1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
// 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 'package:flutter/material.dart';
import '../../gallery/demo.dart';
class ElevationDemo extends StatefulWidget {
static const String routeName = '/material/elevation';
@override
State<StatefulWidget> createState() => _ElevationDemoState();
}
class _ElevationDemoState extends State<ElevationDemo> {
bool _showElevation = true;
List<Widget> buildCards() {
const List<double> elevations = <double>[
0.0,
1.0,
2.0,
3.0,
4.0,
5.0,
8.0,
16.0,
24.0,
];
return elevations.map<Widget>((double elevation) {
return Center(
child: Card(
margin: const EdgeInsets.all(20.0),
elevation: _showElevation ? elevation : 0.0,
child: SizedBox(
height: 100.0,
width: 100.0,
child: Center(
child: Text('${elevation.toStringAsFixed(0)} pt'),
),
),
),
);
}).toList();
}
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: const Text('Elevation'),
actions: <Widget>[
MaterialDemoDocumentationButton(ElevationDemo.routeName),
IconButton(
icon: const Icon(Icons.sentiment_very_satisfied),
onPressed: () {
setState(() => _showElevation = !_showElevation);
},
),
],
),
body: Scrollbar(child: ListView(children: buildCards())),
);
}
}