This PR fixes scrolling issues with `NestedScrollView` using the `BouncingScrollPhysics`. In one of the steps of the calculation, we can reach a state where the position of the inner scrollable is set to a `double` value that falls within `precisionErrorTolerance` of `0` but we were using `==` with `0` rather than checking for a precision. My posts in the linked issue show the current behavior, and how I reached to conclusion (the code in this PR). This PR only addresses the "jumping" of the outer scrollable.
Fixes#136199
I have not finished a test for this since I have never done so and therefore have 0 experience writing tests in Flutter, so any help there would be appreciated. I am also not sure how to test double precision errors in general. I did run all the nested_scroll_view_tests.dart locally and there are no failures.
Fixes#141140.
This ensures that if you call `.copyWith` and pass a `debugLabel`, the `debugLabel` won't be ignored, even if the receiver (the TextStyle you're calling `.copyWith` on) doesn't have a `debugLabel`.
The debugLabel field was added in #12552. I skimmed the discussion there and didn't find anything indicating that the param was being ignored on purpose.
I added a test case that passes with the new code and fails with the old code.
Replace `as Map<Object?, Object?>` to handle nullable case
Fixes runtime issue in Wasm
*Replace this paragraph with a description of what this PR is changing or adding, and why. Consider including before/after screenshots.*
*List which issues are fixed by this PR. You must list at least one issue. An issue is not required if the PR fixes something trivial like a typo.*
*If you had to change anything in the [flutter/tests] repo, include a link to the migration guide as per the [breaking change policy].*
This reverts commit
d24c01bd0c.
The original change was reverted because it caused some apps to get
stuck on the splash screen on some phones.
An investigation determined that this was due to a rounding error.
Example: The device reports a physical size of 1008.0 x 2198.0 with a
dpr of 1.912500023841858. Flutter would translate that to a logical size
of 527.0588169589221 x 1149.2810314243163 and use that as the input for
its layout algorithm. Since the constraints here are tight, the layout
algorithm would determine that the resulting logical size of the root
render object must be 527.0588169589221 x 1149.2810314243163.
Translating this back to physical pixels by applying the dpr resulted in
a physical size of 1007.9999999999999 x 2198.0 for the frame. Android
now rejected that frame because it didn't match the expected size of
1008.0 x 2198.0 and since no frame had been rendered would never take
down the splash screen.
Prior to dynamically sized views, this wasn't an issue because we would
hard-code the frame size to whatever the requested size was.
Changes in this PR over the original PR:
* The issue has been fixed now by constraining the calculated physical
size to the input physical constraints which makes sure that we always
end up with a size that is acceptable to the operating system.
* The `ViewConfiguration` was refactored to use the slightly more
convenient `BoxConstraints` over the `ViewConstraints` to represent
constraints. Both essentially represent the same thing, but
`BoxConstraints` are more powerful and we avoid a couple of translations
between the two by translating the` ViewConstraints` from the
`FlutterView` to `BoxConstraints` directly when the `ViewConfiguration`
is created.
All changes over the original PR are contained in the second commit of
this PR.
Fixes b/316813075
Part of https://github.com/flutter/flutter/issues/134501.
Introduced `validateGranually` which, apart from announcing the errors to the UI, returns a `Map<Key, bool>` providing more granular validation details: The results of calling `validate` on each `FormField` and their corresponding widget keys.
* related issue: #135363
fixes [`RouteObserver` example throws an error](https://github.com/flutter/flutter/issues/141078)
### Description
This updates the `RouteObserver` example from snippet to Dartpad example and fixes the error when running the code snippet
## Description
This PR adds custom system-wide text selection toolbar buttons on Android for `SelectableRegion` and `SelectionArea`.
https://github.com/flutter/flutter/pull/139738 adds those buttons for `EditableText` (which is used by `TextField` and `SelectableText` but not by `SelectionArea`).
## Related Issue
Step 5 for https://github.com/flutter/flutter/issues/139361
## Tests
Adds 2 tests.
## Description
This PR fixes an issue related to the spell check implementation usage of Regex (searched text should be escaped).
## Related Issue
Fixes https://github.com/flutter/flutter/issues/136032.
## Tests
Adds 1 test.
(#139572) I would like to request an update to the document to resolve confusion.
I actually modified the code by applying priority as in the comment in [#139572](https://github.com/flutter/flutter/issues/139572) as shown below, but I thought that if 'OutlinedBorder' was used for 'shape', the default value of side for 'OutlinedBorder' was also the developer's intention.
```
OutlinedBorder _getShape(ThemeData theme, ChipThemeData chipTheme, ChipThemeData chipDefaults) {
final BorderSide? resolvedSide =
MaterialStateProperty.resolveAs<BorderSide?>(widget.side, materialStates)
?? MaterialStateProperty.resolveAs<BorderSide?>(chipTheme.side, materialStates);
final BorderSide? resolvedShapeSide =
MaterialStateProperty.resolveAs<BorderSide?>(widget.shape?.side, materialStates)
?? MaterialStateProperty.resolveAs<BorderSide?>(chipTheme.shape?.side, materialStates);
final OutlinedBorder resolvedShape =
MaterialStateProperty.resolveAs<OutlinedBorder?>(widget.shape, materialStates)
?? MaterialStateProperty.resolveAs<OutlinedBorder?>( chipTheme.shape, materialStates)
?? MaterialStateProperty.resolveAs<OutlinedBorder?>(chipDefaults.shape, materialStates)
// TODO(tahatesser): Remove this fallback when Material 2 is deprecated.
?? const StadiumBorder();
// If the side is provided, shape uses the provided side.
if (resolvedSide != null) {
return resolvedShape.copyWith(side: resolvedSide);
}
if (resolvedShapeSide != null) {
return resolvedShape.copyWith(side: resolvedShapeSide);
}
// If the side is not provided
// then the shape's side is used. Otherwise, the default side is used.
return resolvedShape.copyWith(side: chipDefaults.side);
}
```
(in `chip.dart`)
However, (#133856) PR seems to be intended to ignore this and use the aspect of `chipDefault.side` even if the developer specifies `shape.side` as [Border.none] without explicitly applying `side` .
This is probably because the default value of OutlinedBorder is [Border.none].
I think this is an area that can cause enough confusion, but there are a lot of things that need to be modified to reduce confusion through code changes, and the impact on existing code is likely to be significant.
I also confirmed that this is not accurately explained in the API Docs.
So rather than modifying the code, I decided to add additional explanation to the `shape` comment.
If the results are different from what you intended or the updated content is strange, please review. ð
Changes drag release logic so that an armed refresh is only canceled if the user has scrolled back up beyond the point where the refresh indicator was armed. (Fixes https://github.com/flutter/flutter/issues/138848.)
This is the minimal change I found could be made to restore something like the behavior that I would expect.
This may still need a bit of work, because it only masks the second issue I mentioned, that releasing a drag can cause the scroll position to be animated back up from the release point. There is actually a bug about that: https://github.com/flutter/flutter/issues/6052. I would like to see that bug fixed too. This PR doesn't address that, but makes it harder to hit that issue.
@Piinks this is a recreation of #139015 (since I couldn't figure out some issue with a git detached branch, so I fixed the PR and I'm re-submitting it). This version includes one line that was somehow accidentally dropped from the original PR. This will hopefully fix the test failures.
However, I don't have a clue how to write a test for a Flutter UI widget. I'll try to figure that out, but also I don't have a lot of time to work on this. I would appreciate at least some user testing to verify that the new behavior is much more intuitive than the old behavior.
- [?] All existing and new tests are passing.
Fix and unskip the following CanvasKit tests:
- `test/painting/decoration_test.dart`
- `test/rendering/layers_test.dart`
- `test/widgets/app_overrides_test.dart`
[Fix] Consistency in ButtonStyleButton related Tests:
- Replaced the usage of ElevatedButton with FilledButton in FilledButton's test.
- Replaced the usage of TextButton.styleFrom with FilledButton.styleFrom in FilledButton's test.
- Replaced the usage of TextButton.styleFrom with ElevatedButton.styleFrom in ElevatedButton's test.
fixes https://github.com/flutter/flutter/issues/138289
---
SegmentedButtom.styleFrom has been added to the segment button, so there is no longer any need to the button style from the beginning. It works like ElevatedButton.styleFrom only I added selectedForegroundColor, selectedBackgroundColor. In this way, the user will be able to change the color first without checking the MaterialState states. I added tests of the same controls.
#129215 I opened this problem myself, but I was rejected because I handled too many items in a PR. For now, I wrote a structure that only handles MaterialStates instead of users.
old (still avaliable)
<img width="626" alt="image" src="https://github.com/flutter/flutter/assets/65075121/9446b13b-c355-4d20-bda2-c47a23d42d4f">
new (just an option for developer)
<img width="483" alt="image" src="https://github.com/flutter/flutter/assets/65075121/0a645257-4c83-4029-9484-bd746c02265f">
### Code sample
<details>
<summary>expand to view the code sample</summary>
```dart
import 'package:flutter/material.dart';
/// Flutter code sample for [SegmentedButton].
void main() {
runApp(const SegmentedButtonApp());
}
enum Calendar { day, week, month, year }
class SegmentedButtonApp extends StatefulWidget {
const SegmentedButtonApp({super.key});
@override
State<SegmentedButtonApp> createState() => _SegmentedButtonAppState();
}
class _SegmentedButtonAppState extends State<SegmentedButtonApp> {
Calendar calendarView = Calendar.day;
@override
Widget build(BuildContext context) {
return MaterialApp(
theme: ThemeData(useMaterial3: true),
home: Scaffold(
body: Center(
child: SegmentedButton<Calendar>(
style: SegmentedButton.styleFrom(
foregroundColor: Colors.amber,
visualDensity: VisualDensity.comfortable,
),
// style: const ButtonStyle(
// foregroundColor: MaterialStatePropertyAll<Color>(Colors.deepPurple),
// visualDensity: VisualDensity.comfortable,
// ),
segments: const <ButtonSegment<Calendar>>[
ButtonSegment<Calendar>(
value: Calendar.day,
label: Text('Day'),
icon: Icon(Icons.calendar_view_day)),
ButtonSegment<Calendar>(
value: Calendar.week,
label: Text('Week'),
icon: Icon(Icons.calendar_view_week)),
ButtonSegment<Calendar>(
value: Calendar.month,
label: Text('Month'),
icon: Icon(Icons.calendar_view_month)),
ButtonSegment<Calendar>(
value: Calendar.year,
label: Text('Year'),
icon: Icon(Icons.calendar_today)),
],
selected: <Calendar>{calendarView},
onSelectionChanged: (Set<Calendar> newSelection) {
setState(() {
calendarView = newSelection.first;
});
},
),
),
),
);
}
}
```
</details>
Fixes https://github.com/flutter/flutter/issues/131435, https://github.com/flutter/flutter/issues/104594, https://github.com/flutter/flutter/issues/43400
Currently the method we use for text span hit testing `TextPainter.getPositionForOffset` always returns the closest `TextPosition`, even when the given offset is far away from the text.
The new TextPaintes method tells you the layout bounds `(width = letterspacing / 2 + x_advance + letterspacing / 2, height = font ascent + font descent)` of a character, the PR changes the hit testing implementation such that a TextSpan is only considered hit if the point-down event landed in one of its character's layout bounds.
Potential issues:
In theory since the text is baseline aligned, we should use the max ascent and max descent of each character to calculate the height of the text span's hit-test region, in case some characters in the span have to fall back to a different font, but that will be slower and it typically doesn't make a huge difference.
This is a breaking change.
*Replace this paragraph with a description of what this PR is changing or adding, and why. Consider including before/after screenshots.*
*List which issues are fixed by this PR. You must list at least one issue. An issue is not required if the PR fixes something trivial like a typo.*
*If you had to change anything in the [flutter/tests] repo, include a link to the migration guide as per the [breaking change policy].*
I want to build a widget that adds some extra functionality when the inner text overflow. So the problem occurred, I can't find an elegant way to determine if the text is overflowing.
So i expose `didExceedMaxLines` from `RenderParagraph`, I think it can make sense. Have there some advice?
Originally landed in https://github.com/flutter/flutter/pull/139549
Originally reverted in https://github.com/flutter/flutter/pull/140085
- Remove all use of global variables.
- Always pass in all dependencies, only create them in main or in tests.
- Pass in the "print" primitive.
- Make all network traffic retry (except when run locally, when it just auto-passes).
- Enable tests to be run in random order.
- Better error messages
