mirror of
https://github.com/flutter/flutter
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e4b1eab854
Most of the remaining widget examples are actually manual tests. This patch moves them into //dev/manual_tests. A couple are examples of using services, which I've moved to //examples/layers/services. The remainder are out-dated and are removed by this patch.
244 lines
5.6 KiB
Dart
244 lines
5.6 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 'dart:math' as math;
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import 'package:flutter/material.dart';
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class LauncherData {
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const LauncherData({ this.url, this.title });
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final String url;
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final String title;
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}
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const List<LauncherData> _kLauncherData = const <LauncherData>[
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const LauncherData(
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url: 'mojo:noodles_view',
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title: 'Noodles'
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),
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const LauncherData(
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url: 'mojo:shapes_view',
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title: 'Shapes'
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),
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];
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const Size _kInitialWindowSize = const Size(200.0, 200.0);
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const double _kWindowPadding = 10.0;
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enum WindowSide {
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topCenter,
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topRight,
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bottomRight,
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}
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class WindowDecoration extends StatelessComponent {
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WindowDecoration({
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Key key,
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this.side,
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this.color,
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this.onTap,
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this.onPanUpdate
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}) : super(key: key);
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final WindowSide side;
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final Color color;
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final GestureTapCallback onTap;
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final GesturePanUpdateCallback onPanUpdate;
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Widget build(BuildContext context) {
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double top, right, bottom, left, width, height;
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height = _kWindowPadding * 2.0;
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if (side == WindowSide.topCenter || side == WindowSide.topRight)
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top = 0.0;
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if (side == WindowSide.topRight || side == WindowSide.bottomRight) {
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right = 0.0;
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width = _kWindowPadding * 2.0;
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}
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if (side == WindowSide.topCenter) {
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left = _kWindowPadding;
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right = _kWindowPadding;
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}
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if (side == WindowSide.bottomRight)
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bottom = 0.0;
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return new Positioned(
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top: top,
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right: right,
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bottom: bottom,
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left: left,
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width: width,
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height: height,
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child: new GestureDetector(
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onTap: onTap,
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onPanUpdate: onPanUpdate,
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child: new Container(
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decoration: new BoxDecoration(
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backgroundColor: color
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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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class Window extends StatefulComponent {
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Window({ Key key, this.child, this.onClose }) : super(key: key);
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final ChildViewConnection child;
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final ValueChanged<ChildViewConnection> onClose;
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_WindowState createState() => new _WindowState();
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}
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class _WindowState extends State<Window> {
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Offset _offset = Offset.zero;
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Size _size = _kInitialWindowSize;
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void _handleResizerDrag(Offset delta) {
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setState(() {
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_size = new Size(
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math.max(0.0, _size.width + delta.dx),
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math.max(0.0, _size.height + delta.dy)
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);
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});
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}
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void _handleRepositionDrag(Offset delta) {
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setState(() {
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_offset += delta;
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});
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}
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void _handleClose() {
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config.onClose(config.child);
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}
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Widget build(BuildContext context) {
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return new Positioned(
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left: _offset.dx,
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top: _offset.dy,
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width: _size.width + _kWindowPadding * 2.0,
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height: _size.height + _kWindowPadding * 2.0,
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child: new Stack(
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children: <Widget>[
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new WindowDecoration(
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side: WindowSide.topCenter,
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onPanUpdate: _handleRepositionDrag,
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color: Colors.green[200]
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),
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new WindowDecoration(
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side: WindowSide.topRight,
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onTap: _handleClose,
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color: Colors.red[200]
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),
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new WindowDecoration(
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side: WindowSide.bottomRight,
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onPanUpdate: _handleResizerDrag,
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color: Colors.blue[200]
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),
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new Container(
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padding: const EdgeDims.all(_kWindowPadding),
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child: new Material(
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elevation: 8,
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child: new ChildView(child: config.child)
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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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class LauncherItem extends StatelessComponent {
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LauncherItem({
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Key key,
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this.url,
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this.child,
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this.onLaunch
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}) : super(key: key);
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final String url;
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final Widget child;
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final ValueChanged<ChildViewConnection> onLaunch;
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Widget build(BuildContext context) {
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return new RaisedButton(
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onPressed: () { onLaunch(new ChildViewConnection(url: url)); },
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child: child
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);
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}
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}
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class Launcher extends StatelessComponent {
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Launcher({ Key key, this.items }) : super(key: key);
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final List<Widget> items;
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Widget build(BuildContext context) {
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return new Row(
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justifyContent: FlexJustifyContent.center,
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children: items
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);
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}
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}
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class WindowManager extends StatefulComponent {
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_WindowManagerState createState() => new _WindowManagerState();
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}
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class _WindowManagerState extends State<WindowManager> {
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List<ChildViewConnection> _windows = <ChildViewConnection>[];
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void _handleLaunch(ChildViewConnection child) {
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setState(() {
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_windows.add(child);
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});
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}
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void _handleClose(ChildViewConnection child) {
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setState(() {
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_windows.remove(child);
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});
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}
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Widget build(BuildContext context) {
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return new Material(
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child: new Stack(
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children: <Widget>[
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new Positioned(
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left: 0.0,
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right: 0.0,
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bottom: 0.0,
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child: new Launcher(items: _kLauncherData.map((LauncherData data) {
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return new LauncherItem(
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url: data.url,
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onLaunch: _handleLaunch,
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child: new Text(data.title)
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);
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}).toList())
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)
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]..addAll(_windows.map((ChildViewConnection child) {
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return new Window(
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key: new ObjectKey(child),
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onClose: _handleClose,
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child: child
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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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void main() {
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runApp(new MaterialApp(
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title: 'Mozart',
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routes: <String, RouteBuilder>{ '/': (_) => new WindowManager() }
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));
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}
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