909 Commits

Author SHA1 Message Date
chunhtai
1d85de0fc8
Introduce caching mechanism during compile semantics tree monorepo and formatted version (#161195)
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old pr: https://github.com/flutter/flutter/pull/150394

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2025-02-06 03:08:23 +00:00
Mouad Debbar
a612fda649
[web] Unskip some paragraph tests that are passing now (#162537)
Closes https://github.com/flutter/flutter/issues/83129
Closes https://github.com/flutter/flutter/issues/61020
Closes https://github.com/flutter/flutter/issues/61021
2025-02-03 20:18:01 +00:00
Mouad Debbar
3755fd1f6e
[web] Remove HTML renderer from framework tests (#162038)
- Cleanup many HTML special cases and skips in framework tests.
- Update some dartdocs that referred to the HTML renderer.

For reviewers: it may help if you set `Hide whitespace` to true in
Github. It will help you skip through all the formatting/indentation
changes.
2025-01-24 21:33:27 +00:00
Nate Wilson
06c3c93d72
const AnimationStyle (#160564)
[**AnimationStyle**](https://main-api.flutter.dev/flutter/animation/AnimationStyle-class.html)
is an
[`@immutable`](https://main-api.flutter.dev/flutter/meta/immutable-constant.html)
class with all `final` fields.

This pull request gives it a `const` constructor.

<br>

related: #160563
2025-01-22 21:52:11 +00:00
LongCatIsLooong
4115a78d2c
Make PipelineOwner a base class (#161789)
Such that nobody `implements` it. Currently it has private APIs used by
the `RenderObject` class (e.g., the dirty lists). If someone were to
implement a `PipelineOwner` outside of object.dart, they will get a
runtime `noSuchMethod` crash since they won't be able to provide those
private APIs and RenderObjects actually expect those APIs to exist.

Will be slow to update/respond due to extremely spotty internet :(

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2025-01-21 01:46:25 +00:00
Michael Goderbauer
9cab4ffee1
Use wildcards (#161548)
https://dart.dev/language/pattern-types#wildcard
2025-01-14 05:13:41 +00:00
Michael Goderbauer
5491c8c146
Auto-format Framework (#160545)
This auto-formats all *.dart files in the repository outside of the
`engine` subdirectory and enforces that these files stay formatted with
a presubmit check.

**Reviewers:** Please carefully review all the commits except for the
one titled "formatted". The "formatted" commit was auto-generated by
running `dev/tools/format.sh -a -f`. The other commits were hand-crafted
to prepare the repo for the formatting change. I recommend reviewing the
commits one-by-one via the "Commits" tab and avoiding Github's "Files
changed" tab as it will likely slow down your browser because of the
size of this PR.

---------

Co-authored-by: Kate Lovett <katelovett@google.com>
Co-authored-by: LongCatIsLooong <31859944+LongCatIsLooong@users.noreply.github.com>
2024-12-19 20:06:21 +00:00
Michael Goderbauer
8fee7cb832
Adjust ignores for 'dart format' (#160382)
When running `dart format` over these lines the `// ignore` ended up on
a line where it wasn't properly ignoring the lint. This adjusts the
placement of `// ignore`s so they will continue to ignore the right
thing even after the code is auto formatted.

I am hoping that if we do this now the large PR that formats the entire
repo will go in smoother without manual intervention.
2024-12-16 22:01:25 +00:00
yim
7814641bd8
fix fade_transition issue (#157663)
Fixes: #157312

A simpler way to reproduce this issue:
```dart
import 'package:flutter/material.dart';

void main() {
  runApp(MyApp());
}

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

  @override
  State<MyApp> createState() => _MyAppState();
}

class _MyAppState extends State<MyApp> with SingleTickerProviderStateMixin {
  late AnimationController controller = AnimationController(
    duration: const Duration(seconds: 2),
    value: 1,
    vsync: this,
  );
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        body: Center(
          child: FadeTransition(
            opacity: controller,
            child: Builder(
              builder: (context) {
                return GestureDetector(
                  onTap: () {
                    controller.value = 0.5;
                    context.findRenderObject()?.markNeedsPaint();
                    controller.value = 0;
                  },
                  child: Text("Click"),
                );
              },
            ),
          ),
        ),
      ),
    );
  }
}

```
The main reason is that updating the opacity with
`markNeedsCompositedLayerUpdate` followed by `markNeedsPaint` causes it
to be added to `owner!._nodesNeedingPaint` twice.

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---------

Co-authored-by: Nate Wilson <nathan.wilson1232@gmail.com>
Co-authored-by: Tong Mu <dkwingsmt@users.noreply.github.com>
2024-12-11 00:54:07 +00:00
chunhtai
a893157f1e
Revert "Framework sends a11y message when enabling semantics (#159163)" (#160039)
This reverts commit 1a2d6a30bca2476c91dd01cd67405443cfc251d3.

This is a straight revert as we are pivot away from using message
channel, instead we will be adding api to dart:ui.
See https://github.com/flutter/engine/pull/56691

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2024-12-10 21:24:09 +00:00
Renzo Olivares
0737dbfcb6
iOS Selection Handle Improvements (#157815)
Fixes #110306 


https://github.com/user-attachments/assets/d0a20ae9-912c-4ddc-bd6a-a21409468078

This change:
* Allows selection handles on iOS to swap with each other when inverting
on `TextField`.
* Allows selection handles to visually collapse when inverting on
`SelectableRegion`/`SelectionArea`, previously they showed both left and
right handles when collapsed, instead of the collapsed handles.
* Adds a border to the CupertinoTextMagnifier, the same color as the
selection handles to match native iOS behavior.

`SelectionOverlay`:
* Previously would build an empty end handle when the selection was
collapsed. Now it builds an empty end handle when the selection is being
collapsed and the start handle is being dragged, and when the selection
is collapsed and no handle is being dragged.
* Hides start handle when the selection is being collapsed and the end
handle is being dragged.
* Keeps the handles from overlapping.

`TextSelectionOverlay`:
* Removes guards against swapping handles for iOS and macOS.
* Tracks `_oppositeEdge` used to maintain selection as handles invert.

`RenderParagraph`:
* Send collapsed selection handle state in `SelectionGeometry`,
previously we wouldn't so the collapsed state would show both start and
end handles.

`CupertinoTextMagnifier`:
* Inherit border color from parent
`CupertinoTheme.of(context).primaryColor`. Selection handles also uses
`primaryColor`.

## Pre-launch Checklist

- [x] I read the [Contributor Guide] and followed the process outlined
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---------

Co-authored-by: Renzo Olivares <roliv@google.com>
2024-12-09 20:54:04 +00:00
PurplePolyhedron
a0ba2decab
improve ContainerRenderObjectMixin error message when parentData is not set up properly (#157846)
Previously when subclassing `MultiChildRenderObjectWidget` and
`RenderObject with ContainerRenderObjectMixin`, if one forgot to set up
parent data, the error message does not give hint that `setupParentData`
need to be implemented by the `RenderObject`.

This PR add assertion that check parent data type before type cast and
give hints if it is was not properly set.
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2024-11-29 08:20:31 +00:00
chunhtai
1a2d6a30bc
Framework sends a11y message when enabling semantics (#159163)
fixes https://github.com/flutter/flutter/issues/158399

engine ios https://github.com/flutter/engine/pull/56691

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2024-11-25 21:21:04 +00:00
Parker Lougheed
a0a82f2821
Fix a few typos in framework code and doc comments (#157248) 2024-10-21 19:25:52 +00:00
gaaclarke
203f11647f
Update color assertions (#154752)
issue: https://github.com/flutter/flutter/issues/127855
This is a forward fix to help
https://github.com/flutter/engine/pull/54981 land.

It makes the following changes:
1) Removes hardcoded `Color.toString()` assumptions in asserts
1) Switches some lerp tests to use numbers that are more friendly to
uint8_t and floating point numbers
1) implements custom matchers for color
1) removes word wrapping for some asserts since it makes them fragile to
changes in `Color.toString()` invocations

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2024-09-10 15:32:40 -07:00
Taha Tesser
00ef750d28
[Reland] Introduce double Flex.spacing parameter for Row/Column spacing (#152890)
Relands https://github.com/flutter/flutter/pull/152472 (Fixed error causing message test, maybe by https://github.com/flutter/flutter/pull/152501)

---

fixes [add spacing parameter to Column and Row](https://github.com/flutter/flutter/issues/55378)

### `Column.spacing` Code sample

<details>
<summary>expand to view the code sample</summary> 

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

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

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

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      debugShowCheckedModeBanner: false,
      home: Scaffold(
        backgroundColor: Colors.black,
        body: Center(
          child: Padding(
            padding: const EdgeInsets.all(16.0),
            child: DecoratedBox(
              decoration: BoxDecoration(
                  border: Border.all(
                color: Colors.amber,
              )),
              child: const Row(
                mainAxisAlignment: MainAxisAlignment.spaceEvenly,
                children: <Widget>[
                  Column(
                    spacing: 40.0,
                    // ignore: avoid_redundant_argument_values
                    mainAxisAlignment: MainAxisAlignment.start,
                    children: <Widget>[
                      ColoredBox(
                        color: Color(0xffff0000),
                        child: SizedBox(
                          width: 50.0,
                          height: 75.0,
                          child: Align(
                            alignment: Alignment.topCenter,
                            child: Text(
                              'RED',
                              style: TextStyle(color: Colors.white),
                            ),
                          ),
                        ),
                      ),
                      ColoredBox(
                        color: Color(0xff00ff00),
                        child: SizedBox(
                          width: 50.0,
                          height: 75.0,
                          child: Center(
                            child: Text(
                              'GREEN',
                              style: TextStyle(color: Colors.black),
                            ),
                          ),
                        ),
                      ),
                      ColoredBox(
                        color: Color(0xff0000ff),
                        child: SizedBox(
                          width: 50.0,
                          height: 75.0,
                          child: Align(
                            alignment: Alignment.bottomCenter,
                            child: Text(
                              'BLUE',
                              style: TextStyle(color: Colors.white),
                            ),
                          ),
                        ),
                      ),
                    ],
                  ),
                  Column(
                    spacing: 40.0,
                    mainAxisAlignment: MainAxisAlignment.center,
                    children: <Widget>[
                      ColoredBox(
                        color: Color(0xffff0000),
                        child: SizedBox(
                          width: 50.0,
                          height: 75.0,
                          child: Align(
                            alignment: Alignment.topCenter,
                            child: Text(
                              'RED',
                              style: TextStyle(color: Colors.white),
                            ),
                          ),
                        ),
                      ),
                      ColoredBox(
                        color: Color(0xff00ff00),
                        child: SizedBox(
                          width: 50.0,
                          height: 75.0,
                          child: Center(
                            child: Text(
                              'GREEN',
                              style: TextStyle(color: Colors.black),
                            ),
                          ),
                        ),
                      ),
                      ColoredBox(
                        color: Color(0xff0000ff),
                        child: SizedBox(
                          width: 50.0,
                          height: 75.0,
                          child: Align(
                            alignment: Alignment.bottomCenter,
                            child: Text(
                              'BLUE',
                              style: TextStyle(color: Colors.white),
                            ),
                          ),
                        ),
                      ),
                    ],
                  ),
                  Column(
                    spacing: 40.0,
                    mainAxisAlignment: MainAxisAlignment.end,
                    children: <Widget>[
                      ColoredBox(
                        color: Color(0xffff0000),
                        child: SizedBox(
                          width: 50.0,
                          height: 75.0,
                          child: Align(
                            alignment: Alignment.topCenter,
                            child: Text(
                              'RED',
                              style: TextStyle(color: Colors.white),
                            ),
                          ),
                        ),
                      ),
                      ColoredBox(
                        color: Color(0xff00ff00),
                        child: SizedBox(
                          width: 50.0,
                          height: 75.0,
                          child: Center(
                            child: Text(
                              'GREEN',
                              style: TextStyle(color: Colors.black),
                            ),
                          ),
                        ),
                      ),
                      ColoredBox(
                        color: Color(0xff0000ff),
                        child: SizedBox(
                          width: 50.0,
                          height: 75.0,
                          child: Align(
                            alignment: Alignment.bottomCenter,
                            child: Text(
                              'BLUE',
                              style: TextStyle(color: Colors.white),
                            ),
                          ),
                        ),
                      ),
                    ],
                  ),
                  Column(
                    spacing: 40.0,
                    mainAxisAlignment: MainAxisAlignment.spaceBetween,
                    children: <Widget>[
                      ColoredBox(
                        color: Color(0xffff0000),
                        child: SizedBox(
                          width: 50.0,
                          height: 75.0,
                          child: Align(
                            alignment: Alignment.topCenter,
                            child: Text(
                              'RED',
                              style: TextStyle(color: Colors.white),
                            ),
                          ),
                        ),
                      ),
                      ColoredBox(
                        color: Color(0xff00ff00),
                        child: SizedBox(
                          width: 50.0,
                          height: 75.0,
                          child: Center(
                            child: Text(
                              'GREEN',
                              style: TextStyle(color: Colors.black),
                            ),
                          ),
                        ),
                      ),
                      ColoredBox(
                        color: Color(0xff0000ff),
                        child: SizedBox(
                          width: 50.0,
                          height: 75.0,
                          child: Align(
                            alignment: Alignment.bottomCenter,
                            child: Text(
                              'BLUE',
                              style: TextStyle(color: Colors.white),
                            ),
                          ),
                        ),
                      ),
                    ],
                  ),
                  Column(
                    spacing: 40.0,
                    mainAxisAlignment: MainAxisAlignment.spaceAround,
                    children: <Widget>[
                      ColoredBox(
                        color: Color(0xffff0000),
                        child: SizedBox(
                          width: 50.0,
                          height: 75.0,
                          child: Align(
                            alignment: Alignment.topCenter,
                            child: Text(
                              'RED',
                              style: TextStyle(color: Colors.white),
                            ),
                          ),
                        ),
                      ),
                      ColoredBox(
                        color: Color(0xff00ff00),
                        child: SizedBox(
                          width: 50.0,
                          height: 75.0,
                          child: Center(
                            child: Text(
                              'GREEN',
                              style: TextStyle(color: Colors.black),
                            ),
                          ),
                        ),
                      ),
                      ColoredBox(
                        color: Color(0xff0000ff),
                        child: SizedBox(
                          width: 50.0,
                          height: 75.0,
                          child: Align(
                            alignment: Alignment.bottomCenter,
                            child: Text(
                              'BLUE',
                              style: TextStyle(color: Colors.white),
                            ),
                          ),
                        ),
                      ),
                    ],
                  ),
                  Column(
                    spacing: 40.0,
                    mainAxisAlignment: MainAxisAlignment.spaceEvenly,
                    children: <Widget>[
                      ColoredBox(
                        color: Color(0xffff0000),
                        child: SizedBox(
                          width: 50.0,
                          height: 75.0,
                          child: Align(
                            alignment: Alignment.topCenter,
                            child: Text(
                              'RED',
                              style: TextStyle(color: Colors.white),
                            ),
                          ),
                        ),
                      ),
                      ColoredBox(
                        color: Color(0xff00ff00),
                        child: SizedBox(
                          width: 50.0,
                          height: 75.0,
                          child: Center(
                            child: Text(
                              'GREEN',
                              style: TextStyle(color: Colors.black),
                            ),
                          ),
                        ),
                      ),
                      ColoredBox(
                        color: Color(0xff0000ff),
                        child: SizedBox(
                          width: 50.0,
                          height: 75.0,
                          child: Align(
                            alignment: Alignment.bottomCenter,
                            child: Text(
                              'BLUE',
                              style: TextStyle(color: Colors.white),
                            ),
                          ),
                        ),
                      ),
                    ],
                  ),
                ],
              ),
            ),
          ),
        ),
      ),
    );
  }
}
```

</details>

### Preview

<img width="1072" alt="Screenshot 2024-07-30 at 15 40 59" src="https://github.com/user-attachments/assets/14f21091-9e46-4a58-8552-1379f4ba9216">

### `Row.spacing` Code sample

<details>
<summary>expand to view the code sample</summary> 

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

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

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

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      debugShowCheckedModeBanner: false,
      home: Scaffold(
        backgroundColor: Colors.black,
        body: Center(
          child: Padding(
            padding: const EdgeInsets.all(16.0),
            child: DecoratedBox(
              decoration: BoxDecoration(
                  border: Border.all(
                color: Colors.amber,
              )),
              child: const Column(
                mainAxisAlignment: MainAxisAlignment.spaceEvenly,
                children: <Widget>[
                  Row(
                    spacing: 40.0,
                    // ignore: avoid_redundant_argument_values
                    mainAxisAlignment: MainAxisAlignment.start,
                    children: <Widget>[
                      ColoredBox(
                        color: Color(0xffff0000),
                        child: SizedBox(
                          width: 50.0,
                          height: 75.0,
                          child: Align(
                            alignment: Alignment.centerLeft,
                            child: Text(
                              'RED',
                              style: TextStyle(color: Colors.white),
                            ),
                          ),
                        ),
                      ),
                      ColoredBox(
                        color: Color(0xff00ff00),
                        child: SizedBox(
                          width: 50.0,
                          height: 75.0,
                          child: Center(
                            child: Text(
                              'GREEN',
                              style: TextStyle(color: Colors.black),
                            ),
                          ),
                        ),
                      ),
                      ColoredBox(
                        color: Color(0xff0000ff),
                        child: SizedBox(
                          width: 50.0,
                          height: 75.0,
                          child: Align(
                            alignment: Alignment.centerRight,
                            child: Text(
                              'BLUE',
                              style: TextStyle(color: Colors.white),
                            ),
                          ),
                        ),
                      ),
                    ],
                  ),
                  Row(
                    spacing: 40.0,
                    mainAxisAlignment: MainAxisAlignment.center,
                    children: <Widget>[
                      ColoredBox(
                        color: Color(0xffff0000),
                        child: SizedBox(
                          width: 50.0,
                          height: 75.0,
                          child: Align(
                            alignment: Alignment.centerLeft,
                            child: Text(
                              'RED',
                              style: TextStyle(color: Colors.white),
                            ),
                          ),
                        ),
                      ),
                      ColoredBox(
                        color: Color(0xff00ff00),
                        child: SizedBox(
                          width: 50.0,
                          height: 75.0,
                          child: Center(
                            child: Text(
                              'GREEN',
                              style: TextStyle(color: Colors.black),
                            ),
                          ),
                        ),
                      ),
                      ColoredBox(
                        color: Color(0xff0000ff),
                        child: SizedBox(
                          width: 50.0,
                          height: 75.0,
                          child: Align(
                            alignment: Alignment.centerRight,
                            child: Text(
                              'BLUE',
                              style: TextStyle(color: Colors.white),
                            ),
                          ),
                        ),
                      ),
                    ],
                  ),
                  Row(
                    spacing: 40.0,
                    mainAxisAlignment: MainAxisAlignment.end,
                    children: <Widget>[
                      ColoredBox(
                        color: Color(0xffff0000),
                        child: SizedBox(
                          width: 50.0,
                          height: 75.0,
                          child: Align(
                            alignment: Alignment.centerLeft,
                            child: Text(
                              'RED',
                              style: TextStyle(color: Colors.white),
                            ),
                          ),
                        ),
                      ),
                      ColoredBox(
                        color: Color(0xff00ff00),
                        child: SizedBox(
                          width: 50.0,
                          height: 75.0,
                          child: Center(
                            child: Text(
                              'GREEN',
                              style: TextStyle(color: Colors.black),
                            ),
                          ),
                        ),
                      ),
                      ColoredBox(
                        color: Color(0xff0000ff),
                        child: SizedBox(
                          width: 50.0,
                          height: 75.0,
                          child: Align(
                            alignment: Alignment.centerRight,
                            child: Text(
                              'BLUE',
                              style: TextStyle(color: Colors.white),
                            ),
                          ),
                        ),
                      ),
                    ],
                  ),
                  Row(
                    spacing: 40.0,
                    mainAxisAlignment: MainAxisAlignment.spaceBetween,
                    children: <Widget>[
                      ColoredBox(
                        color: Color(0xffff0000),
                        child: SizedBox(
                          width: 50.0,
                          height: 75.0,
                          child: Align(
                            alignment: Alignment.centerLeft,
                            child: Text(
                              'RED',
                              style: TextStyle(color: Colors.white),
                            ),
                          ),
                        ),
                      ),
                      ColoredBox(
                        color: Color(0xff00ff00),
                        child: SizedBox(
                          width: 50.0,
                          height: 75.0,
                          child: Center(
                            child: Text(
                              'GREEN',
                              style: TextStyle(color: Colors.black),
                            ),
                          ),
                        ),
                      ),
                      ColoredBox(
                        color: Color(0xff0000ff),
                        child: SizedBox(
                          width: 50.0,
                          height: 75.0,
                          child: Align(
                            alignment: Alignment.centerRight,
                            child: Text(
                              'BLUE',
                              style: TextStyle(color: Colors.white),
                            ),
                          ),
                        ),
                      ),
                    ],
                  ),
                  Row(
                    spacing: 40.0,
                    mainAxisAlignment: MainAxisAlignment.spaceAround,
                    children: <Widget>[
                      ColoredBox(
                        color: Color(0xffff0000),
                        child: SizedBox(
                          width: 50.0,
                          height: 75.0,
                          child: Align(
                            alignment: Alignment.centerLeft,
                            child: Text(
                              'RED',
                              style: TextStyle(color: Colors.white),
                            ),
                          ),
                        ),
                      ),
                      ColoredBox(
                        color: Color(0xff00ff00),
                        child: SizedBox(
                          width: 50.0,
                          height: 75.0,
                          child: Center(
                            child: Text(
                              'GREEN',
                              style: TextStyle(color: Colors.black),
                            ),
                          ),
                        ),
                      ),
                      ColoredBox(
                        color: Color(0xff0000ff),
                        child: SizedBox(
                          width: 50.0,
                          height: 75.0,
                          child: Align(
                            alignment: Alignment.centerRight,
                            child: Text(
                              'BLUE',
                              style: TextStyle(color: Colors.white),
                            ),
                          ),
                        ),
                      ),
                    ],
                  ),
                  Row(
                    spacing: 40.0,
                    mainAxisAlignment: MainAxisAlignment.spaceEvenly,
                    children: <Widget>[
                      ColoredBox(
                        color: Color(0xffff0000),
                        child: SizedBox(
                          width: 50.0,
                          height: 75.0,
                          child: Align(
                            alignment: Alignment.centerLeft,
                            child: Text(
                              'RED',
                              style: TextStyle(color: Colors.white),
                            ),
                          ),
                        ),
                      ),
                      ColoredBox(
                        color: Color(0xff00ff00),
                        child: SizedBox(
                          width: 50.0,
                          height: 75.0,
                          child: Center(
                            child: Text(
                              'GREEN',
                              style: TextStyle(color: Colors.black),
                            ),
                          ),
                        ),
                      ),
                      ColoredBox(
                        color: Color(0xff0000ff),
                        child: SizedBox(
                          width: 50.0,
                          height: 75.0,
                          child: Align(
                            child: Text(
                              'BLUE',
                              style: TextStyle(color: Colors.white),
                            ),
                          ),
                        ),
                      ),
                    ],
                  ),
                ],
              ),
            ),
          ),
        ),
      ),
    );
  }
}

```

</details>

### Preview

<img width="1072" alt="Screenshot 2024-07-30 at 15 39 42" src="https://github.com/user-attachments/assets/717e9f5e-a491-4853-ba74-e72ec7493363">
2024-08-05 23:04:50 +00:00
auto-submit[bot]
463a1532b3
Reverts "Introduce double Flex.spacing parameter for Row/Column spacing (#152472)" (#152885)
Reverts: flutter/flutter#152472
Initiated by: goderbauer
Reason for reverting: Tests are failing, e.g. https://ci.chromium.org/ui/p/flutter/builders/prod/Mac%20tool_integration_tests_5_5/127/overview
Original PR Author: TahaTesser

Reviewed By: {Piinks, goderbauer, Hixie}

This change reverts the following previous change:
fixes [add spacing parameter to Column and Row](https://github.com/flutter/flutter/issues/55378)

### `Column.spacing` Code sample

<details>
<summary>expand to view the code sample</summary> 

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

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

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

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      debugShowCheckedModeBanner: false,
      home: Scaffold(
        backgroundColor: Colors.black,
        body: Center(
          child: Padding(
            padding: const EdgeInsets.all(16.0),
            child: DecoratedBox(
              decoration: BoxDecoration(
                  border: Border.all(
                color: Colors.amber,
              )),
              child: const Row(
                mainAxisAlignment: MainAxisAlignment.spaceEvenly,
                children: <Widget>[
                  Column(
                    spacing: 40.0,
                    // ignore: avoid_redundant_argument_values
                    mainAxisAlignment: MainAxisAlignment.start,
                    children: <Widget>[
                      ColoredBox(
                        color: Color(0xffff0000),
                        child: SizedBox(
                          width: 50.0,
                          height: 75.0,
                          child: Align(
                            alignment: Alignment.topCenter,
                            child: Text(
                              'RED',
                              style: TextStyle(color: Colors.white),
                            ),
                          ),
                        ),
                      ),
                      ColoredBox(
                        color: Color(0xff00ff00),
                        child: SizedBox(
                          width: 50.0,
                          height: 75.0,
                          child: Center(
                            child: Text(
                              'GREEN',
                              style: TextStyle(color: Colors.black),
                            ),
                          ),
                        ),
                      ),
                      ColoredBox(
                        color: Color(0xff0000ff),
                        child: SizedBox(
                          width: 50.0,
                          height: 75.0,
                          child: Align(
                            alignment: Alignment.bottomCenter,
                            child: Text(
                              'BLUE',
                              style: TextStyle(color: Colors.white),
                            ),
                          ),
                        ),
                      ),
                    ],
                  ),
                  Column(
                    spacing: 40.0,
                    mainAxisAlignment: MainAxisAlignment.center,
                    children: <Widget>[
                      ColoredBox(
                        color: Color(0xffff0000),
                        child: SizedBox(
                          width: 50.0,
                          height: 75.0,
                          child: Align(
                            alignment: Alignment.topCenter,
                            child: Text(
                              'RED',
                              style: TextStyle(color: Colors.white),
                            ),
                          ),
                        ),
                      ),
                      ColoredBox(
                        color: Color(0xff00ff00),
                        child: SizedBox(
                          width: 50.0,
                          height: 75.0,
                          child: Center(
                            child: Text(
                              'GREEN',
                              style: TextStyle(color: Colors.black),
                            ),
                          ),
                        ),
                      ),
                      ColoredBox(
                        color: Color(0xff0000ff),
                        child: SizedBox(
                          width: 50.0,
                          height: 75.0,
                          child: Align(
                            alignment: Alignment.bottomCenter,
                            child: Text(
                              'BLUE',
                              style: TextStyle(color: Colors.white),
                            ),
                          ),
                        ),
                      ),
                    ],
                  ),
                  Column(
                    spacing: 40.0,
                    mainAxisAlignment: MainAxisAlignment.end,
                    children: <Widget>[
                      ColoredBox(
                        color: Color(0xffff0000),
                        child: SizedBox(
                          width: 50.0,
                          height: 75.0,
                          child: Align(
                            alignment: Alignment.topCenter,
                            child: Text(
                              'RED',
                              style: TextStyle(color: Colors.white),
                            ),
                          ),
                        ),
                      ),
                      ColoredBox(
                        color: Color(0xff00ff00),
                        child: SizedBox(
                          width: 50.0,
                          height: 75.0,
                          child: Center(
                            child: Text(
                              'GREEN',
                              style: TextStyle(color: Colors.black),
                            ),
                          ),
                        ),
                      ),
                      ColoredBox(
                        color: Color(0xff0000ff),
                        child: SizedBox(
                          width: 50.0,
                          height: 75.0,
                          child: Align(
                            alignment: Alignment.bottomCenter,
                            child: Text(
                              'BLUE',
                              style: TextStyle(color: Colors.white),
                            ),
                          ),
                        ),
                      ),
                    ],
                  ),
                  Column(
                    spacing: 40.0,
                    mainAxisAlignment: MainAxisAlignment.spaceBetween,
                    children: <Widget>[
                      ColoredBox(
                        color: Color(0xffff0000),
                        child: SizedBox(
                          width: 50.0,
                          height: 75.0,
                          child: Align(
                            alignment: Alignment.topCenter,
                            child: Text(
                              'RED',
                              style: TextStyle(color: Colors.white),
                            ),
                          ),
                        ),
                      ),
                      ColoredBox(
                        color: Color(0xff00ff00),
                        child: SizedBox(
                          width: 50.0,
                          height: 75.0,
                          child: Center(
                            child: Text(
                              'GREEN',
                              style: TextStyle(color: Colors.black),
                            ),
                          ),
                        ),
                      ),
                      ColoredBox(
                        color: Color(0xff0000ff),
                        child: SizedBox(
                          width: 50.0,
                          height: 75.0,
                          child: Align(
                            alignment: Alignment.bottomCenter,
                            child: Text(
                              'BLUE',
                              style: TextStyle(color: Colors.white),
                            ),
                          ),
                        ),
                      ),
                    ],
                  ),
                  Column(
                    spacing: 40.0,
                    mainAxisAlignment: MainAxisAlignment.spaceAround,
                    children: <Widget>[
                      ColoredBox(
                        color: Color(0xffff0000),
                        child: SizedBox(
                          width: 50.0,
                          height: 75.0,
                          child: Align(
                            alignment: Alignment.topCenter,
                            child: Text(
                              'RED',
                              style: TextStyle(color: Colors.white),
                            ),
                          ),
                        ),
                      ),
                      ColoredBox(
                        color: Color(0xff00ff00),
                        child: SizedBox(
                          width: 50.0,
                          height: 75.0,
                          child: Center(
                            child: Text(
                              'GREEN',
                              style: TextStyle(color: Colors.black),
                            ),
                          ),
                        ),
                      ),
                      ColoredBox(
                        color: Color(0xff0000ff),
                        child: SizedBox(
                          width: 50.0,
                          height: 75.0,
                          child: Align(
                            alignment: Alignment.bottomCenter,
                            child: Text(
                              'BLUE',
                              style: TextStyle(color: Colors.white),
                            ),
                          ),
                        ),
                      ),
                    ],
                  ),
                  Column(
                    spacing: 40.0,
                    mainAxisAlignment: MainAxisAlignment.spaceEvenly,
                    children: <Widget>[
                      ColoredBox(
                        color: Color(0xffff0000),
                        child: SizedBox(
                          width: 50.0,
                          height: 75.0,
                          child: Align(
                            alignment: Alignment.topCenter,
                            child: Text(
                              'RED',
                              style: TextStyle(color: Colors.white),
                            ),
                          ),
                        ),
                      ),
                      ColoredBox(
                        color: Color(0xff00ff00),
                        child: SizedBox(
                          width: 50.0,
                          height: 75.0,
                          child: Center(
                            child: Text(
                              'GREEN',
                              style: TextStyle(color: Colors.black),
                            ),
                          ),
                        ),
                      ),
                      ColoredBox(
                        color: Color(0xff0000ff),
                        child: SizedBox(
                          width: 50.0,
                          height: 75.0,
                          child: Align(
                            alignment: Alignment.bottomCenter,
                            child: Text(
                              'BLUE',
                              style: TextStyle(color: Colors.white),
                            ),
                          ),
                        ),
                      ),
                    ],
                  ),
                ],
              ),
            ),
          ),
        ),
      ),
    );
  }
}
```

</details>

### Preview

<img width="1072" alt="Screenshot 2024-07-30 at 15 40 59" src="https://github.com/user-attachments/assets/14f21091-9e46-4a58-8552-1379f4ba9216">

### `Row.spacing` Code sample

<details>
<summary>expand to view the code sample</summary> 

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

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

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

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      debugShowCheckedModeBanner: false,
      home: Scaffold(
        backgroundColor: Colors.black,
        body: Center(
          child: Padding(
            padding: const EdgeInsets.all(16.0),
            child: DecoratedBox(
              decoration: BoxDecoration(
                  border: Border.all(
                color: Colors.amber,
              )),
              child: const Column(
                mainAxisAlignment: MainAxisAlignment.spaceEvenly,
                children: <Widget>[
                  Row(
                    spacing: 40.0,
                    // ignore: avoid_redundant_argument_values
                    mainAxisAlignment: MainAxisAlignment.start,
                    children: <Widget>[
                      ColoredBox(
                        color: Color(0xffff0000),
                        child: SizedBox(
                          width: 50.0,
                          height: 75.0,
                          child: Align(
                            alignment: Alignment.centerLeft,
                            child: Text(
                              'RED',
                              style: TextStyle(color: Colors.white),
                            ),
                          ),
                        ),
                      ),
                      ColoredBox(
                        color: Color(0xff00ff00),
                        child: SizedBox(
                          width: 50.0,
                          height: 75.0,
                          child: Center(
                            child: Text(
                              'GREEN',
                              style: TextStyle(color: Colors.black),
                            ),
                          ),
                        ),
                      ),
                      ColoredBox(
                        color: Color(0xff0000ff),
                        child: SizedBox(
                          width: 50.0,
                          height: 75.0,
                          child: Align(
                            alignment: Alignment.centerRight,
                            child: Text(
                              'BLUE',
                              style: TextStyle(color: Colors.white),
                            ),
                          ),
                        ),
                      ),
                    ],
                  ),
                  Row(
                    spacing: 40.0,
                    mainAxisAlignment: MainAxisAlignment.center,
                    children: <Widget>[
                      ColoredBox(
                        color: Color(0xffff0000),
                        child: SizedBox(
                          width: 50.0,
                          height: 75.0,
                          child: Align(
                            alignment: Alignment.centerLeft,
                            child: Text(
                              'RED',
                              style: TextStyle(color: Colors.white),
                            ),
                          ),
                        ),
                      ),
                      ColoredBox(
                        color: Color(0xff00ff00),
                        child: SizedBox(
                          width: 50.0,
                          height: 75.0,
                          child: Center(
                            child: Text(
                              'GREEN',
                              style: TextStyle(color: Colors.black),
                            ),
                          ),
                        ),
                      ),
                      ColoredBox(
                        color: Color(0xff0000ff),
                        child: SizedBox(
                          width: 50.0,
                          height: 75.0,
                          child: Align(
                            alignment: Alignment.centerRight,
                            child: Text(
                              'BLUE',
                              style: TextStyle(color: Colors.white),
                            ),
                          ),
                        ),
                      ),
                    ],
                  ),
                  Row(
                    spacing: 40.0,
                    mainAxisAlignment: MainAxisAlignment.end,
                    children: <Widget>[
                      ColoredBox(
                        color: Color(0xffff0000),
                        child: SizedBox(
                          width: 50.0,
                          height: 75.0,
                          child: Align(
                            alignment: Alignment.centerLeft,
                            child: Text(
                              'RED',
                              style: TextStyle(color: Colors.white),
                            ),
                          ),
                        ),
                      ),
                      ColoredBox(
                        color: Color(0xff00ff00),
                        child: SizedBox(
                          width: 50.0,
                          height: 75.0,
                          child: Center(
                            child: Text(
                              'GREEN',
                              style: TextStyle(color: Colors.black),
                            ),
                          ),
                        ),
                      ),
                      ColoredBox(
                        color: Color(0xff0000ff),
                        child: SizedBox(
                          width: 50.0,
                          height: 75.0,
                          child: Align(
                            alignment: Alignment.centerRight,
                            child: Text(
                              'BLUE',
                              style: TextStyle(color: Colors.white),
                            ),
                          ),
                        ),
                      ),
                    ],
                  ),
                  Row(
                    spacing: 40.0,
                    mainAxisAlignment: MainAxisAlignment.spaceBetween,
                    children: <Widget>[
                      ColoredBox(
                        color: Color(0xffff0000),
                        child: SizedBox(
                          width: 50.0,
                          height: 75.0,
                          child: Align(
                            alignment: Alignment.centerLeft,
                            child: Text(
                              'RED',
                              style: TextStyle(color: Colors.white),
                            ),
                          ),
                        ),
                      ),
                      ColoredBox(
                        color: Color(0xff00ff00),
                        child: SizedBox(
                          width: 50.0,
                          height: 75.0,
                          child: Center(
                            child: Text(
                              'GREEN',
                              style: TextStyle(color: Colors.black),
                            ),
                          ),
                        ),
                      ),
                      ColoredBox(
                        color: Color(0xff0000ff),
                        child: SizedBox(
                          width: 50.0,
                          height: 75.0,
                          child: Align(
                            alignment: Alignment.centerRight,
                            child: Text(
                              'BLUE',
                              style: TextStyle(color: Colors.white),
                            ),
                          ),
                        ),
                      ),
                    ],
                  ),
                  Row(
                    spacing: 40.0,
                    mainAxisAlignment: MainAxisAlignment.spaceAround,
                    children: <Widget>[
                      ColoredBox(
                        color: Color(0xffff0000),
                        child: SizedBox(
                          width: 50.0,
                          height: 75.0,
                          child: Align(
                            alignment: Alignment.centerLeft,
                            child: Text(
                              'RED',
                              style: TextStyle(color: Colors.white),
                            ),
                          ),
                        ),
                      ),
                      ColoredBox(
                        color: Color(0xff00ff00),
                        child: SizedBox(
                          width: 50.0,
                          height: 75.0,
                          child: Center(
                            child: Text(
                              'GREEN',
                              style: TextStyle(color: Colors.black),
                            ),
                          ),
                        ),
                      ),
                      ColoredBox(
                        color: Color(0xff0000ff),
                        child: SizedBox(
                          width: 50.0,
                          height: 75.0,
                          child: Align(
                            alignment: Alignment.centerRight,
                            child: Text(
                              'BLUE',
                              style: TextStyle(color: Colors.white),
                            ),
                          ),
                        ),
                      ),
                    ],
                  ),
                  Row(
                    spacing: 40.0,
                    mainAxisAlignment: MainAxisAlignment.spaceEvenly,
                    children: <Widget>[
                      ColoredBox(
                        color: Color(0xffff0000),
                        child: SizedBox(
                          width: 50.0,
                          height: 75.0,
                          child: Align(
                            alignment: Alignment.centerLeft,
                            child: Text(
                              'RED',
                              style: TextStyle(color: Colors.white),
                            ),
                          ),
                        ),
                      ),
                      ColoredBox(
                        color: Color(0xff00ff00),
                        child: SizedBox(
                          width: 50.0,
                          height: 75.0,
                          child: Center(
                            child: Text(
                              'GREEN',
                              style: TextStyle(color: Colors.black),
                            ),
                          ),
                        ),
                      ),
                      ColoredBox(
                        color: Color(0xff0000ff),
                        child: SizedBox(
                          width: 50.0,
                          height: 75.0,
                          child: Align(
                            child: Text(
                              'BLUE',
                              style: TextStyle(color: Colors.white),
                            ),
                          ),
                        ),
                      ),
                    ],
                  ),
                ],
              ),
            ),
          ),
        ),
      ),
    );
  }
}

```

</details>

### Preview

<img width="1072" alt="Screenshot 2024-07-30 at 15 39 42" src="https://github.com/user-attachments/assets/717e9f5e-a491-4853-ba74-e72ec7493363">
2024-08-05 19:32:47 +00:00
Taha Tesser
48ecec16ee
Introduce double Flex.spacing parameter for Row/Column spacing (#152472)
fixes [add spacing parameter to Column and Row](https://github.com/flutter/flutter/issues/55378)

### `Column.spacing` Code sample

<details>
<summary>expand to view the code sample</summary> 

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

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

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

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      debugShowCheckedModeBanner: false,
      home: Scaffold(
        backgroundColor: Colors.black,
        body: Center(
          child: Padding(
            padding: const EdgeInsets.all(16.0),
            child: DecoratedBox(
              decoration: BoxDecoration(
                  border: Border.all(
                color: Colors.amber,
              )),
              child: const Row(
                mainAxisAlignment: MainAxisAlignment.spaceEvenly,
                children: <Widget>[
                  Column(
                    spacing: 40.0,
                    // ignore: avoid_redundant_argument_values
                    mainAxisAlignment: MainAxisAlignment.start,
                    children: <Widget>[
                      ColoredBox(
                        color: Color(0xffff0000),
                        child: SizedBox(
                          width: 50.0,
                          height: 75.0,
                          child: Align(
                            alignment: Alignment.topCenter,
                            child: Text(
                              'RED',
                              style: TextStyle(color: Colors.white),
                            ),
                          ),
                        ),
                      ),
                      ColoredBox(
                        color: Color(0xff00ff00),
                        child: SizedBox(
                          width: 50.0,
                          height: 75.0,
                          child: Center(
                            child: Text(
                              'GREEN',
                              style: TextStyle(color: Colors.black),
                            ),
                          ),
                        ),
                      ),
                      ColoredBox(
                        color: Color(0xff0000ff),
                        child: SizedBox(
                          width: 50.0,
                          height: 75.0,
                          child: Align(
                            alignment: Alignment.bottomCenter,
                            child: Text(
                              'BLUE',
                              style: TextStyle(color: Colors.white),
                            ),
                          ),
                        ),
                      ),
                    ],
                  ),
                  Column(
                    spacing: 40.0,
                    mainAxisAlignment: MainAxisAlignment.center,
                    children: <Widget>[
                      ColoredBox(
                        color: Color(0xffff0000),
                        child: SizedBox(
                          width: 50.0,
                          height: 75.0,
                          child: Align(
                            alignment: Alignment.topCenter,
                            child: Text(
                              'RED',
                              style: TextStyle(color: Colors.white),
                            ),
                          ),
                        ),
                      ),
                      ColoredBox(
                        color: Color(0xff00ff00),
                        child: SizedBox(
                          width: 50.0,
                          height: 75.0,
                          child: Center(
                            child: Text(
                              'GREEN',
                              style: TextStyle(color: Colors.black),
                            ),
                          ),
                        ),
                      ),
                      ColoredBox(
                        color: Color(0xff0000ff),
                        child: SizedBox(
                          width: 50.0,
                          height: 75.0,
                          child: Align(
                            alignment: Alignment.bottomCenter,
                            child: Text(
                              'BLUE',
                              style: TextStyle(color: Colors.white),
                            ),
                          ),
                        ),
                      ),
                    ],
                  ),
                  Column(
                    spacing: 40.0,
                    mainAxisAlignment: MainAxisAlignment.end,
                    children: <Widget>[
                      ColoredBox(
                        color: Color(0xffff0000),
                        child: SizedBox(
                          width: 50.0,
                          height: 75.0,
                          child: Align(
                            alignment: Alignment.topCenter,
                            child: Text(
                              'RED',
                              style: TextStyle(color: Colors.white),
                            ),
                          ),
                        ),
                      ),
                      ColoredBox(
                        color: Color(0xff00ff00),
                        child: SizedBox(
                          width: 50.0,
                          height: 75.0,
                          child: Center(
                            child: Text(
                              'GREEN',
                              style: TextStyle(color: Colors.black),
                            ),
                          ),
                        ),
                      ),
                      ColoredBox(
                        color: Color(0xff0000ff),
                        child: SizedBox(
                          width: 50.0,
                          height: 75.0,
                          child: Align(
                            alignment: Alignment.bottomCenter,
                            child: Text(
                              'BLUE',
                              style: TextStyle(color: Colors.white),
                            ),
                          ),
                        ),
                      ),
                    ],
                  ),
                  Column(
                    spacing: 40.0,
                    mainAxisAlignment: MainAxisAlignment.spaceBetween,
                    children: <Widget>[
                      ColoredBox(
                        color: Color(0xffff0000),
                        child: SizedBox(
                          width: 50.0,
                          height: 75.0,
                          child: Align(
                            alignment: Alignment.topCenter,
                            child: Text(
                              'RED',
                              style: TextStyle(color: Colors.white),
                            ),
                          ),
                        ),
                      ),
                      ColoredBox(
                        color: Color(0xff00ff00),
                        child: SizedBox(
                          width: 50.0,
                          height: 75.0,
                          child: Center(
                            child: Text(
                              'GREEN',
                              style: TextStyle(color: Colors.black),
                            ),
                          ),
                        ),
                      ),
                      ColoredBox(
                        color: Color(0xff0000ff),
                        child: SizedBox(
                          width: 50.0,
                          height: 75.0,
                          child: Align(
                            alignment: Alignment.bottomCenter,
                            child: Text(
                              'BLUE',
                              style: TextStyle(color: Colors.white),
                            ),
                          ),
                        ),
                      ),
                    ],
                  ),
                  Column(
                    spacing: 40.0,
                    mainAxisAlignment: MainAxisAlignment.spaceAround,
                    children: <Widget>[
                      ColoredBox(
                        color: Color(0xffff0000),
                        child: SizedBox(
                          width: 50.0,
                          height: 75.0,
                          child: Align(
                            alignment: Alignment.topCenter,
                            child: Text(
                              'RED',
                              style: TextStyle(color: Colors.white),
                            ),
                          ),
                        ),
                      ),
                      ColoredBox(
                        color: Color(0xff00ff00),
                        child: SizedBox(
                          width: 50.0,
                          height: 75.0,
                          child: Center(
                            child: Text(
                              'GREEN',
                              style: TextStyle(color: Colors.black),
                            ),
                          ),
                        ),
                      ),
                      ColoredBox(
                        color: Color(0xff0000ff),
                        child: SizedBox(
                          width: 50.0,
                          height: 75.0,
                          child: Align(
                            alignment: Alignment.bottomCenter,
                            child: Text(
                              'BLUE',
                              style: TextStyle(color: Colors.white),
                            ),
                          ),
                        ),
                      ),
                    ],
                  ),
                  Column(
                    spacing: 40.0,
                    mainAxisAlignment: MainAxisAlignment.spaceEvenly,
                    children: <Widget>[
                      ColoredBox(
                        color: Color(0xffff0000),
                        child: SizedBox(
                          width: 50.0,
                          height: 75.0,
                          child: Align(
                            alignment: Alignment.topCenter,
                            child: Text(
                              'RED',
                              style: TextStyle(color: Colors.white),
                            ),
                          ),
                        ),
                      ),
                      ColoredBox(
                        color: Color(0xff00ff00),
                        child: SizedBox(
                          width: 50.0,
                          height: 75.0,
                          child: Center(
                            child: Text(
                              'GREEN',
                              style: TextStyle(color: Colors.black),
                            ),
                          ),
                        ),
                      ),
                      ColoredBox(
                        color: Color(0xff0000ff),
                        child: SizedBox(
                          width: 50.0,
                          height: 75.0,
                          child: Align(
                            alignment: Alignment.bottomCenter,
                            child: Text(
                              'BLUE',
                              style: TextStyle(color: Colors.white),
                            ),
                          ),
                        ),
                      ),
                    ],
                  ),
                ],
              ),
            ),
          ),
        ),
      ),
    );
  }
}
```

</details>

### Preview

<img width="1072" alt="Screenshot 2024-07-30 at 15 40 59" src="https://github.com/user-attachments/assets/14f21091-9e46-4a58-8552-1379f4ba9216">

### `Row.spacing` Code sample

<details>
<summary>expand to view the code sample</summary> 

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

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

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

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      debugShowCheckedModeBanner: false,
      home: Scaffold(
        backgroundColor: Colors.black,
        body: Center(
          child: Padding(
            padding: const EdgeInsets.all(16.0),
            child: DecoratedBox(
              decoration: BoxDecoration(
                  border: Border.all(
                color: Colors.amber,
              )),
              child: const Column(
                mainAxisAlignment: MainAxisAlignment.spaceEvenly,
                children: <Widget>[
                  Row(
                    spacing: 40.0,
                    // ignore: avoid_redundant_argument_values
                    mainAxisAlignment: MainAxisAlignment.start,
                    children: <Widget>[
                      ColoredBox(
                        color: Color(0xffff0000),
                        child: SizedBox(
                          width: 50.0,
                          height: 75.0,
                          child: Align(
                            alignment: Alignment.centerLeft,
                            child: Text(
                              'RED',
                              style: TextStyle(color: Colors.white),
                            ),
                          ),
                        ),
                      ),
                      ColoredBox(
                        color: Color(0xff00ff00),
                        child: SizedBox(
                          width: 50.0,
                          height: 75.0,
                          child: Center(
                            child: Text(
                              'GREEN',
                              style: TextStyle(color: Colors.black),
                            ),
                          ),
                        ),
                      ),
                      ColoredBox(
                        color: Color(0xff0000ff),
                        child: SizedBox(
                          width: 50.0,
                          height: 75.0,
                          child: Align(
                            alignment: Alignment.centerRight,
                            child: Text(
                              'BLUE',
                              style: TextStyle(color: Colors.white),
                            ),
                          ),
                        ),
                      ),
                    ],
                  ),
                  Row(
                    spacing: 40.0,
                    mainAxisAlignment: MainAxisAlignment.center,
                    children: <Widget>[
                      ColoredBox(
                        color: Color(0xffff0000),
                        child: SizedBox(
                          width: 50.0,
                          height: 75.0,
                          child: Align(
                            alignment: Alignment.centerLeft,
                            child: Text(
                              'RED',
                              style: TextStyle(color: Colors.white),
                            ),
                          ),
                        ),
                      ),
                      ColoredBox(
                        color: Color(0xff00ff00),
                        child: SizedBox(
                          width: 50.0,
                          height: 75.0,
                          child: Center(
                            child: Text(
                              'GREEN',
                              style: TextStyle(color: Colors.black),
                            ),
                          ),
                        ),
                      ),
                      ColoredBox(
                        color: Color(0xff0000ff),
                        child: SizedBox(
                          width: 50.0,
                          height: 75.0,
                          child: Align(
                            alignment: Alignment.centerRight,
                            child: Text(
                              'BLUE',
                              style: TextStyle(color: Colors.white),
                            ),
                          ),
                        ),
                      ),
                    ],
                  ),
                  Row(
                    spacing: 40.0,
                    mainAxisAlignment: MainAxisAlignment.end,
                    children: <Widget>[
                      ColoredBox(
                        color: Color(0xffff0000),
                        child: SizedBox(
                          width: 50.0,
                          height: 75.0,
                          child: Align(
                            alignment: Alignment.centerLeft,
                            child: Text(
                              'RED',
                              style: TextStyle(color: Colors.white),
                            ),
                          ),
                        ),
                      ),
                      ColoredBox(
                        color: Color(0xff00ff00),
                        child: SizedBox(
                          width: 50.0,
                          height: 75.0,
                          child: Center(
                            child: Text(
                              'GREEN',
                              style: TextStyle(color: Colors.black),
                            ),
                          ),
                        ),
                      ),
                      ColoredBox(
                        color: Color(0xff0000ff),
                        child: SizedBox(
                          width: 50.0,
                          height: 75.0,
                          child: Align(
                            alignment: Alignment.centerRight,
                            child: Text(
                              'BLUE',
                              style: TextStyle(color: Colors.white),
                            ),
                          ),
                        ),
                      ),
                    ],
                  ),
                  Row(
                    spacing: 40.0,
                    mainAxisAlignment: MainAxisAlignment.spaceBetween,
                    children: <Widget>[
                      ColoredBox(
                        color: Color(0xffff0000),
                        child: SizedBox(
                          width: 50.0,
                          height: 75.0,
                          child: Align(
                            alignment: Alignment.centerLeft,
                            child: Text(
                              'RED',
                              style: TextStyle(color: Colors.white),
                            ),
                          ),
                        ),
                      ),
                      ColoredBox(
                        color: Color(0xff00ff00),
                        child: SizedBox(
                          width: 50.0,
                          height: 75.0,
                          child: Center(
                            child: Text(
                              'GREEN',
                              style: TextStyle(color: Colors.black),
                            ),
                          ),
                        ),
                      ),
                      ColoredBox(
                        color: Color(0xff0000ff),
                        child: SizedBox(
                          width: 50.0,
                          height: 75.0,
                          child: Align(
                            alignment: Alignment.centerRight,
                            child: Text(
                              'BLUE',
                              style: TextStyle(color: Colors.white),
                            ),
                          ),
                        ),
                      ),
                    ],
                  ),
                  Row(
                    spacing: 40.0,
                    mainAxisAlignment: MainAxisAlignment.spaceAround,
                    children: <Widget>[
                      ColoredBox(
                        color: Color(0xffff0000),
                        child: SizedBox(
                          width: 50.0,
                          height: 75.0,
                          child: Align(
                            alignment: Alignment.centerLeft,
                            child: Text(
                              'RED',
                              style: TextStyle(color: Colors.white),
                            ),
                          ),
                        ),
                      ),
                      ColoredBox(
                        color: Color(0xff00ff00),
                        child: SizedBox(
                          width: 50.0,
                          height: 75.0,
                          child: Center(
                            child: Text(
                              'GREEN',
                              style: TextStyle(color: Colors.black),
                            ),
                          ),
                        ),
                      ),
                      ColoredBox(
                        color: Color(0xff0000ff),
                        child: SizedBox(
                          width: 50.0,
                          height: 75.0,
                          child: Align(
                            alignment: Alignment.centerRight,
                            child: Text(
                              'BLUE',
                              style: TextStyle(color: Colors.white),
                            ),
                          ),
                        ),
                      ),
                    ],
                  ),
                  Row(
                    spacing: 40.0,
                    mainAxisAlignment: MainAxisAlignment.spaceEvenly,
                    children: <Widget>[
                      ColoredBox(
                        color: Color(0xffff0000),
                        child: SizedBox(
                          width: 50.0,
                          height: 75.0,
                          child: Align(
                            alignment: Alignment.centerLeft,
                            child: Text(
                              'RED',
                              style: TextStyle(color: Colors.white),
                            ),
                          ),
                        ),
                      ),
                      ColoredBox(
                        color: Color(0xff00ff00),
                        child: SizedBox(
                          width: 50.0,
                          height: 75.0,
                          child: Center(
                            child: Text(
                              'GREEN',
                              style: TextStyle(color: Colors.black),
                            ),
                          ),
                        ),
                      ),
                      ColoredBox(
                        color: Color(0xff0000ff),
                        child: SizedBox(
                          width: 50.0,
                          height: 75.0,
                          child: Align(
                            child: Text(
                              'BLUE',
                              style: TextStyle(color: Colors.white),
                            ),
                          ),
                        ),
                      ),
                    ],
                  ),
                ],
              ),
            ),
          ),
        ),
      ),
    );
  }
}

```

</details>

### Preview

<img width="1072" alt="Screenshot 2024-07-30 at 15 39 42" src="https://github.com/user-attachments/assets/717e9f5e-a491-4853-ba74-e72ec7493363">
2024-08-05 16:52:58 +00:00
Nate Wilson
788a0e3d2f
Implementing null-aware logic in /packages/flutter/ (#152294)
Hopefully soon, [flutter.dev/go/dart-patterns](https://flutter.dev/go/dart-patterns) will have lots of good feedback; in the meantime, I'll focus refactoring efforts on uncontroversial things :)

Previously, I was under the impression that I could solve issue #143803 with [just 1 PR](https://github.com/flutter/flutter/pull/143804).
It turns out that I had overlooked quite a bit!

<br>

```dart
// before
if (chunkEvents != null) {
  chunkEvents.listen((ImageChunkEvent event) {
      reportImageChunkEvent(event);
    },
  );
}

// after
chunkEvents?.listen(reportImageChunkEvent);
```
2024-07-31 23:35:24 +00:00
Sam Rawlins
e497ed7db0
Remove unnecessary parens in test (#151846)
In order to address [a bug in `unnecessary_parenthesis`](https://github.com/dart-lang/linter/issues/3046), we are reporting a few more cases in `unnecessary_parenthesis`. `a = (b = c)` is one such case. This change is being made in https://dart-review.googlesource.com/c/sdk/+/366891.
2024-07-17 09:54:34 +00:00
Michael Goderbauer
fb290b3121
docimports for flutter_goldens, flutter_localizations, flutter_web_plugins, fuchsia_remote_debug_protocol, integration_test (#151271)
Part of https://github.com/flutter/flutter/issues/150800
2024-07-11 20:15:05 +00:00
PurplePolyhedron
f194cd3298
Make FittedBox not throw when child has zero size. (#150430)
fix https://github.com/flutter/flutter/issues/135082 , fix https://github.com/flutter/flutter/issues/139539 , fix https://github.com/flutter/flutter/issues/142910

Before, `FittedBox` would throw when child size is zero, unless the constraint is tight and fit is not `BoxFit.scaleDown`.
2024-07-08 22:51:04 +00:00
PurplePolyhedron
c1a6a631fd
Fix typo in SliverLayoutDimensions.hashCode where not all properties are used in the hash code. (#150306)
https://github.com/flutter/flutter/issues/150305
fix typo in `SliverLayoutDimensions.hashCode` where not all properties are used in the hash code.
2024-06-17 22:34:20 +00:00
Kate Lovett
9b6813f4da
Reland TreeSliver (#149839)
Reland of https://github.com/flutter/flutter/pull/147171

It was reverted for a failing unit test that had passed in presubmit. Hopefully this sticks better.
Also fixed leaks in 37b10adc90
2024-06-17 19:49:05 +00:00
auto-submit[bot]
27e06569a1
Reverts "TreeSliver & associated classes (#147171)" (#149754)
Reverts: flutter/flutter#147171
Initiated by: QuncCccccc
Reason for reverting: tree is red due to a test in this PR
Original PR Author: Piinks

Reviewed By: {QuncCccccc, TahaTesser, bleroux}

This change reverts the following previous change:
**FYI for Reviewers:** Much of the API surface matches that of the 2D TreeView in https://github.com/flutter/packages/pull/6592. If it changes here, it should change there, and vice versa.

📜  [Design Document](https://docs.google.com/document/d/1-aFI7VjkF9yMkWpP94J8T_JREDS-M3bOak26PVehUYg/edit?usp=sharing)

This adds classes and associated callbacks and controllers for TreeSliver. Core components:
- TreeSliver
- RenderTreeSliver
- TreeSliverNode
- TreeSliverController
- TreeSliverStateMixin
- TreeSliverIndentationType

Fixes https://github.com/flutter/flutter/issues/114299

https://github.com/flutter/flutter/assets/16964204/3facd095-7262-4068-aa33-d713e2deca99

https://github.com/flutter/flutter/assets/16964204/f851ae30-8e71-45c7-82a4-9606986a5872
2024-06-05 17:17:19 +00:00
Kate Lovett
b50eb97b7d
TreeSliver & associated classes (#147171)
**FYI for Reviewers:** Much of the API surface matches that of the 2D TreeView in https://github.com/flutter/packages/pull/6592. If it changes here, it should change there, and vice versa.

📜  [Design Document](https://docs.google.com/document/d/1-aFI7VjkF9yMkWpP94J8T_JREDS-M3bOak26PVehUYg/edit?usp=sharing)

This adds classes and associated callbacks and controllers for TreeSliver. Core components:
- TreeSliver
- RenderTreeSliver
- TreeSliverNode
- TreeSliverController
- TreeSliverStateMixin
- TreeSliverIndentationType

Fixes https://github.com/flutter/flutter/issues/114299

https://github.com/flutter/flutter/assets/16964204/3facd095-7262-4068-aa33-d713e2deca99

https://github.com/flutter/flutter/assets/16964204/f851ae30-8e71-45c7-82a4-9606986a5872
2024-06-04 22:50:06 +00:00
Michael Goderbauer
8bed1cbe42
Switch to FilterQuality.medium for images (#148799)
https://github.com/flutter/flutter/issues/148253
2024-05-31 03:50:30 +00:00
Polina Cherkasova
65e3007687
Remove opt out for CurvedAnimation. (#147594) 2024-05-28 16:35:29 -07:00
LongCatIsLooong
0214afb40b
Fix the RenderFlex.computeDryBaseline implementation to match computeDistanceToActualBaseline (#149062)
Per Hixie's comment [here](https://github.com/flutter/flutter/issues/145739#issuecomment-2128006146), keep the current behavior
2024-05-28 23:21:08 +00:00
Justin McCandless
980b5a1976
Mouse onEnter and onExit now support hovering stylus (#149006)
Hovering with a stylus will now behave similarly to hovering with a mouse. For example, hovering a button will show the button's hovered styling.
2024-05-28 10:39:30 -07:00
LongCatIsLooong
a766945bdd
Allow RenderObject.getTransformTo to take an arbitrary RenderObject in the same tree (#148897)
This is https://github.com/flutter/flutter/pull/130192 but without the additional parameter.

Fixes https://github.com/flutter/flutter/issues/146764, https://github.com/flutter/flutter/issues/148410
2024-05-22 23:32:24 +00:00
Michael Goderbauer
26030557b1
Fix semantic debugger (#147953)
This was broken in https://github.com/flutter/flutter/pull/122452. The culprit is that `PipelineOwner.ensureSemantics` doesn't turn on semantics for the entire app, it pretends to only turn it on for the local `PipelineOwner`. Unfortunately, that local `PipelineOwner` is never informed that it should produce semantics when semantics are not turned on globally. So, `PipelineOwner.ensureSemantics` is essentially without effect if semantics are not already turned on globally.

I can't think of a use case where it would be useful to only turn on semantics for a particular pipeline owner and fixing `PipelineOwner.ensureSemantics` would get pretty messy with performance implications even if semantics are turned off. So, this PR deprecates that functionality and moves the `SemanticsDebugger` to the global semantics API.

Fixes https://github.com/flutter/flutter/issues/147665.
2024-05-08 23:12:47 +00:00
LongCatIsLooong
ab8ecd5e74
Implement getDryBaseline for Stack and Overlay (#146253) 2024-05-02 00:31:12 +00:00
Ian Hickson
db4dfa0dde
Remove obsolete performance analysis tools. (#147663)
We're unlikely to support these reliably going forward.
2024-05-01 22:05:02 +00:00
LongCatIsLooong
101ff6fe7d
zero-sized RenderConstraintsTransformBox respects clipBehavior (#147349)
Fixes https://github.com/flutter/flutter/issues/146840
2024-04-26 04:06:09 +00:00
Ian Hickson
9751d4d002
Allow the SceneBuilder, PictureRecord, and Canvas constructor calls from the rendering layer to be hooked (#147271)
This also includes some minor cleanup of documentation, asserts, and tests.
2024-04-25 00:19:24 +00:00
Anis Alibegić
140edb9883
Fixed few typos (#147087)
Here's another PR with a couple of typos fixed. As you can see there was a typo in _fileReferenceI**n**dentifiers_, in class _ParsedProjectInfo._ Maybe we should do some check on that since I'm not sure if that property is used somewhere outside Flutter?
2024-04-22 16:49:19 +00:00
Valentin Vignal
e2c812155c
Fix curved animation memory leak for scrollbar (#146670) 2024-04-12 09:24:13 -07:00
Jackson Gardner
51e70fa16b
Fix skwasm tests (#145570)
Skwasm tests are now running as `bringup: true` in postsubmit, but failing. Let's get them fixed.
2024-04-09 19:35:07 +00:00
LongCatIsLooong
a81729c68e
Renderflex cross intrinsic size with baseline alignment (#146185) 2024-04-03 17:41:50 +00:00
LongCatIsLooong
460a5e22bd
RenderFlex baseline intrinsics (#145483)
Implements `RenderFlex` intrinsics calculation when children are baseline aligned in the cross axis.
2024-03-28 23:07:06 +00:00
Michael Goderbauer
11c034f037
Fix nullability of getFullHeightForCaret (#145554)
Fixes https://github.com/flutter/flutter/issues/145507.

Looks like this was accidentally migrated to nullable all the way back when we switched to NNBD.
2024-03-21 23:38:16 +00:00
LongCatIsLooong
98369bdd50
Introduce methods for computing the baseline location of a RenderBox without affecting the current layout (#144655)
Extracted from https://github.com/flutter/flutter/pull/138369

Introduces `RenderBox.{compute,get}DryBaseline` for computing the baseline location in `RenderBox.computeDryLayout`.
2024-03-18 21:32:22 +00:00
LongCatIsLooong
cc01701781
Use a separate TextPainter for intrinsics calculation in RenderEditable and RenderParagraph (#144577)
Use a dedicated `TextPainter` for intrinsic size calculation in `RenderEditable` and `RenderParagraph`.

This is an implementation detail so the change should be covered by existing tests.  Performance wise this shouldn't be significantly slower since SkParagraph [caches the result of slower operations across different paragraphs](9c62e7b382/modules/skparagraph/src/ParagraphCache.cpp (L254-L272)). Existing benchmarks should be able to catch potential regressions (??).

The reason for making this change is to make sure that intrinsic size computations don't destroy text layout artifacts, so I can expose the text layout as a stream of immutable `TextLayout` objects, to signify other render objects that text-layout-dependent-cache (such as caches for `getBoxesForRange` which can be relatively slow to compute) should be invalidated and  `markNeedsPaint` needs to be called if the painting logic depended on text layout.
Without this change, the intrinsics/dry layout calculations will add additional events to the text layout stream, which violates the "dry"/non-destructive contract.
2024-03-16 01:15:19 +00:00
Nate
17a27358a6
Implementing switch expressions in flutter/test/ (#144580)
Migrates test code to new `switch` syntax.
2024-03-14 14:20:44 -07:00
Matej Knopp
19087442ce
RenderViewport max layout cycles should depend on number of slivers (#144104)
Fixes https://github.com/flutter/flutter/issues/144102

## 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.

If you need help, consider asking for advice on the #hackers-new channel
on [Discord].

<!-- Links -->
[Contributor Guide]:
https://github.com/flutter/flutter/wiki/Tree-hygiene#overview
[Tree Hygiene]: https://github.com/flutter/flutter/wiki/Tree-hygiene
[test-exempt]:
https://github.com/flutter/flutter/wiki/Tree-hygiene#tests
[Flutter Style Guide]:
https://github.com/flutter/flutter/wiki/Style-guide-for-Flutter-repo
[Features we expect every widget to implement]:
https://github.com/flutter/flutter/wiki/Style-guide-for-Flutter-repo#features-we-expect-every-widget-to-implement
[CLA]: https://cla.developers.google.com/
[flutter/tests]: https://github.com/flutter/tests
[breaking change policy]:
https://github.com/flutter/flutter/wiki/Tree-hygiene#handling-breaking-changes
[Discord]: https://github.com/flutter/flutter/wiki/Chat
[Data Driven Fixes]:
https://github.com/flutter/flutter/wiki/Data-driven-Fixes
2024-03-13 22:28:43 +01:00
Victoria Ashworth
825e901e00
Set cacheExtent for SliverFillRemaining widget (#143612)
When a Sliver with items is outside of the Viewport, but within the Viewport's `cacheExtent`, the framework should create SemanticNodes for the items even though they are out of view. However, for this to work, the Sliver's geometry must have a `cacheExtent` (how much space the sliver took up of the Viewport's `cacheExtent`) greater than 0, otherwise it is [excluded](f01ce9f4cb/packages/flutter/lib/src/rendering/viewport.dart (L311-L315)).

`SliverFillRemaining` widgets that fall outside the viewport did not have this set and therefore were being excluded when SemanticNodes were created, even if they were within the Viewport's `cacheExtent`. This PR sets the `cacheExtent` for `SliverFillRemaining` widgets.

In addition, `RenderSliverFillRemainingWithScrollable` would get dropped from the semantic tree because it's child had a size of 0 when outside the remaining paint extent. To fix, we give the child a `maxExtent` of the sliver's `cacheExtent` if it's outside the remaining paint extent but within the viewport's cacheExtent.

Fixes https://github.com/flutter/flutter/issues/142065.

Definitions:
* `RenderViewport.cacheExtent`:
  ```dart
  /// The viewport has an area before and after the visible area to cache items
  /// that are about to become visible when the user scrolls.
  ///
  /// Items that fall in this cache area are laid out even though they are not
  /// (yet) visible on screen. The [cacheExtent] describes how many pixels
  /// the cache area extends before the leading edge and after the trailing edge
  /// of the viewport.
  ///
  /// The total extent, which the viewport will try to cover with children, is
  /// [cacheExtent] before the leading edge + extent of the main axis +
  /// [cacheExtent] after the trailing edge.
  ///
  /// The cache area is also used to implement implicit accessibility scrolling
  /// on iOS: When the accessibility focus moves from an item in the visible
  /// viewport to an invisible item in the cache area, the framework will bring
  /// that item into view with an (implicit) scroll action.
  ```
* `SliverGeometry.cacheExtent`:
  ```dart
  /// How many pixels the sliver has consumed in the
  /// [SliverConstraints.remainingCacheExtent].
  ```
* `SliverContraints.remainingCacheExtent`:
  ```dart
  /// Describes how much content the sliver should provide starting from the
  /// [cacheOrigin].
  ///
  /// Not all content in the [remainingCacheExtent] will be visible as some
  /// of it might fall into the cache area of the viewport.
  ///
  /// Each sliver should start laying out content at the [cacheOrigin] and
  /// try to provide as much content as the [remainingCacheExtent] allows.
  ```
2024-03-13 16:34:25 +00:00
Valentin Vignal
96dd1984ec
Fix memory leak in editable_gesture_test.dart (#144691) 2024-03-06 17:51:54 -08:00
Greg Price
6b9d3ea4fc
Fill in SliverConstraints fields missing from ==, hashCode, toString (#143661)
I was doing some debugging on a RenderSliver subclass, and found
that SliverConstraints.toString was missing the precedingScrollExtent
field.

Add that, and add both that field and userScrollDirection to the
`==` and hashCode implementations, which had been skipping them,
so that all three methods now handle all the class's fields.
2024-03-06 03:23:18 +00:00
Nate
1a0dc8f1e1
Add missing parameter to TableBorder.symmetric, and improve class constructors (#144279)
Originally, my aim was just to refactor (as per usual), but while messing around with the `TableBorder.symmetric` constructor, I realized that `borderRadius` was missing!

This pull request makes a few class constructors more efficient, and it fixes #144277 by adding the missing parameter.

<br>
2024-03-04 20:20:19 +00:00