106 lines
3.4 KiB
Dart
106 lines
3.4 KiB
Dart
// Copyright 2016 The Chromium 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/widgets.dart';
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import 'demo.dart';
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class GallerySection extends StatelessComponent {
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GallerySection({ this.title, this.image, this.colors, this.demos });
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final String title;
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final String image;
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final Map<int, Color> colors;
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final List<GalleryDemo> demos;
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void showDemo(GalleryDemo demo, BuildContext context, ThemeData theme) {
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Navigator.push(context, new MaterialPageRoute<Null>(
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builder: (BuildContext context) {
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Widget child = (demo.builder == null) ? null : demo.builder();
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return new Theme(data: theme, child: child);
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}
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));
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}
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void showDemos(BuildContext context) {
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final ThemeData theme = new ThemeData(
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brightness: Theme.of(context).brightness,
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primarySwatch: colors
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);
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final double appBarHeight = 200.0;
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final Key scrollableKey = new ValueKey<String>(title); // assume section titles differ
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Navigator.push(context, new MaterialPageRoute<Null>(
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builder: (BuildContext context) {
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return new Theme(
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data: theme,
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child: new Scaffold(
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appBarHeight: appBarHeight,
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appBarBehavior: AppBarBehavior.scroll,
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scrollableKey: scrollableKey,
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toolBar: new ToolBar(
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flexibleSpace: (BuildContext context) => new FlexibleSpaceBar(title: new Text(title))
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),
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body: new Material(
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child: new MaterialList(
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scrollableKey: scrollableKey,
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scrollablePadding: new EdgeInsets.only(top: appBarHeight),
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type: MaterialListType.oneLine,
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children: (demos ?? const <GalleryDemo>[]).map((GalleryDemo demo) {
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return new ListItem(
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primary: new Text(demo.title),
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onTap: () { showDemo(demo, context, theme); }
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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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Widget build (BuildContext context) {
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final ThemeData theme = new ThemeData(
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brightness: Theme.of(context).brightness,
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primarySwatch: colors
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);
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final TextStyle titleTextStyle = theme.textTheme.title.copyWith(
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color: Colors.white
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);
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return new Flexible(
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child: new GestureDetector(
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behavior: HitTestBehavior.opaque,
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onTap: () { showDemos(context); },
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child: new Container(
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height: 256.0,
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margin: const EdgeInsets.all(4.0),
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decoration: new BoxDecoration(backgroundColor: theme.primaryColor),
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child: new Column(
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children: <Widget>[
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new Flexible(
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child: new Padding(
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padding: const EdgeInsets.symmetric(horizontal: 12.0),
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child: new AssetImage(
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name: image,
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alignment: const FractionalOffset(0.5, 0.5),
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fit: ImageFit.contain
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)
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)
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),
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new Padding(
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padding: const EdgeInsets.all(16.0),
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child: new Align(
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alignment: const FractionalOffset(0.0, 1.0),
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child: new Text(title, style: titleTextStyle)
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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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