Add windowing channel support to Linux embedder #163180

robert-ancell · 2025-02-13T01:48:49Z

Implement flutter/windowing for the Linux embedder.

This moves the final part of the keyboard handling from FlView to the FlEngine and means keyboard should work correctly with multiple views.

robert-ancell · 2025-02-13T01:49:49Z

Builds on top of #162131, and the code will be unused until the platform side lands in #157515

robert-ancell · 2025-02-13T01:51:09Z

I expect this PR will require some detail before landing, and will need to be kept in sync with #157515. Posting it now because it works and seeking early review.

robert-ancell · 2025-02-13T02:37:29Z

Noting a future change I think we want. FlApplication creates the main window differently to FlWindowingHandler - I think the former should use the latter to align these. I haven't included this in this PR to reduce complexity.

engine/src/flutter/shell/platform/linux/fl_windowing_channel.cc

hbatagelo · 2025-02-13T12:28:21Z

engine/src/flutter/shell/platform/linux/fl_engine.cc

  fl_settings_handler_start(self->settings_handler, settings);

  self->platform_handler = fl_platform_handler_new(self->binary_messenger);
+  self->windowing_handler = fl_windowing_handler_new(self);


Maybe we should make the windowing channel available only when the --enable-multi-window=true option is specified, like we do on Windows?

I had a look at this but since we don't currently handle options like this it's not easy to add. Will look again later.

hbatagelo

LGTM

robert-ancell · 2025-02-25T21:20:05Z

clang_tidy seems to be confused by the g_autofree usage and thinks this is leaking memory. Not sure if there was a recent change or this is going to need to be worked around for all code in the Linux embedder? I've ignored these with:

// NOLINTNEXTLINE(clang-analyzer-unix.Malloc)

This reverts commit 87c1775.

…ter#163180)

Roll Flutter from 1659206 to 2e570ca (75 revisions) flutter/flutter@1659206...2e570ca 2025-02-27 engine-flutter-autoroll@skia.org Roll Skia from ac08df9c8d82 to e5a33102401c (1 revision) (flutter/flutter#164288) 2025-02-27 engine-flutter-autoroll@skia.org Roll Skia from 6018dff0233a to ac08df9c8d82 (1 revision) (flutter/flutter#164275) 2025-02-27 engine-flutter-autoroll@skia.org Roll Dart SDK from 4a218fbffc80 to fcda71ce147b (1 revision) (flutter/flutter#164276) 2025-02-27 engine-flutter-autoroll@skia.org Roll Skia from 0f2e106c9abc to 6018dff0233a (1 revision) (flutter/flutter#164266) 2025-02-27 robert.ancell@canonical.com Add windowing channel support to Linux embedder (flutter/flutter#163180) 2025-02-27 engine-flutter-autoroll@skia.org Roll Dart SDK from 7fa5901bd8a3 to 4a218fbffc80 (2 revisions) (flutter/flutter#164260) 2025-02-27 engine-flutter-autoroll@skia.org Roll Skia from fdd97386193e to 0f2e106c9abc (4 revisions) (flutter/flutter#164259) 2025-02-27 codefu@google.com Run more builds faster (flutter/flutter#164125) 2025-02-27 737941+loic-sharma@users.noreply.github.com Increase customer test timeout to 60 minutes (flutter/flutter#164239) 2025-02-27 jason-simmons@users.noreply.github.com Reland "Add a buildtools directory and move third_party/ninja to the project root in order to match the expectations of depot_tools" (flutter/flutter#164240) 2025-02-27 liama@google.com Use the Dart isolate ownership API on the root isolate (flutter/flutter#163703) 2025-02-26 engine-flutter-autoroll@skia.org Roll Fuchsia Linux SDK from g-2SJtblPjjaH7Egy... to 1elkOxihZuTEiTXzY... (flutter/flutter#164243) 2025-02-26 robert.ancell@canonical.com Show Linux driver information in flutter doctor (flutter/flutter#163980) 2025-02-26 34871572+gmackall@users.noreply.github.com Implement opacity `FlutterMutator` for hcpp (flutter/flutter#164147) 2025-02-26 engine-flutter-autoroll@skia.org Roll Fuchsia Linux SDK from g-2SJtblPjjaH7Egy... to 1elkOxihZuTEiTXzY... (flutter/flutter#164232) 2025-02-26 engine-flutter-autoroll@skia.org Roll Skia from 47b84f354604 to fdd97386193e (8 revisions) (flutter/flutter#164221) 2025-02-26 jonahwilliams@google.com [Impeller] Reland: move AHB check into Flutter main, don't disable ImageReader on 29. (flutter/flutter#164201) 2025-02-26 engine-flutter-autoroll@skia.org Roll Dart SDK from 80865748abe0 to 7fa5901bd8a3 (3 revisions) (flutter/flutter#164226) 2025-02-26 68449066+zijiehe-google-com@users.noreply.github.com Update fuchsia_test_scripts_version to the latest version (flutter/flutter#164123) 2025-02-26 brackenavaron@gmail.com Guard against zero item extent for carousel (flutter/flutter#163310) 2025-02-26 jonahwilliams@google.com [Impeller] work around for crashy Nexus 5 Driver. (flutter/flutter#164040) 2025-02-26 98614782+auto-submit[bot]@users.noreply.github.com Reverts "Add a buildtools directory and move third_party/ninja to the project root in order to match the expectations of depot_tools (#163890)" (flutter/flutter#164209) 2025-02-26 48155875+Michae1Weiss@users.noreply.github.com Add localization for `Back` and `Cancel` buttons in CupertinoNavigationBar (flutter/flutter#162581) 2025-02-26 30870216+gaaclarke@users.noreply.github.com Added compilation failure if a max ubo size is exceeded (flutter/flutter#164038) 2025-02-26 engine-flutter-autoroll@skia.org Roll Skia from 5336e20498d9 to 47b84f354604 (2 revisions) (flutter/flutter#164188) 2025-02-26 jason-simmons@users.noreply.github.com Add a buildtools directory and move third_party/ninja to the project root in order to match the expectations of depot_tools (flutter/flutter#163890) 2025-02-26 engine-flutter-autoroll@skia.org Roll Skia from 3ce6f25dc13e to 5336e20498d9 (9 revisions) (flutter/flutter#164174) 2025-02-26 engine-flutter-autoroll@skia.org Roll Dart SDK from b8292dfeaa67 to 80865748abe0 (9 revisions) (flutter/flutter#164168) 2025-02-26 dkwingsmt@users.noreply.github.com [Engine] Remove dead code for RoundedSuperellipse (flutter/flutter#164163) 2025-02-26 jonahwilliams@google.com [Impeller] detect mediatek soc and fall back to GLES. (flutter/flutter#164126) 2025-02-26 jonahwilliams@google.com [Impeller] make DLOG into LOG for startup errors. (flutter/flutter#164110) 2025-02-26 15619084+vashworth@users.noreply.github.com Intercept error when iOS 18.4 crashes with JIT mode and give guided error (flutter/flutter#164072) 2025-02-26 98614782+auto-submit[bot]@users.noreply.github.com Reverts "[Impeller] move AHB check to Vulkan, use Vulkan surface on 29. (#164109)" (flutter/flutter#164166) 2025-02-26 zanderso@users.noreply.github.com Run new gallery transition perf benchmark on Galaxy S24 (flutter/flutter#163665) 2025-02-26 jonahwilliams@google.com [Impeller] move AHB check to Vulkan, use Vulkan surface on 29. (flutter/flutter#164109) 2025-02-26 chris@bracken.jp [iOS] Add platform view to integration_test example (flutter/flutter#164144) 2025-02-26 dominik@honnef.co Fix minor issues in documentation of WidgetsApp (flutter/flutter#163942) 2025-02-26 louisehsu@google.com Fix extra numbers showing up when enabling VoiceControl (flutter/flutter#163593) 2025-02-26 cloud@pathconnected.net Set SliverResizingHeader's maxScrollObstructionExtent to minExtent (flutter/flutter#162955) 2025-02-26 engine-flutter-autoroll@skia.org Roll Dart SDK from aea6fff33f06 to b8292dfeaa67 (1 revision) (flutter/flutter#163973) 2025-02-26 flar@google.com [DisplayList] Delete all legacy Skia-oriented method overloads in DlCanvas (flutter/flutter#164054) 2025-02-25 polinach@google.com Clean up leak tracker instrumentation tech debt. (flutter/flutter#164070) 2025-02-25 magder@google.com Revert "Marks Linux_pixel_7pro service_extensions_test to be flaky" (flutter/flutter#163882) 2025-02-25 magder@google.com Check if simctl is installed before trying to list devices or runtimes (flutter/flutter#163895) 2025-02-25 magder@google.com Update dragDevices doc to include default PointerDeviceKind.trackpad (flutter/flutter#163898) 2025-02-25 reidbaker@google.com Update multiple flutters benchmark test to latest gradle and agp and gradle defined dependencies (flutter/flutter#164029) ...

…ter#163180)

Roll Flutter from 1659206 to 2e570ca (75 revisions) flutter/flutter@1659206...2e570ca 2025-02-27 engine-flutter-autoroll@skia.org Roll Skia from ac08df9c8d82 to e5a33102401c (1 revision) (flutter/flutter#164288) 2025-02-27 engine-flutter-autoroll@skia.org Roll Skia from 6018dff0233a to ac08df9c8d82 (1 revision) (flutter/flutter#164275) 2025-02-27 engine-flutter-autoroll@skia.org Roll Dart SDK from 4a218fbffc80 to fcda71ce147b (1 revision) (flutter/flutter#164276) 2025-02-27 engine-flutter-autoroll@skia.org Roll Skia from 0f2e106c9abc to 6018dff0233a (1 revision) (flutter/flutter#164266) 2025-02-27 robert.ancell@canonical.com Add windowing channel support to Linux embedder (flutter/flutter#163180) 2025-02-27 engine-flutter-autoroll@skia.org Roll Dart SDK from 7fa5901bd8a3 to 4a218fbffc80 (2 revisions) (flutter/flutter#164260) 2025-02-27 engine-flutter-autoroll@skia.org Roll Skia from fdd97386193e to 0f2e106c9abc (4 revisions) (flutter/flutter#164259) 2025-02-27 codefu@google.com Run more builds faster (flutter/flutter#164125) 2025-02-27 737941+loic-sharma@users.noreply.github.com Increase customer test timeout to 60 minutes (flutter/flutter#164239) 2025-02-27 jason-simmons@users.noreply.github.com Reland "Add a buildtools directory and move third_party/ninja to the project root in order to match the expectations of depot_tools" (flutter/flutter#164240) 2025-02-27 liama@google.com Use the Dart isolate ownership API on the root isolate (flutter/flutter#163703) 2025-02-26 engine-flutter-autoroll@skia.org Roll Fuchsia Linux SDK from g-2SJtblPjjaH7Egy... to 1elkOxihZuTEiTXzY... (flutter/flutter#164243) 2025-02-26 robert.ancell@canonical.com Show Linux driver information in flutter doctor (flutter/flutter#163980) 2025-02-26 34871572+gmackall@users.noreply.github.com Implement opacity `FlutterMutator` for hcpp (flutter/flutter#164147) 2025-02-26 engine-flutter-autoroll@skia.org Roll Fuchsia Linux SDK from g-2SJtblPjjaH7Egy... to 1elkOxihZuTEiTXzY... (flutter/flutter#164232) 2025-02-26 engine-flutter-autoroll@skia.org Roll Skia from 47b84f354604 to fdd97386193e (8 revisions) (flutter/flutter#164221) 2025-02-26 jonahwilliams@google.com [Impeller] Reland: move AHB check into Flutter main, don't disable ImageReader on 29. (flutter/flutter#164201) 2025-02-26 engine-flutter-autoroll@skia.org Roll Dart SDK from 80865748abe0 to 7fa5901bd8a3 (3 revisions) (flutter/flutter#164226) 2025-02-26 68449066+zijiehe-google-com@users.noreply.github.com Update fuchsia_test_scripts_version to the latest version (flutter/flutter#164123) 2025-02-26 brackenavaron@gmail.com Guard against zero item extent for carousel (flutter/flutter#163310) 2025-02-26 jonahwilliams@google.com [Impeller] work around for crashy Nexus 5 Driver. (flutter/flutter#164040) 2025-02-26 98614782+auto-submit[bot]@users.noreply.github.com Reverts "Add a buildtools directory and move third_party/ninja to the project root in order to match the expectations of depot_tools (#163890)" (flutter/flutter#164209) 2025-02-26 48155875+Michae1Weiss@users.noreply.github.com Add localization for `Back` and `Cancel` buttons in CupertinoNavigationBar (flutter/flutter#162581) 2025-02-26 30870216+gaaclarke@users.noreply.github.com Added compilation failure if a max ubo size is exceeded (flutter/flutter#164038) 2025-02-26 engine-flutter-autoroll@skia.org Roll Skia from 5336e20498d9 to 47b84f354604 (2 revisions) (flutter/flutter#164188) 2025-02-26 jason-simmons@users.noreply.github.com Add a buildtools directory and move third_party/ninja to the project root in order to match the expectations of depot_tools (flutter/flutter#163890) 2025-02-26 engine-flutter-autoroll@skia.org Roll Skia from 3ce6f25dc13e to 5336e20498d9 (9 revisions) (flutter/flutter#164174) 2025-02-26 engine-flutter-autoroll@skia.org Roll Dart SDK from b8292dfeaa67 to 80865748abe0 (9 revisions) (flutter/flutter#164168) 2025-02-26 dkwingsmt@users.noreply.github.com [Engine] Remove dead code for RoundedSuperellipse (flutter/flutter#164163) 2025-02-26 jonahwilliams@google.com [Impeller] detect mediatek soc and fall back to GLES. (flutter/flutter#164126) 2025-02-26 jonahwilliams@google.com [Impeller] make DLOG into LOG for startup errors. (flutter/flutter#164110) 2025-02-26 15619084+vashworth@users.noreply.github.com Intercept error when iOS 18.4 crashes with JIT mode and give guided error (flutter/flutter#164072) 2025-02-26 98614782+auto-submit[bot]@users.noreply.github.com Reverts "[Impeller] move AHB check to Vulkan, use Vulkan surface on 29. (#164109)" (flutter/flutter#164166) 2025-02-26 zanderso@users.noreply.github.com Run new gallery transition perf benchmark on Galaxy S24 (flutter/flutter#163665) 2025-02-26 jonahwilliams@google.com [Impeller] move AHB check to Vulkan, use Vulkan surface on 29. (flutter/flutter#164109) 2025-02-26 chris@bracken.jp [iOS] Add platform view to integration_test example (flutter/flutter#164144) 2025-02-26 dominik@honnef.co Fix minor issues in documentation of WidgetsApp (flutter/flutter#163942) 2025-02-26 louisehsu@google.com Fix extra numbers showing up when enabling VoiceControl (flutter/flutter#163593) 2025-02-26 cloud@pathconnected.net Set SliverResizingHeader's maxScrollObstructionExtent to minExtent (flutter/flutter#162955) 2025-02-26 engine-flutter-autoroll@skia.org Roll Dart SDK from aea6fff33f06 to b8292dfeaa67 (1 revision) (flutter/flutter#163973) 2025-02-26 flar@google.com [DisplayList] Delete all legacy Skia-oriented method overloads in DlCanvas (flutter/flutter#164054) 2025-02-25 polinach@google.com Clean up leak tracker instrumentation tech debt. (flutter/flutter#164070) 2025-02-25 magder@google.com Revert "Marks Linux_pixel_7pro service_extensions_test to be flaky" (flutter/flutter#163882) 2025-02-25 magder@google.com Check if simctl is installed before trying to list devices or runtimes (flutter/flutter#163895) 2025-02-25 magder@google.com Update dragDevices doc to include default PointerDeviceKind.trackpad (flutter/flutter#163898) 2025-02-25 reidbaker@google.com Update multiple flutters benchmark test to latest gradle and agp and gradle defined dependencies (flutter/flutter#164029) ...

Move FlTextInputHandler from FlView

c684835

This moves the final part of the keyboard handling from FlView to the FlEngine and means keyboard should work correctly with multiple views.

github-actions bot added a: text input Entering text in a text field or keyboard related problems engine flutter/engine related. See also e: labels. platform-linux Building on or for Linux specifically a: desktop Running on desktop labels Feb 13, 2025

robert-ancell requested review from hbatagelo, loic-sharma and mattkae February 13, 2025 01:49

robert-ancell force-pushed the linux-windowing-channel branch from 3316d1c to 488d0e3 Compare February 13, 2025 02:34

Implement flutter/windowing for the Linux embedder.

8ea7318

robert-ancell force-pushed the linux-windowing-channel branch from 488d0e3 to 8ea7318 Compare February 13, 2025 02:36

hbatagelo requested changes Feb 13, 2025

View reviewed changes

robert-ancell added 3 commits February 14, 2025 13:40

Sizes changed to floating point values

c63ecf1

Merge remote-tracking branch 'origin/main' into linux-windowing-channel

26708a8

Merge remote-tracking branch 'origin/main' into linux-windowing-channel

2fdbc57

github-actions bot removed the a: text input Entering text in a text field or keyboard related problems label Feb 14, 2025

robert-ancell added 5 commits February 17, 2025 09:59

Merge branch 'main' into linux-windowing-channel

f2b39b2

Fix test broken by mocking gtk_widget_destroy

1e33682

Response to createRegular with width,height,state

0b31c79

Support minSize and maxSize

1b308e2

Fix guard names

fbe5670

hbatagelo approved these changes Feb 17, 2025

View reviewed changes

robert-ancell added 2 commits February 25, 2025 15:42

Merge branch 'main' into linux-windowing-channel

3966824

Disable clang_tidy warnings

7c97df7

robert-ancell added 2 commits February 27, 2025 09:26

Replace the malloc check for the Linux embedder

4fa562b

Try using g_autoptr instead

3d3b312

robert-ancell added 3 commits February 27, 2025 11:31

Re-enable malloc checks in clang-tidy

87c1775

Revert "Re-enable malloc checks in clang-tidy"

632c300

This reverts commit 87c1775.

Fix clang-tidy syntax?

53f2426

robert-ancell added the autosubmit Merge PR when tree becomes green via auto submit App label Feb 27, 2025

auto-submit bot added this pull request to the merge queue Feb 27, 2025

Merged via the queue into flutter:master with commit d8a57c6 Feb 27, 2025
175 of 176 checks passed

flutter-dashboard bot removed the autosubmit Merge PR when tree becomes green via auto submit App label Feb 27, 2025

engine-flutter-autoroll mentioned this pull request Feb 27, 2025

Roll Flutter from 16592066d70b to 2e570ca393c8 (75 revisions) flutter/packages#8731

Merged

engine-flutter-autoroll added a commit to engine-flutter-autoroll/packages that referenced this pull request Feb 27, 2025

d8a57c6 Add windowing channel support to Linux embedder (flutter/flut…

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…ter#163180)

robert-ancell deleted the linux-windowing-channel branch February 27, 2025 23:22

Piinks mentioned this pull request Mar 7, 2025

Flutter Notable Commits - 2025 #161460

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engine-flutter-autoroll added a commit to engine-flutter-autoroll/packages that referenced this pull request May 20, 2025

d8a57c6 Add windowing channel support to Linux embedder (flutter/flut…

2931504

…ter#163180)

engine-flutter-autoroll added a commit to engine-flutter-autoroll/packages that referenced this pull request May 20, 2025

d8a57c6 Add windowing channel support to Linux embedder (flutter/flut…

707bbb5

…ter#163180)

engine-flutter-autoroll added a commit to engine-flutter-autoroll/packages that referenced this pull request May 21, 2025

d8a57c6 Add windowing channel support to Linux embedder (flutter/flut…

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…ter#163180)

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