mirror of
https://github.com/flutter/flutter.git
synced 2025-06-03 00:51:18 +00:00
3595e7dad0
The `theme` parameter of `Preview(...)` allows for developers to provide a callback that returns a `PreviewThemeData` instance which can contain theming data for Material and Cupertino widgets in both light and dark modes. The provided theme data will be injected into the widget tree and applied to the previewed widget. The `brightness` parameter allows for developers to specify an initial brightness setting (e.g., light vs dark mode) for the previewed widget. If not provided, the current system default is used. A new button has also been added to each widget preview card that allows for toggling between light and dark mode for individual previews. **Demo:** https://github.com/user-attachments/assets/f0a4a3bc-25d2-49b0-a5f6-9149eccfc1d4 Fixes https://github.com/flutter/flutter/issues/166436 Fixes https://github.com/flutter/flutter/issues/166275 Fixes https://github.com/flutter/flutter/issues/166279 Fixes https://github.com/flutter/flutter/issues/166437 |
||
|---|---|---|
| .. | ||
| android | ||
| ios | ||
| lib | ||
| money_asset_manifest.json | ||
| pubspec.yaml | ||
| README.md | ||
microbenchmarks
To run these benchmarks on a device, first run flutter logs in one
window to see the device logs, then, in a different window, run:
flutter run -d $DEVICE_ID --profile lib/benchmark_collection.dart
To run a subset of tests:
flutter run -d $DEVICE_ID --profile lib/benchmark_collection.dart --dart-define=tests=foundation/change_notifier_bench.dart,language/sync_star_bench.dart
To specify a seed value for shuffling tests:
flutter run -d $DEVICE_ID --profile lib/benchmark_collection.dart --dart-define=seed=12345
The results should be in the device logs.
Avoid changing names of the benchmarks
Each microbenchmark is identified by a name, for example,
"catmullrom_transform_iteration". Changing the name passed to BenchmarkResultPrinter.addResult
will effectively remove the old benchmark and create a new one,
losing the historical data associated with the old benchmark in the process.