2 Commits

Author	SHA1	Message	Date
LongCatIsLooong	b2e22d3558	Replaces textScaleFactor with TextScaler (#128522) ... Deprecate `textScaleFactor` in favor of `textScaler`, in preparation for Android 14 [Non-linear font scaling to 200%](https://developer.android.com/about/versions/14/features#non-linear-font-scaling). The `TextScaler` class can be moved to `dart:ui` in the future, if we decide to use the Android platform API or AndroidX to get the scaling curve instead of hard coding the curve in the framework. I haven't put the Flutter version in the deprecation message so the analyzer checks are failing. Will do so after I finish the migration guide. **Why `TextScaler.textScaleFactor`** The author of a `TextScaler` subclass should provide a fallback `textScaleFactor`. By making `TextScaler` also contain the `textScaleFactor` information it also makes it easier to migrate: if a widget overrides `MediaQueryData.textScaler` in the tree, for unmigrated widgets in the subtree it would also have to override `MediaQueryData.textScaleFactor`, and that makes it difficult to remove `MediaQueryData.textScaleFactor` in the future. ## A full list of affected APIs in this PR Deprecated: The method/getter/setter/argument is annotated with a `@Deprecated()` annotation in this PR, and the caller should replace it with `textScaler` instead. Unless otherwise specified there will be a Flutter fix available to help with migration but it's still recommended to migrate case-by-case. **Replaced**: The method this `textScaleFactor` argument belongs to is rarely called directly by user code and is not overridden by any of the registered custom tests, so the argument is directly replaced by `TextScaler`. **To Be Deprecated**: The method/getter/setter/argument can't be deprecated in this PR because a registered customer test depends on it and a Flutter fix isn't available (or the test was run without applying flutter fixes first). This method/getter/setter/argument will be deprecated in a followup PR once the registered test is migrated. ### `Painting` Library | Affected API | State of `textScaleFactor` | Comment | | --- | --- | --- | | `InlineSpan.build({ double textScaleFactor = 1.0 })` argument | **Replaced** | | | `TextStyle.getParagraphStyle({ double TextScaleFactor = 1.0 })` argument | **Replaced** | | | `TextStyle.getTextStyle({ double TextScaleFactor = 1.0 })` argument| Deprecated | Can't replace: c47fd38dca/super_editor/lib/src/infrastructure/super_textfield/desktop/desktop_textfield.dart (L1903-L1905)| | `TextPainter({ double TextScaleFactor = 1.0 })` constructor argument | Deprecated | | | `TextPainter.textScaleFactor` getter and setter | Deprecated | No Flutter Fix, not expressible yet | | `TextPainter.computeWidth({ double TextScaleFactor = 1.0 })` argument | Deprecated | | | `TextPainter.computeMaxIntrinsicWidth({ double TextScaleFactor = 1.0 })` argument | Deprecated | | ### `Rendering` Library | Affected API | State of `textScaleFactor` | Comment | | --- | --- | --- | | `RenderEditable({ double TextScaleFactor = 1.0 })` constructor argument | Deprecated | | | `RenderEditable.textScaleFactor` getter and setter | Deprecated | No Flutter Fix, not expressible yet | | `RenderParagraph({ double TextScaleFactor = 1.0 })` constructor argument | Deprecated | | | `RenderParagraph.textScaleFactor` getter and setter | Deprecated | No Flutter Fix, not expressible yet | ### `Widgets` Library | Affected API | State of `textScaleFactor` | Comment | | --- | --- | --- | | `MediaQueryData({ double TextScaleFactor = 1.0 })` constructor argument | **To Be Deprecated** | cd7b93532e/packages/flutter_markdown/test/text_scale_factor_test.dart (LL39C21-L39C35) | | `MediaQueryData.textScaleFactor` getter | Deprecated | | | `MediaQueryData.copyWith({ double? TextScaleFactor })` argument | Deprecated | | | `MediaQuery.maybeTextScaleFactorOf(BuildContext context)` static method | Deprecated | No Flutter Fix, not expressible yet | | `MediaQuery.textScaleFactorOf(BuildContext context)` static method | **To Be Deprecated** | cd7b93532e/packages/flutter_markdown/lib/src/_functions_io.dart (L68-L70), No Flutter Fix, not expressible yet | | `RichText({ double TextScaleFactor = 1.0 })` constructor argument | **To Be Deprecated** | cd7b93532e/packages/flutter_markdown/lib/src/builder.dart (L829-L843) | | `RichText.textScaleFactor` getter | **To Be Deprecated** | A constructor argument can't be deprecated right away| | `Text({ double? TextScaleFactor = 1.0 })` constructor argument | **To Be Deprecated** | 914d120da1/packages/rfw/lib/src/flutter/core_widgets.dart (L647) , No Flutter Fix because of https://github.com/dart-lang/sdk/issues/52664 | | `Text.rich({ double? TextScaleFactor = 1.0 })` constructor argument | **To Be Deprecated** | The default constructor has an argument that can't be deprecated right away. No Flutter Fix because of https://github.com/dart-lang/sdk/issues/52664 | | `Text.textScaleFactor` getter | **To Be Deprecated** | A constructor argument can't be deprecated right away | | `EditableText({ double? TextScaleFactor = 1.0 })` constructor argument | Deprecated | No Flutter Fix because of https://github.com/dart-lang/sdk/issues/52664 | | `EditableText.textScaleFactor` getter | Deprecated | | ### `Material` Library | Affected API | State of `textScaleFactor` | Comment | | --- | --- | --- | | `SelectableText({ double? TextScaleFactor = 1.0 })` constructor argument | **To Be Deprecated** | cd7b93532e/packages/flutter_markdown/lib/src/builder.dart (L829-L843), No Flutter Fix because of https://github.com/dart-lang/sdk/issues/52664 | | `SelectableText.rich({ double? TextScaleFactor = 1.0 })` constructor argument | **To Be Deprecated** | The default constructor has an argument that can't be deprecated right away. No Flutter Fix because of https://github.com/dart-lang/sdk/issues/52664 | | `SelectableText.textScaleFactor` getter | **To Be Deprecated** | A constructor argument can't be deprecated right away | A lot of material widgets (`Slider`, `RangeSlider`, `TimePicker`, and different types of buttons) also change their layout based on `textScaleFactor`. These need to be handled in a case-by-case fashion and will be migrated in follow-up PRs.	2023-07-17 17:56:07 +00:00
Istiak Ahmed	042eaf6b90	Add sample code for SliverAppBar (#125785) ... This PR adds an another example for SliverAppBar, showing the use of stretch and onStretchTrigger https://user-images.githubusercontent.com/68919043/235420973-2bfb9871-9e05-4d87-9538-941d43178c76.mp4 Fixes #125651 ### Adds sample code for SliverAppBar [stretch, onStretchTrigger] This PR adds an another simple and easily understandable example code for SliverAppBar.	2023-05-05 18:09:25 +00:00