629 lines
20 KiB
Dart
629 lines
20 KiB
Dart
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import 'package:flutter/material.dart';
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import 'package:flutter/scheduler.dart';
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import 'package:provider/provider.dart';
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import '../models/models.dart';
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typedef CloseContainerActionCallback<S> = void Function({S? returnValue});
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typedef OpenContainerBuilder<S> = Widget Function(
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BuildContext context,
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CloseContainerActionCallback<S> action,
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);
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typedef CloseContainerBuilder = Widget Function(
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BuildContext context,
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VoidCallback action,
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);
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enum ContainerTransitionType {
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fade,
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fadeThrough,
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}
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typedef ClosedCallback<S> = void Function(S data);
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@optionalTypeArgs
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class OpenContainer<T extends Object?> extends StatefulWidget {
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const OpenContainer({
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super.key,
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this.middleColor,
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this.onClosed,
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required this.closedBuilder,
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required this.openBuilder,
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this.tappable = true,
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this.transitionDuration = const Duration(milliseconds: 300),
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this.transitionType = ContainerTransitionType.fade,
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this.useRootNavigator = false,
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this.routeSettings,
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this.clipBehavior = Clip.antiAlias,
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});
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final Color? middleColor;
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final ClosedCallback<T?>? onClosed;
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final CloseContainerBuilder closedBuilder;
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final OpenContainerBuilder<T> openBuilder;
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final bool tappable;
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final Duration transitionDuration;
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final ContainerTransitionType transitionType;
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final bool useRootNavigator;
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final RouteSettings? routeSettings;
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final Clip clipBehavior;
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@override
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State<OpenContainer<T?>> createState() => _OpenContainerState<T>();
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}
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class _OpenContainerState<T> extends State<OpenContainer<T?>> {
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final GlobalKey<_HideableState> _hideableKey = GlobalKey<_HideableState>();
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final GlobalKey _closedBuilderKey = GlobalKey();
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Future<void> openContainer() async {
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final Color middleColor =
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widget.middleColor ?? Theme.of(context).canvasColor;
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final T? data = await Navigator.of(
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context,
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rootNavigator: widget.useRootNavigator,
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).push(_OpenContainerRoute<T>(
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middleColor: middleColor,
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closedBuilder: widget.closedBuilder,
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openBuilder: widget.openBuilder,
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hideableKey: _hideableKey,
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closedBuilderKey: _closedBuilderKey,
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transitionDuration: widget.transitionDuration,
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transitionType: widget.transitionType,
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useRootNavigator: widget.useRootNavigator,
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routeSettings: widget.routeSettings,
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));
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if (widget.onClosed != null) {
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widget.onClosed!(data);
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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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return _Hideable(
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key: _hideableKey,
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child: GestureDetector(
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onTap: widget.tappable ? openContainer : null,
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child: Material(
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clipBehavior: widget.clipBehavior,
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child: Builder(
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key: _closedBuilderKey,
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builder: (BuildContext context) {
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return widget.closedBuilder(context, openContainer);
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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 _Hideable extends StatefulWidget {
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const _Hideable({
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super.key,
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required this.child,
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});
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final Widget child;
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@override
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State<_Hideable> createState() => _HideableState();
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}
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class _HideableState extends State<_Hideable> {
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Size? get placeholderSize => _placeholderSize;
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Size? _placeholderSize;
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set placeholderSize(Size? value) {
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if (_placeholderSize == value) {
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return;
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}
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setState(() {
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_placeholderSize = value;
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});
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}
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bool get isVisible => _visible;
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bool _visible = true;
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set isVisible(bool value) {
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if (_visible == value) {
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return;
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}
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setState(() {
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_visible = value;
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});
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}
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bool get isInTree => _placeholderSize == null;
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@override
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Widget build(BuildContext context) {
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if (_placeholderSize != null) {
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return SizedBox.fromSize(size: _placeholderSize);
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}
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return Visibility(
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visible: _visible,
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maintainSize: true,
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maintainState: true,
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maintainAnimation: true,
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child: widget.child,
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);
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}
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}
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class _OpenContainerRoute<T> extends ModalRoute<T> {
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_OpenContainerRoute({
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required this.middleColor,
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required this.closedBuilder,
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required this.openBuilder,
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required this.hideableKey,
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required this.closedBuilderKey,
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required this.transitionDuration,
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required this.transitionType,
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required this.useRootNavigator,
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required RouteSettings? routeSettings,
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}) : _closedOpacityTween = _getClosedOpacityTween(transitionType),
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_openOpacityTween = _getOpenOpacityTween(transitionType),
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super(settings: routeSettings);
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static _FlippableTweenSequence<Color?> _getColorTween({
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required ContainerTransitionType transitionType,
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required Color closedColor,
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required Color openColor,
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required Color middleColor,
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}) {
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switch (transitionType) {
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case ContainerTransitionType.fade:
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return _FlippableTweenSequence<Color?>(
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<TweenSequenceItem<Color?>>[
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TweenSequenceItem<Color>(
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tween: ConstantTween<Color>(closedColor),
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weight: 1 / 5,
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),
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TweenSequenceItem<Color?>(
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tween: ColorTween(begin: closedColor, end: openColor),
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weight: 1 / 5,
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),
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TweenSequenceItem<Color>(
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tween: ConstantTween<Color>(openColor),
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weight: 3 / 5,
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),
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],
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);
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case ContainerTransitionType.fadeThrough:
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return _FlippableTweenSequence<Color?>(
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<TweenSequenceItem<Color?>>[
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TweenSequenceItem<Color?>(
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tween: ColorTween(begin: closedColor, end: middleColor),
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weight: 1 / 5,
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),
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TweenSequenceItem<Color?>(
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tween: ColorTween(begin: middleColor, end: openColor),
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weight: 4 / 5,
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),
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],
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);
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}
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}
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static _FlippableTweenSequence<double> _getClosedOpacityTween(
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ContainerTransitionType transitionType) {
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switch (transitionType) {
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case ContainerTransitionType.fade:
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return _FlippableTweenSequence<double>(
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<TweenSequenceItem<double>>[
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TweenSequenceItem<double>(
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tween: ConstantTween<double>(1.0),
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weight: 1,
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),
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],
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);
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case ContainerTransitionType.fadeThrough:
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return _FlippableTweenSequence<double>(
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<TweenSequenceItem<double>>[
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TweenSequenceItem<double>(
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tween: Tween<double>(begin: 1.0, end: 0.0),
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weight: 1 / 5,
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),
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TweenSequenceItem<double>(
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tween: ConstantTween<double>(0.0),
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weight: 4 / 5,
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),
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],
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);
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}
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}
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static _FlippableTweenSequence<double> _getOpenOpacityTween(
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ContainerTransitionType transitionType) {
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switch (transitionType) {
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case ContainerTransitionType.fade:
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return _FlippableTweenSequence<double>(
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<TweenSequenceItem<double>>[
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TweenSequenceItem<double>(
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tween: ConstantTween<double>(0.0),
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weight: 1 / 5,
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),
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TweenSequenceItem<double>(
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tween: Tween<double>(begin: 0.0, end: 1.0),
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weight: 1 / 5,
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),
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TweenSequenceItem<double>(
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tween: ConstantTween<double>(1.0),
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weight: 3 / 5,
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),
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],
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);
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case ContainerTransitionType.fadeThrough:
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return _FlippableTweenSequence<double>(
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<TweenSequenceItem<double>>[
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TweenSequenceItem<double>(
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tween: ConstantTween<double>(0.0),
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weight: 1 / 5,
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),
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TweenSequenceItem<double>(
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tween: Tween<double>(begin: 0.0, end: 1.0),
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weight: 4 / 5,
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),
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],
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);
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}
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}
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final Color middleColor;
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final CloseContainerBuilder closedBuilder;
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final OpenContainerBuilder<T> openBuilder;
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final GlobalKey<_HideableState> hideableKey;
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final GlobalKey closedBuilderKey;
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@override
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final Duration transitionDuration;
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final ContainerTransitionType transitionType;
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final bool useRootNavigator;
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final _FlippableTweenSequence<double> _closedOpacityTween;
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final _FlippableTweenSequence<double> _openOpacityTween;
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late _FlippableTweenSequence<Color?> _colorTween;
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static final TweenSequence<Color?> _scrimFadeInTween = TweenSequence<Color?>(
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<TweenSequenceItem<Color?>>[
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TweenSequenceItem<Color?>(
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tween: ColorTween(begin: Colors.transparent, end: Colors.black54),
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weight: 1 / 5,
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),
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TweenSequenceItem<Color>(
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tween: ConstantTween<Color>(Colors.black54),
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weight: 4 / 5,
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),
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],
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);
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static final Tween<Color?> _scrimFadeOutTween = ColorTween(
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begin: Colors.transparent,
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end: Colors.black54,
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);
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final GlobalKey _openBuilderKey = GlobalKey();
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final RectTween _rectTween = RectTween();
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AnimationStatus? _lastAnimationStatus;
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AnimationStatus? _currentAnimationStatus;
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@override
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TickerFuture didPush() {
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_takeMeasurements(navigatorContext: hideableKey.currentContext!);
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animation!.addStatusListener((AnimationStatus status) {
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_lastAnimationStatus = _currentAnimationStatus;
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_currentAnimationStatus = status;
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switch (status) {
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case AnimationStatus.dismissed:
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_toggleHideable(hide: false);
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break;
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case AnimationStatus.completed:
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_toggleHideable(hide: true);
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break;
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case AnimationStatus.forward:
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case AnimationStatus.reverse:
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break;
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}
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});
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return super.didPush();
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}
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@override
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bool didPop(T? result) {
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_takeMeasurements(
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navigatorContext: subtreeContext!,
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delayForSourceRoute: true,
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);
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return super.didPop(result);
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}
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@override
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void dispose() {
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if (hideableKey.currentState?.isVisible == false) {
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SchedulerBinding.instance
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.addPostFrameCallback((Duration d) => _toggleHideable(hide: false));
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}
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super.dispose();
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}
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void _toggleHideable({required bool hide}) {
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if (hideableKey.currentState != null) {
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hideableKey.currentState!
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..placeholderSize = null
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..isVisible = !hide;
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}
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}
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void _takeMeasurements({
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required BuildContext navigatorContext,
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bool delayForSourceRoute = false,
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}) {
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final RenderBox navigator = Navigator.of(
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navigatorContext,
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rootNavigator: useRootNavigator,
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).context.findRenderObject()! as RenderBox;
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final Size navSize = _getSize(navigator);
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_rectTween.end = Offset.zero & navSize;
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void takeMeasurementsInSourceRoute([Duration? _]) {
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if (!navigator.attached || hideableKey.currentContext == null) {
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return;
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}
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_rectTween.begin = _getRect(hideableKey, navigator);
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hideableKey.currentState!.placeholderSize = _rectTween.begin!.size;
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}
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if (delayForSourceRoute) {
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SchedulerBinding.instance
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.addPostFrameCallback(takeMeasurementsInSourceRoute);
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} else {
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takeMeasurementsInSourceRoute();
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}
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}
|
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|
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Size _getSize(RenderBox render) {
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assert(render.hasSize);
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return render.size;
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}
|
||
|
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|
||
|
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Rect _getRect(GlobalKey key, RenderBox ancestor) {
|
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|
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assert(key.currentContext != null);
|
||
|
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assert(ancestor.hasSize);
|
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|
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final RenderBox render =
|
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|
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key.currentContext!.findRenderObject()! as RenderBox;
|
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|
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assert(render.hasSize);
|
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|
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return MatrixUtils.transformRect(
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|
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render.getTransformTo(ancestor),
|
||
|
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Offset.zero & render.size,
|
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|
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);
|
||
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}
|
||
|
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|
||
|
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bool get _transitionWasInterrupted {
|
||
|
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bool wasInProgress = false;
|
||
|
|
bool isInProgress = false;
|
||
|
|
|
||
|
|
switch (_currentAnimationStatus) {
|
||
|
|
case AnimationStatus.completed:
|
||
|
|
case AnimationStatus.dismissed:
|
||
|
|
isInProgress = false;
|
||
|
|
break;
|
||
|
|
case AnimationStatus.forward:
|
||
|
|
case AnimationStatus.reverse:
|
||
|
|
isInProgress = true;
|
||
|
|
break;
|
||
|
|
case null:
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
switch (_lastAnimationStatus) {
|
||
|
|
case AnimationStatus.completed:
|
||
|
|
case AnimationStatus.dismissed:
|
||
|
|
wasInProgress = false;
|
||
|
|
break;
|
||
|
|
case AnimationStatus.forward:
|
||
|
|
case AnimationStatus.reverse:
|
||
|
|
wasInProgress = true;
|
||
|
|
break;
|
||
|
|
case null:
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
return wasInProgress && isInProgress;
|
||
|
|
}
|
||
|
|
|
||
|
|
void closeContainer({T? returnValue}) {
|
||
|
|
Navigator.of(subtreeContext!).pop(returnValue);
|
||
|
|
}
|
||
|
|
|
||
|
|
@override
|
||
|
|
Widget buildPage(
|
||
|
|
BuildContext context,
|
||
|
|
Animation<double> animation,
|
||
|
|
Animation<double> secondaryAnimation,
|
||
|
|
) {
|
||
|
|
return Selector<Config, ThemeMode>(
|
||
|
|
selector: (_, config) => config.themeMode,
|
||
|
|
builder: (_, __, ___) {
|
||
|
|
debugPrint("[OpenContainerTheme] update===>");
|
||
|
|
_colorTween = _getColorTween(
|
||
|
|
transitionType: transitionType,
|
||
|
|
closedColor: Theme.of(context).colorScheme.background,
|
||
|
|
openColor: Theme.of(context).colorScheme.background,
|
||
|
|
middleColor: middleColor,
|
||
|
|
);
|
||
|
|
return Align(
|
||
|
|
alignment: Alignment.topLeft,
|
||
|
|
child: AnimatedBuilder(
|
||
|
|
animation: animation,
|
||
|
|
builder: (BuildContext context, Widget? child) {
|
||
|
|
if (animation.isCompleted) {
|
||
|
|
return SizedBox.expand(
|
||
|
|
child: Material(
|
||
|
|
child: Builder(
|
||
|
|
key: _openBuilderKey,
|
||
|
|
builder: (BuildContext context) {
|
||
|
|
return openBuilder(context, closeContainer);
|
||
|
|
},
|
||
|
|
),
|
||
|
|
),
|
||
|
|
);
|
||
|
|
}
|
||
|
|
|
||
|
|
final Animation<double> curvedAnimation = CurvedAnimation(
|
||
|
|
parent: animation,
|
||
|
|
curve: Curves.fastOutSlowIn,
|
||
|
|
reverseCurve: _transitionWasInterrupted
|
||
|
|
? null
|
||
|
|
: Curves.fastOutSlowIn.flipped,
|
||
|
|
);
|
||
|
|
TweenSequence<Color?>? colorTween;
|
||
|
|
TweenSequence<double>? closedOpacityTween, openOpacityTween;
|
||
|
|
Animatable<Color?>? scrimTween;
|
||
|
|
switch (animation.status) {
|
||
|
|
case AnimationStatus.dismissed:
|
||
|
|
case AnimationStatus.forward:
|
||
|
|
closedOpacityTween = _closedOpacityTween;
|
||
|
|
openOpacityTween = _openOpacityTween;
|
||
|
|
colorTween = _colorTween;
|
||
|
|
scrimTween = _scrimFadeInTween;
|
||
|
|
break;
|
||
|
|
case AnimationStatus.reverse:
|
||
|
|
if (_transitionWasInterrupted) {
|
||
|
|
closedOpacityTween = _closedOpacityTween;
|
||
|
|
openOpacityTween = _openOpacityTween;
|
||
|
|
colorTween = _colorTween;
|
||
|
|
scrimTween = _scrimFadeInTween;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
closedOpacityTween = _closedOpacityTween.flipped;
|
||
|
|
openOpacityTween = _openOpacityTween.flipped;
|
||
|
|
colorTween = _colorTween.flipped;
|
||
|
|
scrimTween = _scrimFadeOutTween;
|
||
|
|
break;
|
||
|
|
case AnimationStatus.completed:
|
||
|
|
assert(false); // Unreachable.
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
assert(colorTween != null);
|
||
|
|
assert(closedOpacityTween != null);
|
||
|
|
assert(openOpacityTween != null);
|
||
|
|
assert(scrimTween != null);
|
||
|
|
|
||
|
|
final Rect rect = _rectTween.evaluate(curvedAnimation)!;
|
||
|
|
return SizedBox.expand(
|
||
|
|
child: Container(
|
||
|
|
color: scrimTween!.evaluate(curvedAnimation),
|
||
|
|
child: Align(
|
||
|
|
alignment: Alignment.topLeft,
|
||
|
|
child: Transform.translate(
|
||
|
|
offset: Offset(rect.left, rect.top),
|
||
|
|
child: SizedBox(
|
||
|
|
width: rect.width,
|
||
|
|
height: rect.height,
|
||
|
|
child: Material(
|
||
|
|
clipBehavior: Clip.antiAlias,
|
||
|
|
animationDuration: Duration.zero,
|
||
|
|
color: colorTween!.evaluate(animation),
|
||
|
|
child: Stack(
|
||
|
|
fit: StackFit.passthrough,
|
||
|
|
children: <Widget>[
|
||
|
|
// Closed child fading out.
|
||
|
|
FittedBox(
|
||
|
|
fit: BoxFit.fitWidth,
|
||
|
|
alignment: Alignment.topLeft,
|
||
|
|
child: SizedBox(
|
||
|
|
width: _rectTween.begin!.width,
|
||
|
|
height: _rectTween.begin!.height,
|
||
|
|
child: (hideableKey.currentState?.isInTree ??
|
||
|
|
false)
|
||
|
|
? null
|
||
|
|
: FadeTransition(
|
||
|
|
opacity: closedOpacityTween!
|
||
|
|
.animate(animation),
|
||
|
|
child: Builder(
|
||
|
|
key: closedBuilderKey,
|
||
|
|
builder: (BuildContext context) {
|
||
|
|
// Use dummy "open container" callback
|
||
|
|
// since we are in the process of opening.
|
||
|
|
return closedBuilder(
|
||
|
|
context, () {});
|
||
|
|
},
|
||
|
|
),
|
||
|
|
),
|
||
|
|
),
|
||
|
|
),
|
||
|
|
|
||
|
|
// Open child fading in.
|
||
|
|
FittedBox(
|
||
|
|
fit: BoxFit.fitWidth,
|
||
|
|
alignment: Alignment.topLeft,
|
||
|
|
child: SizedBox(
|
||
|
|
width: _rectTween.end!.width,
|
||
|
|
height: _rectTween.end!.height,
|
||
|
|
child: FadeTransition(
|
||
|
|
opacity:
|
||
|
|
openOpacityTween!.animate(animation),
|
||
|
|
child: Builder(
|
||
|
|
key: _openBuilderKey,
|
||
|
|
builder: (BuildContext context) {
|
||
|
|
return openBuilder(
|
||
|
|
context, closeContainer);
|
||
|
|
},
|
||
|
|
),
|
||
|
|
),
|
||
|
|
),
|
||
|
|
),
|
||
|
|
],
|
||
|
|
),
|
||
|
|
),
|
||
|
|
),
|
||
|
|
),
|
||
|
|
),
|
||
|
|
),
|
||
|
|
);
|
||
|
|
},
|
||
|
|
),
|
||
|
|
);
|
||
|
|
},
|
||
|
|
);
|
||
|
|
}
|
||
|
|
|
||
|
|
@override
|
||
|
|
bool get maintainState => true;
|
||
|
|
|
||
|
|
@override
|
||
|
|
Color? get barrierColor => null;
|
||
|
|
|
||
|
|
@override
|
||
|
|
bool get opaque => true;
|
||
|
|
|
||
|
|
@override
|
||
|
|
bool get barrierDismissible => false;
|
||
|
|
|
||
|
|
@override
|
||
|
|
String? get barrierLabel => null;
|
||
|
|
}
|
||
|
|
|
||
|
|
class _FlippableTweenSequence<T> extends TweenSequence<T> {
|
||
|
|
_FlippableTweenSequence(this._items) : super(_items);
|
||
|
|
|
||
|
|
final List<TweenSequenceItem<T>> _items;
|
||
|
|
_FlippableTweenSequence<T>? _flipped;
|
||
|
|
|
||
|
|
_FlippableTweenSequence<T>? get flipped {
|
||
|
|
if (_flipped == null) {
|
||
|
|
final List<TweenSequenceItem<T>> newItems = <TweenSequenceItem<T>>[];
|
||
|
|
for (int i = 0; i < _items.length; i++) {
|
||
|
|
newItems.add(TweenSequenceItem<T>(
|
||
|
|
tween: _items[i].tween,
|
||
|
|
weight: _items[_items.length - 1 - i].weight,
|
||
|
|
));
|
||
|
|
}
|
||
|
|
_flipped = _FlippableTweenSequence<T>(newItems);
|
||
|
|
}
|
||
|
|
return _flipped;
|
||
|
|
}
|
||
|
|
}
|