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449f4a6673
* Update project.pbxproj files to say Flutter rather than Chromium Also, the templates now have an empty organization so that we don't cause people to give their apps a Flutter copyright. * Update the copyright notice checker to require a standard notice on all files * Update copyrights on Dart files. (This was a mechanical commit.) * Fix weird license headers on Dart files that deviate from our conventions; relicense Shrine. Some were already marked "The Flutter Authors", not clear why. Their dates have been normalized. Some were missing the blank line after the license. Some were randomly different in trivial ways for no apparent reason (e.g. missing the trailing period). * Clean up the copyrights in non-Dart files. (Manual edits.) Also, make sure templates don't have copyrights. * Fix some more ORGANIZATIONNAMEs
81 lines
2.2 KiB
Dart
81 lines
2.2 KiB
Dart
// Copyright 2014 The Flutter Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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import 'package:flutter/material.dart';
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import 'package:flutter_driver/driver_extension.dart';
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/// This sample application creates a hard to render frame, causing the
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/// driver script to race the GPU thread. If the driver script wins the
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/// race, it will screenshot the previous frame. If the GPU thread wins
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/// it, it will screenshot the latest frame.
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void main() {
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enableFlutterDriverExtension();
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runApp(Toggler());
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}
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class Toggler extends StatefulWidget {
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@override
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State<Toggler> createState() => TogglerState();
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}
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class TogglerState extends State<Toggler> {
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bool _visible = false;
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@override
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Widget build(BuildContext context) {
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return MaterialApp(
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home: Scaffold(
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appBar: AppBar(
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title: const Text('FlutterDriver test'),
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),
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body: Material(
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child: Column(
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children: <Widget>[
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FlatButton(
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key: const ValueKey<String>('toggle'),
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child: const Text('Toggle visibility'),
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onPressed: () {
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setState(() {
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_visible = !_visible;
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});
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},
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),
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Expanded(
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child: ListView(
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children: _buildRows(_visible ? 10 : 0),
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),
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),
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],
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),
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),
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),
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);
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}
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}
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List<Widget> _buildRows(int count) {
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return List<Widget>.generate(count, (int i) {
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return Row(
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children: _buildCells(i / count),
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);
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});
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}
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/// Builds cells that are known to take time to render causing a delay on the
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/// GPU thread.
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List<Widget> _buildCells(double epsilon) {
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return List<Widget>.generate(15, (int i) {
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return Expanded(
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child: Material(
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// A magic color that the test will be looking for on the screenshot.
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color: const Color(0xffff0102),
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borderRadius: BorderRadius.all(Radius.circular(i.toDouble() + epsilon)),
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elevation: 5.0,
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child: const SizedBox(height: 10.0, width: 10.0),
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),
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);
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});
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}
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