5491c8c146
This auto-formats all *.dart files in the repository outside of the `engine` subdirectory and enforces that these files stay formatted with a presubmit check. **Reviewers:** Please carefully review all the commits except for the one titled "formatted". The "formatted" commit was auto-generated by running `dev/tools/format.sh -a -f`. The other commits were hand-crafted to prepare the repo for the formatting change. I recommend reviewing the commits one-by-one via the "Commits" tab and avoiding Github's "Files changed" tab as it will likely slow down your browser because of the size of this PR. --------- Co-authored-by: Kate Lovett <katelovett@google.com> Co-authored-by: LongCatIsLooong <31859944+LongCatIsLooong@users.noreply.github.com>
80 lines
2.2 KiB
Dart
80 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 'dart:async';
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import 'package:flutter/material.dart';
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import 'picture_cache.dart';
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class ShaderMaskCachePage extends StatefulWidget {
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const ShaderMaskCachePage({super.key});
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@override
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State<ShaderMaskCachePage> createState() => _ShaderMaskCachePageState();
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}
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class _ShaderMaskCachePageState extends State<ShaderMaskCachePage> with TickerProviderStateMixin {
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final ScrollController _controller = ScrollController();
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@override
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void initState() {
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super.initState();
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_controller.addListener(() {
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if (_controller.offset < 10) {
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_controller.animateTo(
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100,
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duration: const Duration(milliseconds: 1000),
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curve: Curves.ease,
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);
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} else if (_controller.offset > 90) {
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_controller.animateTo(0, duration: const Duration(milliseconds: 1000), curve: Curves.ease);
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}
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});
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Timer(const Duration(milliseconds: 500), () {
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_controller.animateTo(100, duration: const Duration(milliseconds: 1000), curve: Curves.ease);
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});
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}
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@override
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Widget build(BuildContext context) {
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return Scaffold(
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backgroundColor: Colors.lightBlue,
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body: ListView(
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controller: _controller,
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children: <Widget>[
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const SizedBox(height: 100),
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buildShaderMask(0),
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const SizedBox(height: 10),
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buildShaderMask(1),
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const SizedBox(height: 1000),
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],
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),
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);
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}
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Widget buildShaderMask(int index) {
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return ShaderMask(
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shaderCallback: (Rect bounds) {
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return const RadialGradient(
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center: Alignment.topLeft,
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radius: 1.0,
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colors: <Color>[Colors.yellow, Colors.red],
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tileMode: TileMode.mirror,
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).createShader(bounds);
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},
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child: Container(
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clipBehavior: Clip.antiAlias,
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decoration: const BoxDecoration(
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boxShadow: <BoxShadow>[BoxShadow(color: Colors.white, blurRadius: 5.0)],
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),
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child: ListItem(index: index),
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),
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);
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}
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@override
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void dispose() {
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_controller.dispose();
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super.dispose();
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}
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}
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