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e502e9c8f8
Anywhere that accepted IconData now accepts either an Icon or an ImageIcon. Places that used to take an IconData in an `icon` argument, notably IconButton and DrawerItem, now take a Widget in that slot. You can wrap the value that used to be passed in in an Icon constructor to get the same result. Icon itself now takes the icon as a positional argument, for brevity. ThemeData now has an iconTheme as well as a primaryIconTheme, the same way it has had a textTheme and primaryTextTheme for a while. IconTheme.of() always returns a value now (though that value itself may have nulls in it). It defaults to the ThemeData.iconTheme. IconThemeData.fallback() is a new method that returns an icon theme data structure with all fields filled in. IconTheme.merge() is a new constructor that takes a context and creates a widget that mixes in the new values with the inherited values. Most places that introduced an IconTheme widget now use IconTheme.merge. IconThemeData.merge and IconThemeData.copyWith act in a way analogous to the similarly-named members of TextStyle. ImageIcon is introduced. It acts like Icon but takes an ImageProvider instead of an IconData. Also: Fix the analyzer to actually check the stocks app.
112 lines
3.2 KiB
Dart
112 lines
3.2 KiB
Dart
// Copyright 2015 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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enum TabsDemoStyle {
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iconsAndText,
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iconsOnly,
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textOnly
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}
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class ScrollableTabsDemo extends StatefulWidget {
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static const String routeName = '/scrollable-tabs';
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@override
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ScrollableTabsDemoState createState() => new ScrollableTabsDemoState();
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}
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class ScrollableTabsDemoState extends State<ScrollableTabsDemo> {
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final List<IconData> icons = <IconData>[
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Icons.event,
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Icons.home,
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Icons.android,
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Icons.alarm,
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Icons.face,
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Icons.language,
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];
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final Map<IconData, String> labels = <IconData, String>{
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Icons.event: 'EVENT',
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Icons.home: 'HOME',
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Icons.android: 'ANDROID',
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Icons.alarm: 'ALARM',
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Icons.face: 'FACE',
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Icons.language: 'LANGUAGE',
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};
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TabsDemoStyle _demoStyle = TabsDemoStyle.iconsAndText;
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void changeDemoStyle(TabsDemoStyle style) {
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setState(() {
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_demoStyle = style;
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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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final Color iconColor = Theme.of(context).accentColor;
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return new TabBarSelection<IconData>(
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values: icons,
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child: new Scaffold(
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appBar: new AppBar(
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title: new Text('Scrollable tabs'),
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actions: <Widget>[
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new PopupMenuButton<TabsDemoStyle>(
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onSelected: changeDemoStyle,
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itemBuilder: (BuildContext context) => <PopupMenuItem<TabsDemoStyle>>[
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new PopupMenuItem<TabsDemoStyle>(
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value: TabsDemoStyle.iconsAndText,
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child: new Text('Icons and text')
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),
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new PopupMenuItem<TabsDemoStyle>(
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value: TabsDemoStyle.iconsOnly,
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child: new Text('Icons only')
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),
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new PopupMenuItem<TabsDemoStyle>(
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value: TabsDemoStyle.textOnly,
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child: new Text('Text only')
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),
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]
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)
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],
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bottom: new TabBar<IconData>(
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isScrollable: true,
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labels: new Map<IconData, TabLabel>.fromIterable(
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icons,
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value: (IconData icon) {
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switch(_demoStyle) {
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case TabsDemoStyle.iconsAndText:
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return new TabLabel(text: labels[icon], icon: new Icon(icon));
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case TabsDemoStyle.iconsOnly:
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return new TabLabel(icon: new Icon(icon));
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case TabsDemoStyle.textOnly:
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return new TabLabel(text: labels[icon]);
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}
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}
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)
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)
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),
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body: new TabBarView<IconData>(
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children: icons.map((IconData icon) {
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return new Container(
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key: new ObjectKey(icon),
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padding: const EdgeInsets.all(12.0),
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child:new Card(
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child: new Center(
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child: new Icon(
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icon,
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color: iconColor,
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size: 128.0
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)
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)
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)
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);
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}).toList()
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)
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)
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);
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}
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}
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