table.results tr td:first-child {
-  padding-left: .5em;
-}
-
-table.enum-members tr th:last-child,
-table.enum-members tr td:last-child,
-table.results tr th:last-child,
-table.results tr td:last-child {
-  max-width: 35em;
-  padding-right: .5em;
-}
-
-table.results tr td code {
-  font-size: 100%;
-}
-
-.docblock ul li,
-.docblock ol li {
-  padding-top: 0.15rem;
-  padding-bottom: 0.15rem;
-}
-
-.docblock ul.type {
-  list-style: none;
-}
-
-.docblock ul.type li::before {
-  content: "»";
-  color: var(--text-color);
-  display: inline-block;
-  width: 1em;
-  margin-left: -1em;
-}
-
-/**************************
- RESPONSIVENESS
-**************************/
-@media (max-width: 700px) {
-  body {
-    padding-top: 0px;
-  }
-
-  #body-wrapper {
-    flex-direction: column;
-    overflow: hidden;
-  }
-
-  #main {
-    width: 100%;
-    padding: 2rem;
-  }
-
-  .sidebar {
-    position: static;
-    height: initial;
-    order: 1;
-  }
-}
--- a/.gitlab-ci/run-docker.sh
+++ b/.gitlab-ci/run-docker.sh
@@ -32,7 +32,7 @@ while (($# > 0)); do
                list) list=1;;
                help) print_help=1;;
                --base|-b) read_arg base "$@" || shift;;
-                --version|-v) read_arg base_version "$@" || shift;;
+                --base-version) read_arg base_version "$@" || shift;;
                --no-login) no_login=1;;
                *) echo -e "\e[1;31mERROR\e[0m: Unknown option '$1'"; exit 1;;
        esac
--- a/.gitlab-ci/run-style-check-diff.sh
+++ b/.gitlab-ci/run-style-check-diff.sh
@@ -2,7 +2,7 @@

 set -e

-# We need to add a new remote for the upstream main, since this script could
+# We need to add a new remote for the upstream master, since this script could
 # be running in a personal fork of the repository which has out of date branches.
 if [ "${CI_PROJECT_NAMESPACE}" != "GNOME" ]; then
    echo "Retrieving the current upstream repository from ${CI_PROJECT_NAMESPACE}/${CI_PROJECT_NAME}..."
@@ -16,7 +16,7 @@ fi

 # Work out the newest common ancestor between the detached HEAD that this CI job
 # has checked out, and the upstream target branch (which will typically be
-# `upstream/main` or `upstream/gtk-3-24`).
+# `upstream/master` or `upstream/gtk-3-24`).
 #
 # `${CI_MERGE_REQUEST_TARGET_BRANCH_NAME}` is only defined if we’re running in
 # a merge request pipeline; fall back to `${CI_DEFAULT_BRANCH}` otherwise.
@@ -36,7 +36,7 @@ exit_status=$?
 echo ""
 echo "Note that clang-format output is advisory and cannot always match the"
 echo "GTK coding style, documented at:"
-echo "   https://gitlab.gnome.org/GNOME/gtk/blob/main/docs/CODING-STYLE"
+echo "   https://gitlab.gnome.org/GNOME/gtk/blob/master/docs/CODING-STYLE"
 echo "Warnings from this tool can be ignored in favour of the documented "
 echo "coding style, or in favour of matching the style of existing"
 echo "surrounding code."
--- a/.gitlab-ci/run-tests.sh
+++ b/.gitlab-ci/run-tests.sh
@@ -8,17 +8,17 @@ builddir=$1
 backend=$2

 # Ignore memory leaks lower in dependencies
-export LSAN_OPTIONS=suppressions=$srcdir/lsan.supp:print_suppressions=0
-export G_SLICE=always-malloc
+export LSAN_OPTIONS=suppressions=$srcdir/lsan.supp

 case "${backend}" in
  x11)
-    xvfb-run -a -s "-screen 0 1024x768x24 -noreset" \
+    xvfb-run -a -s "-screen 0 1024x768x24" \
          meson test -C ${builddir} \
                --timeout-multiplier "${MESON_TEST_TIMEOUT_MULTIPLIER}" \
                --print-errorlogs \
                --setup=${backend} \
                --suite=gtk \
+                --no-suite=gtk:a11y \
                --no-suite=gsk-compare-broadway

    # Store the exit code for the CI run, but always
@@ -38,24 +38,7 @@ case "${backend}" in
                --print-errorlogs \
                --setup=${backend} \
                --suite=gtk \
-                --no-suite=gsk-compare-broadway
-
-    exit_code=$?
-    kill ${compositor}
-    ;;
-
-  waylandgles)
-    export XDG_RUNTIME_DIR="$(mktemp -p $(pwd) -d xdg-runtime-XXXXXX)"
-
-    weston --backend=headless-backend.so --socket=wayland-6 --idle-time=0 &
-    compositor=$!
-    export WAYLAND_DISPLAY=wayland-6
-
-    meson test -C ${builddir} \
-                --timeout-multiplier "${MESON_TEST_TIMEOUT_MULTIPLIER}" \
-                --print-errorlogs \
-                --setup=${backend} \
-                --suite=gtk \
+                --no-suite=gtk:a11y \
                --no-suite=gsk-compare-broadway

    exit_code=$?
@@ -74,18 +57,13 @@ case "${backend}" in
                --print-errorlogs \
                --setup=${backend} \
                --suite=gtk \
+                --no-suite=gtk:a11y \
                --no-suite=gsk-compare-opengl

    # don't let Broadway failures fail the run, for now
    exit_code=0
    kill ${server}
    ;;
-
-  *)
-    echo "Failed to add ${backend} to .gitlab-ci/run-tests.sh"
-    exit 1
-    ;;
-
 esac

 cd ${builddir}
--- a/.gitlab-ci/show-info-linux.sh
+++ b/.gitlab-ci/show-info-linux.sh
@@ -1,5 +0,0 @@
-#! /bin/sh
-
-. /etc/os-release
-
-echo $PRETTY_NAME
--- a/.gitlab-ci/show-info-osx.sh
+++ b/.gitlab-ci/show-info-osx.sh
@@ -1,8 +0,0 @@
-#!/bin/bash
-
-set -eux -o pipefail
-
-xcodebuild -version || :
-xcodebuild -showsdks || :
-
-system_profiler SPSoftwareDataType || :
--- a/.gitlab-ci/test-docker.sh
+++ b/.gitlab-ci/test-docker.sh
@@ -15,7 +15,7 @@ meson \
        -Dx11-backend=true \
        -Dwayland-backend=true \
        -Dbroadway-backend=true \
-        -Dvulkan=enabled \
+        -Dvulkan=yes \
        -Dprofiler=true \
        --werror \
        ${EXTRA_MESON_FLAGS:-} \
--- a/.gitlab-ci/test-msvc.bat
+++ b/.gitlab-ci/test-msvc.bat
@@ -1,14 +0,0 @@
-@echo on
-:: vcvarsall.bat sets various env vars like PATH, INCLUDE, LIB, LIBPATH for the
-:: specified build architecture
-call "C:\Program Files (x86)\Microsoft Visual Studio\2017\BuildTools\VC\Auxiliary\Build\vcvarsall.bat" x64
-@echo on
-
-:: FIXME: make warnings fatal
-pip3 install --upgrade --user meson==0.59 || goto :error
-meson -Dmedia-gstreamer=disabled _build || goto :error
-ninja -C _build || goto :error
-
-goto :EOF
-:error
-exit /b 1
--- a/.gitlab-ci/test-msys2.sh
+++ b/.gitlab-ci/test-msys2.sh
@@ -33,40 +33,30 @@ pacman --noconfirm -S --needed \
    mingw-w64-$MSYS2_ARCH-gst-plugins-bad \
    mingw-w64-$MSYS2_ARCH-shared-mime-info

+# https://gitlab.gnome.org/GNOME/gtk/issues/2243
+wget "https://gitlab.gnome.org/creiter/gitlab-ci-win32-runner-v2/raw/master/pango/mingw-w64-$MSYS2_ARCH-pango-git-1.44.7.90.ge48ae523-1-any.pkg.tar.zst"
+pacman --noconfirm -U "mingw-w64-$MSYS2_ARCH-pango-git-1.44.7.90.ge48ae523-1-any.pkg.tar.zst"
+
+# https://github.com/msys2/MINGW-packages/pull/6465
+pacman --noconfirm -S --needed mingw-w64-$MSYS2_ARCH-brotli
+
 mkdir -p _ccache
 export CCACHE_BASEDIR="$(pwd)"
 export CCACHE_DIR="${CCACHE_BASEDIR}/_ccache"

-# https://gitlab.gnome.org/GNOME/gtk/-/issues/2243
-# https://gitlab.gnome.org/GNOME/gtk/-/issues/3002
-
-if ! pkg-config --atleast-version=2.66.0 glib-2.0; then
-    git clone https://gitlab.gnome.org/GNOME/glib.git _glib
-    meson setup _glib_build _glib
-    meson compile -C _glib_build
-    meson install -C _glib_build
-fi
-pkg-config --modversion glib-2.0
-
-if ! pkg-config --atleast-version=1.50.0 pango; then
-    git clone https://gitlab.gnome.org/GNOME/pango.git _pango
-    meson setup _pango_build _pango
-    meson compile -C _pango_build
-    meson install -C _pango_build
-fi
-pkg-config --modversion pango
-
 # Build
 ccache --zero-stats
 ccache --show-stats
 export CCACHE_DISABLE=true
+# FIXME: introspection disabled for now because of
+# https://gitlab.gnome.org/GNOME/gobject-introspection/-/issues/340
 meson \
    -Dx11-backend=false \
    -Dwayland-backend=false \
    -Dwin32-backend=true \
-    -Dvulkan=disabled \
-    -Dintrospection=enabled \
-    -Dgtk:werror=true \
+    -Dvulkan=no \
+    -Dintrospection=false \
+    --werror \
    _build
 unset CCACHE_DISABLE

--- a/.gitlab/issue_templates/Bug.md
+++ b/.gitlab/issue_templates/Bug.md
@@ -1,13 +1,4 @@
-<!--
-  Please, read the CONTRIBUTING.md guide on how to file a new issue.
-
-  https://gitlab.gnome.org/GNOME/gtk/-/blob/main/CONTRIBUTING.md
-->
 ## Steps to reproduce
-<!--
-  Please, explain the sequence of actions necessary to reproduce the
-  bug
-->

 1. ...
 2. ...
@@ -41,8 +32,5 @@
 ## Additional information
 <!--
 - Screenshots or screen recordings are useful for visual errors
-  - Attaching a screenshot or a video without explaining the current
-    behavior and the actions necessary to reproduce the bug will lead
-    to the bug being closed
 - Please report any warning or message printed on the terminal
 -->
--- a/.gitlab/issue_templates/Crash.md
+++ b/.gitlab/issue_templates/Crash.md
@@ -1,14 +1,4 @@
-<!--
-  Please, read the CONTRIBUTING.md guide on how to file a new issue.
-
-  https://gitlab.gnome.org/GNOME/gtk/-/blob/main/CONTRIBUTING.md
-->
-
 ## Steps to reproduce
-<!--
-  Please, explain the sequence of actions necessary to reproduce the
-  crash
-->

 1. ...
 2. ...
--- a/30
+++ b/30
@@ -1,5 +1,5 @@
-Please do not mail any of the authors listed here
-asking questions about this version of GTK.
+Please do not mail any of the authors listed here 
+asking questions about this version of GTK+. 

 Original Authors
 ----------------
@@ -7,8 +7,8 @@ Peter Mattis      <petm@xcf.berkeley.edu>
 Spencer Kimball   <spencer@xcf.berkeley.edu>
 Josh MacDonald    <jmacd@xcf.berkeley.edu>

-The Team that build GTK 2 (in alphabetical order)
-------------------------------------------------
+The GTK+ Team (in alphabetical order)
+-------------------------------------
 Shawn T. Amundson <amundson@gtk.org>
 Jerome Bolliet    <bolliet@gtk.org>
 Damon Chaplin     <damon@gtk.org>
@@ -28,24 +28,11 @@ Jay Painter       <jpaint@gtk.org>
 Manish Singh      <manish@gtk.org>
 Owen Taylor       <otaylor@gtk.org>

-The current team (GTK 3 and 4)
------------------------------
-
-Jonas Ådahl       <jadahl@gmail.com>
-Tim Bäder         <mail@baedert.org>
-Emmanuele Bassi   <ebassi@gnome.org>
-Chun-wei Fan      <fanchunwei@src.gnome.org>
-Matthias Clasen   <mclasen@redhat.com>
-Carlos Garnacho   <mrgarnacho@gmail.com>
-Alexander Larsson <alexl@redhat.com>
-Benjamin Otte     <otte@gnome.org>
-
-
 There are many others who have contributed patches; we thank them,
-GTK is much better because of them.
+GTK+ is much better because of them.


-Over time, GTK has incorporated some pieces of software which
+Over time, GTK+ has incorporated some pieces of software which 
 started as independent projects. We list the original authors here:


@@ -76,8 +63,3 @@ DirectFB backend
 Denis Oliver Kropp
 Sven Neumann
 Mike Emmel
-
-
-gtkparasite
-----------
-Christian Hammond
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -56,12 +56,6 @@ 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

-It is fine to include screenshots of screen recordings to demonstrate
-an issue that is best to understand visually, but please don't just
-dump screen recordings without further details into issues. It is
-essential that the problem is described in enough detail to reproduce
-it without watching a video.
-
 For small issues, such as:

 - spelling/grammar fixes in the documentation
@@ -256,7 +250,7 @@ people committing to GTK to follow a few rules:
 0. Always write a meaningful commit message. Changes without a sufficient
   commit message will be reverted.

-0. Never push to the `main` branch, or any stable branches, directly; you
+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
--- a/9208
+++ b/9208
--- a/NEWS.pre-4.0
+++ b/NEWS.pre-4.0
--- a/README.md
+++ b/README.md
@@ -1,7 +1,7 @@
 GTK — The GTK toolkit
 =====================

-[![Build status](https://gitlab.gnome.org/GNOME/gtk/badges/main/pipeline.svg)](https://gitlab.gnome.org/GNOME/gtk/-/commits/main)
+[![Build Status](https://gitlab.gnome.org/GNOME/gtk/badges/master/build.svg)](https://gitlab.gnome.org/GNOME/gtk/pipelines)

 General information
 -------------------
@@ -10,16 +10,14 @@ 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 a free and open-source software project. 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.
-
-GTK is hosted by the GNOME project (thanks!) and used by a wide variety
-of applications and projects.
+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.

 The official download location

-  - https://download.gnome.org/sources/gtk/
+  - https://download.gnome.org/sources/gtk+

 The official web site

@@ -34,16 +32,9 @@ Discussion forum
  - https://discourse.gnome.org/c/platform/core/

 Nightly documentation can be found at
-  - Gtk: https://gnome.pages.gitlab.gnome.org/gtk/gtk4/
-  - Gdk: https://gnome.pages.gitlab.gnome.org/gtk/gdk4/
-  - Gsk: https://gnome.pages.gitlab.gnome.org/gtk/gsk4/
-
-Nightly flatpaks of our demos can be installed from the
-[GNOME Nightly](https://wiki.gnome.org/Apps/Nightly) repository:
-  - `flatpak remote-add --if-not-exists gnome-nightly https://nightly.gnome.org/gnome-nightly.flatpakrepo`
-  - `flatpak install gnome-nightly org.gtk.Demo4`
-  - `flatpak install gnome-nightly org.gtk.WidgetFactory4`
-  - `flatpak install gnome-nightly org.gtk.IconBrowser4`
+  - 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
 -----------------------
@@ -58,13 +49,14 @@ In order to build GTK you will need:
 You will also need various dependencies, based on the platform you are
 building for:

-  - [GLib](https://download.gnome.org/sources/glib/)
-  - [GdkPixbuf](https://download.gnome.org/sources/gdk-pixbuf/)
-  - [GObject-Introspection](https://download.gnome.org/sources/gobject-introspection/)
-  - [Cairo](https://www.cairographics.org/)
-  - [Pango](https://download.gnome.org/sources/pango/)
+  - [GLib](https://download.gnome.org/sources/glib)
+  - [GdkPixbuf](https://download.gnome.org/sources/gdk-pixbuf)
+  - [GObject-Introspection](https://download.gnome.org/sources/gobject-introspection)
+  - [Cairo](https://www.cairographics.org)
+  - [Pango](https://download.gnome.org/sources/pango)
  - [Epoxy](https://github.com/anholt/libepoxy)
  - [Graphene](https://github.com/ebassi/graphene)
+  - [ATK](https://download.gnome.org/sources/atk)
  - [Xkb-common](https://github.com/xkbcommon/libxkbcommon)

 If you are building the X11 backend, you will also need:
@@ -78,6 +70,7 @@ If you are building the X11 backend, you will also need:
    - 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:

@@ -107,28 +100,14 @@ And, finally, you can install GTK using:
 $ sudo ninja install
 ```

-Complete information about installing GTK and related libraries
+Complete information about installing GTK+ and related libraries
 can be found in the file:

 ```
 docs/reference/gtk/html/gtk-building.html
 ```

-Or [online](https://docs.gtk.org/gtk4/building.html)
-
-Default branch renamed to `main`
--------------------------------
-
-The default development branch of GTK has been renamed to `main`.
-To update your local checkout, use:
-```sh
-git checkout master
-git branch -m master main
-git fetch
-git branch --unset-upstream
-git branch -u origin/main
-git symbolic-ref refs/remotes/origin/HEAD refs/remotes/origin/main
-```
+Or [online](https://developer.gnome.org/gtk4/stable/gtk-building.html)

 How to report bugs
 ------------------
@@ -167,17 +146,14 @@ Contributing to GTK
 Please, follow the [contribution guide](./CONTRIBUTING.md) to know how to
 start contributing to GTK.

-If you want to support GTK financially, please consider donating to
-the GNOME project, which runs the infrastructure hosting GTK.
-
 Release notes
 -------------

 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/stable/gtk-migrating-2-to-3.html)
- - [4.x release notes](https://docs.gtk.org/gtk4/migrating-3to4.html)
+ - [3.x release notes](https://developer.gnome.org/gtk3/unstable/gtk-migrating-2-to-3.html)
+ - [4.x release notes](https://developer.gnome.org/gtk4/unstable/gtk-migrating-3-to-4.html)

 Licensing terms
 ---------------
@@ -187,7 +163,3 @@ version 2.1 or, at your option, any later version, as published by the Free
 Software Foundation.

 Please, see the [`COPYING`](./COPYING) file for further information.
-
-GTK includes a small number of source files under the Apache license:
- A fork of the roaring bitmaps implementation in [gtk/roaring](./gtk/roaring)
- An adaptation of timsort from python in [gtk/timsort](./gtk/timsort)
--- a/build-aux/flatpak/lua-5.1.5-so.patch
+++ b/build-aux/flatpak/lua-5.1.5-so.patch
@@ -1,43 +0,0 @@
-diff -ur lua-5.1.4/src/Makefile lua-5.1.4-new/src/Makefile
--- lua-5.1.4/src/Makefile	2008-01-19 20:37:58.000000000 +0100
-+++ lua-5.1.4-new/src/Makefile	2012-02-23 18:26:43.000000000 +0100
-@@ -23,6 +23,7 @@
- PLATS= aix ansi bsd freebsd generic linux macosx mingw posix solaris
- 
- LUA_A=	liblua.a
-+LUA_SO=	liblua.so
- CORE_O=	lapi.o lcode.o ldebug.o ldo.o ldump.o lfunc.o lgc.o llex.o lmem.o \
- 	lobject.o lopcodes.o lparser.o lstate.o lstring.o ltable.o ltm.o  \
- 	lundump.o lvm.o lzio.o
-@@ -36,7 +37,7 @@
- LUAC_O=	luac.o print.o
- 
- ALL_O= $(CORE_O) $(LIB_O) $(LUA_O) $(LUAC_O)
-ALL_T= $(LUA_A) $(LUA_T) $(LUAC_T)
-+ALL_T= $(LUA_A) $(LUA_SO) $(LUA_T) $(LUAC_T)
- ALL_A= $(LUA_A)
- 
- default: $(PLAT)
-@@ -51,6 +52,11 @@
- 	$(AR) $@ $?
- 	$(RANLIB) $@
- 
-+$(LUA_SO): $(CORE_O) $(LIB_O)
-+	$(CC) -shared -ldl -Wl,-soname,$(LUA_SO).$(V) -o $@.$(R) $? -lm $(MYLDFLAGS)
-+	ln -sf $(LUA_SO).$(R) $(LUA_SO).$(V)
-+	ln -sf $(LUA_SO).$(R) $(LUA_SO)
-+
- $(LUA_T): $(LUA_O) $(LUA_A)
- 	$(CC) -o $@ $(MYLDFLAGS) $(LUA_O) $(LUA_A) $(LIBS)
- 
--- lua-5.1.4/Makefile	2008-08-12 02:40:48.000000000 +0200
-+++ lua-5.1.4-new/Makefile	2012-02-23 19:06:32.000000000 +0100
-@@ -53,7 +53,7 @@
- all:	$(PLAT)
- 
- $(PLATS) clean:
-	cd src && $(MAKE) $@
-+	cd src && $(MAKE) $@ V=$(V) R=$(R)
- 
- test:	dummy
- 	src/lua test/hello.lua
--- a/build-aux/flatpak/org.gtk.Demo4.json
+++ b/build-aux/flatpak/org.gtk.Demo4.json
@@ -1,65 +1,56 @@
 {
-    "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" : [
+    "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.*"
+        "--talk-name=org.gtk.vfs", "--talk-name=org.gtk.vfs.*"
    ],
-    "cleanup" : [
+    "cleanup": [
        "/include",
-        "/lib/pkgconfig",
-        "/share/pkgconfig",
+        "/lib/pkgconfig", "/share/pkgconfig",
        "/share/aclocal",
-        "/man",
-        "/share/man",
-        "/share/gtk-doc",
-        "*.la",
-        ".a",
+        "/man", "/share/man", "/share/gtk-doc",
+        "*.la", ".a",
        "/lib/girepository-1.0",
        "/share/gir-1.0",
        "/share/doc"
    ],
-    "modules" : [
+    "modules": [
        {
            "name" : "wayland",
-            "buildsystem" : "meson",
+            "buildsystem" : "autotools",
            "builddir" : true,
            "config-opts" : [
-                "-Ddocumentation=false"
+                "--disable-documentation"
            ],
            "sources" : [
                {
                    "type" : "git",
-                    "url" : "https://gitlab.freedesktop.org/wayland/wayland.git"
+                    "url" : "https://github.com/wayland-project/wayland.git"
                }
            ]
        },
        {
-            "name" : "graphene",
-            "buildsystem" : "meson",
-            "builddir" : true,
-            "config-opts" : [
+            "name": "graphene",
+            "buildsystem": "meson",
+            "builddir": true,
+            "config-opts": [
                "--libdir=/app/lib",
                "-Dtests=false",
                "-Dbenchmarks=false"
            ],
-            "sources" : [
+            "sources": [
                {
-                    "type" : "git",
-                    "url" : "https://github.com/ebassi/graphene.git"
+                    "type": "git",
+                    "url": "https://github.com/ebassi/graphene.git"
                }
            ]
        },
@@ -67,7 +58,7 @@
            "name" : "libsass",
            "buildsystem" : "meson",
            "builddir" : true,
-            "config-opts" : [
+            "config-opts": [
                "--libdir=/app/lib"
            ],
            "sources" : [
@@ -82,7 +73,7 @@
            "name" : "sassc",
            "buildsystem" : "meson",
            "builddir" : true,
-            "config-opts" : [
+            "config-opts": [
                "--libdir=/app/lib"
            ],
            "sources" : [
@@ -94,113 +85,18 @@
            ]
        },
        {
-            "name": "boost",
-            "buildsystem": "simple",
-            "build-commands": [
-                "./bootstrap.sh --prefix=/app --with-libraries=date_time,filesystem,iostreams,locale,regex,system,thread,python,program_options,test,serialization",
-                "./b2 --build-type=minimal link=shared -j $FLATPAK_BUILDER_N_JOBS",
-                "./b2 --build-type=minimal link=shared install"
-             ],
-             "sources": [
-                 {
-                     "type": "archive",
-                     "url": "https://boostorg.jfrog.io/artifactory/main/release/1.69.0/source/boost_1_69_0.tar.bz2",
-                     "sha256": "8f32d4617390d1c2d16f26a27ab60d97807b35440d45891fa340fc2648b04406"
-                 }
-            ]
-        },
-        {
-            "name": "lua-5.1",
-            "buildsystem": "simple",
-            "build-commands": [
-                "make -j $FLATPAK_BUILDER_N_JOBS CFLAGS=\"$CFLAGS -fPIC -DLUA_USE_LINUX\" linux",
-                "make INSTALL_TOP=$FLATPAK_DEST TO_LIB='liblua.a liblua.so.5.1.5' install",
-                "ln -sf liblua.so.5.1.5 $FLATPAK_DEST/lib/liblua.so",
-                "ln -sf liblua.so.5.1.5 $FLATPAK_DEST/lib/liblua.so.5.1",
-                "install -Dm0644 etc/lua.pc $FLATPAK_DEST/lib/pkgconfig/lua.pc",
-                "ln -sf lua.pc $FLATPAK_DEST/lib/pkgconfig/lua51.pc",
-                "ln -sf lua.pc $FLATPAK_DEST/lib/pkgconfig/lua5.1.pc",
-                "ln -sf lua.pc $FLATPAK_DEST/lib/pkgconfig/lua-5.1.pc"
+            "name": "gtk",
+            "buildsystem": "meson",
+            "builddir": true,
+            "config-opts": [
+                "--libdir=/app/lib"
            ],
            "sources": [
                {
-                    "type": "archive",
-                    "url": "https://www.lua.org/ftp/lua-5.1.5.tar.gz",
-                    "sha256": "2640fc56a795f29d28ef15e13c34a47e223960b0240e8cb0a82d9b0738695333"
-                },
-                {
-                    "type": "patch",
-                    "path": "lua-5.1.5-so.patch"
-                },
-                {
-                    "type": "shell",
-                    "commands": [
-                        "sed -i \"s|/usr/local|$FLATPAK_DEST|\" etc/lua.pc src/luaconf.h"
-                    ]
-                }
-            ],
-            "cleanup": [
-                "*.a",
-                "/bin",
-                "/include",
-                "/lib/pkgconfig",
-                "/man"
-            ]
-        },
-        {
-            "name" : "highlight",
-            "buildsystem" : "simple",
-            "builddir" : true,
-            "build-commands" : [
-                "sed -i -e 's#^PREFIX = /usr#PREFIX = /app#' makefile",
-                "make",
-                "make install"
-            ],
-            "sources" : [
-                {
-                    "type" : "archive",
-                    "url" : "http://www.andre-simon.de/zip/highlight-4.0.tar.bz2",
-                    "sha256" : "f40dcba26e011a2c67df874f4d9b0238c2c6b065163ce8de3d8371b9dfce864d"
-                }
-            ]
-        },
-        {
-            "name" : "pango",
-            "buildsystem" : "meson",
-            "builddir" : true,
-            "config-opts" : [
-                "--libdir=/app/lib"
-            ],
-            "sources" : [
-                {
-                    "type" : "git",
-                    "url" : "https://gitlab.gnome.org/GNOME/pango.git",
-                    "branch" : "main"
-                }
-            ]
-        },
-        {
-            "name" : "gtk",
-            "buildsystem" : "meson",
-            "builddir" : true,
-            "config-opts" : [
-                "--libdir=/app/lib",
-                "-Denable_vulkan=no",
-                "-Dbuildtype=debugoptimized",
-                "-Dprofile=devel"
-            ],
-            "sources" : [
-                {
-                    "type" : "git",
-                    "url" : "https://gitlab.gnome.org/GNOME/gtk.git",
-                    "branch" : "main"
+                    "type": "git",
+                    "url": "https://gitlab.gnome.org/GNOME/gtk.git"
                }
            ]
        }
-    ],
-    "build-options" : {
-        "env" : {
-            "GSK_RENDERER" : "opengl"
-        }
-    }
+    ]
 }
--- a/build-aux/flatpak/org.gtk.IconBrowser4.json
+++ b/build-aux/flatpak/org.gtk.IconBrowser4.json
@@ -1,65 +1,56 @@
 {
-    "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" : [
+    "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.*"
+        "--talk-name=org.gtk.vfs", "--talk-name=org.gtk.vfs.*"
    ],
-    "cleanup" : [
+    "cleanup": [
        "/include",
-        "/lib/pkgconfig",
-        "/share/pkgconfig",
+        "/lib/pkgconfig", "/share/pkgconfig",
        "/share/aclocal",
-        "/man",
-        "/share/man",
-        "/share/gtk-doc",
-        "*.la",
-        ".a",
+        "/man", "/share/man", "/share/gtk-doc",
+        "*.la", ".a",
        "/lib/girepository-1.0",
        "/share/gir-1.0",
        "/share/doc"
    ],
-    "modules" : [
+    "modules": [
        {
            "name" : "wayland",
-            "buildsystem" : "meson",
+            "buildsystem" : "autotools",
            "builddir" : true,
            "config-opts" : [
-                "-Ddocumentation=false"
+                "--disable-documentation"
            ],
            "sources" : [
                {
                    "type" : "git",
-                    "url" : "https://gitlab.freedesktop.org/wayland/wayland.git"
+                    "url" : "https://github.com/wayland-project/wayland.git"
                }
            ]
        },
        {
-            "name" : "graphene",
-            "buildsystem" : "meson",
-            "builddir" : true,
-            "config-opts" : [
+            "name": "graphene",
+            "buildsystem": "meson",
+            "builddir": true,
+            "config-opts": [
                "--libdir=/app/lib",
                "-Dtests=false",
                "-Dbenchmarks=false"
            ],
-            "sources" : [
+            "sources": [
                {
-                    "type" : "git",
-                    "url" : "https://github.com/ebassi/graphene.git"
+                    "type": "git",
+                    "url": "https://github.com/ebassi/graphene.git"
                }
            ]
        },
@@ -67,7 +58,7 @@
            "name" : "libsass",
            "buildsystem" : "meson",
            "builddir" : true,
-            "config-opts" : [
+            "config-opts": [
                "--libdir=/app/lib"
            ],
            "sources" : [
@@ -82,7 +73,7 @@
            "name" : "sassc",
            "buildsystem" : "meson",
            "builddir" : true,
-            "config-opts" : [
+            "config-opts": [
                "--libdir=/app/lib"
            ],
            "sources" : [
@@ -94,41 +85,18 @@
            ]
        },
        {
-            "name" : "pango",
-            "buildsystem" : "meson",
-            "builddir" : true,
-            "config-opts" : [
+            "name": "gtk",
+            "buildsystem": "meson",
+            "builddir": true,
+            "config-opts": [
                "--libdir=/app/lib"
            ],
-            "sources" : [
+            "sources": [
                {
-                    "type" : "git",
-                    "url" : "https://gitlab.gnome.org/GNOME/pango.git",
-                    "branch" : "main"
-                }
-            ]
-        },
-        {
-            "name" : "gtk",
-            "buildsystem" : "meson",
-            "builddir" : true,
-            "config-opts" : [
-                "--libdir=/app/lib",
-                "-Denable_vulkan=no",
-                "-Dbuildtype=debugoptimized",
-                "-Dprofile=devel"
-            ],
-            "sources" : [
-                {
-                    "type" : "git",
-                    "url" : "https://gitlab.gnome.org/GNOME/gtk.git",
-                    "branch" : "main"
+                    "type": "git",
+                    "url": "https://gitlab.gnome.org/GNOME/gtk.git"
                }
            ]
        }
-    ],
-    "build-options" : {
-        "env" : {
-        }
-    }
+    ]
 }
--- a/build-aux/flatpak/org.gtk.WidgetFactory4.json
+++ b/build-aux/flatpak/org.gtk.WidgetFactory4.json
@@ -35,15 +35,15 @@
    "modules" : [
        {
            "name" : "wayland",
-            "buildsystem" : "meson",
+            "buildsystem" : "autotools",
            "builddir" : true,
            "config-opts" : [
-                "-Ddocumentation=false"
+                "--disable-documentation"
            ],
            "sources" : [
                {
                    "type" : "git",
-                    "url" : "https://gitlab.freedesktop.org/wayland/wayland.git"
+                    "url" : "https://github.com/wayland-project/wayland.git"
                }
            ]
        },
@@ -94,7 +94,7 @@
            ]
        },
        {
-            "name" : "pango",
+            "name" : "gtk",
            "buildsystem" : "meson",
            "builddir" : true,
            "config-opts" : [
@@ -103,36 +103,14 @@
            "sources" : [
                {
                    "type" : "git",
-                    "url" : "https://gitlab.gnome.org/GNOME/pango.git",
-                    "branch" : "main"
-                }
-            ]
-        },
-        {
-            "name" : "gtk",
-            "buildsystem" : "meson",
-            "builddir" : true,
-            "config-opts" : [
-                "--libdir=/app/lib",
-                "-Denable_vulkan=no",
-                "-Dbuildtype=debugoptimized",
-                "-Dprofile=devel"
-            ],
-            "sources" : [
-                {
-                    "type" : "git",
-                    "url" : "https://gitlab.gnome.org/GNOME/gtk.git",
-                    "branch" : "main"
+                    "url" : "https://gitlab.gnome.org/GNOME/gtk.git"
                }
            ]
        }
    ],
    "build-options" : {
        "env" : {
-            "DBUS_SESSION_BUS_ADDRESS" : "''",
-            "GSK_RENDERER" : "opengl",
-            "GDK_DEBUG" : "vulkan-disable",
-            "G_ENABLE_DEBUG" : "true"
+            "DBUS_SESSION_BUS_ADDRESS" : "''"
        }
    }
 }
--- a/build-aux/meson/dist-data.py
+++ b/build-aux/meson/dist-data.py
@@ -1,39 +0,0 @@
-#!/usr/bin/env python3
-
-import os
-import shutil
-import subprocess
-
-from pathlib import PurePath
-
-
-stylesheets = [
-    'gtk/theme/Default/Default-light.css',
-    'gtk/theme/Default/Default-dark.css',
-    'gtk/theme/Default/Default-hc.css',
-    'gtk/theme/Default/Default-hc-dark.css',
-]
-
-references = [
-    'docs/reference/gtk/gtk4',
-    'docs/reference/gsk/gsk4',
-    'docs/reference/gdk/gdk4',
-    'docs/reference/gdk/gdk4-wayland',
-    'docs/reference/gdk/gdk4-x11',
-]
-
-sourceroot = os.environ.get('MESON_SOURCE_ROOT')
-buildroot = os.environ.get('MESON_BUILD_ROOT')
-distroot = os.environ.get('MESON_DIST_ROOT')
-
-for stylesheet in stylesheets:
-    stylesheet_path = PurePath(stylesheet)
-    src = PurePath(sourceroot, stylesheet_path.with_suffix('.scss'))
-    dst = PurePath(distroot, stylesheet_path)
-    subprocess.call(['sassc', '-a', '-M', '-t', 'compact', src, dst])
-
-for reference in references:
-    src_path = os.path.join(buildroot, reference)
-    if os.path.isdir(src_path):
-        dst_path = os.path.join(distroot, reference)
-        shutil.copytree(src_path, dst_path)
--- a/build-aux/meson/gen-demo-header.py
+++ b/build-aux/meson/gen-demo-header.py
@@ -1,26 +0,0 @@
-#!/usr/bin/env python3
-
-import os
-import subprocess
-import sys
-
-repodir = sys.argv[1]
-profile = sys.argv[2]
-
-sys.stdout.write("/* This file is auto-generated. Do not edit. */\n")
-sys.stdout.write("#pragma once\n")
-sys.stdout.write("\n")
-sys.stdout.write(f"#define PROFILE \"{profile}\"\n")
-
-short_sha = os.environ.get('CI_COMMIT_SHORT_SHA')
-if short_sha is None:
-    cmd = ["git", "-C", repodir, "rev-parse", "--short", "HEAD"]
-    try:
-        with subprocess.Popen(cmd, stdout=subprocess.PIPE) as p:
-            short_sha = p.stdout.read().decode('utf-8').rstrip("\n")
-    except FileNotFoundError:
-        short_sha = ''
-        if profile != 'default':
-            short_sha = 'devel'
-
-sys.stdout.write(f"#define VCS_TAG \"{short_sha}\"\n")
--- a/build-aux/meson/post-install.py
+++ b/build-aux/meson/post-install.py
@@ -1,21 +1,20 @@
 #!/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]
+
+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_bindir = sys.argv[5]
-
-    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...')
+
+    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...')
    glib_compile_schemas = subprocess.check_output(['pkg-config',
                                                   '--variable=glib_compile_schemas',
                                                   'gio-2.0']).strip()
@@ -23,14 +22,13 @@ if 'DESTDIR' not in os.environ:
        # pkg-config variables only available since GLib 2.62.0.
        glib_compile_schemas = 'glib-compile-schemas'
    subprocess.call([glib_compile_schemas,
-                    os.path.join(gtk_datadir, 'glib-2.0', 'schemas')])
-
-    print('Updating icon cache...')
-    update_icon_cache = os.path.join(gtk_bindir, 'gtk4-update-icon-cache')
-    subprocess.call([update_icon_cache, '-q', '-t' ,'-f',
-                    os.path.join(gtk_datadir, 'icons', 'hicolor')])
-
-    print('Updating module cache for print backends...')
+                    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)
    gio_querymodules = subprocess.check_output(['pkg-config',
                                                '--variable=gio_querymodules',
@@ -39,7 +37,7 @@ if 'DESTDIR' not in os.environ:
        # pkg-config variables only available since GLib 2.62.0.
        gio_querymodules = 'gio-querymodules'
    subprocess.call([gio_querymodules, gtk_printmodule_dir])
-
-    print('Updating module cache for input methods...')
+
+    print('Updating module cache for input methods...')
    os.makedirs(gtk_immodule_dir, exist_ok=True)
    subprocess.call([gio_querymodules, gtk_immodule_dir])
--- a/config.h.meson
+++ b/config.h.meson
@@ -0,0 +1,277 @@
+/* config.h.in.  Generated from configure.ac by autoheader.  */
+
+/* always defined to indicate that i18n is enabled */
+#define ENABLE_NLS 1
+
+/* The prefix for our gettext translation domains. */
+#mesondefine GETTEXT_PACKAGE
+
+/* Disable deprecation warnings from glib */
+#mesondefine GLIB_DISABLE_DEPRECATION_WARNINGS
+
+/* Define the location where the catalogs will be installed */
+#mesondefine GTK_LOCALEDIR
+
+/* Define to 1 if you have the `bind_textdomain_codeset' function. */
+#mesondefine HAVE_BIND_TEXTDOMAIN_CODESET
+
+/* Have the cloudproviders library */
+#mesondefine HAVE_CLOUDPROVIDERS
+
+/* define if we have colord */
+#mesondefine HAVE_COLORD
+
+/* Define to 1 if you have the <crt_externs.h> header file. */
+#mesondefine HAVE_CRT_EXTERNS_H
+
+/* Define to 1 if you have the `dcgettext' function. */
+#mesondefine HAVE_DCGETTEXT
+
+/* 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
+
+/* Define to 1 if you have the `getpagesize' function. */
+#mesondefine HAVE_GETPAGESIZE
+
+/* Define to 1 if you have the `getresuid' function. */
+#mesondefine HAVE_GETRESUID
+
+/* 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 <inttypes.h> header file. */
+#mesondefine HAVE_INTTYPES_H
+
+/* Define to 1 if the system has the type `IPrintDialogCallback'. */
+#mesondefine HAVE_IPRINTDIALOGCALLBACK
+
+/* Define to 1 if you have the <locale.h> header file. */
+#mesondefine HAVE_LOCALE_H
+
+/* Define to 1 if you have the `lstat' function. */
+#mesondefine HAVE_LSTAT
+
+/* Define to 1 if you have the `mallinfo' function. */
+#mesondefine HAVE_MALLINFO
+
+/* Define to 1 if you have the <memory.h> header file. */
+#mesondefine HAVE_MEMORY_H
+
+/* Define to 1 if you have the `mkstemp' function. */
+#mesondefine HAVE_MKSTEMP
+
+/* Define to 1 if you have a working `mmap' system call. */
+#mesondefine HAVE_MMAP
+
+/* Define to 1 if you have the `posix_fallocate' function. */
+#mesondefine HAVE_POSIX_FALLOCATE
+
+/* Have the Xrandr extension library */
+#mesondefine HAVE_RANDR
+
+/* Have the Xrandr 1.5 extension library */
+#mesondefine HAVE_RANDR15
+
+/* Define to 1 if you have the `sincos' function. */
+#mesondefine HAVE_SINCOS
+
+/* Define to 1 if you have the <stdint.h> header file. */
+#mesondefine HAVE_STDINT_H
+
+/* Define to 1 if you have the <stdlib.h> header file. */
+#mesondefine HAVE_STDLIB_H
+
+/* Define to 1 if you have the <strings.h> header file. */
+#mesondefine HAVE_STRINGS_H
+
+/* Define to 1 if you have the <string.h> header file. */
+#mesondefine HAVE_STRING_H
+
+/* Define to 1 if you have the <sys/mman.h> header file. */
+#mesondefine HAVE_SYS_MMAN_H
+
+/* Define to 1 if you have the <sys/param.h> header file. */
+#mesondefine HAVE_SYS_PARAM_H
+
+/* Have the sysprof-capture library */
+#mesondefine HAVE_SYSPROF_CAPTURE
+
+/* Define to 1 if you have the <sys/stat.h> header file. */
+#mesondefine HAVE_SYS_STAT_H
+
+/* Define to 1 if you have the <sys/time.h> header file. */
+#mesondefine HAVE_SYS_TIME_H
+
+/* Define to 1 if you have the <sys/types.h> header file. */
+#mesondefine HAVE_SYS_TYPES_H
+
+/* Define to 1 if you have the <unistd.h> header file. */
+#mesondefine HAVE_UNISTD_H
+
+/* Have the XCOMPOSITE X extension */
+#mesondefine HAVE_XCOMPOSITE
+
+/* Have the Xcursor library */
+#mesondefine HAVE_XCURSOR
+
+/* Have the XDAMAGE X extension */
+#mesondefine HAVE_XDAMAGE
+
+/* Have the XFIXES X extension */
+#mesondefine HAVE_XFIXES
+
+/* Define to 1 if XFree Xinerama is available */
+#mesondefine HAVE_XFREE_XINERAMA
+
+/* Have XGenericEvent */
+#mesondefine HAVE_XGENERICEVENTS
+
+/* Define to use XKB extension */
+#mesondefine HAVE_XKB
+
+/* Have the SYNC extension library */
+#mesondefine HAVE_XSYNC
+
+/* Define to 1 if you have the `_lock_file' function */
+#mesondefine HAVE__LOCK_FILE
+
+/* Define to 1 if you have the `flockfile' function */
+#mesondefine HAVE_FLOCKFILE
+
+/* Define if _NL_MEASUREMENT_MEASUREMENT is available */
+#mesondefine HAVE__NL_MEASUREMENT_MEASUREMENT
+
+/* Define if _NL_PAPER_HEIGHT is available */
+#mesondefine HAVE__NL_PAPER_HEIGHT
+
+/* Define if _NL_PAPER_WIDTH is available */
+#mesondefine HAVE__NL_PAPER_WIDTH
+
+/* Define if _NL_TIME_FIRST_WEEKDAY is available */
+#mesondefine HAVE__NL_TIME_FIRST_WEEKDAY
+
+/* Define to the sub-directory where libtool stores uninstalled libraries. */
+#mesondefine LT_OBJDIR
+
+/* Define to 1 if your C compiler doesn't accept -c and -o together. */
+#mesondefine NO_MINUS_C_MINUS_O
+
+/* Define to the address where bug reports for this package should be sent. */
+#mesondefine PACKAGE_BUGREPORT
+
+/* Define to the full name of this package. */
+#mesondefine PACKAGE_NAME
+
+/* Define to the full name and version of this package. */
+#mesondefine PACKAGE_STRING
+
+/* Define to the one symbol short name of this package. */
+#mesondefine PACKAGE_TARNAME
+
+/* Define to the home page for this package. */
+#mesondefine PACKAGE_URL
+
+/* Define to the version of this package. */
+#mesondefine PACKAGE_VERSION
+
+/* Use NSBundle functions to determine load paths for libraries, translations,
+   etc. */
+#mesondefine QUARTZ_RELOCATION
+
+/* Define to 1 if you have the ANSI C header files. */
+#mesondefine STDC_HEADERS
+
+/* Enable extensions on AIX 3, Interix.  */
+#ifndef _ALL_SOURCE
+# undef _ALL_SOURCE
+#endif
+/* Enable GNU extensions on systems that have them.  */
+#ifndef _GNU_SOURCE
+# undef _GNU_SOURCE
+#endif
+/* Enable threading extensions on Solaris.  */
+#ifndef _POSIX_PTHREAD_SEMANTICS
+# undef _POSIX_PTHREAD_SEMANTICS
+#endif
+/* Enable extensions on HP NonStop.  */
+#ifndef _TANDEM_SOURCE
+# undef _TANDEM_SOURCE
+#endif
+/* Enable general extensions on Solaris.  */
+#ifndef __EXTENSIONS__
+# undef __EXTENSIONS__
+#endif
+
+
+/* Define to 1 if XInput 2.2 is available */
+#mesondefine XINPUT_2_2
+
+/* Define to 1 if the X Window System is missing or not being used. */
+#mesondefine X_DISPLAY_MISSING
+
+/* Enable large inode numbers on Mac OS X 10.5.  */
+#ifndef _DARWIN_USE_64_BIT_INODE
+# define _DARWIN_USE_64_BIT_INODE 1
+#endif
+
+/* Number of bits in a file offset, on hosts where this is settable. */
+#mesondefine _FILE_OFFSET_BITS
+
+/* defines how to decorate public symbols while building */
+#mesondefine _GDK_EXTERN
+
+/* Define for large files, on AIX-style hosts. */
+#mesondefine _LARGE_FILES
+
+/* Define to 1 if on MINIX. */
+#mesondefine _MINIX
+
+/* Define to 2 if the system does not provide POSIX.1 features except with
+   this defined. */
+#mesondefine _POSIX_1_SOURCE
+
+/* Define to 1 if you need to in order for `stat' and other things to work. */
+#mesondefine _POSIX_SOURCE
+
+/* Define to `int' if <sys/types.h> doesn't define. */
+#mesondefine gid_t
+
+/* Define to `int' if <sys/types.h> doesn't define. */
+#mesondefine uid_t
+
+/* 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
+
+#mesondefine GTK_DATADIR
+
+#mesondefine GTK_LIBDIR
+
+#mesondefine GTK_PRINT_BACKENDS
+
+#mesondefine HAVE_CAIRO_SCRIPT_INTERPRETER
+
+#mesondefine HAVE_HARFBUZZ
+
+#mesondefine HAVE_PANGOFT
+
+#mesondefine ISO_CODES_PREFIX
+
+/* Define if tracker3 is available */
+#mesondefine HAVE_TRACKER3
--- a/demos/constraint-editor/constraint-editor-window.c
+++ b/demos/constraint-editor/constraint-editor-window.c
@@ -36,7 +36,7 @@ struct _ConstraintEditorWindow
 G_DEFINE_TYPE(ConstraintEditorWindow, constraint_editor_window, GTK_TYPE_APPLICATION_WINDOW);

 static GtkConstraintTarget *
-find_target (GListModel          *model,
+find_target (GListModel *model,
             GtkConstraintTarget *orig)
 {
  const char *name;
@@ -163,30 +163,20 @@ constraint_editor_window_load (ConstraintEditorWindow *self,
      GtkConstraint *clone;
      GtkConstraintTarget *target;
      GtkConstraintTarget *source;
-      GtkConstraintAttribute source_attr;

      item = g_list_model_get_item (list, i);
      constraint = GTK_CONSTRAINT (item);

      target = gtk_constraint_get_target (constraint);
      source = gtk_constraint_get_source (constraint);
-      source_attr = gtk_constraint_get_source_attribute (constraint);
-
-      if (source == NULL && source_attr == GTK_CONSTRAINT_ATTRIBUTE_NONE)
-        clone = gtk_constraint_new_constant (find_target (constraint_view_get_model (CONSTRAINT_VIEW (self->view)), target),
+      clone = gtk_constraint_new (find_target (constraint_view_get_model (CONSTRAINT_VIEW (self->view)), target),
                                  gtk_constraint_get_target_attribute (constraint),
                                  gtk_constraint_get_relation (constraint),
+                                  find_target (constraint_view_get_model (CONSTRAINT_VIEW (self->view)), source),
+                                  gtk_constraint_get_target_attribute (constraint),
+                                  gtk_constraint_get_multiplier (constraint),
                                  gtk_constraint_get_constant (constraint),
                                  gtk_constraint_get_strength (constraint));
-      else
-        clone = gtk_constraint_new (find_target (constraint_view_get_model (CONSTRAINT_VIEW (self->view)), target),
-                                    gtk_constraint_get_target_attribute (constraint),
-                                    gtk_constraint_get_relation (constraint),
-                                    find_target (constraint_view_get_model (CONSTRAINT_VIEW (self->view)), source),
-                                    source_attr,
-                                    gtk_constraint_get_multiplier (constraint),
-                                    gtk_constraint_get_constant (constraint),
-                                    gtk_constraint_get_strength (constraint));

      constraint_view_add_constraint (CONSTRAINT_VIEW (self->view), clone);

@@ -310,7 +300,7 @@ save_response_cb (GtkNativeDialog        *dialog,
      model = constraint_view_get_model (CONSTRAINT_VIEW (self->view));
      text = serialize_model (model);
      file = gtk_file_chooser_get_file (GTK_FILE_CHOOSER (dialog));
-      g_file_replace_contents (file, text, strlen (text),
+      g_file_replace_contents (file, text, -1,
                               NULL, FALSE,
                               G_FILE_CREATE_NONE,
                               NULL,
--- a/demos/constraint-editor/constraint-editor-window.ui
+++ b/demos/constraint-editor/constraint-editor-window.ui
@@ -1,6 +1,9 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <interface>
  <template class="ConstraintEditorWindow" parent="GtkApplicationWindow">
+    <style>
+      <class name="devel"/>
+    </style>
    <property name="title" translatable="yes">GTK Constraint Editor</property>
    <property name="default-width">1024</property>
    <property name="default-height">768</property>
--- a/demos/constraint-editor/constraint-editor.c
+++ b/demos/constraint-editor/constraint-editor.c
@@ -142,9 +142,6 @@ get_target (GListModel *model,
 {
  int i;

-  if (id == NULL)
-    return NULL;
-
  if (strcmp ("super", id) == 0)
    return NULL;

@@ -215,22 +212,6 @@ get_relation_nick (GtkConstraintRelation relation)
  return nick;
 }

-static const char *
-get_relation_display_name (GtkConstraintRelation relation)
-{
-  switch (relation)
-    {
-    case GTK_CONSTRAINT_RELATION_LE:
-      return "≤";
-    case GTK_CONSTRAINT_RELATION_EQ:
-      return "=";
-    case GTK_CONSTRAINT_RELATION_GE:
-      return "≥";
-    default:
-      return "?";
-    }
-}
-
 static GtkConstraintStrength
 get_strength (const char *id)
 {
@@ -350,7 +331,6 @@ source_attr_changed (ConstraintEditor *editor)
    {
      gtk_widget_set_sensitive (editor->source, TRUE);
      gtk_widget_set_sensitive (editor->multiplier, TRUE);
-      gtk_editable_set_text (GTK_EDITABLE (editor->multiplier), "1");
    }
 }

@@ -367,7 +347,7 @@ constraint_editor_constraint_to_string (GtkConstraint *constraint)

  name = get_target_name (gtk_constraint_get_target (constraint));
  attr = get_attr_nick (gtk_constraint_get_target_attribute (constraint));
-  relation = get_relation_display_name (gtk_constraint_get_relation (constraint));
+  relation = get_relation_nick (gtk_constraint_get_relation (constraint));

  if (name == NULL)
    name = "[ ]";
@@ -461,12 +441,8 @@ update_preview (ConstraintEditor *editor)
 static void
 update_button (ConstraintEditor *editor)
 {
-  const char *target = gtk_combo_box_get_active_id (GTK_COMBO_BOX (editor->target));
-  const char *source = gtk_combo_box_get_active_id (GTK_COMBO_BOX (editor->source));
-  const char *source_attr = gtk_combo_box_get_active_id (GTK_COMBO_BOX (editor->source_attr));
-
-  if (target &&
-      (source || (source_attr && get_target_attr (source_attr) == GTK_CONSTRAINT_ATTRIBUTE_NONE)))
+  if (gtk_combo_box_get_active_id (GTK_COMBO_BOX (editor->target)) != NULL &&
+      gtk_combo_box_get_active_id (GTK_COMBO_BOX (editor->source)) != NULL)
    gtk_widget_set_sensitive (editor->button, TRUE);
  else
    gtk_widget_set_sensitive (editor->button, FALSE);
--- a/demos/constraint-editor/constraint-editor.ui
+++ b/demos/constraint-editor/constraint-editor.ui
@@ -13,8 +13,8 @@
          <object class="GtkLabel">
            <property name="label">Target</property>
            <layout>
-              <property name="column">0</property>
-              <property name="row">1</property>
+              <property name="left-attach">0</property>
+              <property name="top-attach">1</property>
            </layout>
          </object>
        </child>
@@ -23,8 +23,8 @@
            <signal name="changed" handler="update_preview" swapped="yes"/>
            <signal name="changed" handler="update_button" swapped="yes"/>
            <layout>
-              <property name="column">1</property>
-              <property name="row">1</property>
+              <property name="left-attach">1</property>
+              <property name="top-attach">1</property>
            </layout>
          </object>
        </child>
@@ -32,8 +32,8 @@
          <object class="GtkComboBoxText" id="target_attr">
            <signal name="changed" handler="update_preview" swapped="yes"/>
            <layout>
-              <property name="column">2</property>
-              <property name="row">1</property>
+              <property name="left-attach">2</property>
+              <property name="top-attach">1</property>
            </layout>
          </object>
        </child>
@@ -41,8 +41,8 @@
          <object class="GtkLabel">
            <property name="label">Relation</property>
            <layout>
-              <property name="column">0</property>
-              <property name="row">2</property>
+              <property name="left-attach">0</property>
+              <property name="top-attach">2</property>
            </layout>
          </object>
        </child>
@@ -50,8 +50,8 @@
          <object class="GtkComboBoxText" id="relation">
            <signal name="changed" handler="update_preview" swapped="yes"/>
            <layout>
-              <property name="column">1</property>
-              <property name="row">2</property>
+              <property name="left-attach">1</property>
+              <property name="top-attach">2</property>
            </layout>
          </object>
        </child>
@@ -59,8 +59,8 @@
          <object class="GtkLabel">
            <property name="label">Source</property>
            <layout>
-              <property name="column">0</property>
-              <property name="row">3</property>
+              <property name="left-attach">0</property>
+              <property name="top-attach">3</property>
            </layout>
          </object>
        </child>
@@ -69,8 +69,8 @@
            <signal name="changed" handler="update_preview" swapped="yes"/>
            <signal name="changed" handler="update_button" swapped="yes"/>
            <layout>
-              <property name="column">1</property>
-              <property name="row">3</property>
+              <property name="left-attach">1</property>
+              <property name="top-attach">3</property>
            </layout>
          </object>
        </child>
@@ -78,10 +78,9 @@
          <object class="GtkComboBoxText" id="source_attr">
            <signal name="changed" handler="update_preview" swapped="yes"/>
            <signal name="changed" handler="source_attr_changed" swapped="yes"/>
-            <signal name="changed" handler="update_button" swapped="yes"/>
            <layout>
-              <property name="column">2</property>
-              <property name="row">3</property>
+              <property name="left-attach">2</property>
+              <property name="top-attach">3</property>
            </layout>
          </object>
        </child>
@@ -89,8 +88,8 @@
          <object class="GtkLabel">
            <property name="label">Multiplier</property>
            <layout>
-              <property name="column">0</property>
-              <property name="row">4</property>
+              <property name="left-attach">0</property>
+              <property name="top-attach">4</property>
            </layout>
          </object>
        </child>
@@ -98,8 +97,8 @@
          <object class="GtkEntry" id="multiplier">
            <signal name="changed" handler="update_preview" swapped="yes"/>
            <layout>
-              <property name="column">1</property>
-              <property name="row">4</property>
+              <property name="left-attach">1</property>
+              <property name="top-attach">4</property>
            </layout>
          </object>
        </child>
@@ -107,8 +106,8 @@
          <object class="GtkLabel">
            <property name="label">Constant</property>
            <layout>
-              <property name="column">0</property>
-              <property name="row">5</property>
+              <property name="left-attach">0</property>
+              <property name="top-attach">5</property>
            </layout>
          </object>
        </child>
@@ -116,8 +115,8 @@
          <object class="GtkEntry" id="constant">
            <signal name="changed" handler="update_preview" swapped="yes"/>
            <layout>
-              <property name="column">1</property>
-              <property name="row">5</property>
+              <property name="left-attach">1</property>
+              <property name="top-attach">5</property>
            </layout>
          </object>
        </child>
@@ -125,16 +124,16 @@
          <object class="GtkLabel">
            <property name="label">Strength</property>
            <layout>
-              <property name="column">0</property>
-              <property name="row">6</property>
+              <property name="left-attach">0</property>
+              <property name="top-attach">6</property>
            </layout>
          </object>
        </child>
        <child>
          <object class="GtkComboBoxText" id="strength">
            <layout>
-              <property name="column">1</property>
-              <property name="row">6</property>
+              <property name="left-attach">1</property>
+              <property name="top-attach">6</property>
            </layout>
          </object>
        </child>
@@ -142,8 +141,8 @@
          <object class="GtkLabel" id="preview">
            <property name="xalign">0</property>
            <layout>
-              <property name="column">1</property>
-              <property name="row">7</property>
+              <property name="left-attach">1</property>
+              <property name="top-attach">7</property>
              <property name="column-span">2</property>
            </layout>
            <attributes>
@@ -156,8 +155,8 @@
            <property name="label">Create</property>
            <signal name="clicked" handler="create_constraint"/>
            <layout>
-              <property name="column">2</property>
-              <property name="row">8</property>
+              <property name="left-attach">2</property>
+              <property name="top-attach">8</property>
            </layout>
          </object>
        </child>
--- a/demos/constraint-editor/constraint-view.c
+++ b/demos/constraint-editor/constraint-view.c
@@ -177,12 +177,16 @@ constraint_view_init (ConstraintView *self)
  guides = gtk_constraint_layout_observe_guides (GTK_CONSTRAINT_LAYOUT (manager));

  all_constraints = gtk_constraint_layout_observe_constraints (GTK_CONSTRAINT_LAYOUT (manager));
-  filter = GTK_FILTER (gtk_custom_filter_new (omit_internal, NULL, NULL));
+  filter = gtk_custom_filter_new (omit_internal, NULL, NULL);
  constraints = (GListModel *)gtk_filter_list_model_new (all_constraints, filter);
+  g_object_unref (filter);
+  g_object_unref (all_constraints);

  all_children = gtk_widget_observe_children (GTK_WIDGET (self));
-  filter = GTK_FILTER (gtk_custom_filter_new (omit_internal, NULL, NULL));
+  filter = gtk_custom_filter_new (omit_internal, NULL, NULL);
  children = (GListModel *)gtk_filter_list_model_new (all_children, filter);
+  g_object_unref (filter);
+  g_object_unref (all_children);

  list = g_list_store_new (G_TYPE_LIST_MODEL);
  g_list_store_append (list, children);
--- a/demos/constraint-editor/guide-editor.ui
+++ b/demos/constraint-editor/guide-editor.ui
@@ -55,8 +55,8 @@
          <object class="GtkLabel">
            <property name="label">Name</property>
            <layout>
-              <property name="column">0</property>
-              <property name="row">0</property>
+              <property name="left-attach">0</property>
+              <property name="top-attach">0</property>
            </layout>
          </object>
        </child>
@@ -64,8 +64,8 @@
          <object class="GtkEntry" id="name">
            <property name="max-width-chars">20</property>
            <layout>
-              <property name="column">1</property>
-              <property name="row">0</property>
+              <property name="left-attach">1</property>
+              <property name="top-attach">0</property>
              <property name="column-span">2</property>
            </layout>
          </object>
@@ -74,8 +74,8 @@
          <object class="GtkLabel">
            <property name="label">Min Size</property>
            <layout>
-              <property name="column">0</property>
-              <property name="row">1</property>
+              <property name="left-attach">0</property>
+              <property name="top-attach">1</property>
            </layout>
          </object>
        </child>
@@ -84,8 +84,8 @@
            <property name="adjustment">min_width_adj</property>
            <property name="max-width-chars">5</property>
            <layout>
-              <property name="column">1</property>
-              <property name="row">1</property>
+              <property name="left-attach">1</property>
+              <property name="top-attach">1</property>
            </layout>
          </object>
        </child>
@@ -94,8 +94,8 @@
            <property name="adjustment">min_height_adj</property>
            <property name="max-width-chars">5</property>
            <layout>
-              <property name="column">2</property>
-              <property name="row">1</property>
+              <property name="left-attach">2</property>
+              <property name="top-attach">1</property>
            </layout>
          </object>
        </child>
@@ -103,8 +103,8 @@
          <object class="GtkLabel">
            <property name="label">Nat Size</property>
            <layout>
-              <property name="column">0</property>
-              <property name="row">2</property>
+              <property name="left-attach">0</property>
+              <property name="top-attach">2</property>
            </layout>
          </object>
        </child>
@@ -113,8 +113,8 @@
            <property name="adjustment">nat_width_adj</property>
            <property name="max-width-chars">5</property>
            <layout>
-              <property name="column">1</property>
-              <property name="row">2</property>
+              <property name="left-attach">1</property>
+              <property name="top-attach">2</property>
            </layout>
          </object>
        </child>
@@ -123,8 +123,8 @@
            <property name="adjustment">nat_height_adj</property>
            <property name="max-width-chars">5</property>
            <layout>
-              <property name="column">2</property>
-              <property name="row">2</property>
+              <property name="left-attach">2</property>
+              <property name="top-attach">2</property>
            </layout>
          </object>
        </child>
@@ -132,8 +132,8 @@
          <object class="GtkLabel">
            <property name="label">Max Size</property>
            <layout>
-              <property name="column">0</property>
-              <property name="row">3</property>
+              <property name="left-attach">0</property>
+              <property name="top-attach">3</property>
            </layout>
          </object>
        </child>
@@ -142,8 +142,8 @@
            <property name="adjustment">max_width_adj</property>
            <property name="max-width-chars">5</property>
            <layout>
-              <property name="column">1</property>
-              <property name="row">3</property>
+              <property name="left-attach">1</property>
+              <property name="top-attach">3</property>
            </layout>
          </object>
        </child>
@@ -152,8 +152,8 @@
            <property name="adjustment">max_height_adj</property>
            <property name="max-width-chars">5</property>
            <layout>
-              <property name="column">2</property>
-              <property name="row">3</property>
+              <property name="left-attach">2</property>
+              <property name="top-attach">3</property>
            </layout>
          </object>
        </child>
@@ -161,16 +161,16 @@
          <object class="GtkLabel">
            <property name="label">Strength</property>
            <layout>
-              <property name="column">0</property>
-              <property name="row">4</property>
+              <property name="left-attach">0</property>
+              <property name="top-attach">4</property>
            </layout>
          </object>
        </child>
        <child>
          <object class="GtkComboBoxText" id="strength">
            <layout>
-              <property name="column">1</property>
-              <property name="row">4</property>
+              <property name="left-attach">1</property>
+              <property name="top-attach">4</property>
              <property name="column-span">2</property>
            </layout>
          </object>
@@ -180,8 +180,8 @@
            <property name="label">Create</property>
            <signal name="clicked" handler="create_guide"/>
            <layout>
-              <property name="column">2</property>
-              <property name="row">5</property>
+              <property name="left-attach">2</property>
+              <property name="top-attach">5</property>
            </layout>
          </object>
        </child>
--- a/demos/constraint-editor/meson.build
+++ b/demos/constraint-editor/meson.build
@@ -8,16 +8,14 @@ constraint_editor_sources = [
 ]

 constraint_editor_resources = gnome.compile_resources('constraint_editor_resources',
-  'constraint-editor.gresource.xml',
-  source_dir: '.',
-)
+                                                      'constraint-editor.gresource.xml',
+                                                      source_dir: '.')

 executable('gtk4-constraint-editor',
-  sources: [ constraint_editor_sources, constraint_editor_resources, ],
-  c_args: common_cflags,
-  dependencies: libgtk_dep,
-  include_directories: confinc,
-  gui_app: true,
-  link_args: extra_demo_ldflags,
-  install: false,
-)
+           constraint_editor_sources, constraint_editor_resources,
+           c_args: common_cflags,
+           dependencies: libgtk_dep,
+           include_directories: confinc,
+           gui_app: true,
+           link_args: extra_demo_ldflags,
+           install: false)
--- a/demos/gtk-demo/alienplanet.glsl
+++ b/demos/gtk-demo/alienplanet.glsl
@@ -1,345 +0,0 @@
-// Originally from: https://www.shadertoy.com/view/wsjBD3
-// License CC0: A battered alien planet
-//  Been experimenting with space inspired shaders
-
-#define PI  3.141592654
-#define TAU (2.0*PI)
-
-#define TOLERANCE       0.00001
-#define MAX_ITER        65
-#define MIN_DISTANCE    0.01
-#define MAX_DISTANCE    9.0
-
-const vec3  skyCol1       = vec3(0.35, 0.45, 0.6);
-const vec3  skyCol2       = vec3(0.4, 0.7, 1.0);
-const vec3  skyCol3       = pow(skyCol1, vec3(0.25));
-const vec3  sunCol1       = vec3(1.0,0.6,0.4);
-const vec3  sunCol2       = vec3(1.0,0.9,0.7);
-const vec3  smallSunCol1  = vec3(1.0,0.5,0.25)*0.5;
-const vec3  smallSunCol2  = vec3(1.0,0.5,0.25)*0.5;
-const vec3  mountainColor = 1.0*sqrt(vec3(0.95, 0.65, 0.45));
-const float cellWidth     = 1.0;
-const vec4  planet        = vec4(80.0, -20.0, 100.0, 50.0)*1000.0;
-
-void rot(inout vec2 p, float a) {
-  float c = cos(a);
-  float s = sin(a);
-  p = vec2(p.x*c + p.y*s, -p.x*s + p.y*c);
-}
-
-vec2 mod2(inout vec2 p, vec2 size) {
-  vec2 c = floor((p + size*0.5)/size);
-  p = mod(p + size*0.5,size) - size*0.5;
-  return c;
-}
-
-float circle(vec2 p, float r) {
-  return length(p) - r;
-}
-
-float egg(vec2 p, float ra, float rb) {
-  const float k = sqrt(3.0);
-  p.x = abs(p.x);
-  float r = ra - rb;
-  return ((p.y<0.0)       ? length(vec2(p.x,  p.y    )) - r :
-          (k*(p.x+r)<p.y) ? length(vec2(p.x,  p.y-k*r)) :
-                              length(vec2(p.x+r,p.y    )) - 2.0*r) - rb;
-}
-
-vec2 hash(vec2 p) {
-  p = vec2(dot (p, vec2 (127.1, 311.7)), dot (p, vec2 (269.5, 183.3)));
-  return -1. + 2.*fract (sin (p)*43758.5453123);
-}
-
-vec2 raySphere(vec3 ro, vec3 rd, vec4 sphere) {
-  vec3 center = sphere.xyz;
-  float radius = sphere.w;
-  vec3 m = ro - center.xyz;
-  float b = dot(m, rd);
-  float c = dot(m, m) - radius*radius;
-  if(c > 0.0 && b > 0.0) return vec2(-1.0, -1.0);
-  float discr = b * b - c;
-  if(discr < 0.0) return vec2(-1.0);
-  float normalMultiplier = 1.0;
-  float s = sqrt(discr);
-  float t0 = -b - s;
-  float t1 = -b + s;;
-  return vec2(t0, t1);
-}
-
-float noize1(vec2 p) {
-  vec2 n = mod2(p, vec2(cellWidth));
-  vec2 hh = hash(sqrt(2.0)*(n+1000.0));
-  hh.x *= hh.y;
-
-  float r = 0.225*cellWidth;
-
-  float d = circle(p, 2.0*r);
-
-  float h = hh.x*smoothstep(0.0, r, -d);
-
-  return h*0.25;
-}
-
-float noize2(vec2 p) {
-  vec2 n = mod2(p, vec2(cellWidth));
-  vec2 hh = hash(sqrt(2.0)*(n+1000.0));
-  hh.x *= hh.y;
-
-  rot(p, TAU*hh.y);
-  float r = 0.45*cellWidth;
-
-//  float d = circle(p, 1.0*r);
-  float d = egg(p, 0.75*r, 0.5*r*abs(hh.y));
-
-  float h = (hh.x)*smoothstep(0.0, r, -2.0*d);
-
-  return h*0.275;
-}
-
-
-float height(vec2 p, float dd, int mx) {
-  const float aa   = 0.45;
-  const float ff   = 2.03;
-  const float tt   = 1.2;
-  const float oo   = 3.93;
-  const float near = 0.25;
-  const float far  = 0.65;
-
-  float a = 1.0;
-  float o = 0.2;
-  float s = 0.0;
-  float d = 0.0;
-
-  int i = 0;
-
-  for (; i < 4;++i) {
-    float nn = a*noize2(p);
-    s += nn;
-    d += abs(a);
-    p += o;
-    a *= aa;
-    p *= ff;
-    o *= oo;
-    rot(p, tt);
-  }
-
-  float lod = s/d;
-
-  float rdd = dd/MAX_DISTANCE;
-  mx = int(mix(float(4), float(mx), step(rdd, far)));
-
-  for (; i < mx; ++i) {
-    float nn = a*noize1(p);
-    s += nn;
-    d += abs(a);
-    p += o;
-    a *= aa;
-    p *= ff;
-    o *= oo;
-    rot(p, tt);
-  }
-
-  float hid = (s/d);
-
-  return mix(hid, lod, smoothstep(near, far, rdd));
-}
-
-float loheight(vec2 p, float d) {
-  return height(p, d, 0);
-}
-
-float height(vec2 p, float d) {
-  return height(p, d, 6);
-}
-
-float hiheight(vec2 p, float d) {
-  return height(p, d, 8);
-}
-
-vec3 normal(vec2 p, float d) {
-  vec2 eps = vec2(0.00125, 0.0);
-
-  vec3 n;
-
-  n.x = (hiheight(p - eps.xy, d) - hiheight(p + eps.xy, d));
-  n.y = 2.0*eps.x;
-  n.z = (hiheight(p - eps.yx, d) - hiheight(p + eps.yx, d));
-
-  return normalize(n);
-}
-
-const float stepLength[] = float[](0.9, 0.25);
-
-
-float march(vec3 ro, vec3 rd, out int max_iter) {
-  float dt = 0.1;
-  float d = MIN_DISTANCE;
-  int currentStep = 0;
-  float lastd = d;
-  for (int i = 0; i < MAX_ITER; ++i)
-  {
-    vec3 p = ro + d*rd;
-    float h = height(p.xz, d);
-
-    if (d > MAX_DISTANCE) {
-      max_iter = i;
-      return MAX_DISTANCE;
-    }
-
-    float hd = p.y - h;
-
-    if (hd < TOLERANCE) {
-      ++currentStep;
-      if (currentStep >= stepLength.length()) {
-        max_iter = i;
-        return d;
-      }
-
-      d = lastd;
-      continue;
-    }
-
-    float sl = stepLength[currentStep];
-
-    dt = max(hd, TOLERANCE)*sl + 0.0025*d;
-    lastd = d;
-    d += dt;
-  }
-
-  max_iter = MAX_ITER;
-  return MAX_DISTANCE;
-}
-
-vec3 sunDirection() {
-  return normalize(vec3(-0.5, 0.085, 1.0));
-}
-
-vec3 smallSunDirection() {
-  return normalize(vec3(-0.2, -0.05, 1.0));
-}
-
-float psin(float f) {
-  return 0.5 + 0.5*sin(f);
-}
-
-vec3 skyColor(vec3 ro, vec3 rd) {
-  vec3 sunDir = sunDirection();
-  vec3 smallSunDir = smallSunDirection();
-
-  float sunDot = max(dot(rd, sunDir), 0.0);
-  float smallSunDot = max(dot(rd, smallSunDir), 0.0);
-
-  float angle = atan(rd.y, length(rd.xz))*2.0/PI;
-
-  vec3 skyCol = mix(mix(skyCol1, skyCol2, max(0.0, angle)), skyCol3, clamp(-angle*2.0, 0.0, 1.0));
-
-  vec3 sunCol = 0.5*sunCol1*pow(sunDot, 20.0) + 8.0*sunCol2*pow(sunDot, 2000.0);
-  vec3 smallSunCol = 0.5*smallSunCol1*pow(smallSunDot, 200.0) + 8.0*smallSunCol2*pow(smallSunDot, 20000.0);
-
-  vec3 dust = pow(sunCol2*mountainColor, vec3(1.75))*smoothstep(0.05, -0.1, rd.y)*0.5;
-
-  vec2 si = raySphere(ro, rd, planet);
-
-  vec3 planetSurface = ro + si.x*rd;
-  vec3 planetNormal = normalize(planetSurface - planet.xyz);
-  float planetDiff = max(dot(planetNormal, sunDir), 0.0);
-  float planetBorder = max(dot(planetNormal, -rd), 0.0);
-  float planetLat = (planetSurface.x+planetSurface.y)*0.0005;
-  vec3 planetCol = mix(1.3*vec3(0.9, 0.8, 0.7), 0.3*vec3(0.9, 0.8, 0.7), pow(psin(planetLat+1.0)*psin(sqrt(2.0)*planetLat+2.0)*psin(sqrt(3.5)*planetLat+3.0), 0.5));
-
-  vec3 final = vec3(0.0);
-
-  final += step(0.0, si.x)*pow(planetDiff, 0.75)*planetCol*smoothstep(-0.075, 0.0, rd.y)*smoothstep(0.0, 0.1, planetBorder);
-
-  final += skyCol + sunCol + smallSunCol + dust;
-
-  return final;
-}
-
-vec3 getColor(vec3 ro, vec3 rd) {
-  int max_iter = 0;
-  vec3 skyCol = skyColor(ro, rd);
-  vec3 col = vec3(0);
-
-  float d = march(ro, rd, max_iter);
-
-  if (d < MAX_DISTANCE)   {
-    vec3 sunDir = sunDirection();
-    vec3 osunDir = sunDir*vec3(-1.0, .0, -1.0);
-    vec3 p = ro + d*rd;
-
-    vec3 normal = normal(p.xz, d);
-
-    float amb = 0.2;
-
-    float dif1 = max(0.0, dot(sunDir, normal));
-    vec3 shd1 = sunCol2*mix(amb, 1.0, pow(dif1, 0.75));
-
-    float dif2 = max(0.0, dot(osunDir, normal));
-    vec3 shd2 = sunCol1*mix(amb, 1.0, pow(dif2, 0.75));
-
-    vec3 ref = reflect(rd, normal);
-    vec3 rcol = skyColor(p, ref);
-
-    col = mountainColor*amb*skyCol3;
-    col += mix(shd1, shd2, -0.5)*mountainColor;
-    float fre = max(dot(normal, -rd), 0.0);
-    fre = pow(1.0 - fre, 5.0);
-    col += rcol*fre*0.5;
-    col += (1.0*p.y);
-    col = tanh(col);
-    col = mix(col, skyCol, smoothstep(0.5*MAX_DISTANCE, 1.0*MAX_DISTANCE, d));
-
-  } else {
-    col = skyCol;
-  }
-
-//  col += vec3(1.1, 0.0, 0.0)* smoothstep(0.25, 1.0,(float(max_iter)/float(MAX_ITER)));
-  return col;
-}
-
-vec3 getSample1(vec2 p, float time) {
-  float off = 0.5*iTime;
-
-  vec3 ro  = vec3(0.5, 1.0-0.25, -2.0 + off);
-  vec3 la  = ro + vec3(0.0, -0.30,  2.0);
-
-  vec3 ww = normalize(la - ro);
-  vec3 uu = normalize(cross(vec3(0.0,1.0,0.0), ww));
-  vec3 vv = normalize(cross(ww, uu));
-  vec3 rd = normalize(p.x*uu + p.y*vv + 2.0*ww);
-
-  vec3 col = getColor(ro, rd)  ;
-
-  return col;
-}
-
-vec3 getSample2(vec2 p, float time) {
-  p.y-=time*0.25;
-  float h = height(p, 0.0);
-  vec3 n = normal(p, 0.0);
-
-  vec3 lp = vec3(10.0, -1.2, 0.0);
-
-  vec3 ld = normalize(vec3(p.x, h, p.y)- lp);
-
-  float d = max(dot(ld, n), 0.0);
-
-  vec3 col = vec3(0.0);
-
-  col = vec3(1.0)*(h+0.1);
-  col += vec3(1.5)*pow(d, 0.75);
-
-  return col;
-}
-
-void mainImage(out vec4 fragColor, vec2 fragCoord) {
-  vec2 q = fragCoord.xy/iResolution.xy;
-  vec2 p = -1.0 + 2.0*q;
-  p.x *= iResolution.x/iResolution.y;
-
-  vec3 col = getSample1(p, iTime);
-
-  fragColor = vec4(col, 1.0);
-}
--- a/demos/gtk-demo/application.c
+++ b/demos/gtk-demo/application.c
@@ -1,3 +1,4 @@
+
 #include "config.h"

 #include <gtk/gtk.h>
@@ -465,18 +466,18 @@ demo_application_window_size_allocate (GtkWidget *widget,
                                                                          baseline);

  if (!window->maximized && !window->fullscreen)
-    gtk_window_get_default_size (GTK_WINDOW (window), &window->width, &window->height);
+    gtk_window_get_size (GTK_WINDOW (window), &window->width, &window->height);
 }

 static void
 surface_state_changed (GtkWidget *widget)
 {
  DemoApplicationWindow *window = (DemoApplicationWindow *)widget;
-  GdkToplevelState new_state;
+  GdkSurfaceState new_state;

  new_state = gdk_toplevel_get_state (GDK_TOPLEVEL (gtk_native_get_surface (GTK_NATIVE (widget))));
-  window->maximized = (new_state & GDK_TOPLEVEL_STATE_MAXIMIZED) != 0;
-  window->fullscreen = (new_state & GDK_TOPLEVEL_STATE_FULLSCREEN) != 0;
+  window->maximized = (new_state & GDK_SURFACE_STATE_MAXIMIZED) != 0;
+  window->fullscreen = (new_state & GDK_SURFACE_STATE_FULLSCREEN) != 0;
 }

 static void
--- a/demos/gtk-demo/application.ui
+++ b/demos/gtk-demo/application.ui
@@ -31,8 +31,8 @@
              </object>
            </child>
            <layout>
-              <property name="column">0</property>
-              <property name="row">0</property>
+              <property name="left-attach">0</property>
+              <property name="top-attach">0</property>
            </layout>
          </object>
        </child>
@@ -54,8 +54,8 @@
              </object>
            </child>
            <layout>
-              <property name="column">0</property>
-              <property name="row">1</property>
+              <property name="left-attach">0</property>
+              <property name="top-attach">1</property>
            </layout>
          </object>
        </child>
@@ -70,8 +70,8 @@
              </object>
            </child>
            <layout>
-              <property name="column">0</property>
-              <property name="row">2</property>
+              <property name="left-attach">0</property>
+              <property name="top-attach">2</property>
            </layout>
          </object>
        </child>
@@ -79,8 +79,8 @@
          <object class="GtkStatusbar" id="status">
            <property name="hexpand">1</property>
            <layout>
-              <property name="column">0</property>
-              <property name="row">3</property>
+              <property name="left-attach">0</property>
+              <property name="top-attach">3</property>
            </layout>
          </object>
        </child>
--- a/demos/gtk-demo/assistant.c
+++ b/demos/gtk-demo/assistant.c
@@ -1,8 +1,8 @@
 /* Assistant
 *
- * Demonstrates a sample multi-step assistant with GtkAssistant. Assistants
- * are used to divide an operation into several simpler sequential steps,
- * and to guide the user through these steps.
+ * Demonstrates a sample multi-step assistant. Assistants are used to divide
+ * an operation into several simpler sequential steps, and to guide the user
+ * through these steps.
 */

 #include <gtk/gtk.h>
@@ -98,9 +98,6 @@ create_page1 (GtkWidget *assistant)
  gtk_box_append (GTK_BOX (box), label);

  entry = gtk_entry_new ();
-  gtk_accessible_update_relation (GTK_ACCESSIBLE (entry),
-                                  GTK_ACCESSIBLE_RELATION_LABELLED_BY, label, NULL,
-                                  -1);
  gtk_entry_set_activates_default (GTK_ENTRY (entry), TRUE);
  gtk_widget_set_valign (entry, GTK_ALIGN_CENTER);
  gtk_box_append (GTK_BOX (box), entry);
--- a/demos/gtk-demo/background.glsl
+++ b/demos/gtk-demo/background.glsl
@@ -1,26 +0,0 @@
-uniform float u_time;
-
-void
-mainImage(out vec4 fragColor, in vec2 fragCoord, in vec2 resolution, in vec2 uv)
-{
-  vec2 pos = (fragCoord.xy * 2.0 - resolution.xy)/ min (resolution.x, resolution.y) ;
-
-  float t0 = sin ((u_time + 0.00)*1.0);
-  float t1 = sin ((u_time + 0.30)*0.4);
-  float t2 = cos ((u_time + 0.23)*0.9);
-  float t3 = cos ((u_time + 0.41)*0.6);
-  float t4 = cos ((u_time + 0.11)*0.3);
-
-  vec2 p0 = vec2 (t1, t0) ;
-  vec2 p1 = vec2 (t2, t3) ;
-  vec2 p2 = vec2 (t4, t3) ;
-
-  float r = 1.0/distance (pos, p0);
-  float g = 1.0/distance (pos, p1);
-  float b = 1.0/distance (pos, p2);
-  float sum = r + g + b;
-
-  float alpha = 1.0 - pow (1.0/(sum), 40.0)*pow (10.0, 40.0*0.7);
-
-  fragColor = vec4 (r*0.5, g*0.5, b*0.5, 1.0) * alpha;
-}
--- a/demos/gtk-demo/bbb.png
+++ b/demos/gtk-demo/bbb.png
--- a/demos/gtk-demo/blendmodes.ui
+++ b/demos/gtk-demo/blendmodes.ui
@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <interface>
+  <requires lib="gtk+" version="3.20"/>
  <object class="GtkWindow" id="window">
    <property name="resizable">0</property>
    <property name="title">CSS Blend Modes</property>
@@ -7,10 +8,6 @@
    <property name="default-height">300</property>
    <child>
      <object class="GtkGrid">
-        <property name="margin-start">12</property>
-        <property name="margin-end">12</property>
-        <property name="margin-top">12</property>
-        <property name="margin-bottom">12</property>
        <property name="row-spacing">12</property>
        <property name="column-spacing">12</property>
        <child>
@@ -21,8 +18,8 @@
              <class name="dim-label"/>
            </style>
            <layout>
-              <property name="column">0</property>
-              <property name="row">0</property>
+              <property name="left-attach">0</property>
+              <property name="top-attach">0</property>
            </layout>
          </object>
        </child>
@@ -32,8 +29,8 @@
            <property name="has-frame">1</property>
            <property name="min-content-width">150</property>
            <layout>
-              <property name="column">0</property>
-              <property name="row">1</property>
+              <property name="left-attach">0</property>
+              <property name="top-attach">1</property>
            </layout>
          </object>
        </child>
@@ -43,8 +40,8 @@
            <property name="hexpand">1</property>
            <property name="stack">stack</property>
            <layout>
-              <property name="column">1</property>
-              <property name="row">0</property>
+              <property name="left-attach">1</property>
+              <property name="top-attach">0</property>
            </layout>
          </object>
        </child>
@@ -70,8 +67,8 @@
                      <object class="GtkLabel">
                        <property name="label" translatable="yes">Duck</property>
                        <layout>
-                          <property name="column">0</property>
-                          <property name="row">0</property>
+                          <property name="left-attach">0</property>
+                          <property name="top-attach">0</property>
                        </layout>
                      </object>
                    </child>
@@ -79,8 +76,8 @@
                      <object class="GtkLabel">
                        <property name="label" translatable="yes">Background</property>
                        <layout>
-                          <property name="column">1</property>
-                          <property name="row">0</property>
+                          <property name="left-attach">1</property>
+                          <property name="top-attach">0</property>
                        </layout>
                      </object>
                    </child>
@@ -90,8 +87,8 @@
                          <class name="duck"/>
                        </style>
                        <layout>
-                          <property name="column">0</property>
-                          <property name="row">1</property>
+                          <property name="left-attach">0</property>
+                          <property name="top-attach">1</property>
                        </layout>
                      </object>
                    </child>
@@ -101,8 +98,8 @@
                          <class name="gradient"/>
                        </style>
                        <layout>
-                          <property name="column">1</property>
-                          <property name="row">1</property>
+                          <property name="left-attach">1</property>
+                          <property name="top-attach">1</property>
                        </layout>
                      </object>
                    </child>
@@ -111,8 +108,8 @@
                        <property name="label" translatable="yes">
 Blended picture</property>
                        <layout>
-                          <property name="column">0</property>
-                          <property name="row">2</property>
+                          <property name="left-attach">0</property>
+                          <property name="top-attach">2</property>
                          <property name="column-span">2</property>
                        </layout>
                      </object>
@@ -124,8 +121,8 @@ Blended picture</property>
                          <class name="blend0"/>
                        </style>
                        <layout>
-                          <property name="column">0</property>
-                          <property name="row">3</property>
+                          <property name="left-attach">0</property>
+                          <property name="top-attach">3</property>
                          <property name="column-span">2</property>
                        </layout>
                      </object>
@@ -149,8 +146,8 @@ Blended picture</property>
                      <object class="GtkLabel">
                        <property name="label" translatable="yes">Red</property>
                        <layout>
-                          <property name="column">0</property>
-                          <property name="row">0</property>
+                          <property name="left-attach">0</property>
+                          <property name="top-attach">0</property>
                        </layout>
                      </object>
                    </child>
@@ -158,8 +155,8 @@ Blended picture</property>
                      <object class="GtkLabel">
                        <property name="label" translatable="yes">Blue</property>
                        <layout>
-                          <property name="column">1</property>
-                          <property name="row">0</property>
+                          <property name="left-attach">1</property>
+                          <property name="top-attach">0</property>
                        </layout>
                      </object>
                    </child>
@@ -169,8 +166,8 @@ Blended picture</property>
                          <class name="red"/>
                        </style>
                        <layout>
-                          <property name="column">0</property>
-                          <property name="row">1</property>
+                          <property name="left-attach">0</property>
+                          <property name="top-attach">1</property>
                        </layout>
                      </object>
                    </child>
@@ -180,8 +177,8 @@ Blended picture</property>
                          <class name="blue"/>
                        </style>
                        <layout>
-                          <property name="column">1</property>
-                          <property name="row">1</property>
+                          <property name="left-attach">1</property>
+                          <property name="top-attach">1</property>
                        </layout>
                      </object>
                    </child>
@@ -190,8 +187,8 @@ Blended picture</property>
                        <property name="label" translatable="yes">
 Blended picture</property>
                        <layout>
-                          <property name="column">0</property>
-                          <property name="row">2</property>
+                          <property name="left-attach">0</property>
+                          <property name="top-attach">2</property>
                          <property name="column-span">2</property>
                        </layout>
                      </object>
@@ -203,8 +200,8 @@ Blended picture</property>
                          <class name="blend1"/>
                        </style>
                        <layout>
-                          <property name="column">0</property>
-                          <property name="row">3</property>
+                          <property name="left-attach">0</property>
+                          <property name="top-attach">3</property>
                          <property name="column-span">2</property>
                        </layout>
                      </object>
@@ -231,8 +228,8 @@ Blended picture</property>
                          <class name="cyan"/>
                        </style>
                        <layout>
-                          <property name="column">0</property>
-                          <property name="row">1</property>
+                          <property name="left-attach">0</property>
+                          <property name="top-attach">1</property>
                        </layout>
                      </object>
                    </child>
@@ -242,8 +239,8 @@ Blended picture</property>
                          <class name="magenta"/>
                        </style>
                        <layout>
-                          <property name="column">1</property>
-                          <property name="row">1</property>
+                          <property name="left-attach">1</property>
+                          <property name="top-attach">1</property>
                        </layout>
                      </object>
                    </child>
@@ -253,8 +250,8 @@ Blended picture</property>
                          <class name="yellow"/>
                        </style>
                        <layout>
-                          <property name="column">0</property>
-                          <property name="row">3</property>
+                          <property name="left-attach">0</property>
+                          <property name="top-attach">3</property>
                        </layout>
                      </object>
                    </child>
@@ -265,8 +262,8 @@ Blended picture</property>
                          <class name="blend2"/>
                        </style>
                        <layout>
-                          <property name="column">1</property>
-                          <property name="row">3</property>
+                          <property name="left-attach">1</property>
+                          <property name="top-attach">3</property>
                        </layout>
                      </object>
                    </child>
@@ -278,8 +275,8 @@ Blended picture</property>
                          <class name="dim-label"/>
                        </style>
                        <layout>
-                          <property name="column">0</property>
-                          <property name="row">0</property>
+                          <property name="left-attach">0</property>
+                          <property name="top-attach">0</property>
                        </layout>
                      </object>
                    </child>
@@ -291,8 +288,8 @@ Blended picture</property>
                          <class name="dim-label"/>
                        </style>
                        <layout>
-                          <property name="column">1</property>
-                          <property name="row">0</property>
+                          <property name="left-attach">1</property>
+                          <property name="top-attach">0</property>
                        </layout>
                      </object>
                    </child>
@@ -304,8 +301,8 @@ Blended picture</property>
                          <class name="dim-label"/>
                        </style>
                        <layout>
-                          <property name="column">0</property>
-                          <property name="row">2</property>
+                          <property name="left-attach">0</property>
+                          <property name="top-attach">2</property>
                        </layout>
                      </object>
                    </child>
@@ -317,8 +314,8 @@ Blended picture</property>
                          <attribute name="weight" value="bold"></attribute>
                        </attributes>
                        <layout>
-                          <property name="column">1</property>
-                          <property name="row">2</property>
+                          <property name="left-attach">1</property>
+                          <property name="top-attach">2</property>
                        </layout>
                      </object>
                    </child>
@@ -327,8 +324,8 @@ Blended picture</property>
              </object>
            </child>
            <layout>
-              <property name="column">1</property>
-              <property name="row">1</property>
+              <property name="left-attach">1</property>
+              <property name="top-attach">1</property>
            </layout>
          </object>
        </child>
--- a/demos/gtk-demo/bluroverlay.c
+++ b/demos/gtk-demo/bluroverlay.c
@@ -132,10 +132,10 @@ blur_overlay_child_update_style_classes (BlurOverlay *overlay,
  gboolean is_left, is_right, is_top, is_bottom;
  gboolean has_left, has_right, has_top, has_bottom;

-  has_left = gtk_widget_has_css_class (child, "left");
-  has_right = gtk_widget_has_css_class (child, "right");
-  has_top = gtk_widget_has_css_class (child, "top");
-  has_bottom = gtk_widget_has_css_class (child, "bottom");
+  has_left = gtk_widget_has_css_class (child, GTK_STYLE_CLASS_LEFT);
+  has_right = gtk_widget_has_css_class (child, GTK_STYLE_CLASS_RIGHT);
+  has_top = gtk_widget_has_css_class (child, GTK_STYLE_CLASS_TOP);
+  has_bottom = gtk_widget_has_css_class (child, GTK_STYLE_CLASS_BOTTOM);

  is_left = is_right = is_top = is_bottom = FALSE;

@@ -158,24 +158,24 @@ blur_overlay_child_update_style_classes (BlurOverlay *overlay,
    is_bottom = (child_allocation->y + child_allocation->height == height);

  if (has_left && !is_left)
-    gtk_widget_remove_css_class (child, "left");
+    gtk_widget_remove_css_class (child, GTK_STYLE_CLASS_LEFT);
  else if (!has_left && is_left)
-    gtk_widget_add_css_class (child, "left");
+    gtk_widget_add_css_class (child, GTK_STYLE_CLASS_LEFT);

  if (has_right && !is_right)
-    gtk_widget_remove_css_class (child, "right");
+    gtk_widget_remove_css_class (child, GTK_STYLE_CLASS_RIGHT);
  else if (!has_right && is_right)
-    gtk_widget_add_css_class (child, "right");
+    gtk_widget_add_css_class (child, GTK_STYLE_CLASS_RIGHT);

  if (has_top && !is_top)
-    gtk_widget_remove_css_class (child, "top");
+    gtk_widget_remove_css_class (child, GTK_STYLE_CLASS_TOP);
  else if (!has_top && is_top)
-    gtk_widget_add_css_class (child, "top");
+    gtk_widget_add_css_class (child, GTK_STYLE_CLASS_TOP);

  if (has_bottom && !is_bottom)
-    gtk_widget_remove_css_class (child, "bottom");
+    gtk_widget_remove_css_class (child, GTK_STYLE_CLASS_BOTTOM);
  else if (!has_bottom && is_bottom)
-    gtk_widget_add_css_class (child, "bottom");
+    gtk_widget_add_css_class (child, GTK_STYLE_CLASS_BOTTOM);
 }

 static void
--- a/demos/gtk-demo/builder.c
+++ b/demos/gtk-demo/builder.c
@@ -1,8 +1,6 @@
 /* Builder
- * #Keywords: GMenu, GtkPopoverMenuBar, GtkBuilder, GtkStatusBar, GtkShortcutController, toolbar
 *
- * Demonstrates a traditional interface, loaded from a XML description,
- * and shows how to connect actions to the menu items and toolbar buttons.
+ * Demonstrates an interface loaded from a XML description.
 */

 #include <gtk/gtk.h>
@@ -23,38 +21,15 @@ about_activate (GSimpleAction *action,
                gpointer       user_data)
 {
  GtkWidget *window = user_data;
+  GtkBuilder *builder;
  GtkWidget *about_dlg;

-  about_dlg = GTK_WIDGET (g_object_get_data (G_OBJECT (window), "about"));
-  gtk_window_present (GTK_WINDOW (about_dlg));
-}
-
-static void
-remove_timeout (gpointer data)
-{
-  guint id = GPOINTER_TO_UINT (data);
-
-  g_source_remove (id);
-}
-
-static gboolean
-pop_status (gpointer data)
-{
-  gtk_statusbar_pop (GTK_STATUSBAR (data), 0);
-  g_object_set_data (G_OBJECT (data), "timeout", NULL);
-  return G_SOURCE_REMOVE;
-}
-
-static void
-status_message (GtkStatusbar *status,
-                const char   *text)
-{
-  guint id;
-
-  gtk_statusbar_push (GTK_STATUSBAR (status), 0, text);
-  id = g_timeout_add (5000, pop_status, status);
-
-  g_object_set_data_full (G_OBJECT (status), "timeout", GUINT_TO_POINTER (id), remove_timeout);
+  builder = g_object_get_data (G_OBJECT (window), "builder");
+  about_dlg = GTK_WIDGET (gtk_builder_get_object (builder, "aboutdialog1"));
+  gtk_window_set_transient_for (GTK_WINDOW (about_dlg), GTK_WINDOW (window));
+  gtk_window_set_hide_on_close (GTK_WINDOW (about_dlg), TRUE);
+  g_signal_connect (about_dlg, "response", G_CALLBACK (gtk_widget_hide), NULL);
+  gtk_widget_show (about_dlg);
 }

 static void
@@ -62,10 +37,7 @@ help_activate (GSimpleAction *action,
               GVariant      *parameter,
               gpointer       user_data)
 {
-  GtkWidget *status;
-
-  status = GTK_WIDGET (g_object_get_data (G_OBJECT (user_data), "status"));
-  status_message (GTK_STATUSBAR (status), "Help not available");
+  g_print ("Help not available\n");
 }

 static void
@@ -73,13 +45,7 @@ not_implemented (GSimpleAction *action,
                 GVariant      *parameter,
                 gpointer       user_data)
 {
-  GtkWidget *status;
-  char *text;
-
-  text = g_strdup_printf ("Action “%s” not implemented", g_action_get_name (G_ACTION (action)));
-  status = GTK_WIDGET (g_object_get_data (G_OBJECT (user_data), "status"));
-  status_message (GTK_STATUSBAR (status), text);
-  g_free (text);
+  g_print ("Action “%s” not implemented\n", g_action_get_name (G_ACTION (action)));
 }

 static GActionEntry win_entries[] = {
@@ -104,9 +70,6 @@ do_builder (GtkWidget *do_widget)
  if (!window)
    {
      GtkBuilder *builder;
-      GtkWidget *about;
-      GtkWidget *status;
-      GtkEventController *controller;

      builder = gtk_builder_new_from_resource ("/builder/demo.ui");

@@ -120,50 +83,6 @@ do_builder (GtkWidget *do_widget)
                                       window);
      gtk_widget_insert_action_group (window, "win", actions);

-      controller = gtk_shortcut_controller_new ();
-      gtk_shortcut_controller_set_scope (GTK_SHORTCUT_CONTROLLER (controller),
-                                         GTK_SHORTCUT_SCOPE_GLOBAL);
-      gtk_widget_add_controller (window, controller);
-      gtk_shortcut_controller_add_shortcut (GTK_SHORTCUT_CONTROLLER (controller),
-           gtk_shortcut_new (gtk_keyval_trigger_new (GDK_KEY_n, GDK_CONTROL_MASK),
-                             gtk_named_action_new ("win.new")));
-      gtk_shortcut_controller_add_shortcut (GTK_SHORTCUT_CONTROLLER (controller),
-           gtk_shortcut_new (gtk_keyval_trigger_new (GDK_KEY_o, GDK_CONTROL_MASK),
-                             gtk_named_action_new ("win.open")));
-      gtk_shortcut_controller_add_shortcut (GTK_SHORTCUT_CONTROLLER (controller),
-           gtk_shortcut_new (gtk_keyval_trigger_new (GDK_KEY_s, GDK_CONTROL_MASK),
-                             gtk_named_action_new ("win.save")));
-      gtk_shortcut_controller_add_shortcut (GTK_SHORTCUT_CONTROLLER (controller),
-           gtk_shortcut_new (gtk_keyval_trigger_new (GDK_KEY_s, GDK_CONTROL_MASK|GDK_SHIFT_MASK),
-                             gtk_named_action_new ("win.save-as")));
-      gtk_shortcut_controller_add_shortcut (GTK_SHORTCUT_CONTROLLER (controller),
-           gtk_shortcut_new (gtk_keyval_trigger_new (GDK_KEY_q, GDK_CONTROL_MASK),
-                             gtk_named_action_new ("win.quit")));
-      gtk_shortcut_controller_add_shortcut (GTK_SHORTCUT_CONTROLLER (controller),
-           gtk_shortcut_new (gtk_keyval_trigger_new (GDK_KEY_c, GDK_CONTROL_MASK),
-                             gtk_named_action_new ("win.copy")));
-      gtk_shortcut_controller_add_shortcut (GTK_SHORTCUT_CONTROLLER (controller),
-           gtk_shortcut_new (gtk_keyval_trigger_new (GDK_KEY_x, GDK_CONTROL_MASK),
-                             gtk_named_action_new ("win.cut")));
-      gtk_shortcut_controller_add_shortcut (GTK_SHORTCUT_CONTROLLER (controller),
-           gtk_shortcut_new (gtk_keyval_trigger_new (GDK_KEY_v, GDK_CONTROL_MASK),
-                             gtk_named_action_new ("win.paste")));
-      gtk_shortcut_controller_add_shortcut (GTK_SHORTCUT_CONTROLLER (controller),
-           gtk_shortcut_new (gtk_keyval_trigger_new (GDK_KEY_F1, 0),
-                             gtk_named_action_new ("win.help")));
-      gtk_shortcut_controller_add_shortcut (GTK_SHORTCUT_CONTROLLER (controller),
-           gtk_shortcut_new (gtk_keyval_trigger_new (GDK_KEY_F7, 0),
-                             gtk_named_action_new ("win.about")));
-
-      about = GTK_WIDGET (gtk_builder_get_object (builder, "aboutdialog1"));
-      gtk_window_set_transient_for (GTK_WINDOW (about), GTK_WINDOW (window));
-      gtk_window_set_hide_on_close (GTK_WINDOW (about), TRUE);
-      g_object_set_data_full (G_OBJECT (window), "about",
-                              about, (GDestroyNotify)gtk_window_destroy);
-
-      status = GTK_WIDGET (gtk_builder_get_object (builder, "statusbar1"));
-      g_object_set_data (G_OBJECT (window), "status", status);
-
      g_object_unref (builder);
    }

--- a/demos/gtk-demo/clipboard.c
+++ b/demos/gtk-demo/clipboard.c
@@ -1,10 +1,12 @@
 /* Clipboard
 *
 * GdkClipboard is used for clipboard handling. This demo shows how to
- * copy and paste text, images, colors or files to and from the clipboard.
+ * copy and paste text to and from the clipboard.
 *
- * You can also use Drag-And-Drop to copy the data from the source to the
- * target.
+ * It also shows how to transfer images via the clipboard or via
+ * drag-and-drop, and how to make clipboard contents persist after
+ * the application exits. Clipboard persistence requires a clipboard
+ * manager to run.
 */

 #include <glib/gi18n.h>
@@ -12,103 +14,22 @@
 #include <string.h>
 #include "demoimage.h"

+static GtkWidget *window = NULL;
+
 static void
-copy_button_clicked (GtkStack *source_stack,
-                     gpointer  user_data)
+copy_button_clicked (GtkWidget *button,
+                     gpointer   user_data)
 {
+  GtkWidget *entry;
  GdkClipboard *clipboard;
-  const char *visible_child_name;
-  GtkWidget *visible_child;

-  clipboard = gtk_widget_get_clipboard (GTK_WIDGET (source_stack));
+  entry = GTK_WIDGET (user_data);

-  visible_child = gtk_stack_get_visible_child (source_stack);
-  visible_child_name = gtk_stack_get_visible_child_name (source_stack);
+  /* Get the clipboard object */
+  clipboard = gtk_widget_get_clipboard (entry);

-  if (strcmp (visible_child_name, "Text") == 0)
-    {
-      gdk_clipboard_set_text (clipboard, gtk_editable_get_text (GTK_EDITABLE (visible_child)));
-    }
-  else if (strcmp (visible_child_name, "Image") == 0)
-    {
-      GtkWidget *child;
-
-      for (child = gtk_widget_get_first_child (visible_child); child; child = gtk_widget_get_next_sibling (child))
-        {
-          if (gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (child)))
-            {
-              GtkWidget *image = gtk_widget_get_first_child (child);
-              GdkPaintable *paintable = gtk_image_get_paintable (GTK_IMAGE (image));
-
-              if (GDK_IS_TEXTURE (paintable))
-                gdk_clipboard_set (clipboard, GDK_TYPE_TEXTURE, paintable);
-              else
-                gdk_clipboard_set (clipboard, GDK_TYPE_PAINTABLE, paintable);
-              break;
-            }
-        }
-    }
-  else if (strcmp (visible_child_name, "Color") == 0)
-    {
-      GdkRGBA color;
-
-      gtk_color_chooser_get_rgba (GTK_COLOR_CHOOSER (visible_child), &color);
-      gdk_clipboard_set (clipboard, GDK_TYPE_RGBA, &color);
-    }
-  else if (strcmp (visible_child_name, "File") == 0)
-    {
-      gdk_clipboard_set (clipboard, G_TYPE_FILE, g_object_get_data (G_OBJECT (visible_child), "file"), NULL);
-    }
-  else
-    {
-      g_print ("TODO");
-    }
-}
-
-static void
-present_value (GtkStack     *dest_stack,
-               const GValue *value)
-{
-  GtkWidget *child;
-
-  if (G_VALUE_HOLDS (value, G_TYPE_FILE))
-    {
-      GFile *file;
-
-      gtk_stack_set_visible_child_name (dest_stack, "File");
-      child = gtk_stack_get_visible_child (dest_stack);
-
-      file = g_value_get_object (value);
-      g_object_set (child, "label", g_file_peek_path (file), NULL);
-    }
-  else if (G_VALUE_HOLDS (value, GDK_TYPE_RGBA))
-    {
-      GdkRGBA *color;
-
-      gtk_stack_set_visible_child_name (dest_stack, "Color");
-      child = gtk_widget_get_first_child (gtk_stack_get_visible_child (dest_stack));
-
-      color = g_value_get_boxed (value);
-      g_object_set (child, "rgba", color, NULL);
-    }
-  else if (G_VALUE_HOLDS (value, GDK_TYPE_TEXTURE) ||
-           G_VALUE_HOLDS (value, GDK_TYPE_PAINTABLE))
-    {
-      GdkPaintable *paintable;
-
-      gtk_stack_set_visible_child_name (dest_stack, "Image");
-      child = gtk_stack_get_visible_child (dest_stack);
-
-      paintable = g_value_get_object (value);
-      g_object_set (child, "paintable", paintable, NULL);
-    }
-  else if (G_VALUE_HOLDS (value, G_TYPE_STRING))
-    {
-      gtk_stack_set_visible_child_name (dest_stack, "Text");
-      child = gtk_stack_get_visible_child (dest_stack);
-
-      gtk_label_set_label (GTK_LABEL (child), g_value_get_string (value));
-    }
+  /* Set clipboard text */
+  gdk_clipboard_set_text (clipboard, gtk_editable_get_text (GTK_EDITABLE (entry)));
 }

 static void
@@ -116,259 +37,149 @@ paste_received (GObject      *source_object,
                GAsyncResult *result,
                gpointer      user_data)
 {
-  GtkStack *dest_stack = user_data;
  GdkClipboard *clipboard;
-  const GValue *value;
+  GtkWidget *entry;
+  char *text;
  GError *error = NULL;

  clipboard = GDK_CLIPBOARD (source_object);
+  entry = GTK_WIDGET (user_data);

-  value = gdk_clipboard_read_value_finish (clipboard, result, &error);
-  if (value)
+  /* Get the resulting text of the read operation */
+  text = gdk_clipboard_read_text_finish (clipboard, result, &error);
+
+  if (text)
    {
-      present_value (dest_stack, value);
+      /* Set the entry text */
+      gtk_editable_set_text (GTK_EDITABLE (entry), text);
+      g_free (text);
    }
  else
    {
-      g_print ("%s\n", error->message);
+      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_window_destroy), NULL);
+      gtk_widget_show (dialog);
+
      g_error_free (error);
    }
 }

 static void
-paste_button_clicked (GtkStack *dest_stack,
-                      gpointer  user_data)
+paste_button_clicked (GtkWidget *button,
+                      gpointer   user_data)
 {
+  GtkWidget *entry;
  GdkClipboard *clipboard;
-  GdkContentFormats *formats;

-  clipboard = gtk_widget_get_clipboard (GTK_WIDGET (dest_stack));
-  formats = gdk_clipboard_get_formats (clipboard);
+  entry = GTK_WIDGET (user_data);

-  if (gdk_content_formats_contain_gtype (formats, GDK_TYPE_TEXTURE))
-    gdk_clipboard_read_value_async (clipboard, GDK_TYPE_TEXTURE, 0, NULL, paste_received, dest_stack);
-  else if (gdk_content_formats_contain_gtype (formats, GDK_TYPE_PAINTABLE))
-    gdk_clipboard_read_value_async (clipboard, GDK_TYPE_PAINTABLE, 0, NULL, paste_received, dest_stack);
-  else if (gdk_content_formats_contain_gtype (formats, GDK_TYPE_RGBA))
-    gdk_clipboard_read_value_async (clipboard, GDK_TYPE_RGBA, 0, NULL, paste_received, dest_stack);
-  else if (gdk_content_formats_contain_gtype (formats, G_TYPE_FILE))
-    gdk_clipboard_read_value_async (clipboard, G_TYPE_FILE, 0, NULL, paste_received, dest_stack);
-  else if (gdk_content_formats_contain_gtype (formats, G_TYPE_STRING))
-    gdk_clipboard_read_value_async (clipboard, G_TYPE_STRING, 0, NULL, paste_received, dest_stack);
-}
+  /* Get the clipboard object */
+  clipboard = gtk_widget_get_clipboard (entry);

-static void
-update_copy_button_sensitivity (GtkWidget *source_stack)
-{
-  GtkButton *copy_button;
-  const char *visible_child_name;
-  GtkWidget *visible_child;
-  gboolean sensitive;
-
-  copy_button = GTK_BUTTON (g_object_get_data (G_OBJECT (source_stack), "copy-button"));
-
-  visible_child = gtk_stack_get_visible_child (GTK_STACK (source_stack));
-  visible_child_name = gtk_stack_get_visible_child_name (GTK_STACK (source_stack));
-  if (strcmp (visible_child_name, "Text") == 0)
-    {
-      sensitive = strlen (gtk_editable_get_text (GTK_EDITABLE (visible_child))) > 0;
-    }
-  else if (strcmp (visible_child_name, "Color") == 0 ||
-           strcmp (visible_child_name, "Image") == 0)
-    {
-      sensitive = TRUE;
-    }
-  else if (strcmp (visible_child_name, "File") == 0)
-    {
-      sensitive = g_object_get_data (G_OBJECT (visible_child), "file") != NULL;
-    }
-  else
-    {
-      sensitive = FALSE;
-    }
-
-  gtk_widget_set_sensitive (GTK_WIDGET (copy_button), sensitive);
-}
-
-static void
-source_changed_cb (GtkButton  *copy_button,
-                   GParamSpec *pspec,
-                   GtkWidget  *source_stack)
-{
-  update_copy_button_sensitivity (source_stack);
-}
-
-static void
-text_changed_cb (GtkButton  *copy_button,
-                 GParamSpec *pspec,
-                 GtkWidget  *entry)
-{
-  update_copy_button_sensitivity (gtk_widget_get_ancestor (entry, GTK_TYPE_STACK));
-}
-
-static void
-file_button_set_file (GtkButton *button,
-                      GFile     *file)
-{
-  gtk_label_set_label (GTK_LABEL (gtk_button_get_child (button)), g_file_peek_path (file));
-  g_object_set_data_full (G_OBJECT (button), "file", g_object_ref (file), g_object_unref);
-}
-
-static void
-file_chooser_response (GtkNativeDialog *dialog,
-                       int              response,
-                       GtkButton       *button)
-{
-  gtk_native_dialog_hide (dialog);
-
-  if (response == GTK_RESPONSE_ACCEPT)
-    {
-      GFile *file = gtk_file_chooser_get_file (GTK_FILE_CHOOSER (dialog));
-      file_button_set_file (button, file);
-      g_object_unref (file);
-
-      update_copy_button_sensitivity (gtk_widget_get_ancestor (GTK_WIDGET (button), GTK_TYPE_STACK));
-    }
-
-  gtk_native_dialog_destroy (dialog);
-}
-
-static void
-open_file_cb (GtkWidget *button)
-{
-  GtkFileChooserNative *chooser;
-
-  chooser = gtk_file_chooser_native_new ("Choose a file",
-                                         GTK_WINDOW (gtk_widget_get_ancestor (button, GTK_TYPE_WINDOW)),
-                                         GTK_FILE_CHOOSER_ACTION_OPEN,
-                                         "_Open",
-                                         "_Cancel");
-
-  g_signal_connect (chooser, "response", G_CALLBACK (file_chooser_response), button);
-  gtk_native_dialog_show (GTK_NATIVE_DIALOG (chooser));
-}
-
-static void
-update_paste_button_sensitivity (GdkClipboard *clipboard,
-                                 GtkWidget    *paste_button)
-{
-  GdkContentFormats *formats;
-  gboolean sensitive = FALSE;
-
-  formats = gdk_clipboard_get_formats (clipboard);
-
-  if (gdk_content_formats_contain_gtype (formats, G_TYPE_FILE) ||
-      gdk_content_formats_contain_gtype (formats, GDK_TYPE_RGBA) ||
-      gdk_content_formats_contain_gtype (formats, GDK_TYPE_TEXTURE) ||
-      gdk_content_formats_contain_gtype (formats, GDK_TYPE_PAINTABLE) ||
-      gdk_content_formats_contain_gtype (formats, G_TYPE_STRING))
-    sensitive = TRUE;
-
-  gtk_widget_set_sensitive (paste_button, sensitive);
-}
-
-static void
-unset_clipboard_handler (gpointer data)
-{
-  GdkClipboard *clipboard = gtk_widget_get_clipboard (GTK_WIDGET (data));
-
-  g_signal_handlers_disconnect_by_func (clipboard, update_paste_button_sensitivity, data);
-}
-
-static gboolean
-on_drop (GtkStack      *dest_stack,
-         const GValue  *value,
-         double         x,
-         double         y,
-         gpointer       data)
-{
-  present_value (dest_stack, value);
-  return TRUE;
-}
-
-static GdkContentProvider *
-drag_prepare (GtkDragSource *drag_source,
-              double         x,
-              double         y,
-              gpointer       data)
-{
-  GtkWidget *button;
-  GValue value = G_VALUE_INIT;
-
-  button = gtk_event_controller_get_widget (GTK_EVENT_CONTROLLER (drag_source));
-
-  if (GTK_IS_TOGGLE_BUTTON (button))
-    {
-      GtkWidget *image = gtk_widget_get_first_child (button);
-      GdkPaintable *paintable = gtk_image_get_paintable (GTK_IMAGE (image));
-
-      if (GDK_IS_TEXTURE (paintable))
-        {
-          g_value_init (&value, GDK_TYPE_TEXTURE);
-          g_value_set_object (&value, paintable);
-        }
-      else
-        {
-          g_value_init (&value, GDK_TYPE_PAINTABLE);
-          g_value_set_object (&value, paintable);
-        }
-    }
-  else
-    {
-      GFile *file = g_object_get_data (G_OBJECT (button), "file");
-
-      if (file)
-        {
-          g_value_init (&value, G_TYPE_FILE);
-          g_value_set_object (&value, file);
-        }
-      else
-        return NULL;
-    }
-
-  return gdk_content_provider_new_for_value (&value);
+  /* Request the contents of the clipboard, contents_received will be
+     called when we do get the contents.
+   */
+  gdk_clipboard_read_text_async (clipboard, NULL, paste_received, entry);
 }

 GtkWidget *
 do_clipboard (GtkWidget *do_widget)
 {
-  static GtkWidget *window = NULL;
-
  if (!window)
    {
-      GtkBuilderScope *scope;
-      GtkBuilder *builder;
-      GtkWidget *button;
+      GtkWidget *vbox, *hbox;
+      GtkWidget *label;
+      GtkWidget *entry, *button;
+      GtkWidget *image;

-      scope = gtk_builder_cscope_new ();
-      gtk_builder_cscope_add_callback_symbols (GTK_BUILDER_CSCOPE (scope),
-                                               "copy_button_clicked", G_CALLBACK (copy_button_clicked),
-                                               "paste_button_clicked", G_CALLBACK (paste_button_clicked),
-                                               "source_changed_cb", G_CALLBACK (source_changed_cb),
-                                               "text_changed_cb", G_CALLBACK (text_changed_cb),
-                                               "open_file_cb", G_CALLBACK (open_file_cb),
-                                               "on_drop", G_CALLBACK (on_drop),
-                                               "drag_prepare", G_CALLBACK (drag_prepare),
-                                               NULL);
-
-      builder = gtk_builder_new ();
-      gtk_builder_set_scope (builder, scope);
-      gtk_builder_add_from_resource (builder, "/clipboard/clipboard.ui", NULL);
-
-      window = GTK_WIDGET (gtk_builder_get_object (builder, "window"));
+      window = gtk_window_new ();
+      gtk_window_set_display (GTK_WINDOW (window),
+                              gtk_widget_get_display (do_widget));
+      gtk_window_set_title (GTK_WINDOW (window), "Clipboard");
      g_object_add_weak_pointer (G_OBJECT (window), (gpointer *)&window);
-      gtk_window_set_display (GTK_WINDOW (window), gtk_widget_get_display (do_widget));

-      button = GTK_WIDGET (gtk_builder_get_object (builder, "copy_button"));
-      g_object_set_data (gtk_builder_get_object (builder, "source_stack"), "copy-button", button);
+      vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 0);
+      gtk_widget_set_margin_start (vbox, 8);
+      gtk_widget_set_margin_end (vbox, 8);
+      gtk_widget_set_margin_top (vbox, 8);
+      gtk_widget_set_margin_bottom (vbox, 8);

-      button = GTK_WIDGET (gtk_builder_get_object (builder, "paste_button"));
-      g_signal_connect (gtk_widget_get_clipboard (button), "changed",
-                        G_CALLBACK (update_paste_button_sensitivity), button);
-      g_object_set_data_full (G_OBJECT (button), "clipboard-handler", button, unset_clipboard_handler);
+      gtk_window_set_child (GTK_WINDOW (window), vbox);

-      g_object_unref (builder);
-      g_object_unref (scope);
+      label = gtk_label_new ("\"Copy\" will copy the text\nin the entry to the clipboard");
+
+      gtk_box_append (GTK_BOX (vbox), label);
+
+      hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 4);
+      gtk_widget_set_margin_start (hbox, 8);
+      gtk_widget_set_margin_end (hbox, 8);
+      gtk_widget_set_margin_top (hbox, 8);
+      gtk_widget_set_margin_bottom (hbox, 8);
+      gtk_box_append (GTK_BOX (vbox), hbox);
+
+      /* Create the first entry */
+      entry = gtk_entry_new ();
+      gtk_box_append (GTK_BOX (hbox), entry);
+
+      /* Create the button */
+      button = gtk_button_new_with_mnemonic (_("_Copy"));
+      gtk_box_append (GTK_BOX (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_append (GTK_BOX (vbox), label);
+
+      hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 4);
+      gtk_widget_set_margin_start (hbox, 8);
+      gtk_widget_set_margin_end (hbox, 8);
+      gtk_widget_set_margin_top (hbox, 8);
+      gtk_widget_set_margin_bottom (hbox, 8);
+      gtk_box_append (GTK_BOX (vbox), hbox);
+
+      /* Create the second entry */
+      entry = gtk_entry_new ();
+      gtk_box_append (GTK_BOX (hbox), entry);
+
+      /* Create the button */
+      button = gtk_button_new_with_mnemonic (_("_Paste"));
+      gtk_box_append (GTK_BOX (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_append (GTK_BOX (vbox), label);
+
+      hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 4);
+      gtk_widget_set_margin_start (hbox, 8);
+      gtk_widget_set_margin_end (hbox, 8);
+      gtk_widget_set_margin_top (hbox, 8);
+      gtk_widget_set_margin_bottom (hbox, 8);
+      gtk_box_append (GTK_BOX (vbox), hbox);
+
+      /* Create the first image */
+      image = demo_image_new ("dialog-warning");
+      gtk_box_append (GTK_BOX (hbox), image);
+
+      /* Create the second image */
+      image = demo_image_new ("process-stop");
+      gtk_box_append (GTK_BOX (hbox), image);
+
+      /* Create the third image */
+      image = demo_image_new ("weather-clear");
+      gtk_box_append (GTK_BOX (hbox), image);
    }

  if (!gtk_widget_get_visible (window))
--- a/demos/gtk-demo/clipboard.ui
+++ b/demos/gtk-demo/clipboard.ui
@@ -1,288 +0,0 @@
-
-<?xml version="1.0" encoding="UTF-8"?>
-<interface>
-  <object class="GtkWindow" id="window">
-    <property name="resizable">1</property>
-    <property name="title">Clipboard</property>
-    <child>
-      <object class="GtkBox">
-        <property name="orientation">vertical</property>
-        <property name="margin-start">12</property>
-        <property name="margin-end">12</property>
-        <property name="margin-top">12</property>
-        <property name="margin-bottom">12</property>
-        <property name="spacing">12</property>
-        <child>
-          <object class="GtkLabel">
-            <property name="label">“Copy” will copy the selected data the clipboard, “Paste” will show the current clipboard contents. You can also drag the data to the bottom.</property>
-            <property name="wrap">1</property>
-            <property name="max-width-chars">40</property>
-          </object>
-        </child>
-        <child>
-          <object class="GtkBox">
-            <property name="spacing">12</property>
-            <child>
-              <object class="GtkDropDown" id="source_chooser">
-                <property name="valign">center</property>
-                <property name="model">
-                  <object class="GtkStringList">
-                    <items>
-                      <item>Text</item>
-                      <item>Color</item>
-                      <item>Image</item>
-                      <item>File</item>
-                    </items>
-                  </object>
-                </property>
-              </object>
-            </child>
-            <child>
-              <object class="GtkStack" id="source_stack">
-                <signal name="notify::visible-child" handler="source_changed_cb" object="copy_button"/>
-                <property name="vexpand">1</property>
-                <binding name="visible-child-name">
-                  <lookup name="string" type="GtkStringObject">
-                    <lookup name="selected-item">
-                      source_chooser
-                    </lookup>
-                  </lookup>
-                </binding>
-                <child>
-                  <object class="GtkStackPage">
-                    <property name="name">Text</property>
-                    <property name="child">
-                      <object class="GtkEntry" id="source_text">
-                        <property name="valign">center</property>
-                        <signal name="notify::text" handler="text_changed_cb" object="copy_button"/>
-                        <property name="text">Copy this!</property>
-                      </object>
-                    </property>
-                  </object>
-                </child>
-                <child>
-                  <object class="GtkStackPage">
-                    <property name="name">Color</property>
-                    <property name="child">
-                      <object class="GtkColorButton" id="source_color">
-                        <property name="valign">center</property>
-                        <property name="rgba">purple</property>
-                      </object>
-                    </property>
-                  </object>
-                </child>
-                <child>
-                  <object class="GtkStackPage">
-                    <property name="name">Image</property>
-                    <property name="child">
-                      <object class="GtkBox">
-                        <property name="valign">center</property>
-                        <style>
-                          <class name="linked"/>
-                        </style>
-                        <child>
-                          <object class="GtkToggleButton" id="image_rose">
-                            <property name="active">1</property>
-                            <child>
-                              <object class="GtkDragSource">
-                                <signal name="prepare" handler="drag_prepare"/>
-                              </object>
-                            </child>
-                            <child>
-                              <object class="GtkImage">
-                                <style>
-                                  <class name="large-icons"/>
-                                </style>
-                                <property name="paintable">resource:///transparent/portland-rose.jpg</property>
-                              </object>
-                            </child>
-                          </object>
-                        </child>
-                        <child>
-                          <object class="GtkToggleButton" id="image_floppy">
-                            <property name="group">image_rose</property>
-                            <child>
-                              <object class="GtkDragSource">
-                                <signal name="prepare" handler="drag_prepare"/>
-                              </object>
-                            </child>
-                            <child>
-                              <object class="GtkImage">
-                                <style>
-                                  <class name="large-icons"/>
-                                </style>
-                                <property name="paintable">resource:///images/floppybuddy.gif</property>
-                              </object>
-                            </child>
-                          </object>
-                        </child>
-                        <child>
-                          <object class="GtkToggleButton" id="image_logo">
-                            <property name="group">image_floppy</property>
-                            <child>
-                              <object class="GtkDragSource">
-                                <signal name="prepare" handler="drag_prepare"/>
-                              </object>
-                            </child>
-                            <child>
-                              <object class="GtkImage">
-                                <style>
-                                  <class name="large-icons"/>
-                                </style>
-                                <property name="paintable">resource:///images/org.gtk.Demo4.svg</property>
-                              </object>
-                            </child>
-                          </object>
-                        </child>
-                      </object>
-                    </property>
-                  </object>
-                </child>
-                <child>
-                  <object class="GtkStackPage">
-                    <property name="name">File</property>
-                    <property name="child">
-                      <object class="GtkButton" id="source_file">
-                        <child>
-                          <object class="GtkDragSource">
-                            <property name="propagation-phase">capture</property>
-                            <signal name="prepare" handler="drag_prepare"/>
-                          </object>
-                        </child>
-                        <property name="valign">center</property>
-                        <property name="child">
-                          <object class="GtkLabel">
-                            <property name="label">—</property>
-                            <property name="xalign">0</property>
-                            <property name="ellipsize">start</property>
-                          </object>
-                        </property>
-                        <signal name="clicked" handler="open_file_cb"/>
-                      </object>
-                    </property>
-                  </object>
-                </child>
-              </object>
-            </child>
-            <child>
-              <object class="GtkButton" id="copy_button">
-                <property name="valign">center</property>
-                <property name="label" translatable="yes">_Copy</property>
-                <signal name="clicked" handler="copy_button_clicked" object="source_stack"/>
-                <property name="use-underline">1</property>
-              </object>
-            </child>
-          </object>
-        </child>
-        <child>
-          <object class="GtkSeparator">
-          </object>
-        </child>
-        <child>
-          <object class="GtkBox">
-            <property name="spacing">12</property>
-            <child>
-              <object class="GtkDropTarget">
-                <property name="actions">copy</property>
-                <property name="formats">GdkTexture GdkPaintable GFile GdkRGBA gchararray</property>
-                <signal name="drop" handler="on_drop" object="dest_stack"/>
-              </object>
-            </child>
-            <child>
-              <object class="GtkButton" id="paste_button">
-                <property name="label" translatable="yes">_Paste</property>
-                <signal name="clicked" handler="paste_button_clicked" object="dest_stack"/>
-                <property name="use-underline">1</property>
-              </object>
-            </child>
-            <child>
-              <object class="GtkLabel">
-                <property name="xalign">0</property>
-                <binding name="label">
-                  <lookup name="visible-child-name" type="GtkStack">
-                    dest_stack
-                  </lookup>
-                </binding>
-              </object>
-            </child>
-            <child>
-              <object class="GtkStack" id="dest_stack">
-                <property name="halign">end</property>
-                <property name="valign">center</property>
-                <child>
-                  <object class="GtkStackPage">
-                    <property name="name"></property>
-                    <property name="child">
-                      <object class="GtkLabel">
-                      </object>
-                    </property>
-                  </object>
-                </child>
-                <child>
-                  <object class="GtkStackPage">
-                    <property name="name">Text</property>
-                    <property name="child">
-                      <object class="GtkLabel">
-                        <property name="halign">end</property>
-                        <property name="valign">center</property>
-                        <property name="xalign">0</property>
-                        <property name="ellipsize">end</property>
-                      </object>
-                    </property>
-                  </object>
-                </child>
-                <child>
-                  <object class="GtkStackPage">
-                    <property name="name">Image</property>
-                    <property name="child">
-                      <object class="GtkImage">
-                        <property name="halign">end</property>
-                        <property name="valign">center</property>
-                        <style>
-                          <class name="large-icons"/>
-                        </style>
-                      </object>
-                    </property>
-                  </object>
-                </child>
-                <child>
-                  <object class="GtkStackPage">
-                    <property name="name">Color</property>
-                    <property name="child">
-                      <object class="GtkBox">
-                        <property name="halign">end</property>
-                        <property name="valign">center</property>
-                        <child>
-                          <object class="GtkColorSwatch">
-                            <property name="accessible-role">img</property>
-                            <property name="can-focus">0</property>
-                            <property name="selectable">0</property>
-                            <property name="has-menu">0</property>
-                          </object>
-                        </child>
-                      </object>
-                    </property>
-                  </object>
-                </child>
-                <child>
-                  <object class="GtkStackPage">
-                    <property name="name">File</property>
-                    <property name="child">
-                      <object class="GtkLabel">
-                        <property name="halign">end</property>
-                        <property name="valign">center</property>
-                        <property name="xalign">0</property>
-                        <property name="hexpand">1</property>
-                        <property name="ellipsize">start</property>
-                      </object>
-                    </property>
-                  </object>
-                </child>
-              </object>
-            </child>
-          </object>
-        </child>
-      </object>
-    </child>
-  </object>
-</interface>
--- a/demos/gtk-demo/cogs.glsl
+++ b/demos/gtk-demo/cogs.glsl
@@ -1,224 +0,0 @@
-// Originally from: https://www.shadertoy.com/view/3ljyDD
-// License CC0: Hexagonal tiling + cog wheels
-//  Nothing fancy, just hexagonal tiling + cog wheels
-
-#define PI      3.141592654
-#define TAU     (2.0*PI)
-#define MROT(a) mat2(cos(a), sin(a), -sin(a), cos(a))
-
-float hash(in vec2 co) {
-  return fract(sin(dot(co.xy ,vec2(12.9898,58.233))) * 13758.5453);
-}
-
-float pcos(float a) {
-  return 0.5 + 0.5*cos(a);
-}
-
-void rot(inout vec2 p, float a) {
-  float c = cos(a);
-  float s = sin(a);
-  p = vec2(c*p.x + s*p.y, -s*p.x + c*p.y);
-}
-
-float modPolar(inout vec2 p, float repetitions) {
-  float angle = 2.0*PI/repetitions;
-  float a = atan(p.y, p.x) + angle/2.;
-  float r = length(p);
-  float c = floor(a/angle);
-  a = mod(a,angle) - angle/2.;
-  p = vec2(cos(a), sin(a))*r;
-  // For an odd number of repetitions, fix cell index of the cell in -x direction
-  // (cell index would be e.g. -5 and 5 in the two halves of the cell):
-  if (abs(c) >= (repetitions/2.0)) c = abs(c);
-  return c;
-}
-
-float pmin(float a, float b, float k) {
-  float h = clamp( 0.5+0.5*(b-a)/k, 0.0, 1.0 );
-  return mix( b, a, h ) - k*h*(1.0-h);
-}
-
-const vec2 sz       = vec2(1.0, sqrt(3.0));
-const vec2 hsz      = 0.5*sz;
-const float smallCount = 16.0;
-
-vec2 hextile(inout vec2 p) {
-  // See Art of Code: Hexagonal Tiling Explained!
-  // https://www.youtube.com/watch?v=VmrIDyYiJBA
-
-  vec2 p1 = mod(p, sz)-hsz;
-  vec2 p2 = mod(p - hsz*1.0, sz)-hsz;
-  vec2 p3 = mix(p2, p1, vec2(length(p1) < length(p2)));
-  vec2 n = p3 - p;
-  p = p3;
-
-  return n;
-}
-
-float circle(vec2 p, float r) {
-  return length(p) - r;
-}
-
-float box(vec2 p, vec2 b) {
-  vec2 d = abs(p)-b;
-  return length(max(d,0.0)) + min(max(d.x,d.y),0.0);
-}
-
-float unevenCapsule(vec2 p, float r1, float r2, float h) {
-  p.x = abs(p.x);
-  float b = (r1-r2)/h;
-  float a = sqrt(1.0-b*b);
-  float k = dot(p,vec2(-b,a));
-  if( k < 0.0 ) return length(p) - r1;
-  if( k > a*h ) return length(p-vec2(0.0,h)) - r2;
-  return dot(p, vec2(a,b) ) - r1;
-}
-
-float cogwheel(vec2 p, float innerRadius, float outerRadius, float cogs, float holes) {
-  float cogWidth  = 0.25*innerRadius*TAU/cogs;
-
-  float d0 = circle(p, innerRadius);
-
-  vec2 icp = p;
-  modPolar(icp, holes);
-  icp -= vec2(innerRadius*0.55, 0.0);
-  float d1 = circle(icp, innerRadius*0.25);
-
-  vec2 cp = p;
-  modPolar(cp, cogs);
-  cp -= vec2(innerRadius, 0.0);
-  float d2 = unevenCapsule(cp.yx, cogWidth, cogWidth*0.75, (outerRadius-innerRadius));
-
-  float d3 = circle(p, innerRadius*0.20);
-
-  float d = 1E6;
-  d = min(d, d0);
-  d = pmin(d, d2, 0.5*cogWidth);
-  d = min(d, d2);
-  d = max(d, -d1);
-  d = max(d, -d3);
-
-  return d;
-}
-
-float ccell1(vec2 p, float r) {
-  float d = 1E6;
-  const float bigCount = 60.0;
-
-  vec2 cp0 = p;
-  rot(cp0, -iTime*TAU/bigCount);
-  float d0 = cogwheel(cp0, 0.36, 0.38, bigCount, 5.0);
-
-  vec2 cp1 = p;
-  float nm = modPolar(cp1, 6.0);
-
-  cp1 -= vec2(0.5, 0.0);
-  rot(cp1, 0.2+TAU*nm/2.0 + iTime*TAU/smallCount);
-  float d1 = cogwheel(cp1, 0.11, 0.125, smallCount, 5.0);
-
-  d = min(d, d0);
-  d = min(d, d1);
-  return d;
-}
-
-float ccell2(vec2 p, float r) {
-  float d = 1E6;
-  vec2 cp0 = p;
-  float nm = modPolar(cp0, 6.0);
-  vec2 cp1 = cp0;
-  const float off = 0.275;
-  const float count = smallCount + 2.0;
-  cp0 -= vec2(off, 0.0);
-  rot(cp0, 0.+TAU*nm/2.0 - iTime*TAU/count);
-  float d0 = cogwheel(cp0, 0.09, 0.105, count, 5.0);
-
-
-  cp1 -= vec2(0.5, 0.0);
-  rot(cp1, 0.2+TAU*nm/2.0 + iTime*TAU/smallCount);
-  float d1 = cogwheel(cp1, 0.11, 0.125, smallCount, 5.0);
-
-  float l = length(p);
-  float d2 = l - (off+0.055);
-  float d3 = d2 + 0.020;;
-
-  vec2 tp0 = p;
-  modPolar(tp0, 60.0);
-  tp0.x -= off;
-  float d4 = box(tp0, vec2(0.0125, 0.005));
-
-  float ctime = -(iTime*0.05 + r)*TAU;
-
-  vec2 tp1 = p;
-  rot(tp1, ctime*12.0);
-  tp1.x -= 0.13;
-  float d5 = box(tp1, vec2(0.125, 0.005));
-
-  vec2 tp2 = p;
-  rot(tp2, ctime);
-  tp2.x -= 0.13*0.5;
-  float d6 = box(tp2, vec2(0.125*0.5, 0.0075));
-
-  float d7 = l - 0.025;
-  float d8 = l - 0.0125;
-
-  d = min(d, d0);
-  d = min(d, d1);
-  d = min(d, d2);
-  d = max(d, -d3);
-  d = min(d, d4);
-  d = min(d, d5);
-  d = min(d, d6);
-  d = min(d, d7);
-  d = max(d, -d8);
-
-  return d;
-}
-
-float df(vec2 p, float scale, inout vec2 nn) {
-  p /= scale;
-  nn = hextile(p);
-  nn = floor(nn + 0.5);
-  float r = hash(nn);
-
-  float d;;
-
-  if (r < 0.5) {
-    d = ccell1(p, r);
-  } else {
-    d = ccell2(p, r);
-  }
-
-  return d*scale;
-}
-
-vec3 postProcess(vec3 col, vec2 q)  {
-  //col = saturate(col);
-  col=pow(clamp(col,0.0,1.0),vec3(0.75));
-  col=col*0.6+0.4*col*col*(3.0-2.0*col);  // contrast
-  col=mix(col, vec3(dot(col, vec3(0.33))), -0.4);  // satuation
-  col*=0.5+0.5*pow(19.0*q.x*q.y*(1.0-q.x)*(1.0-q.y),0.7);  // vigneting
-  return col;
-}
-
-void mainImage(out vec4 fragColor, vec2 fragCoord) {
-  vec2 q = fragCoord/iResolution.xy;
-  vec2 p = -1.0 + 2.0*q;
-  p.x *= iResolution.x/iResolution.y;
-  float tm = iTime*0.1;
-  p += vec2(cos(tm), sin(tm*sqrt(0.5)));
-  float z = mix(0.5, 1.0, pcos(tm*sqrt(0.3)));
-  float aa = 4.0 / iResolution.y;
-
-  vec2 nn = vec2(0.0);
-  float d = df(p, z, nn);
-
-  vec3 col = vec3(160.0)/vec3(255.0);
-  vec3 baseCol = vec3(0.3);
-  vec4 logoCol = vec4(baseCol, 1.0)*smoothstep(-aa, 0.0, -d);
-  col = mix(col, logoCol.xyz, pow(logoCol.w, 8.0));
-  col += 0.4*pow(abs(sin(20.0*d)), 0.6);
-
-  col = postProcess(col, q);
-
-  fragColor = vec4(col, 1.0);
-}
--- a/demos/gtk-demo/cogs2.glsl
+++ b/demos/gtk-demo/cogs2.glsl
@@ -1,226 +0,0 @@
-uniform float iTime;
-
-// Originally from: https://www.shadertoy.com/view/3ljyDD
-// License CC0: Hexagonal tiling + cog wheels
-//  Nothing fancy, just hexagonal tiling + cog wheels
-
-#define PI      3.141592654
-#define TAU     (2.0*PI)
-#define MROT(a) mat2(cos(a), sin(a), -sin(a), cos(a))
-
-float hash(in vec2 co) {
-  return fract(sin(dot(co.xy ,vec2(12.9898,58.233))) * 13758.5453);
-}
-
-float pcos(float a) {
-  return 0.5 + 0.5*cos(a);
-}
-
-void rot(inout vec2 p, float a) {
-  float c = cos(a);
-  float s = sin(a);
-  p = vec2(c*p.x + s*p.y, -s*p.x + c*p.y);
-}
-
-float modPolar(inout vec2 p, float repetitions) {
-  float angle = 2.0*PI/repetitions;
-  float a = atan(p.y, p.x) + angle/2.;
-  float r = length(p);
-  float c = floor(a/angle);
-  a = mod(a,angle) - angle/2.;
-  p = vec2(cos(a), sin(a))*r;
-  // For an odd number of repetitions, fix cell index of the cell in -x direction
-  // (cell index would be e.g. -5 and 5 in the two halves of the cell):
-  if (abs(c) >= (repetitions/2.0)) c = abs(c);
-  return c;
-}
-
-float pmin(float a, float b, float k) {
-  float h = clamp( 0.5+0.5*(b-a)/k, 0.0, 1.0 );
-  return mix( b, a, h ) - k*h*(1.0-h);
-}
-
-const vec2 sz       = vec2(1.0, sqrt(3.0));
-const vec2 hsz      = 0.5*sz;
-const float smallCount = 16.0;
-
-vec2 hextile(inout vec2 p) {
-  // See Art of Code: Hexagonal Tiling Explained!
-  // https://www.youtube.com/watch?v=VmrIDyYiJBA
-
-  vec2 p1 = mod(p, sz)-hsz;
-  vec2 p2 = mod(p - hsz*1.0, sz)-hsz;
-  vec2 p3 = mix(p2, p1, vec2(length(p1) < length(p2)));
-  vec2 n = p3 - p;
-  p = p3;
-
-  return n;
-}
-
-float circle(vec2 p, float r) {
-  return length(p) - r;
-}
-
-float box(vec2 p, vec2 b) {
-  vec2 d = abs(p)-b;
-  return length(max(d,0.0)) + min(max(d.x,d.y),0.0);
-}
-
-float unevenCapsule(vec2 p, float r1, float r2, float h) {
-  p.x = abs(p.x);
-  float b = (r1-r2)/h;
-  float a = sqrt(1.0-b*b);
-  float k = dot(p,vec2(-b,a));
-  if( k < 0.0 ) return length(p) - r1;
-  if( k > a*h ) return length(p-vec2(0.0,h)) - r2;
-  return dot(p, vec2(a,b) ) - r1;
-}
-
-float cogwheel(vec2 p, float innerRadius, float outerRadius, float cogs, float holes) {
-  float cogWidth  = 0.25*innerRadius*TAU/cogs;
-
-  float d0 = circle(p, innerRadius);
-
-  vec2 icp = p;
-  modPolar(icp, holes);
-  icp -= vec2(innerRadius*0.55, 0.0);
-  float d1 = circle(icp, innerRadius*0.25);
-
-  vec2 cp = p;
-  modPolar(cp, cogs);
-  cp -= vec2(innerRadius, 0.0);
-  float d2 = unevenCapsule(cp.yx, cogWidth, cogWidth*0.75, (outerRadius-innerRadius));
-
-  float d3 = circle(p, innerRadius*0.20);
-
-  float d = 1E6;
-  d = min(d, d0);
-  d = pmin(d, d2, 0.5*cogWidth);
-  d = min(d, d2);
-  d = max(d, -d1);
-  d = max(d, -d3);
-
-  return d;
-}
-
-float ccell1(vec2 p, float r) {
-  float d = 1E6;
-  const float bigCount = 60.0;
-
-  vec2 cp0 = p;
-  rot(cp0, -iTime*TAU/bigCount);
-  float d0 = cogwheel(cp0, 0.36, 0.38, bigCount, 5.0);
-
-  vec2 cp1 = p;
-  float nm = modPolar(cp1, 6.0);
-
-  cp1 -= vec2(0.5, 0.0);
-  rot(cp1, 0.2+TAU*nm/2.0 + iTime*TAU/smallCount);
-  float d1 = cogwheel(cp1, 0.11, 0.125, smallCount, 5.0);
-
-  d = min(d, d0);
-  d = min(d, d1);
-  return d;
-}
-
-float ccell2(vec2 p, float r) {
-  float d = 1E6;
-  vec2 cp0 = p;
-  float nm = modPolar(cp0, 6.0);
-  vec2 cp1 = cp0;
-  const float off = 0.275;
-  const float count = smallCount + 2.0;
-  cp0 -= vec2(off, 0.0);
-  rot(cp0, 0.+TAU*nm/2.0 - iTime*TAU/count);
-  float d0 = cogwheel(cp0, 0.09, 0.105, count, 5.0);
-
-
-  cp1 -= vec2(0.5, 0.0);
-  rot(cp1, 0.2+TAU*nm/2.0 + iTime*TAU/smallCount);
-  float d1 = cogwheel(cp1, 0.11, 0.125, smallCount, 5.0);
-
-  float l = length(p);
-  float d2 = l - (off+0.055);
-  float d3 = d2 + 0.020;;
-
-  vec2 tp0 = p;
-  modPolar(tp0, 60.0);
-  tp0.x -= off;
-  float d4 = box(tp0, vec2(0.0125, 0.005));
-
-  float ctime = -(iTime*0.05 + r)*TAU;
-
-  vec2 tp1 = p;
-  rot(tp1, ctime*12.0);
-  tp1.x -= 0.13;
-  float d5 = box(tp1, vec2(0.125, 0.005));
-
-  vec2 tp2 = p;
-  rot(tp2, ctime);
-  tp2.x -= 0.13*0.5;
-  float d6 = box(tp2, vec2(0.125*0.5, 0.0075));
-
-  float d7 = l - 0.025;
-  float d8 = l - 0.0125;
-
-  d = min(d, d0);
-  d = min(d, d1);
-  d = min(d, d2);
-  d = max(d, -d3);
-  d = min(d, d4);
-  d = min(d, d5);
-  d = min(d, d6);
-  d = min(d, d7);
-  d = max(d, -d8);
-
-  return d;
-}
-
-float df(vec2 p, float scale, inout vec2 nn) {
-  p /= scale;
-  nn = hextile(p);
-  nn = floor(nn + 0.5);
-  float r = hash(nn);
-
-  float d;;
-
-  if (r < 0.5) {
-    d = ccell1(p, r);
-  } else {
-    d = ccell2(p, r);
-  }
-
-  return d*scale;
-}
-
-vec3 postProcess(vec3 col, vec2 q)  {
-  //col = saturate(col);
-  col=pow(clamp(col,0.0,1.0),vec3(0.75));
-  col=col*0.6+0.4*col*col*(3.0-2.0*col);  // contrast
-  col=mix(col, vec3(dot(col, vec3(0.33))), -0.4);  // satuation
-  col*=0.5+0.5*pow(19.0*q.x*q.y*(1.0-q.x)*(1.0-q.y),0.7);  // vigneting
-  return col;
-}
-
-void mainImage(out vec4 fragColor, in vec2 fragCoord, in vec2 resolution, in vec2 uv) {
-  vec2 q = fragCoord/resolution.xy;
-  vec2 p = -1.0 + 2.0*q;
-  p.x *= resolution.x/resolution.y;
-  float tm = iTime*0.1;
-  p += vec2(cos(tm), sin(tm*sqrt(0.5)));
-  float z = mix(0.5, 1.0, pcos(tm*sqrt(0.3)));
-  float aa = 4.0 / resolution.y;
-
-  vec2 nn = vec2(0.0);
-  float d = df(p, z, nn);
-
-  vec3 col = vec3(160.0)/vec3(255.0);
-  vec3 baseCol = vec3(0.3);
-  vec4 logoCol = vec4(baseCol, 1.0)*smoothstep(-aa, 0.0, -d);
-  col = mix(col, logoCol.xyz, pow(logoCol.w, 8.0));
-  col += 0.4*pow(abs(sin(20.0*d)), 0.6);
-
-  col = postProcess(col, q);
-
-  fragColor = vec4(col, 1.0);
-}
--- a/demos/gtk-demo/combobox.c
+++ b/demos/gtk-demo/combobox.c
@@ -1,5 +1,4 @@
 /* Combo Boxes
- * #Keywords: GtkCellRenderer
 *
 * The GtkComboBox widget allows to select one option out of a list.
 * The GtkComboBoxEntry additionally allows the user to enter a value
--- a/demos/gtk-demo/constraints.c
+++ b/demos/gtk-demo/constraints.c
@@ -1,16 +1,8 @@
-/* Constraints/Simple Constraints
- * #Keywords: GtkLayoutManager
+/* Constraints/Simple
 *
 * GtkConstraintLayout provides a layout manager that uses relations
- * between widgets (also known as “constraints”) to compute the position
+ * between widgets (also known as "constraints") to compute the position
 * and size of each child.
- *
- * In addition to child widgets, the constraints can involve spacer
- * objects (also known as “guides”). This example has a guide between
- * the two buttons in the top row.
- *
- * Try resizing the window to see how the constraints react to update
- * the layout.
 */

 #include <glib/gi18n.h>
@@ -241,12 +233,15 @@ simple_grid_init (SimpleGrid *self)

  self->button1 = gtk_button_new_with_label ("Child 1");
  gtk_widget_set_parent (self->button1, widget);
+  gtk_widget_set_name (self->button1, "button1");

  self->button2 = gtk_button_new_with_label ("Child 2");
  gtk_widget_set_parent (self->button2, widget);
+  gtk_widget_set_name (self->button2, "button2");

  self->button3 = gtk_button_new_with_label ("Child 3");
  gtk_widget_set_parent (self->button3, widget);
+  gtk_widget_set_name (self->button3, "button3");

  GtkLayoutManager *manager = gtk_widget_get_layout_manager (GTK_WIDGET (self));
  build_constraints (self, GTK_CONSTRAINT_LAYOUT (manager));
@@ -259,12 +254,15 @@ do_constraints (GtkWidget *do_widget)

 if (!window)
   {
-     GtkWidget *box, *grid;
+     GtkWidget *header, *box, *grid, *button;

     window = gtk_window_new ();
     gtk_window_set_display (GTK_WINDOW (window), gtk_widget_get_display (do_widget));
-     gtk_window_set_title (GTK_WINDOW (window), "Simple Constraints");
-     gtk_window_set_default_size (GTK_WINDOW (window), 260, -1);
+     gtk_window_set_title (GTK_WINDOW (window), "Constraints");
+
+     header = gtk_header_bar_new ();
+     gtk_header_bar_set_show_title_buttons (GTK_HEADER_BAR (header), FALSE);
+     gtk_window_set_titlebar (GTK_WINDOW (window), header);
     g_object_add_weak_pointer (G_OBJECT (window), (gpointer *)&window);

     box = gtk_box_new (GTK_ORIENTATION_VERTICAL, 12);
@@ -274,6 +272,12 @@ do_constraints (GtkWidget *do_widget)
     gtk_widget_set_hexpand (grid, TRUE);
     gtk_widget_set_vexpand (grid, TRUE);
     gtk_box_append (GTK_BOX (box), grid);
+
+     button = gtk_button_new_with_label ("Close");
+     gtk_box_append (GTK_BOX (box), button);
+     gtk_widget_set_hexpand (grid, TRUE);
+     g_signal_connect_swapped (button, "clicked",
+                               G_CALLBACK (gtk_window_destroy), window);
   }

 if (!gtk_widget_get_visible (window))
--- a/demos/gtk-demo/constraints_interactive.c
+++ b/demos/gtk-demo/constraints_interactive.c
@@ -1,7 +1,6 @@
-/* Constraints/Interactive Constraints
- * #Keywords: GtkConstraintLayout
+/* Constraints/Interactive
 *
- * This example shows how constraints can be updated during user interaction.
+ * Demonstrate how constraints can be updates during user interaction.
 * The vertical edge between the buttons can be dragged with the mouse.
 */

@@ -205,18 +204,21 @@ interactive_grid_init (InteractiveGrid *self)
 }

 GtkWidget *
-do_constraints_interactive (GtkWidget *do_widget)
+do_constraints2 (GtkWidget *do_widget)
 {
 static GtkWidget *window;

 if (!window)
   {
-     GtkWidget *box, *grid;
+     GtkWidget *header, *box, *grid, *button;

     window = gtk_window_new ();
     gtk_window_set_display (GTK_WINDOW (window), gtk_widget_get_display (do_widget));
-     gtk_window_set_title (GTK_WINDOW (window), "Interactive Constraints");
-     gtk_window_set_default_size (GTK_WINDOW (window), 260, -1);
+     gtk_window_set_title (GTK_WINDOW (window), "Constraints");
+
+     header = gtk_header_bar_new ();
+     gtk_header_bar_set_show_title_buttons (GTK_HEADER_BAR (header), FALSE);
+     gtk_window_set_titlebar (GTK_WINDOW (window), header);
     g_object_add_weak_pointer (G_OBJECT (window), (gpointer *)&window);

     box = gtk_box_new (GTK_ORIENTATION_VERTICAL, 12);
@@ -226,6 +228,12 @@ do_constraints_interactive (GtkWidget *do_widget)
     gtk_widget_set_hexpand (grid, TRUE);
     gtk_widget_set_vexpand (grid, TRUE);
     gtk_box_append (GTK_BOX (box), grid);
+
+     button = gtk_button_new_with_label ("Close");
+     gtk_box_append (GTK_BOX (box), button);
+     gtk_widget_set_hexpand (grid, TRUE);
+     g_signal_connect_swapped (button, "clicked",
+                               G_CALLBACK (gtk_window_destroy), window);
   }

 if (!gtk_widget_get_visible (window))
--- a/demos/gtk-demo/constraints_vfl.c
+++ b/demos/gtk-demo/constraints_vfl.c
@@ -2,10 +2,6 @@
 *
 * GtkConstraintLayout allows defining constraints using a
 * compact syntax called Visual Format Language, or VFL.
- *
- * A typical example of a VFL specification looks like this:
- *
- * H:|-[button1(==button2)]-12-[button2]-|
 */

 #include <glib/gi18n.h>
@@ -128,18 +124,21 @@ vfl_grid_init (VflGrid *self)
 }

 GtkWidget *
-do_constraints_vfl (GtkWidget *do_widget)
+do_constraints3 (GtkWidget *do_widget)
 {
 static GtkWidget *window;

 if (!window)
   {
-     GtkWidget *box, *grid;
+     GtkWidget *header, *box, *grid, *button;

     window = gtk_window_new ();
     gtk_window_set_display (GTK_WINDOW (window), gtk_widget_get_display (do_widget));
-     gtk_window_set_title (GTK_WINDOW (window), "Constraints — VFL");
-     gtk_window_set_default_size (GTK_WINDOW (window), 260, -1);
+     gtk_window_set_title (GTK_WINDOW (window), "Constraints");
+
+     header = gtk_header_bar_new ();
+     gtk_header_bar_set_show_title_buttons (GTK_HEADER_BAR (header), FALSE);
+     gtk_window_set_titlebar (GTK_WINDOW (window), header);
     g_object_add_weak_pointer (G_OBJECT (window), (gpointer *)&window);

     box = gtk_box_new (GTK_ORIENTATION_VERTICAL, 12);
@@ -149,6 +148,12 @@ do_constraints_vfl (GtkWidget *do_widget)
     gtk_widget_set_hexpand (grid, TRUE);
     gtk_widget_set_vexpand (grid, TRUE);
     gtk_box_append (GTK_BOX (box), grid);
+
+     button = gtk_button_new_with_label ("Close");
+     gtk_box_append (GTK_BOX (box), button);
+     gtk_widget_set_hexpand (grid, TRUE);
+     g_signal_connect_swapped (button, "clicked",
+                               G_CALLBACK (gtk_window_destroy), window);
   }

 if (!gtk_widget_get_visible (window))
--- a/demos/gtk-demo/constraints_builder.c
+++ b/demos/gtk-demo/constraints_builder.c
@@ -1,74 +0,0 @@
-/* Constraints/Builder
- *
- * GtkConstraintLayouts can be created in .ui files, and constraints can
- * be set up at that time as well, as this example demonstrates. It shows
- * various ways to do spacing and sizing with constraints.
- *
- * Make the window wider to see the rows react differently
- */
-
-#include <glib/gi18n.h>
-#include <gtk/gtk.h>
-
-G_DECLARE_FINAL_TYPE (ConstraintsGrid, constraints_grid, CONSTRAINTS, GRID, GtkWidget)
-
-struct _ConstraintsGrid
-{
-  GtkWidget parent_instance;
-};
-
-G_DEFINE_TYPE (ConstraintsGrid, constraints_grid, GTK_TYPE_WIDGET)
-
-static void
-constraints_grid_init (ConstraintsGrid *grid)
-{
-}
-
-static void
-constraints_grid_dispose (GObject *object)
-{
-  GtkWidget *widget = GTK_WIDGET (object);
-  GtkWidget *child;
-
-  while ((child = gtk_widget_get_first_child (widget)))
-    gtk_widget_unparent (child);
-
-  G_OBJECT_CLASS (constraints_grid_parent_class)->dispose (object);
-}
-
-static void
-constraints_grid_class_init (ConstraintsGridClass *klass)
-{
-  GObjectClass *object_class = G_OBJECT_CLASS (klass);
-
-  object_class->dispose = constraints_grid_dispose;
-}
-
-GtkWidget *
-do_constraints_builder (GtkWidget *do_widget)
-{
- static GtkWidget *window;
-
- if (!window)
-   {
-     GtkBuilder *builder;
-
-     g_type_ensure (constraints_grid_get_type ());
-
-     builder = gtk_builder_new_from_resource ("/constraints_builder/constraints_builder.ui");
-
-     window = GTK_WIDGET (gtk_builder_get_object (builder, "window1"));
-     gtk_window_set_display (GTK_WINDOW (window),
-                             gtk_widget_get_display (do_widget));
-     g_object_add_weak_pointer (G_OBJECT (window), (gpointer *)&window);
-
-     g_object_unref (builder);
-   }
-
- if (!gtk_widget_get_visible (window))
-   gtk_widget_show (window);
- else
-   gtk_window_destroy (GTK_WINDOW (window));
-
- return window;
-}
--- a/demos/gtk-demo/constraints_builder.ui
+++ b/demos/gtk-demo/constraints_builder.ui
@@ -1,460 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<interface>
-  <object class="GtkWindow" id="window1">
-    <property name="title" translatable="yes">Constraints — Builder</property>
-    <property name="default-width">260</property>
-    <child>
-      <object class="ConstraintsGrid">
-        <property name="halign">fill</property>
-        <property name="valign">fill</property>
-        <property name="margin-top">10</property>
-        <property name="margin-bottom">10</property>
-        <property name="margin-start">10</property>
-        <property name="margin-end">10</property>
-        <property name="layout-manager">
-          <object class="GtkConstraintLayout">
-            <constraints>
-              <guide name="guide1" min-width="10" nat-width="200" strength="weak"/>
-              <guide name="guide2" min-width="10" nat-width="200" strength="weak"/>
-              <guide name="guide3" min-width="10" nat-width="200" strength="weak"/>
-              <guide name="guide4" min-width="10" nat-width="200" strength="weak"/>
-              <guide name="guide5" min-width="10" nat-width="200" strength="weak"/>
-              <guide name="guide6" min-width="10" nat-width="200" strength="weak"/>
-              <guide name="guide7" min-width="10" nat-width="200" strength="weak"/>
-              <guide name="guide8" min-width="10" nat-width="200" strength="weak"/>
-              <guide name="guide9" min-width="0" nat-width="200" strength="weak"/>
-              <guide name="guide10" min-width="0" nat-width="200" strength="weak"/>
-              <guide name="barrier1" min-height="10"/>
-              <guide name="barrier2" min-height="10"/>
-              <guide name="barrier3" min-height="10"/>
-              <guide name="barrier4" min-height="10"/>
-
-              <!-- Spread Chain -->
-              <constraint target="super" target-attribute="top"
-                          relation="eq"
-                          source="button1" source-attribute="top"
-                          strength="required"/>
-              <constraint target="super" target-attribute="top"
-                          relation="eq"
-                          source="button2" source-attribute="top"
-                          strength="required"/>
-              <constraint target="super" target-attribute="top"
-                          relation="eq"
-                          source="button3" source-attribute="top"
-                          strength="required"/>
-
-              <constraint target="super" target-attribute="left"
-                          relation="eq"
-                          source="guide1" source-attribute="left"
-                          strength="required"/>
-              <constraint target="button1" target-attribute="left"
-                          relation="eq"
-                          source="guide1" source-attribute="right"
-                          strength="required"/>
-              <constraint target="guide2" target-attribute="left"
-                          relation="eq"
-                          source="button1" source-attribute="right"
-                          strength="required"/>
-              <constraint target="button2" target-attribute="left"
-                          relation="eq"
-                          source="guide2" source-attribute="right"
-                          strength="required"/>
-              <constraint target="guide3" target-attribute="left"
-                          relation="eq"
-                          source="button2" source-attribute="right"
-                          strength="required"/>
-              <constraint target="button3" target-attribute="left"
-                          relation="eq"
-                          source="guide3" source-attribute="right"
-                          strength="required"/>
-              <constraint target="guide4" target-attribute="left"
-                          relation="eq"
-                          source="button3" source-attribute="right"
-                          strength="required"/>
-              <constraint target="super" target-attribute="right"
-                          relation="eq"
-                          source="guide4" source-attribute="right"
-                          strength="required"/>
-
-              <constraint target="guide1" target-attribute="width"
-                          relation="eq"
-                          source="guide2" source-attribute="width"
-                          strength="required"/>
-              <constraint target="guide2" target-attribute="width"
-                          relation="eq"
-                          source="guide3" source-attribute="width"
-                          strength="required"/>
-              <constraint target="guide3" target-attribute="width"
-                          relation="eq"
-                          source="guide4" source-attribute="width"
-                          strength="required"/>
-
-              <constraint target="button1" target-attribute="width"
-                          relation="eq"
-                          source="button2" source-attribute="width"
-                          strength="required"/>
-              <constraint target="button2" target-attribute="width"
-                          relation="eq"
-                          source="button3" source-attribute="width"
-                          strength="required"/>
-
-              <constraint target="button1" target-attribute="bottom"
-                          relation="eq"
-                          source="barrier1" source-attribute="top"
-                          strength="required"/>
-              <constraint target="button2" target-attribute="bottom"
-                          relation="eq"
-                          source="barrier1" source-attribute="top"
-                          strength="required"/>
-              <constraint target="button3" target-attribute="bottom"
-                          relation="eq"
-                          source="barrier1" source-attribute="top"
-                          strength="required"/>
-
-              <!-- Spread Inside Chain -->
-
-              <constraint target="super" target-attribute="left"
-                          relation="eq"
-                          source="button4" source-attribute="left"
-                          strength="required"/>
-              <constraint target="guide5" target-attribute="left"
-                          relation="eq"
-                          source="button4" source-attribute="right"
-                          strength="required"/>
-              <constraint target="button5" target-attribute="left"
-                          relation="eq"
-                          source="guide5" source-attribute="right"
-                          strength="required"/>
-              <constraint target="guide6" target-attribute="left"
-                          relation="eq"
-                          source="button5" source-attribute="right"
-                          strength="required"/>
-              <constraint target="button6" target-attribute="left"
-                          relation="eq"
-                          source="guide6" source-attribute="right"
-                          strength="required"/>
-              <constraint target="super" target-attribute="right"
-                          relation="eq"
-                          source="button6" source-attribute="right"
-                          strength="required"/>
-
-              <constraint target="guide5" target-attribute="width"
-                          relation="eq"
-                          source="guide6" source-attribute="width"
-                          strength="required"/>
-
-              <constraint target="button4" target-attribute="width"
-                          relation="eq"
-                          source="button5" source-attribute="width"
-                          strength="required"/>
-              <constraint target="button5" target-attribute="width"
-                          relation="eq"
-                          source="button6" source-attribute="width"
-                          strength="required"/>
-
-              <constraint target="button4" target-attribute="top"
-                          relation="eq"
-                          source="barrier1" source-attribute="bottom"
-                          strength="required"/>
-              <constraint target="button5" target-attribute="top"
-                          relation="eq"
-                          source="barrier1" source-attribute="bottom"
-                          strength="required"/>
-              <constraint target="button6" target-attribute="top"
-                          relation="eq"
-                          source="barrier1" source-attribute="bottom"
-                          strength="required"/>
-
-              <constraint target="button4" target-attribute="bottom"
-                          relation="eq"
-                          source="barrier2" source-attribute="top"
-                          strength="required"/>
-              <constraint target="button5" target-attribute="bottom"
-                          relation="eq"
-                          source="barrier2" source-attribute="top"
-                          strength="required"/>
-              <constraint target="button6" target-attribute="bottom"
-                          relation="eq"
-                          source="barrier2" source-attribute="top"
-                          strength="required"/>
-
-              <!-- Weighted Chain -->
-
-              <constraint target="super" target-attribute="left"
-                          relation="eq"
-                          source="button7" source-attribute="left"
-                          strength="required"/>
-              <constraint target="button8" target-attribute="left"
-                          relation="eq"
-                          source="button7" source-attribute="right"
-                          constant="10"
-                          strength="required"/>
-              <constraint target="button9" target-attribute="left"
-                          relation="eq"
-                          source="button8" source-attribute="right"
-                          constant="10"
-                          strength="required"/>
-              <constraint target="super" target-attribute="right"
-                          relation="eq"
-                          source="button9" source-attribute="right"
-                          strength="required"/>
-
-              <constraint target="button8" target-attribute="width"
-                          relation="eq"
-                          source="button7" source-attribute="width"
-                          multiplier="2"
-                          strength="required"/>
-              <constraint target="button9" target-attribute="width"
-                          relation="eq"
-                          source="button7" source-attribute="width"
-                          multiplier="3"
-                          strength="required"/>
-
-              <constraint target="button7" target-attribute="top"
-                          relation="eq"
-                          source="barrier2" source-attribute="bottom"
-                          strength="required"/>
-              <constraint target="button8" target-attribute="top"
-                          relation="eq"
-                          source="barrier2" source-attribute="bottom"
-                          strength="required"/>
-              <constraint target="button9" target-attribute="top"
-                          relation="eq"
-                          source="barrier2" source-attribute="bottom"
-                          strength="required"/>
-
-              <constraint target="button7" target-attribute="bottom"
-                          relation="eq"
-                          source="barrier3" source-attribute="top"
-                          strength="required"/>
-              <constraint target="button8" target-attribute="bottom"
-                          relation="eq"
-                          source="barrier3" source-attribute="top"
-                          strength="required"/>
-              <constraint target="button9" target-attribute="bottom"
-                          relation="eq"
-                          source="barrier3" source-attribute="top"
-                          strength="required"/>
-
-              <!-- Packed Chain -->
-
-              <constraint target="super" target-attribute="left"
-                          relation="eq"
-                          source="guide7" source-attribute="left"
-                          strength="required"/>
-              <constraint target="button10" target-attribute="left"
-                          relation="eq"
-                          source="guide7" source-attribute="right"
-                          strength="required"/>
-              <constraint target="button11" target-attribute="left"
-                          relation="eq"
-                          source="button10" source-attribute="right"
-                          constant="10"
-                          strength="required"/>
-              <constraint target="button12" target-attribute="left"
-                          relation="eq"
-                          source="button11" source-attribute="right"
-                          constant="10"
-                          strength="required"/>
-              <constraint target="guide8" target-attribute="left"
-                          relation="eq"
-                          source="button12" source-attribute="right"
-                          strength="required"/>
-              <constraint target="super" target-attribute="right"
-                          relation="eq"
-                          source="guide8" source-attribute="right"
-                          strength="required"/>
-
-              <constraint target="guide7" target-attribute="width"
-                          relation="eq"
-                          source="guide8" source-attribute="width"
-                          strength="required"/>
-
-              <constraint target="button10" target-attribute="width"
-                          relation="eq"
-                          source="button11" source-attribute="width"
-                          strength="required"/>
-              <constraint target="button11" target-attribute="width"
-                          relation="eq"
-                          source="button12" source-attribute="width"
-                          strength="required"/>
-
-              <constraint target="button10" target-attribute="top"
-                          relation="eq"
-                          source="barrier3" source-attribute="bottom"
-                          strength="required"/>
-              <constraint target="button11" target-attribute="top"
-                          relation="eq"
-                          source="barrier3" source-attribute="bottom"
-                          strength="required"/>
-              <constraint target="button12" target-attribute="top"
-                          relation="eq"
-                          source="barrier3" source-attribute="bottom"
-                          strength="required"/>
-
-              <constraint target="button10" target-attribute="bottom"
-                          relation="eq"
-                          source="barrier4" source-attribute="top"
-                          strength="required"/>
-              <constraint target="button11" target-attribute="bottom"
-                          relation="eq"
-                          source="barrier4" source-attribute="top"
-                          strength="required"/>
-              <constraint target="button12" target-attribute="bottom"
-                          relation="eq"
-                          source="barrier4" source-attribute="top"
-                          strength="required"/>
-
-              <!-- Packed Chain with Bias -->
-
-              <constraint target="super" target-attribute="left"
-                          relation="eq"
-                          source="guide9" source-attribute="left"
-                          strength="required"/>
-              <constraint target="button13" target-attribute="left"
-                          relation="eq"
-                          source="guide9" source-attribute="right"
-                          constant="10"
-                          strength="required"/>
-              <constraint target="button14" target-attribute="left"
-                          relation="eq"
-                          source="button13" source-attribute="right"
-                          constant="10"
-                          strength="required"/>
-              <constraint target="button15" target-attribute="left"
-                          relation="eq"
-                          source="button14" source-attribute="right"
-                          constant="10"
-                          strength="required"/>
-              <constraint target="guide10" target-attribute="left"
-                          relation="eq"
-                          source="button15" source-attribute="right"
-                          constant="10"
-                          strength="required"/>
-              <constraint target="super" target-attribute="right"
-                          relation="eq"
-                          source="guide10" source-attribute="right"
-                          strength="required"/>
-
-              <constraint target="guide9" target-attribute="width"
-                          relation="eq"
-                          source="guide10" source-attribute="width"
-                          multiplier="4"
-                          strength="required"/>
-
-              <constraint target="button13" target-attribute="width"
-                          relation="eq"
-                          source="button14" source-attribute="width"
-                          strength="required"/>
-              <constraint target="button14" target-attribute="width"
-                          relation="eq"
-                          source="button15" source-attribute="width"
-                          strength="required"/>
-
-              <constraint target="button13" target-attribute="top"
-                          relation="eq"
-                          source="barrier4" source-attribute="bottom"
-                          strength="required"/>
-              <constraint target="button14" target-attribute="top"
-                          relation="eq"
-                          source="barrier4" source-attribute="bottom"
-                          strength="required"/>
-              <constraint target="button15" target-attribute="top"
-                          relation="eq"
-                          source="barrier4" source-attribute="bottom"
-                          strength="required"/>
-
-              <constraint target="super" target-attribute="bottom"
-                          relation="ge"
-                          source="button13" source-attribute="bottom"
-                          strength="required"/>
-              <constraint target="super" target-attribute="bottom"
-                          relation="ge"
-                          source="button14" source-attribute="bottom"
-                          strength="required"/>
-              <constraint target="super" target-attribute="bottom"
-                          relation="ge"
-                          source="button15" source-attribute="bottom"
-                          strength="required"/>
-            </constraints>
-          </object>
-        </property>
-        <child>
-          <object class="GtkButton" id="button1">
-            <property name="label">A</property>
-          </object>
-        </child>
-        <child>
-          <object class="GtkButton" id="button2">
-            <property name="label">B</property>
-          </object>
-        </child>
-        <child>
-          <object class="GtkButton" id="button3">
-            <property name="label">C</property>
-          </object>
-        </child>
-        <child>
-          <object class="GtkButton" id="button4">
-            <property name="label">A</property>
-          </object>
-        </child>
-        <child>
-          <object class="GtkButton" id="button5">
-            <property name="label">B</property>
-          </object>
-        </child>
-        <child>
-          <object class="GtkButton" id="button6">
-            <property name="label">C</property>
-          </object>
-        </child>
-        <child>
-          <object class="GtkButton" id="button7">
-            <property name="label">A</property>
-          </object>
-        </child>
-        <child>
-          <object class="GtkButton" id="button8">
-            <property name="label">B</property>
-          </object>
-        </child>
-        <child>
-          <object class="GtkButton" id="button9">
-            <property name="label">C</property>
-          </object>
-        </child>
-        <child>
-          <object class="GtkButton" id="button10">
-            <property name="label">A</property>
-          </object>
-        </child>
-        <child>
-          <object class="GtkButton" id="button11">
-            <property name="label">B</property>
-          </object>
-        </child>
-        <child>
-          <object class="GtkButton" id="button12">
-            <property name="label">C</property>
-          </object>
-        </child>
-        <child>
-          <object class="GtkButton" id="button13">
-            <property name="label">A</property>
-          </object>
-        </child>
-        <child>
-          <object class="GtkButton" id="button14">
-            <property name="label">B</property>
-          </object>
-        </child>
-        <child>
-          <object class="GtkButton" id="button15">
-            <property name="label">C</property>
-          </object>
-        </child>
-      </object>
-    </child>
-  </object>
-</interface>
--- a/demos/gtk-demo/crosswarp.glsl
+++ b/demos/gtk-demo/crosswarp.glsl
@@ -1,27 +0,0 @@
-uniform float progress;
-uniform sampler2D u_texture1;
-uniform sampler2D u_texture2;
-
-vec4 getFromColor (vec2 uv) {
-  return GskTexture(u_texture1, uv);
-}
-
-vec4 getToColor (vec2 uv) {
-  return GskTexture(u_texture2, uv);
-}
-
-// Source: https://gl-transitions.com/editor/crosswarp
-// Author: Eke Péter <peterekepeter@gmail.com>
-// License: MIT
-
-vec4 transition(vec2 p) {
-  float x = progress;
-  x=smoothstep(.0,1.0,(x*2.0+p.x-1.0));
-  return mix(getFromColor((p-.5)*(1.-x)+.5), getToColor((p-.5)*x+.5), x);
-}
-
-
-void mainImage(out vec4 fragColor, in vec2 fragCoord, in vec2 resolution, in vec2 uv)
-{
-  fragColor = transition(uv);
-}
--- a/demos/gtk-demo/css_accordion.c
+++ b/demos/gtk-demo/css_accordion.c
@@ -1,6 +1,7 @@
 /* Theming/CSS Accordion
 *
 * A simple accordion demo written using CSS transitions and multiple backgrounds
+ *
 */

 #include <gtk/gtk.h>
--- a/demos/gtk-demo/css_basics.c
+++ b/demos/gtk-demo/css_basics.c
@@ -1,7 +1,8 @@
 /* Theming/CSS Basics
 *
- * GTK themes are written using CSS. Every widget is build of multiple items
+ * Gtk themes are written using CSS. Every widget is build of multiple items
 * that you can style very similarly to a regular website.
+ *
 */

 #include <gtk/gtk.h>
--- a/demos/gtk-demo/css_basics.css
+++ b/demos/gtk-demo/css_basics.css
@@ -15,10 +15,6 @@
  border: 1px solid;
 }

-window {
-  background-color: white;
-}
-
 /* Make sure selections are visible */
 selection {
  background-color: darkGreen;
--- a/demos/gtk-demo/css_multiplebgs.c
+++ b/demos/gtk-demo/css_multiplebgs.c
@@ -1,7 +1,8 @@
 /* Theming/Multiple Backgrounds
 *
- * GTK themes are written using CSS. Every widget is build of multiple items
+ * Gtk themes are written using CSS. Every widget is build of multiple items
 * that you can style very similarly to a regular website.
+ *
 */

 #include <gtk/gtk.h>
--- a/demos/gtk-demo/css_pixbufs.c
+++ b/demos/gtk-demo/css_pixbufs.c
@@ -1,7 +1,6 @@
 /* Theming/Animated Backgrounds
 *
- * This demo is in honour of a classic Pixbufs demo.
- *
+ * This demo is done in honour of the Pixbufs demo further down.
 * It is done exclusively with CSS as the background of the window.
 */

--- a/demos/gtk-demo/css_pixbufs.css
+++ b/demos/gtk-demo/css_pixbufs.css
@@ -46,19 +46,19 @@
 }

@keyframes size-the-image {
-    0% { background-size: 96px, 12px, 96px, 12px, 96px, 12px, 96px, 12px, auto; }
-    100% { background-size: 12px, 96px, 12px, 96px, 12px, 96px, 12px, 96px, auto; }
+    0% { background-size: 96px, 12px, 96px, 12px, 96px, 12px, 96px, 12px, auto }
+    100% { background-size: 12px, 96px, 12px, 96px, 12px, 96px, 12px, 96px, auto }
 }

 window {
-    background-image: url("resource://css_pixbufs/images/apple-red.png"),
-                      url("resource://css_pixbufs/images/gnome-applets.png"),
-                      url("resource://css_pixbufs/images/gnome-calendar.png"),
-                      url("resource://css_pixbufs/images/gnome-foot.png"),
-                      url("resource://css_pixbufs/images/gnome-gmush.png"),
-                      url("resource://css_pixbufs/images/gnome-gimp.png"),
-                      url("resource://css_pixbufs/images/gnome-gsame.png"),
-                      url("resource://css_pixbufs/images/gnu-keys.png"),
+    background-image: url("resource://css_pixbufs/apple-red.png"),
+                      url("resource://css_pixbufs/gnome-applets.png"),
+                      url("resource://css_pixbufs/gnome-calendar.png"),
+                      url("resource://css_pixbufs/gnome-foot.png"),
+                      url("resource://css_pixbufs/gnome-gmush.png"),
+                      url("resource://css_pixbufs/gnome-gimp.png"),
+                      url("resource://css_pixbufs/gnome-gsame.png"),
+                      url("resource://css_pixbufs/gnu-keys.png"),
                      url("resource://css_pixbufs/background.jpg");
    background-position: 50.00% 75.00%, 67.68% 67.68%, 75.00% 50.00%, 67.68% 32.32%, 50.00% 25.00%, 32.32% 32.32%, 25.00% 50.00%, 32.32% 67.68%, 0% 0%;
    background-repeat: no-repeat, no-repeat, no-repeat, no-repeat, no-repeat, no-repeat, no-repeat, no-repeat, repeat;
--- a/demos/gtk-demo/css_shadows.c
+++ b/demos/gtk-demo/css_shadows.c
@@ -106,7 +106,6 @@ do_css_shadows (GtkWidget *do_widget)

      child = create_toolbar ();
      gtk_paned_set_start_child (GTK_PANED (paned), child);
-      gtk_paned_set_resize_start_child (GTK_PANED (paned), FALSE);

      text = gtk_text_buffer_new (NULL);
      gtk_text_buffer_create_tag (text,
--- a/demos/gtk-demo/cursors.ui
+++ b/demos/gtk-demo/cursors.ui
@@ -4,7 +4,7 @@
    <property name="name">default</property>
  </object>
  <object class="GdkCursor" id="default_cursor_image">
-    <property name="texture">resource:///cursors/images/default_cursor.png</property>
+    <property name="texture">resource:///cursors/default_cursor.png</property>
    <property name="hotspot-x">5</property>
    <property name="hotspot-y">5</property>
  </object>
@@ -13,7 +13,7 @@
    <property name="fallback">default_cursor_image</property>
  </object>
  <object class="GdkCursor" id="default_cursor_image_fallback">
-    <property name="texture">resource:///cursors/images/default_cursor.png</property>
+    <property name="texture">resource:///cursors/default_cursor.png</property>
    <property name="hotspot-x">5</property>
    <property name="hotspot-y">5</property>
    <property name="fallback">default_cursor</property>
@@ -22,21 +22,21 @@
    <property name="name">none</property>
  </object>
  <object class="GdkCursor" id="none_cursor_image">
-    <property name="texture">resource:///cursors/images/none_cursor.png</property>
+    <property name="texture">resource:///cursors/none_cursor.png</property>
  </object>
  <object class="GdkCursor" id="none_cursor_fallback">
    <property name="name">none</property>
    <property name="fallback">none_cursor_image</property>
  </object>
  <object class="GdkCursor" id="none_cursor_image_fallback">
-    <property name="texture">resource:///cursors/images/none_cursor.png</property>
+    <property name="texture">resource:///cursors/none_cursor.png</property>
    <property name="fallback">none_cursor</property>
  </object>
  <object class="GdkCursor" id="gtk-logo_cursor">
    <property name="name">gtk-logo</property>
  </object>
  <object class="GdkCursor" id="gtk-logo_cursor_image">
-    <property name="texture">resource:///cursors/images/gtk_logo_cursor.png</property>
+    <property name="texture">resource:///cursors/gtk_logo_cursor.png</property>
    <property name="hotspot-x">18</property>
    <property name="hotspot-y">2</property>
  </object>
@@ -45,7 +45,7 @@
    <property name="fallback">gtk-logo_cursor_image</property>
  </object>
  <object class="GdkCursor" id="gtk-logo_cursor_image_fallback">
-    <property name="texture">resource:///cursors/images/gtk_logo_cursor.png</property>
+    <property name="texture">resource:///cursors/gtk_logo_cursor.png</property>
    <property name="hotspot-x">18</property>
    <property name="hotspot-y">2</property>
    <property name="fallback">gtk-logo_cursor</property>
@@ -54,7 +54,7 @@
    <property name="name">context-menu</property>
  </object>
  <object class="GdkCursor" id="context-menu_cursor_image">
-    <property name="texture">resource:///cursors/images/context_menu_cursor.png</property>
+    <property name="texture">resource:///cursors/context_menu_cursor.png</property>
    <property name="hotspot-x">5</property>
    <property name="hotspot-y">5</property>
  </object>
@@ -63,7 +63,7 @@
    <property name="fallback">context-menu_cursor_image</property>
  </object>
  <object class="GdkCursor" id="context-menu_cursor_image_fallback">
-    <property name="texture">resource:///cursors/images/context_menu_cursor.png</property>
+    <property name="texture">resource:///cursors/context_menu_cursor.png</property>
    <property name="hotspot-x">5</property>
    <property name="hotspot-y">5</property>
    <property name="fallback">context-menu_cursor</property>
@@ -72,7 +72,7 @@
    <property name="name">help</property>
  </object>
  <object class="GdkCursor" id="help_cursor_image">
-    <property name="texture">resource:///cursors/images/help_cursor.png</property>
+    <property name="texture">resource:///cursors/help_cursor.png</property>
    <property name="hotspot-x">16</property>
    <property name="hotspot-y">27</property>
  </object>
@@ -81,7 +81,7 @@
    <property name="fallback">help_cursor_image</property>
  </object>
  <object class="GdkCursor" id="help_cursor_image_fallback">
-    <property name="texture">resource:///cursors/images/help_cursor.png</property>
+    <property name="texture">resource:///cursors/help_cursor.png</property>
    <property name="hotspot-x">16</property>
    <property name="hotspot-y">27</property>
    <property name="fallback">help_cursor</property>
@@ -90,7 +90,7 @@
    <property name="name">pointer</property>
  </object>
  <object class="GdkCursor" id="pointer_cursor_image">
-    <property name="texture">resource:///cursors/images/pointer_cursor.png</property>
+    <property name="texture">resource:///cursors/pointer_cursor.png</property>
    <property name="hotspot-x">14</property>
    <property name="hotspot-y">9</property>
  </object>
@@ -99,7 +99,7 @@
    <property name="fallback">pointer_cursor_image</property>
  </object>
  <object class="GdkCursor" id="pointer_cursor_image_fallback">
-    <property name="texture">resource:///cursors/images/pointer_cursor.png</property>
+    <property name="texture">resource:///cursors/pointer_cursor.png</property>
    <property name="hotspot-x">14</property>
    <property name="hotspot-y">9</property>
    <property name="fallback">pointer_cursor</property>
@@ -108,7 +108,7 @@
    <property name="name">progress</property>
  </object>
  <object class="GdkCursor" id="progress_cursor_image">
-    <property name="texture">resource:///cursors/images/progress_cursor.png</property>
+    <property name="texture">resource:///cursors/progress_cursor.png</property>
    <property name="hotspot-x">5</property>
    <property name="hotspot-y">4</property>
  </object>
@@ -117,7 +117,7 @@
    <property name="fallback">progress_cursor_image</property>
  </object>
  <object class="GdkCursor" id="progress_cursor_image_fallback">
-    <property name="texture">resource:///cursors/images/progress_cursor.png</property>
+    <property name="texture">resource:///cursors/progress_cursor.png</property>
    <property name="hotspot-x">5</property>
    <property name="hotspot-y">4</property>
    <property name="fallback">progress_cursor</property>
@@ -126,7 +126,7 @@
    <property name="name">wait</property>
  </object>
  <object class="GdkCursor" id="wait_cursor_image">
-    <property name="texture">resource:///cursors/images/wait_cursor.png</property>
+    <property name="texture">resource:///cursors/wait_cursor.png</property>
    <property name="hotspot-x">11</property>
    <property name="hotspot-y">11</property>
  </object>
@@ -135,7 +135,7 @@
    <property name="fallback">wait_cursor_image</property>
  </object>
  <object class="GdkCursor" id="wait_cursor_image_fallback">
-    <property name="texture">resource:///cursors/images/wait_cursor.png</property>
+    <property name="texture">resource:///cursors/wait_cursor.png</property>
    <property name="hotspot-x">11</property>
    <property name="hotspot-y">11</property>
    <property name="fallback">wait_cursor</property>
@@ -144,7 +144,7 @@
    <property name="name">cell</property>
  </object>
  <object class="GdkCursor" id="cell_cursor_image">
-    <property name="texture">resource:///cursors/images/cell_cursor.png</property>
+    <property name="texture">resource:///cursors/cell_cursor.png</property>
    <property name="hotspot-x">15</property>
    <property name="hotspot-y">15</property>
  </object>
@@ -153,7 +153,7 @@
    <property name="fallback">cell_cursor_image</property>
  </object>
  <object class="GdkCursor" id="cell_cursor_image_fallback">
-    <property name="texture">resource:///cursors/images/cell_cursor.png</property>
+    <property name="texture">resource:///cursors/cell_cursor.png</property>
    <property name="hotspot-x">15</property>
    <property name="hotspot-y">15</property>
    <property name="fallback">cell_cursor</property>
@@ -162,7 +162,7 @@
    <property name="name">crosshair</property>
  </object>
  <object class="GdkCursor" id="crosshair_cursor_image">
-    <property name="texture">resource:///cursors/images/crosshair_cursor.png</property>
+    <property name="texture">resource:///cursors/crosshair_cursor.png</property>
    <property name="hotspot-x">15</property>
    <property name="hotspot-y">15</property>
  </object>
@@ -171,7 +171,7 @@
    <property name="fallback">crosshair_cursor_image</property>
  </object>
  <object class="GdkCursor" id="crosshair_cursor_image_fallback">
-    <property name="texture">resource:///cursors/images/crosshair_cursor.png</property>
+    <property name="texture">resource:///cursors/crosshair_cursor.png</property>
    <property name="hotspot-x">15</property>
    <property name="hotspot-y">15</property>
    <property name="fallback">crosshair_cursor</property>
@@ -180,7 +180,7 @@
    <property name="name">text</property>
  </object>
  <object class="GdkCursor" id="text_cursor_image">
-    <property name="texture">resource:///cursors/images/text_cursor.png</property>
+    <property name="texture">resource:///cursors/text_cursor.png</property>
    <property name="hotspot-x">14</property>
    <property name="hotspot-y">15</property>
  </object>
@@ -189,7 +189,7 @@
    <property name="fallback">text_cursor_image</property>
  </object>
  <object class="GdkCursor" id="text_cursor_image_fallback">
-    <property name="texture">resource:///cursors/images/text_cursor.png</property>
+    <property name="texture">resource:///cursors/text_cursor.png</property>
    <property name="hotspot-x">14</property>
    <property name="hotspot-y">15</property>
    <property name="fallback">text_cursor</property>
@@ -198,7 +198,7 @@
    <property name="name">vertical-text</property>
  </object>
  <object class="GdkCursor" id="vertical-text_cursor_image">
-    <property name="texture">resource:///cursors/images/vertical_text_cursor.png</property>
+    <property name="texture">resource:///cursors/vertical_text_cursor.png</property>
    <property name="hotspot-x">16</property>
    <property name="hotspot-y">15</property>
  </object>
@@ -207,7 +207,7 @@
    <property name="fallback">vertical-text_cursor_image</property>
  </object>
  <object class="GdkCursor" id="vertical-text_cursor_image_fallback">
-    <property name="texture">resource:///cursors/images/vertical_text_cursor.png</property>
+    <property name="texture">resource:///cursors/vertical_text_cursor.png</property>
    <property name="hotspot-x">16</property>
    <property name="hotspot-y">15</property>
    <property name="fallback">vertical-text_cursor</property>
@@ -216,7 +216,7 @@
    <property name="name">alias</property>
  </object>
  <object class="GdkCursor" id="alias_cursor_image">
-    <property name="texture">resource:///cursors/images/alias_cursor.png</property>
+    <property name="texture">resource:///cursors/alias_cursor.png</property>
    <property name="hotspot-x">12</property>
    <property name="hotspot-y">11</property>
  </object>
@@ -225,7 +225,7 @@
    <property name="fallback">alias_cursor_image</property>
  </object>
  <object class="GdkCursor" id="alias_cursor_image_fallback">
-    <property name="texture">resource:///cursors/images/alias_cursor.png</property>
+    <property name="texture">resource:///cursors/alias_cursor.png</property>
    <property name="hotspot-x">12</property>
    <property name="hotspot-y">11</property>
    <property name="fallback">alias_cursor</property>
@@ -234,7 +234,7 @@
    <property name="name">copy</property>
  </object>
  <object class="GdkCursor" id="copy_cursor_image">
-    <property name="texture">resource:///cursors/images/copy_cursor.png</property>
+    <property name="texture">resource:///cursors/copy_cursor.png</property>
    <property name="hotspot-x">12</property>
    <property name="hotspot-y">11</property>
  </object>
@@ -243,7 +243,7 @@
    <property name="fallback">copy_cursor_image</property>
  </object>
  <object class="GdkCursor" id="copy_cursor_image_fallback">
-    <property name="texture">resource:///cursors/images/copy_cursor.png</property>
+    <property name="texture">resource:///cursors/copy_cursor.png</property>
    <property name="hotspot-x">12</property>
    <property name="hotspot-y">11</property>
    <property name="fallback">copy_cursor</property>
@@ -252,7 +252,7 @@
    <property name="name">move</property>
  </object>
  <object class="GdkCursor" id="move_cursor_image">
-    <property name="texture">resource:///cursors/images/move_cursor.png</property>
+    <property name="texture">resource:///cursors/move_cursor.png</property>
    <property name="hotspot-x">12</property>
    <property name="hotspot-y">11</property>
  </object>
@@ -261,7 +261,7 @@
    <property name="fallback">move_cursor_image</property>
  </object>
  <object class="GdkCursor" id="move_cursor_image_fallback">
-    <property name="texture">resource:///cursors/images/move_cursor.png</property>
+    <property name="texture">resource:///cursors/move_cursor.png</property>
    <property name="hotspot-x">12</property>
    <property name="hotspot-y">11</property>
    <property name="fallback">move_cursor</property>
@@ -270,7 +270,7 @@
    <property name="name">no-drop</property>
  </object>
  <object class="GdkCursor" id="no-drop_cursor_image">
-    <property name="texture">resource:///cursors/images/no_drop_cursor.png</property>
+    <property name="texture">resource:///cursors/no_drop_cursor.png</property>
    <property name="hotspot-x">12</property>
    <property name="hotspot-y">11</property>
  </object>
@@ -279,7 +279,7 @@
    <property name="fallback">no-drop_cursor_image</property>
  </object>
  <object class="GdkCursor" id="no-drop_cursor_image_fallback">
-    <property name="texture">resource:///cursors/images/no_drop_cursor.png</property>
+    <property name="texture">resource:///cursors/no_drop_cursor.png</property>
    <property name="hotspot-x">12</property>
    <property name="hotspot-y">11</property>
    <property name="fallback">no-drop_cursor</property>
@@ -288,7 +288,7 @@
    <property name="name">not-allowed</property>
  </object>
  <object class="GdkCursor" id="not-allowed_cursor_image">
-    <property name="texture">resource:///cursors/images/not_allowed_cursor.png</property>
+    <property name="texture">resource:///cursors/not_allowed_cursor.png</property>
    <property name="hotspot-x">12</property>
    <property name="hotspot-y">11</property>
  </object>
@@ -297,7 +297,7 @@
    <property name="fallback">not-allowed_cursor_image</property>
  </object>
  <object class="GdkCursor" id="not-allowed_cursor_image_fallback">
-    <property name="texture">resource:///cursors/images/not_allowed_cursor.png</property>
+    <property name="texture">resource:///cursors/not_allowed_cursor.png</property>
    <property name="hotspot-x">12</property>
    <property name="hotspot-y">11</property>
    <property name="fallback">not-allowed_cursor</property>
@@ -306,7 +306,7 @@
    <property name="name">grab</property>
  </object>
  <object class="GdkCursor" id="grab_cursor_image">
-    <property name="texture">resource:///cursors/images/grab_cursor.png</property>
+    <property name="texture">resource:///cursors/grab_cursor.png</property>
    <property name="hotspot-x">10</property>
    <property name="hotspot-y">6</property>
  </object>
@@ -315,7 +315,7 @@
    <property name="fallback">grab_cursor_image</property>
  </object>
  <object class="GdkCursor" id="grab_cursor_image_fallback">
-    <property name="texture">resource:///cursors/images/grab_cursor.png</property>
+    <property name="texture">resource:///cursors/grab_cursor.png</property>
    <property name="hotspot-x">10</property>
    <property name="hotspot-y">6</property>
    <property name="fallback">grab_cursor</property>
@@ -324,7 +324,7 @@
    <property name="name">grabbing</property>
  </object>
  <object class="GdkCursor" id="grabbing_cursor_image">
-    <property name="texture">resource:///cursors/images/grabbing_cursor.png</property>
+    <property name="texture">resource:///cursors/grabbing_cursor.png</property>
    <property name="hotspot-x">15</property>
    <property name="hotspot-y">14</property>
  </object>
@@ -333,7 +333,7 @@
    <property name="fallback">grabbing_cursor_image</property>
  </object>
  <object class="GdkCursor" id="grabbing_cursor_image_fallback">
-    <property name="texture">resource:///cursors/images/grabbing_cursor.png</property>
+    <property name="texture">resource:///cursors/grabbing_cursor.png</property>
    <property name="hotspot-x">15</property>
    <property name="hotspot-y">14</property>
    <property name="fallback">grabbing_cursor</property>
@@ -342,7 +342,7 @@
    <property name="name">all-scroll</property>
  </object>
  <object class="GdkCursor" id="all-scroll_cursor_image">
-    <property name="texture">resource:///cursors/images/all_scroll_cursor.png</property>
+    <property name="texture">resource:///cursors/all_scroll_cursor.png</property>
    <property name="hotspot-x">15</property>
    <property name="hotspot-y">15</property>
  </object>
@@ -351,7 +351,7 @@
    <property name="fallback">all-scroll_cursor_image</property>
  </object>
  <object class="GdkCursor" id="all-scroll_cursor_image_fallback">
-    <property name="texture">resource:///cursors/images/all_scroll_cursor.png</property>
+    <property name="texture">resource:///cursors/all_scroll_cursor.png</property>
    <property name="hotspot-x">15</property>
    <property name="hotspot-y">15</property>
    <property name="fallback">all-scroll_cursor</property>
@@ -360,7 +360,7 @@
    <property name="name">col-resize</property>
  </object>
  <object class="GdkCursor" id="col-resize_cursor_image">
-    <property name="texture">resource:///cursors/images/col_resize_cursor.png</property>
+    <property name="texture">resource:///cursors/col_resize_cursor.png</property>
    <property name="hotspot-x">16</property>
    <property name="hotspot-y">15</property>
  </object>
@@ -369,7 +369,7 @@
    <property name="fallback">col-resize_cursor_image</property>
  </object>
  <object class="GdkCursor" id="col-resize_cursor_image_fallback">
-    <property name="texture">resource:///cursors/images/col_resize_cursor.png</property>
+    <property name="texture">resource:///cursors/col_resize_cursor.png</property>
    <property name="hotspot-x">16</property>
    <property name="hotspot-y">15</property>
    <property name="fallback">col-resize_cursor</property>
@@ -378,7 +378,7 @@
    <property name="name">row-resize</property>
  </object>
  <object class="GdkCursor" id="row-resize_cursor_image">
-    <property name="texture">resource:///cursors/images/row_resize_cursor.png</property>
+    <property name="texture">resource:///cursors/row_resize_cursor.png</property>
    <property name="hotspot-x">15</property>
    <property name="hotspot-y">17</property>
  </object>
@@ -387,7 +387,7 @@
    <property name="fallback">row-resize_cursor_image</property>
  </object>
  <object class="GdkCursor" id="row-resize_cursor_image_fallback">
-    <property name="texture">resource:///cursors/images/row_resize_cursor.png</property>
+    <property name="texture">resource:///cursors/row_resize_cursor.png</property>
    <property name="hotspot-x">15</property>
    <property name="hotspot-y">17</property>
    <property name="fallback">row-resize_cursor</property>
@@ -396,7 +396,7 @@
    <property name="name">n-resize</property>
  </object>
  <object class="GdkCursor" id="n-resize_cursor_image">
-    <property name="texture">resource:///cursors/images/n_resize_cursor.png</property>
+    <property name="texture">resource:///cursors/n_resize_cursor.png</property>
    <property name="hotspot-x">17</property>
    <property name="hotspot-y">7</property>
  </object>
@@ -405,7 +405,7 @@
    <property name="fallback">n-resize_cursor_image</property>
  </object>
  <object class="GdkCursor" id="n-resize_cursor_image_fallback">
-    <property name="texture">resource:///cursors/images/n_resize_cursor.png</property>
+    <property name="texture">resource:///cursors/n_resize_cursor.png</property>
    <property name="hotspot-x">17</property>
    <property name="hotspot-y">7</property>
    <property name="fallback">n-resize_cursor</property>
@@ -414,7 +414,7 @@
    <property name="name">e-resize</property>
  </object>
  <object class="GdkCursor" id="e-resize_cursor_image">
-    <property name="texture">resource:///cursors/images/e_resize_cursor.png</property>
+    <property name="texture">resource:///cursors/e_resize_cursor.png</property>
    <property name="hotspot-x">25</property>
    <property name="hotspot-y">17</property>
  </object>
@@ -423,7 +423,7 @@
    <property name="fallback">e-resize_cursor_image</property>
  </object>
  <object class="GdkCursor" id="e-resize_cursor_image_fallback">
-    <property name="texture">resource:///cursors/images/e_resize_cursor.png</property>
+    <property name="texture">resource:///cursors/e_resize_cursor.png</property>
    <property name="hotspot-x">25</property>
    <property name="hotspot-y">17</property>
    <property name="fallback">e-resize_cursor</property>
@@ -432,7 +432,7 @@
    <property name="name">s-resize</property>
  </object>
  <object class="GdkCursor" id="s-resize_cursor_image">
-    <property name="texture">resource:///cursors/images/s_resize_cursor.png</property>
+    <property name="texture">resource:///cursors/s_resize_cursor.png</property>
    <property name="hotspot-x">17</property>
    <property name="hotspot-y">23</property>
  </object>
@@ -441,7 +441,7 @@
    <property name="fallback">s-resize_cursor_image</property>
  </object>
  <object class="GdkCursor" id="s-resize_cursor_image_fallback">
-    <property name="texture">resource:///cursors/images/s_resize_cursor.png</property>
+    <property name="texture">resource:///cursors/s_resize_cursor.png</property>
    <property name="hotspot-x">17</property>
    <property name="hotspot-y">23</property>
    <property name="fallback">s-resize_cursor</property>
@@ -450,7 +450,7 @@
    <property name="name">w-resize</property>
  </object>
  <object class="GdkCursor" id="w-resize_cursor_image">
-    <property name="texture">resource:///cursors/images/w_resize_cursor.png</property>
+    <property name="texture">resource:///cursors/w_resize_cursor.png</property>
    <property name="hotspot-x">8</property>
    <property name="hotspot-y">17</property>
  </object>
@@ -459,7 +459,7 @@
    <property name="fallback">w-resize_cursor_image</property>
  </object>
  <object class="GdkCursor" id="w-resize_cursor_image_fallback">
-    <property name="texture">resource:///cursors/images/w_resize_cursor.png</property>
+    <property name="texture">resource:///cursors/w_resize_cursor.png</property>
    <property name="hotspot-x">8</property>
    <property name="hotspot-y">17</property>
    <property name="fallback">w-resize_cursor</property>
@@ -468,7 +468,7 @@
    <property name="name">ne-resize</property>
  </object>
  <object class="GdkCursor" id="ne-resize_cursor_image">
-    <property name="texture">resource:///cursors/images/ne_resize_cursor.png</property>
+    <property name="texture">resource:///cursors/ne_resize_cursor.png</property>
    <property name="hotspot-x">20</property>
    <property name="hotspot-y">13</property>
  </object>
@@ -477,7 +477,7 @@
    <property name="fallback">ne-resize_cursor_image</property>
  </object>
  <object class="GdkCursor" id="ne-resize_cursor_image_fallback">
-    <property name="texture">resource:///cursors/images/ne_resize_cursor.png</property>
+    <property name="texture">resource:///cursors/ne_resize_cursor.png</property>
    <property name="hotspot-x">20</property>
    <property name="hotspot-y">13</property>
    <property name="fallback">ne-resize_cursor</property>
@@ -486,7 +486,7 @@
    <property name="name">nw-resize</property>
  </object>
  <object class="GdkCursor" id="nw-resize_cursor_image">
-    <property name="texture">resource:///cursors/images/nw_resize_cursor.png</property>
+    <property name="texture">resource:///cursors/nw_resize_cursor.png</property>
    <property name="hotspot-x">13</property>
    <property name="hotspot-y">13</property>
  </object>
@@ -495,7 +495,7 @@
    <property name="fallback">nw-resize_cursor_image</property>
  </object>
  <object class="GdkCursor" id="nw-resize_cursor_image_fallback">
-    <property name="texture">resource:///cursors/images/nw_resize_cursor.png</property>
+    <property name="texture">resource:///cursors/nw_resize_cursor.png</property>
    <property name="hotspot-x">13</property>
    <property name="hotspot-y">13</property>
    <property name="fallback">nw-resize_cursor</property>
@@ -504,7 +504,7 @@
    <property name="name">se-resize</property>
  </object>
  <object class="GdkCursor" id="se-resize_cursor_image">
-    <property name="texture">resource:///cursors/images/se_resize_cursor.png</property>
+    <property name="texture">resource:///cursors/se_resize_cursor.png</property>
    <property name="hotspot-x">19</property>
    <property name="hotspot-y">19</property>
  </object>
@@ -513,7 +513,7 @@
    <property name="fallback">se-resize_cursor_image</property>
  </object>
  <object class="GdkCursor" id="se-resize_cursor_image_fallback">
-    <property name="texture">resource:///cursors/images/se_resize_cursor.png</property>
+    <property name="texture">resource:///cursors/se_resize_cursor.png</property>
    <property name="hotspot-x">19</property>
    <property name="hotspot-y">19</property>
    <property name="fallback">se-resize_cursor</property>
@@ -522,7 +522,7 @@
    <property name="name">sw-resize</property>
  </object>
  <object class="GdkCursor" id="sw-resize_cursor_image">
-    <property name="texture">resource:///cursors/images/sw_resize_cursor.png</property>
+    <property name="texture">resource:///cursors/sw_resize_cursor.png</property>
    <property name="hotspot-x">13</property>
    <property name="hotspot-y">19</property>
  </object>
@@ -531,7 +531,7 @@
    <property name="fallback">sw-resize_cursor_image</property>
  </object>
  <object class="GdkCursor" id="sw-resize_cursor_image_fallback">
-    <property name="texture">resource:///cursors/images/sw_resize_cursor.png</property>
+    <property name="texture">resource:///cursors/sw_resize_cursor.png</property>
    <property name="hotspot-x">13</property>
    <property name="hotspot-y">19</property>
    <property name="fallback">sw-resize_cursor</property>
@@ -540,7 +540,7 @@
    <property name="name">ew-resize</property>
  </object>
  <object class="GdkCursor" id="ew-resize_cursor_image">
-    <property name="texture">resource:///cursors/images/ew_resize_cursor.png</property>
+    <property name="texture">resource:///cursors/ew_resize_cursor.png</property>
    <property name="hotspot-x">16</property>
    <property name="hotspot-y">15</property>
  </object>
@@ -549,7 +549,7 @@
    <property name="fallback">ew-resize_cursor_image</property>
  </object>
  <object class="GdkCursor" id="ew-resize_cursor_image_fallback">
-    <property name="texture">resource:///cursors/images/ew_resize_cursor.png</property>
+    <property name="texture">resource:///cursors/ew_resize_cursor.png</property>
    <property name="hotspot-x">16</property>
    <property name="hotspot-y">15</property>
    <property name="fallback">ew-resize_cursor</property>
@@ -558,7 +558,7 @@
    <property name="name">ns-resize</property>
  </object>
  <object class="GdkCursor" id="ns-resize_cursor_image">
-    <property name="texture">resource:///cursors/images/ns_resize_cursor.png</property>
+    <property name="texture">resource:///cursors/ns_resize_cursor.png</property>
    <property name="hotspot-x">15</property>
    <property name="hotspot-y">17</property>
  </object>
@@ -567,7 +567,7 @@
    <property name="fallback">ns-resize_cursor_image</property>
  </object>
  <object class="GdkCursor" id="ns-resize_cursor_image_fallback">
-    <property name="texture">resource:///cursors/images/ns_resize_cursor.png</property>
+    <property name="texture">resource:///cursors/ns_resize_cursor.png</property>
    <property name="hotspot-x">15</property>
    <property name="hotspot-y">17</property>
    <property name="fallback">ns-resize_cursor</property>
@@ -576,7 +576,7 @@
    <property name="name">nesw-resize</property>
  </object>
  <object class="GdkCursor" id="nesw-resize_cursor_image">
-    <property name="texture">resource:///cursors/images/nesw_resize_cursor.png</property>
+    <property name="texture">resource:///cursors/nesw_resize_cursor.png</property>
    <property name="hotspot-x">14</property>
    <property name="hotspot-y">14</property>
  </object>
@@ -585,7 +585,7 @@
    <property name="fallback">nesw-resize_cursor_image</property>
  </object>
  <object class="GdkCursor" id="nesw-resize_cursor_image_fallback">
-    <property name="texture">resource:///cursors/images/nesw_resize_cursor.png</property>
+    <property name="texture">resource:///cursors/nesw_resize_cursor.png</property>
    <property name="hotspot-x">14</property>
    <property name="hotspot-y">14</property>
    <property name="fallback">nesw-resize_cursor</property>
@@ -594,7 +594,7 @@
    <property name="name">nwse-resize</property>
  </object>
  <object class="GdkCursor" id="nwse-resize_cursor_image">
-    <property name="texture">resource:///cursors/images/nwse_resize_cursor.png</property>
+    <property name="texture">resource:///cursors/nwse_resize_cursor.png</property>
    <property name="hotspot-x">14</property>
    <property name="hotspot-y">14</property>
  </object>
@@ -603,7 +603,7 @@
    <property name="fallback">nwse-resize_cursor_image</property>
  </object>
  <object class="GdkCursor" id="nwse-resize_cursor_image_fallback">
-    <property name="texture">resource:///cursors/images/nwse_resize_cursor.png</property>
+    <property name="texture">resource:///cursors/nwse_resize_cursor.png</property>
    <property name="hotspot-x">14</property>
    <property name="hotspot-y">14</property>
    <property name="fallback">nwse-resize_cursor</property>
@@ -612,7 +612,7 @@
    <property name="name">zoom-in</property>
  </object>
  <object class="GdkCursor" id="zoom-in_cursor_image">
-    <property name="texture">resource:///cursors/images/zoom_in_cursor.png</property>
+    <property name="texture">resource:///cursors/zoom_in_cursor.png</property>
    <property name="hotspot-x">14</property>
    <property name="hotspot-y">13</property>
  </object>
@@ -621,7 +621,7 @@
    <property name="fallback">zoom-in_cursor_image</property>
  </object>
  <object class="GdkCursor" id="zoom-in_cursor_image_fallback">
-    <property name="texture">resource:///cursors/images/zoom_in_cursor.png</property>
+    <property name="texture">resource:///cursors/zoom_in_cursor.png</property>
    <property name="hotspot-x">14</property>
    <property name="hotspot-y">13</property>
    <property name="fallback">zoom-in_cursor</property>
@@ -630,7 +630,7 @@
    <property name="name">zoom-out</property>
  </object>
  <object class="GdkCursor" id="zoom-out_cursor_image">
-    <property name="texture">resource:///cursors/images/zoom_out_cursor.png</property>
+    <property name="texture">resource:///cursors/zoom_out_cursor.png</property>
    <property name="hotspot-x">14</property>
    <property name="hotspot-y">13</property>
  </object>
@@ -639,7 +639,7 @@
    <property name="fallback">zoom-out_cursor_image</property>
  </object>
  <object class="GdkCursor" id="zoom-out_cursor_image_fallback">
-    <property name="texture">resource:///cursors/images/zoom_out_cursor.png</property>
+    <property name="texture">resource:///cursors/zoom_out_cursor.png</property>
    <property name="hotspot-x">14</property>
    <property name="hotspot-y">13</property>
    <property name="fallback">zoom-out_cursor</property>
@@ -682,7 +682,7 @@
                            <property name="spacing">10</property>
                            <child>
                              <object class="GtkImage">
-                                <property name="paintable">resource:///cursors/images/default_cursor.png</property>
+                                <property name="paintable">resource:///cursors/default_cursor.png</property>
                              </object>
                            </child>
                            <child>
@@ -742,7 +742,7 @@
                            <property name="spacing">10</property>
                            <child>
                              <object class="GtkImage">
-                                <property name="paintable">resource:///cursors/images/none_cursor.png</property>
+                                <property name="paintable">resource:///cursors/none_cursor.png</property>
                              </object>
                            </child>
                            <child>
@@ -802,7 +802,7 @@
                            <property name="spacing">10</property>
                            <child>
                              <object class="GtkImage">
-                                <property name="paintable">resource:///cursors/images/gtk_logo_cursor.png</property>
+                                <property name="paintable">resource:///cursors/gtk_logo_cursor.png</property>
                              </object>
                            </child>
                            <child>
@@ -875,7 +875,7 @@
                            <property name="spacing">10</property>
                            <child>
                              <object class="GtkImage">
-                                <property name="paintable">resource:///cursors/images/context_menu_cursor.png</property>
+                                <property name="paintable">resource:///cursors/context_menu_cursor.png</property>
                              </object>
                            </child>
                            <child>
@@ -935,7 +935,7 @@
                            <property name="spacing">10</property>
                            <child>
                              <object class="GtkImage">
-                                <property name="paintable">resource:///cursors/images/help_cursor.png</property>
+                                <property name="paintable">resource:///cursors/help_cursor.png</property>
                              </object>
                            </child>
                            <child>
@@ -995,7 +995,7 @@
                            <property name="spacing">10</property>
                            <child>
                              <object class="GtkImage">
-                                <property name="paintable">resource:///cursors/images/pointer_cursor.png</property>
+                                <property name="paintable">resource:///cursors/pointer_cursor.png</property>
                              </object>
                            </child>
                            <child>
@@ -1055,7 +1055,7 @@
                            <property name="spacing">10</property>
                            <child>
                              <object class="GtkImage">
-                                <property name="paintable">resource:///cursors/images/progress_cursor.png</property>
+                                <property name="paintable">resource:///cursors/progress_cursor.png</property>
                              </object>
                            </child>
                            <child>
@@ -1115,7 +1115,7 @@
                            <property name="spacing">10</property>
                            <child>
                              <object class="GtkImage">
-                                <property name="paintable">resource:///cursors/images/wait_cursor.png</property>
+                                <property name="paintable">resource:///cursors/wait_cursor.png</property>
                              </object>
                            </child>
                            <child>
@@ -1188,7 +1188,7 @@
                            <property name="spacing">10</property>
                            <child>
                              <object class="GtkImage">
-                                <property name="paintable">resource:///cursors/images/cell_cursor.png</property>
+                                <property name="paintable">resource:///cursors/cell_cursor.png</property>
                              </object>
                            </child>
                            <child>
@@ -1248,7 +1248,7 @@
                            <property name="spacing">10</property>
                            <child>
                              <object class="GtkImage">
-                                <property name="paintable">resource:///cursors/images/crosshair_cursor.png</property>
+                                <property name="paintable">resource:///cursors/crosshair_cursor.png</property>
                              </object>
                            </child>
                            <child>
@@ -1308,7 +1308,7 @@
                            <property name="spacing">10</property>
                            <child>
                              <object class="GtkImage">
-                                <property name="paintable">resource:///cursors/images/text_cursor.png</property>
+                                <property name="paintable">resource:///cursors/text_cursor.png</property>
                              </object>
                            </child>
                            <child>
@@ -1368,7 +1368,7 @@
                            <property name="spacing">10</property>
                            <child>
                              <object class="GtkImage">
-                                <property name="paintable">resource:///cursors/images/vertical_text_cursor.png</property>
+                                <property name="paintable">resource:///cursors/vertical_text_cursor.png</property>
                              </object>
                            </child>
                            <child>
@@ -1441,7 +1441,7 @@
                            <property name="spacing">10</property>
                            <child>
                              <object class="GtkImage">
-                                <property name="paintable">resource:///cursors/images/alias_cursor.png</property>
+                                <property name="paintable">resource:///cursors/alias_cursor.png</property>
                              </object>
                            </child>
                            <child>
@@ -1501,7 +1501,7 @@
                            <property name="spacing">10</property>
                            <child>
                              <object class="GtkImage">
-                                <property name="paintable">resource:///cursors/images/copy_cursor.png</property>
+                                <property name="paintable">resource:///cursors/copy_cursor.png</property>
                              </object>
                            </child>
                            <child>
@@ -1561,7 +1561,7 @@
                            <property name="spacing">10</property>
                            <child>
                              <object class="GtkImage">
-                                <property name="paintable">resource:///cursors/images/move_cursor.png</property>
+                                <property name="paintable">resource:///cursors/move_cursor.png</property>
                              </object>
                            </child>
                            <child>
@@ -1621,7 +1621,7 @@
                            <property name="spacing">10</property>
                            <child>
                              <object class="GtkImage">
-                                <property name="paintable">resource:///cursors/images/no_drop_cursor.png</property>
+                                <property name="paintable">resource:///cursors/no_drop_cursor.png</property>
                              </object>
                            </child>
                            <child>
@@ -1681,7 +1681,7 @@
                            <property name="spacing">10</property>
                            <child>
                              <object class="GtkImage">
-                                <property name="paintable">resource:///cursors/images/not_allowed_cursor.png</property>
+                                <property name="paintable">resource:///cursors/not_allowed_cursor.png</property>
                              </object>
                            </child>
                            <child>
@@ -1741,7 +1741,7 @@
                            <property name="spacing">10</property>
                            <child>
                              <object class="GtkImage">
-                                <property name="paintable">resource:///cursors/images/grab_cursor.png</property>
+                                <property name="paintable">resource:///cursors/grab_cursor.png</property>
                              </object>
                            </child>
                            <child>
@@ -1801,7 +1801,7 @@
                            <property name="spacing">10</property>
                            <child>
                              <object class="GtkImage">
-                                <property name="paintable">resource:///cursors/images/grabbing_cursor.png</property>
+                                <property name="paintable">resource:///cursors/grabbing_cursor.png</property>
                              </object>
                            </child>
                            <child>
@@ -1874,7 +1874,7 @@
                            <property name="spacing">10</property>
                            <child>
                              <object class="GtkImage">
-                                <property name="paintable">resource:///cursors/images/all_scroll_cursor.png</property>
+                                <property name="paintable">resource:///cursors/all_scroll_cursor.png</property>
                              </object>
                            </child>
                            <child>
@@ -1934,7 +1934,7 @@
                            <property name="spacing">10</property>
                            <child>
                              <object class="GtkImage">
-                                <property name="paintable">resource:///cursors/images/col_resize_cursor.png</property>
+                                <property name="paintable">resource:///cursors/col_resize_cursor.png</property>
                              </object>
                            </child>
                            <child>
@@ -1994,7 +1994,7 @@
                            <property name="spacing">10</property>
                            <child>
                              <object class="GtkImage">
-                                <property name="paintable">resource:///cursors/images/row_resize_cursor.png</property>
+                                <property name="paintable">resource:///cursors/row_resize_cursor.png</property>
                              </object>
                            </child>
                            <child>
@@ -2054,7 +2054,7 @@
                            <property name="spacing">10</property>
                            <child>
                              <object class="GtkImage">
-                                <property name="paintable">resource:///cursors/images/n_resize_cursor.png</property>
+                                <property name="paintable">resource:///cursors/n_resize_cursor.png</property>
                              </object>
                            </child>
                            <child>
@@ -2114,7 +2114,7 @@
                            <property name="spacing">10</property>
                            <child>
                              <object class="GtkImage">
-                                <property name="paintable">resource:///cursors/images/e_resize_cursor.png</property>
+                                <property name="paintable">resource:///cursors/e_resize_cursor.png</property>
                              </object>
                            </child>
                            <child>
@@ -2174,7 +2174,7 @@
                            <property name="spacing">10</property>
                            <child>
                              <object class="GtkImage">
-                                <property name="paintable">resource:///cursors/images/s_resize_cursor.png</property>
+                                <property name="paintable">resource:///cursors/s_resize_cursor.png</property>
                              </object>
                            </child>
                            <child>
@@ -2234,7 +2234,7 @@
                            <property name="spacing">10</property>
                            <child>
                              <object class="GtkImage">
-                                <property name="paintable">resource:///cursors/images/w_resize_cursor.png</property>
+                                <property name="paintable">resource:///cursors/w_resize_cursor.png</property>
                              </object>
                            </child>
                            <child>
@@ -2294,7 +2294,7 @@
                            <property name="spacing">10</property>
                            <child>
                              <object class="GtkImage">
-                                <property name="paintable">resource:///cursors/images/ne_resize_cursor.png</property>
+                                <property name="paintable">resource:///cursors/ne_resize_cursor.png</property>
                              </object>
                            </child>
                            <child>
@@ -2354,7 +2354,7 @@
                            <property name="spacing">10</property>
                            <child>
                              <object class="GtkImage">
-                                <property name="paintable">resource:///cursors/images/nw_resize_cursor.png</property>
+                                <property name="paintable">resource:///cursors/nw_resize_cursor.png</property>
                              </object>
                            </child>
                            <child>
@@ -2414,7 +2414,7 @@
                            <property name="spacing">10</property>
                            <child>
                              <object class="GtkImage">
-                                <property name="paintable">resource:///cursors/images/sw_resize_cursor.png</property>
+                                <property name="paintable">resource:///cursors/sw_resize_cursor.png</property>
                              </object>
                            </child>
                            <child>
@@ -2474,7 +2474,7 @@
                            <property name="spacing">10</property>
                            <child>
                              <object class="GtkImage">
-                                <property name="paintable">resource:///cursors/images/se_resize_cursor.png</property>
+                                <property name="paintable">resource:///cursors/se_resize_cursor.png</property>
                              </object>
                            </child>
                            <child>
@@ -2534,7 +2534,7 @@
                            <property name="spacing">10</property>
                            <child>
                              <object class="GtkImage">
-                                <property name="paintable">resource:///cursors/images/ew_resize_cursor.png</property>
+                                <property name="paintable">resource:///cursors/ew_resize_cursor.png</property>
                              </object>
                            </child>
                            <child>
@@ -2594,7 +2594,7 @@
                            <property name="spacing">10</property>
                            <child>
                              <object class="GtkImage">
-                                <property name="paintable">resource:///cursors/images/ns_resize_cursor.png</property>
+                                <property name="paintable">resource:///cursors/ns_resize_cursor.png</property>
                              </object>
                            </child>
                            <child>
@@ -2654,7 +2654,7 @@
                            <property name="spacing">10</property>
                            <child>
                              <object class="GtkImage">
-                                <property name="paintable">resource:///cursors/images/nesw_resize_cursor.png</property>
+                                <property name="paintable">resource:///cursors/nesw_resize_cursor.png</property>
                              </object>
                            </child>
                            <child>
@@ -2714,7 +2714,7 @@
                            <property name="spacing">10</property>
                            <child>
                              <object class="GtkImage">
-                                <property name="paintable">resource:///cursors/images/nwse_resize_cursor.png</property>
+                                <property name="paintable">resource:///cursors/nwse_resize_cursor.png</property>
                              </object>
                            </child>
                            <child>
@@ -2787,7 +2787,7 @@
                            <property name="spacing">10</property>
                            <child>
                              <object class="GtkImage">
-                                <property name="paintable">resource:///cursors/images/zoom_in_cursor.png</property>
+                                <property name="paintable">resource:///cursors/zoom_in_cursor.png</property>
                              </object>
                            </child>
                            <child>
@@ -2847,7 +2847,7 @@
                            <property name="spacing">10</property>
                            <child>
                              <object class="GtkImage">
-                                <property name="paintable">resource:///cursors/images/zoom_out_cursor.png</property>
+                                <property name="paintable">resource:///cursors/zoom_out_cursor.png</property>
                              </object>
                            </child>
                            <child>
--- a/demos/gtk-demo/demo.gresource.xml
+++ b/demos/gtk-demo/demo.gresource.xml
@@ -15,13 +15,9 @@
    <file>demo.ui</file>
  </gresource>
  <gresource prefix="/clipboard">
-    <file>clipboard.ui</file>
    <file>demoimage.c</file>
    <file>demoimage.h</file>
  </gresource>
-  <gresource prefix="/constraints_builder">
-    <file>constraints_builder.ui</file>
-  </gresource>
  <gresource prefix="/css_accordion">
    <file>css_accordion.css</file>
    <file>reset.css</file>
@@ -44,11 +40,6 @@
    <file>cssview.css</file>
    <file>reset.css</file>
  </gresource>
-  <gresource prefix="/dropdown">
-    <file>suggestionentry.h</file>
-    <file>suggestionentry.c</file>
-    <file>suggestionentry.css</file>
-  </gresource>
  <gresource prefix="/theming_style_classes">
    <file>theming.ui</file>
  </gresource>
@@ -60,8 +51,6 @@
    <file>cssview.css</file>
    <file>reset.css</file>
    <file>background.jpg</file>
-  </gresource>
-  <gresource prefix="/css_pixbufs/images">
    <file>apple-red.png</file>
    <file>gnome-applets.png</file>
    <file>gnome-calendar.png</file>
@@ -78,8 +67,6 @@
  </gresource>
  <gresource prefix="/cursors">
    <file>cursors.ui</file>
-  </gresource>
-  <gresource prefix="/cursors/images">
    <file>alias_cursor.png</file>
    <file>all_scroll_cursor.png</file>
    <file>cell_cursor.png</file>
@@ -121,45 +108,15 @@
  <gresource prefix="/dnd">
    <file>dnd.css</file>
  </gresource>
-  <gresource prefix="/errorstates">
-    <file>errorstates.ui</file>
-  </gresource>
  <gresource prefix="/fishbowl">
    <file>fishbowl.ui</file>
    <file>gtkfishbowl.c</file>
    <file>gtkfishbowl.h</file>
  </gresource>
-  <gresource prefix="/frames">
-    <file>frames.ui</file>
-  </gresource>
  <gresource prefix="/gears">
    <file>gtkgears.c</file>
    <file>gtkgears.h</file>
  </gresource>
-  <gresource prefix="/shadertoy">
-    <file>gtkshadertoy.c</file>
-    <file>gtkshadertoy.h</file>
-    <file>alienplanet.glsl</file>
-    <file>mandelbrot.glsl</file>
-    <file>neon.glsl</file>
-    <file>cogs.glsl</file>
-    <file>glowingstars.glsl</file>
-  </gresource>
-  <gresource prefix="/gltransition">
-    <file>gtkshaderstack.c</file>
-    <file>gtkshaderstack.h</file>
-    <file>gtkshaderbin.h</file>
-    <file>gtkshaderbin.c</file>
-    <file>gskshaderpaintable.h</file>
-    <file>gskshaderpaintable.c</file>
-    <file>wind.glsl</file>
-    <file>radial.glsl</file>
-    <file>crosswarp.glsl</file>
-    <file>kaleidoscope.glsl</file>
-    <file>cogs2.glsl</file>
-    <file>ripple.glsl</file>
-    <file>background.glsl</file>
-  </gresource>
  <gresource prefix="/iconscroll">
    <file>iconscroll.ui</file>
  </gresource>
@@ -167,24 +124,6 @@
    <file>gnome-fs-directory.png</file>
    <file>gnome-fs-regular.png</file>
  </gresource>
-  <gresource prefix="/layoutmanager">
-    <file>demolayout.h</file>
-    <file>demolayout.c</file>
-    <file>demowidget.h</file>
-    <file>demowidget.c</file>
-    <file>demochild.h</file>
-    <file>demochild.c</file>
-  </gresource>
-  <gresource prefix="/layoutmanager2">
-    <file>demo2layout.h</file>
-    <file>demo2layout.c</file>
-    <file>demo2widget.h</file>
-    <file>demo2widget.c</file>
-    <file>four_point_transform.h</file>
-    <file>four_point_transform.c</file>
-    <file>singular_value_decomposition.h</file>
-    <file>singular_value_decomposition.c</file>
-  </gresource>
  <gresource prefix="/listview_filebrowser">
    <file>listview_filebrowser.ui</file>
    <file>listview_filebrowser.css</file>
@@ -196,9 +135,6 @@
  <gresource prefix="/listview_settings">
    <file>listview_settings.ui</file>
  </gresource>
-  <gresource prefix="/listview_ucd_data/">
-    <file>ucdnames.data</file>
-  </gresource>
  <gresource prefix="/listview_weather">
    <file compressed="true">listview_weather.txt</file>
  </gresource>
@@ -206,21 +142,6 @@
    <file compressed="true">color.names.txt</file>
    <file>listview_colors.css</file>
  </gresource>
-  <gresource prefix="/main">
-    <file>fontify.c</file>
-    <file>fontify.h</file>
-    <file>main.ui</file>
-  </gresource>
-  <gresource prefix="/menu">
-    <file>demo3widget.c</file>
-    <file>demo3widget.h</file>
-    <file>demo3widget.ui</file>
-  </gresource>
-  <gresource prefix="/paintable_svg">
-    <file>svgpaintable.h</file>
-    <file>svgpaintable.c</file>
-    <file>org.gtk.gtk4.NodeEditor.Devel.svg</file>
-  </gresource>
  <gresource prefix="/shortcuts">
    <file>shortcuts.ui</file>
    <file>shortcuts-builder.ui</file>
@@ -240,15 +161,20 @@
    <file>revealer.ui</file>
  </gresource>
  <gresource prefix="/images">
-    <file>pixbufpaintable.h</file>
-    <file>pixbufpaintable.c</file>
    <file>alphatest.png</file>
    <file>floppybuddy.gif</file>
    <file>gtk-logo.webm</file>
-    <file alias="org.gtk.Demo4.svg">data/scalable/apps/org.gtk.Demo4.svg</file>
  </gresource>
-  <gresource prefix="/video-player">
-    <file>bbb.png</file>
+  <gresource prefix="/pixbufs">
+    <file>apple-red.png</file>
+    <file>background.jpg</file>
+    <file>gnome-applets.png</file>
+    <file>gnome-calendar.png</file>
+    <file>gnome-foot.png</file>
+    <file>gnome-gmush.png</file>
+    <file>gnome-gimp.png</file>
+    <file>gnome-gsame.png</file>
+    <file>gnu-keys.png</file>
  </gresource>
  <gresource prefix="/sources">
    <file>application_demo.c</file>
@@ -257,9 +183,8 @@
    <file>clipboard.c</file>
    <file>combobox.c</file>
    <file>constraints.c</file>
-    <file>constraints_interactive.c</file>
-    <file>constraints_vfl.c</file>
-    <file>constraints_builder.c</file>
+    <file>constraints2.c</file>
+    <file>constraints3.c</file>
    <file>css_accordion.c</file>
    <file>css_basics.c</file>
    <file>css_blendmodes.c</file>
@@ -274,20 +199,17 @@
    <file>editable_cells.c</file>
    <file>entry_completion.c</file>
    <file>entry_undo.c</file>
-    <file>errorstates.c</file>
    <file>expander.c</file>
    <file>filtermodel.c</file>
    <file>fishbowl.c</file>
    <file>fixed.c</file>
    <file>flowbox.c</file>
-    <file>frames.c</file>
    <file>font_features.c</file>
    <file>fontplane.c</file>
    <file>fontrendering.c</file>
    <file>gears.c</file>
    <file>gestures.c</file>
    <file>glarea.c</file>
-    <file>gltransition.c</file>
    <file>headerbar.c</file>
    <file>hypertext.c</file>
    <file>iconscroll.c</file>
@@ -295,45 +217,37 @@
    <file>iconview_edit.c</file>
    <file>images.c</file>
    <file>infobar.c</file>
-    <file>layoutmanager.c</file>
-    <file>layoutmanager2.c</file>
    <file>links.c</file>
    <file>listbox.c</file>
-    <file>listbox_controls.c</file>
    <file>listview_applauncher.c</file>
    <file>listview_colors.c</file>
    <file>listview_clocks.c</file>
    <file>listview_filebrowser.c</file>
    <file>listview_minesweeper.c</file>
    <file>listview_settings.c</file>
-    <file>listview_ucd.c</file>
    <file>listview_weather.c</file>
    <file>listview_words.c</file>
    <file>list_store.c</file>
-    <file>main.c</file>
    <file>markup.c</file>
-    <file>menu.c</file>
+    <file>modelbutton.c</file>
    <file>overlay.c</file>
-    <file>overlay_decorative.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_emblem.c</file>
    <file>paintable_mediastream.c</file>
-    <file>paintable_svg.c</file>
-    <file>paintable_symbolic.c</file>
    <file>panes.c</file>
    <file>password_entry.c</file>
    <file>peg_solitaire.c</file>
    <file>pickers.c</file>
+    <file>pixbufs.c</file>
    <file>printing.c</file>
    <file>revealer.c</file>
    <file>rotated_text.c</file>
    <file>scale.c</file>
    <file>search_entry.c</file>
    <file>search_entry2.c</file>
-    <file>shadertoy.c</file>
    <file>shortcuts.c</file>
    <file>shortcut_triggers.c</file>
    <file>sizegroup.c</file>
@@ -365,9 +279,6 @@
    <file>messages.txt</file>
    <file>apple-red.png</file>
  </gresource>
-  <gresource prefix="/listbox_controls">
-    <file>listbox_controls.ui</file>
-  </gresource>
  <gresource prefix="/glarea">
    <file>glarea-gl.fs.glsl</file>
    <file>glarea-gl.vs.glsl</file>
@@ -399,6 +310,9 @@
  <gresource prefix="/scale">
    <file>scale.ui</file>
  </gresource>
+  <gresource prefix="/modelbutton">
+    <file>modelbutton.ui</file>
+  </gresource>
  <gresource prefix="/tagged_entry">
    <file>demotaggedentry.c</file>
    <file>demotaggedentry.h</file>
--- a/demos/gtk-demo/demo.ui
+++ b/demos/gtk-demo/demo.ui
@@ -29,24 +29,29 @@
        <item>
          <attribute name="label" translatable="yes">_New</attribute>
          <attribute name="action">win.new</attribute>
+          <attribute name="accel">&lt;Control&gt;n</attribute>
        </item>
        <item>
          <attribute name="label" translatable="yes">_Open</attribute>
          <attribute name="action">win.open</attribute>
+          <attribute name="accel">&lt;Control&gt;o</attribute>
        </item>
        <item>
          <attribute name="label" translatable="yes">_Save</attribute>
          <attribute name="action">win.save</attribute>
+          <attribute name="accel">&lt;Control&gt;s</attribute>
        </item>
        <item>
          <attribute name="label" translatable="yes">Save _As</attribute>
          <attribute name="action">win.save-as</attribute>
+          <attribute name="accel">&lt;Control&gt;q</attribute>
        </item>
      </section>
      <section>
        <item>
          <attribute name="label" translatable="yes">_Quit</attribute>
          <attribute name="action">win.quit</attribute>
+          <attribute name="accel">&lt;Control&gt;&lt;Shift&gt;s</attribute>
        </item>
      </section>
    </submenu>
@@ -56,14 +61,17 @@
        <item>
          <attribute name="label" translatable="yes">_Copy</attribute>
          <attribute name="action">win.copy</attribute>
+          <attribute name="accel">&lt;Control&gt;c</attribute>
        </item>
        <item>
          <attribute name="label" translatable="yes">_Cut</attribute>
          <attribute name="action">win.cut</attribute>
+          <attribute name="accel">&lt;Control&gt;x</attribute>
        </item>
        <item>
          <attribute name="label" translatable="yes">_Paste</attribute>
          <attribute name="action">win.paste</attribute>
+          <attribute name="accel">&lt;Control&gt;v</attribute>
        </item>
      </section>
    </submenu>
@@ -73,18 +81,23 @@
        <item>
          <attribute name="label" translatable="yes">_Help</attribute>
          <attribute name="action">win.help</attribute>
+          <attribute name="accel">F1</attribute>
        </item>
        <item>
          <attribute name="label" translatable="yes">_About</attribute>
          <attribute name="action">win.about</attribute>
+          <attribute name="accel">F7</attribute>
        </item>
      </section>
    </submenu>
  </menu>
  <object class="GtkAboutDialog" id="aboutdialog1">
    <property name="program-name" translatable="yes">Builder demo</property>
-    <property name="logo-icon-name" translatable="yes">org.gtk.Demo4</property>
+    <property name="logo-icon-name" translatable="yes">gtk3-demo</property>
    <property name="modal">True</property>
+    <accessibility>
+      <relation target="window1" type="subwindow-of"/>
+    </accessibility>
  </object>
  <object class="GtkWindow" id="window1">
    <property name="default-height">250</property>
@@ -96,24 +109,20 @@
        <child>
          <object class="GtkPopoverMenuBar" id="menubar1">
            <property name="menu-model">menubar</property>
-            <accessibility>
-              <property name="label">Main Menu</property>
-            </accessibility>
          </object>
        </child>
        <child>
          <object class="GtkBox" id="toolbar1">
-            <property name="accessible-role">toolbar</property>
-            <property name="css-classes">toolbar</property>
-            <accessibility>
-              <property name="label">Toolbar</property>
-            </accessibility>
+            <child internal-child="accessible">
+              <object class="AtkObject" id="a11y-toolbar">
+                <property name="AtkObject::accessible-name">The toolbar</property>
+              </object>
+            </child>
            <child>
              <object class="GtkButton">
                <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>
-                <property name="action-name">win.new</property>
              </object>
            </child>
            <child>
@@ -121,7 +130,6 @@
                <property name="label" translatable="yes">Open</property>
                <property name="tooltip-text" translatable="yes">Open a file</property>
                <property name="icon-name">document-open</property>
-                <property name="action-name">win.open</property>
              </object>
            </child>
            <child>
@@ -129,7 +137,6 @@
                <property name="label" translatable="yes">Save</property>
                <property name="tooltip-text" translatable="yes">Save a file</property>
                <property name="icon-name">document-save</property>
-                <property name="action-name">win.save</property>
              </object>
            </child>
            <child>
@@ -140,7 +147,6 @@
                <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>
-                <property name="action-name">win.copy</property>
              </object>
            </child>
            <child>
@@ -148,7 +154,6 @@
                <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>
-                <property name="action-name">win.cut</property>
              </object>
            </child>
            <child>
@@ -156,7 +161,6 @@
                <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>
-                <property name="action-name">win.paste</property>
              </object>
            </child>
          </object>
@@ -170,6 +174,14 @@
              <object class="GtkTreeView" id="treeview1">
                <property name="model">liststore1</property>
                <property name="tooltip-column">3</property>
+                <child internal-child="accessible">
+                  <object class="AtkObject" id="a11y-treeview">
+                    <property name="AtkObject::accessible-name">Name list</property>
+                    <property name="AtkObject::accessible-description">
+                                    A list of person with name, surname and age columns
+                                  </property>
+                  </object>
+                </child>
                <child>
                  <object class="GtkTreeViewColumn" id="column1">
                    <property name="title">Name</property>
--- a/demos/gtk-demo/demo2layout.c
+++ b/demos/gtk-demo/demo2layout.c
@@ -1,204 +0,0 @@
-#include "demo2layout.h"
-#include "four_point_transform.h"
-
-struct _Demo2Layout
-{
-  GtkLayoutManager parent_instance;
-
-  float position;
-  float offset;
-};
-
-struct _Demo2LayoutClass
-{
-  GtkLayoutManagerClass parent_class;
-};
-
-G_DEFINE_TYPE (Demo2Layout, demo2_layout, GTK_TYPE_LAYOUT_MANAGER)
-
-static void
-demo2_layout_measure (GtkLayoutManager *layout_manager,
-                      GtkWidget        *widget,
-                      GtkOrientation    orientation,
-                      int               for_size,
-                      int              *minimum,
-                      int              *natural,
-                      int              *minimum_baseline,
-                      int              *natural_baseline)
-{
-  GtkWidget *child;
-  int minimum_size = 0;
-  int natural_size = 0;
-
-  for (child = gtk_widget_get_first_child (widget);
-       child != NULL;
-       child = gtk_widget_get_next_sibling (child))
-    {
-      int child_min = 0, child_nat = 0;
-
-      if (!gtk_widget_should_layout (child))
-        continue;
-
-      gtk_widget_measure (child, orientation, -1,
-                          &child_min, &child_nat,
-                          NULL, NULL);
-      minimum_size = MAX (minimum_size, child_min);
-      natural_size = MAX (natural_size, child_nat);
-    }
-
-  *minimum = minimum_size;
-  *natural = 3 * natural_size;
-}
-
-
-#define RADIANS(angle) ((angle)*M_PI/180.0);
-
-/* Spherical coordinates */
-#define SX(r,t,p) ((r) * sin (t) * cos (p))
-#define SZ(r,t,p) ((r) * sin (t) * sin (p))
-#define SY(r,t,p) ((r) * cos (t))
-
-static double
-map_offset (double x)
-{
-  x = fmod (x, 180.0);
-  if (x < 0.0)
-    x += 180.0;
-
-  return x;
-}
-
-static void
-demo2_layout_allocate (GtkLayoutManager *layout_manager,
-                       GtkWidget        *widget,
-                       int               width,
-                       int               height,
-                       int               baseline)
-{
-  GtkWidget *child;
-  GtkRequisition child_req;
-  int i, j, k;
-  float x0, y0;
-  float w, h;
-  graphene_point3d_t p1, p2, p3, p4;
-  graphene_point3d_t q1, q2, q3, q4;
-  double t_1, t_2, p_1, p_2;
-  double r;
-  graphene_matrix_t m;
-  GskTransform *transform;
-  double position = DEMO2_LAYOUT (layout_manager)->position;
-  double offset = DEMO2_LAYOUT (layout_manager)->offset;
-
-  /* for simplicity, assume all children are the same size */
-  gtk_widget_get_preferred_size (gtk_widget_get_first_child (widget), &child_req, NULL);
-  w = child_req.width;
-  h = child_req.height;
-
-  r = 300;
-  x0 = y0 = 300;
-
-  for (child = gtk_widget_get_first_child (widget), i = 0;
-       child != NULL;
-       child = gtk_widget_get_next_sibling (child), i++)
-    {
-      j = i / 36;
-      k = i % 36;
-
-      gtk_widget_set_child_visible (child, FALSE);
-
-      graphene_point3d_init (&p1, w, h, 1.);
-      graphene_point3d_init (&p2, w, 0., 1.);
-      graphene_point3d_init (&p3, 0., 0., 1.);
-      graphene_point3d_init (&p4, 0., h, 1.);
-
-      t_1 = RADIANS (map_offset (offset + 10 * j));
-      t_2 = RADIANS (map_offset (offset + 10 * (j + 1)));
-      p_1 = RADIANS (position + 10 * k);
-      p_2 = RADIANS (position + 10 * (k + 1));
-
-      if (t_2 < t_1)
-        continue;
-
-      if (SZ (r, t_1, p_1) > 0 ||
-          SZ (r, t_2, p_1) > 0 ||
-          SZ (r, t_1, p_2) > 0 ||
-          SZ (r, t_2, p_2) > 0)
-        continue;
-
-      gtk_widget_set_child_visible (child, TRUE);
-
-      graphene_point3d_init (&q1, x0 + SX (r, t_1, p_1), y0 + SY (r, t_1, p_1), SZ (r, t_1, p_1));
-      graphene_point3d_init (&q2, x0 + SX (r, t_2, p_1), y0 + SY (r, t_2, p_1), SZ (r, t_2, p_1));
-      graphene_point3d_init (&q3, x0 + SX (r, t_2, p_2), y0 + SY (r, t_2, p_2), SZ (r, t_2, p_2));
-      graphene_point3d_init (&q4, x0 + SX (r, t_1, p_2), y0 + SY (r, t_1, p_2), SZ (r, t_1, p_2));
-
-      /* Get a matrix that moves p1 -> q1, p2 -> q2, ... */
-      perspective_3d (&p1, &p2, &p3, &p4,
-                      &q1, &q2, &q3, &q4,
-                      &m);
-
-      transform = gsk_transform_matrix (NULL, &m);
-
-      /* Since our matrix was built for transforming points with z = 1,
-       * prepend a translation to the z = 1 plane.
-       */
-      transform = gsk_transform_translate_3d (transform,
-                                              &GRAPHENE_POINT3D_INIT (0, 0, 1));
-
-      gtk_widget_allocate (child, w, h, -1, transform);
-    }
-}
-
-static GtkSizeRequestMode
-demo2_layout_get_request_mode (GtkLayoutManager *layout_manager,
-                               GtkWidget        *widget)
-{
-  return GTK_SIZE_REQUEST_CONSTANT_SIZE;
-}
-
-static void
-demo2_layout_class_init (Demo2LayoutClass *klass)
-{
-  GtkLayoutManagerClass *layout_class = GTK_LAYOUT_MANAGER_CLASS (klass);
-
-  layout_class->get_request_mode = demo2_layout_get_request_mode;
-  layout_class->measure = demo2_layout_measure;
-  layout_class->allocate = demo2_layout_allocate;
-}
-
-static void
-demo2_layout_init (Demo2Layout *self)
-{
-}
-
-GtkLayoutManager *
-demo2_layout_new (void)
-{
-  return g_object_new (DEMO2_TYPE_LAYOUT, NULL);
-}
-
-void
-demo2_layout_set_position (Demo2Layout *layout,
-                           float        position)
-{
-  layout->position = position;
-}
-
-float
-demo2_layout_get_position (Demo2Layout *layout)
-{
-  return layout->position;
-}
-
-void
-demo2_layout_set_offset (Demo2Layout *layout,
-                         float        offset)
-{
-  layout->offset = offset;
-}
-
-float
-demo2_layout_get_offset (Demo2Layout *layout)
-{
-  return layout->offset;
-}
--- a/demos/gtk-demo/demo2layout.h
+++ b/demos/gtk-demo/demo2layout.h
@@ -1,16 +0,0 @@
-#pragma once
-
-#include <gtk/gtk.h>
-
-#define DEMO2_TYPE_LAYOUT (demo2_layout_get_type ())
-
-G_DECLARE_FINAL_TYPE (Demo2Layout, demo2_layout, DEMO2, LAYOUT, GtkLayoutManager)
-
-GtkLayoutManager * demo2_layout_new          (void);
-
-void               demo2_layout_set_position (Demo2Layout *layout,
-                                              float        position);
-float              demo2_layout_get_position (Demo2Layout *layout);
-void               demo2_layout_set_offset   (Demo2Layout *layout,
-                                              float        offset);
-float              demo2_layout_get_offset   (Demo2Layout *layout);
--- a/demos/gtk-demo/demo2widget.c
+++ b/demos/gtk-demo/demo2widget.c
@@ -1,172 +0,0 @@
-#include "demo2widget.h"
-#include "demo2layout.h"
-
-struct _Demo2Widget
-{
-  GtkWidget parent_instance;
-
-  gint64 start_time;
-  gint64 end_time;
-  float start_position;
-  float end_position;
-  float start_offset;
-  float end_offset;
-  gboolean animating;
-};
-
-struct _Demo2WidgetClass
-{
-  GtkWidgetClass parent_class;
-};
-
-G_DEFINE_TYPE (Demo2Widget, demo2_widget, GTK_TYPE_WIDGET)
-
-static void
-demo2_widget_init (Demo2Widget *self)
-{
-  gtk_widget_set_focusable (GTK_WIDGET (self), TRUE);
-}
-
-static void
-demo2_widget_dispose (GObject *object)
-{
-  GtkWidget *child;
-
-  while ((child = gtk_widget_get_first_child (GTK_WIDGET (object))))
-    gtk_widget_unparent (child);
-
-  G_OBJECT_CLASS (demo2_widget_parent_class)->dispose (object);
-}
-
-/* From clutter-easing.c, based on Robert Penner's
- * infamous easing equations, MIT license.
- */
-static double
-ease_out_cubic (double t)
-{
-  double p = t - 1;
-
-  return p * p * p + 1;
-}
-
-static gboolean
-update_position (GtkWidget     *widget,
-                 GdkFrameClock *clock,
-                 gpointer       data)
-{
-  Demo2Widget *self = DEMO2_WIDGET (widget);
-  Demo2Layout *layout = DEMO2_LAYOUT (gtk_widget_get_layout_manager (widget));
-  gint64 now;
-  double t;
-
-  now = gdk_frame_clock_get_frame_time (clock);
-
-  if (now >= self->end_time)
-    {
-      self->animating = FALSE;
-
-      return G_SOURCE_REMOVE;
-    }
-
-  t = (now - self->start_time) / (double) (self->end_time - self->start_time);
-
-  t = ease_out_cubic (t);
-
-  demo2_layout_set_position (layout, self->start_position + t * (self->end_position - self->start_position));
-  demo2_layout_set_offset (layout, self->start_offset + t * (self->end_offset - self->start_offset));
-  gtk_widget_queue_allocate (widget);
-
-  return G_SOURCE_CONTINUE;
-}
-
-static void
-rotate_sphere (GtkWidget  *widget,
-               const char *action,
-               GVariant   *parameters)
-{
-  Demo2Widget *self = DEMO2_WIDGET (widget);
-  Demo2Layout *layout = DEMO2_LAYOUT (gtk_widget_get_layout_manager (widget));
-  GtkOrientation orientation;
-  int direction;
-
-  g_variant_get (parameters, "(ii)", &orientation, &direction);
-
-  self->end_position = self->start_position = demo2_layout_get_position (layout);
-  self->end_offset = self->start_offset = demo2_layout_get_offset (layout);
-  if (orientation == GTK_ORIENTATION_HORIZONTAL)
-    self->end_position += 10 * direction;
-  else
-    self->end_offset += 10 * direction;
-  self->start_time = g_get_monotonic_time ();
-  self->end_time = self->start_time + 0.5 * G_TIME_SPAN_SECOND;
-
-  if (!self->animating)
-    {
-      gtk_widget_add_tick_callback (widget, update_position, NULL, NULL);
-      self->animating = TRUE;
-    }
-}
-
-static void
-demo2_widget_snapshot (GtkWidget   *widget,
-                       GtkSnapshot *snapshot)
-{
-  GtkWidget *child;
-
-  for (child = gtk_widget_get_first_child (widget);
-       child != NULL;
-       child = gtk_widget_get_next_sibling (child))
-    {
-      /* our layout manager sets this for children that are out of view */
-      if (!gtk_widget_get_child_visible (child))
-        continue;
-
-      gtk_widget_snapshot_child (widget, child, snapshot);
-    }
-}
-
-static void
-demo2_widget_class_init (Demo2WidgetClass *class)
-{
-  GObjectClass *object_class = G_OBJECT_CLASS (class);
-  GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
-
-  object_class->dispose = demo2_widget_dispose;
-
-  widget_class->snapshot = demo2_widget_snapshot;
-
-  gtk_widget_class_install_action (widget_class, "rotate", "(ii)", rotate_sphere);
-
-  gtk_widget_class_add_binding_action (widget_class,
-                                       GDK_KEY_Left, 0,
-                                       "rotate",
-                                       "(ii)", GTK_ORIENTATION_HORIZONTAL, -1);
-  gtk_widget_class_add_binding_action (widget_class,
-                                       GDK_KEY_Right, 0,
-                                       "rotate",
-                                       "(ii)", GTK_ORIENTATION_HORIZONTAL, 1);
-  gtk_widget_class_add_binding_action (widget_class,
-                                       GDK_KEY_Up, 0,
-                                       "rotate",
-                                       "(ii)", GTK_ORIENTATION_VERTICAL, 1);
-  gtk_widget_class_add_binding_action (widget_class,
-                                       GDK_KEY_Down, 0,
-                                       "rotate",
-                                       "(ii)", GTK_ORIENTATION_VERTICAL, -1);
-
-  /* here is where we use our custom layout manager */
-  gtk_widget_class_set_layout_manager_type (widget_class, DEMO2_TYPE_LAYOUT);
-}
-
-GtkWidget *
-demo2_widget_new (void)
-{
-  return g_object_new (DEMO2_TYPE_WIDGET, NULL);
-}
-
-void
-demo2_widget_add_child (Demo2Widget *self,
-                        GtkWidget   *child)
-{
-  gtk_widget_set_parent (child, GTK_WIDGET (self));
-}
--- a/demos/gtk-demo/demo2widget.h
+++ b/demos/gtk-demo/demo2widget.h
@@ -1,11 +0,0 @@
-#pragma once
-
-#include <gtk/gtk.h>
-
-#define DEMO2_TYPE_WIDGET (demo2_widget_get_type ())
-G_DECLARE_FINAL_TYPE (Demo2Widget, demo2_widget, DEMO2, WIDGET, GtkWidget)
-
-GtkWidget * demo2_widget_new       (void);
-
-void        demo2_widget_add_child (Demo2Widget *self,
-                                    GtkWidget  *child);
--- a/demos/gtk-demo/demo3widget.c
+++ b/demos/gtk-demo/demo3widget.c
@@ -1,243 +0,0 @@
-#include <math.h>
-#include "demo3widget.h"
-
-enum
-{
-  PROP_PAINTABLE = 1,
-  PROP_SCALE
-};
-
-struct _Demo3Widget
-{
-  GtkWidget parent_instance;
-
-  GdkPaintable *paintable;
-  float scale;
-
-  GtkWidget *menu;
-};
-
-struct _Demo3WidgetClass
-{
-  GtkWidgetClass parent_class;
-};
-
-G_DEFINE_TYPE (Demo3Widget, demo3_widget, GTK_TYPE_WIDGET)
-
-static void
-demo3_widget_init (Demo3Widget *self)
-{
-  self->scale = 1.f;
-  gtk_widget_init_template (GTK_WIDGET (self));
-}
-
-static void
-demo3_widget_dispose (GObject *object)
-{
-  Demo3Widget *self = DEMO3_WIDGET (object);
-
-  g_clear_object (&self->paintable);
-  g_clear_pointer (&self->menu, gtk_widget_unparent);
-
-  G_OBJECT_CLASS (demo3_widget_parent_class)->dispose (object);
-}
-
-static void
-demo3_widget_snapshot (GtkWidget   *widget,
-                       GtkSnapshot *snapshot)
-{
-  Demo3Widget *self = DEMO3_WIDGET (widget);
-  int x, y, width, height;
-  double w, h;
-
-  width = gtk_widget_get_width (widget);
-  height = gtk_widget_get_height (widget);
-
-  w = self->scale * gdk_paintable_get_intrinsic_width (self->paintable);
-  h = self->scale * gdk_paintable_get_intrinsic_height (self->paintable);
-
-  x = MAX (0, (width - ceil (w)) / 2);
-  y = MAX (0, (height - ceil (h)) / 2);
-
-  gtk_snapshot_push_clip (snapshot, &GRAPHENE_RECT_INIT (0, 0, width, height));
-  gtk_snapshot_save (snapshot);
-  gtk_snapshot_translate (snapshot, &GRAPHENE_POINT_INIT (x, y));
-  gdk_paintable_snapshot (self->paintable, snapshot, w, h);
-  gtk_snapshot_restore (snapshot);
-  gtk_snapshot_pop (snapshot);
-}
-
-static void
-demo3_widget_measure (GtkWidget      *widget,
-                      GtkOrientation  orientation,
-                      int             for_size,
-                      int            *minimum,
-                      int            *natural,
-                      int            *minimum_baseline,
-                      int            *natural_baseline)
-{
-  Demo3Widget *self = DEMO3_WIDGET (widget);
-  int size;
-
-  if (orientation == GTK_ORIENTATION_HORIZONTAL)
-    size = gdk_paintable_get_intrinsic_width (self->paintable);
-  else
-    size = gdk_paintable_get_intrinsic_height (self->paintable);
-
-  *minimum = *natural = self->scale * size;
-}
-
-static void
-demo3_widget_size_allocate (GtkWidget *widget,
-                            int        width,
-                            int        height,
-                            int        baseline)
-{
-  Demo3Widget *self = DEMO3_WIDGET (widget);
-
-  /* Since we are not using a layout manager (who would do this
-   * for us), we need to allocate a size for our menu by calling
-   * gtk_popover_present().
-   */
-  gtk_popover_present (GTK_POPOVER (self->menu));
-}
-
-static void
-demo3_widget_set_property (GObject      *object,
-                           guint         prop_id,
-                           const GValue *value,
-                           GParamSpec   *pspec)
-{
-  Demo3Widget *self = DEMO3_WIDGET (object);
-
-  switch (prop_id)
-    {
-    case PROP_PAINTABLE:
-      g_clear_object (&self->paintable);
-      self->paintable = g_value_dup_object (value);
-      gtk_widget_queue_resize (GTK_WIDGET (object));
-      break;
-
-    case PROP_SCALE:
-      self->scale = g_value_get_float (value);
-      gtk_widget_queue_resize (GTK_WIDGET (object));
-      break;
-
-    default:
-      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
-      break;
-    }
-}
-
-static void
-demo3_widget_get_property (GObject     *object,
-                           guint        prop_id,
-                           GValue      *value,
-                           GParamSpec  *pspec)
-{
-  Demo3Widget *self = DEMO3_WIDGET (object);
-
-  switch (prop_id)
-    {
-    case PROP_PAINTABLE:
-      g_value_set_object (value, self->paintable);
-      break;
-
-    case PROP_SCALE:
-      g_value_set_float (value, self->scale);
-      break;
-
-    default:
-      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
-      break;
-    }
-}
-
-static void
-pressed_cb (GtkGestureClick *gesture,
-            guint            n_press,
-            double           x,
-            double           y,
-            Demo3Widget     *self)
-{
-  /* We are placing our menu at the point where
-   * the click happened, before popping it up.
-   */
-  gtk_popover_set_pointing_to (GTK_POPOVER (self->menu),
-                               &(const GdkRectangle){ x, y, 1, 1 });
-  gtk_popover_popup (GTK_POPOVER (self->menu));
-}
-
-static void
-zoom_cb (GtkWidget  *widget,
-         const char *action_name,
-         GVariant   *parameter)
-{
-  Demo3Widget *self = DEMO3_WIDGET (widget);
-  float scale;
-
-  if (g_str_equal (action_name, "zoom.in"))
-    scale = MIN (10, self->scale * M_SQRT2);
-  else if (g_str_equal (action_name, "zoom.out"))
-    scale = MAX (0.01, self->scale / M_SQRT2);
-  else
-    scale = 1.0;
-
-  gtk_widget_action_set_enabled (widget, "zoom.in", scale < 10);
-  gtk_widget_action_set_enabled (widget, "zoom.out", scale > 0.01);
-  gtk_widget_action_set_enabled (widget, "zoom.reset", scale != 1);
-
-  g_object_set (widget, "scale", scale, NULL);
-}
-
-static void
-demo3_widget_class_init (Demo3WidgetClass *class)
-{
-  GObjectClass *object_class = G_OBJECT_CLASS (class);
-  GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
-
-  object_class->dispose = demo3_widget_dispose;
-  object_class->set_property = demo3_widget_set_property;
-  object_class->get_property = demo3_widget_get_property;
-
-  widget_class->snapshot = demo3_widget_snapshot;
-  widget_class->measure = demo3_widget_measure;
-  widget_class->size_allocate = demo3_widget_size_allocate;
-
-  g_object_class_install_property (object_class, PROP_PAINTABLE,
-      g_param_spec_object ("paintable", "Paintable", "Paintable",
-                           GDK_TYPE_PAINTABLE,
-                           G_PARAM_READWRITE));
-
-  g_object_class_install_property (object_class, PROP_SCALE,
-      g_param_spec_float ("scale", "Scale", "Scale",
-                          0.0, 10.0, 1.0,
-                          G_PARAM_READWRITE));
-
-  /* These are the actions that we are using in the menu */
-  gtk_widget_class_install_action (widget_class, "zoom.in", NULL, zoom_cb);
-  gtk_widget_class_install_action (widget_class, "zoom.out", NULL, zoom_cb);
-  gtk_widget_class_install_action (widget_class, "zoom.reset", NULL, zoom_cb);
-
-  gtk_widget_class_set_template_from_resource (widget_class, "/menu/demo3widget.ui");
-  gtk_widget_class_bind_template_child (widget_class, Demo3Widget, menu);
-  gtk_widget_class_bind_template_callback (widget_class, pressed_cb);
-}
-
-GtkWidget *
-demo3_widget_new (const char *resource)
-{
-  Demo3Widget *self;
-  GdkPixbuf *pixbuf;
-  GdkPaintable *paintable;
-
-  pixbuf = gdk_pixbuf_new_from_resource (resource, NULL);
-  paintable = GDK_PAINTABLE (gdk_texture_new_for_pixbuf (pixbuf));
-
-  self = g_object_new (DEMO3_TYPE_WIDGET, "paintable", paintable, NULL);
-
-  g_object_unref (pixbuf);
-  g_object_unref (paintable);
-
-  return GTK_WIDGET (self);
-}
--- a/demos/gtk-demo/demo3widget.h
+++ b/demos/gtk-demo/demo3widget.h
@@ -1,8 +0,0 @@
-#pragma once
-
-#include <gtk/gtk.h>
-
-#define DEMO3_TYPE_WIDGET (demo3_widget_get_type ())
-G_DECLARE_FINAL_TYPE (Demo3Widget, demo3_widget, DEMO3, WIDGET, GtkWidget)
-
-GtkWidget * demo3_widget_new (const char *resource);
--- a/demos/gtk-demo/demo3widget.ui
+++ b/demos/gtk-demo/demo3widget.ui
@@ -1,30 +0,0 @@
-<interface>
-  <menu id="model">
-    <item>
-      <attribute name="label">Zoom Out</attribute>
-      <attribute name="action">zoom.out</attribute>
-    </item>
-    <item>
-      <attribute name="label">Zoom In</attribute>
-      <attribute name="action">zoom.in</attribute>
-    </item>
-    <item>
-      <attribute name="label">1∶1</attribute>
-      <attribute name="action">zoom.reset</attribute>
-    </item>
-  </menu>
-  <template class="Demo3Widget">
-    <child>
-      <object class="GtkPopoverMenu" id="menu">
-        <property name="has-arrow">0</property>
-        <property name="menu-model">model</property>
-      </object>
-    </child>
-    <child>
-      <object class="GtkGestureClick">
-        <property name="button">3</property>
-        <signal name="pressed" handler="pressed_cb"/>
-      </object>
-    </child>
-  </template>
-</interface>
--- a/demos/gtk-demo/demochild.c
+++ b/demos/gtk-demo/demochild.c
@@ -1,72 +0,0 @@
-#include "demochild.h"
-
-/* This is a trivial child widget just for demo purposes.
- * It draws a 32x32 square in fixed color.
- */
-
-struct _DemoChild
-{
-  GtkWidget parent_instance;
-  GdkRGBA color;
-};
-
-struct _DemoChildClass
-{
-  GtkWidgetClass parent_class;
-};
-
-G_DEFINE_TYPE (DemoChild, demo_child, GTK_TYPE_WIDGET)
-
-static void
-demo_child_init (DemoChild *self)
-{
-}
-
-static void
-demo_child_snapshot (GtkWidget   *widget,
-                     GtkSnapshot *snapshot)
-{
-  DemoChild *self = DEMO_CHILD (widget);
-  int width, height;
-
-  width = gtk_widget_get_width (widget);
-  height = gtk_widget_get_height (widget);
-
-  gtk_snapshot_append_color (snapshot, &self->color,
-                             &GRAPHENE_RECT_INIT(0, 0, width, height));
-}
-
-static void
-demo_child_measure (GtkWidget        *widget,
-                    GtkOrientation    orientation,
-                    int               for_size,
-                    int              *minimum,
-                    int              *natural,
-                    int              *minimum_baseline,
-                    int              *natural_baseline)
-{
-  *minimum = *natural = 32;
-}
-
-static void
-demo_child_class_init (DemoChildClass *class)
-{
-  GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
-
-  widget_class->snapshot = demo_child_snapshot;
-  widget_class->measure = demo_child_measure;
-}
-
-GtkWidget *
-demo_child_new (const char *color)
-{
-  DemoChild *self;
-
-  self = g_object_new (DEMO_TYPE_CHILD,
-                       "tooltip-text", color,
-                       NULL);
-
-  gdk_rgba_parse (&self->color, color);
-
-  return GTK_WIDGET (self);
-}
--- a/demos/gtk-demo/demochild.h
+++ b/demos/gtk-demo/demochild.h
@@ -1,8 +0,0 @@
-#pragma once
-
-#include <gtk/gtk.h>
-
-#define DEMO_TYPE_CHILD (demo_child_get_type ())
-G_DECLARE_FINAL_TYPE (DemoChild, demo_child, DEMO, CHILD, GtkWidget)
-
-GtkWidget * demo_child_new (const char *color);
--- a/demos/gtk-demo/demoimage.c
+++ b/demos/gtk-demo/demoimage.c
@@ -47,38 +47,6 @@ get_image_paintable (GtkImage *image)
    }
 }

-static void
-update_drag_icon (DemoImage   *demo,
-                  GtkDragIcon *icon)
-{
-  const char *icon_name;
-  GdkPaintable *paintable;
-  GtkWidget *image;
-
-  switch (gtk_image_get_storage_type (GTK_IMAGE (demo->image)))
-    {
-    case GTK_IMAGE_PAINTABLE:
-      paintable = gtk_image_get_paintable (GTK_IMAGE (demo->image));
-      image = gtk_image_new_from_paintable (paintable);
-      break;
-    case GTK_IMAGE_ICON_NAME:
-      icon_name = gtk_image_get_icon_name (GTK_IMAGE (demo->image));
-      image = gtk_image_new_from_icon_name (icon_name);
-      break;
-    case GTK_IMAGE_EMPTY:
-    case GTK_IMAGE_GICON:
-    default:
-      g_warning ("Image storage type %d not handled",
-                 gtk_image_get_storage_type (GTK_IMAGE (demo->image)));
-      return;
-    }
-
-  gtk_image_set_pixel_size (GTK_IMAGE (image),
-                            gtk_image_get_pixel_size (GTK_IMAGE (demo->image)));
-
-  gtk_drag_icon_set_child (icon, image);
-}
-
 static void
 drag_begin (GtkDragSource *source,
            GdkDrag       *drag,
@@ -86,8 +54,14 @@ drag_begin (GtkDragSource *source,
 {
  GtkWidget *widget = gtk_event_controller_get_widget (GTK_EVENT_CONTROLLER (source));
  DemoImage *demo = DEMO_IMAGE (widget);
+  GdkPaintable *paintable;

-  update_drag_icon (demo, GTK_DRAG_ICON (gtk_drag_icon_get_for_drag (drag)));
+  paintable = get_image_paintable (GTK_IMAGE (demo->image));
+  if (paintable)
+    {
+      gtk_drag_icon_set_from_paintable (drag, paintable, -2, -2);
+      g_object_unref (paintable);
+    }
 }

 static GdkContentProvider *
@@ -100,11 +74,7 @@ prepare_drag (GtkDragSource *source,
  DemoImage *demo = DEMO_IMAGE (widget);
  GdkPaintable *paintable = get_image_paintable (GTK_IMAGE (demo->image));

-  /* Textures can be serialized, paintables can't, so special case the textures */
-  if (GDK_IS_TEXTURE (paintable))
-    return gdk_content_provider_new_typed (GDK_TYPE_TEXTURE, paintable);
-  else
-    return gdk_content_provider_new_typed (GDK_TYPE_PAINTABLE, paintable);
+  return gdk_content_provider_new_typed (GDK_TYPE_PAINTABLE, paintable);
 }

 static gboolean
@@ -133,11 +103,7 @@ copy_image (GtkWidget *widget,
  GdkPaintable *paintable = get_image_paintable (GTK_IMAGE (demo->image));
  GValue value = G_VALUE_INIT;

-  /* Textures can be serialized, paintables can't, so special case the textures */
-  if (GDK_IS_TEXTURE (paintable))
-    g_value_init (&value, GDK_TYPE_TEXTURE);
-  else
-    g_value_init (&value, GDK_TYPE_PAINTABLE);
+  g_value_init (&value, GDK_TYPE_PAINTABLE);
  g_value_set_object (&value, paintable);
  gdk_clipboard_set_value (clipboard, &value);
  g_value_unset (&value);
@@ -146,46 +112,24 @@ copy_image (GtkWidget *widget,
    g_object_unref (paintable);
 }

-static void
-paste_image_cb (GObject      *source,
-                GAsyncResult *result,
-                gpointer      data)
-{
-  GdkClipboard *clipboard = GDK_CLIPBOARD (source);
-  DemoImage *demo = DEMO_IMAGE (data);
-  const GValue *value;
-
-  value = gdk_clipboard_read_value_finish (clipboard, result, NULL);
-  if (value == NULL)
-    {
-      gtk_widget_error_bell (GTK_WIDGET (demo));
-      g_object_unref (demo);
-      return;
-    }
-
-  gtk_image_set_from_paintable (GTK_IMAGE (demo->image), g_value_get_object (value));
-  g_object_unref (demo);
-}
-
 static void
 paste_image (GtkWidget *widget,
             const char *action_name,
             GVariant *parameter)
 {
  GdkClipboard *clipboard = gtk_widget_get_clipboard (widget);
-  GType type;
+  DemoImage *demo = DEMO_IMAGE (widget);
+  GdkContentProvider *content = gdk_clipboard_get_content (clipboard);
+  GValue value = G_VALUE_INIT;
+  GdkPaintable *paintable;

-  if (gdk_content_formats_contain_gtype (gdk_clipboard_get_formats (clipboard), GDK_TYPE_TEXTURE))
-    type = GDK_TYPE_TEXTURE;
-  else
-    type = GDK_TYPE_PAINTABLE;
+  g_value_init (&value, GDK_TYPE_PAINTABLE);
+  if (!gdk_content_provider_get_value (content, &value, NULL))
+    return;

-  gdk_clipboard_read_value_async (clipboard, 
-                                  type,
-                                  G_PRIORITY_DEFAULT,
-                                  NULL,
-                                  paste_image_cb,
-                                  g_object_ref (widget));
+  paintable = GDK_PAINTABLE (g_value_get_object (&value));
+  gtk_image_set_from_paintable (GTK_IMAGE (demo->image), paintable);
+  g_value_unset (&value);
 }

 static void
--- a/demos/gtk-demo/demolayout.c
+++ b/demos/gtk-demo/demolayout.c
@@ -1,189 +0,0 @@
-#include "demolayout.h"
-
-struct _DemoLayout
-{
-  GtkLayoutManager parent_instance;
-
-  float position;
-  int pos[16];
-};
-
-struct _DemoLayoutClass
-{
-  GtkLayoutManagerClass parent_class;
-};
-
-G_DEFINE_TYPE (DemoLayout, demo_layout, GTK_TYPE_LAYOUT_MANAGER)
-
-static void
-demo_layout_measure (GtkLayoutManager *layout_manager,
-                     GtkWidget        *widget,
-                     GtkOrientation    orientation,
-                     int               for_size,
-                     int              *minimum,
-                     int              *natural,
-                     int              *minimum_baseline,
-                     int              *natural_baseline)
-{
-  GtkWidget *child;
-  int minimum_size = 0;
-  int natural_size = 0;
-
-  for (child = gtk_widget_get_first_child (widget);
-       child != NULL;
-       child = gtk_widget_get_next_sibling (child))
-    {
-      int child_min = 0, child_nat = 0;
-
-      if (!gtk_widget_should_layout (child))
-        continue;
-
-      gtk_widget_measure (child, orientation, -1,
-                          &child_min, &child_nat,
-                          NULL, NULL);
-      minimum_size = MAX (minimum_size, child_min);
-      natural_size = MAX (natural_size, child_nat);
-    }
-
-  /* A back-of-a-napkin calculation to reserve enough
-   * space for arranging 16 children in a circle.
-   */
-  *minimum = 16 * minimum_size / G_PI + minimum_size;
-  *natural = 16 * natural_size / G_PI + natural_size;
-}
-
-static void
-demo_layout_allocate (GtkLayoutManager *layout_manager,
-                      GtkWidget        *widget,
-                      int               width,
-                      int               height,
-                      int               baseline)
-{
-  DemoLayout *self = DEMO_LAYOUT (layout_manager);
-  GtkWidget *child;
-  int i;
-  int child_width = 0;
-  int child_height = 0;
-  int x0, y0;
-  float r;
-  float t;
-
-  t = self->position;
-
-  for (child = gtk_widget_get_first_child (widget);
-       child != NULL;
-       child = gtk_widget_get_next_sibling (child))
-    {
-      GtkRequisition child_req;
-
-      if (!gtk_widget_should_layout (child))
-        continue;
-
-      gtk_widget_get_preferred_size (child, &child_req, NULL);
-
-      child_width = MAX (child_width, child_req.width);
-      child_height = MAX (child_height, child_req.height);
-    }
-
-  /* the center of our layout */
-  x0 = (width / 2);
-  y0 = (height / 2);
-
-  /* the radius for our circle of children */
-  r = 8 * child_width / G_PI;
-
-  for (child = gtk_widget_get_first_child (widget), i = 0;
-       child != NULL;
-       child = gtk_widget_get_next_sibling (child), i++)
-    {
-      GtkRequisition child_req;
-      float a = self->pos[i] * G_PI / 8;
-      int gx, gy;
-      int cx, cy;
-      int x, y;
-
-      if (!gtk_widget_should_layout (child))
-        continue;
-
-      gtk_widget_get_preferred_size (child, &child_req, NULL);
-
-      /* The grid position of child. */
-      gx = x0 + (i % 4 - 2) * child_width;
-      gy = y0 + (i / 4 - 2) * child_height;
-
-      /* The circle position of child. Note that we
-       * are adjusting the position by half the child size
-       * to place the center of child on a centered circle.
-       * This assumes that the children don't use align flags
-       * or uneven margins that would shift the center.
-       */
-      cx = x0 + sin (a) * r - child_req.width / 2;
-      cy = y0 + cos (a) * r - child_req.height / 2;
-
-      /* we interpolate between the two layouts according to
-       * the position value that has been set on the layout.
-       */
-      x = t * cx + (1 - t) * gx;
-      y = t * cy + (1 - t) * gy;
-
-      gtk_widget_size_allocate (child,
-                                &(const GtkAllocation){ x, y, child_width, child_height},
-                                -1);
-    }
-}
-
-static GtkSizeRequestMode
-demo_layout_get_request_mode (GtkLayoutManager *layout_manager,
-                              GtkWidget        *widget)
-{
-  return GTK_SIZE_REQUEST_CONSTANT_SIZE;
-}
-
-static void
-demo_layout_class_init (DemoLayoutClass *klass)
-{
-  GtkLayoutManagerClass *layout_class = GTK_LAYOUT_MANAGER_CLASS (klass);
-
-  layout_class->get_request_mode = demo_layout_get_request_mode;
-  layout_class->measure = demo_layout_measure;
-  layout_class->allocate = demo_layout_allocate;
-}
-
-static void
-demo_layout_init (DemoLayout *self)
-{
-  int i;
-
-  for (i = 0; i < 16; i++)
-    self->pos[i] = i;
-}
-
-GtkLayoutManager *
-demo_layout_new (void)
-{
-  return g_object_new (DEMO_TYPE_LAYOUT, NULL);
-}
-
-void
-demo_layout_set_position (DemoLayout *layout,
-                          float       position)
-{
-  layout->position = position;
-}
-
-/* Shuffle the circle positions of the children.
- * Should be called when we are in the grid layout.
- */
-void
-demo_layout_shuffle (DemoLayout *layout)
-{
-  int i, j, tmp;
-
-  for (i = 0; i < 16; i++)
-    {
-      j = g_random_int_range (0, i + 1);
-      tmp = layout->pos[i];
-      layout->pos[i] = layout->pos[j];
-      layout->pos[j] = tmp;
-    }
-}
--- a/demos/gtk-demo/demolayout.h
+++ b/demos/gtk-demo/demolayout.h
@@ -1,13 +0,0 @@
-#pragma once
-
-#include <gtk/gtk.h>
-
-#define DEMO_TYPE_LAYOUT (demo_layout_get_type ())
-
-G_DECLARE_FINAL_TYPE (DemoLayout, demo_layout, DEMO, LAYOUT, GtkLayoutManager)
-
-GtkLayoutManager * demo_layout_new          (void);
-
-void               demo_layout_set_position (DemoLayout *layout,
-                                             float       position);
-void               demo_layout_shuffle      (DemoLayout *layout);
--- a/demos/gtk-demo/demotaggedentry.c
+++ b/demos/gtk-demo/demotaggedentry.c
@@ -23,12 +23,14 @@
 #include "demotaggedentry.h"

 #include <gtk/gtk.h>
+#include <gtk/gtk-a11y.h>

 struct _DemoTaggedEntry
 {
  GtkWidget parent_instance;

-  GtkWidget *text;
+  GtkWidget *box;
+  GtkWidget *entry;
 };

 struct _DemoTaggedEntryClass
@@ -44,38 +46,28 @@ G_DEFINE_TYPE_WITH_CODE (DemoTaggedEntry, demo_tagged_entry, GTK_TYPE_WIDGET,
 static void
 demo_tagged_entry_init (DemoTaggedEntry *entry)
 {
-  GtkCssProvider *provider;
+  entry->box = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 0);
+  gtk_widget_set_parent (entry->box, GTK_WIDGET (entry));

-  entry->text = gtk_text_new ();
-  gtk_widget_set_hexpand (entry->text, TRUE);
-  gtk_widget_set_vexpand (entry->text, TRUE);
-  gtk_widget_set_parent (entry->text, GTK_WIDGET (entry));
+  entry->entry = gtk_text_new ();
+  gtk_widget_set_hexpand (entry->entry, TRUE);
+  gtk_widget_set_vexpand (entry->entry, TRUE);
+  gtk_widget_set_hexpand (entry->box, FALSE);
+  gtk_widget_set_vexpand (entry->box, FALSE);
+  gtk_box_append (GTK_BOX (entry->box), entry->entry);
  gtk_editable_init_delegate (GTK_EDITABLE (entry));
-  gtk_editable_set_width_chars (GTK_EDITABLE (entry->text), 6);
-  gtk_editable_set_max_width_chars (GTK_EDITABLE (entry->text), 6);
-  gtk_widget_add_css_class (GTK_WIDGET (entry), "tagged");
-
-  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_dispose (GObject *object)
 {
  DemoTaggedEntry *entry = DEMO_TAGGED_ENTRY (object);
-  GtkWidget *child;

-  if (entry->text)
+  if (entry->entry)
    gtk_editable_finish_delegate (GTK_EDITABLE (entry));

-  while ((child = gtk_widget_get_first_child (GTK_WIDGET (entry))))
-    gtk_widget_unparent (child);
-
-  entry->text = NULL;
+  g_clear_pointer (&entry->entry, gtk_widget_unparent);
+  g_clear_pointer (&entry->box, gtk_widget_unparent);

  G_OBJECT_CLASS (demo_tagged_entry_parent_class)->dispose (object);
 }
@@ -109,7 +101,7 @@ demo_tagged_entry_grab_focus (GtkWidget *widget)
 {
  DemoTaggedEntry *entry = DEMO_TAGGED_ENTRY (widget);

-  return gtk_widget_grab_focus (entry->text);
+  return gtk_widget_grab_focus (entry->entry);
 }

 static void
@@ -126,15 +118,15 @@ demo_tagged_entry_class_init (DemoTaggedEntryClass *klass)

  gtk_editable_install_properties (object_class, 1);

-  gtk_widget_class_set_layout_manager_type (widget_class, GTK_TYPE_BOX_LAYOUT);
+  gtk_widget_class_set_layout_manager_type (widget_class, GTK_TYPE_BIN_LAYOUT);
+  gtk_widget_class_set_accessible_type (widget_class, GTK_TYPE_ENTRY_ACCESSIBLE);
  gtk_widget_class_set_css_name (widget_class, "entry");
-  gtk_widget_class_set_accessible_role (widget_class, GTK_ACCESSIBLE_ROLE_TEXT_BOX);
 }

 static GtkEditable *
 demo_tagged_entry_get_delegate (GtkEditable *editable)
 {
-  return GTK_EDITABLE (DEMO_TAGGED_ENTRY (editable)->text);
+  return GTK_EDITABLE (DEMO_TAGGED_ENTRY (editable)->entry);
 }

 static void
@@ -155,7 +147,7 @@ demo_tagged_entry_add_tag (DemoTaggedEntry *entry,
 {
  g_return_if_fail (DEMO_IS_TAGGED_ENTRY (entry));

-  gtk_widget_set_parent (tag, GTK_WIDGET (entry));
+  gtk_box_append (GTK_BOX (entry->box), tag);
 }

 void
@@ -165,7 +157,10 @@ demo_tagged_entry_insert_tag_after (DemoTaggedEntry *entry,
 {
  g_return_if_fail (DEMO_IS_TAGGED_ENTRY (entry));

-  gtk_widget_insert_after (tag, GTK_WIDGET (entry), sibling);
+  if (sibling == NULL)
+    gtk_box_append (GTK_BOX (entry->box), tag);
+  else
+    gtk_box_insert_child_after (GTK_BOX (entry->box), tag, sibling);
 }

 void
@@ -174,7 +169,7 @@ demo_tagged_entry_remove_tag (DemoTaggedEntry *entry,
 {
  g_return_if_fail (DEMO_IS_TAGGED_ENTRY (entry));

-  gtk_widget_unparent (tag);
+  gtk_box_remove (GTK_BOX (entry->box), tag);
 }

 struct _DemoTaggedEntryTag
@@ -224,6 +219,7 @@ static void
 demo_tagged_entry_tag_init (DemoTaggedEntryTag *tag)
 {
  GtkGesture *gesture;
+  GtkCssProvider *provider;

  tag->box = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 0);
  gtk_widget_set_parent (tag->box, GTK_WIDGET (tag));
@@ -233,6 +229,13 @@ demo_tagged_entry_tag_init (DemoTaggedEntryTag *tag)
  gesture = gtk_gesture_click_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
--- a/demos/gtk-demo/demowidget.c
+++ b/demos/gtk-demo/demowidget.c
@@ -1,121 +0,0 @@
-#include "demowidget.h"
-#include "demolayout.h"
-
-/* parent widget */
-
-struct _DemoWidget
-{
-  GtkWidget parent_instance;
-
-  gboolean backward; /* whether we go 0 -> 1 or 1 -> 0 */
-  gint64 start_time; /* time the transition started */
-  guint tick_id;     /* our tick cb */
-};
-
-struct _DemoWidgetClass
-{
-  GtkWidgetClass parent_class;
-};
-
-G_DEFINE_TYPE (DemoWidget, demo_widget, GTK_TYPE_WIDGET)
-
-/* The widget is controlling the transition by calling
- * demo_layout_set_position() in a tick callback.
- *
- * We take half a second to go from one layout to the other.
- */
-
-#define DURATION (0.5 * G_TIME_SPAN_SECOND)
-
-static gboolean
-transition (GtkWidget     *widget,
-            GdkFrameClock *frame_clock,
-            gpointer       data)
-{
-  DemoWidget *self = DEMO_WIDGET (widget);
-  DemoLayout *demo_layout = DEMO_LAYOUT (gtk_widget_get_layout_manager (widget));
-  gint64 now = g_get_monotonic_time ();
-
-  gtk_widget_queue_allocate (widget);
-
-  if (self->backward)
-    demo_layout_set_position (demo_layout, 1.0 - (now - self->start_time) / DURATION);
-  else
-    demo_layout_set_position (demo_layout, (now - self->start_time) / DURATION);
-
-  if (now - self->start_time >= DURATION)
-    {
-      self->backward = !self->backward;
-      demo_layout_set_position (demo_layout, self->backward ? 1.0 : 0.0);
-      /* keep things interesting by shuffling the positions */
-      if (!self->backward)
-        demo_layout_shuffle (demo_layout);
-      self->tick_id = 0;
-
-      return G_SOURCE_REMOVE;
-    }
-
-  return G_SOURCE_CONTINUE;
-}
-
-static void
-clicked (GtkGestureClick *gesture,
-         guint            n_press,
-         double           x,
-         double           y,
-         gpointer         data)
-{
-  DemoWidget *self = data;
-
-  if (self->tick_id != 0)
-    return;
-
-  self->start_time = g_get_monotonic_time ();
-  self->tick_id = gtk_widget_add_tick_callback (GTK_WIDGET (self), transition, NULL, NULL);
-}
-
-static void
-demo_widget_init (DemoWidget *self)
-{
-  GtkGesture *gesture;
-
-  gesture = gtk_gesture_click_new ();
-  g_signal_connect (gesture, "pressed", G_CALLBACK (clicked), self);
-  gtk_widget_add_controller (GTK_WIDGET (self), GTK_EVENT_CONTROLLER (gesture));
-}
-
-static void
-demo_widget_dispose (GObject *object)
-{
-  GtkWidget *child;
-
-  while ((child = gtk_widget_get_first_child (GTK_WIDGET (object))))
-    gtk_widget_unparent (child);
-
-  G_OBJECT_CLASS (demo_widget_parent_class)->dispose (object);
-}
-
-static void
-demo_widget_class_init (DemoWidgetClass *class)
-{
-  GObjectClass *object_class = G_OBJECT_CLASS (class);
-  GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
-
-  object_class->dispose = demo_widget_dispose;
-
-  /* here is where we use our custom layout manager */
-  gtk_widget_class_set_layout_manager_type (widget_class, DEMO_TYPE_LAYOUT);
-}
-
-GtkWidget *
-demo_widget_new (void)
-{
-  return g_object_new (DEMO_TYPE_WIDGET, NULL);
-}
-
-void
-demo_widget_add_child (DemoWidget *self,
-                       GtkWidget  *child)
-{
-  gtk_widget_set_parent (child, GTK_WIDGET (self));
-}
--- a/demos/gtk-demo/demowidget.h
+++ b/demos/gtk-demo/demowidget.h
@@ -1,11 +0,0 @@
-#pragma once
-
-#include <gtk/gtk.h>
-
-#define DEMO_TYPE_WIDGET (demo_widget_get_type ())
-G_DECLARE_FINAL_TYPE (DemoWidget, demo_widget, DEMO, WIDGET, GtkWidget)
-
-GtkWidget * demo_widget_new       (void);
-
-void        demo_widget_add_child (DemoWidget *self,
-                                   GtkWidget  *child);
--- a/demos/gtk-demo/dialog.c
+++ b/demos/gtk-demo/dialog.c
@@ -1,5 +1,4 @@
 /* Dialogs
- * #Keywords: GtkMessageDialog
 *
 * Dialogs are used to pop up transient windows for information
 * and user feedback.
--- a/demos/gtk-demo/dnd.c
+++ b/demos/gtk-demo/dnd.c
@@ -1,12 +1,8 @@
 /* Drag-and-Drop
- * #Keywords: dnd, menu, popover, gesture
 *
 * This demo shows dragging colors and widgets.
 * The items in this demo can be moved, recolored
 * and rotated.
- *
- * The demo also has an example for creating a
- * menu-like popover without using a menu model.
 */

 #include <gtk/gtk.h>
@@ -113,9 +109,12 @@ apply_transform (CanvasItem *item)
  y = gtk_widget_get_allocated_height (item->label) / 2.0;
  item->r = sqrt (x*x + y*y);

-  transform = gsk_transform_translate (NULL, &(graphene_point_t) { item->r, item->r });
-  transform = gsk_transform_rotate (transform, item->angle + item->delta);
-  transform = gsk_transform_translate (transform, &(graphene_point_t) { -x, -y });
+  transform = gsk_transform_translate (
+                 gsk_transform_rotate (
+                   gsk_transform_translate (NULL,
+                                            &(graphene_point_t) { item->r, item->r }),
+                   item->angle + item->delta),
+                 &(graphene_point_t) { - x, - y });

  gtk_fixed_set_child_transform (GTK_FIXED (item->fixed), item->label, transform);
  gsk_transform_unref (transform);
@@ -154,30 +153,6 @@ click_done (GtkGesture *gesture)
    gtk_widget_insert_after (item, canvas, last_child);
 }

-static gboolean
-theme_is_dark (void)
-{
-  GtkSettings *settings;
-  char *theme;
-  gboolean prefer_dark;
-  gboolean dark;
-
-  settings = gtk_settings_get_default ();
-  g_object_get (settings,
-                "gtk-theme-name", &theme,
-                "gtk-application-prefer-dark-theme", &prefer_dark,
-                NULL);
-
-  if ((strcmp (theme, "Adwaita") == 0 && prefer_dark) || strcmp (theme, "HighContrastInverse") == 0)
-    dark = TRUE;
-  else
-    dark = FALSE;
-
-  g_free (theme);
-
-  return dark;
-}
-
 static void
 canvas_item_init (CanvasItem *item)
 {
@@ -205,11 +180,7 @@ canvas_item_init (CanvasItem *item)
  gtk_widget_set_name (item->label, id);
  g_free (id);

-  if (theme_is_dark ())
-    gdk_rgba_parse (&rgba, "blue");
-  else
-    gdk_rgba_parse (&rgba, "yellow");
-
+  gdk_rgba_parse (&rgba, "yellow");
  set_color (item, &rgba);

  item->angle = 0;
@@ -567,6 +538,7 @@ canvas_new (void)
  canvas = gtk_fixed_new ();
  gtk_widget_set_hexpand (canvas, TRUE);
  gtk_widget_set_vexpand (canvas, TRUE);
+  gtk_widget_add_css_class (canvas, "frame");

  source = gtk_drag_source_new ();
  gtk_drag_source_set_actions (source, GDK_ACTION_MOVE);
@@ -764,8 +736,6 @@ do_dnd (GtkWidget *do_widget)
          y += 100;
        }

-      gtk_box_append (GTK_BOX (box), gtk_separator_new (GTK_ORIENTATION_HORIZONTAL));
-
      sw = gtk_scrolled_window_new ();
      gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (sw),
                                      GTK_POLICY_AUTOMATIC,
--- a/demos/gtk-demo/drawingarea.c
+++ b/demos/gtk-demo/drawingarea.c
@@ -1,5 +1,4 @@
 /* Drawing Area
- * #Keywords: GtkDrawingArea
 *
 * GtkDrawingArea is a blank area where you can draw custom displays
 * of various kinds.
@@ -311,7 +310,6 @@ do_drawingarea (GtkWidget *do_widget)
      gtk_window_set_display (GTK_WINDOW (window),
                              gtk_widget_get_display (do_widget));
      gtk_window_set_title (GTK_WINDOW (window), "Drawing Area");
-      gtk_window_set_default_size (GTK_WINDOW (window), 250, -1);

      g_signal_connect (window, "destroy",
                        G_CALLBACK (close_window), NULL);
@@ -326,8 +324,9 @@ do_drawingarea (GtkWidget *do_widget)
      /*
       * Create the groups area
       */
-      label = gtk_label_new ("Knockout groups");
-      gtk_widget_add_css_class (label, "heading");
+      label = gtk_label_new (NULL);
+      gtk_label_set_markup (GTK_LABEL (label),
+                            "<u>Knockout groups</u>");
      gtk_box_append (GTK_BOX (vbox), label);

      frame = gtk_frame_new (NULL);
@@ -344,8 +343,9 @@ do_drawingarea (GtkWidget *do_widget)
       * Create the scribble area
       */

-      label = gtk_label_new ("Scribble area");
-      gtk_widget_add_css_class (label, "heading");
+      label = gtk_label_new (NULL);
+      gtk_label_set_markup (GTK_LABEL (label),
+                            "<u>Scribble area</u>");
      gtk_box_append (GTK_BOX (vbox), label);

      frame = gtk_frame_new (NULL);
--- a/demos/gtk-demo/dropdown.c
+++ b/demos/gtk-demo/dropdown.c
@@ -1,16 +1,17 @@
-/* Lists/Selections
+/* Drop Downs
 *
 * The GtkDropDown widget is a modern alternative to GtkComboBox.
 * It uses list models instead of tree models, and the content is
 * displayed using widgets instead of cell renderers.
 *
- * This example also shows a custom widget that can replace
- * GtkEntryCompletion or GtkComboBoxText. It is not currently
- * part of GTK.
+ * The examples here demonstrate how to use different kinds of
+ * list models with GtkDropDown, how to use search and how to
+ * display the selected item differently from the presentation
+ * in the popup.
 */

 #include <gtk/gtk.h>
-#include "suggestionentry.h"
+

 #define STRING_TYPE_HOLDER (string_holder_get_type ())
 G_DECLARE_FINAL_TYPE (StringHolder, string_holder, STRING, HOLDER, GObject)
@@ -64,22 +65,18 @@ strings_setup_item_single_line (GtkSignalListItemFactory *factory,
                                GtkListItem              *item)
 {
  GtkWidget *box, *image, *title;
-  GtkWidget *checkmark;

  box = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 10);

  image = gtk_image_new ();
  title = gtk_label_new ("");
  gtk_label_set_xalign (GTK_LABEL (title), 0.0);
-  checkmark = gtk_image_new_from_icon_name ("object-select-symbolic");

  gtk_box_append (GTK_BOX (box), image);
  gtk_box_append (GTK_BOX (box), title);
-  gtk_box_append (GTK_BOX (box), checkmark);

  g_object_set_data (G_OBJECT (item), "title", title);
  g_object_set_data (G_OBJECT (item), "image", image);
-  g_object_set_data (G_OBJECT (item), "checkmark", checkmark);

  gtk_list_item_set_child (item, box);
 }
@@ -89,7 +86,6 @@ strings_setup_item_full (GtkSignalListItemFactory *factory,
                         GtkListItem              *item)
 {
  GtkWidget *box, *box2, *image, *title, *description;
-  GtkWidget *checkmark;

  image = gtk_image_new ();
  title = gtk_label_new ("");
@@ -97,7 +93,6 @@ strings_setup_item_full (GtkSignalListItemFactory *factory,
  description = gtk_label_new ("");
  gtk_label_set_xalign (GTK_LABEL (description), 0.0);
  gtk_widget_add_css_class (description, "dim-label");
-  checkmark = gtk_image_new_from_icon_name ("object-select-symbolic");

  box = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 10);
  box2 = gtk_box_new (GTK_ORIENTATION_VERTICAL, 2);
@@ -106,48 +101,26 @@ strings_setup_item_full (GtkSignalListItemFactory *factory,
  gtk_box_append (GTK_BOX (box), box2);
  gtk_box_append (GTK_BOX (box2), title);
  gtk_box_append (GTK_BOX (box2), description);
-  gtk_box_append (GTK_BOX (box), checkmark);

  g_object_set_data (G_OBJECT (item), "title", title);
  g_object_set_data (G_OBJECT (item), "image", image);
  g_object_set_data (G_OBJECT (item), "description", description);
-  g_object_set_data (G_OBJECT (item), "checkmark", checkmark);

  gtk_list_item_set_child (item, box);
 }

-static void
-selected_item_changed (GtkDropDown *dropdown,
-                       GParamSpec  *pspec,
-                       GtkListItem *item)
-{
-  GtkWidget *checkmark;
-
-  checkmark = g_object_get_data (G_OBJECT (item), "checkmark");
-
-  if (gtk_drop_down_get_selected_item (dropdown) == gtk_list_item_get_item (item))
-    gtk_widget_set_opacity (checkmark, 1.0);
-  else
-    gtk_widget_set_opacity (checkmark, 0.0);
-}
-
 static void
 strings_bind_item (GtkSignalListItemFactory *factory,
-                   GtkListItem              *item,
-                   gpointer                  data)
+                    GtkListItem              *item)
 {
-  GtkDropDown *dropdown = data;
  GtkWidget *image, *title, *description;
-  GtkWidget *checkmark;
  StringHolder *holder;
-  GtkWidget *popup;

  holder = gtk_list_item_get_item (item);

  title = g_object_get_data (G_OBJECT (item), "title");
  image = g_object_get_data (G_OBJECT (item), "image");
  description = g_object_get_data (G_OBJECT (item), "description");
-  checkmark = g_object_get_data (G_OBJECT (item), "checkmark");

  gtk_label_set_label (GTK_LABEL (title), holder->title);
  if (image)
@@ -160,43 +133,19 @@ strings_bind_item (GtkSignalListItemFactory *factory,
      gtk_label_set_label (GTK_LABEL (description), holder->description);
      gtk_widget_set_visible (description , holder->description != NULL);
    }
-
-  popup = gtk_widget_get_ancestor (title, GTK_TYPE_POPOVER);
-  if (popup && gtk_widget_is_ancestor (popup, GTK_WIDGET (dropdown)))
-    {
-      gtk_widget_show (checkmark);
-      g_signal_connect (dropdown, "notify::selected-item",
-                        G_CALLBACK (selected_item_changed), item);
-      selected_item_changed (dropdown, NULL, item);
-    }
-  else
-    {
-      gtk_widget_hide (checkmark);
-    }
-}
-
-static void
-strings_unbind_item (GtkSignalListItemFactory *factory,
-                     GtkListItem              *list_item,
-                     gpointer                  data)
-{
-  GtkDropDown *dropdown = data;
-
-  g_signal_handlers_disconnect_by_func (dropdown, selected_item_changed, list_item);
 }

 static GtkListItemFactory *
-strings_factory_new (gpointer data, gboolean full)
+strings_factory_new (gboolean full)
 {
  GtkListItemFactory *factory;

  factory = gtk_signal_list_item_factory_new ();
  if (full)
-    g_signal_connect (factory, "setup", G_CALLBACK (strings_setup_item_full), data);
+    g_signal_connect (factory, "setup", G_CALLBACK (strings_setup_item_full), NULL);
  else
-    g_signal_connect (factory, "setup", G_CALLBACK (strings_setup_item_single_line), data);
-  g_signal_connect (factory, "bind", G_CALLBACK (strings_bind_item), data);
-  g_signal_connect (factory, "unbind", G_CALLBACK (strings_unbind_item), data);
+    g_signal_connect (factory, "setup", G_CALLBACK (strings_setup_item_single_line), NULL);
+  g_signal_connect (factory, "bind", G_CALLBACK (strings_bind_item), NULL);

  return factory;
 }
@@ -237,22 +186,19 @@ drop_down_new_from_strings (const char *const *titles,
  g_return_val_if_fail (descriptions == NULL || g_strv_length ((char **)icons) == g_strv_length ((char **)descriptions), NULL);

  model = strings_model_new (titles, icons, descriptions);
-  widget = g_object_new (GTK_TYPE_DROP_DOWN,
-                         "model", model,
-                         NULL);
-  g_object_unref (model);
-
-  factory = strings_factory_new (widget, FALSE);
+  factory = strings_factory_new (FALSE);
  if (icons != NULL || descriptions != NULL)
-    list_factory = strings_factory_new (widget, TRUE);
+    list_factory = strings_factory_new (TRUE);
  else
    list_factory = NULL;

-  g_object_set (widget,
-                "factory", factory,
-                "list-factory", list_factory,
-                NULL);
+  widget = g_object_new (GTK_TYPE_DROP_DOWN,
+                         "model", model,
+                         "factory", factory,
+                         "list-factory", list_factory,
+                         NULL);

+  g_object_unref (model);
  g_object_unref (factory);
  if (list_factory)
    g_object_unref (list_factory);
@@ -272,110 +218,13 @@ get_title (gpointer item)
  return g_strdup (STRING_HOLDER (item)->title);
 }

-static char *
-get_file_name (gpointer item)
-{
-  return g_strdup (g_file_info_get_display_name (G_FILE_INFO (item)));
-}
-
-static void
-setup_item (GtkSignalListItemFactory *factory,
-            GtkListItem              *item)
-{
-  GtkWidget *box;
-  GtkWidget *icon;
-  GtkWidget *label;
-
-  box = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 10);
-  icon = gtk_image_new ();
-  label = gtk_label_new ("");
-  gtk_label_set_xalign (GTK_LABEL (label), 0);
-  gtk_box_append (GTK_BOX (box), icon);
-  gtk_box_append (GTK_BOX (box), label);
-  gtk_list_item_set_child (item, box);
-}
-
-static void
-bind_item (GtkSignalListItemFactory *factory,
-           GtkListItem              *item)
-{
-  MatchObject *match = MATCH_OBJECT (gtk_list_item_get_item (item));
-  GFileInfo *info = G_FILE_INFO (match_object_get_item (match));
-  GtkWidget *box = gtk_list_item_get_child (item);
-  GtkWidget *icon = gtk_widget_get_first_child (box);
-  GtkWidget *label = gtk_widget_get_last_child (box);
-
-  gtk_image_set_from_gicon (GTK_IMAGE (icon), g_file_info_get_icon (info));
-  gtk_label_set_label (GTK_LABEL (label), g_file_info_get_display_name (info));
-}
-
-static void
-setup_highlight_item (GtkSignalListItemFactory *factory,
-                      GtkListItem              *item)
-{
-  GtkWidget *label;
-
-  label = gtk_label_new ("");
-  gtk_label_set_xalign (GTK_LABEL (label), 0);
-  gtk_list_item_set_child (item, label);
-}
-
-static void
-bind_highlight_item (GtkSignalListItemFactory *factory,
-                     GtkListItem              *item)
-{
-  MatchObject *obj;
-  GtkWidget *label;
-  PangoAttrList *attrs;
-  PangoAttribute *attr;
-  const char *str;
-
-  obj = MATCH_OBJECT (gtk_list_item_get_item (item));
-  label = gtk_list_item_get_child (item);
-
-  str = match_object_get_string (obj);
-
-  gtk_label_set_label (GTK_LABEL (label), str);
-  attrs = pango_attr_list_new ();
-  attr = pango_attr_weight_new (PANGO_WEIGHT_BOLD);
-  attr->start_index = match_object_get_match_start (obj);
-  attr->end_index = match_object_get_match_end (obj);
-  pango_attr_list_insert (attrs, attr);
-  gtk_label_set_attributes (GTK_LABEL (label), attrs);
-  pango_attr_list_unref (attrs);
-}
-
-static void
-match_func (MatchObject *obj,
-            const char  *search,
-            gpointer     user_data)
-{
-  char *tmp1, *tmp2;
-  char *p;
-
-  tmp1 = g_utf8_normalize (match_object_get_string (obj), -1, G_NORMALIZE_ALL);
-  tmp2 = g_utf8_normalize (search, -1, G_NORMALIZE_ALL);
-
-  if ((p = strstr (tmp1, tmp2)) != NULL)
-    match_object_set_match (obj,
-                            p - tmp1,
-                            (p - tmp1) + g_utf8_strlen (search, -1),
-                            1);
-  else
-    match_object_set_match (obj, 0, 0, 0);
-
-  g_free (tmp1);
-  g_free (tmp2);
-}
-
 GtkWidget *
 do_dropdown (GtkWidget *do_widget)
 {
  static GtkWidget *window = NULL;
-  GtkWidget *button, *box, *spin, *check, *hbox, *label, *entry;
+  GtkWidget *button, *box, *spin, *check;
  GListModel *model;
  GtkExpression *expression;
-  GtkListItemFactory *factory;
  const char * const times[] = { "1 minute", "2 minutes", "5 minutes", "20 minutes", NULL };
  const char * const many_times[] = {
    "1 minute", "2 minutes", "5 minutes", "10 minutes", "15 minutes", "20 minutes",
@@ -388,51 +237,24 @@ do_dropdown (GtkWidget *do_widget)
  const char * const device_descriptions[] = {
    "Built-in Audio", "Built-in audio", "Thinkpad Tunderbolt 3 Dock USB Audio", "Thinkpad Tunderbolt 3 Dock USB Audio", NULL
  };
-  char *cwd;
-  GFile *file;
-  GListModel *dir;
-  GtkStringList *strings;

  if (!window)
    {
      window = gtk_window_new ();
      gtk_window_set_display (GTK_WINDOW (window),
                              gtk_widget_get_display (do_widget));
-      gtk_window_set_title (GTK_WINDOW (window), "Selections");
+      gtk_window_set_title (GTK_WINDOW (window), "Drop Downs");
      gtk_window_set_resizable (GTK_WINDOW (window), FALSE);
      g_object_add_weak_pointer (G_OBJECT (window), (gpointer *)&window);

-      hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 20);
-
-      gtk_widget_set_margin_start (hbox, 20);
-      gtk_widget_set_margin_end (hbox, 20);
-      gtk_widget_set_margin_top (hbox, 20);
-      gtk_widget_set_margin_bottom (hbox, 20);
-      gtk_window_set_child (GTK_WINDOW (window), hbox);
-
      box = gtk_box_new (GTK_ORIENTATION_VERTICAL, 10);
-      gtk_box_append (GTK_BOX (hbox), box);
+      gtk_widget_set_margin_start (box, 10);
+      gtk_widget_set_margin_end (box, 10);
+      gtk_widget_set_margin_top (box, 10);
+      gtk_widget_set_margin_bottom (box, 10);
+      gtk_window_set_child (GTK_WINDOW (window), box);

-      label = gtk_label_new ("Dropdowns");
-      gtk_widget_add_css_class (label, "title-4");
-      gtk_box_append (GTK_BOX (box), label);
-
-      /* A basic dropdown */
-      button = drop_down_new_from_strings (times, NULL, NULL);
-      gtk_box_append (GTK_BOX (box), button);
-
-      /* A dropdown using an expression to obtain strings */
-      button = drop_down_new_from_strings (many_times, NULL, NULL);
-      gtk_drop_down_set_enable_search (GTK_DROP_DOWN (button), TRUE);
-      expression = gtk_cclosure_expression_new (G_TYPE_STRING, NULL,
-                                                0, NULL,
-                                                (GCallback)get_title,
-                                                NULL, NULL);
-      gtk_drop_down_set_expression (GTK_DROP_DOWN (button), expression);
-      gtk_expression_unref (expression);
-      gtk_box_append (GTK_BOX (box), button);
-
-      button = gtk_drop_down_new (NULL, NULL);
+      button = gtk_drop_down_new ();

      model = G_LIST_MODEL (pango_cairo_font_map_get_default ());
      gtk_drop_down_set_model (GTK_DROP_DOWN (button), model);
@@ -448,118 +270,30 @@ do_dropdown (GtkWidget *do_widget)

      spin = gtk_spin_button_new_with_range (-1, g_list_model_get_n_items (G_LIST_MODEL (model)), 1);
      gtk_widget_set_halign (spin, GTK_ALIGN_START);
-      gtk_widget_set_margin_start (spin, 20);
      g_object_bind_property  (button, "selected", spin, "value", G_BINDING_SYNC_CREATE | G_BINDING_BIDIRECTIONAL);
      gtk_box_append (GTK_BOX (box), spin);

      check = gtk_check_button_new_with_label ("Enable search");
-      gtk_widget_set_margin_start (check, 20);
      g_object_bind_property  (button, "enable-search", check, "active", G_BINDING_SYNC_CREATE | G_BINDING_BIDIRECTIONAL);
      gtk_box_append (GTK_BOX (box), check);

      g_object_unref (model);

-      /* A dropdown with a separate list factory */
-      button = drop_down_new_from_strings (device_titles, device_icons, device_descriptions);
+      button = drop_down_new_from_strings (times, NULL, NULL);
      gtk_box_append (GTK_BOX (box), button);

-      gtk_box_append (GTK_BOX (hbox), gtk_separator_new (GTK_ORIENTATION_VERTICAL));
-
-      box = gtk_box_new (GTK_ORIENTATION_VERTICAL, 10);
-      gtk_box_append (GTK_BOX (hbox), box);
-
-      label = gtk_label_new ("Suggestions");
-      gtk_widget_add_css_class (label, "title-4");
-      gtk_box_append (GTK_BOX (box), label);
-
-      /* A basic suggestion entry */
-      entry = suggestion_entry_new ();
-      g_object_set (entry, "placeholder-text", "Words with T or G…", NULL);
-      strings = gtk_string_list_new ((const char *[]){
-                                     "GNOME",
-                                     "gnominious",
-                                     "Gnomonic projection",
-                                     "total",
-                                     "totally",
-                                     "toto",
-                                     "tottery",
-                                     "totterer",
-                                     "Totten trust",
-                                     "totipotent",
-                                     "totipotency",
-                                     "totemism",
-                                     "totem pole",
-                                     "Totara",
-                                     "totalizer",
-                                     "totalizator",
-                                     "totalitarianism",
-                                     "total parenteral nutrition",
-                                     "total hysterectomy",
-                                     "total eclipse",
-                                     "Totipresence",
-                                     "Totipalmi",
-                                     "Tomboy",
-                                     "zombie",
-                                     NULL});
-      suggestion_entry_set_model (SUGGESTION_ENTRY (entry), G_LIST_MODEL (strings));
-      g_object_unref (strings);
-
-      gtk_box_append (GTK_BOX (box), entry);
-
-      /* A suggestion entry using a custom model, and no filtering */
-      entry = suggestion_entry_new ();
-
-      cwd = g_get_current_dir ();
-      file = g_file_new_for_path (cwd);
-      dir = G_LIST_MODEL (gtk_directory_list_new ("standard::display-name,standard::content-type,standard::icon,standard::size", file));
-      suggestion_entry_set_model (SUGGESTION_ENTRY (entry), dir);
-      g_object_unref (dir);
-      g_object_unref (file);
-      g_free (cwd);
-
+      button = drop_down_new_from_strings (many_times, NULL, NULL);
+      gtk_drop_down_set_enable_search (GTK_DROP_DOWN (button), TRUE);
      expression = gtk_cclosure_expression_new (G_TYPE_STRING, NULL,
                                                0, NULL,
-                                                (GCallback)get_file_name,
+                                                (GCallback)get_title,
                                                NULL, NULL);
-      suggestion_entry_set_expression (SUGGESTION_ENTRY (entry), expression);
+      gtk_drop_down_set_expression (GTK_DROP_DOWN (button), expression);
      gtk_expression_unref (expression);
+      gtk_box_append (GTK_BOX (box), button);

-      factory = gtk_signal_list_item_factory_new ();
-      g_signal_connect (factory, "setup", G_CALLBACK (setup_item), NULL);
-      g_signal_connect (factory, "bind", G_CALLBACK (bind_item), NULL);
-
-      suggestion_entry_set_factory (SUGGESTION_ENTRY (entry), factory);
-      g_object_unref (factory);
-
-      suggestion_entry_set_use_filter (SUGGESTION_ENTRY (entry), FALSE);
-      suggestion_entry_set_show_arrow (SUGGESTION_ENTRY (entry), TRUE);
-
-      gtk_box_append (GTK_BOX (box), entry);
-
-      /* A suggestion entry with match highlighting */
-      entry = suggestion_entry_new ();
-      g_object_set (entry, "placeholder-text", "Destination", NULL);
-
-      strings = gtk_string_list_new ((const char *[]){
-                                     "app-mockups",
-                                     "settings-mockups",
-                                     "os-mockups",
-                                     "software-mockups",
-                                     "mocktails",
-                                     NULL});
-      suggestion_entry_set_model (SUGGESTION_ENTRY (entry), G_LIST_MODEL (strings));
-      g_object_unref (strings);
-
-      gtk_box_append (GTK_BOX (box), entry);
-
-      suggestion_entry_set_match_func (SUGGESTION_ENTRY (entry), match_func, NULL, NULL);
-
-      factory = gtk_signal_list_item_factory_new ();
-      g_signal_connect (factory, "setup", G_CALLBACK (setup_highlight_item), NULL);
-      g_signal_connect (factory, "bind", G_CALLBACK (bind_highlight_item), NULL);
-      suggestion_entry_set_factory (SUGGESTION_ENTRY (entry), factory);
-      g_object_unref (factory);
-
+      button = drop_down_new_from_strings (device_titles, device_icons, device_descriptions);
+      gtk_box_append (GTK_BOX (box), button);
    }

  if (!gtk_widget_get_visible (window))
--- a/demos/gtk-demo/entry_completion.c
+++ b/demos/gtk-demo/entry_completion.c
@@ -78,11 +78,11 @@ do_entry_completion (GtkWidget *do_widget)
      gtk_window_set_resizable (GTK_WINDOW (window), FALSE);
      g_object_add_weak_pointer (G_OBJECT (window), (gpointer *)&window);

-      vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 12);
-      gtk_widget_set_margin_start (vbox, 18);
-      gtk_widget_set_margin_end (vbox, 18);
-      gtk_widget_set_margin_top (vbox, 18);
-      gtk_widget_set_margin_bottom (vbox, 18);
+      vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 5);
+      gtk_widget_set_margin_start (vbox, 5);
+      gtk_widget_set_margin_end (vbox, 5);
+      gtk_widget_set_margin_top (vbox, 5);
+      gtk_widget_set_margin_bottom (vbox, 5);
      gtk_window_set_child (GTK_WINDOW (window), vbox);

      label = gtk_label_new (NULL);
--- a/demos/gtk-demo/entry_undo.c
+++ b/demos/gtk-demo/entry_undo.c
@@ -27,16 +27,16 @@ do_entry_undo (GtkWidget *do_widget)
      gtk_window_set_resizable (GTK_WINDOW (window), FALSE);
      g_object_add_weak_pointer (G_OBJECT (window), (gpointer *)&window);

-      vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 12);
-      gtk_widget_set_margin_start (vbox, 18);
-      gtk_widget_set_margin_end (vbox, 18);
-      gtk_widget_set_margin_top (vbox, 18);
-      gtk_widget_set_margin_bottom (vbox, 18);
+      vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 5);
+      gtk_widget_set_margin_start (vbox, 5);
+      gtk_widget_set_margin_end (vbox, 5);
+      gtk_widget_set_margin_top (vbox, 5);
+      gtk_widget_set_margin_bottom (vbox, 5);
      gtk_window_set_child (GTK_WINDOW (window), vbox);

      label = gtk_label_new (NULL);
      gtk_label_set_markup (GTK_LABEL (label),
-                            "Use Control+z or Control+Shift+z to undo or redo changes");
+                            "Use Primary+z or Primary+Shift+z to undo or redo changes");
      gtk_box_append (GTK_BOX (vbox), label);

      /* Create our entry */
--- a/demos/gtk-demo/errorstates.c
+++ b/demos/gtk-demo/errorstates.c
@@ -1,124 +0,0 @@
-/* Error States
- *
- * GtkLabel and GtkEntry can indicate errors if you set the .error
- * style class on them.
- *
- * This examples shows how this can be used in a dialog for input validation.
- *
- * It also shows how pass callbacks and objects to GtkBuilder with
- * GtkBuilderScope and gtk_builder_expose_object().
- */
-
-#include <glib/gi18n.h>
-#include <gtk/gtk.h>
-
-static void
-validate_more_details (GtkEntry   *entry,
-                       GParamSpec *pspec,
-                       GtkEntry   *details)
-{
-  if (strlen (gtk_editable_get_text (GTK_EDITABLE (entry))) > 0 &&
-      strlen (gtk_editable_get_text (GTK_EDITABLE (details))) == 0)
-    {
-      gtk_widget_set_tooltip_text (GTK_WIDGET (entry), "Must have details first");
-      gtk_widget_add_css_class (GTK_WIDGET (entry), "error");
-    }
-  else
-    {
-      gtk_widget_set_tooltip_text (GTK_WIDGET (entry), "");
-      gtk_widget_remove_css_class (GTK_WIDGET (entry), "error");
-    }
-}
-
-static gboolean
-mode_switch_state_set (GtkSwitch *sw,
-                       gboolean   state,
-                       GtkWidget *scale)
-{
-  GtkWidget *label;
-
-  label = GTK_WIDGET (g_object_get_data (G_OBJECT (sw), "error_label"));
-
-  if (!state ||
-      (gtk_range_get_value (GTK_RANGE (scale)) > 50))
-    {
-      gtk_widget_hide (label);
-      gtk_switch_set_state (sw, state);
-    }
-  else
-    {
-      gtk_widget_show (label);
-    }
-
-  return TRUE;
-}
-
-static void
-level_scale_value_changed (GtkRange *range,
-                           GtkWidget *sw)
-{
-  GtkWidget *label;
-
-  label = GTK_WIDGET (g_object_get_data (G_OBJECT (sw), "error_label"));
-
-  if (gtk_switch_get_active (GTK_SWITCH (sw)) &&
-      !gtk_switch_get_state (GTK_SWITCH (sw)) &&
-      (gtk_range_get_value (range) > 50))
-    {
-      gtk_widget_hide (label);
-      gtk_switch_set_state (GTK_SWITCH (sw), TRUE);
-    }
-  else if (gtk_switch_get_state (GTK_SWITCH (sw)) &&
-          (gtk_range_get_value (range) <= 50))
-    {
-      gtk_switch_set_state (GTK_SWITCH (sw), FALSE);
-    }
-}
-
-GtkWidget *
-do_errorstates (GtkWidget *do_widget)
-{
-  static GtkWidget *window = NULL;
-
-  if (!window)
-    {
-      GtkWidget *toplevel;
-      GtkBuilder *builder;
-      GtkBuilderScope *scope;
-      GtkWidget *sw, *label;
-
-      toplevel = GTK_WIDGET (gtk_widget_get_root (do_widget));
-
-      scope = gtk_builder_cscope_new ();
-      gtk_builder_cscope_add_callback_symbols (GTK_BUILDER_CSCOPE (scope),
-              "validate_more_details", G_CALLBACK (validate_more_details),
-              "mode_switch_state_set", G_CALLBACK (mode_switch_state_set),
-              "level_scale_value_changed", G_CALLBACK (level_scale_value_changed),
-              NULL);
-
-      builder = gtk_builder_new ();
-      gtk_builder_set_scope (builder, scope);
-      gtk_builder_expose_object (builder, "toplevel", G_OBJECT (toplevel));
-      gtk_builder_add_from_resource (builder, "/errorstates/errorstates.ui", NULL);
-
-      window = GTK_WIDGET (gtk_builder_get_object (builder, "dialog"));
-
-      gtk_window_set_display (GTK_WINDOW (window),
-                              gtk_widget_get_display (do_widget));
-      g_object_add_weak_pointer (G_OBJECT (window), (gpointer *)&window);
-
-      sw = GTK_WIDGET (gtk_builder_get_object (builder, "mode_switch"));
-      label = GTK_WIDGET (gtk_builder_get_object (builder, "error_label"));
-      g_object_set_data (G_OBJECT (sw), "error_label", label);
-
-      g_object_unref (builder);
-      g_object_unref (scope);
-    }
-
-  if (!gtk_widget_get_visible (window))
-    gtk_widget_show (window);
-  else
-    gtk_window_destroy (GTK_WINDOW (window));
-
-  return window;
-}
--- a/demos/gtk-demo/errorstates.ui
+++ b/demos/gtk-demo/errorstates.ui
@@ -1,158 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<interface>
-  <object class="GtkDialog" id="dialog">
-    <property name="transient-for">toplevel</property>
-    <property name="modal">1</property>
-    <property name="resizable">0</property>
-    <property name="use-header-bar">1</property>
-    <property name="title" translatable="yes">Error States</property>
-    <property name="hide-on-close">1</property>
-    <child internal-child="content_area">
-      <object class="GtkBox">
-        <child>
-          <object class="GtkGrid">
-            <property name="row-spacing">10</property>
-            <property name="column-spacing">10</property>
-            <property name="margin-start">20</property>
-            <property name="margin-end">20</property>
-            <property name="margin-top">20</property>
-            <property name="margin-bottom">20</property>
-            <child>
-              <object class="GtkLabel">
-                <property name="halign">end</property>
-                <property name="valign">baseline</property>
-                <property name="label">_Details</property>
-                <property name="use-underline">1</property>
-                <property name="mnemonic-widget">details_entry</property>
-                <style>
-                  <class name="dim-label"/>
-                </style>
-                <layout>
-                  <property name="column">0</property>
-                  <property name="row">0</property>
-                </layout>
-              </object>
-            </child>
-            <child>
-              <object class="GtkEntry" id="details_entry">
-                <property name="valign">baseline</property>
-                <signal name="notify::text" handler="validate_more_details" object="more_details_entry" swapped="yes"/>
-                <layout>
-                  <property name="column">1</property>
-                  <property name="row">0</property>
-                  <property name="column-span">2</property>
-                </layout>
-              </object>
-            </child>
-            <child>
-              <object class="GtkLabel">
-                <property name="halign">end</property>
-                <property name="valign">baseline</property>
-                <property name="label">More D_etails</property>
-                <property name="use-underline">1</property>
-                <property name="mnemonic-widget">more_details_entry</property>
-                <style>
-                  <class name="dim-label"/>
-                </style>
-                <layout>
-                  <property name="column">0</property>
-                  <property name="row">1</property>
-                </layout>
-              </object>
-            </child>
-            <child>
-              <object class="GtkEntry" id="more_details_entry">
-                <property name="valign">baseline</property>
-                <signal name="notify::text" handler="validate_more_details" object="details_entry" swapped="no"/>
-                <layout>
-                  <property name="column">1</property>
-                  <property name="row">1</property>
-                  <property name="column-span">2</property>
-                </layout>
-              </object>
-            </child>
-            <child>
-              <object class="GtkLabel">
-                <property name="halign">end</property>
-                <property name="valign">baseline</property>
-                <property name="label">_Level</property>
-                <property name="use-underline">1</property>
-                <property name="mnemonic-widget">level_scale</property>
-                <style>
-                  <class name="dim-label"/>
-                </style>
-                <layout>
-                  <property name="column">0</property>
-                  <property name="row">2</property>
-                </layout>
-              </object>
-            </child>
-            <child>
-              <object class="GtkScale" id="level_scale">
-                <property name="valign">baseline</property>
-                <property name="draw-value">0</property>
-                <property name="adjustment">
-                  <object class="GtkAdjustment">
-                    <property name="upper">100</property>
-                    <property name="lower">0</property>
-                    <property name="value">50</property>
-                    <property name="step-increment">1</property>
-                    <property name="page-increment">10</property>
-                  </object>
-                </property>
-                <signal name="value-changed" handler="level_scale_value_changed" object="mode_switch" swapped="no"/>
-                <layout>
-                  <property name="column">1</property>
-                  <property name="row">2</property>
-                  <property name="column-span">2</property>
-                </layout>
-              </object>
-            </child>
-            <child>
-              <object class="GtkLabel">
-                <property name="halign">end</property>
-                <property name="valign">baseline</property>
-                <property name="label">_Mode</property>
-                <property name="use-underline">1</property>
-                <property name="mnemonic-widget">mode_switch</property>
-                <style>
-                  <class name="dim-label"/>
-                </style>
-                <layout>
-                  <property name="column">0</property>
-                  <property name="row">3</property>
-                </layout>
-              </object>
-            </child>
-            <child>
-              <object class="GtkSwitch" id="mode_switch">
-                <property name="halign">start</property>
-                <property name="valign">baseline</property>
-                <signal name="state-set" handler="mode_switch_state_set" object="level_scale" swapped="no"/>
-                <layout>
-                  <property name="column">1</property>
-                  <property name="row">3</property>
-                </layout>
-              </object>
-            </child>
-            <child>
-              <object class="GtkLabel" id="error_label">
-                <property name="visible">0</property>
-                <property name="halign">start</property>
-                <property name="valign">baseline</property>
-                <property name="label">Level too low</property>
-                <style>
-                  <class name="error"/>
-                </style>
-                <layout>
-                  <property name="column">2</property>
-                  <property name="row">3</property>
-                </layout>
-              </object>
-            </child>
-          </object>
-        </child>
-      </object>
-    </child>
-  </object>
-</interface>
--- a/demos/gtk-demo/expander.c
+++ b/demos/gtk-demo/expander.c
@@ -35,10 +35,6 @@ do_expander (GtkWidget *do_widget)
  GtkWidget *sw;
  GtkWidget *tv;
  GtkTextBuffer *buffer;
-  GtkTextIter start;
-  GtkTextIter end;
-  GtkTextTag *tag;
-  GdkPaintable *paintable;

  if (!window)
    {
@@ -68,25 +64,12 @@ do_expander (GtkWidget *do_widget)
                                      GTK_POLICY_NEVER,
                                      GTK_POLICY_AUTOMATIC);
      gtk_scrolled_window_set_propagate_natural_height (GTK_SCROLLED_WINDOW (sw), TRUE);
-      gtk_widget_set_vexpand (sw, TRUE);

      tv = gtk_text_view_new ();
-
-      g_object_set (tv,
-                    "left-margin", 10,
-                    "right-margin", 10,
-                    "top-margin", 10,
-                    "bottom-margin", 10,
-                    NULL);
-
      buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (tv));
      gtk_text_view_set_editable (GTK_TEXT_VIEW (tv), FALSE);
-      gtk_text_view_set_cursor_visible (GTK_TEXT_VIEW (tv), FALSE);
      gtk_text_view_set_wrap_mode (GTK_TEXT_VIEW (tv), GTK_WRAP_WORD);
-      gtk_text_view_set_pixels_above_lines (GTK_TEXT_VIEW (tv), 2);
-      gtk_text_view_set_pixels_below_lines (GTK_TEXT_VIEW (tv), 2);
-
-      gtk_text_buffer_set_text (buffer,
+      gtk_text_buffer_set_text (GTK_TEXT_BUFFER (buffer),
                                "Finally, the full story with all details. "
                                "And all the inside information, including "
                                "error codes, etc etc. Pages of information, "
@@ -94,22 +77,7 @@ do_expander (GtkWidget *do_widget)
                                "or even resize the window - it works !\n"
                                "A second paragraph will contain even more "
                                "innuendo, just to make you scroll down or "
-                                "resize the window.\n"
-                                "Do it already!\n", -1);
-
-      gtk_text_buffer_get_end_iter (buffer, &start);
-      paintable = GDK_PAINTABLE (gdk_texture_new_from_resource ("/cursors/images/gtk_logo_cursor.png"));
-      gtk_text_buffer_insert_paintable (buffer, &start, paintable);
-      g_object_unref (paintable);
-      gtk_text_iter_backward_char (&start);
-
-      gtk_text_buffer_get_end_iter (buffer, &end);
-      tag = gtk_text_buffer_create_tag (buffer, NULL,
-                                        "pixels-above-lines", 200,
-                                        "justification", GTK_JUSTIFY_RIGHT,
-                                        NULL);
-      gtk_text_buffer_apply_tag (buffer, tag, &start, &end);
-
+                                "resize the window. Do it already !", -1);
      gtk_scrolled_window_set_child (GTK_SCROLLED_WINDOW (sw), tv);
      gtk_expander_set_child (GTK_EXPANDER (expander), sw);
      gtk_box_append (GTK_BOX (area), expander);
--- a/demos/gtk-demo/filtermodel.c
+++ b/demos/gtk-demo/filtermodel.c
@@ -1,5 +1,4 @@
 /* Tree View/Filter Model
- * #Keywords: GtkTreeView
 *
 * This example demonstrates how GtkTreeModelFilter can be used not
 * just to show a subset of the rows, but also to compute columns
--- a/demos/gtk-demo/filtermodel.ui
+++ b/demos/gtk-demo/filtermodel.ui
@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <interface>
+  <requires lib="gtk+" version="3.16"/>
  <object class="GtkListStore" id="liststore1">
    <columns>
      <column type="gint"/>
@@ -44,9 +45,12 @@
            <attributes>
              <attribute name="weight" value="bold"></attribute>
            </attributes>
+            <accessibility>
+              <relation type="label-for" target="treeview1"/>
+            </accessibility>
            <layout>
-              <property name="column">0</property>
-              <property name="row">0</property>
+              <property name="left-attach">0</property>
+              <property name="top-attach">0</property>
            </layout>
          </object>
        </child>
@@ -79,9 +83,12 @@
                </child>
              </object>
            </child>
+            <accessibility>
+              <relation type="labelled-by" target="label1"/>
+            </accessibility>
            <layout>
-              <property name="column">0</property>
-              <property name="row">1</property>
+              <property name="left-attach">0</property>
+              <property name="top-attach">1</property>
            </layout>
          </object>
        </child>
@@ -126,9 +133,12 @@
                </child>
              </object>
            </child>
+            <accessibility>
+              <relation type="labelled-by" target="label2"/>
+            </accessibility>
            <layout>
-              <property name="column">1</property>
-              <property name="row">1</property>
+              <property name="left-attach">1</property>
+              <property name="top-attach">1</property>
            </layout>
          </object>
        </child>
@@ -139,9 +149,12 @@
            <attributes>
              <attribute name="weight" value="bold"></attribute>
            </attributes>
+            <accessibility>
+              <relation type="label-for" target="treeview2"/>
+            </accessibility>
            <layout>
-              <property name="column">1</property>
-              <property name="row">0</property>
+              <property name="left-attach">1</property>
+              <property name="top-attach">0</property>
            </layout>
          </object>
        </child>
@@ -152,9 +165,12 @@
            <attributes>
              <attribute name="weight" value="bold"></attribute>
            </attributes>
+            <accessibility>
+              <relation type="label-for" target="treeview3"/>
+            </accessibility>
            <layout>
-              <property name="column">0</property>
-              <property name="row">2</property>
+              <property name="left-attach">0</property>
+              <property name="top-attach">2</property>
            </layout>
          </object>
        </child>
@@ -181,9 +197,12 @@
                </child>
              </object>
            </child>
+            <accessibility>
+              <relation type="labelled-by" target="label3"/>
+            </accessibility>
            <layout>
-              <property name="column">0</property>
-              <property name="row">3</property>
+              <property name="left-attach">0</property>
+              <property name="top-attach">3</property>
            </layout>
          </object>
        </child>
--- a/Show More
+++ b/Show More