gtk-demo: Rewrite the text mask demo

Use GtkSnapshot and GskPath instead of cairo for this.

.clang-format

@@ -1,10 +1,9 @@
-# See https://www.apertis.org/policies/coding_conventions/#code-formatting
+# See https://wiki.apertis.org/Guidelines/Coding_conventions#Code_formatting
 BasedOnStyle: GNU
 AlwaysBreakAfterDefinitionReturnType: All
 BreakBeforeBinaryOperators: None
 BinPackParameters: false
 SpaceAfterCStyleCast: true
-PointerAlignment: Right
 # Our column limit is actually 80, but setting that results in clang-format
 # making a lot of dubious hanging-indent choices; disable it and assume the
 # developer will line wrap appropriately. clang-format will still check

.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

.flake8

@@ -1,2 +0,0 @@
-[flake8]
-ignore = E501

.gitignore

@@ -1,2 +1 @@
 /subprojects/*/
-.flatpak-builder/

.gitlab-ci.yml

@@ -3,12 +3,10 @@ include:
     file: 'flatpak/flatpak_ci_initiative.yml'
 
 stages:
-  - check
   - build
   - analysis
   - docs
   - flatpak
-  - publish
   - deploy
 
 .cache-paths: &cache-paths
@@ -22,40 +20,25 @@ stages:
 
 # Common variables
 variables:
-  COMMON_MESON_FLAGS: "-Dwerror=true -Dcairo:werror=false -Dgi-docgen:werror=false -Dgraphene:werror=false -Dlibepoxy:werror=false -Dlibsass:werror=false -Dpango:werror=false -Dsassc:werror=false -Dgdk-pixbuf:werror=false -Dglib:werror=false -Dlibcloudproviders:werror=false -Dlibpng:werror=false -Dlibtiff:werror=false -Dsysprof:werror=false -Dwayland-protocols:werror=false -Dharfbuzz:werror=false -Dfreetype2:werror=false -Dfontconfig:werror=false -Dfribidi:werror=false -Dlibffi:werror=false -Dlibjpeg-turbo:werror=false -Dmutest:werror=false -Dpixman:werror=false -Dproxy-libintl:werror=false"
+  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 -Dbuild-testsuite=true -Dintrospection=enabled"
+  FEATURE_FLAGS: "-Dvulkan=enabled -Dcloudproviders=enabled"
   MESON_TEST_TIMEOUT_MULTIPLIER: 3
-  MESON_TEST_MAX_PROCESSES: 8
-  FEDORA_IMAGE: "registry.gitlab.gnome.org/gnome/gtk/fedora:v52"
+  FEDORA_IMAGE: "registry.gitlab.gnome.org/gnome/gtk/fedora:v25"
+  FLATPAK_IMAGE: "registry.gitlab.gnome.org/gnome/gnome-runtime-images/gnome:master"
+  DOCS_IMAGE: "registry.gitlab.gnome.org/gnome/gtk/fedora-docs:v25"
 
-workflow:
-  rules:
-    # run merge request pipelines
-    - if: $CI_PIPELINE_SOURCE == "merge_request_event"
-    # do not run branch pipelines if corresponding merge requests exist...
-    # (this avoids duplicate pipelines)
-    - if: $CI_COMMIT_BRANCH && $CI_OPEN_MERGE_REQUESTS
-      when: never
-    # ...but otherwise run branch pipelines
-    - if: $CI_COMMIT_BRANCH
-    # run tag pipelines
-    - if: $CI_COMMIT_TAG
-
-default:
-  retry:
-    max: 2
-    when:
-      - 'runner_system_failure'
-      - 'stuck_or_timeout_failure'
-      - 'scheduler_failure'
-      - 'api_failure'
-  interruptible: true
+.only-default:
+  only:
+    - branches
+  except:
+    - tags
 
 style-check-diff:
+  extends: .only-default
   image: $FEDORA_IMAGE
-  stage: check
-  when: manual
+  stage: .pre
+  allow_failure: true
   script:
     - .gitlab-ci/run-style-check-diff.sh
 
@@ -67,7 +50,6 @@ style-check-diff:
       junit:
         - "${CI_PROJECT_DIR}/_build/report-x11.xml"
         - "${CI_PROJECT_DIR}/_build/report-wayland.xml"
-        - "${CI_PROJECT_DIR}/_build/report-wayland_gl.xml"
         - "${CI_PROJECT_DIR}/_build/report-broadway.xml"
     name: "gtk-${CI_COMMIT_REF_NAME}"
     paths:
@@ -75,17 +57,17 @@ style-check-diff:
       - "${CI_PROJECT_DIR}/_build/report*.xml"
       - "${CI_PROJECT_DIR}/_build/report*.html"
       - "${CI_PROJECT_DIR}/_build/testsuite/reftests/output/*/*.png"
-      - "${CI_PROJECT_DIR}/_build/testsuite/reftests/output/*/*.node"
-      - "${CI_PROJECT_DIR}/_build/testsuite/tools/output/*/*"
       - "${CI_PROJECT_DIR}/_build/testsuite/gsk/compare/*/*/*.png"
-      - "${CI_PROJECT_DIR}/_build/testsuite/gsk/compare/*/*/*.node"
       - "${CI_PROJECT_DIR}/_build/testsuite/css/output/*/*.syscap"
-      - "${CI_PROJECT_DIR}/_build/testsuite/headless/*/*.log"
-      - "${CI_PROJECT_DIR}/_build_hello/meson-logs"
   cache:
     key: "$CI_JOB_NAME"
     paths:
       - _ccache/
+      - subprojects/gdk-pixbuf/
+      - subprojects/glib/
+      - subprojects/graphene/
+      - subprojects/libepoxy/
+      - subprojects/pango/
 
 fedora-x86_64:
   extends: .build-fedora-default
@@ -94,20 +76,13 @@ fedora-x86_64:
   variables:
     EXTRA_MESON_FLAGS: "--buildtype=debug --default-library=both"
   script:
-    - .gitlab-ci/show-info-linux.sh
-    - export PATH="$HOME/.local/bin:$PATH"
-    - meson subprojects download
-    - meson subprojects update --reset
-    - meson setup
-            ${COMMON_MESON_FLAGS}
-            ${EXTRA_MESON_FLAGS}
-            ${BACKEND_FLAGS}
-            ${FEATURE_FLAGS}
+    - meson subprojects update
+    - meson ${COMMON_MESON_FLAGS} ${EXTRA_MESON_FLAGS} ${BACKEND_FLAGS} ${FEATURE_FLAGS}
             _build
-    - meson compile -C _build
-    - .gitlab-ci/run-tests.sh _build x11 gtk
-    # only repeat test runs that are likely affected by test setups
-    - .gitlab-ci/run-tests.sh _build wayland_gl gtk:gdk,gtk:gsk-gl
+    - ninja -C _build
+    - .gitlab-ci/run-tests.sh _build x11
+    - .gitlab-ci/run-tests.sh _build wayland
+    - .gitlab-ci/run-tests.sh _build broadway
 
 release-build:
   extends: .build-fedora-default
@@ -116,70 +91,34 @@ release-build:
   variables:
     EXTRA_MESON_FLAGS: "--buildtype=release"
   script:
-    - .gitlab-ci/show-info-linux.sh
-    - mkdir _install
-    # don't use catch by default, since it causes sporadic test failures
-    # - export PATH="$HOME/.local/bin:${CI_PROJECT_DIR}/_install/bin:$PATH"
-    # - .gitlab-ci/install-meson-project.sh --prefix ${CI_PROJECT_DIR}/_install https://gitlab.gnome.org/jadahl/catch.git main
-    - meson subprojects download
-    - meson subprojects update --reset
-    - meson setup
-            --prefix=${CI_PROJECT_DIR}/_install
-            ${COMMON_MESON_FLAGS}
-            ${EXTRA_MESON_FLAGS}
-            ${BACKEND_FLAGS}
-            ${FEATURE_FLAGS}
+    - meson subprojects update
+    - meson ${COMMON_MESON_FLAGS} ${EXTRA_MESON_FLAGS} ${BACKEND_FLAGS} ${FEATURE_FLAGS}
             _build
-    - meson compile -C _build
-    - meson install -C _build
-    - PKG_CONFIG_PATH=${CI_PROJECT_DIR}/_install/lib64/pkgconfig:${CI_PROJECT_DIR}/_install/share/pkgconfig meson setup _build_hello examples/hello
-    - LD_LIBRARY_PATH=${CI_PROJECT_DIR}/_install/lib64 meson compile -C _build_hello
-    - .gitlab-ci/run-tests.sh _build wayland gtk
+    - ninja -C _build
+    - .gitlab-ci/run-tests.sh _build x11
 
-fedora-clang:
+installed-tests:
   extends: .build-fedora-default
   stage: build
   needs: []
   variables:
-    EXTRA_MESON_FLAGS: "--buildtype=release"
+    EXTRA_MESON_FLAGS: "--prefix=/usr --libdir=/usr/lib64 -Dinstall-tests=true"
+    G_TEST_ACCESSIBLE: 1
   script:
-    - .gitlab-ci/show-info-linux.sh
-    - export PATH="$HOME/.local/bin:$PATH"
-    - export CC=clang
-    - meson subprojects download
-    - meson subprojects update --reset
-    - meson setup
-            ${COMMON_MESON_FLAGS}
-            ${EXTRA_MESON_FLAGS}
-            ${BACKEND_FLAGS}
-            ${FEATURE_FLAGS}
+    - meson subprojects update
+    - meson ${COMMON_MESON_FLAGS} ${EXTRA_MESON_FLAGS} ${BACKEND_FLAGS} ${FEATURE_FLAGS}
             _build
-    - meson compile -C _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/"
 
-fedora-mingw64:
-  extends: .build-fedora-default
-  stage: build
-  needs: []
-  before_script:
-    - sudo dnf install -y
-            mingw64-filesystem
-            mingw64-gcc
-            mingw64-binutils
-            mingw64-cairo
-            mingw64-gdk-pixbuf
-            mingw64-gstreamer1-plugins-bad-free
-            mingw64-glib2
-            mingw64-libepoxy
-            mingw64-pango
-            # mingw64-graphene (rawhide)
-  script:
-    - .gitlab-ci/show-info-linux.sh
-    - export PATH="$HOME/.local/bin:$PATH"
-    - pip3 install --user meson~=1.0
-    - meson subprojects download
-    - meson subprojects update --reset
-    - meson -Dintrospection=disabled -Dgraphene:introspection=disabled _build
-    - meson compile -C _build
 
 .mingw-defaults:
   stage: build
@@ -198,90 +137,15 @@ fedora-mingw64:
       - subprojects/libepoxy/
       - subprojects/pango/
 
-msys2-ucrt64:
+msys2-mingw64:
   extends: .mingw-defaults
   needs: []
   variables:
-    MSYSTEM: "UCRT64"
+    MSYSTEM: "MINGW64"
     CHERE_INVOKING: "yes"
-  artifacts:
-    when: always
-    expose_as: 'Windows_DLL_MSYS2_64_bit_toolchain'
-    paths:
-      - "${CI_PROJECT_DIR}/_build/gtkdll.tar.gz"
-
-macos:
-  rules:
-    # Do not run in forks as the runner is not available there.
-    # (except for dehesselle who maintains the runner)
-    - if: $CI_PROJECT_NAMESPACE != "GNOME" && $CI_PROJECT_NAMESPACE != "dehesselle"
-      when: never
-    - if: $RUNNER == "macosintel"
-      variables:
-        SDKROOT: /opt/sdks/MacOSX10.13.4.sdk
-        NINJA_PKG: $CI_API_V4_URL/projects/30745/packages/generic/ninja_macos/v1.11.1.1+9/ninja-1.11.1.1-cp38-cp38-macosx_11_0_x86_64.whl
-      when: manual
-      allow_failure: true
-    - if: $RUNNER == "macosarm"
-      variables:
-        SDKROOT: /opt/sdks/MacOSX11.3.sdk
-        NINJA_PKG: ninja==1.11.1.1
-  stage: build
-  parallel:
-    matrix:
-      - RUNNER: [ "macosintel", "macosarm" ]
-  tags:
-    - ${RUNNER}
-  needs: []
-  variables:
-    EXTRA_MESON_FLAGS: ""
-    BACKEND_FLAGS: "-Dx11-backend=false -Dbroadway-backend=true"
-    FEATURE_FLAGS: "-Dmedia-gstreamer=disabled -Dintrospection=enabled -Dgobject-introspection:werror=false"
-    TMPDIR: /Users/Shared/work/tmp
-    PIP_CACHE_DIR: /Users/Shared/build/cache
-    PIPENV_CACHE_DIR: $PIP_CACHE_DIR
-    PYTHONPYCACHEPREFIX: $PIP_CACHE_DIR
-  before_script:
-    - .gitlab-ci/show-info-macos.sh
-    - python3 -m venv .venv
-    # Building the introspection feature requires pkg-config and bison.
-    - curl -L $CI_API_V4_URL/projects/30437/packages/generic/pkgconfig/v0.29.2+10/pkg-config-0.29.2+10_$(uname -m).tar.xz | tar -C .venv -xJ
-    - curl -L $CI_API_V4_URL/projects/30438/packages/generic/bison/v3.8.2+3/bison-3.8.2+3_$(uname -m).tar.xz | tar -C .venv -xJ
-    - source .venv/bin/activate
-    - pip3 install meson==1.3.2 $NINJA_PKG
-    # We're not setting up ccache here on purpose as it accelerates the build
-    # so much that it triggers race conditions in the gobject-introspection
-    # subproject.
-  script:
-    - meson setup
-            ${COMMON_MESON_FLAGS}
-            ${EXTRA_MESON_FLAGS}
-            ${BACKEND_FLAGS}
-            ${FEATURE_FLAGS}
-            _build
-    - meson compile -C _build
-  artifacts:
-    when: always
-    paths:
-      - "${CI_PROJECT_DIR}/_build/meson-logs"
-
-vs2017-x64:
-  # TODO: Uncomment this when ready to merge.
-  # rules:
-  #   - if: $CI_PROJECT_NAMESPACE == "GNOME"
-  stage: build
-  tags:
-    - win32-ps
-  needs: []
-  script:
-    - .gitlab-ci/test-msvc.bat
-  artifacts:
-    when: always
-    paths:
-      - "${CI_PROJECT_DIR}/_build/meson-logs"
 
 .flatpak-defaults:
-  image: "quay.io/gnome_infrastructure/gnome-runtime-images:gnome-master"
+  image: $FLATPAK_IMAGE
   stage: flatpak
   allow_failure: true
   tags:
@@ -291,104 +155,73 @@ vs2017-x64:
       - "${APPID}-dev.flatpak"
       - 'repo.tar'
     expire_in: 1 day
-  rules:
-    # Only build Flatpak bundles automatically on main
-    - if: $CI_COMMIT_BRANCH == "main"
-    - if: $CI_COMMIT_BRANCH != "main"
-      when: "manual"
   script:
     - bash -x ./.gitlab-ci/flatpak-build.sh "${APPID}"
 
-flatpak:demo:
-  extends: '.flatpak-defaults'
+# Manual jobs, for branches and MRs
+.flatpak-manual:
+  extends: .flatpak-defaults
+  when: manual
+
+# Only build Flatpak bundles automatically on master
+.flatpak-master:
+  extends: .flatpak-defaults
+  only:
+    - master
+
+flatpak-manual:demo:
+  extends: .flatpak-manual
   needs: []
   variables:
     APPID: org.gtk.Demo4
 
-flatpak:demo:aarch64:
-  extends: '.flatpak-defaults'
+flatpak-master:demo:
+  extends: .flatpak-master
   needs: []
-  tags:
-    - flatpak-aarch64
   variables:
     APPID: org.gtk.Demo4
 
-flatpak:widget-factory:
-  extends: '.flatpak-defaults'
+flatpak-manual:widget-factory:
+  extends: .flatpak-manual
   needs: []
   variables:
     APPID: org.gtk.WidgetFactory4
 
-flatpak:widget-factory:aarch64:
-  extends: '.flatpak-defaults'
+flatpak-master:widget-factory:
+  extends: .flatpak-master
   needs: []
-  tags:
-    - flatpak-aarch64
   variables:
     APPID: org.gtk.WidgetFactory4
 
-flatpak:icon-browser:
-  extends: '.flatpak-defaults'
+flatpak-manual:icon-browser:
+  extends: .flatpak-manual
   needs: []
   variables:
     APPID: org.gtk.IconBrowser4
 
-flatpak:icon-browser:aarch64:
-  extends: '.flatpak-defaults'
+flatpak-master:icon-browser:
+  extends: .flatpak-master
   needs: []
-  tags:
-    - flatpak-aarch64
   variables:
     APPID: org.gtk.IconBrowser4
 
-flatpak:node-editor:
-  extends: '.flatpak-defaults'
-  needs: []
-  variables:
-    APPID: org.gtk.gtk4.NodeEditor
-
-flatpak:node-editor:aarch64:
-  extends: '.flatpak-defaults'
-  needs: []
-  tags:
-    - flatpak-aarch64
-  variables:
-    APPID: org.gtk.gtk4.NodeEditor
-
 # 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'
-    needs: ['flatpak:demo']
-
-nightly demo aarch64:
-    extends: '.publish_nightly'
-    needs: ['flatpak:demo:aarch64']
+    dependencies: ['flatpak-master:demo']
+    needs: ['flatpak-master:demo']
 
 nightly factory:
     extends: '.publish_nightly'
-    needs: ['flatpak:widget-factory']
-
-nightly factory aarch64:
-    extends: '.publish_nightly'
-    needs: ['flatpak:widget-factory:aarch64']
+    dependencies: ['flatpak-master:widget-factory']
+    needs: ['flatpak-master:widget-factory']
 
 nightly icon-browser:
     extends: '.publish_nightly'
-    needs: ['flatpak:icon-browser']
-
-nightly icon-browser aarch64:
-    extends: '.publish_nightly'
-    needs: ['flatpak:icon-browser:aarch64']
-
-nightly node-editor:
-    extends: '.publish_nightly'
-    needs: ['flatpak:node-editor']
-
-nightly node-editor aarch64:
-    extends: '.publish_nightly'
-    needs: ['flatpak:node-editor:aarch64']
+    dependencies: ['flatpak-master:icon-browser']
+    needs: ['flatpak-master:icon-browser']
 
 static-scan:
   image: $FEDORA_IMAGE
@@ -397,90 +230,54 @@ static-scan:
   variables:
     EXTRA_MESON_FLAGS: "--buildtype=debug"
   script:
-    - export PATH="$HOME/.local/bin:$PATH"
-    - meson setup
-            ${COMMON_MESON_FLAGS}
-            ${EXTRA_MESON_FLAGS}
-            ${BACKEND_FLAGS}
-            ${FEATURE_FLAGS}
-            _scan_build
+    - meson ${COMMON_MESON_FLAGS} ${EXTRA_MESON_FLAGS} _scan_build
     - ninja -C _scan_build scan-build
   artifacts:
     paths:
       - _scan_build/meson-logs
   allow_failure: true
 
-# Run tests with the address sanitizer. We need to turn off introspection
-# and f16c, since they are incompatible with asan
+# Run tests with the address sanitizer. We need to turn off introspection,
+# since it is incompatible with asan
 asan-build:
-  extends: .build-fedora-default
+  image: $FEDORA_IMAGE
   tags: [ asan ]
   stage: analysis
   needs: []
   variables:
-    MESON_TEST_MAX_PROCESSES: 4
   script:
-    - export PATH="$HOME/.local/bin:$PATH"
-    - CC=clang meson setup
-            --buildtype=debugoptimized
-            -Db_sanitize=address
-            -Db_lundef=false
-            -Dbuild-demos=false
-            -Dbuild-tests=false
-            -Dbuild-examples=false
-            -Dintrospection=disabled
-            -Df16c=disabled
-            _build
+    - CC=clang meson --buildtype=debugoptimized -Db_sanitize=address -Db_lundef=false -Dintrospection=disabled _build
     - ninja -C _build
-    - .gitlab-ci/run-tests.sh _build wayland gtk
+    - .gitlab-ci/run-tests.sh _build wayland
+  artifacts:
+    paths:
+      - _build/meson-logs
+  allow_failure: true
 
 reference:
-  image: $FEDORA_IMAGE
+  image: $DOCS_IMAGE
   stage: docs
   needs: []
+  variables:
+    EXTRA_MESON_FLAGS: "--buildtype=release"
   script:
-    - export PATH="$HOME/.local/bin:$PATH"
-    - meson setup
-            ${COMMON_MESON_FLAGS}
-            --buildtype=release
-            --force-fallback-for=gdk-pixbuf,pango
-            -Dintrospection=enabled
-            -Ddocumentation=true
-            -Dman-pages=true
-            -Dgdk-pixbuf:gtk_doc=true
-            -Dpango:documentation=true
-            -Dbuild-demos=true
-            -Dbuild-examples=false
-            -Dbuild-tests=false
-            -Dbuild-testsuite=false
-            _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/docs/reference/gtk/*.html _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:
-  image: fedora:latest
-  stage: publish
-  interruptible: false
+pages:
+  stage: deploy
   needs: ['reference']
   script:
-    - "curl -X POST -F token=${PAGES_TRIGGER_TOKEN} -F ref=docs-gtk-org https://gitlab.gnome.org/api/v4/projects/665/trigger/pipeline"
-  rules:
-    - if: $CI_COMMIT_REF_NAME == "main"
-
+    - mv _reference/ public/
+  artifacts:
+    paths:
+      - public
+  only:
+    - master

.gitlab-ci/README.md

@@ -14,14 +14,11 @@ Each Docker image has a tag composed of two parts:
 See the [container registry][registry] for the available images for each
 branch, as well as their available versions.
 
-Note that using `latest` as version number will overwrite the most
-recently uploaded image in the registry.
-
 ### 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 ${number}`
    once the Docker image is built; you may need to log in by using
    `docker login` or `podman login`
  - [ ] Update the `image` keys in the `.gitlab-ci.yml` file with the new
@@ -33,8 +30,8 @@ recently uploaded image in the registry.
  - [ ] Write a new `${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
 

.gitlab-ci/fedora-base.Dockerfile

@@ -0,0 +1,91 @@
+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 \
+    gnome-desktop-testing \
+    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 \
+    libcloudproviders-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 \
+    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==0.55.3
+

.gitlab-ci/fedora-docs.Dockerfile

@@ -0,0 +1,12 @@
+FROM registry.gitlab.gnome.org/gnome/gtk/fedora-base:v25
+
+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

.gitlab-ci/fedora.Dockerfile

@@ -1,108 +1,4 @@
-FROM fedora:40
-
-RUN dnf -y install \
-    adwaita-icon-theme \
-    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 \
-    expat-devel \
-    fribidi-devel \
-    gcc \
-    gcc-c++ \
-    gdk-pixbuf2-devel \
-    gdk-pixbuf2-modules \
-    gettext \
-    git \
-    glib2-devel \
-    glib2-static \
-    glibc-devel \
-    glibc-headers \
-    glslc \
-    gnupg2 \
-    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 \
-    mutter \
-    ninja-build \
-    pango-devel \
-    pcre-devel \
-    pcre-static \
-    pipewire \
-    pipewire-gstreamer \
-    python3 \
-    python3-docutils \
-    python3-gobject \
-    python3-jinja2 \
-    python3-markdown \
-    python3-packaging \
-    python3-pip \
-    python3-pydbus \
-    python3-pygments \
-    python3-typogrify \
-    python3-wheel \
-    redhat-rpm-config \
-    sassc \
-    vulkan-devel \
-    wayland-devel \
-    wayland-protocols-devel \
-    weston \
-    weston-libs \
-    which \
-    wireplumber \
-    xorg-x11-server-Xvfb \
- && dnf -y update \
- && dnf clean all
-
-RUN rm /usr/share/vulkan/icd.d/powervr_mesa_icd.x86_64.json
+FROM registry.gitlab.gnome.org/gnome/gtk/fedora-base:v25
 
 # Enable sudo for wheel users
 RUN sed -i -e 's/# %wheel/%wheel/' -e '0,/%wheel/{s/%wheel/# %wheel/}' /etc/sudoers

.gitlab-ci/flatpak-build.sh

@@ -16,18 +16,17 @@ flatpak-builder \
 flatpak build ${builddir} meson \
                 --prefix=/app \
                 --libdir=/app/lib \
-                --buildtype=debugoptimized \
+                --buildtype=release \
                 -Dx11-backend=true \
                 -Dwayland-backend=true \
+                -Dprint-backends=file \
                 -Dbuild-tests=false \
-                -Dbuild-testsuite=false \
                 -Dbuild-examples=false \
                 -Dintrospection=disabled \
-                -Dbuild-demos=true \
-                -Dprofile=devel \
+                -Ddemos=true \
                 _flatpak_build
 
-flatpak build --env=CI_COMMIT_SHORT_SHA=$CI_COMMIT_SHORT_SHA ${builddir} ninja -C _flatpak_build install
+flatpak build ${builddir} ninja -C _flatpak_build install
 
 flatpak-builder \
         --user --disable-rofiles-fuse \
@@ -43,6 +42,6 @@ flatpak build-bundle \
         ${appid}
 
 # to be consumed by the nightly publish jobs
-if [[ $CI_COMMIT_BRANCH == main ]]; then
+if [[ $CI_COMMIT_BRANCH == master ]]; then
         tar cf repo.tar ${repodir}
 fi

.gitlab-ci/install-meson-project.sh

@@ -1,91 +0,0 @@
-#!/bin/bash
-
-set -e
-
-usage() {
-  cat <<-EOF
-	Usage: $(basename $0) [OPTION…] REPO_URL COMMIT
-
-	Check out and install a meson project
-
-	Options:
-	  -Dkey=val      Option to pass on to meson
-	  --prefix       Prefix to install to
-	  --subdir       Build subdirectory instead of whole project
-	  --prepare      Script to run before build
-
-	  -h, --help     Display this help
-
-	EOF
-}
-
-TEMP=$(getopt \
-  --name=$(basename $0) \
-  --options='D:h' \
-  --longoptions='prefix:' \
-  --longoptions='subdir:' \
-  --longoptions='prepare:' \
-  --longoptions='help' \
-  -- "$@")
-
-eval set -- "$TEMP"
-unset TEMP
-
-MESON_OPTIONS=()
-PREFIX=/usr
-SUBDIR=.
-PREPARE=:
-
-while true; do
-  case "$1" in
-    -D)
-      MESON_OPTIONS+=( -D$2 )
-      shift 2
-    ;;
-
-    --prefix)
-      PREFIX=$2
-      shift 2
-    ;;
-
-    --subdir)
-      SUBDIR=$2
-      shift 2
-    ;;
-
-    --prepare)
-      PREPARE=$2
-      shift 2
-    ;;
-
-    -h|--help)
-      usage
-      exit 0
-    ;;
-
-    --)
-      shift
-      break
-    ;;
-  esac
-done
-
-if [[ $# -lt 2 ]]; then
-  usage
-  exit 1
-fi
-
-REPO_URL="$1"
-COMMIT="$2"
-
-CHECKOUT_DIR=$(mktemp --directory)
-trap "rm -rf $CHECKOUT_DIR" EXIT
-
-git clone --depth 1 "$REPO_URL" -b "$COMMIT" "$CHECKOUT_DIR"
-
-pushd "$CHECKOUT_DIR/$SUBDIR"
-sh -c "$PREPARE"
-meson setup --prefix "$PREFIX" _build "${MESON_OPTIONS[@]}"
-meson compile -C _build
-meson install -C _build
-popd

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

@@ -185,8 +185,6 @@ ul.images li {
                 <li><img alt="ref" src="{{ failure.image_data.ref }}" /></li>
                 <li><img alt="out" src="{{ failure.image_data.out }}" /></li>
                 <li><img alt="diff" src="{{ failure.image_data.diff }}" /></li>
-                <li><a href="{{ failure.image_data.refnode }}">ref node</a></li>
-                <li><a href="{{ failure.image_data.outnode }}">out node</a></li>
               </ul>
               {% endif %}
             </li>
@@ -270,7 +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'),
@@ -313,8 +311,6 @@ for line in args.infile:
         image_data = {
             'ref': os.path.join(args.reftest_output_dir, '{}.ref.png'.format(basename)),
             'out': os.path.join(args.reftest_output_dir, '{}.out.png'.format(basename)),
-            'refnode': os.path.join(args.reftest_output_dir, '{}.ref.node'.format(basename)),
-            'outnode': os.path.join(args.reftest_output_dir, '{}.out.node'.format(basename)),
             'diff': os.path.join(args.reftest_output_dir, '{}.diff.png'.format(basename)),
         }
 
@@ -324,7 +320,7 @@ for line in args.infile:
     units.append(unit)
 
 report = {}
-report['date'] = datetime.datetime.now(datetime.UTC)
+report['date'] = datetime.datetime.utcnow()
 report['locale_date'] = report['date'].strftime("%c")
 report['project_name'] = args.project_name
 report['backend'] = args.backend

.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'),
@@ -44,7 +44,7 @@ outfile = args.output
 testsuites = ET.Element('testsuites')
 testsuites.set('id', '{}/{}'.format(args.job_id, args.branch))
 testsuites.set('package', args.project_name)
-testsuites.set('timestamp', datetime.datetime.now(datetime.UTC).isoformat(timespec='minutes'))
+testsuites.set('timestamp', datetime.datetime.utcnow().isoformat(timespec='minutes'))
 
 suites = {}
 for line in args.infile:

.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
- */
-@import url('https://fonts.googleapis.com/css2?family=Noto+Serif:ital,wght@0,400;0,700;1,400;1,700&family=Red+Hat+Display:ital,wght@0,400;0,500;0,700;0,900;1,400;1,500;1,700;1,900&display=swap');
-@import url('https://fonts.googleapis.com/css2?family=Noto+Serif:ital,wght@0,400;0,700;1,400;1,700&display=swap');
-@import url('https://fonts.googleapis.com/css2?family=Source+Code+Pro:ital,wght@0,400;0,500;0,600;0,700;1,400;1,500;1,600&display=swap');
-
-@font-face {
-  font-family: "RedHatDisplayWeb";
-  src: local('RedHatDisplayWeb'),
-       url("RedHatDisplay-Regular.woff2") format("woff2"),
-       url("RedHatDisplay-Regular.woff") format("woff");
-  font-style: normal;
-  font-weight: 400;
-  font-display: fallback;
-}
-
-@font-face {
-  font-family: "RedHatDisplayWeb";
-  src: local('RedHatDisplayWeb'),
-       url("RedHatDisplay-RegularItalic.woff2") format("woff2"),
-       url("RedHatDisplay-RegularItalic.woff") format("woff");
-  font-style: italic;
-  font-weight: 400;
-  font-display: fallback;
-}
-
-@font-face {
-  font-family: "RedHatDisplayWeb";
-  src: local('RedHatDisplayWeb'),
-       url("RedHatDisplay-Medium.woff2") format("woff2"),
-       url("RedHatDisplay-Medium.woff") format("woff");
-  font-style: normal;
-  font-weight: 500;
-  font-display: fallback;
-}
-
-@font-face {
-  font-family: "RedHatDisplayWeb";
-  src: local('RedHatDisplayWeb'),
-       url("RedHatDisplay-MediumItalic.woff2") format("woff2"),
-       url("RedHatDisplay-MediumItalic.woff") format("woff");
-  font-style: italic;
-  font-weight: 500;
-  font-display: fallback;
-}
-
-@font-face {
-  font-family: "RedHatDisplayWeb";
-  src: local('RedHatDisplayWeb'),
-       url("RedHatDisplay-Bold.woff2") format("woff2"),
-       url("RedHatDisplay-Bold.woff") format("woff");
-  font-style: normal;
-  font-weight: 700;
-  font-display: fallback;
-}
-
-@font-face {
-  font-family: "RedHatDisplayWeb";
-  src: local('RedHatDisplayWeb'),
-       url("RedHatDisplay-BoldItalic.woff2") format("woff2"),
-       url("RedHatDisplay-BoldItalic.woff") format("woff");
-  font-style: italic;
-  font-weight: 700;
-  font-display: fallback;
-}
-
-
-@font-face {
-  font-family: "RedHatDisplayWeb";
-  src: local('RedHatDisplayWeb'),
-       url("RedHatDisplay-Black.woff2") format("woff2"),
-       url("RedHatDisplay-Black.woff") format("woff");
-  font-style: normal;
-  font-weight: 900;
-  font-display: fallback;
-}
-
-@font-face {
-  font-family: "RedHatDisplayWeb";
-  src: local('RedHatDisplayWeb'),
-       url("RedHatDisplay-BlackItalic.woff2") format("woff2"),
-       url("RedHatDisplay-BlackItalic.woff") format("woff");
-  font-style: italic;
-  font-weight: 900;
-  font-display: fallback;
-}
-
-@font-face {
-  font-family: "RedHatTextWeb";
-  src: local('RedHatTextWeb'),
-       url("RedHatText-Regular.woff2") format("woff2"),
-       url("RedHatText-Regular.woff") format("woff");
-  font-style: normal;
-  font-weight: 400;
-  font-display: fallback;
-}
-
-@font-face {
-  font-family: "RedHatTextWeb";
-  src: local('RedHatTextWeb'),
-       url("RedHatText-RegularItalic.woff2") format("woff2"),
-       url("RedHatText-RegularItalic.woff") format("woff");
-  font-style: italic;
-  font-weight: 400;
-  font-display: fallback;
-}
-
-@font-face {
-  font-family: "RedHatTextWeb";
-  src: local('RedHatTextWeb'),
-       url("RedHatText-Medium.woff2") format("woff2"),
-       url("RedHatText-Medium.woff") format("woff");
-  font-style: normal;
-  font-weight: 700;
-  font-display: fallback;
-}
-
-@font-face {
-  font-family: "RedHatTextWeb";
-  src: local('RedHatTextWeb'),
-       url("RedHatText-MediumItalic.woff2") format("woff2"),
-       url("RedHatText-MediumItalic.woff") format("woff");
-  font-style: italic;
-  font-weight: 700;
-  font-display: fallback;
-}
-
-@font-face {
-  font-family: "RedHatTextWeb";
-  src: local('RedHatTextWeb'),
-       url("RedHatText-Bold.woff2") format("woff2"),
-       url("RedHatText-Bold.woff") format("woff");
-  font-style: normal;
-  font-weight: 900;
-  font-display: fallback;
-}
-
-@font-face {
-  font-family: "RedHatTextWeb";
-  src: local('RedHatTextWeb'),
-       url("RedHatText-BoldItalic.woff2") format("woff2"),
-       url("RedHatText-BoldItalic.woff") format("woff");
-  font-style: italic;
-  font-weight: 900;
-  font-display: fallback;
-}

.gitlab-ci/pages/gtk-logo.svg

@@ -1,138 +0,0 @@
-<?xml version="1.0" encoding="UTF-8" standalone="no"?>
-<!-- Created with Inkscape (http://www.inkscape.org/) -->
-
-<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"
-   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
-   width="128"
-   height="128"
-   id="svg6843"
-   sodipodi:version="0.32"
-   inkscape:version="0.92.4 5da689c313, 2019-01-14"
-   version="1.0"
-   sodipodi:docname="gtk-logo.svg"
-   inkscape:output_extension="org.inkscape.output.svg.inkscape"
-   inkscape:export-filename="/home/ebassi/Pictures/gtk-logo-256.png"
-   inkscape:export-xdpi="192"
-   inkscape:export-ydpi="192">
-  <defs
-     id="defs6845">
-    <inkscape:perspective
-       sodipodi:type="inkscape:persp3d"
-       inkscape:vp_x="-50 : 600 : 1"
-       inkscape:vp_y="0 : 1000 : 0"
-       inkscape:vp_z="700 : 600 : 1"
-       inkscape:persp3d-origin="300 : 400 : 1"
-       id="perspective13" />
-  </defs>
-  <sodipodi:namedview
-     id="base"
-     pagecolor="#ffffff"
-     bordercolor="#666666"
-     borderopacity="1.0"
-     inkscape:pageopacity="0"
-     inkscape:pageshadow="2"
-     inkscape:zoom="2.8284271"
-     inkscape:cx="69.874353"
-     inkscape:cy="64.313526"
-     inkscape:current-layer="layer1"
-     showgrid="false"
-     inkscape:document-units="px"
-     inkscape:grid-bbox="true"
-     width="128px"
-     height="128px"
-     showguides="true"
-     inkscape:guide-bbox="true"
-     inkscape:window-width="1920"
-     inkscape:window-height="1016"
-     inkscape:window-x="0"
-     inkscape:window-y="27"
-     inkscape:window-maximized="1">
-    <inkscape:grid
-       type="xygrid"
-       id="grid7947" />
-  </sodipodi:namedview>
-  <metadata
-     id="metadata6848">
-    <rdf:RDF>
-      <cc:Work
-         rdf:about="">
-        <dc:format>image/svg+xml</dc:format>
-        <dc:type
-           rdf:resource="http://purl.org/dc/dcmitype/StillImage" />
-        <dc:title />
-        <dc:date />
-        <dc:creator>
-          <cc:Agent>
-            <dc:title />
-          </cc:Agent>
-        </dc:creator>
-        <dc:rights>
-          <cc:Agent>
-            <dc:title />
-          </cc:Agent>
-        </dc:rights>
-        <dc:publisher>
-          <cc:Agent>
-            <dc:title />
-          </cc:Agent>
-        </dc:publisher>
-        <dc:identifier />
-        <dc:source />
-        <dc:relation />
-        <dc:language />
-        <dc:subject>
-          <rdf:Bag />
-        </dc:subject>
-        <dc:coverage />
-        <dc:description />
-        <dc:contributor>
-          <cc:Agent>
-            <dc:title />
-          </cc:Agent>
-        </dc:contributor>
-        <cc:license
-           rdf:resource="" />
-      </cc:Work>
-      <cc:Work
-         rdf:about="">
-        <dc:format>image/svg+xml</dc:format>
-        <dc:type
-           rdf:resource="http://purl.org/dc/dcmitype/StillImage" />
-      </cc:Work>
-    </rdf:RDF>
-  </metadata>
-  <g
-     id="layer1"
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@@ -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" />
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-  <!--[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>

.gitlab-ci/pages/main.js

@@ -1,140 +0,0 @@
-// SPDX-FileCopyrightText: 2021 GNOME Foundation
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-function hasOwnProperty(obj, property) {
-    return Object.prototype.hasOwnProperty.call(obj, property);
-}
-
-window.addEventListener("load", function() {
-    "use strict;"
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.gitlab-ci/pages/style.css

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- *
- * SPDX-License-Identifier: LGPL-2.1-or-later
- */
-
-@import url("fonts.css");
-
-/*********************************
- * LIGHT THEME
- *********************************/
-:root {
-
-  /* colors */
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-  --text-color-muted: #999;
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-  --sidebar-text-color: #fafafa;
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-
-  /* boxes, e.g. code blocks */
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-  --box-radius: 0.35rem;
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-  /* typography */
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-  --heading-font-family: "Red Hat Display", var(--body-font-family);
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-  --heading-small-font-family: var(--heading-font-family);
-  --heading-small-weight: 600;
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-
-  --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.*/
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-
-  --symbol-font-family: var(--heading-font-family);
-  --symbol-font-weight: 500;
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-
-  --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 */
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-  --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 {
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-
-/*********************************
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- *********************************/
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-*:before,
-*:after {
-  box-sizing: border-box;
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-
-::-moz-selection {
-  color: white;
-  background: var(--primary);
-}
-
-::selection {
-  color: white;
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-::-webkit-scrollbar {
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-  height: 8px;
-}
-
-::-webkit-scrollbar-thumb {
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-  background: rgba(128, 128, 128, 0.6);
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-
-* {
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-body {
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-  font-weight: var(--body-font-weight);
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-h3 {
-  font-size: calc(1.2em * var(--heading-font-scale));
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-h6 {
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-ul ul, ol ul, ul ol, ol ol {
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-p {
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-a {
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-a:hover {
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-summary {
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-blockquote {
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-  background: var(--box-bg);
-  padding: var(--box-padding);
-  border-radius: var(--box-radius);
-  margin: var(--box--margin);
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-  color: var(--box-text-color);
-}
-
-pre {
-  background: var(--box-bg);
-  padding: var(--box-padding);
-  border-radius: var(--box-radius);
-  overflow: auto;
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-code {
-  background: var(--box-bg);
-  padding: 0 0.35em;
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-a > code {
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-  margin: 0;
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-  background: none;
-  color: inherit;
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-h1 code, h2 code, h3 code, h4 code, h5 code, h6 code {
-  font-family: inherit;
-  font-weight: inherit;
-  font-size: 0.85em;
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-strong, b {
-  font-weight: 600;
-}
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-/* 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;
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-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,
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-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;
-}
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-#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);
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-  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;
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-.sidebar a,
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-.sidebar .logo {
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-  margin: 2rem auto 0 auto;
-  width: 70%;
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-.sidebar .section > ul > li {
-  margin-right: -10px;
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-.sidebar .section h3, .sidebar .section h5 {
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-  padding-left: 0.5rem;
-  padding-right: 0.5rem;
-  font-weight: var(--heading-weight);
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-.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;
-  }
-}

.gitlab-ci/run-docker.sh

@@ -23,7 +23,6 @@ push=0
 list=0
 print_help=0
 no_login=0
-no_cache=0
 
 while (($# > 0)); do
         case "${1%%=*}" in
@@ -33,9 +32,8 @@ 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;;
-                --no-cache) no_cache=1;;
                 *) echo -e "\e[1;31mERROR\e[0m: Unknown option '$1'"; exit 1;;
         esac
         shift
@@ -105,21 +103,11 @@ TAG="${REGISTRY}/gnome/gtk/${base}:${base_version}"
 
 if [ $build == 1 ]; then
         echo -e "\e[1;32mBUILDING\e[0m: ${base} as ${TAG}"
-        if [ $no_cache == 0 ]; then
-                ${CMD} build \
-                        ${format} \
-                        --build-arg HOST_USER_ID="$UID" \
-                        --tag "${TAG}" \
-                        --file "${base}.Dockerfile" .
-        else
-                ${CMD} build \
-                        ${format} \
-                        --no-cache \
-                        --build-arg HOST_USER_ID="$UID" \
-                        --tag "${TAG}" \
-                        --file "${base}.Dockerfile" .
-        fi
-
+        ${CMD} build \
+                ${format} \
+                --build-arg HOST_USER_ID="$UID" \
+                --tag "${TAG}" \
+                --file "${base}.Dockerfile" .
         exit $?
 fi
 
@@ -138,8 +126,7 @@ if [ $run == 1 ]; then
         echo -e "\e[1;32mRUNNING\e[0m: ${base} as ${TAG}"
         ${CMD} run \
                 --rm \
-                --userns=keep-id \
-                --volume "$(pwd)/..:/home/user/app:rw,z" \
+                --volume "$(pwd)/..:/home/user/app" \
                 --workdir "/home/user/app" \
                 --tty \
                 --interactive "${TAG}" \

.gitlab-ci/run-single-test.sh

@@ -1,32 +0,0 @@
-#!/usr/bin/sh
-#
-builddir=$1
-suite=$2
-unit=$3
-
-echo "** builddir: ${builddir}"
-echo "**    suite: ${suite}"
-echo "**     unit: ${unit}"
-
-export XDG_RUNTIME_DIR="$(mktemp -p $(pwd) -d xdg-runtime-XXXXXX)"
-
-weston --backend=headless-backend.so --socket=wayland-5 --idle-time=0 &
-compositor=$!
-
-export WAYLAND_DISPLAY=wayland-5
-
-meson test -C ${builddir} \
-            --print-errorlogs \
-            --setup=wayland \
-            --suite=${suite} \
-            --no-suite=failing \
-            --no-suite=flaky \
-            --no-suite=wayland_failing \
-            --no-suite=gsk-compare-broadway \
-            --verbose \
-            "${unit}"
-
-exit_code=$?
-kill ${compositor}
-
-exit ${exit_code}

.gitlab-ci/run-style-check-diff.sh

@@ -2,43 +2,25 @@
 
 set -e
 
-ancestor_horizon=31  # days (one month)
-
-# Recently, git is picky about directory ownership. Tell it not to worry.
-git config --global --add safe.directory "$PWD"
-
-# We need to add a new remote for the upstream target branch, since this script
-# could be running in a personal fork of the repository which has out of date
-# branches.
-#
-# Limit the fetch to a certain date horizon to limit the amount of data we get.
-# If the branch was forked from origin/main before this horizon, it should
-# probably be rebased.
-if ! git ls-remote --exit-code upstream >/dev/null 2>&1 ; then
+# We need to add a new remote for the upstream master, since this script could
+# be running in a personal fork of the repository which has out of date branches.
+if [ "${CI_PROJECT_NAMESPACE}" != "GNOME" ]; then
+    echo "Retrieving the current upstream repository from ${CI_PROJECT_NAMESPACE}/${CI_PROJECT_NAME}..."
     git remote add upstream https://gitlab.gnome.org/GNOME/gtk.git
+    git fetch upstream
+    ORIGIN="upstream"
+else
+    echo "Reusing the existing repository on ${CI_PROJECT_NAMESPACE}/${CI_PROJECT_NAME}"
+    ORIGIN="origin"
 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/glib-2-62`).
-# `${CI_MERGE_REQUEST_TARGET_BRANCH_NAME}` or `${CI_MERGE_REQUEST_SOURCE_BRANCH_NAME}`
-# are only defined if we’re running in a merge request pipeline,
-# fall back to `${CI_DEFAULT_BRANCH}` or `${CI_COMMIT_BRANCH}` respectively
-# otherwise.
-
-source_branch="${CI_MERGE_REQUEST_SOURCE_BRANCH_NAME:-${CI_COMMIT_BRANCH}}"
-target_branch="${CI_MERGE_REQUEST_TARGET_BRANCH_NAME:-${CI_DEFAULT_BRANCH}}"
-git fetch --shallow-since="$(date --date="${ancestor_horizon} days ago" +%Y-%m-%d)" origin "${source_branch}"
-git fetch --shallow-since="$(date --date="${ancestor_horizon} days ago" +%Y-%m-%d)" upstream "${target_branch}"
-
-newest_common_ancestor_sha=$(git merge-base upstream/${target_branch} origin/${source_branch})
-if [ -z "${newest_common_ancestor_sha}" ]; then
-    echo "Couldn’t find common ancestor with upstream main branch. This typically"
-    echo "happens if you branched from main a long time ago. Please update"
-    echo "your clone, rebase, and re-push your branch."
-    exit 1
-fi
-
+# `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.
+newest_common_ancestor_sha=$(diff --old-line-format='' --new-line-format='' <(git rev-list --first-parent "${ORIGIN}/${CI_MERGE_REQUEST_TARGET_BRANCH_NAME:-${CI_DEFAULT_BRANCH}}") <(git rev-list --first-parent HEAD) | head -1)
 git diff -U0 --no-color "${newest_common_ancestor_sha}" | .gitlab-ci/clang-format-diff.py -binary "clang-format" -p1
 exit_status=$?
 
@@ -54,7 +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.md"
+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."

.gitlab-ci/run-tests.sh

@@ -1,33 +1,23 @@
 #!/bin/bash
 
-set -x
+set +x
 set +e
 
 srcdir=$( pwd )
 builddir=$1
-setup=$2
-suite=$3
-multiplier=${MESON_TEST_TIMEOUT_MULTIPLIER:-1}
-n_processes=${MESON_TEST_MAX_PROCESSES:-1}
+backend=$2
 
 # Ignore memory leaks lower in dependencies
-export LSAN_OPTIONS=suppressions=$srcdir/lsan.supp:print_suppressions=0:detect_leaks=0:allocator_may_return_null=1
+export LSAN_OPTIONS=suppressions=$srcdir/lsan.supp
 
-case "${setup}" in
-  x11*)
-    dbus-run-session -- \
-       xvfb-run -a -s "-screen 0 1024x768x24 -noreset" \
+case "${backend}" in
+  x11)
+    xvfb-run -a -s "-screen 0 1024x768x24 -noreset" \
           meson test -C ${builddir} \
-                --quiet \
-                --timeout-multiplier "${multiplier}" \
-                --num-processes "${n_processes}" \
+                --timeout-multiplier "${MESON_TEST_TIMEOUT_MULTIPLIER}" \
                 --print-errorlogs \
-                --setup=${setup} \
-                --suite=${suite//,/ --suite=} \
-                --no-suite=failing \
-                --no-suite=${setup}_failing \
-                --no-suite=flaky \
-                --no-suite=headless \
+                --setup=${backend} \
+                --suite=gtk \
                 --no-suite=gsk-compare-broadway
 
     # Store the exit code for the CI run, but always
@@ -35,77 +25,58 @@ case "${setup}" in
     exit_code=$?
     ;;
 
-  wayland*)
+  wayland)
     export XDG_RUNTIME_DIR="$(mktemp -p $(pwd) -d xdg-runtime-XXXXXX)"
 
     weston --backend=headless-backend.so --socket=wayland-5 --idle-time=0 &
     compositor=$!
     export WAYLAND_DISPLAY=wayland-5
 
-    dbus-run-session -- \
-          meson test -C ${builddir} \
-                --quiet \
-                --timeout-multiplier "${multiplier}" \
-                --num-processes "${n_processes}" \
+    meson test -C ${builddir} \
+                --timeout-multiplier "${MESON_TEST_TIMEOUT_MULTIPLIER}" \
                 --print-errorlogs \
-                --setup=${setup} \
-                --suite=${suite//,/ --suite=} \
-                --no-suite=failing \
-                --no-suite=${setup}_failing \
-                --no-suite=flaky \
-                --no-suite=headless \
+                --setup=${backend} \
+                --suite=gtk \
                 --no-suite=gsk-compare-broadway
-    exit_code=$?
 
+    exit_code=$?
     kill ${compositor}
     ;;
 
-  broadway*)
+  broadway)
     export XDG_RUNTIME_DIR="$(mktemp -p $(pwd) -d xdg-runtime-XXXXXX)"
 
     ${builddir}/gdk/broadway/gtk4-broadwayd :5 &
     server=$!
     export BROADWAY_DISPLAY=:5
 
-    dbus-run-session -- \
-          meson test -C ${builddir} \
-                --quiet \
-                --timeout-multiplier "${multiplier}" \
-                --num-processes "${n_processes}" \
+    meson test -C ${builddir} \
+                --timeout-multiplier "${MESON_TEST_TIMEOUT_MULTIPLIER}" \
                 --print-errorlogs \
-                --setup=${setup} \
-                --suite=${suite//,/ --suite=} \
-                --no-suite=failing \
-                --no-suite=${setup}_failing \
-                --no-suite=flaky \
-                --no-suite=headless \
+                --setup=${backend} \
+                --suite=gtk \
                 --no-suite=gsk-compare-opengl
 
+    # don't let Broadway failures fail the run, for now
+    exit_code=0
     kill ${server}
     ;;
-
-  *)
-    echo "Failed to add ${setup} to .gitlab-ci/run-tests.sh"
-    exit 1
-    ;;
-
 esac
 
 cd ${builddir}
 
 $srcdir/.gitlab-ci/meson-junit-report.py \
-            --project-name=gtk \
-            --backend="${setup}" \
-            --job-id="${CI_JOB_NAME}" \
-            --output="report-${setup}.xml" \
-            "meson-logs/testlog-${setup}.json"
-
+        --project-name=gtk \
+        --backend=${backend} \
+        --job-id="${CI_JOB_NAME}" \
+        --output=report-${backend}.xml \
+        meson-logs/testlog-${backend}.json
 $srcdir/.gitlab-ci/meson-html-report.py \
-            --project-name=gtk \
-            --backend="${setup}" \
-            --job-id="${CI_JOB_NAME}" \
-            --reftest-output-dir="testsuite/reftests/output/${setup}" \
-            --output="report-${setup}.html" \
-            "meson-logs/testlog-${setup}.json"
+        --project-name=gtk \
+        --backend=${backend} \
+        --job-id="${CI_JOB_NAME}" \
+        --reftest-output-dir="testsuite/reftests/output/${backend}" \
+        --output=report-${backend}.html \
+        meson-logs/testlog-${backend}.json
 
 exit $exit_code

.gitlab-ci/show-info-linux.sh

@@ -1,5 +0,0 @@
-#! /bin/sh
-
-. /etc/os-release
-
-echo $PRETTY_NAME

.gitlab-ci/show-info-macos.sh

@@ -1,13 +0,0 @@
-#!/bin/bash
-
-set -eux -o pipefail
-
-xcodebuild -version || :
-
-if [ -z "$SDKROOT" ]; then
-  xcodebuild -showsdks || :
-else
-  echo "SDKROOT = $SDKROOT"
-fi
-
-system_profiler SPSoftwareDataType || :

.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:-} \

.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~=0.64 || goto :error
-meson setup -Dbackend_max_links=1 -Ddebug=false -Dmedia-gstreamer=disabled -Dvulkan=disabled _build || goto :error
-ninja -C _build || goto :error
-
-goto :EOF
-:error
-exit /b 1

.gitlab-ci/test-msys2.sh

@@ -2,6 +2,12 @@
 
 set -e
 
+if [[ "$MSYSTEM" == "MINGW32" ]]; then
+    export MSYS2_ARCH="i686"
+else
+    export MSYS2_ARCH="x86_64"
+fi
+
 # Update everything
 pacman --noconfirm -Suy
 
@@ -9,40 +15,56 @@ pacman --noconfirm -Suy
 pacman --noconfirm -S --needed \
     base-devel \
     git \
-    ${MINGW_PACKAGE_PREFIX}-cc \
-    ${MINGW_PACKAGE_PREFIX}-ccache \
-    ${MINGW_PACKAGE_PREFIX}-pkgconf \
-    ${MINGW_PACKAGE_PREFIX}-gobject-introspection \
-    ${MINGW_PACKAGE_PREFIX}-meson \
-    ${MINGW_PACKAGE_PREFIX}-adwaita-icon-theme \
-    ${MINGW_PACKAGE_PREFIX}-atk \
-    ${MINGW_PACKAGE_PREFIX}-cairo \
-    ${MINGW_PACKAGE_PREFIX}-gdk-pixbuf2 \
-    ${MINGW_PACKAGE_PREFIX}-glib2 \
-    ${MINGW_PACKAGE_PREFIX}-graphene \
-    ${MINGW_PACKAGE_PREFIX}-json-glib \
-    ${MINGW_PACKAGE_PREFIX}-libepoxy \
-    ${MINGW_PACKAGE_PREFIX}-pango \
-    ${MINGW_PACKAGE_PREFIX}-fribidi \
-    ${MINGW_PACKAGE_PREFIX}-gst-plugins-bad-libs \
-    ${MINGW_PACKAGE_PREFIX}-shared-mime-info \
-    ${MINGW_PACKAGE_PREFIX}-python-gobject \
-    ${MINGW_PACKAGE_PREFIX}-shaderc \
-    ${MINGW_PACKAGE_PREFIX}-vulkan \
-    ${MINGW_PACKAGE_PREFIX}-vulkan-headers
+    mingw-w64-$MSYS2_ARCH-toolchain \
+    mingw-w64-$MSYS2_ARCH-ccache \
+    mingw-w64-$MSYS2_ARCH-pkg-config \
+    mingw-w64-$MSYS2_ARCH-gobject-introspection \
+    mingw-w64-$MSYS2_ARCH-meson \
+    mingw-w64-$MSYS2_ARCH-adwaita-icon-theme \
+    mingw-w64-$MSYS2_ARCH-atk \
+    mingw-w64-$MSYS2_ARCH-cairo \
+    mingw-w64-$MSYS2_ARCH-gdk-pixbuf2 \
+    mingw-w64-$MSYS2_ARCH-glib2 \
+    mingw-w64-$MSYS2_ARCH-graphene \
+    mingw-w64-$MSYS2_ARCH-json-glib \
+    mingw-w64-$MSYS2_ARCH-libepoxy \
+    mingw-w64-$MSYS2_ARCH-pango \
+    mingw-w64-$MSYS2_ARCH-fribidi \
+    mingw-w64-$MSYS2_ARCH-gst-plugins-bad \
+    mingw-w64-$MSYS2_ARCH-shared-mime-info
 
 mkdir -p _ccache
 export CCACHE_BASEDIR="$(pwd)"
 export CCACHE_DIR="${CCACHE_BASEDIR}/_ccache"
 
+# https://gitlab.gnome.org/GNOME/gtk/-/issues/2243
+# https://gitlab.gnome.org/GNOME/gtk/-/issues/3002
+
+if ! pkg-config --atleast-version=2.65.0 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=1.47.0 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
-meson setup \
+meson \
     -Dx11-backend=false \
     -Dwayland-backend=false \
     -Dwin32-backend=true \
+    -Dvulkan=disabled \
     -Dintrospection=enabled \
     -Dgtk:werror=true \
     _build
@@ -50,5 +72,3 @@ unset CCACHE_DISABLE
 
 ninja -C _build
 ccache --show-stats
-
-tar zcf _build/gtkdll.tar.gz _build/gtk/libgtk*.dll

.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. ...
@@ -34,17 +25,12 @@
 <!--
  - Which version of GTK you are using
  - What operating system and version
- - What windowing system (X11 or Wayland)
- - What graphics driver / mesa version
- - For Linux, which distribution
+  - For Linux, which distribution
  - If you built GTK yourself, the list of options used to configure the build
 -->
 
 ## Additional information
 <!--
  - Screenshots or screen recordings are useful for visual errors
-  - 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
 -->

.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. ...

AUTHORS

@@ -7,7 +7,7 @@ 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 Team that build GTK 2 (in alphabetical order)
 -------------------------------------------------
 Shawn T. Amundson <amundson@gtk.org>
 Jerome Bolliet    <bolliet@gtk.org>
@@ -28,8 +28,9 @@ Jay Painter       <jpaint@gtk.org>
 Manish Singh      <manish@gtk.org>
 Owen Taylor       <otaylor@gtk.org>
 
-The team that built GTK 3
--------------------------
+The current team (GTK 3 and 4)
+------------------------------
+
 Jonas Ådahl       <jadahl@gmail.com>
 Tim Bäder         <mail@baedert.org>
 Emmanuele Bassi   <ebassi@gnome.org>
@@ -39,16 +40,6 @@ Carlos Garnacho   <mrgarnacho@gmail.com>
 Alexander Larsson <alexl@redhat.com>
 Benjamin Otte     <otte@gnome.org>
 
-The current team (GTK 4)
-------------------------
-Jonas Ådahl       <jadahl@gmail.com>
-Emmanuele Bassi   <ebassi@gnome.org>
-Christian Hergert <chergert@gnome.org>
-Chun-wei Fan      <fanchunwei@src.gnome.org>
-Matthias Clasen   <mclasen@redhat.com>
-Carlos Garnacho   <mrgarnacho@gmail.com>
-Benjamin Otte     <otte@gnome.org>
-
 
 There are many others who have contributed patches; we thank them,
 GTK is much better because of them.
@@ -58,15 +49,35 @@ Over time, GTK has incorporated some pieces of software which
 started as independent projects. We list the original authors here:
 
 
+MS-Windows theme engine
+-----------------------
+Raymond Penners
+Dom Lachowicz
+
+
+Pixbuf theme engine
+-------------------
+Owen Taylor
+
+
 IME input method
 ----------------
 Takuro Ashie
 Kazuki IWAMOTO
 
-MacOS backend
--------------
+
+Mac OS X backend
+----------------
 Anders Carlsson
 
-GtkInspector (originally gtkparasite)
--------------------------------------
+
+DirectFB backend
+----------------
+Denis Oliver Kropp
+Sven Neumann
+Mike Emmel
+
+
+gtkparasite
+-----------
 Christian Hammond

CONTRIBUTING.md

@@ -21,7 +21,7 @@ many things that we value:
 Please, do not use the issue tracker for support questions. If you have
 questions on how to use GTK effectively, you can use:
 
- - the `gtk` [room on matrix](https://matrix.to/#/#gtk:gnome.org)
+ - the `#gtk` IRC channel on irc.gnome.org
  - the [gtk tag on the GNOME Discourse instance](https://discourse.gnome.org/tag/gtk)
 
 You can also look at the GTK tag on [Stack
@@ -35,7 +35,8 @@ The issue tracker is meant to be used for actionable issues only.
 
 You should not open a new issue for security related questions.
 
-When in doubt, follow the process for [GNOME security issues](https://security.gnome.org/).
+When in doubt, send an email to the [security](mailto:security@gnome.org)
+mailing list.
 
 ### Bug reports
 
@@ -43,7 +44,6 @@ If you're reporting a bug make sure to list:
 
  0. which version of GTK are you using?
  0. which operating system are you using?
- 0. what display and graphics driver are you using?
  0. the necessary steps to reproduce the issue
  0. the expected outcome
  0. a description of the behavior; screenshots are also welcome
@@ -100,16 +100,14 @@ development tools appropriate for your operating system, including:
  - Meson
  - Ninja
  - Gettext (19.7 or newer)
- - a [C99 compatible compiler][glib-toolchain-reqs]
+ - a [C99 compatible compiler](https://wiki.gnome.org/Projects/GLib/CompilerRequirements)
 
 Up-to-date instructions about developing GNOME applications and libraries
 can be found on [the GNOME Developer Center](https://developer.gnome.org).
 
 The GTK project uses GitLab for code hosting and for tracking issues. More
-information about using GitLab can be found on [the GNOME handbook][handbook].
-
-[glib-toolchain-reqs]: https://gitlab.gnome.org/GNOME/glib/-/blob/main/docs/toolchain-requirements.md
-[handbook]: https://handbook.gnome.org/infrastructure/gitlab.html
+information about using GitLab can be found [on the GNOME
+wiki](https://wiki.gnome.org/GitLab).
 
 ### Dependencies
 
@@ -133,7 +131,7 @@ GTK will attempt to download and build some of these dependencies if it
 cannot find them on your system.
 
 Additionally, you may want to look at projects that create a development
-environment for you, like [jhbuild](https://gitlab.gnome.org/GNOME/jhbuild)
+environment for you, like [jhbuild](https://wiki.gnome.org/HowDoI/Jhbuild)
 and [gvsbuild](https://github.com/wingtk/gvsbuild).
 
 ### Getting started
@@ -146,28 +144,33 @@ $ git clone https://gitlab.gnome.org/yourusername/gtk.git
 $ cd gtk
 ```
 
+**Note**: if you plan to push changes to back to the main repository and
+have a GNOME account, you can skip the fork, and use the following instead:
+
+```sh
+$ git clone git@gitlab.gnome.org:GNOME/gtk.git
+$ cd gtk
+```
+
 To compile the Git version of GTK on your system, you will need to
 configure your build using Meson:
 
 ```sh
-$ meson setup _builddir .
-$ meson compile -C _builddir
+$ meson _builddir .
+$ cd _builddir
+$ ninja
 ```
 
 Typically, you should work on your own branch:
 
 ```sh
-$ git switch -C your-branch
+$ git checkout -b your-branch
 ```
 
 Once you've finished working on the bug fix or feature, push the branch
 to the Git repository and open a new merge request, to let the GTK
 maintainers review your contribution.
 
-**Important**: Do **not** attach a diff or a patch file to a GitLab issue.
-Patches cannot be reviewed, and do not not go through the CI pipeline. If
-you wish to submit your changes to GTK, always use a merge request.
-
 ### Code reviews
 
 Each contribution is reviewed by the core developers of the GTK project.
@@ -210,7 +213,7 @@ Closes #1234
  `git commit -a --author "Joe Coder <joe@coder.org>"` and `--signoff`.
 
  - If your commit is addressing an issue, use the
- [GitLab syntax](https://docs.gitlab.com/ee/user/project/issues/managing_issues.html#closing-issues-automatically)
+ [GitLab syntax](https://docs.gitlab.com/ce/user/project/issues/automatic_issue_closing.html)
  to automatically close the issue when merging the commit with the upstream
  repository:
 
@@ -240,18 +243,20 @@ people committing to GTK to follow a few rules:
    code, you should always ask. If your change is minor and you've been
    working on GTK for a while it probably isn't necessary to ask. But when
    in doubt, ask. Even if your change is correct, somebody may know a
-   better way to do things.
-   The `gtk` [room on matrix](https://matrix.to/#/#gtk:gnome.org) is also a
-   good place to find GTK developers to discuss changes, but if you live
-   outside of the EU/US time zones, the [gtk tag on the GNOME Discourse instance](https://discourse.gnome.org/tag/gtk)
-   is the most certain and preferred method.
+   better way to do things. If you are making changes to GTK, you should
+   be subscribed to the [gtk-devel](https://mail.gnome.org/mailman/listinfo/gtk-devel-list)
+   mailing list; this is a good place to ask about intended changes.
+   The `#gtk` IRC channel on irc.gnome.org is also a good place to find GTK
+   developers to discuss changes, but if you live outside of the EU/US time
+   zones, an email to the gtk-devel mailing list is the most certain and
+   preferred method.
 
 0. Ask _first_.
 
 0. Always write a meaningful commit message. Changes without a sufficient
    commit message will be reverted.
 
-0. Never push to the `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
@@ -259,4 +264,4 @@ people committing to GTK to follow a few rules:
 
 If you have been contributing to GTK for a while and you don't have commit
 access to the repository, you may ask to obtain it following the [GNOME account
-process](https://handbook.gnome.org/infrastructure/developer-access.html).
+process](https://wiki.gnome.org/AccountsTeam/NewAccounts).

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/pipeline.svg)](https://gitlab.gnome.org/GNOME/gtk/-/commits/master)
 
 General information
 -------------------
@@ -10,12 +10,10 @@ 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
 
@@ -34,26 +32,16 @@ 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://nightly.gnome.org/) repository:
-
-```sh
-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
 -----------------------
 
 In order to build GTK you will need:
 
-  - [a C11 compatible compiler](https://gitlab.gnome.org/GNOME/glib/-/blob/main/docs/toolchain-requirements.md)
+  - [a C99 compatible compiler](https://wiki.gnome.org/Projects/GLib/CompilerRequirements)
   - [Python 3](https://www.python.org/)
   - [Meson](http://mesonbuild.com)
   - [Ninja](https://ninja-build.org)
@@ -70,13 +58,6 @@ building for:
   - [Graphene](https://github.com/ebassi/graphene)
   - [Xkb-common](https://github.com/xkbcommon/libxkbcommon)
 
-If you are building the Wayland backend, you will also need:
-
-  - Wayland-client
-  - Wayland-protocols
-  - Wayland-cursor
-  - Wayland-EGL
-
 If you are building the X11 backend, you will also need:
 
   - Xlib, and the following X extensions:
@@ -89,24 +70,32 @@ If you are building the X11 backend, you will also need:
     - xdamage
     - xcomposite
 
+If you are building the Wayland backend, you will also need:
+
+  - Wayland-client
+  - Wayland-protocols
+  - Wayland-cursor
+  - Wayland-EGL
+
 Once you have all the necessary dependencies, you can build GTK by using
 Meson:
 
 ```sh
-$ meson setup _build
-$ meson compile -C_build
+$ meson _build .
+$ cd _build
+$ ninja
 ```
 
 You can run the test suite using:
 
 ```sh
-$ meson test -C_build
+$ meson test
 ```
 
 And, finally, you can install GTK using:
 
 ```
-$ sudo meson install -C_build
+$ sudo ninja install
 ```
 
 Complete information about installing GTK and related libraries
@@ -116,19 +105,12 @@ can be found in the file:
 docs/reference/gtk/html/gtk-building.html
 ```
 
-Or [online](https://docs.gtk.org/gtk4/building.html)
-
-Building from git
------------------
-
-The GTK sources are hosted on [gitlab.gnome.org](http://gitlab.gnome.org). The main
-development branch is called `main`, and stable branches are named after their minor
-version, for example `gtk-4-10`.
+Or [online](https://developer.gnome.org/gtk4/stable/gtk-building.html)
 
 How to report bugs
 ------------------
 
-Bugs should be reported on the [issues page](https://gitlab.gnome.org/GNOME/gtk/issues/).
+Bugs should be reported on the [issues page](https://gitlab.gnome.org/GNOME/gtk/issues/new).
 
 In the bug report please include:
 
@@ -136,13 +118,9 @@ In the bug report please include:
 
    - which version of GTK you are using
    - what operating system and version
-   - what windowing system (X11 or Wayland)
-   - what graphics driver / mesa version
    - for Linux, which distribution
    - if you built GTK, the list of options used to configure the build
 
-  Most of this information can be found in the GTK inspector.
-
   And anything else you think is relevant.
 
 * How to reproduce the bug.
@@ -166,17 +144,14 @@ 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
 ---------------

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

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

@@ -35,16 +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",
-                    "branch" : "main"
+                    "url" : "https://github.com/wayland-project/wayland.git"
                 }
             ]
         },
@@ -54,7 +53,8 @@
             "builddir" : true,
             "config-opts" : [
                 "--libdir=/app/lib",
-                "-Dtests=false"
+                "-Dtests=false",
+                "-Dbenchmarks=false"
             ],
             "sources" : [
                 {
@@ -93,106 +93,19 @@
                 }
             ]
         },
-        {
-            "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/1.79.0/source/boost_1_79_0.tar.bz2",
-                     "sha256": "475d589d51a7f8b3ba2ba4eda022b170e562ca3b760ee922c146b6c65856ef39"
-                 }
-            ]
-        },
-        {
-            "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 $FLATPAK_DEST/lib/pkgconfig/lua-5.1.pc"
-            ],
-            "sources": [
-                {
-                    "type": "archive",
-                    "url": "https://www.lua.org/ftp/lua-5.1.5.tar.gz",
-                    "sha256": "2640fc56a795f29d28ef15e13c34a47e223960b0240e8cb0a82d9b0738695333"
-                },
-                {
-                    "type": "patch",
-                    "path": "lua-5.1.5-so.patch"
-                },
-                {
-                    "type": "shell",
-                    "commands": [
-                        "sed -i \"s|/usr/local|$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",
-                "-Dbuildtype=debugoptimized",
-                "-Dprofile=devel"
+                "-Denable_vulkan=no",
+                "-Dbuildtype=debugoptimized"
             ],
             "sources" : [
                 {
                     "type" : "git",
-                    "url" : "https://gitlab.gnome.org/GNOME/gtk.git",
-                    "branch" : "main"
+                    "url" : "https://gitlab.gnome.org/GNOME/gtk.git"
                 }
             ]
         }

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

@@ -35,16 +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",
-                    "branch" : "main"
+                    "url" : "https://github.com/wayland-project/wayland.git"
                 }
             ]
         },
@@ -54,7 +53,8 @@
             "builddir" : true,
             "config-opts" : [
                 "--libdir=/app/lib",
-                "-Dtests=false"
+                "-Dtests=false",
+                "-Dbenchmarks=false"
             ],
             "sources" : [
                 {
@@ -93,35 +93,19 @@
                 }
             ]
         },
-        {
-            "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",
-                "-Dbuildtype=debugoptimized",
-                "-Dprofile=devel"
+                "-Denable_vulkan=no",
+                "-Dbuildtype=debugoptimized"
             ],
             "sources" : [
                 {
                     "type" : "git",
-                    "url" : "https://gitlab.gnome.org/GNOME/gtk.git",
-                    "branch" : "main"
+                    "url" : "https://gitlab.gnome.org/GNOME/gtk.git"
                 }
             ]
         }

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

@@ -35,16 +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",
-                    "branch" : "main"
+                    "url" : "https://github.com/wayland-project/wayland.git"
                 }
             ]
         },
@@ -54,7 +53,8 @@
             "builddir" : true,
             "config-opts" : [
                 "--libdir=/app/lib",
-                "-Dtests=false"
+                "-Dtests=false",
+                "-Dbenchmarks=false"
             ],
             "sources" : [
                 {
@@ -93,35 +93,19 @@
                 }
             ]
         },
-        {
-            "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",
-                "-Dbuildtype=debugoptimized",
-                "-Dprofile=devel"
+                "-Denable_vulkan=no",
+                "-Dbuildtype=debugoptimized"
             ],
             "sources" : [
                 {
                     "type" : "git",
-                    "url" : "https://gitlab.gnome.org/GNOME/gtk.git",
-                    "branch" : "main"
+                    "url" : "https://gitlab.gnome.org/GNOME/gtk.git"
                 }
             ]
         }
@@ -130,6 +114,7 @@
         "env" : {
             "DBUS_SESSION_BUS_ADDRESS" : "''",
             "GSK_RENDERER" : "opengl",
+            "GDK_DEBUG" : "vulkan-disable",
             "G_ENABLE_DEBUG" : "true"
         }
     }

build-aux/flatpak/org.gtk.gtk4.NodeEditor.json

@@ -1,136 +0,0 @@
-{
-    "app-id" : "org.gtk.gtk4.NodeEditor",
-    "runtime" : "org.gnome.Platform",
-    "runtime-version" : "master",
-    "sdk" : "org.gnome.Sdk",
-    "command" : "gtk4-node-editor",
-    "tags" : [
-        "devel",
-        "development",
-        "nightly"
-    ],
-    "desktop-file-name-prefix" : "(Development) ",
-    "finish-args" : [
-        "--device=dri",
-        "--share=ipc",
-        "--socket=fallback-x11",
-        "--socket=wayland",
-        "--talk-name=org.gtk.vfs",
-        "--talk-name=org.gtk.vfs.*"
-    ],
-    "cleanup" : [
-        "/include",
-        "/lib/pkgconfig",
-        "/share/pkgconfig",
-        "/share/aclocal",
-        "/man",
-        "/share/man",
-        "/share/gtk-doc",
-        "*.la",
-        ".a",
-        "/lib/girepository-1.0",
-        "/share/gir-1.0",
-        "/share/doc"
-    ],
-    "modules" : [
-        {
-            "name" : "wayland",
-            "buildsystem" : "meson",
-            "builddir" : true,
-            "config-opts" : [
-                "-Ddocumentation=false"
-            ],
-            "sources" : [
-                {
-                    "type" : "git",
-                    "url" : "https://gitlab.freedesktop.org/wayland/wayland.git",
-                    "branch" : "main"
-                }
-            ]
-        },
-        {
-            "name" : "graphene",
-            "buildsystem" : "meson",
-            "builddir" : true,
-            "config-opts" : [
-                "--libdir=/app/lib",
-                "-Dtests=false"
-            ],
-            "sources" : [
-                {
-                    "type" : "git",
-                    "url" : "https://github.com/ebassi/graphene.git"
-                }
-            ]
-        },
-        {
-            "name" : "libsass",
-            "buildsystem" : "meson",
-            "builddir" : true,
-            "config-opts" : [
-                "--libdir=/app/lib"
-            ],
-            "sources" : [
-                {
-                    "type" : "git",
-                    "url" : "https://github.com/lazka/libsass.git",
-                    "branch" : "meson"
-                }
-            ]
-        },
-        {
-            "name" : "sassc",
-            "buildsystem" : "meson",
-            "builddir" : true,
-            "config-opts" : [
-                "--libdir=/app/lib"
-            ],
-            "sources" : [
-                {
-                    "type" : "git",
-                    "url" : "https://github.com/lazka/sassc.git",
-                    "branch" : "meson"
-                }
-            ]
-        },
-        {
-            "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",
-                "-Dbuildtype=debugoptimized",
-                "-Dprofile=devel"
-            ],
-            "sources" : [
-                {
-                    "type" : "git",
-                    "url" : "https://gitlab.gnome.org/GNOME/gtk.git",
-                    "branch" : "main"
-                }
-            ]
-        }
-    ],
-    "build-options" : {
-        "env" : {
-            "DBUS_SESSION_BUS_ADDRESS" : "''",
-            "GSK_RENDERER" : "opengl",
-            "G_ENABLE_DEBUG" : "true"
-        }
-    }
-}

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)

build-aux/meson/gen-profile-conf.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")

build-aux/meson/gen-visibility-macros.py

@@ -1,201 +0,0 @@
-#!/usr/bin/env python3
-#
-# SPDX-FileCopyrightText: 2022 Collabora Inc.
-#                         2023 Emmanuele Bassi
-#
-# SPDX-License-Identifier: LGPL-2.1-or-later
-#
-# Original author: Xavier Claessens <xclaesse@gmail.com>
-
-import argparse
-import textwrap
-from pathlib import Path
-
-
-# Disable line length warnings as wrapping the C code templates would be hard
-# flake8: noqa: E501
-
-
-def gen_versions_macros(args, current_major_version, current_minor_version, current_micro_version):
-    with args.out_path.open("w", encoding="utf-8") as ofile, args.in_path.open(
-        "r", encoding="utf-8"
-    ) as ifile:
-        for line in ifile.readlines():
-            if "@GDK_VERSIONS@" in line:
-                ofile.write(
-                    textwrap.dedent(
-                        f"""\
-                    /**
-                     * GDK_MAJOR_VERSION:
-                     *
-                     * The major version component of the library's version, e.g. "1" for "1.2.3".
-                     */
-                    #define GDK_MAJOR_VERSION ({current_major_version})
-
-                    /**
-                     * GDK_MINOR_VERSION:
-                     *
-                     * The minor version component of the library's version, e.g. "2" for "1.2.3".
-                     */
-                    #define GDK_MINOR_VERSION ({current_minor_version})
-
-                    /**
-                     * GDK_MICRO_VERSION:
-                     *
-                     * The micro version component of the library's version, e.g. "3" for "1.2.3".
-                     */
-                    #define GDK_MICRO_VERSION ({current_micro_version})
-                        """
-                        )
-                    )
-                for minor in range(0, current_minor_version + 2, 2):
-                    ofile.write(
-                        textwrap.dedent(
-                            f"""\
-                        /**
-                         * GDK_VERSION_{current_major_version}_{minor}:
-                         *
-                         * A macro that evaluates to the {current_major_version}.{minor} version of GTK, in a format
-                         * that can be used by the C pre-processor.
-                         *
-                         * Since: {current_major_version}.{minor}
-                         */
-                        #define GDK_VERSION_{current_major_version}_{minor} (G_ENCODE_VERSION ({current_major_version}, {minor}))
-                        """
-                        )
-                    )
-            else:
-                ofile.write(line)
-
-
-def gen_visibility_macros(args, current_major_version, current_minor_version, current_micro_version):
-    """
-    Generates a set of macros for each minor stable version of GTK
-
-    - GDK_DEPRECATED
-    - GDK_DEPRECATED_IN_…
-    - GDK_DEPRECATED_MACRO_IN_…
-    - GDK_DEPRECATED_ENUMERATOR_IN_…
-    - GDK_DEPRECATED_TYPE_IN_…
-
-    - GDK_AVAILABLE_IN_ALL
-    - GDK_AVAILABLE_IN_…
-    - GDK_AVAILABLE_STATIC_INLINE_IN_…
-    - GDK_AVAILABLE_MACRO_IN_…
-    - GDK_AVAILABLE_ENUMERATOR_IN_…
-    - GDK_AVAILABLE_TYPE_IN_…
-
-    - GDK_UNAVAILABLE(maj,min)
-    - GDK_UNAVAILABLE_STATIC_INLINE(maj,min)
-    """
-
-    ns = args.namespace
-    with args.out_path.open("w", encoding="utf-8") as f:
-        f.write(
-            textwrap.dedent(
-                f"""\
-            #pragma once
-
-            #if (defined(_WIN32) || defined(__CYGWIN__)) && !defined({ns}_STATIC_COMPILATION)
-            #  define _{ns}_EXPORT __declspec(dllexport)
-            #  define _{ns}_IMPORT __declspec(dllimport)
-            #elif __GNUC__ >= 4
-            #  define _{ns}_EXPORT __attribute__((visibility("default")))
-            #  define _{ns}_IMPORT
-            #else
-            #  define _{ns}_EXPORT
-            #  define _{ns}_IMPORT
-            #endif
-            #ifdef GTK_COMPILATION
-            #  define _{ns}_API _{ns}_EXPORT
-            #else
-            #  define _{ns}_API _{ns}_IMPORT
-            #endif
-
-            #define _{ns}_EXTERN _{ns}_API extern
-
-            #define {ns}_VAR _{ns}_EXTERN
-            #define {ns}_AVAILABLE_IN_ALL _{ns}_EXTERN
-
-            #ifdef GDK_DISABLE_DEPRECATION_WARNINGS
-            #define {ns}_DEPRECATED _{ns}_EXTERN
-            #define {ns}_DEPRECATED_FOR(f) _{ns}_EXTERN
-            #define {ns}_UNAVAILABLE(maj,min) _{ns}_EXTERN
-            #define {ns}_UNAVAILABLE_STATIC_INLINE(maj,min)
-            #else
-            #define {ns}_DEPRECATED G_DEPRECATED _{ns}_EXTERN
-            #define {ns}_DEPRECATED_FOR(f) G_DEPRECATED_FOR(f) _{ns}_EXTERN
-            #define {ns}_UNAVAILABLE(maj,min) G_UNAVAILABLE(maj,min) _{ns}_EXTERN
-            #define {ns}_UNAVAILABLE_STATIC_INLINE(maj,min) G_UNAVAILABLE(maj,min)
-            #endif
-            """
-            )
-        )
-        for minor in range(0, current_minor_version + 2, 2):
-            f.write(
-                textwrap.dedent(
-                    f"""
-                #if GDK_VERSION_MIN_REQUIRED >= GDK_VERSION_4_{minor}
-                #define {ns}_DEPRECATED_IN_{current_major_version}_{minor} {ns}_DEPRECATED
-                #define {ns}_DEPRECATED_IN_{current_major_version}_{minor}_FOR(f) {ns}_DEPRECATED_FOR (f)
-                #define {ns}_DEPRECATED_MACRO_IN_{current_major_version}_{minor} GDK_DEPRECATED_MACRO
-                #define {ns}_DEPRECATED_MACRO_IN_{current_major_version}_{minor}_FOR(f) GDK_DEPRECATED_MACRO_FOR (f)
-                #define {ns}_DEPRECATED_ENUMERATOR_IN_{current_major_version}_{minor} GDK_DEPRECATED_ENUMERATOR
-                #define {ns}_DEPRECATED_ENUMERATOR_IN_{current_major_version}_{minor}_FOR(f) GDK_DEPRECATED_ENUMERATOR_FOR (f)
-                #define {ns}_DEPRECATED_TYPE_IN_{current_major_version}_{minor} GDK_DEPRECATED_TYPE
-                #define {ns}_DEPRECATED_TYPE_IN_{current_major_version}_{minor}_FOR(f) GDK_DEPRECATED_TYPE_FOR (f)
-                #else
-                #define {ns}_DEPRECATED_IN_{current_major_version}_{minor} _{ns}_EXTERN
-                #define {ns}_DEPRECATED_IN_{current_major_version}_{minor}_FOR(f) _{ns}_EXTERN
-                #define {ns}_DEPRECATED_MACRO_IN_{current_major_version}_{minor}
-                #define {ns}_DEPRECATED_MACRO_IN_{current_major_version}_{minor}_FOR(f)
-                #define {ns}_DEPRECATED_ENUMERATOR_IN_{current_major_version}_{minor}
-                #define {ns}_DEPRECATED_ENUMERATOR_IN_{current_major_version}_{minor}_FOR(f)
-                #define {ns}_DEPRECATED_TYPE_IN_{current_major_version}_{minor}
-                #define {ns}_DEPRECATED_TYPE_IN_{current_major_version}_{minor}_FOR(f)
-                #endif
-
-                #if GDK_VERSION_MAX_ALLOWED < GDK_VERSION_{current_major_version}_{minor}
-                #define {ns}_AVAILABLE_IN_{current_major_version}_{minor} {ns}_UNAVAILABLE ({current_major_version}, {minor})
-                #define {ns}_AVAILABLE_STATIC_INLINE_IN_{current_major_version}_{minor} GDK_UNAVAILABLE_STATIC_INLINE ({current_major_version}, {minor})
-                #define {ns}_AVAILABLE_MACRO_IN_{current_major_version}_{minor} GDK_UNAVAILABLE_MACRO ({current_major_version}, {minor})
-                #define {ns}_AVAILABLE_ENUMERATOR_IN_{current_major_version}_{minor} GDK_UNAVAILABLE_ENUMERATOR ({current_major_version}, {minor})
-                #define {ns}_AVAILABLE_TYPE_IN_{current_major_version}_{minor} GDK_UNAVAILABLE_TYPE ({current_major_version}, {minor})
-                #else
-                #define {ns}_AVAILABLE_IN_{current_major_version}_{minor} _{ns}_EXTERN
-                #define {ns}_AVAILABLE_STATIC_INLINE_IN_{current_major_version}_{minor}
-                #define {ns}_AVAILABLE_MACRO_IN_{current_major_version}_{minor}
-                #define {ns}_AVAILABLE_ENUMERATOR_IN_{current_major_version}_{minor}
-                #define {ns}_AVAILABLE_TYPE_IN_{current_major_version}_{minor}
-                #endif
-                """
-                )
-            )
-
-
-def main():
-    parser = argparse.ArgumentParser()
-    parser.add_argument("gtk_version", help="Current GLib version")
-    subparsers = parser.add_subparsers()
-
-    versions_parser = subparsers.add_parser(
-        "versions-macros", help="Generate versions macros"
-    )
-    versions_parser.add_argument("in_path", help="input file", type=Path)
-    versions_parser.add_argument("out_path", help="output file", type=Path)
-    versions_parser.set_defaults(func=gen_versions_macros)
-
-    visibility_parser = subparsers.add_parser(
-        "visibility-macros", help="Generate visibility macros"
-    )
-    visibility_parser.add_argument("namespace", help="Macro namespace")
-    visibility_parser.add_argument("out_path", help="output file", type=Path)
-    visibility_parser.set_defaults(func=gen_visibility_macros)
-
-    args = parser.parse_args()
-    version = [int(i) for i in args.gtk_version.split(".")]
-    args.func(args, version[0], version[1], version[2])
-
-
-if __name__ == "__main__":
-    main()

build-aux/meson/post-install.py

@@ -0,0 +1,45 @@
+#!/usr/bin/env python3
+
+import os
+import sys
+import subprocess
+
+if 'DESTDIR' not in os.environ:
+    gtk_api_version = sys.argv[1]
+    gtk_abi_version = sys.argv[2]
+    gtk_libdir = sys.argv[3]
+    gtk_datadir = sys.argv[4]
+    gtk_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...')
+    glib_compile_schemas = subprocess.check_output(['pkg-config',
+                                                   '--variable=glib_compile_schemas',
+                                                   'gio-2.0']).strip()
+    if not os.path.exists(glib_compile_schemas):
+        # 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.makedirs(gtk_printmodule_dir, exist_ok=True)
+    gio_querymodules = subprocess.check_output(['pkg-config',
+                                                '--variable=gio_querymodules',
+                                                'gio-2.0']).strip()
+    if not os.path.exists(gio_querymodules):
+        # 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...')
+    os.makedirs(gtk_immodule_dir, exist_ok=True)
+    subprocess.call([gio_querymodules, gtk_immodule_dir])

build-aux/msvc/msvc_recommended_pragmas.h

@@ -1,41 +0,0 @@
-#ifndef _MSC_VER
-#pragma error "This header is for Microsoft VC or clang-cl only."
-#endif /* _MSC_VER */
-
-/* Make MSVC more pedantic, this is a recommended pragma list
- * from _Win32_Programming_ by Rector and Newcomer.
- */
-#ifndef __clang__
-#pragma warning(error:4002) /* too many actual parameters for macro */
-#pragma warning(error:4003) /* not enough actual parameters for macro */
-#pragma warning(1:4010)     /* single-line comment contains line-continuation character */
-#pragma warning(error:4013) /* 'function' undefined; assuming extern returning int */
-#pragma warning(1:4016)     /* no function return type; using int as default */
-#pragma warning(error:4020) /* too many actual parameters */
-#pragma warning(error:4021) /* too few actual parameters */
-#pragma warning(error:4027) /* function declared without formal parameter list */
-#pragma warning(error:4029) /* declared formal parameter list different from definition */
-#pragma warning(error:4033) /* 'function' must return a value */
-#pragma warning(error:4035) /* 'function' : no return value */
-#pragma warning(error:4045) /* array bounds overflow */
-#pragma warning(error:4047) /* different levels of indirection */
-#pragma warning(error:4049) /* terminating line number emission */
-#pragma warning(error:4053) /* An expression of type void was used as an operand */
-#pragma warning(error:4071) /* no function prototype given */
-#pragma warning(disable:4101) /* unreferenced local variable */
-#pragma warning(error:4150)
-
-/* G_NORETURN */
-#pragma warning(error:4646) /* function declared with __declspec(noreturn) has non-void return type */
-#pragma warning(error:4715) /* 'function': not all control paths return a value */
-#pragma warning(error:4098) /* 'void' function returning a value */
-
-#pragma warning(disable:4244)	/* No possible loss of data warnings */
-#pragma warning(disable:4305)   /* No truncation from int to char warnings */
-
-#pragma warning(error:4819) /* The file contains a character that cannot be represented in the current code page */
-#endif                      /* __clang__ */
-
-/* work around Microsoft's premature attempt to deprecate the C-Library */
-#define _CRT_SECURE_NO_WARNINGS
-#define _CRT_NONSTDC_NO_WARNINGS

config.h.meson

@@ -0,0 +1,281 @@
+/* always defined to indicate that i18n is enabled */
+#define ENABLE_NLS 1
+
+/* Use structured logging */
+#define G_LOG_STRUCTURED 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 the `mlock` function. */
+#mesondefine HAVE_MLOCK
+
+/* 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
+
+/* 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

demos/constraint-editor/constraint-editor-application.c

@@ -0,0 +1,115 @@
+/*
+ * Copyright © 2019 Red Hat, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Authors: Matthias Clasen
+ */
+
+#include "config.h"
+
+#include "constraint-editor-application.h"
+#include "constraint-editor-window.h"
+
+struct _ConstraintEditorApplication
+{
+  GtkApplication parent_instance;
+};
+
+G_DEFINE_TYPE(ConstraintEditorApplication, constraint_editor_application, GTK_TYPE_APPLICATION);
+
+static void
+constraint_editor_application_init (ConstraintEditorApplication *app)
+{
+}
+
+static void
+quit_activated (GSimpleAction *action,
+                GVariant      *parameter,
+                gpointer       data)
+{
+  g_application_quit (G_APPLICATION (data));
+}
+
+static GActionEntry app_entries[] =
+{
+  { "quit", quit_activated, NULL, NULL, NULL }
+};
+
+static void
+constraint_editor_application_startup (GApplication *app)
+{
+  const char *quit_accels[2] = { "<Ctrl>Q", NULL };
+  const char *open_accels[2] = { "<Ctrl>O", NULL };
+  GtkCssProvider *provider;
+
+  G_APPLICATION_CLASS (constraint_editor_application_parent_class)->startup (app);
+
+  g_action_map_add_action_entries (G_ACTION_MAP (app),
+                                   app_entries, G_N_ELEMENTS (app_entries),
+                                   app);
+  gtk_application_set_accels_for_action (GTK_APPLICATION (app), "app.quit", quit_accels);
+  gtk_application_set_accels_for_action (GTK_APPLICATION (app), "win.open", open_accels);
+
+  provider = gtk_css_provider_new ();
+  gtk_css_provider_load_from_resource (provider, "/org/gtk/gtk4/constraint-editor/constraint-editor.css");
+  gtk_style_context_add_provider_for_display (gdk_display_get_default (),
+                                              GTK_STYLE_PROVIDER (provider),
+                                              GTK_STYLE_PROVIDER_PRIORITY_APPLICATION);
+}
+
+static void
+constraint_editor_application_activate (GApplication *app)
+{
+  ConstraintEditorWindow *win;
+
+  win = constraint_editor_window_new (CONSTRAINT_EDITOR_APPLICATION (app));
+  gtk_window_present (GTK_WINDOW (win));
+}
+
+static void
+constraint_editor_application_open (GApplication  *app,
+                                    GFile        **files,
+                                    int            n_files,
+                                    const char    *hint)
+{
+  ConstraintEditorWindow *win;
+  int i;
+
+  for (i = 0; i < n_files; i++)
+    {
+      win = constraint_editor_window_new (CONSTRAINT_EDITOR_APPLICATION (app));
+      constraint_editor_window_load (win, files[i]);
+      gtk_window_present (GTK_WINDOW (win));
+    }
+}
+
+static void
+constraint_editor_application_class_init (ConstraintEditorApplicationClass *class)
+{
+  GApplicationClass *application_class = G_APPLICATION_CLASS (class);
+
+  application_class->startup = constraint_editor_application_startup;
+  application_class->activate = constraint_editor_application_activate;
+  application_class->open = constraint_editor_application_open;
+}
+
+ConstraintEditorApplication *
+constraint_editor_application_new (void)
+{
+  return g_object_new (CONSTRAINT_EDITOR_APPLICATION_TYPE,
+                       "application-id", "org.gtk.gtk4.ConstraintEditor",
+                       "flags", G_APPLICATION_HANDLES_OPEN,
+                       NULL);
+}

demos/constraint-editor/constraint-editor-application.h

@@ -0,0 +1,28 @@
+/*
+ * Copyright © 2019 Red Hat, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Authors: Matthias Clasen
+ */
+
+#pragma once
+
+#include <gtk/gtk.h>
+
+#define CONSTRAINT_EDITOR_APPLICATION_TYPE (constraint_editor_application_get_type ())
+
+G_DECLARE_FINAL_TYPE (ConstraintEditorApplication, constraint_editor_application, CONSTRAINT, EDITOR_APPLICATION, GtkApplication)
+
+ConstraintEditorApplication *constraint_editor_application_new (void);

demos/constraint-editor/constraint-editor-window.c

@@ -0,0 +1,664 @@
+/*
+ * Copyright © 2019 Red Hat, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Authors: Matthias Clasen
+ */
+
+#include "config.h"
+
+#include "constraint-editor-window.h"
+#include "constraint-view.h"
+#include "constraint-editor.h"
+#include "guide-editor.h"
+
+struct _ConstraintEditorWindow
+{
+  GtkApplicationWindow parent_instance;
+
+  GtkWidget *paned;
+  GtkWidget *view;
+  GtkWidget *list;
+};
+
+G_DEFINE_TYPE(ConstraintEditorWindow, constraint_editor_window, GTK_TYPE_APPLICATION_WINDOW);
+
+static GtkConstraintTarget *
+find_target (GListModel          *model,
+             GtkConstraintTarget *orig)
+{
+  const char *name;
+  const char *model_name;
+  gpointer item;
+  int i;
+
+  if (orig == NULL)
+    return NULL;
+
+  if (GTK_IS_LABEL (orig))
+    name = gtk_label_get_label (GTK_LABEL (orig));
+  else if (GTK_IS_CONSTRAINT_GUIDE (orig))
+    name = gtk_constraint_guide_get_name (GTK_CONSTRAINT_GUIDE (orig));
+  else
+    {
+      g_warning ("Don't know how to handle %s targets", G_OBJECT_TYPE_NAME (orig));
+      return NULL;
+    }
+  for (i = 0; i < g_list_model_get_n_items (model); i++)
+    {
+      item = g_list_model_get_item (model, i);
+      g_object_unref (item);
+      if (GTK_IS_WIDGET (item))
+        model_name = gtk_widget_get_name (GTK_WIDGET (item));
+      else
+        model_name = gtk_constraint_guide_get_name (GTK_CONSTRAINT_GUIDE (item));
+
+      if (strcmp (name, model_name) == 0)
+        return GTK_CONSTRAINT_TARGET (item);
+    }
+  g_warning ("Failed to find target '%s'", name);
+
+  return NULL;
+}
+
+gboolean
+constraint_editor_window_load (ConstraintEditorWindow *self,
+                               GFile            *file)
+{
+  char *path;
+  GtkBuilder *builder;
+  GError *error = NULL;
+  GtkWidget *view;
+  GtkLayoutManager *layout;
+  GtkWidget *child;
+  const char *name;
+  gpointer item;
+  int i;
+  GListModel *list;
+
+  path = g_file_get_path (file);
+
+  builder = gtk_builder_new ();
+  if (!gtk_builder_add_from_file (builder, path, &error))
+    {
+      g_print ("Could not load %s: %s", path, error->message);
+      g_error_free (error);
+      g_free (path);
+      g_object_unref (builder);
+      return FALSE;
+    }
+
+  view = GTK_WIDGET (gtk_builder_get_object (builder, "view"));
+  if (!GTK_IS_BOX (view))
+    {
+      g_print ("Could not load %s: No GtkBox named 'view'", path);
+      g_free (path);
+      g_object_unref (builder);
+      return FALSE;
+    }
+  layout = gtk_widget_get_layout_manager (view);
+  if (!GTK_IS_CONSTRAINT_LAYOUT (layout))
+    {
+      g_print ("Could not load %s: Widget 'view' does not use GtkConstraintLayout", path);
+      g_free (path);
+      g_object_unref (builder);
+      return FALSE;
+    }
+
+  for (child = gtk_widget_get_first_child (view);
+       child;
+       child = gtk_widget_get_next_sibling (child))
+    {
+      if (!GTK_IS_LABEL (child))
+        {
+          g_print ("Skipping non-GtkLabel child\n");
+          continue;
+        }
+
+      name = gtk_label_get_label (GTK_LABEL (child));
+      constraint_view_add_child (CONSTRAINT_VIEW (self->view), name);
+    }
+
+  list = gtk_constraint_layout_observe_guides (GTK_CONSTRAINT_LAYOUT (layout));
+  for (i = 0; i < g_list_model_get_n_items (list); i++)
+    {
+      GtkConstraintGuide *guide, *clone;
+      int w, h;
+
+      item = g_list_model_get_item (list, i);
+      guide = GTK_CONSTRAINT_GUIDE (item);
+
+      /* need to clone here, to attach to the right targets */
+      clone = gtk_constraint_guide_new ();
+      gtk_constraint_guide_set_name (clone, gtk_constraint_guide_get_name (guide));
+      gtk_constraint_guide_set_strength (clone, gtk_constraint_guide_get_strength (guide));
+      gtk_constraint_guide_get_min_size (guide, &w, &h);
+      gtk_constraint_guide_set_min_size (clone, w, h);
+      gtk_constraint_guide_get_nat_size (guide, &w, &h);
+      gtk_constraint_guide_set_nat_size (clone, w, h);
+      gtk_constraint_guide_get_max_size (guide, &w, &h);
+      gtk_constraint_guide_set_max_size (clone, w, h);
+      constraint_view_add_guide (CONSTRAINT_VIEW (self->view), clone);
+      g_object_unref (guide);
+      g_object_unref (clone);
+    }
+  g_object_unref (list);
+
+  list = gtk_constraint_layout_observe_constraints (GTK_CONSTRAINT_LAYOUT (layout));
+  for (i = 0; i < g_list_model_get_n_items (list); i++)
+    {
+      GtkConstraint *constraint;
+      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),
+                                  gtk_constraint_get_target_attribute (constraint),
+                                  gtk_constraint_get_relation (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);
+
+      g_object_unref (constraint);
+      g_object_unref (clone);
+    }
+  g_object_unref (list);
+
+  g_free (path);
+  g_object_unref (builder);
+
+  return TRUE;
+}
+
+static void
+open_response_cb (GtkNativeDialog        *dialog,
+                  int                     response,
+                  ConstraintEditorWindow *self)
+{
+  gtk_native_dialog_hide (dialog);
+
+  if (response == GTK_RESPONSE_ACCEPT)
+    {
+      GFile *file;
+
+      file = gtk_file_chooser_get_file (GTK_FILE_CHOOSER (dialog));
+      constraint_editor_window_load (self, file);
+      g_object_unref (file);
+    }
+
+  gtk_native_dialog_destroy (dialog);
+}
+
+static void
+open_cb (GtkWidget              *button,
+         ConstraintEditorWindow *self)
+{
+  GtkFileChooserNative *dialog;
+
+  dialog = gtk_file_chooser_native_new ("Open file",
+                                        GTK_WINDOW (self),
+                                        GTK_FILE_CHOOSER_ACTION_OPEN,
+                                        "_Load",
+                                        "_Cancel");
+  gtk_native_dialog_set_modal (GTK_NATIVE_DIALOG (dialog), TRUE);
+
+  GFile *cwd = g_file_new_for_path (".");
+  gtk_file_chooser_set_current_folder (GTK_FILE_CHOOSER (dialog), cwd, NULL);
+  g_object_unref (cwd);
+
+  g_signal_connect (dialog, "response", G_CALLBACK (open_response_cb), self);
+  gtk_native_dialog_show (GTK_NATIVE_DIALOG (dialog));
+}
+
+static void
+serialize_child (GString   *str,
+                 int        indent,
+                 GtkWidget *child)
+{
+  const char *name;
+
+  name = gtk_widget_get_name (child);
+  g_string_append_printf (str, "%*s<child>\n", indent, "");
+  g_string_append_printf (str, "%*s  <object class=\"GtkLabel\" id=\"%s\">\n", indent, "", name);
+  g_string_append_printf (str, "%*s    <property name=\"label\">%s</property>\n", indent, "", name);
+  g_string_append_printf (str, "%*s  </object>\n", indent, "");
+  g_string_append_printf (str, "%*s</child>\n", indent, "");
+}
+
+static char *
+serialize_model (GListModel *list)
+{
+  GString *str = g_string_new ("");
+  int i;
+
+  g_string_append (str, "<interface>\n");
+  g_string_append (str, "  <object class=\"GtkBox\" id=\"view\">\n");
+  g_string_append (str, "    <property name=\"layout-manager\">\n");
+  g_string_append (str, "      <object class=\"GtkConstraintLayout\">\n");
+  g_string_append (str, "        <constraints>\n");
+  for (i = 0; i < g_list_model_get_n_items (list); i++)
+    {
+      gpointer item = g_list_model_get_item (list, i);
+      g_object_unref (item);
+      if (GTK_IS_CONSTRAINT (item))
+        constraint_editor_serialize_constraint (str, 10, GTK_CONSTRAINT (item));
+      else if (GTK_IS_CONSTRAINT_GUIDE (item))
+        guide_editor_serialize_guide (str, 10, GTK_CONSTRAINT_GUIDE (item));
+    }
+  g_string_append (str, "        </constraints>\n");
+  g_string_append (str, "      </object>\n");
+  g_string_append (str, "    </property>\n");
+  for (i = 0; i < g_list_model_get_n_items (list); i++)
+    {
+      gpointer item = g_list_model_get_item (list, i);
+      g_object_unref (item);
+      if (GTK_IS_WIDGET (item))
+        serialize_child (str, 4, GTK_WIDGET (item));
+    }
+  g_string_append (str, "  </object>\n");
+  g_string_append (str, "</interface>\n");
+
+  return g_string_free (str, FALSE);
+}
+
+
+static void
+save_response_cb (GtkNativeDialog        *dialog,
+                  int                     response,
+                  ConstraintEditorWindow *self)
+{
+  gtk_native_dialog_hide (dialog);
+
+  if (response == GTK_RESPONSE_ACCEPT)
+    {
+      GListModel *model;
+      GFile *file;
+      char *text;
+      GError *error = NULL;
+
+      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),
+                               NULL, FALSE,
+                               G_FILE_CREATE_NONE,
+                               NULL,
+                               NULL,
+                               &error);
+      if (error != NULL)
+        {
+          GtkWidget *message_dialog;
+
+          message_dialog = gtk_message_dialog_new (GTK_WINDOW (gtk_widget_get_root (GTK_WIDGET (self))),
+                                                   GTK_DIALOG_MODAL|GTK_DIALOG_DESTROY_WITH_PARENT,
+                                                   GTK_MESSAGE_INFO,
+                                                   GTK_BUTTONS_OK,
+                                                   "Saving failed");
+          gtk_message_dialog_format_secondary_text (GTK_MESSAGE_DIALOG (message_dialog),
+                                                    "%s", error->message);
+          g_signal_connect (message_dialog, "response", G_CALLBACK (gtk_window_destroy), NULL);
+          gtk_widget_show (message_dialog);
+          g_error_free (error);
+        }
+
+      g_free (text);
+      g_object_unref (file);
+    }
+
+  gtk_native_dialog_destroy (dialog);
+}
+
+static void
+save_cb (GtkWidget              *button,
+         ConstraintEditorWindow *self)
+{
+  GtkFileChooserNative *dialog;
+
+  dialog = gtk_file_chooser_native_new ("Save constraints",
+                                        GTK_WINDOW (gtk_widget_get_root (GTK_WIDGET (button))),
+                                        GTK_FILE_CHOOSER_ACTION_SAVE,
+                                        "_Save",
+                                        "_Cancel");
+  gtk_native_dialog_set_modal (GTK_NATIVE_DIALOG (dialog), TRUE);
+
+  GFile *cwd = g_file_new_for_path (".");
+  gtk_file_chooser_set_current_folder (GTK_FILE_CHOOSER (dialog), cwd, NULL);
+  g_object_unref (cwd);
+
+  g_signal_connect (dialog, "response", G_CALLBACK (save_response_cb), self);
+  gtk_native_dialog_show (GTK_NATIVE_DIALOG (dialog));
+}
+
+static void
+constraint_editor_window_finalize (GObject *object)
+{
+  //ConstraintEditorWindow *self = (ConstraintEditorWindow *)object;
+
+  G_OBJECT_CLASS (constraint_editor_window_parent_class)->finalize (object);
+}
+
+static int child_counter;
+static int guide_counter;
+
+static void
+add_child (ConstraintEditorWindow *win)
+{
+  char *name;
+
+  child_counter++;
+  name = g_strdup_printf ("Child %d", child_counter);
+  constraint_view_add_child (CONSTRAINT_VIEW (win->view), name);
+  g_free (name);
+}
+
+static void
+add_guide (ConstraintEditorWindow *win)
+{
+  char *name;
+  GtkConstraintGuide *guide;
+
+  guide_counter++;
+  name = g_strdup_printf ("Guide %d", guide_counter);
+  guide = gtk_constraint_guide_new ();
+  gtk_constraint_guide_set_name (guide, name);
+  g_free (name);
+
+  constraint_view_add_guide (CONSTRAINT_VIEW (win->view), guide);
+}
+
+static void
+constraint_editor_done (ConstraintEditor *editor,
+                        GtkConstraint    *constraint,
+                        ConstraintEditorWindow *win)
+{
+  GtkConstraint *old_constraint;
+
+  g_object_get (editor, "constraint", &old_constraint, NULL);
+
+  if (old_constraint)
+    constraint_view_remove_constraint (CONSTRAINT_VIEW (win->view), old_constraint);
+
+  constraint_view_add_constraint (CONSTRAINT_VIEW (win->view), constraint);
+
+  g_clear_object (&old_constraint);
+
+  gtk_window_destroy (GTK_WINDOW (gtk_widget_get_ancestor (GTK_WIDGET (editor), GTK_TYPE_WINDOW)));
+}
+
+static void
+edit_constraint (ConstraintEditorWindow *win,
+                 GtkConstraint          *constraint)
+{
+  GtkWidget *window;
+  ConstraintEditor *editor;
+  GListModel *model;
+
+  window = gtk_window_new ();
+  gtk_window_set_transient_for (GTK_WINDOW (window), GTK_WINDOW (win));
+  gtk_window_set_resizable (GTK_WINDOW (window), FALSE);
+  if (constraint)
+    gtk_window_set_title (GTK_WINDOW (window), "Edit Constraint");
+  else
+    gtk_window_set_title (GTK_WINDOW (window), "Create Constraint");
+
+  model = constraint_view_get_model (CONSTRAINT_VIEW (win->view));
+
+  editor = constraint_editor_new (model, constraint);
+
+  gtk_window_set_child (GTK_WINDOW (window), GTK_WIDGET (editor));
+
+  g_signal_connect (editor, "done", G_CALLBACK (constraint_editor_done), win);
+
+  gtk_widget_show (window);
+}
+
+static void
+add_constraint (ConstraintEditorWindow *win)
+{
+  edit_constraint (win, NULL);
+}
+
+static void
+guide_editor_done (GuideEditor            *editor,
+                   GtkConstraintGuide     *guide,
+                   ConstraintEditorWindow *win)
+{
+  gtk_window_destroy (GTK_WINDOW (gtk_widget_get_ancestor (GTK_WIDGET (editor), GTK_TYPE_WINDOW)));
+}
+
+static void
+edit_guide (ConstraintEditorWindow *win,
+            GtkConstraintGuide     *guide)
+{
+  GtkWidget *window;
+  GuideEditor *editor;
+
+  window = gtk_window_new ();
+  gtk_window_set_resizable (GTK_WINDOW (window), FALSE);
+  gtk_window_set_transient_for (GTK_WINDOW (window), GTK_WINDOW (win));
+  gtk_window_set_title (GTK_WINDOW (window), "Edit Guide");
+
+  editor = guide_editor_new (guide);
+  gtk_window_set_child (GTK_WINDOW (window), GTK_WIDGET (editor));
+
+  g_signal_connect (editor, "done", G_CALLBACK (guide_editor_done), win);
+  gtk_widget_show (window);
+}
+
+static void
+row_activated (GtkListBox *list,
+               GtkListBoxRow *row,
+               ConstraintEditorWindow *win)
+{
+  GObject *item;
+
+  item = G_OBJECT (g_object_get_data (G_OBJECT (row), "item"));
+
+  if (GTK_IS_CONSTRAINT (item))
+    edit_constraint (win, GTK_CONSTRAINT (item));
+  else if (GTK_IS_CONSTRAINT_GUIDE (item))
+    edit_guide (win, GTK_CONSTRAINT_GUIDE (item));
+}
+
+static void
+constraint_editor_window_class_init (ConstraintEditorWindowClass *class)
+{
+  GObjectClass *object_class = G_OBJECT_CLASS (class);
+  GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
+
+  object_class->finalize = constraint_editor_window_finalize;
+
+  gtk_widget_class_set_template_from_resource (widget_class,
+                                               "/org/gtk/gtk4/constraint-editor/constraint-editor-window.ui");
+
+  gtk_widget_class_bind_template_child (widget_class, ConstraintEditorWindow, paned);
+  gtk_widget_class_bind_template_child (widget_class, ConstraintEditorWindow, view);
+  gtk_widget_class_bind_template_child (widget_class, ConstraintEditorWindow, list);
+
+  gtk_widget_class_bind_template_callback (widget_class, open_cb);
+  gtk_widget_class_bind_template_callback (widget_class, save_cb);
+  gtk_widget_class_bind_template_callback (widget_class, add_child);
+  gtk_widget_class_bind_template_callback (widget_class, add_guide);
+  gtk_widget_class_bind_template_callback (widget_class, add_constraint);
+  gtk_widget_class_bind_template_callback (widget_class, row_activated);
+}
+
+static void
+row_edit (GtkButton *button,
+          ConstraintEditorWindow *win)
+{
+  GtkWidget *row;
+  GObject *item;
+
+  row = gtk_widget_get_ancestor (GTK_WIDGET (button), GTK_TYPE_LIST_BOX_ROW);
+  item = (GObject *)g_object_get_data (G_OBJECT (row), "item");
+  if (GTK_IS_CONSTRAINT (item))
+    edit_constraint (win, GTK_CONSTRAINT (item));
+  else if (GTK_IS_CONSTRAINT_GUIDE (item))
+    edit_guide (win, GTK_CONSTRAINT_GUIDE (item));
+}
+
+static void
+mark_constraints_invalid (ConstraintEditorWindow *win,
+                          gpointer                removed)
+{
+  GtkWidget *child;
+  GObject *item;
+
+  for (child = gtk_widget_get_first_child (win->list);
+       child;
+       child = gtk_widget_get_next_sibling (child))
+    {
+      item = (GObject *)g_object_get_data (G_OBJECT (child), "item");
+      if (GTK_IS_CONSTRAINT (item))
+        {
+          GtkConstraint *constraint = GTK_CONSTRAINT (item);
+
+          if (gtk_constraint_get_target (constraint) == (GtkConstraintTarget *)removed ||
+              gtk_constraint_get_source (constraint) == (GtkConstraintTarget *)removed)
+            {
+              GtkWidget *button;
+              button = (GtkWidget *)g_object_get_data (G_OBJECT (child), "edit");
+              gtk_button_set_icon_name (GTK_BUTTON (button), "dialog-warning-symbolic");
+              gtk_widget_set_tooltip_text (button, "Constraint is invalid");
+            }
+        }
+    }
+}
+
+static void
+row_delete (GtkButton *button,
+            ConstraintEditorWindow *win)
+{
+  GtkWidget *row;
+  GObject *item;
+
+  row = gtk_widget_get_ancestor (GTK_WIDGET (button), GTK_TYPE_LIST_BOX_ROW);
+  item = (GObject *)g_object_get_data (G_OBJECT (row), "item");
+  if (GTK_IS_CONSTRAINT (item))
+    constraint_view_remove_constraint (CONSTRAINT_VIEW (win->view),
+                                       GTK_CONSTRAINT (item));
+  else if (GTK_IS_CONSTRAINT_GUIDE (item))
+    {
+      mark_constraints_invalid (win, item);
+      constraint_view_remove_guide (CONSTRAINT_VIEW (win->view),
+                                    GTK_CONSTRAINT_GUIDE (item));
+    }
+  else if (GTK_IS_WIDGET (item))
+    {
+      mark_constraints_invalid (win, item);
+      constraint_view_remove_child (CONSTRAINT_VIEW (win->view),
+                                    GTK_WIDGET (item));
+    }
+}
+
+static GtkWidget *
+create_widget_func (gpointer item,
+                    gpointer user_data)
+{
+  ConstraintEditorWindow *win = user_data;
+  const char *name;
+  char *freeme = NULL;
+  GtkWidget *row, *box, *label, *button;
+
+  if (GTK_IS_WIDGET (item))
+    name = gtk_widget_get_name (GTK_WIDGET (item));
+  else if (GTK_IS_CONSTRAINT_GUIDE (item))
+    name = gtk_constraint_guide_get_name (GTK_CONSTRAINT_GUIDE (item));
+  else if (GTK_IS_CONSTRAINT (item))
+    name = freeme = constraint_editor_constraint_to_string (GTK_CONSTRAINT (item));
+  else
+    name = "";
+
+  row = gtk_list_box_row_new ();
+  g_object_set_data_full (G_OBJECT (row), "item", g_object_ref (item), g_object_unref);
+  box = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 0);
+  label = gtk_label_new (name);
+  if (GTK_IS_WIDGET (item) || GTK_IS_CONSTRAINT_GUIDE (item))
+    g_object_bind_property (item, "name",
+                            label, "label",
+                            G_BINDING_DEFAULT);
+  gtk_widget_set_margin_start (label, 10);
+  gtk_widget_set_margin_end (label, 10);
+  gtk_widget_set_margin_top (label, 10);
+  gtk_widget_set_margin_bottom (label, 10);
+  gtk_label_set_xalign (GTK_LABEL (label), 0.0);
+  gtk_widget_set_hexpand (label, TRUE);
+  gtk_list_box_row_set_child (GTK_LIST_BOX_ROW (row), box);
+  gtk_box_append (GTK_BOX (box), label);
+
+  if (GTK_IS_CONSTRAINT (item) || GTK_IS_CONSTRAINT_GUIDE (item))
+    {
+      button = gtk_button_new_from_icon_name ("document-edit-symbolic");
+      gtk_button_set_has_frame (GTK_BUTTON (button), FALSE);
+      g_signal_connect (button, "clicked", G_CALLBACK (row_edit), win);
+      g_object_set_data (G_OBJECT (row), "edit", button);
+      gtk_box_append (GTK_BOX (box), button);
+      button = gtk_button_new_from_icon_name ("edit-delete-symbolic");
+      gtk_button_set_has_frame (GTK_BUTTON (button), FALSE);
+      g_signal_connect (button, "clicked", G_CALLBACK (row_delete), win);
+      gtk_box_append (GTK_BOX (box), button);
+    }
+  else if (GTK_IS_WIDGET (item))
+    {
+      button = gtk_button_new_from_icon_name ("edit-delete-symbolic");
+      gtk_button_set_has_frame (GTK_BUTTON (button), FALSE);
+      g_signal_connect (button, "clicked", G_CALLBACK (row_delete), win);
+      gtk_box_append (GTK_BOX (box), button);
+    }
+
+  g_free (freeme);
+
+  return row;
+}
+
+static void
+constraint_editor_window_init (ConstraintEditorWindow *self)
+{
+  gtk_widget_init_template (GTK_WIDGET (self));
+
+  gtk_list_box_bind_model (GTK_LIST_BOX (self->list),
+                           constraint_view_get_model (CONSTRAINT_VIEW (self->view)),
+                           create_widget_func,
+                           self,
+                           NULL);
+}
+
+ConstraintEditorWindow *
+constraint_editor_window_new (ConstraintEditorApplication *application)
+{
+  return g_object_new (CONSTRAINT_EDITOR_WINDOW_TYPE,
+                       "application", application,
+                       NULL);
+}

demos/constraint-editor/constraint-editor-window.h

@@ -0,0 +1,34 @@
+/*
+ * Copyright © 2019 Red Hat, Inc
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Authors: Matthias Clasen
+ */
+
+#pragma once
+
+#include <gtk/gtk.h>
+
+#include "constraint-editor-application.h"
+
+
+#define CONSTRAINT_EDITOR_WINDOW_TYPE (constraint_editor_window_get_type ())
+
+G_DECLARE_FINAL_TYPE (ConstraintEditorWindow, constraint_editor_window, CONSTRAINT, EDITOR_WINDOW, GtkApplicationWindow)
+
+ConstraintEditorWindow * constraint_editor_window_new  (ConstraintEditorApplication  *application);
+
+gboolean                 constraint_editor_window_load (ConstraintEditorWindow       *self,
+                                                        GFile                        *file);

demos/constraint-editor/constraint-editor-window.ui

@@ -0,0 +1,77 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<interface>
+  <template class="ConstraintEditorWindow" parent="GtkApplicationWindow">
+    <property name="title" translatable="yes">GTK Constraint Editor</property>
+    <property name="default-width">1024</property>
+    <property name="default-height">768</property>
+    <child type="titlebar">
+      <object class="GtkHeaderBar" id="header">
+        <child type="start">
+          <object class="GtkButton">
+            <property name="icon-name">document-open-symbolic</property>
+            <property name="tooltip-text">Open ui file</property>
+            <signal name="clicked" handler="open_cb"/>
+          </object>
+        </child>
+        <child type="start">
+          <object class="GtkButton">
+            <property name="icon-name">document-save-symbolic</property>
+            <property name="tooltip-text">Save to ui file</property>
+            <signal name="clicked" handler="save_cb"/>
+          </object>
+        </child>
+      </object>
+    </child>
+    <child>
+      <object class="GtkPaned" id="paned">
+        <property name="orientation">horizontal</property>
+        <child>
+          <object class="GtkBox">
+            <property name="orientation">vertical</property>
+            <child>
+              <object class="GtkBox">
+                <property name="orientation">horizontal</property>
+                <child>
+                  <object class="GtkButton">
+                    <property name="label">Add Child</property>
+                    <signal name="clicked" handler="add_child" swapped="yes"/>
+                  </object>
+                </child>
+                <child>
+                  <object class="GtkButton">
+                    <property name="label">Add Guide</property>
+                    <signal name="clicked" handler="add_guide" swapped="yes"/>
+                  </object>
+                </child>
+                <child>
+                  <object class="GtkButton">
+                    <property name="label">Add Constraint</property>
+                    <signal name="clicked" handler="add_constraint" swapped="yes"/>
+                  </object>
+                </child>
+              </object>
+            </child>
+            <child>
+              <object class="GtkScrolledWindow">
+                <property name="hscrollbar-policy">never</property>
+                <property name="vscrollbar-policy">automatic</property>
+                <property name="vexpand">1</property>
+                <child>
+                  <object class="GtkListBox" id="list">
+                    <property name="show-separators">1</property>
+                    <property name="selection-mode">none</property>
+                    <signal name="row-activated" handler="row_activated"/>
+                  </object>
+                </child>
+              </object>
+            </child>
+          </object>
+        </child>
+        <child>
+          <object class="ConstraintView" id="view">
+          </object>
+        </child>
+      </object>
+    </child>
+  </template>
+</interface>

demos/constraint-editor/constraint-editor.c

@@ -0,0 +1,680 @@
+/*
+ * Copyright © 2019 Red Hat, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Authors: Matthias Clasen
+ */
+
+#include "config.h"
+
+#include "constraint-editor.h"
+
+struct _ConstraintEditor
+{
+  GtkWidget parent_instance;
+
+  GtkWidget *grid;
+  GtkWidget *target;
+  GtkWidget *target_attr;
+  GtkWidget *relation;
+  GtkWidget *source;
+  GtkWidget *source_attr;
+  GtkWidget *multiplier;
+  GtkWidget *constant;
+  GtkWidget *strength;
+  GtkWidget *preview;
+  GtkWidget *button;
+
+  GtkConstraint *constraint;
+  GListModel *model;
+
+  gboolean constructed;
+};
+
+enum {
+  PROP_MODEL = 1,
+  PROP_CONSTRAINT,
+  LAST_PROP
+};
+
+static GParamSpec *pspecs[LAST_PROP];
+
+enum {
+  DONE,
+  LAST_SIGNAL
+};
+
+static guint signals[LAST_SIGNAL];
+
+G_DEFINE_TYPE(ConstraintEditor, constraint_editor, GTK_TYPE_WIDGET);
+
+static const char *
+get_target_name (GtkConstraintTarget *target)
+{
+  if (target == NULL)
+    return "super";
+  else if (GTK_IS_WIDGET (target))
+    return gtk_widget_get_name (GTK_WIDGET (target));
+  else if (GTK_IS_CONSTRAINT_GUIDE (target))
+    return gtk_constraint_guide_get_name (GTK_CONSTRAINT_GUIDE (target));
+  else
+    return "";
+}
+
+static void
+constraint_target_combo (GListModel *model,
+                         GtkWidget  *combo,
+                         gboolean    is_source)
+{
+  int i;
+
+  gtk_combo_box_text_append (GTK_COMBO_BOX_TEXT (combo), "super", "Super");
+
+  if (model)
+    {
+      for (i = 0; i < g_list_model_get_n_items (model); i++)
+        {
+          GObject *item = g_list_model_get_object (model, i);
+          const char *name;
+
+          if (GTK_IS_CONSTRAINT (item))
+            continue;
+
+          name = get_target_name (GTK_CONSTRAINT_TARGET (item));
+
+          gtk_combo_box_text_append (GTK_COMBO_BOX_TEXT (combo), name, name);
+          g_object_unref (item);
+        }
+    }
+}
+
+static void
+constraint_attribute_combo (GtkWidget *combo,
+                            gboolean is_source)
+{
+  if (is_source)
+    gtk_combo_box_text_append (GTK_COMBO_BOX_TEXT (combo), "none", "None");
+  gtk_combo_box_text_append (GTK_COMBO_BOX_TEXT (combo), "left", "Left");
+  gtk_combo_box_text_append (GTK_COMBO_BOX_TEXT (combo), "right", "Right");
+  gtk_combo_box_text_append (GTK_COMBO_BOX_TEXT (combo), "top", "Top");
+  gtk_combo_box_text_append (GTK_COMBO_BOX_TEXT (combo), "bottom", "Bottom");
+  gtk_combo_box_text_append (GTK_COMBO_BOX_TEXT (combo), "start", "Start");
+  gtk_combo_box_text_append (GTK_COMBO_BOX_TEXT (combo), "end", "End");
+  gtk_combo_box_text_append (GTK_COMBO_BOX_TEXT (combo), "width", "Width");
+  gtk_combo_box_text_append (GTK_COMBO_BOX_TEXT (combo), "height", "Height");
+  gtk_combo_box_text_append (GTK_COMBO_BOX_TEXT (combo), "center-x", "Center X");
+  gtk_combo_box_text_append (GTK_COMBO_BOX_TEXT (combo), "center-y", "Center Y");
+  gtk_combo_box_text_append (GTK_COMBO_BOX_TEXT (combo), "baseline", "Baseline");
+}
+
+static void
+constraint_relation_combo (GtkWidget *combo)
+{
+  gtk_combo_box_text_append (GTK_COMBO_BOX_TEXT (combo), "le", "≤");
+  gtk_combo_box_text_append (GTK_COMBO_BOX_TEXT (combo), "eq", "=");
+  gtk_combo_box_text_append (GTK_COMBO_BOX_TEXT (combo), "ge", "≥");
+}
+
+static void
+constraint_strength_combo (GtkWidget *combo)
+{
+  gtk_combo_box_text_append (GTK_COMBO_BOX_TEXT (combo), "weak", "Weak");
+  gtk_combo_box_text_append (GTK_COMBO_BOX_TEXT (combo), "medium", "Medium");
+  gtk_combo_box_text_append (GTK_COMBO_BOX_TEXT (combo), "strong", "Strong");
+  gtk_combo_box_text_append (GTK_COMBO_BOX_TEXT (combo), "required", "Required");
+}
+
+static gpointer
+get_target (GListModel *model,
+            const char *id)
+{
+  int i;
+
+  if (id == NULL)
+    return NULL;
+
+  if (strcmp ("super", id) == 0)
+    return NULL;
+
+  for (i = 0; i < g_list_model_get_n_items (model); i++)
+    {
+      GObject *item = g_list_model_get_object (model, i);
+      g_object_unref (item);
+      if (GTK_IS_CONSTRAINT (item))
+        continue;
+      else if (GTK_IS_WIDGET (item))
+        {
+          if (strcmp (id, gtk_widget_get_name (GTK_WIDGET (item))) == 0)
+            return item;
+        }
+      else if (GTK_IS_CONSTRAINT_GUIDE (item))
+        {
+          if (strcmp (id, gtk_constraint_guide_get_name (GTK_CONSTRAINT_GUIDE (item))) == 0)
+            return item;
+        }
+    }
+
+  return NULL;
+}
+
+static GtkConstraintAttribute
+get_target_attr (const char *id)
+{
+  GtkConstraintAttribute attr;
+  GEnumClass *class = g_type_class_ref (GTK_TYPE_CONSTRAINT_ATTRIBUTE);
+  GEnumValue *value = g_enum_get_value_by_nick (class, id);
+  attr = value->value;
+  g_type_class_unref (class);
+
+  return attr;
+}
+
+static const char *
+get_attr_nick (GtkConstraintAttribute attr)
+{
+  GEnumClass *class = g_type_class_ref (GTK_TYPE_CONSTRAINT_ATTRIBUTE);
+  GEnumValue *value = g_enum_get_value (class, attr);
+  const char *nick = value->value_nick;
+  g_type_class_unref (class);
+
+  return nick;
+}
+
+static GtkConstraintRelation
+get_relation (const char *id)
+{
+  GtkConstraintRelation relation;
+  GEnumClass *class = g_type_class_ref (GTK_TYPE_CONSTRAINT_RELATION);
+  GEnumValue *value = g_enum_get_value_by_nick (class, id);
+  relation = value->value;
+  g_type_class_unref (class);
+
+  return relation;
+}
+
+static const char *
+get_relation_nick (GtkConstraintRelation relation)
+{
+  GEnumClass *class = g_type_class_ref (GTK_TYPE_CONSTRAINT_RELATION);
+  GEnumValue *value = g_enum_get_value (class, relation);
+  const char *nick = value->value_nick;
+  g_type_class_unref (class);
+
+  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)
+{
+  GtkConstraintStrength strength;
+  GEnumClass *class = g_type_class_ref (GTK_TYPE_CONSTRAINT_STRENGTH);
+  GEnumValue *value = g_enum_get_value_by_nick (class, id);
+  strength = value->value;
+  g_type_class_unref (class);
+
+  return strength;
+}
+
+static const char *
+get_strength_nick (GtkConstraintStrength strength)
+{
+  GEnumClass *class = g_type_class_ref (GTK_TYPE_CONSTRAINT_STRENGTH);
+  GEnumValue *value = g_enum_get_value (class, strength);
+  const char *nick = value->value_nick;
+  g_type_class_unref (class);
+
+  return nick;
+}
+
+void
+constraint_editor_serialize_constraint (GString       *str,
+                                        int            indent,
+                                        GtkConstraint *constraint)
+{
+  const char *target;
+  const char *target_attr;
+  const char *relation;
+  const char *source;
+  const char *source_attr;
+  double multiplier;
+  double constant;
+  const char *strength;
+
+  target = get_target_name (gtk_constraint_get_target (constraint));
+  target_attr = get_attr_nick (gtk_constraint_get_target_attribute (constraint));
+  relation = get_relation_nick (gtk_constraint_get_relation (constraint));
+  source = get_target_name (gtk_constraint_get_source (constraint));
+  source_attr = get_attr_nick (gtk_constraint_get_source_attribute (constraint));
+  multiplier = gtk_constraint_get_multiplier (constraint);
+  constant = gtk_constraint_get_constant (constraint);
+  strength = get_strength_nick (gtk_constraint_get_strength (constraint));
+
+  g_string_append_printf (str, "%*s<constraint target=\"%s\" target-attribute=\"%s\"\n", indent, "", target, target_attr);
+  g_string_append_printf (str, "%*s            relation=\"%s\"\n", indent, "", relation);
+  if (strcmp (source_attr, "none") != 0)
+    {
+      g_string_append_printf (str, "%*s            source=\"%s\" source-attribute=\"%s\"\n", indent, "", source, source_attr);
+      g_string_append_printf (str, "%*s            multiplier=\"%g\"\n", indent, "", multiplier);
+    }
+  g_string_append_printf (str, "%*s            constant=\"%g\"\n", indent, "", constant);
+  g_string_append_printf (str, "%*s            strength=\"%s\" />\n", indent, "", strength);
+}
+
+static void
+create_constraint (GtkButton        *button,
+                   ConstraintEditor *editor)
+{
+  const char *id;
+  gpointer target;
+  GtkConstraintAttribute target_attr;
+  gpointer source;
+  GtkConstraintAttribute source_attr;
+  GtkConstraintRelation relation;
+  double multiplier;
+  double constant;
+  int strength;
+  GtkConstraint *constraint;
+
+  id = gtk_combo_box_get_active_id (GTK_COMBO_BOX (editor->target));
+  target = get_target (editor->model, id);
+  id = gtk_combo_box_get_active_id (GTK_COMBO_BOX (editor->target_attr));
+  target_attr = get_target_attr (id);
+
+  id = gtk_combo_box_get_active_id (GTK_COMBO_BOX (editor->source));
+  source = get_target (editor->model, id);
+  id = gtk_combo_box_get_active_id (GTK_COMBO_BOX (editor->source_attr));
+  source_attr = get_target_attr (id);
+
+  id = gtk_combo_box_get_active_id (GTK_COMBO_BOX (editor->relation));
+  relation = get_relation (id);
+
+  multiplier = g_ascii_strtod (gtk_editable_get_text (GTK_EDITABLE (editor->multiplier)), NULL);
+
+  constant = g_ascii_strtod (gtk_editable_get_text (GTK_EDITABLE (editor->constant)), NULL);
+
+  id = gtk_combo_box_get_active_id (GTK_COMBO_BOX (editor->strength));
+  strength = get_strength (id);
+
+  constraint = gtk_constraint_new (target, target_attr,
+                                   relation,
+                                   source, source_attr,
+                                   multiplier,
+                                   constant,
+                                   strength);
+  g_signal_emit (editor, signals[DONE], 0, constraint);
+  g_object_unref (constraint);
+}
+
+static void
+source_attr_changed (ConstraintEditor *editor)
+{
+  const char *id;
+
+  id = gtk_combo_box_get_active_id (GTK_COMBO_BOX (editor->source_attr));
+  if (strcmp (id, "none") == 0)
+    {
+      gtk_combo_box_set_active (GTK_COMBO_BOX (editor->source), -1);
+      gtk_editable_set_text (GTK_EDITABLE (editor->multiplier), "");
+      gtk_widget_set_sensitive (editor->source, FALSE);
+      gtk_widget_set_sensitive (editor->multiplier, FALSE);
+    }
+  else
+    {
+      gtk_widget_set_sensitive (editor->source, TRUE);
+      gtk_widget_set_sensitive (editor->multiplier, TRUE);
+      gtk_editable_set_text (GTK_EDITABLE (editor->multiplier), "1");
+    }
+}
+
+char *
+constraint_editor_constraint_to_string (GtkConstraint *constraint)
+{
+  GString *str;
+  const char *name;
+  const char *attr;
+  const char *relation;
+  double c, m;
+
+  str = g_string_new ("");
+
+  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));
+
+  if (name == NULL)
+    name = "[ ]";
+
+  g_string_append_printf (str, "%s.%s %s ", name, attr, relation);
+
+  c = gtk_constraint_get_constant (constraint);
+
+  attr = get_attr_nick (gtk_constraint_get_source_attribute (constraint));
+  if (strcmp (attr, "none") != 0)
+    {
+      name = get_target_name (gtk_constraint_get_source (constraint));
+      m = gtk_constraint_get_multiplier (constraint);
+
+      if (name == NULL)
+        name = "[ ]";
+
+      g_string_append_printf (str, "%s.%s", name, attr);
+
+      if (m != 1.0)
+        g_string_append_printf (str, " × %g", m);
+
+      if (c > 0.0)
+        g_string_append_printf (str, " + %g", c);
+      else if (c < 0.0)
+        g_string_append_printf (str, " - %g", -c);
+    }
+  else
+    g_string_append_printf (str, "%g", c);
+
+  return g_string_free (str, FALSE);
+}
+
+static void
+update_preview (ConstraintEditor *editor)
+{
+  GString *str;
+  const char *name;
+  const char *attr;
+  char *relation;
+  const char *multiplier;
+  const char *constant;
+  double c, m;
+
+  if (!editor->constructed)
+    return;
+
+  str = g_string_new ("");
+
+  name = gtk_combo_box_get_active_id (GTK_COMBO_BOX (editor->target));
+  attr = gtk_combo_box_get_active_id (GTK_COMBO_BOX (editor->target_attr));
+  relation = gtk_combo_box_text_get_active_text (GTK_COMBO_BOX_TEXT (editor->relation));
+
+  if (name == NULL)
+    name = "[ ]";
+
+  g_string_append_printf (str, "%s.%s %s ", name, attr, relation);
+  g_free (relation);
+
+  constant = gtk_editable_get_text (GTK_EDITABLE (editor->constant));
+  c = g_ascii_strtod (constant, NULL);
+
+  attr = gtk_combo_box_get_active_id (GTK_COMBO_BOX (editor->source_attr));
+  if (strcmp (attr, "none") != 0)
+    {
+      name = gtk_combo_box_get_active_id (GTK_COMBO_BOX (editor->source));
+      multiplier = gtk_editable_get_text (GTK_EDITABLE (editor->multiplier));
+      m = g_ascii_strtod (multiplier, NULL);
+
+      if (name == NULL)
+        name = "[ ]";
+
+      g_string_append_printf (str, "%s.%s", name, attr);
+
+      if (m != 1.0)
+        g_string_append_printf (str, " × %g", m);
+
+      if (c > 0.0)
+        g_string_append_printf (str, " + %g", c);
+      else if (c < 0.0)
+        g_string_append_printf (str, " - %g", -c);
+    }
+  else
+    g_string_append_printf (str, "%g", c);
+
+  gtk_label_set_label (GTK_LABEL (editor->preview), str->str);
+
+  g_string_free (str, TRUE);
+}
+
+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)))
+    gtk_widget_set_sensitive (editor->button, TRUE);
+  else
+    gtk_widget_set_sensitive (editor->button, FALSE);
+}
+
+static void
+constraint_editor_init (ConstraintEditor *editor)
+{
+  gtk_widget_init_template (GTK_WIDGET (editor));
+}
+
+static void
+constraint_editor_constructed (GObject *object)
+{
+  ConstraintEditor *editor = CONSTRAINT_EDITOR (object);
+
+  constraint_target_combo (editor->model, editor->target, FALSE);
+  constraint_attribute_combo (editor->target_attr, FALSE);
+  constraint_relation_combo (editor->relation);
+  constraint_target_combo (editor->model, editor->source, TRUE);
+  constraint_attribute_combo (editor->source_attr, TRUE);
+
+  constraint_strength_combo (editor->strength);
+
+  if (editor->constraint)
+    {
+      GtkConstraintTarget *target;
+      GtkConstraintAttribute attr;
+      GtkConstraintRelation relation;
+      GtkConstraintStrength strength;
+      const char *nick;
+      char *val;
+      double multiplier;
+      double constant;
+
+      target = gtk_constraint_get_target (editor->constraint);
+      nick = get_target_name (target);
+      gtk_combo_box_set_active_id (GTK_COMBO_BOX (editor->target), nick);
+
+      attr = gtk_constraint_get_target_attribute (editor->constraint);
+      nick = get_attr_nick (attr);
+      gtk_combo_box_set_active_id (GTK_COMBO_BOX (editor->target_attr), nick);
+
+      target = gtk_constraint_get_source (editor->constraint);
+      nick = get_target_name (target);
+      gtk_combo_box_set_active_id (GTK_COMBO_BOX (editor->source), nick);
+
+      attr = gtk_constraint_get_source_attribute (editor->constraint);
+      nick = get_attr_nick (attr);
+      gtk_combo_box_set_active_id (GTK_COMBO_BOX (editor->source_attr), nick);
+
+      relation = gtk_constraint_get_relation (editor->constraint);
+      nick = get_relation_nick (relation);
+      gtk_combo_box_set_active_id (GTK_COMBO_BOX (editor->relation), nick);
+
+      multiplier = gtk_constraint_get_multiplier (editor->constraint);
+      val = g_strdup_printf ("%g", multiplier);
+      gtk_editable_set_text (GTK_EDITABLE (editor->multiplier), val);
+      g_free (val);
+
+      constant = gtk_constraint_get_constant (editor->constraint);
+      val = g_strdup_printf ("%g", constant);
+      gtk_editable_set_text (GTK_EDITABLE (editor->constant), val);
+      g_free (val);
+
+      strength = gtk_constraint_get_strength (editor->constraint);
+      nick = get_strength_nick (strength);
+      gtk_combo_box_set_active_id (GTK_COMBO_BOX (editor->strength), nick);
+
+      gtk_button_set_label (GTK_BUTTON (editor->button), "Apply");
+    }
+  else
+    {
+      gtk_combo_box_set_active_id (GTK_COMBO_BOX (editor->target_attr), "left");
+      gtk_combo_box_set_active_id (GTK_COMBO_BOX (editor->source_attr), "left");
+      gtk_combo_box_set_active_id (GTK_COMBO_BOX (editor->relation), "eq");
+      gtk_combo_box_set_active_id (GTK_COMBO_BOX (editor->strength), "required");
+
+      gtk_editable_set_text (GTK_EDITABLE (editor->multiplier), "1.0");
+      gtk_editable_set_text (GTK_EDITABLE (editor->constant), "0.0");
+
+      gtk_button_set_label (GTK_BUTTON (editor->button), "Create");
+    }
+
+  editor->constructed = TRUE;
+  update_preview (editor);
+  update_button (editor);
+}
+
+static void
+constraint_editor_set_property (GObject      *object,
+                                guint         property_id,
+                                const GValue *value,
+                                GParamSpec   *pspec)
+{
+  ConstraintEditor *self = CONSTRAINT_EDITOR (object);
+
+  switch (property_id)
+    {
+    case PROP_MODEL:
+      self->model = g_value_dup_object (value);
+      break;
+
+    case PROP_CONSTRAINT:
+      self->constraint = g_value_dup_object (value);
+      break;
+
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+    }
+}
+
+static void
+constraint_editor_get_property (GObject    *object,
+                                guint       property_id,
+                                GValue     *value,
+                                GParamSpec *pspec)
+{
+  ConstraintEditor *self = CONSTRAINT_EDITOR (object);
+
+  switch (property_id)
+    {
+    case PROP_MODEL:
+      g_value_set_object (value, self->model);
+      break;
+
+    case PROP_CONSTRAINT:
+      g_value_set_object (value, self->constraint);
+      break;
+
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+    }
+}
+
+static void
+constraint_editor_dispose (GObject *object)
+{
+  ConstraintEditor *self = (ConstraintEditor *)object;
+
+  g_clear_pointer (&self->grid, gtk_widget_unparent);
+  g_clear_object (&self->model);
+  g_clear_object (&self->constraint);
+
+  G_OBJECT_CLASS (constraint_editor_parent_class)->dispose (object);
+}
+
+static void
+constraint_editor_class_init (ConstraintEditorClass *class)
+{
+  GObjectClass *object_class = G_OBJECT_CLASS (class);
+  GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
+
+  object_class->constructed = constraint_editor_constructed;
+  object_class->dispose = constraint_editor_dispose;
+  object_class->set_property = constraint_editor_set_property;
+  object_class->get_property = constraint_editor_get_property;
+
+  pspecs[PROP_CONSTRAINT] =
+    g_param_spec_object ("constraint", "constraint", "constraint",
+                         GTK_TYPE_CONSTRAINT,
+                         G_PARAM_READWRITE|G_PARAM_CONSTRUCT_ONLY);
+
+  pspecs[PROP_MODEL] =
+    g_param_spec_object ("model", "model", "model",
+                         G_TYPE_LIST_MODEL,
+                         G_PARAM_READWRITE|G_PARAM_CONSTRUCT_ONLY);
+
+  g_object_class_install_properties (object_class, LAST_PROP, pspecs);
+
+  signals[DONE] =
+    g_signal_new ("done",
+                  G_TYPE_FROM_CLASS (object_class),
+                  G_SIGNAL_RUN_LAST,
+                  0,
+                  NULL, NULL,
+                  NULL,
+                  G_TYPE_NONE, 1, GTK_TYPE_CONSTRAINT);
+
+  gtk_widget_class_set_layout_manager_type (widget_class, GTK_TYPE_BIN_LAYOUT);
+
+  gtk_widget_class_set_template_from_resource (widget_class,
+                                               "/org/gtk/gtk4/constraint-editor/constraint-editor.ui");
+
+  gtk_widget_class_bind_template_child (widget_class, ConstraintEditor, grid);
+  gtk_widget_class_bind_template_child (widget_class, ConstraintEditor, target);
+  gtk_widget_class_bind_template_child (widget_class, ConstraintEditor, target_attr);
+  gtk_widget_class_bind_template_child (widget_class, ConstraintEditor, relation);
+  gtk_widget_class_bind_template_child (widget_class, ConstraintEditor, source);
+  gtk_widget_class_bind_template_child (widget_class, ConstraintEditor, source_attr);
+  gtk_widget_class_bind_template_child (widget_class, ConstraintEditor, multiplier);
+  gtk_widget_class_bind_template_child (widget_class, ConstraintEditor, constant);
+  gtk_widget_class_bind_template_child (widget_class, ConstraintEditor, strength);
+  gtk_widget_class_bind_template_child (widget_class, ConstraintEditor, preview);
+  gtk_widget_class_bind_template_child (widget_class, ConstraintEditor, button);
+
+  gtk_widget_class_bind_template_callback (widget_class, update_preview);
+  gtk_widget_class_bind_template_callback (widget_class, update_button);
+  gtk_widget_class_bind_template_callback (widget_class, create_constraint);
+  gtk_widget_class_bind_template_callback (widget_class, source_attr_changed);
+}
+
+ConstraintEditor *
+constraint_editor_new (GListModel    *model,
+                       GtkConstraint *constraint)
+{
+  return g_object_new (CONSTRAINT_EDITOR_TYPE,
+                       "model", model,
+                       "constraint", constraint,
+                       NULL);
+}

demos/constraint-editor/constraint-editor.css

@@ -0,0 +1,12 @@
+constraintview {
+  background: black;
+  color: white;
+}
+
+constraintview .child {
+  background: red;
+}
+
+constraintview .guide {
+  background: blue;
+}

demos/constraint-editor/constraint-editor.gresource.xml

@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<gresources>
+  <gresource prefix="/org/gtk/gtk4/constraint-editor">
+    <file preprocess="xml-stripblanks">constraint-editor-window.ui</file>
+    <file preprocess="xml-stripblanks">constraint-editor.ui</file>
+    <file preprocess="xml-stripblanks">guide-editor.ui</file>
+    <file>constraint-editor.css</file>
+  </gresource>
+</gresources>

demos/constraint-editor/constraint-editor.h

@@ -0,0 +1,34 @@
+/*
+ * Copyright © 2019 Red Hat, Inc
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Authors: Matthias Clasen
+ */
+
+#pragma once
+
+#include <gtk/gtk.h>
+
+#define CONSTRAINT_EDITOR_TYPE (constraint_editor_get_type ())
+
+G_DECLARE_FINAL_TYPE (ConstraintEditor, constraint_editor, CONSTRAINT, EDITOR, GtkWidget)
+
+ConstraintEditor * constraint_editor_new (GListModel    *model,
+                                          GtkConstraint *constraint);
+
+void constraint_editor_serialize_constraint (GString       *str,
+                                             int            indent,
+                                             GtkConstraint *constraint);
+char *constraint_editor_constraint_to_string (GtkConstraint *constraint);

demos/constraint-editor/constraint-editor.ui

@@ -0,0 +1,167 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<interface>
+  <template class="ConstraintEditor" parent="GtkWidget">
+    <child>
+      <object class="GtkGrid" id="grid">
+        <property name="margin-start">20</property>
+        <property name="margin-end">20</property>
+        <property name="margin-top">20</property>
+        <property name="margin-bottom">20</property>
+        <property name="row-spacing">10</property>
+        <property name="column-spacing">10</property>
+        <child>
+          <object class="GtkLabel">
+            <property name="label">Target</property>
+            <layout>
+              <property name="column">0</property>
+              <property name="row">1</property>
+            </layout>
+          </object>
+        </child>
+        <child>
+          <object class="GtkComboBoxText" id="target">
+            <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>
+            </layout>
+          </object>
+        </child>
+        <child>
+          <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>
+            </layout>
+          </object>
+        </child>
+        <child>
+          <object class="GtkLabel">
+            <property name="label">Relation</property>
+            <layout>
+              <property name="column">0</property>
+              <property name="row">2</property>
+            </layout>
+          </object>
+        </child>
+        <child>
+          <object class="GtkComboBoxText" id="relation">
+            <signal name="changed" handler="update_preview" swapped="yes"/>
+            <layout>
+              <property name="column">1</property>
+              <property name="row">2</property>
+            </layout>
+          </object>
+        </child>
+        <child>
+          <object class="GtkLabel">
+            <property name="label">Source</property>
+            <layout>
+              <property name="column">0</property>
+              <property name="row">3</property>
+            </layout>
+          </object>
+        </child>
+        <child>
+          <object class="GtkComboBoxText" id="source">
+            <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>
+            </layout>
+          </object>
+        </child>
+        <child>
+          <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>
+            </layout>
+          </object>
+        </child>
+        <child>
+          <object class="GtkLabel">
+            <property name="label">Multiplier</property>
+            <layout>
+              <property name="column">0</property>
+              <property name="row">4</property>
+            </layout>
+          </object>
+        </child>
+        <child>
+          <object class="GtkEntry" id="multiplier">
+            <signal name="changed" handler="update_preview" swapped="yes"/>
+            <layout>
+              <property name="column">1</property>
+              <property name="row">4</property>
+            </layout>
+          </object>
+        </child>
+        <child>
+          <object class="GtkLabel">
+            <property name="label">Constant</property>
+            <layout>
+              <property name="column">0</property>
+              <property name="row">5</property>
+            </layout>
+          </object>
+        </child>
+        <child>
+          <object class="GtkEntry" id="constant">
+            <signal name="changed" handler="update_preview" swapped="yes"/>
+            <layout>
+              <property name="column">1</property>
+              <property name="row">5</property>
+            </layout>
+          </object>
+        </child>
+        <child>
+          <object class="GtkLabel">
+            <property name="label">Strength</property>
+            <layout>
+              <property name="column">0</property>
+              <property name="row">6</property>
+            </layout>
+          </object>
+        </child>
+        <child>
+          <object class="GtkComboBoxText" id="strength">
+            <layout>
+              <property name="column">1</property>
+              <property name="row">6</property>
+            </layout>
+          </object>
+        </child>
+        <child>
+          <object class="GtkLabel" id="preview">
+            <property name="xalign">0</property>
+            <layout>
+              <property name="column">1</property>
+              <property name="row">7</property>
+              <property name="column-span">2</property>
+            </layout>
+            <attributes>
+              <attribute name="scale" value="1.44"/>
+            </attributes>
+          </object>
+        </child>
+        <child>
+          <object class="GtkButton" id="button">
+            <property name="label">Create</property>
+            <signal name="clicked" handler="create_constraint"/>
+            <layout>
+              <property name="column">2</property>
+              <property name="row">8</property>
+            </layout>
+          </object>
+        </child>
+      </object>
+    </child>
+  </template>
+</interface>

demos/constraint-editor/constraint-view-child.c

@@ -0,0 +1,93 @@
+/*
+ * Copyright © 2019 Red Hat, Inc
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Authors: Matthias Clasen
+ */
+
+#include "constraint-view-child.h"
+
+struct _ConstraintViewChild
+{
+  GObject parent_instance;
+
+  char *name;
+};
+
+enum {
+  PROP_NAME = 1,
+  LAST_PROP
+};
+
+static GParamSpec props[LAST_PROP];
+
+G_DEFINE_TYPE (ConstraintViewChild, constraint_view_child, G_TYPE_OBJECT)
+
+static void
+constraint_view_child_init (ConstraintViewChild *child)
+{
+}
+
+static void
+constraint_view_child_finalize (GObject *object)
+{
+  ConstraintViewChild *child = CONSTRAINT_VIEW_CHILD (object);
+
+  g_free (child->name);
+
+  G_OBJECT_CLASS (constraint_view_child_parent_class)->finalize (object);
+}
+
+static void
+constraint_view_child_set_property (GObject *object,
+                                    
+static void
+constraint_view_child_class_init (ConstraintViewChildClass *class)
+{
+  GObjectClass *object_class = G_OBJECT_CLASS (class);
+
+  object_class->finalize = constraint_view_child_finalize;
+  object_class->get_property = constraint_view_child_get_property;
+  object_class->set_property = constraint_view_child_set_property;
+
+  props[PROP_NAME] =
+    g_param_spec_string ("name", "name", "name",
+                         NULL,
+                         G_PARAM_READWRITE);
+
+  g_object_class_install_properties (object_class, LAST_PROP, props);
+}
+
+#define CONSTRAINT_VIEW_CHILD_TYPE (constraint_view_get_type ())
+
+G_DECLARE_TYPE (ConstraintViewChild, constraint_view_child, CONSTRAINT, VIEW_CHILD, GObject)
+
+#define CONSTRAINT_VIEW_WIDGET_TYPE (constraint_view_widget_get_type ())
+
+G_DECLARE_FINAL_TYPE (ConstraintViewWidget, constraint_view_widget, CONSTRAINT, VIEW_WIDGET, ConstraintViewChild)
+
+ConstraintViewWidget * constraint_view_widget_new (void);
+
+#define CONSTRAINT_VIEW_GUIDE_TYPE (constraint_view_guide_get_type ())
+
+G_DECLARE_FINAL_TYPE (ConstraintViewGuide, constraint_view_guide, CONSTRAINT, VIEW_GUIDE, ConstraintViewChild)
+
+ConstraintViewGuide * constraint_view_guide_new (void);
+
+#define CONSTRAINT_VIEW_CONSTRAINT_TYPE (constraint_view_constraint_get_type ())
+
+G_DECLARE_FINAL_TYPE (ConstraintViewConstraint, constraint_view_constraint, CONSTRAINT, VIEW_CONSTRAINT, ConstraintViewChild)
+
+ConstraintViewGuide * constraint_view_constraint_new (void);

demos/constraint-editor/constraint-view-child.h

@@ -0,0 +1,44 @@
+/*
+ * Copyright © 2019 Red Hat, Inc
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Authors: Matthias Clasen
+ */
+
+#pragma once
+
+#include <gtk/gtk.h>
+
+#define CONSTRAINT_VIEW_CHILD_TYPE (constraint_view_get_type ())
+
+G_DECLARE_TYPE (ConstraintViewChild, constraint_view_child, CONSTRAINT, VIEW_CHILD, GObject)
+
+#define CONSTRAINT_VIEW_WIDGET_TYPE (constraint_view_widget_get_type ())
+
+G_DECLARE_FINAL_TYPE (ConstraintViewWidget, constraint_view_widget, CONSTRAINT, VIEW_WIDGET, ConstraintViewChild)
+
+ConstraintViewWidget * constraint_view_widget_new (void);
+
+#define CONSTRAINT_VIEW_GUIDE_TYPE (constraint_view_guide_get_type ())
+
+G_DECLARE_FINAL_TYPE (ConstraintViewGuide, constraint_view_guide, CONSTRAINT, VIEW_GUIDE, ConstraintViewChild)
+
+ConstraintViewGuide * constraint_view_guide_new (void);
+
+#define CONSTRAINT_VIEW_CONSTRAINT_TYPE (constraint_view_constraint_get_type ())
+
+G_DECLARE_FINAL_TYPE (ConstraintViewConstraint, constraint_view_constraint, CONSTRAINT, VIEW_CONSTRAINT, ConstraintViewChild)
+
+ConstraintViewGuide * constraint_view_constraint_new (void);

demos/constraint-editor/constraint-view.c

@@ -0,0 +1,345 @@
+/* Copyright (C) 2019 Red Hat, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <gtk/gtk.h>
+#include "constraint-view.h"
+
+struct _ConstraintView
+{
+  GtkWidget parent;
+
+  GListModel *model;
+
+  GtkWidget *drag_widget;
+};
+
+G_DEFINE_TYPE (ConstraintView, constraint_view, GTK_TYPE_WIDGET);
+
+static void
+constraint_view_dispose (GObject *object)
+{
+  ConstraintView *view = CONSTRAINT_VIEW (object);
+  GtkWidget *child;
+
+  while ((child = gtk_widget_get_first_child (GTK_WIDGET (view))) != NULL)
+    gtk_widget_unparent (child);
+
+  g_clear_object (&view->model);
+
+  G_OBJECT_CLASS (constraint_view_parent_class)->dispose (object);
+}
+
+static void
+constraint_view_class_init (ConstraintViewClass *klass)
+{
+  GObjectClass *object_class = G_OBJECT_CLASS (klass);
+  GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
+
+  object_class->dispose = constraint_view_dispose;
+
+  gtk_widget_class_set_css_name (widget_class, "constraintview");
+}
+
+static void
+update_weak_position (ConstraintView *self,
+                      GtkWidget      *child,
+                      double          x,
+                      double          y)
+{
+  GtkLayoutManager *manager;
+  GtkConstraint *constraint;
+
+  manager = gtk_widget_get_layout_manager (GTK_WIDGET (self));
+  constraint = (GtkConstraint *)g_object_get_data (G_OBJECT (child), "x-constraint");
+  if (constraint)
+    {
+      gtk_constraint_layout_remove_constraint (GTK_CONSTRAINT_LAYOUT (manager),
+                                               constraint);
+      g_object_set_data (G_OBJECT (child), "x-constraint", NULL);
+    }
+  if (x != -100)
+    {
+      constraint = gtk_constraint_new_constant (child,
+                                                GTK_CONSTRAINT_ATTRIBUTE_CENTER_X,
+                                                GTK_CONSTRAINT_RELATION_EQ,
+                                                x,
+                                                GTK_CONSTRAINT_STRENGTH_WEAK);
+      g_object_set_data (G_OBJECT (constraint), "internal", (char *)"yes");
+      gtk_constraint_layout_add_constraint (GTK_CONSTRAINT_LAYOUT (manager),
+                                            constraint);
+      g_object_set_data (G_OBJECT (child), "x-constraint", constraint);
+    }
+
+  constraint = (GtkConstraint *)g_object_get_data (G_OBJECT (child), "y-constraint");
+  if (constraint)
+    {
+      gtk_constraint_layout_remove_constraint (GTK_CONSTRAINT_LAYOUT (manager),
+                                                   constraint);
+      g_object_set_data (G_OBJECT (child), "y-constraint", NULL);
+    }
+  if (y != -100)
+    {
+      constraint = gtk_constraint_new_constant (child,
+                                                GTK_CONSTRAINT_ATTRIBUTE_CENTER_Y,
+                                                GTK_CONSTRAINT_RELATION_EQ,
+                                                y,
+                                                GTK_CONSTRAINT_STRENGTH_WEAK);
+      g_object_set_data (G_OBJECT (constraint), "internal", (char *)"yes");
+      gtk_constraint_layout_add_constraint (GTK_CONSTRAINT_LAYOUT (manager),
+                                            constraint);
+      g_object_set_data (G_OBJECT (child), "y-constraint", constraint);
+    }
+}
+
+static void
+drag_begin (GtkGestureDrag *drag,
+            double          start_x,
+            double          start_y,
+            ConstraintView *self)
+{
+  GtkWidget *widget;
+
+  widget = gtk_widget_pick (GTK_WIDGET (self), start_x, start_y, GTK_PICK_DEFAULT);
+
+  if (GTK_IS_LABEL (widget))
+    {
+      widget = gtk_widget_get_ancestor (widget, GTK_TYPE_FRAME);
+      if (widget &&
+          gtk_widget_get_parent (widget) == (GtkWidget *)self)
+        {
+          self->drag_widget = widget;
+        }
+    }
+}
+
+static void
+drag_update (GtkGestureDrag *drag,
+             double          offset_x,
+             double          offset_y,
+             ConstraintView *self)
+{
+  double x, y;
+
+  if (!self->drag_widget)
+    return;
+
+  gtk_gesture_drag_get_start_point (drag, &x, &y);
+  update_weak_position (self, self->drag_widget, x + offset_x, y + offset_y);
+}
+
+static void
+drag_end (GtkGestureDrag *drag,
+          double          offset_x,
+          double          offset_y,
+          ConstraintView *self)
+{
+  self->drag_widget = NULL;
+}
+
+static gboolean
+omit_internal (gpointer item, gpointer user_data)
+{
+  if (g_object_get_data (G_OBJECT (item), "internal"))
+    return FALSE;
+
+  return TRUE;
+}
+
+static void
+constraint_view_init (ConstraintView *self)
+{
+  GtkLayoutManager *manager;
+  GtkEventController *controller;
+  GListStore *list;
+  GListModel *all_children;
+  GListModel *all_constraints;
+  GListModel *guides;
+  GListModel *children;
+  GListModel *constraints;
+  GtkFilter *filter;
+
+  manager = gtk_constraint_layout_new ();
+  gtk_widget_set_layout_manager (GTK_WIDGET (self), manager);
+
+  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));
+  constraints = (GListModel *)gtk_filter_list_model_new (all_constraints, filter);
+
+  all_children = gtk_widget_observe_children (GTK_WIDGET (self));
+  filter = GTK_FILTER (gtk_custom_filter_new (omit_internal, NULL, NULL));
+  children = (GListModel *)gtk_filter_list_model_new (all_children, filter);
+
+  list = g_list_store_new (G_TYPE_LIST_MODEL);
+  g_list_store_append (list, children);
+  g_list_store_append (list, guides);
+  g_list_store_append (list, constraints);
+  g_object_unref (children);
+  g_object_unref (guides);
+  g_object_unref (constraints);
+
+  self->model = G_LIST_MODEL (gtk_flatten_list_model_new (G_LIST_MODEL (list)));
+
+  controller = (GtkEventController *)gtk_gesture_drag_new ();
+  g_signal_connect (controller, "drag-begin", G_CALLBACK (drag_begin), self);
+  g_signal_connect (controller, "drag-update", G_CALLBACK (drag_update), self);
+  g_signal_connect (controller, "drag-end", G_CALLBACK (drag_end), self);
+  gtk_widget_add_controller (GTK_WIDGET (self), controller);
+}
+
+ConstraintView *
+constraint_view_new (void)
+{
+  return g_object_new (CONSTRAINT_VIEW_TYPE, NULL);
+}
+
+void
+constraint_view_add_child (ConstraintView *view,
+                           const char     *name)
+{
+  GtkWidget *frame;
+  GtkWidget *label;
+
+  label = gtk_label_new (name);
+  frame = gtk_frame_new (NULL);
+  gtk_widget_add_css_class (frame, "child");
+  gtk_widget_set_name (frame, name);
+  gtk_frame_set_child (GTK_FRAME (frame), label);
+  gtk_widget_set_parent (frame, GTK_WIDGET (view));
+
+  update_weak_position (view, frame, 100, 100);
+}
+
+void
+constraint_view_remove_child (ConstraintView *view,
+                              GtkWidget      *child)
+{
+  update_weak_position (view, child, -100, -100);
+  gtk_widget_unparent (child);
+}
+
+void
+constraint_view_add_guide (ConstraintView *view,
+                           GtkConstraintGuide *guide)
+{
+  GtkConstraintLayout *layout;
+  GtkWidget *frame;
+  GtkWidget *label;
+  const char *name;
+  GtkConstraint *constraint;
+  struct {
+    const char *name;
+    GtkConstraintAttribute attr;
+  } names[] = {
+    { "left-constraint", GTK_CONSTRAINT_ATTRIBUTE_LEFT },
+    { "top-constraint", GTK_CONSTRAINT_ATTRIBUTE_TOP },
+    { "width-constraint", GTK_CONSTRAINT_ATTRIBUTE_WIDTH },
+    { "height-constraint", GTK_CONSTRAINT_ATTRIBUTE_HEIGHT },
+  };
+  int i;
+
+  name = gtk_constraint_guide_get_name (guide);
+  label = gtk_label_new (name);
+  g_object_bind_property (guide, "name",
+                          label, "label",
+                          G_BINDING_DEFAULT);
+
+  frame = gtk_frame_new (NULL);
+  gtk_widget_add_css_class (frame, "guide");
+  g_object_set_data (G_OBJECT (frame), "internal", (char *)"yes");
+  gtk_frame_set_child (GTK_FRAME (frame), label);
+  gtk_widget_insert_after (frame, GTK_WIDGET (view), NULL);
+
+  g_object_set_data (G_OBJECT (guide), "frame", frame);
+
+  layout = GTK_CONSTRAINT_LAYOUT (gtk_widget_get_layout_manager (GTK_WIDGET (view)));
+  gtk_constraint_layout_add_guide (layout, g_object_ref (guide));
+
+  for (i = 0; i < G_N_ELEMENTS (names); i++)
+    {
+      constraint = gtk_constraint_new (frame,
+                                       names[i].attr,
+                                       GTK_CONSTRAINT_RELATION_EQ,
+                                       guide,
+                                       names[i].attr,
+                                       1.0, 0.0,
+                                       GTK_CONSTRAINT_STRENGTH_REQUIRED);
+      g_object_set_data (G_OBJECT (constraint), "internal", (char *)"yes");
+      gtk_constraint_layout_add_constraint (layout, constraint);
+      g_object_set_data (G_OBJECT (guide), names[i].name, constraint);
+    }
+
+  update_weak_position (view, frame, 150, 150);
+}
+
+void
+constraint_view_remove_guide (ConstraintView     *view,
+                              GtkConstraintGuide *guide)
+{
+  GtkConstraintLayout *layout;
+  GtkWidget *frame;
+  GtkConstraint *constraint;
+  const char *names[] = {
+    "left-constraint",
+    "top-constraint",
+    "width-constraint",
+    "height-constraint"
+  };
+  int i;
+
+  layout = GTK_CONSTRAINT_LAYOUT (gtk_widget_get_layout_manager (GTK_WIDGET (view)));
+
+  for (i = 0; i < G_N_ELEMENTS (names); i++)
+    {
+      constraint = (GtkConstraint*)g_object_get_data (G_OBJECT (guide), names[i]);
+      gtk_constraint_layout_remove_constraint (layout, constraint);
+    }
+
+  frame = (GtkWidget *)g_object_get_data (G_OBJECT (guide), "frame");
+  update_weak_position (view, frame, -100, -100);
+  gtk_widget_unparent (frame);
+
+  gtk_constraint_layout_remove_guide (layout, guide);
+}
+
+void
+constraint_view_add_constraint (ConstraintView *view,
+                                GtkConstraint  *constraint)
+{
+  GtkLayoutManager *manager;
+
+  manager = gtk_widget_get_layout_manager (GTK_WIDGET (view));
+  gtk_constraint_layout_add_constraint (GTK_CONSTRAINT_LAYOUT (manager),
+                                        g_object_ref (constraint));
+}
+
+void
+constraint_view_remove_constraint (ConstraintView *view,
+                                   GtkConstraint  *constraint)
+{
+  GtkLayoutManager *manager;
+
+  manager = gtk_widget_get_layout_manager (GTK_WIDGET (view));
+  gtk_constraint_layout_remove_constraint (GTK_CONSTRAINT_LAYOUT (manager),
+                                           constraint);
+}
+
+GListModel *
+constraint_view_get_model (ConstraintView *view)
+{
+  return view->model;
+}

demos/constraint-editor/constraint-view.h

@@ -0,0 +1,45 @@
+/*
+ * Copyright © 2019 Red Hat, Inc
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Authors: Matthias Clasen
+ */
+
+#pragma once
+
+#include <gtk/gtk.h>
+
+#define CONSTRAINT_VIEW_TYPE (constraint_view_get_type ())
+
+G_MODULE_EXPORT
+G_DECLARE_FINAL_TYPE (ConstraintView, constraint_view, CONSTRAINT, VIEW, GtkWidget)
+
+ConstraintView * constraint_view_new (void);
+
+void             constraint_view_add_child (ConstraintView *view,
+                                            const char     *name);
+void             constraint_view_remove_child (ConstraintView *view,
+                                               GtkWidget      *child);
+void             constraint_view_add_guide (ConstraintView     *view,
+                                            GtkConstraintGuide *guide);
+void             constraint_view_remove_guide (ConstraintView     *view,
+                                               GtkConstraintGuide *guide);
+void             constraint_view_guide_changed (ConstraintView     *view,
+                                                GtkConstraintGuide *guide);
+void             constraint_view_add_constraint (ConstraintView *view,
+                                                 GtkConstraint  *constraint);
+void             constraint_view_remove_constraint (ConstraintView *view,
+                                                    GtkConstraint  *constraint);
+GListModel *     constraint_view_get_model (ConstraintView *view);

demos/constraint-editor/guide-editor.c

@@ -0,0 +1,355 @@
+/*
+ * Copyright © 2019 Red Hat, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Authors: Matthias Clasen
+ */
+
+#include "config.h"
+
+#include "guide-editor.h"
+
+struct _GuideEditor
+{
+  GtkWidget parent_instance;
+
+  GtkWidget *grid;
+  GtkWidget *name;
+  GtkWidget *min_width;
+  GtkWidget *min_height;
+  GtkWidget *nat_width;
+  GtkWidget *nat_height;
+  GtkWidget *max_width;
+  GtkWidget *max_height;
+  GtkWidget *strength;
+  GtkWidget *button;
+
+  GtkConstraintGuide *guide;
+
+  gboolean constructed;
+};
+
+enum {
+  PROP_GUIDE = 1,
+  LAST_PROP
+};
+
+static GParamSpec *pspecs[LAST_PROP];
+
+enum {
+  DONE,
+  LAST_SIGNAL
+};
+
+static guint signals[LAST_SIGNAL];
+
+G_DEFINE_TYPE(GuideEditor, guide_editor, GTK_TYPE_WIDGET);
+
+static void
+guide_strength_combo (GtkWidget *combo)
+{
+  gtk_combo_box_text_append (GTK_COMBO_BOX_TEXT (combo), "weak", "Weak");
+  gtk_combo_box_text_append (GTK_COMBO_BOX_TEXT (combo), "medium", "Medium");
+  gtk_combo_box_text_append (GTK_COMBO_BOX_TEXT (combo), "strong", "Strong");
+  gtk_combo_box_text_append (GTK_COMBO_BOX_TEXT (combo), "required", "Required");
+}
+
+static GtkConstraintStrength
+get_strength (const char *id)
+{
+  GtkConstraintStrength strength;
+  GEnumClass *class = g_type_class_ref (GTK_TYPE_CONSTRAINT_STRENGTH);
+  GEnumValue *value = g_enum_get_value_by_nick (class, id);
+  strength = value->value;
+  g_type_class_unref (class);
+
+  return strength;
+}
+
+static const char *
+get_strength_nick (GtkConstraintStrength strength)
+{
+  GEnumClass *class = g_type_class_ref (GTK_TYPE_CONSTRAINT_STRENGTH);
+  GEnumValue *value = g_enum_get_value (class, strength);
+  const char *nick = value->value_nick;
+  g_type_class_unref (class);
+
+  return nick;
+}
+
+void
+guide_editor_serialize_guide (GString *str,
+                              int      indent,
+                              GtkConstraintGuide *guide)
+{
+  int min_width, min_height;
+  int nat_width, nat_height;
+  int max_width, max_height;
+  const char *name;
+  const char *strength;
+
+  gtk_constraint_guide_get_min_size (guide, &min_width, &min_height);
+  gtk_constraint_guide_get_nat_size (guide, &nat_width, &nat_height);
+  gtk_constraint_guide_get_max_size (guide, &max_width, &max_height);
+  name = gtk_constraint_guide_get_name (guide);
+  strength = get_strength_nick (gtk_constraint_guide_get_strength (guide));
+
+  g_string_append_printf (str, "%*s<guide min-width=\"%d\" min-height=\"%d\"\n", indent, "", min_width, min_height);
+  g_string_append_printf (str, "%*s       nat-width=\"%d\" nat-height=\"%d\"\n", indent, "", nat_width, nat_height);
+  g_string_append_printf (str, "%*s       max-width=\"%d\" max-height=\"%d\"\n", indent, "", max_width, max_height);
+  g_string_append_printf (str, "%*s       name=\"%s\" strength=\"%s\" />\n", indent, "", name, strength);
+}
+
+static void
+create_guide (GtkButton   *button,
+              GuideEditor *editor)
+{
+  const char *id;
+  int strength;
+  const char *name;
+  int w, h;
+  GtkConstraintGuide *guide;
+
+  if (editor->guide)
+    guide = g_object_ref (editor->guide);
+  else
+    guide = gtk_constraint_guide_new ();
+
+  name = gtk_editable_get_text (GTK_EDITABLE (editor->name));
+  gtk_constraint_guide_set_name (guide, name);
+
+  w = gtk_spin_button_get_value_as_int (GTK_SPIN_BUTTON (editor->min_width));
+  h = gtk_spin_button_get_value_as_int (GTK_SPIN_BUTTON (editor->min_height));
+  gtk_constraint_guide_set_min_size (guide, w, h);
+
+  w = gtk_spin_button_get_value_as_int (GTK_SPIN_BUTTON (editor->nat_width));
+  h = gtk_spin_button_get_value_as_int (GTK_SPIN_BUTTON (editor->nat_height));
+  gtk_constraint_guide_set_nat_size (guide, w, h);
+
+  w = gtk_spin_button_get_value_as_int (GTK_SPIN_BUTTON (editor->max_width));
+  h = gtk_spin_button_get_value_as_int (GTK_SPIN_BUTTON (editor->max_height));
+  gtk_constraint_guide_set_max_size (guide, w, h);
+
+  id = gtk_combo_box_get_active_id (GTK_COMBO_BOX (editor->strength));
+  strength = get_strength (id);
+  gtk_constraint_guide_set_strength (guide, strength);
+
+  g_signal_emit (editor, signals[DONE], 0, guide);
+  g_object_unref (guide);
+}
+
+static void
+guide_editor_init (GuideEditor *editor)
+{
+  gtk_widget_init_template (GTK_WIDGET (editor));
+}
+
+static int guide_counter;
+
+static int
+min_input (GtkSpinButton *spin_button,
+           double        *new_val)
+{
+  if (strcmp (gtk_editable_get_text (GTK_EDITABLE (spin_button)), "") == 0)
+    {
+      *new_val = 0.0;
+      return TRUE;
+    }
+
+  return FALSE;
+}
+
+static int
+max_input (GtkSpinButton *spin_button,
+           double        *new_val)
+{
+  if (strcmp (gtk_editable_get_text (GTK_EDITABLE (spin_button)), "") == 0)
+    {
+      *new_val = G_MAXINT;
+      return TRUE;
+    }
+
+  return FALSE;
+}
+
+static void
+guide_editor_constructed (GObject *object)
+{
+  GuideEditor *editor = GUIDE_EDITOR (object);
+
+  guide_strength_combo (editor->strength);
+
+  g_signal_connect (editor->min_width, "input", G_CALLBACK (min_input), NULL);
+
+  g_signal_connect (editor->min_height, "input", G_CALLBACK (min_input), NULL);
+
+  g_signal_connect (editor->max_width, "input", G_CALLBACK (max_input), NULL);
+
+  g_signal_connect (editor->max_height, "input", G_CALLBACK (max_input), NULL);
+
+  if (editor->guide)
+    {
+      GtkConstraintStrength strength;
+      const char *nick;
+      int w, h;
+
+      nick = gtk_constraint_guide_get_name (editor->guide);
+      if (nick)
+        gtk_editable_set_text (GTK_EDITABLE (editor->name), nick);
+
+      gtk_constraint_guide_get_min_size (editor->guide, &w, &h);
+      gtk_spin_button_set_value (GTK_SPIN_BUTTON (editor->min_width), w);
+      gtk_spin_button_set_value (GTK_SPIN_BUTTON (editor->min_height), h);
+
+      gtk_constraint_guide_get_nat_size (editor->guide, &w, &h);
+      gtk_spin_button_set_value (GTK_SPIN_BUTTON (editor->nat_width), w);
+      gtk_spin_button_set_value (GTK_SPIN_BUTTON (editor->nat_height), h);
+
+      gtk_constraint_guide_get_max_size (editor->guide, &w, &h);
+      gtk_spin_button_set_value (GTK_SPIN_BUTTON (editor->max_width), w);
+      gtk_spin_button_set_value (GTK_SPIN_BUTTON (editor->max_height), h);
+
+      strength = gtk_constraint_guide_get_strength (editor->guide);
+      nick = get_strength_nick (strength);
+      gtk_combo_box_set_active_id (GTK_COMBO_BOX (editor->strength), nick);
+
+      gtk_button_set_label (GTK_BUTTON (editor->button), "Apply");
+    }
+  else
+    {
+      char *name;
+
+      guide_counter++;
+      name = g_strdup_printf ("Guide %d", guide_counter);
+      gtk_editable_set_text (GTK_EDITABLE (editor->name), name);
+      g_free (name);
+
+      gtk_spin_button_set_value (GTK_SPIN_BUTTON (editor->min_width), 0.0);
+      gtk_spin_button_set_value (GTK_SPIN_BUTTON (editor->min_height), 0.0);
+      gtk_spin_button_set_value (GTK_SPIN_BUTTON (editor->nat_width), 0.0);
+      gtk_spin_button_set_value (GTK_SPIN_BUTTON (editor->nat_height), 0.0);
+      gtk_spin_button_set_value (GTK_SPIN_BUTTON (editor->max_width), G_MAXINT);
+      gtk_spin_button_set_value (GTK_SPIN_BUTTON (editor->max_height), G_MAXINT);
+
+      gtk_combo_box_set_active_id (GTK_COMBO_BOX (editor->strength), "medium");
+
+      gtk_button_set_label (GTK_BUTTON (editor->button), "Create");
+    }
+
+  editor->constructed = TRUE;
+}
+
+static void
+guide_editor_set_property (GObject      *object,
+                           guint         property_id,
+                           const GValue *value,
+                           GParamSpec   *pspec)
+{
+  GuideEditor *self = GUIDE_EDITOR (object);
+
+  switch (property_id)
+    {
+    case PROP_GUIDE:
+      self->guide = g_value_dup_object (value);
+      break;
+
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+    }
+}
+
+static void
+guide_editor_get_property (GObject    *object,
+                           guint       property_id,
+                           GValue     *value,
+                           GParamSpec *pspec)
+{
+  GuideEditor *self = GUIDE_EDITOR (object);
+
+  switch (property_id)
+    {
+    case PROP_GUIDE:
+      g_value_set_object (value, self->guide);
+      break;
+
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+    }
+}
+
+static void
+guide_editor_dispose (GObject *object)
+{
+  GuideEditor *self = (GuideEditor *)object;
+
+  g_clear_pointer (&self->grid, gtk_widget_unparent);
+  g_clear_object (&self->guide);
+
+  G_OBJECT_CLASS (guide_editor_parent_class)->dispose (object);
+}
+
+static void
+guide_editor_class_init (GuideEditorClass *class)
+{
+  GObjectClass *object_class = G_OBJECT_CLASS (class);
+  GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
+
+  object_class->constructed = guide_editor_constructed;
+  object_class->dispose = guide_editor_dispose;
+  object_class->set_property = guide_editor_set_property;
+  object_class->get_property = guide_editor_get_property;
+
+  pspecs[PROP_GUIDE] =
+    g_param_spec_object ("guide", "guide", "guide",
+                         GTK_TYPE_CONSTRAINT_GUIDE,
+                         G_PARAM_READWRITE|G_PARAM_CONSTRUCT_ONLY);
+
+  g_object_class_install_properties (object_class, LAST_PROP, pspecs);
+
+  signals[DONE] =
+    g_signal_new ("done",
+                  G_TYPE_FROM_CLASS (object_class),
+                  G_SIGNAL_RUN_LAST,
+                  0,
+                  NULL, NULL,
+                  NULL,
+                  G_TYPE_NONE, 1, GTK_TYPE_CONSTRAINT_GUIDE);
+
+  gtk_widget_class_set_layout_manager_type (widget_class, GTK_TYPE_BIN_LAYOUT);
+
+  gtk_widget_class_set_template_from_resource (widget_class,
+                                               "/org/gtk/gtk4/constraint-editor/guide-editor.ui");
+
+  gtk_widget_class_bind_template_child (widget_class, GuideEditor, grid);
+  gtk_widget_class_bind_template_child (widget_class, GuideEditor, name);
+  gtk_widget_class_bind_template_child (widget_class, GuideEditor, min_width);
+  gtk_widget_class_bind_template_child (widget_class, GuideEditor, min_height);
+  gtk_widget_class_bind_template_child (widget_class, GuideEditor, nat_width);
+  gtk_widget_class_bind_template_child (widget_class, GuideEditor, nat_height);
+  gtk_widget_class_bind_template_child (widget_class, GuideEditor, max_width);
+  gtk_widget_class_bind_template_child (widget_class, GuideEditor, max_height);
+  gtk_widget_class_bind_template_child (widget_class, GuideEditor, strength);
+  gtk_widget_class_bind_template_child (widget_class, GuideEditor, button);
+
+  gtk_widget_class_bind_template_callback (widget_class, create_guide);
+}
+
+GuideEditor *
+guide_editor_new (GtkConstraintGuide *guide)
+{
+  return g_object_new (GUIDE_EDITOR_TYPE,
+                       "guide", guide,
+                       NULL);
+}

demos/constraint-editor/guide-editor.h

@@ -0,0 +1,32 @@
+/*
+ * Copyright © 2019 Red Hat, Inc
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Authors: Matthias Clasen
+ */
+
+#pragma once
+
+#include <gtk/gtk.h>
+
+#define GUIDE_EDITOR_TYPE (guide_editor_get_type ())
+
+G_DECLARE_FINAL_TYPE (GuideEditor, guide_editor, GUIDE, EDITOR, GtkWidget)
+
+GuideEditor * guide_editor_new (GtkConstraintGuide  *guide);
+
+void guide_editor_serialize_guide (GString            *str,
+                                   int                 indent,
+                                   GtkConstraintGuide *guide);

demos/constraint-editor/guide-editor.ui

@@ -0,0 +1,191 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<interface>
+  <object class="GtkAdjustment" id="min_width_adj">
+    <property name="lower">0</property>
+    <property name="upper">2147483647</property>
+    <property name="step-increment">1</property>
+    <property name="page-increment">10</property>
+    <property name="page-size">0</property>
+  </object>
+  <object class="GtkAdjustment" id="min_height_adj">
+    <property name="lower">0</property>
+    <property name="upper">2147483647</property>
+    <property name="step-increment">1</property>
+    <property name="page-increment">10</property>
+    <property name="page-size">0</property>
+  </object>
+  <object class="GtkAdjustment" id="nat_width_adj">
+    <property name="lower">0</property>
+    <property name="upper">2147483647</property>
+    <property name="step-increment">1</property>
+    <property name="page-increment">10</property>
+    <property name="page-size">0</property>
+  </object>
+  <object class="GtkAdjustment" id="nat_height_adj">
+    <property name="lower">0</property>
+    <property name="upper">2147483647</property>
+    <property name="step-increment">1</property>
+    <property name="page-increment">10</property>
+    <property name="page-size">0</property>
+  </object>
+  <object class="GtkAdjustment" id="max_width_adj">
+    <property name="lower">0</property>
+    <property name="upper">2147483647</property>
+    <property name="step-increment">1</property>
+    <property name="page-increment">10</property>
+    <property name="page-size">0</property>
+  </object>
+  <object class="GtkAdjustment" id="max_height_adj">
+    <property name="lower">0</property>
+    <property name="upper">2147483647</property>
+    <property name="step-increment">1</property>
+    <property name="page-increment">10</property>
+    <property name="page-size">0</property>
+  </object>
+  <template class="GuideEditor" parent="GtkWidget">
+    <child>
+      <object class="GtkGrid" id="grid">
+        <property name="margin-start">20</property>
+        <property name="margin-end">20</property>
+        <property name="margin-top">20</property>
+        <property name="margin-bottom">20</property>
+        <property name="row-spacing">10</property>
+        <property name="column-spacing">10</property>
+        <child>
+          <object class="GtkLabel">
+            <property name="label">Name</property>
+            <layout>
+              <property name="column">0</property>
+              <property name="row">0</property>
+            </layout>
+          </object>
+        </child>
+        <child>
+          <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="column-span">2</property>
+            </layout>
+          </object>
+        </child>
+        <child>
+          <object class="GtkLabel">
+            <property name="label">Min Size</property>
+            <layout>
+              <property name="column">0</property>
+              <property name="row">1</property>
+            </layout>
+          </object>
+        </child>
+        <child>
+          <object class="GtkSpinButton" id="min_width">
+            <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>
+            </layout>
+          </object>
+        </child>
+        <child>
+          <object class="GtkSpinButton" id="min_height">
+            <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>
+            </layout>
+          </object>
+        </child>
+        <child>
+          <object class="GtkLabel">
+            <property name="label">Nat Size</property>
+            <layout>
+              <property name="column">0</property>
+              <property name="row">2</property>
+            </layout>
+          </object>
+        </child>
+        <child>
+          <object class="GtkSpinButton" id="nat_width">
+            <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>
+            </layout>
+          </object>
+        </child>
+        <child>
+          <object class="GtkSpinButton" id="nat_height">
+            <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>
+            </layout>
+          </object>
+        </child>
+        <child>
+          <object class="GtkLabel">
+            <property name="label">Max Size</property>
+            <layout>
+              <property name="column">0</property>
+              <property name="row">3</property>
+            </layout>
+          </object>
+        </child>
+        <child>
+          <object class="GtkSpinButton" id="max_width">
+            <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>
+            </layout>
+          </object>
+        </child>
+        <child>
+          <object class="GtkSpinButton" id="max_height">
+            <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>
+            </layout>
+          </object>
+        </child>
+        <child>
+          <object class="GtkLabel">
+            <property name="label">Strength</property>
+            <layout>
+              <property name="column">0</property>
+              <property name="row">4</property>
+            </layout>
+          </object>
+        </child>
+        <child>
+          <object class="GtkComboBoxText" id="strength">
+            <layout>
+              <property name="column">1</property>
+              <property name="row">4</property>
+              <property name="column-span">2</property>
+            </layout>
+          </object>
+        </child>
+        <child>
+          <object class="GtkButton" id="button">
+            <property name="label">Create</property>
+            <signal name="clicked" handler="create_guide"/>
+            <layout>
+              <property name="column">2</property>
+              <property name="row">5</property>
+            </layout>
+          </object>
+        </child>
+      </object>
+    </child>
+  </template>
+</interface>

demos/constraint-editor/main.c

@@ -0,0 +1,28 @@
+/*
+ * Copyright © 2019 Red Hat, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Authors: Matthias Clasen <mclasen@redhat.com>
+ */
+
+#include "config.h"
+
+#include <constraint-editor-application.h>
+
+int
+main (int argc, char *argv[])
+{
+  return g_application_run (G_APPLICATION (constraint_editor_application_new ()), argc, argv);
+}

demos/constraint-editor/meson.build

@@ -0,0 +1,23 @@
+constraint_editor_sources = [
+  'main.c',
+  'constraint-editor-application.c',
+  'constraint-editor-window.c',
+  'constraint-view.c',
+  'constraint-editor.c',
+  'guide-editor.c',
+]
+
+constraint_editor_resources = gnome.compile_resources('constraint_editor_resources',
+  '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,
+)

demos/gtk-demo/application.c

@@ -33,12 +33,22 @@ static void create_window (GApplication *app, const char *contents);
 static void
 show_action_dialog (GSimpleAction *action)
 {
-  GtkAlertDialog *dialog;
+  const char *name;
+  GtkWidget *dialog;
 
-  dialog = gtk_alert_dialog_new ("You activated action: \"%s\"",
-                                 g_action_get_name (G_ACTION (action)));
-  gtk_alert_dialog_show (dialog, NULL);
-  g_object_unref (dialog);
+  name = g_action_get_name (G_ACTION (action));
+
+  dialog = gtk_message_dialog_new (NULL,
+                                   GTK_DIALOG_DESTROY_WITH_PARENT,
+                                   GTK_MESSAGE_INFO,
+                                   GTK_BUTTONS_CLOSE,
+                                   "You activated action: \"%s\"",
+                                    name);
+
+  g_signal_connect (dialog, "response",
+                    G_CALLBACK (gtk_window_destroy), NULL);
+
+  gtk_widget_show (dialog);
 }
 
 static void
@@ -57,7 +67,7 @@ show_action_infobar (GSimpleAction *action,
   text = g_strdup_printf ("You activated radio action: \"%s\".\n"
                           "Current value: %s", name, value);
   gtk_label_set_text (GTK_LABEL (window->message), text);
-  gtk_widget_set_visible (window->infobar, TRUE);
+  gtk_widget_show (window->infobar);
   g_free (text);
 }
 
@@ -80,38 +90,43 @@ activate_new (GSimpleAction *action,
 }
 
 static void
-open_response_cb (GObject *source,
-                  GAsyncResult *result,
-                  gpointer user_data)
+open_response_cb (GtkNativeDialog *dialog,
+                  int              response_id,
+                  gpointer         user_data)
 {
-  GtkFileDialog *dialog = GTK_FILE_DIALOG (source);
-  GApplication *app = G_APPLICATION (user_data);
+  GtkFileChooserNative *native = user_data;
+  GApplication *app = g_object_get_data (G_OBJECT (native), "app");
+  GtkWidget *message_dialog;
   GFile *file;
+  char *contents;
   GError *error = NULL;
 
-  file = gtk_file_dialog_open_finish (dialog, result, &error);
-  if (file)
+  if (response_id == GTK_RESPONSE_ACCEPT)
     {
-      char *contents;
+      file = gtk_file_chooser_get_file (GTK_FILE_CHOOSER (native));
 
       if (g_file_load_contents (file, NULL, &contents, NULL, NULL, &error))
         {
           create_window (app, contents);
           g_free (contents);
         }
+      else
+        {
+          message_dialog = gtk_message_dialog_new (NULL,
+                                                   GTK_DIALOG_DESTROY_WITH_PARENT,
+                                                   GTK_MESSAGE_ERROR,
+                                                   GTK_BUTTONS_CLOSE,
+                                                   "Error loading file: \"%s\"",
+                                                   error->message);
+          g_signal_connect (message_dialog, "response",
+                            G_CALLBACK (gtk_window_destroy), NULL);
+          gtk_widget_show (message_dialog);
+          g_error_free (error);
+        }
     }
 
-  if (error)
-    {
-      GtkAlertDialog *alert;
-
-      alert = gtk_alert_dialog_new ("Error loading file: \"%s\"", error->message);
-      gtk_alert_dialog_show (alert, NULL);
-      g_object_unref (alert);
-      g_error_free (error);
-    }
-
-  g_object_unref (app);
+  gtk_native_dialog_destroy (GTK_NATIVE_DIALOG (native));
+  g_object_unref (native);
 }
 
 
@@ -121,11 +136,21 @@ activate_open (GSimpleAction *action,
                gpointer       user_data)
 {
   GApplication *app = user_data;
-  GtkFileDialog *dialog;
+  GtkFileChooserNative *native;
 
-  dialog = gtk_file_dialog_new ();
-  gtk_file_dialog_open (dialog, NULL, NULL, open_response_cb, g_object_ref (app));
-  g_object_unref (dialog);
+  native = gtk_file_chooser_native_new ("Open File",
+                                        NULL,
+                                        GTK_FILE_CHOOSER_ACTION_OPEN,
+                                        "_Open",
+                                        "_Cancel");
+
+  g_object_set_data_full (G_OBJECT (native), "app", g_object_ref (app), g_object_unref);
+  g_signal_connect (native,
+                    "response",
+                    G_CALLBACK (open_response_cb),
+                    native);
+
+  gtk_native_dialog_show (GTK_NATIVE_DIALOG (native));
 }
 
 static void
@@ -214,41 +239,6 @@ activate_quit (GSimpleAction *action,
     }
 }
 
-static void
-delete_messages (gpointer data)
-{
-  g_list_free_full ((GList *)data, g_free);
-}
-
-static void
-pop_message (GtkWidget *status)
-{
-  GList *messages = (GList *) g_object_steal_data (G_OBJECT (status), "messages");
-
-  if (messages)
-    {
-      char *message = messages->data;
-      messages = g_list_remove (messages, message);
-
-      g_object_set_data_full (G_OBJECT (status), "messages",
-                              messages, delete_messages);
-
-      gtk_label_set_label (GTK_LABEL (status), message);
-    }
-}
-
-static void
-push_message (GtkWidget  *status,
-              const char *message)
-{
-  GList *messages = (GList *) g_object_steal_data (G_OBJECT (status), "messages");
-
-  gtk_label_set_label (GTK_LABEL (status), message);
-  messages = g_list_prepend (messages, g_strdup (message));
-  g_object_set_data_full (G_OBJECT (status), "messages",
-                          messages, delete_messages);
-}
-
 static void
 update_statusbar (GtkTextBuffer         *buffer,
                   DemoApplicationWindow *window)
@@ -259,7 +249,7 @@ update_statusbar (GtkTextBuffer         *buffer,
   GtkTextIter iter;
 
   /* clear any previous message, underflow is allowed */
-  pop_message (window->status);
+  gtk_statusbar_pop (GTK_STATUSBAR (window->status), 0);
 
   count = gtk_text_buffer_get_char_count (buffer);
 
@@ -273,7 +263,7 @@ update_statusbar (GtkTextBuffer         *buffer,
   msg = g_strdup_printf ("Cursor at row %d column %d - %d chars in document",
                          row, col, count);
 
-  push_message (window->status, msg);
+  gtk_statusbar_push (GTK_STATUSBAR (window->status), 0, msg);
 
   g_free (msg);
 }
@@ -330,7 +320,7 @@ static GActionEntry win_entries[] = {
 static void
 clicked_cb (GtkWidget *widget, DemoApplicationWindow *window)
 {
-  gtk_widget_set_visible (window->infobar, FALSE);
+  gtk_widget_hide (window->infobar);
 }
 
 static void
@@ -514,8 +504,6 @@ demo_application_window_dispose (GObject *object)
 
   demo_application_window_store_state (window);
 
-  gtk_widget_dispose_template (GTK_WIDGET (window), demo_application_window_get_type ());
-
   G_OBJECT_CLASS (demo_application_window_parent_class)->dispose (object);
 }
 

demos/gtk-demo/application.ui

@@ -76,13 +76,8 @@
           </object>
         </child>
         <child>
-          <object class="GtkLabel" id="status">
+          <object class="GtkStatusbar" id="status">
             <property name="hexpand">1</property>
-            <property name="xalign">0</property>
-            <property name="margin-start">2</property>
-            <property name="margin-end">2</property>
-            <property name="margin-top">2</property>
-            <property name="margin-bottom">2</property>
             <layout>
               <property name="column">0</property>
               <property name="row">3</property>

demos/gtk-demo/assistant.c

@@ -7,8 +7,6 @@
 
 #include <gtk/gtk.h>
 
-G_GNUC_BEGIN_IGNORE_DEPRECATIONS
-
 static GtkWidget *progress_bar = NULL;
 
 static gboolean
@@ -100,9 +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);
@@ -142,6 +137,7 @@ create_page3 (GtkWidget *assistant)
 
   label = gtk_label_new ("This is a confirmation page, press 'Apply' to apply changes");
 
+  gtk_widget_show (label);
   gtk_assistant_append_page (GTK_ASSISTANT (assistant), label);
   gtk_assistant_set_page_type (GTK_ASSISTANT (assistant), label, GTK_ASSISTANT_PAGE_CONFIRM);
   gtk_assistant_set_page_complete (GTK_ASSISTANT (assistant), label, TRUE);
@@ -158,14 +154,11 @@ create_page4 (GtkWidget *assistant)
   gtk_widget_set_margin_start (progress_bar, 40);
   gtk_widget_set_margin_end (progress_bar, 40);
 
+  gtk_widget_show (progress_bar);
   gtk_assistant_append_page (GTK_ASSISTANT (assistant), progress_bar);
   gtk_assistant_set_page_type (GTK_ASSISTANT (assistant), progress_bar, GTK_ASSISTANT_PAGE_PROGRESS);
   gtk_assistant_set_page_title (GTK_ASSISTANT (assistant), progress_bar, "Applying changes");
 
-  gtk_accessible_update_property (GTK_ACCESSIBLE (progress_bar),
-                                  GTK_ACCESSIBLE_PROPERTY_LABEL, "Applying changes",
-                                  -1);
-
   /* This prevents the assistant window from being
    * closed while we're "busy" applying changes.
    */
@@ -203,7 +196,7 @@ do_assistant (GtkWidget *do_widget)
     }
 
   if (!gtk_widget_get_visible (assistant))
-    gtk_widget_set_visible (assistant, TRUE);
+    gtk_widget_show (assistant);
   else
     gtk_window_destroy (GTK_WINDOW (assistant));
 

demos/gtk-demo/background.glsl

@@ -0,0 +1,26 @@
+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;
+}

demos/gtk-demo/bluroverlay.c

@@ -116,8 +116,7 @@ effective_align (GtkAlign         align,
       return direction == GTK_TEXT_DIR_RTL ? GTK_ALIGN_START : GTK_ALIGN_END;
     case GTK_ALIGN_FILL:
     case GTK_ALIGN_CENTER:
-    case GTK_ALIGN_BASELINE_FILL:
-    case GTK_ALIGN_BASELINE_CENTER:
+    case GTK_ALIGN_BASELINE:
     default:
       return align;
     }
@@ -259,8 +258,7 @@ blur_overlay_get_child_position (BlurOverlay    *overlay,
     case GTK_ALIGN_END:
       alloc->x += width - alloc->width;
       break;
-    case GTK_ALIGN_BASELINE_FILL:
-    case GTK_ALIGN_BASELINE_CENTER:
+    case GTK_ALIGN_BASELINE:
     default:
       g_assert_not_reached ();
       break;
@@ -283,8 +281,7 @@ blur_overlay_get_child_position (BlurOverlay    *overlay,
     case GTK_ALIGN_END:
       alloc->y += height - alloc->height;
       break;
-    case GTK_ALIGN_BASELINE_FILL:
-    case GTK_ALIGN_BASELINE_CENTER:
+    case GTK_ALIGN_BASELINE:
     default:
       g_assert_not_reached ();
       break;
@@ -300,13 +297,12 @@ blur_overlay_snapshot (GtkWidget   *widget,
   GtkWidget *main_widget;
   GskRenderNode *main_widget_node = NULL;
   GtkWidget *child;
-  int width, height;
+  GtkAllocation main_alloc;
   cairo_region_t *clip = NULL;
   int i;
 
   main_widget = BLUR_OVERLAY (widget)->main_widget;
-  width = gtk_widget_get_width (widget);
-  height = gtk_widget_get_height (widget);
+  gtk_widget_get_allocation (widget, &main_alloc);
 
   for (child = gtk_widget_get_first_child (widget);
        child != NULL;
@@ -319,7 +315,7 @@ blur_overlay_snapshot (GtkWidget   *widget,
 
       if (blur > 0)
         {
-          cairo_rectangle_int_t rect;
+          GtkAllocation alloc;
           graphene_rect_t bounds;
 
           if (main_widget_node == NULL)
@@ -331,8 +327,8 @@ blur_overlay_snapshot (GtkWidget   *widget,
               main_widget_node = gtk_snapshot_free_to_node (child_snapshot);
             }
 
-          if (!gtk_widget_compute_bounds (child, gtk_widget_get_parent (child), &bounds))
-            graphene_rect_init (&bounds, 0, 0, 0, 0);
+          gtk_widget_get_allocation (child, &alloc);
+          graphene_rect_init (&bounds, alloc.x, alloc.y, alloc.width, alloc.height);
           gtk_snapshot_push_blur (snapshot, blur);
           gtk_snapshot_push_clip (snapshot, &bounds);
           gtk_snapshot_append_node (snapshot, main_widget_node);
@@ -341,17 +337,13 @@ blur_overlay_snapshot (GtkWidget   *widget,
 
           if (clip == NULL)
             {
+              cairo_rectangle_int_t rect;
               rect.x = rect.y = 0;
-              rect.width = width;
-              rect.height = height;
+              rect.width = main_alloc.width;
+              rect.height = main_alloc.height;
               clip = cairo_region_create_rectangle (&rect);
             }
-
-          rect.x = floor (bounds.origin.x);
-          rect.y = floor (bounds.origin.y);
-          rect.width = ceil (bounds.origin.x + bounds.size.width - rect.x);
-          rect.height = ceil (bounds.origin.y + bounds.size.height - rect.y);
-          cairo_region_subtract_rectangle (clip, &rect);
+          cairo_region_subtract_rectangle (clip, (cairo_rectangle_int_t *)&alloc);
         }
     }
 

demos/gtk-demo/bluroverlay.h

@@ -18,7 +18,8 @@
  * License along with this library. If not, see <http://www.gnu.org/licenses/>.
  */
 
-#pragma once
+#ifndef __BLUR_OVERLAY_H__
+#define __BLUR_OVERLAY_H__
 
 #include <gtk/gtk.h>
 
@@ -50,12 +51,18 @@ struct _BlurOverlayClass
                                   GtkAllocation *allocation);
 };
 
+GDK_AVAILABLE_IN_ALL
 GType      blur_overlay_get_type    (void) G_GNUC_CONST;
+GDK_AVAILABLE_IN_ALL
 GtkWidget *blur_overlay_new         (void);
+GDK_AVAILABLE_IN_ALL
 void       blur_overlay_add_overlay (BlurOverlay *overlay,
                                      GtkWidget   *widget,
                                      double       blur);
+GDK_AVAILABLE_IN_ALL
 void       blur_overlay_set_child   (BlurOverlay *overlay,
                                      GtkWidget   *widget);
 
 G_END_DECLS
+
+#endif /* __BLUR_OVERLAY_H__ */

demos/gtk-demo/builder.c

@@ -1,5 +1,5 @@
 /* Builder
- * #Keywords: GMenu, GtkPopoverMenuBar, GtkBuilder, GtkShortcutController, toolbar
+ * #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.
@@ -37,30 +37,22 @@ remove_timeout (gpointer data)
   g_source_remove (id);
 }
 
-static int
-pop_message (gpointer data)
+static gboolean
+pop_status (gpointer data)
 {
-  GtkWidget *status = data;
-
-  gtk_label_set_label (GTK_LABEL (status), "");
-  g_object_set_data (G_OBJECT (status), "timeout", GUINT_TO_POINTER (0));
-
+  gtk_statusbar_pop (GTK_STATUSBAR (data), 0);
+  g_object_set_data (G_OBJECT (data), "timeout", NULL);
   return G_SOURCE_REMOVE;
 }
 
 static void
-status_message (GtkWidget  *status,
-                const char *text)
+status_message (GtkStatusbar *status,
+                const char   *text)
 {
   guint id;
 
-  id = GPOINTER_TO_UINT (g_object_get_data (G_OBJECT (status), "timeout"));
-  if (id)
-    g_source_remove (id);
-
-  gtk_label_set_text (GTK_LABEL (status), text);
-
-  id = g_timeout_add (5000, pop_message, status);
+  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);
 }
@@ -73,7 +65,7 @@ help_activate (GSimpleAction *action,
   GtkWidget *status;
 
   status = GTK_WIDGET (g_object_get_data (G_OBJECT (user_data), "status"));
-  status_message (status, "Help not available");
+  status_message (GTK_STATUSBAR (status), "Help not available");
 }
 
 static void
@@ -86,7 +78,7 @@ not_implemented (GSimpleAction *action,
 
   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 (status, text);
+  status_message (GTK_STATUSBAR (status), text);
   g_free (text);
 }
 
@@ -176,7 +168,7 @@ do_builder (GtkWidget *do_widget)
     }
 
   if (!gtk_widget_get_visible (window))
-    gtk_widget_set_visible (window, TRUE);
+    gtk_widget_show (window);
   else
     gtk_window_destroy (GTK_WINDOW (window));
 

demos/gtk-demo/clipboard.c

@@ -1,11 +1,12 @@
 /* Clipboard
- * #Keywords: drag-and-drop, dnd
  *
  * 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>
@@ -13,103 +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)
-    {
-      const GdkRGBA *color;
-
-      color = gtk_color_dialog_button_get_rgba (GTK_COLOR_DIALOG_BUTTON (visible_child));
-      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
@@ -117,295 +37,153 @@ 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 (GObject *source,
-                       GAsyncResult *result,
-                       gpointer user_data)
-{
-  GtkFileDialog *dialog = GTK_FILE_DIALOG (source);
-  GtkButton *button = GTK_BUTTON (user_data);
-  GFile *file;
-
-  file = gtk_file_dialog_open_finish (dialog, result, NULL);
-  if (file)
-    {
-      file_button_set_file (button, file);
-      g_object_unref (file);
-
-      update_copy_button_sensitivity (gtk_widget_get_ancestor (GTK_WIDGET (button), GTK_TYPE_STACK));
-    }
-}
-
-static void
-open_file_cb (GtkWidget *button)
-{
-  GtkFileDialog *dialog;
-
-  dialog = gtk_file_dialog_new ();
-
-  gtk_file_dialog_open (dialog,
-                        GTK_WINDOW (gtk_widget_get_ancestor (button, GTK_TYPE_WINDOW)),
-                        NULL,
-                        file_chooser_response, button);
-
-  g_object_unref (dialog);
-}
-
-static void
-folder_chooser_response (GObject *source,
-                         GAsyncResult *result,
-                         gpointer user_data)
-{
-  GtkFileDialog *dialog = GTK_FILE_DIALOG (source);
-  GtkButton *button = GTK_BUTTON (user_data);
-  GFile *file;
-
-  file = gtk_file_dialog_select_folder_finish (dialog, result, NULL);
-  if (file)
-    {
-      file_button_set_file (button, file);
-      g_object_unref (file);
-
-      update_copy_button_sensitivity (gtk_widget_get_ancestor (GTK_WIDGET (button), GTK_TYPE_STACK));
-    }
-}
-
-static void
-open_folder_cb (GtkWidget *button)
-{
-  GtkFileDialog *dialog;
-
-  dialog = gtk_file_dialog_new ();
-
-  gtk_file_dialog_select_folder (dialog,
-                                 GTK_WINDOW (gtk_widget_get_ancestor (button, GTK_TYPE_WINDOW)),
-                                 NULL,
-                                 folder_chooser_response, button);
-
-  g_object_unref (dialog);
-}
-
-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 (scope, copy_button_clicked);
-      gtk_builder_cscope_add_callback (scope, paste_button_clicked);
-      gtk_builder_cscope_add_callback (scope, source_changed_cb);
-      gtk_builder_cscope_add_callback (scope, text_changed_cb);
-      gtk_builder_cscope_add_callback (scope, open_file_cb);
-      gtk_builder_cscope_add_callback (scope, open_folder_cb);
-      gtk_builder_cscope_add_callback (scope, on_drop);
-      gtk_builder_cscope_add_callback (scope, drag_prepare);
-      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))
-    gtk_widget_set_visible (window, TRUE);
+    gtk_widget_show (window);
   else
     gtk_window_destroy (GTK_WINDOW (window));
 

demos/gtk-demo/clipboard.ui

@@ -1,362 +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>
-    <accessibility>
-      <relation name="described-by">label</relation>
-    </accessibility>
-    <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" id="label">
-            <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">
-                <accessibility>
-                  <property name="label">Source Type</property>
-                </accessibility>
-                <property name="valign">center</property>
-                <property name="model">
-                  <object class="GtkStringList">
-                    <items>
-                      <item>Text</item>
-                      <item>Color</item>
-                      <item>Image</item>
-                      <item>File</item>
-                      <item>Folder</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">
-                        <accessibility>
-                          <property name="label">Text Drag Source</property>
-                        </accessibility>
-                        <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="GtkColorDialogButton" id="source_color">
-                        <accessibility>
-                          <property name="label">Color Drag Source</property>
-                        </accessibility>
-                        <property name="dialog">
-                          <object class="GtkColorDialog">
-                          </object>
-                        </property>
-                        <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">
-                            <accessibility>
-                              <property name="label">Photo Drag Source</property>
-                            </accessibility>
-                            <property name="active">1</property>
-                            <child>
-                            </child>
-                            <child>
-                              <object class="GtkImage">
-                                <accessibility>
-                                  <property name="label">Portland Rose Photo</property>
-                                </accessibility>
-                                <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">
-                            <accessibility>
-                              <property name="label">Icon Drag Source</property>
-                            </accessibility>
-                            <property name="group">image_rose</property>
-                            <child>
-                              <object class="GtkDragSource">
-                                <signal name="prepare" handler="drag_prepare"/>
-                              </object>
-                            </child>
-                            <child>
-                              <object class="GtkImage">
-                                <accessibility>
-                                  <property name="label">Floppy Buddy Icon</property>
-                                </accessibility>
-                                <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">
-                            <accessibility>
-                              <property name="label">SVG Drag Source</property>
-                            </accessibility>
-                            <property name="group">image_floppy</property>
-                            <child>
-                              <object class="GtkDragSource">
-                                <signal name="prepare" handler="drag_prepare"/>
-                              </object>
-                            </child>
-                            <child>
-                              <object class="GtkImage">
-                                <accessibility>
-                                  <property name="label">gtk-demo logo</property>
-                                </accessibility>
-                                <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">
-                        <accessibility>
-                          <property name="label">File Drag Source</property>
-                        </accessibility>
-                        <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>
-                <child>
-                  <object class="GtkStackPage">
-                    <property name="name">Folder</property>
-                    <property name="child">
-                      <object class="GtkButton" id="source_folder">
-                        <accessibility>
-                          <property name="label">Folder Drag Source</property>
-                        </accessibility>
-                        <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_folder_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" id="paste_label">
-                <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">
-                        <accessibility>
-                          <relation name="labelled-by">paste_label</relation>
-                        </accessibility>
-                        <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">
-                        <accessibility>
-                          <relation name="labelled-by">paste_label</relation>
-                        </accessibility>
-                        <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">
-                            <accessibility>
-                              <relation name="labelled-by">paste_label</relation>
-                            </accessibility>
-                            <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">
-                        <accessibility>
-                          <relation name="labelled-by">paste_label</relation>
-                        </accessibility>
-                        <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>

demos/gtk-demo/cogs2.glsl

@@ -0,0 +1,226 @@
+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);
+}

demos/gtk-demo/combobox.c

@@ -11,8 +11,6 @@
 #include <glib/gi18n.h>
 #include <gtk/gtk.h>
 
-G_GNUC_BEGIN_IGNORE_DEPRECATIONS
-
 enum
 {
   ICON_NAME_COL,
@@ -449,7 +447,7 @@ do_combobox (GtkWidget *do_widget)
   }
 
   if (!gtk_widget_get_visible (window))
-    gtk_widget_set_visible (window, TRUE);
+    gtk_widget_show (window);
   else
     gtk_window_destroy (GTK_WINDOW (window));
 

demos/gtk-demo/constraints.c

@@ -277,7 +277,7 @@ do_constraints (GtkWidget *do_widget)
    }
 
  if (!gtk_widget_get_visible (window))
-   gtk_widget_set_visible (window, TRUE);
+   gtk_widget_show (window);
  else
    gtk_window_destroy (GTK_WINDOW (window));
 

demos/gtk-demo/constraints_builder.c

@@ -66,7 +66,7 @@ do_constraints_builder (GtkWidget *do_widget)
    }
 
  if (!gtk_widget_get_visible (window))
-   gtk_widget_set_visible (window, TRUE);
+   gtk_widget_show (window);
  else
    gtk_window_destroy (GTK_WINDOW (window));
 

demos/gtk-demo/constraints_interactive.c

@@ -229,7 +229,7 @@ do_constraints_interactive (GtkWidget *do_widget)
    }
 
  if (!gtk_widget_get_visible (window))
-   gtk_widget_set_visible (window, TRUE);
+   gtk_widget_show (window);
  else
    gtk_window_destroy (GTK_WINDOW (window));
 

demos/gtk-demo/constraints_vfl.c

@@ -152,7 +152,7 @@ do_constraints_vfl (GtkWidget *do_widget)
    }
 
  if (!gtk_widget_get_visible (window))
-   gtk_widget_set_visible (window, TRUE);
+   gtk_widget_show (window);
  else
    gtk_window_destroy (GTK_WINDOW (window));
 

demos/gtk-demo/crosswarp.glsl

@@ -0,0 +1,27 @@
+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);
+}

demos/gtk-demo/css_accordion.c

@@ -1,16 +1,20 @@
 /* Theming/CSS Accordion
  *
  * A simple accordion demo written using CSS transitions and multiple backgrounds
- *
  */
 
 #include <gtk/gtk.h>
 
 static void
-destroy_provider (GtkWidget        *window,
-                  GtkStyleProvider *provider)
+apply_css (GtkWidget *widget, GtkStyleProvider *provider)
 {
-  gtk_style_context_remove_provider_for_display (gtk_widget_get_display (window), provider);
+  GtkWidget *child;
+
+  gtk_style_context_add_provider (gtk_widget_get_style_context (widget), provider, G_MAXUINT);
+  for (child = gtk_widget_get_first_child (widget);
+       child != NULL;
+       child = gtk_widget_get_next_sibling (child))
+    apply_css (child, provider);
 }
 
 GtkWidget *
@@ -20,8 +24,8 @@ do_css_accordion (GtkWidget *do_widget)
 
   if (!window)
     {
-      GtkWidget *container, *styled_box, *child;
-      GtkCssProvider *provider;
+      GtkWidget *container, *child;
+      GtkStyleProvider *provider;
 
       window = gtk_window_new ();
       gtk_window_set_title (GTK_WINDOW (window), "CSS Accordion");
@@ -29,13 +33,10 @@ do_css_accordion (GtkWidget *do_widget)
       gtk_window_set_default_size (GTK_WINDOW (window), 600, 300);
       g_object_add_weak_pointer (G_OBJECT (window), (gpointer *)&window);
 
-      styled_box = gtk_frame_new (NULL);
-      gtk_window_set_child (GTK_WINDOW (window), styled_box);
-      gtk_widget_add_css_class (styled_box, "accordion");
       container = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 0);
       gtk_widget_set_halign (container, GTK_ALIGN_CENTER);
       gtk_widget_set_valign (container, GTK_ALIGN_CENTER);
-      gtk_frame_set_child (GTK_FRAME (styled_box), container);
+      gtk_window_set_child (GTK_WINDOW (window), container);
 
       child = gtk_button_new_with_label ("This");
       gtk_box_append (GTK_BOX (container), child);
@@ -55,20 +56,14 @@ do_css_accordion (GtkWidget *do_widget)
       child = gtk_button_new_with_label (":-)");
       gtk_box_append (GTK_BOX (container), child);
 
-      provider = gtk_css_provider_new ();
-      gtk_css_provider_load_from_resource (provider, "/css_accordion/css_accordion.css");
+      provider = GTK_STYLE_PROVIDER (gtk_css_provider_new ());
+      gtk_css_provider_load_from_resource (GTK_CSS_PROVIDER (provider), "/css_accordion/css_accordion.css");
 
-      gtk_style_context_add_provider_for_display (gtk_widget_get_display (window),
-                                                  GTK_STYLE_PROVIDER (provider),
-                                                  GTK_STYLE_PROVIDER_PRIORITY_APPLICATION);
-
-      g_signal_connect (window, "destroy",
-                        G_CALLBACK (destroy_provider), provider);
-      g_object_unref (provider);
+      apply_css (window, provider);
     }
 
   if (!gtk_widget_get_visible (window))
-    gtk_widget_set_visible (window, TRUE);
+    gtk_widget_show (window);
   else
     gtk_window_destroy (GTK_WINDOW (window));
 

demos/gtk-demo/css_accordion.css

@@ -1,13 +1,13 @@
-.accordion, .accordion * {
-    all: unset;
+@import url("resource://css_accordion/reset.css");
 
+* {
     transition-property: color, background-color, border-color, background-image, padding, border-width;
     transition-duration: 1s;
 
     font: 20px Cantarell;
 }
 
-.accordion {
+window {
     background: linear-gradient(153deg, #151515, #151515 5px, transparent 5px) 0 0,
                 linear-gradient(333deg, #151515, #151515 5px, transparent 5px) 10px 5px,
                 linear-gradient(153deg, #222, #222 5px, transparent 5px) 0 5px,
@@ -18,7 +18,7 @@
     background-size: 20px 20px;
 }
 
-.accordion button {
+button {
     color: black;
     background-color: #bbb;
     border-style: solid;
@@ -28,25 +28,25 @@
     padding: 12px 4px;
 }
 
-.accordion button:first-child {
+button:first-child {
     border-radius: 5px 0 0 5px;
 }
 
-.accordion button:last-child {
+button:last-child {
     border-radius: 0 5px 5px 0;
     border-width: 2px;
 }
 
-.accordion button:hover {
+button:hover {
     padding: 12px 48px;
     background-color: #4870bc;
 }
 
-.accordion button *:hover {
+button *:hover {
     color: white;
 }
 
-.accordion button:hover:active,
-.accordion button:active {
+button:hover:active,
+button:active {
     background-color: #993401;
 }

demos/gtk-demo/css_basics.c

@@ -47,23 +47,20 @@ css_text_changed (GtkTextBuffer  *buffer,
   gtk_text_buffer_remove_all_tags (buffer, &start, &end);
 
   text = gtk_text_buffer_get_text (buffer, &start, &end, FALSE);
-  gtk_css_provider_load_from_string (provider, text);
+  gtk_css_provider_load_from_data (provider, text, -1);
   g_free (text);
 }
 
-static void
-clear_provider (gpointer data)
-{
-  GtkStyleProvider *provider = data;
-
-  gtk_style_context_remove_provider_for_display (gdk_display_get_default (), provider);
-}
-
 static void
 apply_css (GtkWidget *widget, GtkStyleProvider *provider)
 {
-  gtk_style_context_add_provider_for_display (gdk_display_get_default (), provider, G_MAXUINT);
-  g_object_set_data_full (G_OBJECT (widget), "provider", provider, clear_provider);
+  GtkWidget *child;
+
+  gtk_style_context_add_provider (gtk_widget_get_style_context (widget), provider, G_MAXUINT);
+  for (child = gtk_widget_get_first_child (widget);
+       child != NULL;
+       child = gtk_widget_get_next_sibling (child))
+    apply_css (child, provider);
 }
 
 GtkWidget *
@@ -82,7 +79,6 @@ do_css_basics (GtkWidget *do_widget)
       gtk_window_set_title (GTK_WINDOW (window), "CSS Basics");
       gtk_window_set_transient_for (GTK_WINDOW (window), GTK_WINDOW (do_widget));
       gtk_window_set_default_size (GTK_WINDOW (window), 400, 300);
-      gtk_widget_add_css_class (window, "demo");
       g_object_add_weak_pointer (G_OBJECT (window), (gpointer *)&window);
 
       text = gtk_text_buffer_new (NULL);
@@ -117,7 +113,7 @@ do_css_basics (GtkWidget *do_widget)
     }
 
   if (!gtk_widget_get_visible (window))
-    gtk_widget_set_visible (window, TRUE);
+    gtk_widget_show (window);
   else
     gtk_window_destroy (GTK_WINDOW (window));
 

demos/gtk-demo/css_basics.css

@@ -4,24 +4,23 @@
  * anymore. :)
  */
 
-/* This resets all properties to their defaults values
- * and overrides all user settings and the theme in use
- */
-@import url("resource://css_shadows/reset.css");
+/* This CSS resets all properties to their defaults values
+ *    and overrides all user settings and the theme in use */
+@import url("resource://css_basics/reset.css");
 
 /* Set a very futuristic style by default */
-.demo * {
+* {
   color: green;
   font-family: Monospace;
   border: 1px solid;
 }
 
-window.demo {
+window {
   background-color: white;
 }
 
 /* Make sure selections are visible */
-.demo selection {
+selection {
   background-color: darkGreen;
   color: black;
 }

demos/gtk-demo/css_blendmodes.c

@@ -50,7 +50,7 @@ update_css_for_blend_mode (GtkCssProvider *provider,
                          blend_mode,
                          blend_mode);
 
-  gtk_css_provider_load_from_string (provider, css);
+  gtk_css_provider_load_from_data (provider, css, -1);
 
   g_bytes_unref (bytes);
   g_free (css);
@@ -139,7 +139,7 @@ do_css_blendmodes (GtkWidget *do_widget)
     }
 
   if (!gtk_widget_get_visible (window))
-    gtk_widget_set_visible (window, TRUE);
+    gtk_widget_show (window);
   else
     gtk_window_destroy (GTK_WINDOW (window));
 

demos/gtk-demo/css_multiplebgs.c

@@ -48,23 +48,33 @@ css_text_changed (GtkTextBuffer  *buffer,
   gtk_text_buffer_remove_all_tags (buffer, &start, &end);
 
   text = gtk_text_buffer_get_text (buffer, &start, &end, FALSE);
-  gtk_css_provider_load_from_string (provider, text);
+  gtk_css_provider_load_from_data (provider, text, -1);
   g_free (text);
 }
 
 static void
-clear_provider (gpointer data)
+drawing_area_draw (GtkDrawingArea *da,
+                   cairo_t        *cr,
+                   int             width,
+                   int             height,
+                   gpointer        data)
 {
-  GtkStyleProvider *provider = data;
+  GtkStyleContext *context = gtk_widget_get_style_context (GTK_WIDGET (da));
 
-  gtk_style_context_remove_provider_for_display (gdk_display_get_default (), provider);
+  gtk_render_background (context, cr, 0, 0, width, height);
+  gtk_render_frame (context, cr, 0, 0, width, height);
 }
 
 static void
 apply_css (GtkWidget *widget, GtkStyleProvider *provider)
 {
-  gtk_style_context_add_provider_for_display (gdk_display_get_default (), provider, G_MAXUINT);
-  g_object_set_data_full (G_OBJECT (widget), "provider", provider, clear_provider);
+  GtkWidget *child;
+
+  gtk_style_context_add_provider (gtk_widget_get_style_context (widget), provider, G_MAXUINT);
+  for (child = gtk_widget_get_first_child (widget);
+       child != NULL;
+       child = gtk_widget_get_next_sibling (child))
+    apply_css (child, provider);
 }
 
 GtkWidget *
@@ -83,17 +93,16 @@ do_css_multiplebgs (GtkWidget *do_widget)
       gtk_window_set_title (GTK_WINDOW (window), "Multiple Backgrounds");
       gtk_window_set_transient_for (GTK_WINDOW (window), GTK_WINDOW (do_widget));
       gtk_window_set_default_size (GTK_WINDOW (window), 400, 300);
-      gtk_widget_add_css_class (window, "demo");
       g_object_add_weak_pointer (G_OBJECT (window), (gpointer *)&window);
 
       overlay = gtk_overlay_new ();
       gtk_window_set_child (GTK_WINDOW (window), overlay);
 
       child = gtk_drawing_area_new ();
-      /* Don't set a draw_func, since we are only interested in CSS drawing,
-       * which happens automatically.
-       */
       gtk_widget_set_name (child, "canvas");
+      gtk_drawing_area_set_draw_func (GTK_DRAWING_AREA (child),
+                                      drawing_area_draw,
+                                      NULL, NULL);
       gtk_overlay_set_child (GTK_OVERLAY (overlay), child);
 
       child = gtk_button_new ();
@@ -144,7 +153,7 @@ do_css_multiplebgs (GtkWidget *do_widget)
     }
 
   if (!gtk_widget_get_visible (window))
-    gtk_widget_set_visible (window, TRUE);
+    gtk_widget_show (window);
   else
     gtk_window_destroy (GTK_WINDOW (window));
 

demos/gtk-demo/css_pixbufs.c

@@ -49,23 +49,20 @@ css_text_changed (GtkTextBuffer  *buffer,
   gtk_text_buffer_remove_all_tags (buffer, &start, &end);
 
   text = gtk_text_buffer_get_text (buffer, &start, &end, FALSE);
-  gtk_css_provider_load_from_string (provider, text);
+  gtk_css_provider_load_from_data (provider, text, -1);
   g_free (text);
 }
 
-static void
-clear_provider (gpointer data)
-{
-  GtkStyleProvider *provider = data;
-
-  gtk_style_context_remove_provider_for_display (gdk_display_get_default (), provider);
-}
-
 static void
 apply_css (GtkWidget *widget, GtkStyleProvider *provider)
 {
-  gtk_style_context_add_provider_for_display (gdk_display_get_default (), provider, G_MAXUINT);
-  g_object_set_data_full (G_OBJECT (widget), "provider", provider, clear_provider);
+  GtkWidget *child;
+
+  gtk_style_context_add_provider (gtk_widget_get_style_context (widget), provider, G_MAXUINT);
+  for (child = gtk_widget_get_first_child (widget);
+       child != NULL;
+       child = gtk_widget_get_next_sibling (child))
+    apply_css (child, provider);
 }
 
 GtkWidget *
@@ -84,7 +81,6 @@ do_css_pixbufs (GtkWidget *do_widget)
       gtk_window_set_title (GTK_WINDOW (window), "Animated Backgrounds");
       gtk_window_set_transient_for (GTK_WINDOW (window), GTK_WINDOW (do_widget));
       gtk_window_set_default_size (GTK_WINDOW (window), 400, 300);
-      gtk_widget_add_css_class (window, "demo");
       g_object_add_weak_pointer (G_OBJECT (window), (gpointer *)&window);
 
       paned = gtk_paned_new (GTK_ORIENTATION_VERTICAL);
@@ -126,7 +122,7 @@ do_css_pixbufs (GtkWidget *do_widget)
     }
 
   if (!gtk_widget_get_visible (window))
-    gtk_widget_set_visible (window, TRUE);
+    gtk_widget_show (window);
   else
     gtk_window_destroy (GTK_WINDOW (window));
 

demos/gtk-demo/css_pixbufs.css

@@ -50,7 +50,7 @@
     100% { background-size: 12px, 96px, 12px, 96px, 12px, 96px, 12px, 96px, auto; }
 }
 
-window.demo {
+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"),
@@ -66,11 +66,11 @@ window.demo {
 }
 
 /* Make the text editor has a nice style */
-window.demo .view, scrollbar, separator {
+.view, scrollbar, separator {
   color: black;
   background-color: rgba(255,255,255,0.5);
 }
 
-window.demo .view:selected {
+.view:selected {
   background-color: rgba(127,127,255,0.5);
 }

demos/gtk-demo/css_shadows.c

@@ -46,23 +46,20 @@ css_text_changed (GtkTextBuffer  *buffer,
   gtk_text_buffer_remove_all_tags (buffer, &start, &end);
 
   text = gtk_text_buffer_get_text (buffer, &start, &end, FALSE);
-  gtk_css_provider_load_from_string (provider, text);
+  gtk_css_provider_load_from_data (provider, text, -1);
   g_free (text);
 }
 
-static void
-clear_provider (gpointer data)
-{
-  GtkStyleProvider *provider = data;
-
-  gtk_style_context_remove_provider_for_display (gdk_display_get_default (), provider);
-}
-
 static void
 apply_css (GtkWidget *widget, GtkStyleProvider *provider)
 {
-  gtk_style_context_add_provider_for_display (gdk_display_get_default (), provider, G_MAXUINT);
-  g_object_set_data_full (G_OBJECT (widget), "provider", provider, clear_provider);
+  GtkWidget *child;
+
+  gtk_style_context_add_provider (gtk_widget_get_style_context (widget), provider, G_MAXUINT);
+  for (child = gtk_widget_get_first_child (widget);
+       child != NULL;
+       child = gtk_widget_get_next_sibling (child))
+    apply_css (child, provider);
 }
 
 static GtkWidget *
@@ -102,7 +99,6 @@ do_css_shadows (GtkWidget *do_widget)
       gtk_window_set_title (GTK_WINDOW (window), "Shadows");
       gtk_window_set_transient_for (GTK_WINDOW (window), GTK_WINDOW (do_widget));
       gtk_window_set_default_size (GTK_WINDOW (window), 400, 300);
-      gtk_widget_add_css_class (window, "demo");
       g_object_add_weak_pointer (G_OBJECT (window), (gpointer *)&window);
 
       paned = gtk_paned_new (GTK_ORIENTATION_VERTICAL);
@@ -144,7 +140,7 @@ do_css_shadows (GtkWidget *do_widget)
     }
 
   if (!gtk_widget_get_visible (window))
-    gtk_window_present (GTK_WINDOW (window));
+    gtk_widget_show (window);
   else
     gtk_window_destroy (GTK_WINDOW (window));
 

demos/gtk-demo/css_shadows.css

@@ -5,13 +5,12 @@
  */
 
 /* This CSS resets all properties to their defaults values
- * and overrides all user settings and the theme in use
- */
+ *    and overrides all user settings and the theme in use */
 @import url("resource://css_shadows/reset.css");
 @import url("resource://css_shadows/cssview.css");
 
 /* Get a nice background for the window */
-window.demo.background {
+.background {
   background-color: #4870bc;
   background-image: linear-gradient(to left, transparent, rgba(255,255,255,.07) 50%, transparent 50%),
                     linear-gradient(to left, transparent, rgba(255,255,255,.13) 50%, transparent 50%),
@@ -20,7 +19,7 @@ window.demo.background {
   background-size: 29px, 59px, 73px, 109px;
 }
 
-window.demo button {
+button {
   color: black;
   padding: 10px;
   border-radius: 5px;
@@ -28,15 +27,18 @@ window.demo button {
   border: 1px transparent solid;
 }
 
-window.demo button:hover {
+button:hover {
   text-shadow: 3px 3px 5px alpha(black, 0.75);
   -gtk-icon-shadow: 3px 3px 5px alpha(black, 0.75);
   box-shadow: 3px 3px 5px alpha(black, 0.5) inset;
   border: solid 1px alpha(black, 0.75);
 }
 
-window.demo button:active {
+button:active {
   padding: 11px 9px 9px 11px;
   text-shadow: 1px 1px 2.5px alpha(black, 0.6);
   -gtk-icon-shadow: 1px 1px 2.5px alpha(black, 0.6);
 }
+
+
+

demos/gtk-demo/cssview.css

@@ -1,21 +1,21 @@
 /* Make the text editor has a nice style */
-window.demo .view {
+.view {
   color: #2e3436;
   font-family: Monospace;
   background-color: alpha(white, 0.30);
 }
 
-window.demo .view:selected {
+.view:selected {
   color: white;
   background-color: #4a90d9;
 }
 
-window.demo scrollbar trough,
+scrollbar trough,
 .scrollbars-junction {
   background-color: alpha(white, 0.80);
 }
 
-window.demo scrollbar slider {
+scrollbar slider {
   border-width: 3px;
   border-style: solid;
   border-radius: 10px;
@@ -24,11 +24,11 @@ window.demo scrollbar slider {
   background-color: #999;
 }
 
-window.demo scrollbar slider:hover {
+scrollbar slider:hover {
   background-color: #555;
 }
 
-window.demo paned separator {
+paned separator {
   background-color: alpha(white, 0.80);
   background-image: linear-gradient(transparent, transparent 1px, #999 1px, #999 4px, transparent 4px);
   background-size: 40px auto;
@@ -36,6 +36,6 @@ window.demo paned separator {
   background-position: center;
 }
 
-window.demo paned separator:hover {
+paned separator:hover {
   background-image: linear-gradient(transparent, transparent 1px, #555 1px, #555 4px, transparent 4px);
 }

demos/gtk-demo/cursors.c

@@ -15,73 +15,28 @@ on_destroy (gpointer data)
   window = NULL;
 }
 
-static GdkTexture *
-cursor_callback (GdkCursor *cursor,
-                 int        cursor_size,
-                 double     scale,
-                 int       *width,
-                 int       *height,
-                 int       *hotspot_x,
-                 int       *hotspot_y,
-                 gpointer   data)
-{
-  GdkPixbuf *pixbuf;
-  GdkTexture *texture;
-  GError *error = NULL;
-  int scaled_size;
-
-  scaled_size = ceil (cursor_size * scale);
-
-  pixbuf = gdk_pixbuf_new_from_resource_at_scale ("/cursors/images/gtk-logo.svg",
-                                                  scaled_size, scaled_size,
-                                                  TRUE,
-                                                  &error);
-  if (!pixbuf)
-    {
-      g_print ("%s\n", error->message);
-      g_error_free (error);
-      return NULL;
-    }
-
-  texture = gdk_texture_new_for_pixbuf (pixbuf);
-
-  g_object_unref (pixbuf);
-
-  *width = cursor_size;
-  *height = cursor_size;
-  *hotspot_x = 18 * cursor_size / 32.0;
-  *hotspot_y = 2 * cursor_size / 32.0;
-
-  return texture;
-}
-
 GtkWidget *
 do_cursors (GtkWidget *do_widget)
 {
   if (!window)
     {
       GtkBuilder *builder;
-      GtkWidget *logo_callback;
-      GdkCursor *cursor;
 
       builder = gtk_builder_new_from_resource ("/cursors/cursors.ui");
       window = GTK_WIDGET (gtk_builder_get_object (builder, "window"));
-      g_object_add_weak_pointer (G_OBJECT (window), (gpointer *)&window);
       gtk_window_set_display (GTK_WINDOW (window),
                               gtk_widget_get_display (do_widget));
       g_signal_connect (window, "destroy",
                         G_CALLBACK (on_destroy), NULL);
-      logo_callback = GTK_WIDGET (gtk_builder_get_object (builder, "logo_callback"));
-      cursor = gdk_cursor_new_from_callback (cursor_callback, NULL, NULL, NULL);
-      gtk_widget_set_cursor (logo_callback, cursor);
-      g_object_unref (cursor);
       g_object_unref (builder);
     }
 
   if (!gtk_widget_get_visible (window))
-    gtk_widget_set_visible (window, TRUE);
+    gtk_widget_show (window);
   else
-    gtk_window_destroy (GTK_WINDOW (window));
+    {
+      gtk_window_destroy (GTK_WINDOW (window));
+    }
 
   return window;
 }