54 lines
1.4 KiB
Dart
54 lines
1.4 KiB
Dart
// 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/material.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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});
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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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final FadeTransitionPage<T> _page;
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PageBasedFadeTransitionRoute(this._page) : super(settings: _page);
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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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bool get maintainState => true;
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@override
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Widget buildPage(BuildContext context, Animation<double> animation,
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Animation<double> secondaryAnimation) {
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var curveTween = CurveTween(curve: Curves.easeIn);
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return FadeTransition(
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opacity: animation.drive(curveTween),
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child: (settings as FadeTransitionPage).child,
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);
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}
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@override
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Widget buildTransitions(BuildContext context, Animation<double> animation,
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Animation<double> secondaryAnimation, Widget child) =>
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child;
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}
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