mirror of
https://github.com/flutter/flutter.git
synced 2025-06-03 00:51:18 +00:00
a94999ba50
Each layer is supposed to reexport the parts of the previous layer that are part of its API. - In painting.dart, export from dart:ui all the Canvas-related APIs that make sense to be used at higher levels, e.g. PaintingStyle. - Delete painting/shadows.dart. It was dead code. - In rendering/object.dart, export all of painting.dart. - In widgets/basic.dart, export all of painting.dart and animation.dart. Some classes in animation/ are renamed to make this less disruptive and confusing to the namespace. - Split out Stocks back into an import model rather than a part model, so that it's easier to manage its dependencies on a per-file basis. - Move Ticker to scheduler library. - Remove as many redundant imports as possible now. - Some minor nit picking cleanup in various files.
88 lines
2.5 KiB
Dart
88 lines
2.5 KiB
Dart
// Copyright (c) 2016, the Flutter project authors. Please see the AUTHORS file
|
|
// for details. All rights reserved. Use of this source code is governed by a
|
|
// BSD-style license that can be found in the LICENSE file.
|
|
|
|
import 'dart:ui' as ui show window;
|
|
|
|
import 'package:flutter/material.dart';
|
|
import 'package:flutter/services.dart';
|
|
import 'package:flutter/widgets.dart';
|
|
|
|
class ExampleApp extends StatefulComponent {
|
|
ExampleState createState() => new ExampleState();
|
|
}
|
|
|
|
const List<double> _ratios = const <double>[ 1.0, 1.8, 1.3, 2.4, 2.5, 2.6, 3.9 ];
|
|
|
|
class ExampleState extends State<ExampleApp> {
|
|
|
|
int _index = 0;
|
|
double _ratio = _ratios[0];
|
|
|
|
final EdgeDims padding = new EdgeDims.TRBL(
|
|
ui.window.padding.top,
|
|
ui.window.padding.right,
|
|
ui.window.padding.bottom,
|
|
ui.window.padding.left
|
|
);
|
|
|
|
void _handlePressed() {
|
|
setState(() {
|
|
_index++;
|
|
_index = _index % _ratios.length;
|
|
_ratio = _ratios[_index];
|
|
});
|
|
}
|
|
|
|
Widget build(BuildContext context) {
|
|
const double size = 200.0; // 200 logical pixels
|
|
TextStyle style = new TextStyle(color: const Color(0xFF0000000));
|
|
return new MediaQuery(
|
|
data: new MediaQueryData(
|
|
size: ui.window.size,
|
|
devicePixelRatio: _ratio,
|
|
padding: padding
|
|
),
|
|
child: new AssetVendor(
|
|
bundle: rootBundle,
|
|
devicePixelRatio: _ratio,
|
|
child: new Material(
|
|
child: new Padding(
|
|
padding: const EdgeDims.symmetric(vertical: 48.0),
|
|
child: new Column(
|
|
children: <Widget>[
|
|
new AssetImage(
|
|
name: 'assets/2.0x/starcircle.png',
|
|
height: size,
|
|
width: size,
|
|
fit: ImageFit.fill
|
|
),
|
|
new Text('Image designed for pixel ratio 2.0', style: style),
|
|
new AssetImage(
|
|
name: 'assets/starcircle.png',
|
|
height: size,
|
|
width: size,
|
|
fit: ImageFit.fill
|
|
),
|
|
new Text(
|
|
'Image variant for pixel ratio: ' + _ratio.toString(),
|
|
style: style
|
|
),
|
|
new RaisedButton(
|
|
child: new Text('Change pixel ratio', style: style),
|
|
onPressed: _handlePressed
|
|
)
|
|
],
|
|
justifyContent: FlexJustifyContent.spaceBetween
|
|
)
|
|
)
|
|
)
|
|
)
|
|
);
|
|
}
|
|
}
|
|
|
|
main() {
|
|
runApp(new ExampleApp());
|
|
}
|