31413 Commits

Author SHA1 Message Date
flutteractionsbot
0aafd14efa
[CP-beta]Send statusBarTouch events via dedicated messages (#181670)
This pull request is created by [automatic cherry pick workflow](https://github.com/flutter/flutter/blob/main/docs/releases/Flutter-Cherrypick-Process.md#automatically-creates-a-cherry-pick-request)
Please fill in the form below, and a flutter domain expert will evaluate this cherry pick request.

### Issue Link:
What is the link to the issue this cherry-pick is addressing?

https://github.com/flutter/flutter/issues/177992
https://github.com/flutter/flutter/issues/175606

### Impact Description:
What is the impact (ex. visual jank on Samsung phones, app crash, cannot ship an iOS app)?
Does it impact development (ex. flutter doctor crashes when Android Studio is installed),
or the shipping of production apps (the app crashes on launch).
This information is for domain experts and release engineers to understand the consequences of saying yes or no to the cherry pick.

The issues listed above impact app users. For instance #177992 prevents the user from interacting with hamburger menus on iPadOS 26.1+ for context, this probably has always been an issue but on iPadOS 26.1 the height of the status bar became taller so it gets in the way of the hamburger menu.

### Changelog Description:
Explain this cherry pick:
* In one line that is accessible to most Flutter developers.
* That describes the state prior to the fix.
* That includes which platforms are impacted.
See [best practices](https://github.com/flutter/flutter/blob/main/docs/releases/Hotfix-Documentation-Best-Practices.md) for examples.

[flutter/177992] on iPadOS 26.1, tapping on the status bar dismisses the current modal route. 

### Workaround:
Is there a workaround for this issue?

Yes. There is a relatively reliable workaround described here: https://github.com/flutter/flutter/issues/175606#issuecomment-3576240885

### Risk:
What is the risk level of this cherry-pick?

  - [-] Low

### Test Coverage:
Are you confident that your fix is well-tested by automated tests?

  - [-] Yes

### Validation Steps:
What are the steps to validate that this fix works?

Following the repro steps in #177992. I've tried the fix myself on master following the steps outlined in the issue and couldn't reproduce the issue.
2026-02-03 18:57:25 +00:00
flutteractionsbot
55bea55aa2
[CP-beta]Ensure content-sizing resize is run on UI thread (#181732)
This pull request is created by [automatic cherry pick workflow](https://github.com/flutter/flutter/blob/main/docs/releases/Flutter-Cherrypick-Process.md#automatically-creates-a-cherry-pick-request)
Please fill in the form below, and a flutter domain expert will evaluate this cherry pick request.

Cherry-pick of https://github.com/flutter/flutter/pull/181686

### Issue Link:
What is the link to the issue this cherry-pick is addressing?

https://github.com/flutter/flutter/issues/181573

### Impact Description:
What is the impact (ex. visual jank on Samsung phones, app crash, cannot ship an iOS app)?
Crash

Does it impact development (ex. flutter doctor crashes when Android Studio is installed),
or the shipping of production apps (the app crashes on launch).
App crashes

This information is for domain experts and release engineers to understand the consequences of saying yes or no to the cherry pick.

Apps running this code will crash: https://buganizer.corp.google.com/issues/478788744

### Changelog Description:
Explain this cherry pick:
* Makes sure the JNI method is called on Android's UI thread.
* The JNI method would be called by the raster's thread and cause a crash.
* That includes which platforms are impacted.
See [best practices](https://github.com/flutter/flutter/blob/main/docs/releases/Hotfix-Documentation-Best-Practices.md) for examples.
Android Apps

< Replace with changelog description here >
[flutter/181573] When resize JNI method is called on Android, apps will crash.

### Workaround:
Is there a workaround for this issue?

No.

### Risk:
What is the risk level of this cherry-pick?

### Test Coverage:
Are you confident that your fix is well-tested by automated tests?

### Validation Steps:
What are the steps to validate that this fix works?

Run the sample app https://github.com/flutter/samples/pull/2787 and check it does not crash.
2026-02-03 01:17:25 +00:00
flutteractionsbot
15d137647e
[CP-beta]Roll libpng to version 1.6.53 (#181543)
This pull request is created by [automatic cherry pick workflow](https://github.com/flutter/flutter/blob/main/docs/releases/Flutter-Cherrypick-Process.md#automatically-creates-a-cherry-pick-request)
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### Issue Link:
What is the link to the issue this cherry-pick is addressing?

https://github.com/flutter/flutter/issues/180191

### Impact Description:
What is the impact (ex. visual jank on Samsung phones, app crash, cannot ship an iOS app)?
Does it impact development (ex. flutter doctor crashes when Android Studio is installed),
or the shipping of production apps (the app crashes on launch).
This information is for domain experts and release engineers to understand the consequences of saying yes or no to the cherry pick.

Updates a library that had multiple CVE's to a version that has those issues patched. 
https://ubuntu.com/security/CVE-2025-64505
https://ubuntu.com/security/CVE-2025-64506
https://ubuntu.com/security/CVE-2025-64720
https://ubuntu.com/security/CVE-2025-65018

FWIW I have not seen a working exploit against a flutter app. 

### Changelog Description:
Explain this cherry pick:
* In one line that is accessible to most Flutter developers.
* That describes the state prior to the fix.
* That includes which platforms are impacted.
See [best practices](https://github.com/flutter/flutter/blob/main/docs/releases/Hotfix-Documentation-Best-Practices.md) for examples.

< Replace with changelog description here >
[flutter/180191] Update libpng to 1.6.53 to mitigate multiple CVE's published November/December 2025. 

### Workaround:
Is there a workaround for this issue?

No work around. 

### Risk:
What is the risk level of this cherry-pick?

### Test Coverage:
Are you confident that your fix is well-tested by automated tests?

  - [ x ] Yes

### Validation Steps:
What are the steps to validate that this fix works?

Run the standard test suite on CI including golden image tests.
2026-01-27 21:51:32 +00:00
Jim Graham
eca1271bbc
[beta] [Impeller] Fix crash trying to check for duplicate vertices in shadow_path code (#180920) (#181095)
The new general convex path shadow code was checking for duplicate vertices without actually checking if the vectors contained any vertices. Thus, <vector>.back() was being called on empty vectors, which is bad. This led to a crash in G3 as their code is being run with a vector implementation that protects against this, but apparently we do not have such a vector implementation in our local building and testing.

No tests because this covered by existing test cases and a new FML_DCHECK.

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Fixes https://github.com/flutter/flutter/issues/180827

Impacted users: Any user who uses shadows (pretty much every Flutter app) on a platform that has address sanitization built into its `std::vector` implementation, if they use Impeller (always used on iOS and the default on Android)

Impact Description: Every shadow render operation in Impeller backend will access `back()` on an empty `std::vector` which will crash immediately if the vector is using sanitization on that platform.

Workaround: Potentially look into disabling address sanitization? On platforms that still support Skia, it can be used as a workaround, but that is not an option on iOS

Risk: The fix was obvious and non-controversial.

Test Coverage: Existing tests cover this case really well and there is now an FML_DCHECK (engine assert) to check if we trigger the condition under testing.

Validation: The original issue indicates an app that will trigger the sanitization crash, but only in G3. None of the platforms we support directly through flutter perform this sanitization.

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2026-01-27 18:44:05 +00:00
Harry Terkelsen
a430f664da
[CP] Fix style_manager_test for Firefox (#181084) (#181204)
Fixes style_manager_test.dart for Firefox by

1. changing the CSS to explicitly set `outline: rgb(0, 0, 0) none 0px`
2. actually focusing the element before checking it's computed style

Fixes https://github.com/flutter/flutter/issues/181203

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2026-01-22 13:55:40 +00:00
gaaclarke
5b5bf6c26b
De-interleaves engine dart test output (#180651)
This includes the following changes:
1) Logging output from dart tests is no longer interleaved
1) The backend that is running the test is now printed out
1) `TestingContext` abstraction was added in order to support more
rendering backends in the future

test exempt: it is tests

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2026-01-08 20:18:59 +00:00
zhongliugo
773923a55d
[web] Fix SemanticsService.announce not working inside dialogs (#179958)
Fixes #179076

**Solution**
When a modal dialog is present, temporarily move the existing aria-live
element inside the modal dialog before making the announcement, then
move it back afterward. A small delay is also added to allow VoiceOver
to finish reading the button's accessible name first.

**Demo**
Before (bug): https://flutter-demo-03-before.web.app
After (fix): https://flutter-demo-03-after.web.app

**Testing**
Enable VoiceOver (Cmd+F5 on macOS)
Open a dialog and click the "Announce" button
Verify the announcement is spoken after the button label

**Next step**
Filing a follow-up issue for: Adding a delay parameter to
SemanticsService.announce() API for developers who need custom delays
for long button labels
2026-01-08 20:18:58 +00:00
Mohellebi abdessalem
9ddfe82ce4
Improve code quality in AndroidTouchProcessorTest.java (#180583)
<img width="1017" height="89" alt="Screenshot 2026-01-06 at 16 37 39"
src="https://github.com/user-attachments/assets/78d61725-6519-4da2-b931-1e293b36936e"
/>


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2026-01-08 18:49:22 +00:00
Harry Terkelsen
cbd8912a29
Revert "Reverts "[reland] Unify canvas creation and Surface code in S…kwasm and CanvasKit (#179473)" (#180152)" (#180610)
This PR introduces a significant refactoring of the web engine's
rendering layer by unifying the Surface and Rasterizer implementations.
These components have been moved from being renderer-specific to a
generic compositing directory, making the architecture more modular and
easier to maintain. The rasterizers are now renderer-agnostic and are
provided with renderer-specific surface factories via dependency
injection. A new CanvasProvider abstraction has also been introduced to
manage the lifecycle of the underlying canvas elements.

A key outcome of this work is that the Skwasm backend now correctly
handles WebGL context loss events. This was achieved by refactoring
SkwasmSurface to allow the Dart side to manage the OffscreenCanvas
lifecycle. A communication channel between the main thread and the web
worker is now used to gracefully handle context loss and recovery. This
effort also included fixing several related bugs around surface sizing,
resource cleanup, and callback handling in multi-surface scenarios.

To validate these changes, new testing APIs have been added to allow for
the creation of renderer-agnostic surface tests. A new test file,
surface_context_lost_test.dart, has been added to verify the context
loss and recovery behavior across all supported renderers, ensuring the
new architecture is robust and reliable.

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2026-01-08 18:38:25 +00:00
John "codefu" McDole
41a1df2a1b
fix: missing MSVC 2022 (#180661)
codefu wins the shamecube award for bad python.

Tested on windows 11 enterprise + vc 2022:

```shell
Searching for installed Visual Studio versions: 2019, 2017, 2022, 2026, 16.0, 15.0, 17.0, 18
vs_path = "C:\\Program Files/Microsoft Visual Studio/2022/Community"
sdk_path = "C:\\Program Files (x86)\\Windows Kits\\10"
vs_version = "2022"
wdk_dir = ""
runtime_dirs = "C:\\Windows\\System32;C:\\Windows\\SysWOW64;Arm64Unused"
```

fixes #180660
2026-01-08 00:15:02 +00:00
Gray Mackall
72db6159d7
Also host build-tools 33.0.1, platform-34, and platform-35 in our android_sdk bundle (#180653)
See
https://github.com/flutter/flutter/issues/172956#issuecomment-3717942182,
but basically we use these in ci, and if we put them in the bundle we
eliminate more downloading, which has caused flakes.

38 instead of 37 because I ran the script once without java on my path,
which meant before I could ctrl+c we registered an empty
https://chrome-infra-packages.appspot.com/p/flutter/android/sdk/all/mac-amd64/+/xLObmfS7IH8ElsjrUJNC8YjtTB5R8oYuYv8765UuwzsC,
so that would have conflicted and been a headache to remove the tag
from.

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Co-authored-by: Gray Mackall <mackall@google.com>
2026-01-07 22:04:33 +00:00
Mohellebi abdessalem
36fe54273b
Prevent calling setStatusBarColor on API_35 and update related documentation (#180062)
see :
https://github.com/flutter/flutter/issues/165327#issuecomment-3264734393
towards #165327 (see
https://discord.com/channels/608014603317936148/846507907876257822/1451187625116569660)

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---------

Co-authored-by: gemini-code-assist[bot] <176961590+gemini-code-assist[bot]@users.noreply.github.com>
Co-authored-by: Camille Simon <43054281+camsim99@users.noreply.github.com>
2026-01-07 19:13:58 +00:00
gaaclarke
30799e113c
Added type annotations and removed lints for run_tests.py (#180597)
This passes mypy and pylint. I looked into introducing mypy into ci, but
it didn't make sense considering the small number of python scripts.

Test exempt: this is a test

## Pre-launch Checklist

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2026-01-07 18:29:17 +00:00
Gray Mackall
519dcdcc7d
Fix resonant explosion of scroll disconnect when scrolling a pv in a list (#180246)
I don't know if there is an issue for this, but without the fix it looks
like (in particular see the end of the video)


https://github.com/user-attachments/assets/0c25ffdf-1fc0-4eb2-a18e-f5b369b266d3


and with the fix it looks like



https://github.com/user-attachments/assets/ade37009-a40b-4d1e-be22-b5ca5adfe246

Basically, we were using the value passed in by the engine in
`onDisplayPlatformView(2)` to try to calculate the offset for this
touch. However, we aren't guaranteed a call to `onDisplayPlatformView`
for each call to `FlutterMutatorView.onTouchEvent`, and in practice we
don't normally get them lined up like that, so the value is stale. Also,
the touches are frequently changing by sub pixel values, but the values
passed to `onDisplayPlatformView` are received as ints (we could maybe
fix this, if it matters elsewhere). So this is fragile, comparing whole
pixel to sub pixel, and also uses stale values. We can instead just ask
android where the view is, I believe (this is what the PR does, and it
works AFAICT).

I don't know how to test this.

---------

Co-authored-by: Gray Mackall <mackall@google.com>
2026-01-07 18:25:18 +00:00
Mohellebi abdessalem
24eed52c8a
Improve code quality in KeyboardManagerTest.java (#180625)
This change :
- Fixes lints about wrong order of `assert` argument .
- Removes unnecessary `static modifiers` .
- Fixes `'long' literal '0x666677778888l' ends with lowercase 'l'`.
- Fixes small typos that i found .

| Before | After |
|--------|-------|
| <img width="165" height="30" alt="Before"
src="https://github.com/user-attachments/assets/b40d231e-b9f9-4dec-bc70-735ec9462756"
/> | <img width="159" height="37" alt="After"
src="https://github.com/user-attachments/assets/b491cbf2-0646-4891-9186-bd3903e1a116"
/> |


## Pre-launch Checklist

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2026-01-07 17:28:12 +00:00
Mohellebi abdessalem
3a907d98fb
Improve code quality in FlutterActivityTest.java (#180585)
Removes unused import and fix some typos.

## Pre-launch Checklist

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2026-01-07 17:07:03 +00:00
Slava Egorov
6acc84ee2c
Bump target Windows version to 10 (#180624)
Based on https://docs.flutter.dev/reference/supported-platforms Flutter
only supports Windows 10 or above.

This makes Flutter buildroot configuration match Dart's.
2026-01-07 16:52:26 +00:00
Mohellebi abdessalem
a73c1002a6
Remove more requires 24 anotations (#180116)
similar to #180051
<img width="471" height="234" alt="save_0"
src="https://github.com/user-attachments/assets/f3ef3e61-861e-456e-a7ec-f2315db742bc"
/>


## Pre-launch Checklist

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we expect every widget to implement].
- [x] I signed the [CLA].
- [ ] I listed at least one issue that this PR fixes in the description
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- [ ] I updated/added relevant documentation (doc comments with `///`).
- [ ] I added new tests to check the change I am making, or this PR is
[test-exempt].
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2026-01-07 14:47:25 +00:00
Mohellebi abdessalem
2b067ece17
Remove unnecessary @RequiresApi24 annotations from FlutterFragment methods (#180117)
similar to #180051

## Pre-launch Checklist

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2026-01-07 08:28:27 +00:00
Ben Konyi
15c48f2922
[ Widget Preview ] Add support for dart:ffi imports (#180586)
Adds logic to pass `--include-unsupported-platform-library-stubs` to the
CFE when launched via `flutter widget-preview start`, as well as logic
to ensure the flag can't be passed as an extra frontend option to bypass
compile time errors due to imports of unsupported libraries.

Fixes https://github.com/flutter/flutter/issues/166431
2026-01-07 01:47:22 +00:00
Kaylee Lubick
a404f7c499
[skia] Disable legacy non-const SkData APIs (#179684)
Now that https://github.com/flutter/flutter/pull/179347 landed (update:
waiting on https://skia-review.googlesource.com/c/skia/+/1122216 to land
and roll), we should be able to make sure Flutter doesn't accidentally
backslide.

This also removes defines that have been removed from Skia.

## Pre-launch Checklist

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we expect every widget to implement].
- [x] I signed the [CLA].
- [ ] I listed at least one issue that this PR fixes in the description
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- [x] I updated/added relevant documentation (doc comments with `///`).
- [x] I added new tests to check the change I am making, or this PR is
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2026-01-06 18:51:06 +00:00
Kostia Sokolovskyi
be03f0d3b1
Add tooltip support to PlatformMenuItem and PlatformMenu. (#180069)
Closes https://github.com/flutter/flutter/issues/180031

### Description
- Adds `tooltip` support to `PlatformMenuItem` and `PlatformMenu`
- Updates `platform_menu_bar_test.dart` to cover `tooltip` related
changes and makes test-specific code private
- Updates `FlutterMenuPlugin.mm` to support `tooltip`
- Updates `FlutterMenuPluginTest.mm` to cover `tooltip` related changes


https://github.com/user-attachments/assets/abafc1ec-dc2f-45ae-a3b5-1e88759dac37

<details closed><summary>Code sample</summary>

```dart
// THIS SAMPLE ONLY WORKS ON MACOS.

import 'package:flutter/material.dart';
import 'package:flutter/services.dart';

/// Flutter code sample for [PlatformMenuBar].

void main() => runApp(const ExampleApp());

enum MenuSelection { about, showMessage }

class ExampleApp extends StatelessWidget {
  const ExampleApp({super.key});

  @override
  Widget build(BuildContext context) {
    return const MaterialApp(home: Scaffold(body: PlatformMenuBarExample()));
  }
}

class PlatformMenuBarExample extends StatefulWidget {
  const PlatformMenuBarExample({super.key});

  @override
  State<PlatformMenuBarExample> createState() => _PlatformMenuBarExampleState();
}

class _PlatformMenuBarExampleState extends State<PlatformMenuBarExample> {
  String _message = 'Hello';
  bool _showMessage = false;

  void _handleMenuSelection(MenuSelection value) {
    switch (value) {
      case MenuSelection.about:
        showAboutDialog(
          context: context,
          applicationName: 'MenuBar Sample',
          applicationVersion: '1.0.0',
        );
      case MenuSelection.showMessage:
        setState(() {
          _showMessage = !_showMessage;
        });
    }
  }

  @override
  Widget build(BuildContext context) {
    ////////////////////////////////////
    // THIS SAMPLE ONLY WORKS ON MACOS.
    ////////////////////////////////////

    // This builds a menu hierarchy that looks like this:
    // Flutter API Sample
    //  ├ About
    //  ├ ────────  (group divider)
    //  ├ Hide/Show Message
    //  ├ Messages
    //  │  ├ I am not throwing away my shot.
    //  │  └ There's a million things I haven't done, but just you wait.
    //  └ Quit
    return PlatformMenuBar(
      menus: <PlatformMenuItem>[
        PlatformMenu(
          label: 'Flutter API Sample',
          menus: <PlatformMenuItem>[
            PlatformMenuItemGroup(
              members: <PlatformMenuItem>[
                PlatformMenuItem(
                  label: 'About',
                  tooltip: 'Show information about APP_NAME',
                  onSelected: () {
                    _handleMenuSelection(MenuSelection.about);
                  },
                ),
              ],
            ),
            PlatformMenuItemGroup(
              members: <PlatformMenuItem>[
                PlatformMenuItem(
                  onSelected: () {
                    _handleMenuSelection(MenuSelection.showMessage);
                  },
                  shortcut: const CharacterActivator('m'),
                  label: _showMessage ? 'Hide Message' : 'Show Message',
                  tooltip: _showMessage
                      ? 'The message will be hidden.'
                      : 'The message will be shown.',
                ),
                PlatformMenu(
                  label: 'Messages',
                  menus: <PlatformMenuItem>[
                    PlatformMenuItem(
                      label: 'I am not throwing away my shot.',
                      shortcut: const SingleActivator(
                        LogicalKeyboardKey.digit1,
                        meta: true,
                      ),
                      onSelected: () {
                        setState(() {
                          _message = 'I am not throwing away my shot.';
                        });
                      },
                    ),
                    PlatformMenuItem(
                      label:
                          "There's a million things I haven't done, but just you wait.",
                      shortcut: const SingleActivator(
                        LogicalKeyboardKey.digit2,
                        meta: true,
                      ),
                      onSelected: () {
                        setState(() {
                          _message =
                              "There's a million things I haven't done, but just you wait.";
                        });
                      },
                    ),
                  ],
                ),
              ],
            ),
            if (PlatformProvidedMenuItem.hasMenu(
              PlatformProvidedMenuItemType.quit,
            ))
              const PlatformProvidedMenuItem(
                type: PlatformProvidedMenuItemType.quit,
              ),
          ],
        ),
      ],
      child: Center(
        child: Text(
          _showMessage
              ? _message
              : 'This space intentionally left blank.\n'
                    'Show a message here using the menu.',
        ),
      ),
    );
  }
}

```

</details>

## Pre-launch Checklist

- [X] I read the [Contributor Guide] and followed the process outlined
there for submitting PRs.
- [X] I read the [Tree Hygiene] wiki page, which explains my
responsibilities.
- [X] I read and followed the [Flutter Style Guide], including [Features
we expect every widget to implement].
- [X] I signed the [CLA].
- [X] I listed at least one issue that this PR fixes in the description
above.
- [X] I updated/added relevant documentation (doc comments with `///`).
- [X] I added new tests to check the change I am making, or this PR is
[test-exempt].
- [X] I followed the [breaking change policy] and added [Data Driven
Fixes] where supported.
- [X] All existing and new tests are passing.

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2026-01-06 15:22:38 +00:00
Simon Binder
4c3f603a41
Don't embed unreferenced assets (#179251)
When a Flutter app depends on a package using hooks to add code assets,
those get built to `build/native_assets/$platform`, where `$platform` is
something like `ios` or `macos`. Crucially, there's no difference
between simulator or release builds here, all native assets for a
platform end up in that directory.

To embed those frameworks with the app, the "sign and embed" stage of an
XCode build invokes `xcode_backend.dart`, which then copies all
frameworks from `build/native_assets/$targetPlatform` into
`$build/Runner.app/Frameworks`. This is a problem when a developer runs
a simulator build followed by a release build without clearing the build
folder in between, since both assets would be in
`build/native_assets/ios` at that point.

This fixes the issue by:

1. Reading the `native_assets.json` file emitted by the main build.
2. Only copying frameworks referenced in that file.

This still needs an integration test.

Closes https://github.com/flutter/flutter/issues/178602.

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Co-authored-by: Victoria Ashworth <15619084+vashworth@users.noreply.github.com>
2026-01-06 10:40:38 +00:00
GowsikRaja
fa8898f682
docs: Impeller usage requirements for ImageFilter.shader and isShader… (#179387)
Summary

This PR improves the API documentation for ImageFilter.shader and
isShaderFilterSupported by making the Impeller requirement more explicit
and visible.

What was changed

Added an “Important” notice to clearly state that these APIs are only
supported with Impeller.
Updated the doc comments to front-load this detail instead of placing it
later in the text.
Added cross-reference notes explaining how isShaderFilterSupported
relates to Impeller.
Why this change is helpful

Developers frequently run into confusion when using shader-based filters
without realizing they require Impeller. This change makes the
requirement obvious and easier to discover.

Issue reference

Fixes #178767
2026-01-05 22:52:08 +00:00
Gray Mackall
884c9b4301
Add a null check for embedded view being added to accessibility tree (#180539)
Fixes 
https://github.com/flutter/flutter/issues/180381
https://github.com/flutter/flutter/issues/179922

which track a regression from
https://github.com/flutter/flutter/pull/168939

Wraps in a null check, and if the embeddedView is null we fall back to
adding the semantics node we are looking at in the loop as a child.

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2026-01-05 22:50:44 +00:00
Andrew Marshall
77dba65d63
add the existing compute unit tests to the build (#179689)
There are existing compute unit tests in `compute_unittests.cc` but they
were not added to the build. Add them if `impeller_enable_compute` is
enabled.

Closes #179709

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2026-01-05 22:46:27 +00:00
Andrew Marshall
937266f668
use a libcxx abi namespace compatible with lldb (#180134)
LLDB's type formatters expect the libcxx ABI namespace to start with two
leading underscores.

See [LLDB Discourse
Thread](https://discourse.llvm.org/t/lldb-type-summaries-not-displayed-for-libcxx-types/88447)
and [LLDB
Sources](5099c07fa0/lldb/source/Plugins/Language/CPlusPlus/CPlusPlusLanguage.cpp (L761))

Fixes #180132

Note that this change requires a complete rebuild of the engine sources
- see related #180128

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2026-01-05 21:31:10 +00:00
Mohellebi abdessalem
dc089b6722
Fix linter warnings in AccessibilityBridgeTest.java‎ (#180118)
This change fixes some of the linter warnings about wrong order of
arguments passed to `asserts` , and fixes a small warning about
`Charset` usage, an example of these warnings :

<img width="466" height="41" alt="linter_warnings"
src="https://github.com/user-attachments/assets/4400d046-a505-4e03-9bbf-8a965a8cb572"
/>

before:

<img width="129" height="60" alt="after"
src="https://github.com/user-attachments/assets/8b90888e-a275-4008-a2fb-1b8c5522b389"
/>

after:

<img width="102" height="49" alt="after_1"
src="https://github.com/user-attachments/assets/f7927a73-4a7e-45ab-8984-507371fb40c5"
/>


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2026-01-05 20:13:26 +00:00
Mohellebi abdessalem
c027b52433
Remove unnecessary semicolon in InputConnectionAdaptor.java (#180473)
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2026-01-05 18:13:52 +00:00
Mohellebi abdessalem
5423b00657
Small cleanUp in FlutterView.java (#180474)
fixes:
- link specified as text.
- typos.
- unnecessary `toString()`.
- refactor similar catch blocks.

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2026-01-05 16:18:44 +00:00
chunhtai
423a30323c
Relands "Feat: Add a11y for loading indicators (#165173)" (#178402)
This reverts commit ef29db350f0951ab976e2fdb5d092e65578329e5.

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reland https://github.com/flutter/flutter/pull/165173

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2026-01-02 22:43:24 +00:00
bungeman
c00f050f11
Add SK_SUPPORT_LEGACY_UNSPANNED_GRADIENTS to SkUserConfig.h (#180443)
Skia is planning to remove some deprecated gradient factory methods. Add
a define to keep them until they are no longer used.
2026-01-02 20:13:07 +00:00
Tong Mu
0015d2b6bf
[Framework] iOS style blurring and ImageFilterConfig (#175473)
This PR adds the framework support for a new iOS-style blur. The new
style, which I call "bounded blur", works by adding parameters to the
blur filter that specify the bounds for the region that the filter
sources pixels from.

As discussed in design doc
[flutter.dev/go/ios-style-blur-support](http://flutter.dev/go/ios-style-blur-support),
it's impossible to pass layout information to filters with the current
`ImageFilter` design. Therefore this PR creates a new class
`ImageFilterConfig`.

This PR also applies bounded blur to `CupertinoPopupSurface`. The
following images show the different looks of a dialog in front of
background with abrupt color changes just outside of the border. Notice
how the abrupt color changes no longer bleed in.

<img width="639" height="411" alt="image"
src="https://github.com/user-attachments/assets/4ceb9620-1056-45c3-b5fa-2ed16d90aace"
/>

<img width="639" height="411" alt="image"
src="https://github.com/user-attachments/assets/abe564f7-ea60-4d07-ad58-063c0e3794a5"
/>

This feature continues to matter for iOS 26, since the liquid glass
design also heavily features blurring.

### API changes

* `BackdropFilter`: Add `filterConfig`
* `RenderBackdropFilter`: Add `filterConfig`. Deprecate `filter`.
* `ImageFilter`: Add `debugShortDescription` (previously private
property `_shortDescription`)

### Demo

The following video compares the effect of a bounded blur and an
unbounded blur.


https://github.com/user-attachments/assets/f715db44-c0a0-4ac8-a163-6b859665b032

<details>
<summary>
Demo source
</summary>

```
// Add to pubspec.yaml:
//
//  assets:
//      - assets/kalimba.jpg
//
// and download the image from
// ec6f550237/engine/src/flutter/impeller/fixtures/kalimba.jpg

import 'package:flutter/material.dart';

void main() => runApp(const MaterialApp(home: BlurEditorApp()));

class ControlPoint extends StatefulWidget {
  const ControlPoint({
    super.key,
    required this.position,
    required this.onPanUpdate,
    this.radius = 20.0,
  });

  final Offset position;
  final GestureDragUpdateCallback onPanUpdate;
  final double radius;

  @override
  ControlPointState createState() => ControlPointState();
}

class ControlPointState extends State<ControlPoint> {
  bool isHovering = false;

  @override
  Widget build(BuildContext context) {
    return Positioned(
      left: widget.position.dx - widget.radius,
      top: widget.position.dy - widget.radius,
      child: MouseRegion(
        onEnter: (_) { setState((){ isHovering = true; }); },
        onExit: (_) { setState((){ isHovering = false; }); },
        cursor: SystemMouseCursors.move,
        child: GestureDetector(
          onPanUpdate: widget.onPanUpdate,
          child: AnimatedContainer(
            duration: const Duration(milliseconds: 200),
            width: widget.radius * 2,
            height: widget.radius * 2,
            decoration: BoxDecoration(
              shape: BoxShape.circle,
              color: isHovering
                  ? Colors.white.withValues(alpha: 0.8)
                  : Colors.white.withValues(alpha: 0.4),
              border: Border.all(color: Colors.white, width: 2),
              boxShadow: [
                if (isHovering)
                  BoxShadow(
                    color: Colors.white.withValues(alpha: 0.5),
                    blurRadius: 10,
                    spreadRadius: 2,
                  )
              ],
            ),
            child: const Icon(Icons.drag_indicator, size: 16, color: Colors.black54),
          ),
        ),
      ),
    );
  }
}

class BlurPanel extends StatelessWidget {
  const BlurPanel({super.key, required this.blurRect, required this.bounded});

  final Rect blurRect;
  final bool bounded;

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: Column(
        children: [
          Expanded(
            child: Stack(
              children: [
                Positioned.fill(
                  child: Image.asset(
                    'assets/kalimba.jpg',
                    fit: BoxFit.cover,
                  ),
                ),
                Positioned.fromRect(
                  rect: blurRect,
                  child: ClipRect(
                      child: BackdropFilter(
                    filterConfig: ImageFilterConfig.blur(
                        sigmaX: 10, sigmaY: 10, bounded: bounded),
                    child: Container(),
                  )),
                ),
              ],
            ),
          ),
          Padding(
            padding: const EdgeInsets.all(8.0),
            child: Text(
              bounded ? 'Bounded Blur' : 'Unbounded Blur',
              style: const TextStyle(fontSize: 20, fontWeight: FontWeight.bold),
            ),
          ),
        ],
      ),
    );
  }
}

class BlurEditorApp extends StatefulWidget {
  const BlurEditorApp({super.key});

  @override
  State<BlurEditorApp> createState() => _BlurEditorAppState();
}

class _BlurEditorAppState extends State<BlurEditorApp> {
  Offset p1 = const Offset(100, 100);
  Offset p2 = const Offset(300, 300);

  @override
  Widget build(BuildContext context) {
    final blurRect = Rect.fromPoints(p1, p2);

    return Scaffold(
      body: Stack(
        children: [
          Positioned.fill(
            child: Row(
              children: [
                Expanded(
                  child: BlurPanel(blurRect: blurRect, bounded: true),
                ),
                Expanded(
                  child: BlurPanel(blurRect: blurRect, bounded: false),
                ),
              ],
            ),
          ),

          ControlPoint(position: p1, onPanUpdate: (details) { setState(() => p1 = details.globalPosition); }),
          ControlPoint(position: p2, onPanUpdate: (details) { setState(() => p2 = details.globalPosition); }),
        ],
      ),
    );
  }
}

```

</details>


## Pre-launch Checklist

- [ ] I read the [Contributor Guide] and followed the process outlined
there for submitting PRs.
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2025-12-30 21:57:28 +00:00
walley892
560cb50dae
Fix issue with getUniformFloat crashing with hot reload (#180138)
Fixes https://github.com/flutter/flutter/issues/180101.

Our hot reloading behavior for shader uniforms only handled the case
where uniforms were reordered. In the case that a uniform was renamed or
deleted, and a user had acquired a handle to that uniform via
`getUniformFloat`, we would try (and fail) to locate that uniform in the
shader, and the program would crash.

This PR fixes that issue and adds a test to verify. Also manually
verified on mac and android

## Pre-launch Checklist

- [ x] I read the [Contributor Guide] and followed the process outlined
there for submitting PRs.
- [ x] I read the [Tree Hygiene] wiki page, which explains my
responsibilities.
- [ x] I read and followed the [Flutter Style Guide], including
[Features we expect every widget to implement].
- [ x] I signed the [CLA].
- [ x] I listed at least one issue that this PR fixes in the description
above.
- [ x] I updated/added relevant documentation (doc comments with `///`).
- [ x] I added new tests to check the change I am making, or this PR is
[test-exempt].
- [ x] I followed the [breaking change policy] and added [Data Driven
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2025-12-30 21:38:26 +00:00
walley892
b51ad9db38
Allow setting vector uniforms by name. (#179927)
Create a few thin wrappers around `UniformFloatSlot` that allow users to
get Vector uniforms by name and set all elements in one go.

Before:
```dart
shader.getUniformFloat('uColor', 0).set(color.r);
shader.getUniformFloat('uColor', 1).set(color.g);
shader.getUniformFloat('uColor', 2).set(color.b);
```

After:
```dart
shader.getUniformVec3('uColor').set(color.r, color.g, color.b);
```

This enforces that the requested vector is actually of the requested
size. For example:
```dart
shader.getUniformVec2('someVec3Uniform');
```
will fail instead of allowing partial uniform access.

## Follow up
This doesn't add list or matrix datatypes, those will come later. 
Also doesn't have anything super fancy like accessors/setters for
individual elements.


## Pre-launch Checklist

- [ x] I read the [Contributor Guide] and followed the process outlined
there for submitting PRs.
- [ x] I read the [Tree Hygiene] wiki page, which explains my
responsibilities.
- [ x] I read and followed the [Flutter Style Guide], including
[Features we expect every widget to implement].
- [ x] I signed the [CLA].
- [ x] I listed at least one issue that this PR fixes in the description
above.
- [ x] I updated/added relevant documentation (doc comments with `///`).
- [ x] I added new tests to check the change I am making, or this PR is
[test-exempt].
- [ x] I followed the [breaking change policy] and added [Data Driven
Fixes] where supported.
- [ x] All existing and new tests are passing.
2025-12-30 01:06:42 +00:00
Jim Graham
b568f332e5
New optimized general convex path shadow algorithm (#178370)
<!--
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Convex paths will now use an optimized mesh-based algorithm to render
shadows. The algorithm is based on the code in SkShadowTessellator.

Fixes https://github.com/flutter/flutter/issues/170764

## Pre-launch Checklist

- [x] I read the [Contributor Guide] and followed the process outlined
there for submitting PRs.
- [x] I read the [Tree Hygiene] wiki page, which explains my
responsibilities.
- [x] I read and followed the [Flutter Style Guide], including [Features
we expect every widget to implement].
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- [x] I updated/added relevant documentation (doc comments with `///`).
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[test-exempt].
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2025-12-23 17:50:23 +00:00
Tong Mu
906d520c2b
[Engine] iOS style blurring (#175458)
This PR adds the engine support for a new iOS-style blur. It works by
adding parameters to the blur filter that specify its _blurring bounds_.

This is the engine-side implementation. The corresponding framework
changes that expose this to developers are in:
* Framework PR: https://github.com/flutter/flutter/pull/175473

Related issues:
* Main tracking issue: https://github.com/flutter/flutter/issues/99691
* Algorithm details:
https://github.com/flutter/flutter/issues/164267#issuecomment-2731163225

Design doc & previous discussions:
[flutter.dev/go/ios-style-blur-support](flutter.dev/go/ios-style-blur-support)

### The Visual (Before & After)

This new mode, which I'm calling "bounded blur," is different from the
traditional (global) gaussian blur in that blurs would not sample
transparent pixels from outside the provided area.

The demo below shows the old blur (left) and the new bounded blur
(right). Both are blurring a black triangle.

<img width="1008" height="557" alt="image"
src="https://github.com/user-attachments/assets/202fa4a1-a61f-4357-9dce-73c545cf3b07"
/>

<img height="557" alt="image"
src="https://github.com/user-attachments/assets/0d544e6a-4c88-488d-84c3-60d617c9d614"
/>

Notice the new version on the right no longer has the bright "lining" at
the top and left edges. This is because the blur algorithm now knows its
own bounds and correctly stops sampling pixels from outside that area.

### Technical details

#### API Change

To pass the bounds information down, I've added new parameters to
`_initBlur`:

```dart
  // painting.dart
  external void _initBlur(
    double sigmaX,
    double sigmaY,
    int tileMode,
    bool bounded,  // Start of new parameters
    double boundsLeft,
    double boundsTop,
    double boundsRight,
    double boundsBottom,
  );
```

#### How the Bounds Are Used
These bounds are passed all the way down to `GaussianBlurFilterContents`
and affect two key parts of the process:

* Downsampling Pass: The shader is instructed not to sample any pixels
outside the provided bounds.
* Blurring Passes: The final blurred result is divided by the resulting
opacity. This normalizes the varying alpha (due to varying sum of
weights) across the pixels near the edge.

#### Notable Engine Changes
To handle the downsampling logic, I created a new downsampling shader
`texture_downsample_bounded`.

## Pre-launch Checklist

- [ ] I read the [Contributor Guide] and followed the process outlined
there for submitting PRs.
- [ ] I read the [Tree Hygiene] wiki page, which explains my
responsibilities.
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- [ ] I added new tests to check the change I am making, or this PR is
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2025-12-23 01:43:15 +00:00
Mohellebi abdessalem
252992f143
Small clean up in LocalizationPlugin (#180053)
- remove unused local variable.
- refactor similar logic (return part) between the two parts of the
function.

## Pre-launch Checklist

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responsibilities.
- [x] I read and followed the [Flutter Style Guide], including [Features
we expect every widget to implement].
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- [x] I followed the [breaking change policy] and added [Data Driven
Fixes] where supported.
- [ ] I listed at least one issue that this PR fixes in the description
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2025-12-22 19:32:15 +00:00
Mohellebi abdessalem
1ba3333685
Remove usages of Android's AsyncTask in favor of java.util.concurrent (#180050)
Fixes #98609
## Pre-launch Checklist

- [x] I read the [Contributor Guide] and followed the process outlined
there for submitting PRs.
- [x] I read the [Tree Hygiene] wiki page, which explains my
responsibilities.
- [x] I read and followed the [Flutter Style Guide], including [Features
we expect every widget to implement].
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above.
- [x] I updated/added relevant documentation (doc comments with `///`).
- [ ] I added new tests to check the change I am making, or this PR is
[test-exempt].
- [x] I followed the [breaking change policy] and added [Data Driven
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2025-12-22 17:13:24 +00:00
auto-submit[bot]
78a6a010ae
Reverts "[reland] Unify canvas creation and Surface code in Skwasm and CanvasKit (#179473)" (#180152)
<!-- start_original_pr_link -->
Reverts: flutter/flutter#179473
<!-- end_original_pr_link -->
<!-- start_initiating_author -->
Initiated by: harryterkelsen
<!-- end_initiating_author -->
<!-- start_revert_reason -->
Reason for reverting: Potentially causing flaky skwasm framework tests:
https://ci.chromium.org/ui/p/flutter/builders/prod/Linux%20web_skwasm_tests_1/9062/overview
<!-- end_revert_reason -->
<!-- start_original_pr_author -->
Original PR Author: harryterkelsen
<!-- end_original_pr_author -->

<!-- start_reviewers -->
Reviewed By: {mdebbar}
<!-- end_reviewers -->

<!-- start_revert_body -->
This change reverts the following previous change:
This PR introduces a significant refactoring of the web engine's
rendering layer by unifying the Surface and Rasterizer implementations.
These components have been moved from being renderer-specific to a
generic compositing directory, making the architecture more modular and
easier to maintain. The rasterizers are now renderer-agnostic and are
provided with renderer-specific surface factories via dependency
injection. A new CanvasProvider abstraction has also been introduced to
manage the lifecycle of the underlying canvas elements.

A key outcome of this work is that the Skwasm backend now correctly
handles WebGL context loss events. This was achieved by refactoring
SkwasmSurface to allow the Dart side to manage the OffscreenCanvas
lifecycle. A communication channel between the main thread and the web
worker is now used to gracefully handle context loss and recovery. This
effort also included fixing several related bugs around surface sizing,
resource cleanup, and callback handling in multi-surface scenarios.

To validate these changes, new testing APIs have been added to allow for
the creation of renderer-agnostic surface tests. A new test file,
surface_context_lost_test.dart, has been added to verify the context
loss and recovery behavior across all supported renderers, ensuring the
new architecture is robust and reliable.

## Pre-launch Checklist

- [x] I read the [Contributor Guide] and followed the process outlined
there for submitting PRs.
- [x] I read the [Tree Hygiene] wiki page, which explains my
responsibilities.
- [x] I read and followed the [Flutter Style Guide], including [Features
we expect every widget to implement].
- [x] I signed the [CLA].
- [x] I listed at least one issue that this PR fixes in the description
above.
- [x] I updated/added relevant documentation (doc comments with `///`).
- [x] I added new tests to check the change I am making, or this PR is
[test-exempt].
- [x] I followed the [breaking change policy] and added [Data Driven
Fixes] where supported.
- [x] All existing and new tests are passing.

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https://github.com/flutter/flutter/blob/main/docs/contributing/Data-driven-Fixes.md

<!-- end_revert_body -->

Co-authored-by: auto-submit[bot] <flutter-engprod-team@google.com>
2025-12-20 01:03:29 +00:00
Harry Terkelsen
effb2e1ac1
[reland] Unify canvas creation and Surface code in Skwasm and CanvasKit (#179473)
This PR introduces a significant refactoring of the web engine's
rendering layer by unifying the Surface and Rasterizer implementations.
These components have been moved from being renderer-specific to a
generic compositing directory, making the architecture more modular and
easier to maintain. The rasterizers are now renderer-agnostic and are
provided with renderer-specific surface factories via dependency
injection. A new CanvasProvider abstraction has also been introduced to
manage the lifecycle of the underlying canvas elements.

A key outcome of this work is that the Skwasm backend now correctly
handles WebGL context loss events. This was achieved by refactoring
SkwasmSurface to allow the Dart side to manage the OffscreenCanvas
lifecycle. A communication channel between the main thread and the web
worker is now used to gracefully handle context loss and recovery. This
effort also included fixing several related bugs around surface sizing,
resource cleanup, and callback handling in multi-surface scenarios.

To validate these changes, new testing APIs have been added to allow for
the creation of renderer-agnostic surface tests. A new test file,
surface_context_lost_test.dart, has been added to verify the context
loss and recovery behavior across all supported renderers, ensuring the
new architecture is robust and reliable.

## Pre-launch Checklist

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2025-12-19 22:27:25 +00:00
Matthew Kosarek
a214a356a4
Fix an issue where the semantics announce event may be encoded as either an int32_t or an int64_t depending on its value (#180071)
fixes https://github.com/flutter/flutter/issues/179563

## What's new?
- The viewId on the announce semantics event may be either an int32 or
an int64, depending on what the codec perceives is best
- We should parse either one of them on the Win32 side of things

## Pre-launch Checklist

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[test-exempt].
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2025-12-19 19:36:36 +00:00
Ben Konyi
adfcf515fd
[ Web ] Pass --enable-experimental-ffi when compiling WASM tests (#180127)
The CFE will start treating unsupported library imports as errors in an
upcoming change (see https://github.com/dart-lang/sdk/issues/62125)
which will cause web engine compilation tests to fail without the
`--enable-experimental-ffi` flag.

This change passes `--enable-experimental-ffi` to `dart2wasm` in
preparation for this change in behavior.
2025-12-19 19:26:20 +00:00
richardexfo
a38f2f3fe6
Set text input purpose and hints on Linux platform (#180013)
For GTK+3 the purpose and hints of a Text Input are set through
properties of the Input Method g_object. The properties have to be
extracted from the inputType configuration.
This affects virtual keyboards on Linux.  


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2025-12-19 15:20:58 +00:00
gaaclarke
9c47d57dbb
Fix rotated image filter shader (#180027)
fixes https://github.com/flutter/flutter/issues/179918

This blocks us from rerasterizing if there is a rotation on the
imagefilter being drawn. This restores the behavior before
c089837469
while keeping the golden introduced in that pr working.

## Pre-launch Checklist

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2025-12-18 23:04:55 +00:00
chunhtai
420a32438c
wires up SetSemanticsTreeEnabled to android accessibility bridge (#177954)
<!--
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Before the change, the bridge only listens to updateSemantics when it
receives signal from the OS

After the change, the bridge always listens to updateSemantics, but will
clear out caches when SetSemanticsTreeEnabled is called with false

## Pre-launch Checklist

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---------

Co-authored-by: Matt Boetger <matt.boetger@gmail.com>
2025-12-18 21:56:40 +00:00
gaaclarke
5632701286
Moved high bitrate texture tests to engine (#179906)
This adds a few goldens where skia supports the file format. This is a
bit more scalable and direct than managing integration tests.

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2025-12-18 17:04:34 +00:00
Mohellebi abdessalem
052435ce7b
Remove unnecessary @RequiresApi annotations in FlutterView.java (#180051)
after #175508 has Landed some of these warnings started to appear:
<img width="471" height="234" alt="save_0"
src="https://github.com/user-attachments/assets/f3ef3e61-861e-456e-a7ec-f2315db742bc"
/>

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2025-12-18 16:32:50 +00:00
Matt Boetger
103dfa6c35
Revert "Revert "Android implementation of content sizing"" (#179753)
Reverts flutter/flutter#179698

Relands Content Sizing

Android Embedder implementation of content sizing.

Fixes: https://github.com/flutter/flutter/issues/149033
2025-12-17 22:29:38 +00:00
Gray Mackall
ef3dbceed2
Modify the create_cipd_packages.sh script to allow uploading multiple build-tools versions, and update to new bundle (#179963)
1. modifies the script slightly to allow passing in multiple versions
for a given element
2. updates to build tools 36.1.0, and adds 35.0.0 and 34.0.0
3. also adds cmake to the list, version 3.22.1, as that downloaded in
our ci currently
4. changes ci yaml and deps file accordingly

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---------

Co-authored-by: Gray Mackall <mackall@google.com>
2025-12-17 18:14:14 +00:00