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Yuncong Zhang 6 年前
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共有 1 个文件被更改，包括 128 次插入 和 129 次删除
  1. 257
      Samples/UIWidgetsGallery/gallery/home.cs

257
Samples/UIWidgetsGallery/gallery/home.cs
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public static bool showPreviewBanner = true;
public override State createState() {
// return new _GalleryHomeState();
return null;
return new _GalleryHomeState();
// class _GalleryHomeState : SingleTickerProviderStateMixin<GalleryHome> {
// static readonly GlobalKey<ScaffoldState> _scaffoldKey = GlobalKey<ScaffoldState>.key();
// AnimationController _controller;
// GalleryDemoCategory _category;
//
// static Widget _topHomeLayout(Widget currentChild, List<Widget> previousChildren) {
// List<Widget> children = previousChildren;
// if (currentChild != null) {
// children = children.ToList();
// children.Add(currentChild);
// }
//
// return new Stack(
// children: children,
// alignment: Alignment.topCenter
// );
// }
//
// static const AnimatedSwitcherLayoutBuilder _centerHomeLayout = AnimatedSwitcher.defaultLayoutBuilder;
//
// public override void initState() {
// base.initState();
// this._controller = new AnimationController(
// duration: new TimeSpan(0, 0, 0, 0, 600),
// debugLabel: "preview banner",
// vsync: this
// );
// this._controller.forward();
// }
//
// public override void dispose() {
// this._controller.dispose();
// base.dispose();
// }
//
// public override Widget build(BuildContext context) {
// ThemeData theme = Theme.of(context);
// bool isDark = theme.brightness == Brightness.dark;
// MediaQueryData media = MediaQuery.of(context);
// bool centerHome = media.orientation == Orientation.portrait && media.size.height < 800.0;
//
// Curve switchOutCurve = new Interval(0.4f, 1.0f, curve: Curves.fastOutSlowIn);
// Curve switchInCurve = new Interval(0.4f, 1.0f, curve: Curves.fastOutSlowIn);
//
// Widget home = new Scaffold(
// key: _scaffoldKey,
// backgroundColor: isDark ? HomeUtils._kUIWidgetsBlue : theme.primaryColor,
// body: new SafeArea(
// bottom: false,
// child: new WillPopScope(
// onWillPop: () => {
// // Pop the category page if Android back button is pressed.
// if (this._category != null) {
// this.setState(() => this._category = null);
// return Promise<bool>.Resolved(false);
// }
// return Promise<bool>.Resolved(true);
// },
// child: new Backdrop(
// backTitle: new Text("Options"),
// backLayer: this.widget.optionsPage,
// frontAction: new AnimatedSwitcher(
// duration: HomeUtils._kFrontLayerSwitchDuration,
// switchOutCurve: switchOutCurve,
// switchInCurve: switchInCurve,
// child: this._category == null
// ? new _UIWidgetsLogo()
// : new IconButton(
// icon: new BackButtonIcon(),
// tooltip: "Back",
// onPressed: () => this.setState(() => this._category = null)
// )
// ),
// frontTitle: new AnimatedSwitcher(
// duration: HomeUtils._kFrontLayerSwitchDuration,
// child: this._category == null
// ? new Text("Flutter gallery")
// : new Text(this._category.name)
// ),
// frontHeading: this.widget.testMode ? null : new Container(height: 24.0f),
// frontLayer: new AnimatedSwitcher(
// duration: HomeUtils._kFrontLayerSwitchDuration,
// switchOutCurve: switchOutCurve,
// switchInCurve: switchInCurve,
// layoutBuilder: centerHome ? _centerHomeLayout : _topHomeLayout,
// child: this._category != null
// ? new _DemosPage(_category)
// : new _CategoriesPage(
// categories: DemoUtils.kAllGalleryDemoCategories,
// onCategoryTap: (GalleryDemoCategory category) => {
// this.setState(() => this._category = category);
// }
// )
// )
// )
// )
// )
// );
//
// D.assert(() => {
// GalleryHome.showPreviewBanner = false;
// return true;
// });
//
// if (GalleryHome.showPreviewBanner) {
// home = new Stack(
// fit: StackFit.expand,
// children: new List<Widget> {
// home,
// new FadeTransition(
// opacity: new CurvedAnimation(parent: this._controller, curve: Curves.easeInOut),
// child: new Banner(
// message: "PREVIEW",
// location: BannerLocation.topEnd
// )
// )
// }
// );
// }
// home = new AnnotatedRegion<SystemUiOverlayStyle>(
// child: home,
// value: SystemUiOverlayStyle.light
// );
//
// return home;
// }
// }
class _GalleryHomeState : SingleTickerProviderStateMixin<GalleryHome> {
static readonly GlobalKey<ScaffoldState> _scaffoldKey = GlobalKey<ScaffoldState>.key();
AnimationController _controller;
GalleryDemoCategory _category;
static Widget _topHomeLayout(Widget currentChild, List<Widget> previousChildren) {
List<Widget> children = previousChildren;
if (currentChild != null) {
children = children.ToList();
children.Add(currentChild);
}
return new Stack(
children: children,
alignment: Alignment.topCenter
);
}
public static AnimatedSwitcherLayoutBuilder _centerHomeLayout = AnimatedSwitcher.defaultLayoutBuilder;
public override void initState() {
base.initState();
this._controller = new AnimationController(
duration: new TimeSpan(0, 0, 0, 0, 600),
debugLabel: "preview banner",
vsync: this
);
this._controller.forward();
}
public override void dispose() {
this._controller.dispose();
base.dispose();
}
public override Widget build(BuildContext context) {
ThemeData theme = Theme.of(context);
bool isDark = theme.brightness == Brightness.dark;
MediaQueryData media = MediaQuery.of(context);
bool centerHome = media.orientation == Orientation.portrait && media.size.height < 800.0;
Curve switchOutCurve = new Interval(0.4f, 1.0f, curve: Curves.fastOutSlowIn);
Curve switchInCurve = new Interval(0.4f, 1.0f, curve: Curves.fastOutSlowIn);
Widget home = new Scaffold(
key: _scaffoldKey,
backgroundColor: isDark ? HomeUtils._kUIWidgetsBlue : theme.primaryColor,
body: new SafeArea(
bottom: false,
child: new WillPopScope(
onWillPop: () => {
// Pop the category page if Android back button is pressed.
if (this._category != null) {
this.setState(() => this._category = null);
return Promise<bool>.Resolved(false);
}
return Promise<bool>.Resolved(true);
},
child: new Backdrop(
backTitle: new Text("Options"),
backLayer: this.widget.optionsPage,
frontAction: new AnimatedSwitcher(
duration: HomeUtils._kFrontLayerSwitchDuration,
switchOutCurve: switchOutCurve,
switchInCurve: switchInCurve,
child: this._category == null
? new _UIWidgetsLogo()
: new IconButton(
icon: new BackButtonIcon(),
tooltip: "Back",
onPressed: () => this.setState(() => this._category = null)
)
),
frontTitle: new AnimatedSwitcher(
duration: HomeUtils._kFrontLayerSwitchDuration,
child: this._category == null
? new Text("Flutter gallery")
: new Text(this._category.name)
),
frontHeading: this.widget.testMode ? null : new Container(height: 24.0f),
frontLayer: new AnimatedSwitcher(
duration: HomeUtils._kFrontLayerSwitchDuration,
switchOutCurve: switchOutCurve,
switchInCurve: switchInCurve,
layoutBuilder: centerHome ? _centerHomeLayout : _topHomeLayout,
child: this._category != null
? new _DemosPage(_category)
: new _CategoriesPage(
categories: DemoUtils.kAllGalleryDemoCategories,
onCategoryTap: (GalleryDemoCategory category) => {
this.setState(() => this._category = category);
}
)
)
)
)
)
);
D.assert(() => {
GalleryHome.showPreviewBanner = false;
return true;
});
if (GalleryHome.showPreviewBanner) {
home = new Stack(
fit: StackFit.expand,
children: new List<Widget> {
home,
new FadeTransition(
opacity: new CurvedAnimation(parent: this._controller, curve: Curves.easeInOut),
child: new Banner(
message: "PREVIEW",
location: BannerLocation.topEnd
)
)
}
);
}
home = new AnnotatedRegion<SystemUiOverlayStyle>(
child: home,
value: SystemUiOverlayStyle.light
);
return home;
}
}
}
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