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>
95 lines
2.8 KiB
Dart
95 lines
2.8 KiB
Dart
// Copyright 2014 The Flutter Authors. 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:async';
|
|
import 'dart:ui';
|
|
import 'package:flutter/material.dart';
|
|
import 'picture_cache.dart';
|
|
|
|
class ClipperCachePage extends StatefulWidget {
|
|
const ClipperCachePage({super.key});
|
|
@override
|
|
State<ClipperCachePage> createState() => _ClipperCachePageState();
|
|
}
|
|
|
|
class _ClipperCachePageState extends State<ClipperCachePage> with TickerProviderStateMixin {
|
|
final double _animateOffset = 100;
|
|
final ScrollController _controller = ScrollController();
|
|
final bool _isComplex = true;
|
|
late double _topMargin;
|
|
|
|
@override
|
|
void initState() {
|
|
super.initState();
|
|
_controller.addListener(() {
|
|
if (_controller.offset < 10) {
|
|
_controller.animateTo(
|
|
_animateOffset,
|
|
duration: const Duration(milliseconds: 1000),
|
|
curve: Curves.ease,
|
|
);
|
|
} else if (_controller.offset > _animateOffset - 10) {
|
|
_controller.animateTo(0, duration: const Duration(milliseconds: 1000), curve: Curves.ease);
|
|
}
|
|
});
|
|
Timer(const Duration(milliseconds: 500), () {
|
|
_controller.animateTo(
|
|
_animateOffset,
|
|
duration: const Duration(milliseconds: 1000),
|
|
curve: Curves.ease,
|
|
);
|
|
});
|
|
}
|
|
|
|
@override
|
|
void didChangeDependencies() {
|
|
super.didChangeDependencies();
|
|
|
|
const double itemHeight = 140;
|
|
final FlutterView view = View.of(context);
|
|
_topMargin = (view.physicalSize.height / view.devicePixelRatio - itemHeight * 3) / 2;
|
|
if (_topMargin < 0) {
|
|
_topMargin = 0;
|
|
}
|
|
}
|
|
|
|
@override
|
|
Widget build(BuildContext context) {
|
|
return Scaffold(
|
|
backgroundColor: Colors.blue,
|
|
body: ListView(
|
|
controller: _controller,
|
|
children: <Widget>[
|
|
SizedBox(height: _topMargin),
|
|
ClipPath(clipBehavior: Clip.antiAliasWithSaveLayer, child: _makeChild(0, _isComplex)),
|
|
ClipRect(clipBehavior: Clip.antiAliasWithSaveLayer, child: _makeChild(1, _isComplex)),
|
|
ClipRRect(clipBehavior: Clip.antiAliasWithSaveLayer, child: _makeChild(2, _isComplex)),
|
|
const SizedBox(height: 1000),
|
|
],
|
|
),
|
|
);
|
|
}
|
|
|
|
Widget _makeChild(int itemIndex, bool complex) {
|
|
final BoxDecoration decoration = BoxDecoration(
|
|
color: Colors.white70,
|
|
boxShadow: const <BoxShadow>[BoxShadow(blurRadius: 5.0)],
|
|
borderRadius: BorderRadius.circular(5.0),
|
|
);
|
|
return RepaintBoundary(
|
|
child: Container(
|
|
margin: const EdgeInsets.fromLTRB(10, 5, 10, 5),
|
|
decoration: complex ? decoration : null,
|
|
child: ListItem(index: itemIndex),
|
|
),
|
|
);
|
|
}
|
|
|
|
@override
|
|
void dispose() {
|
|
_controller.dispose();
|
|
super.dispose();
|
|
}
|
|
}
|