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67 lines
1.6 KiB
67 lines
1.6 KiB
// Copyright 2021, the Flutter project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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import 'package:flutter/cupertino.dart';
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class FadeTransitionPage<T> extends Page<T> {
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final Widget child;
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final Duration duration;
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const FadeTransitionPage({
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super.key,
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required this.child,
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this.duration = const Duration(milliseconds: 300),
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super.restorationId,
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});
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@override
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Route<T> createRoute(BuildContext context) =>
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PageBasedFadeTransitionRoute<T>(this);
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}
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class PageBasedFadeTransitionRoute<T> extends PageRoute<T> {
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PageBasedFadeTransitionRoute(FadeTransitionPage<T> page)
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: super(settings: page);
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FadeTransitionPage<T> get _page => settings as FadeTransitionPage<T>;
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@override
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Color? get barrierColor => null;
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@override
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String? get barrierLabel => null;
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@override
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Duration get transitionDuration => _page.duration;
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@override
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Duration get reverseTransitionDuration => _page.duration;
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@override
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bool get maintainState => true;
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@override
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Widget buildPage(
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BuildContext context,
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Animation<double> animation,
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Animation<double> secondaryAnimation,
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) {
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return _page.child;
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}
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@override
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Widget buildTransitions(
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BuildContext context,
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Animation<double> animation,
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Animation<double> secondaryAnimation,
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Widget child,
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) {
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final tween = CurveTween(curve: Curves.easeInOut);
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return FadeTransition(
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opacity: animation.drive(tween),
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child: _page.child,
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);
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}
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}
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