58 lines
1.4 KiB
Dart
58 lines
1.4 KiB
Dart
import 'package:flutter/material.dart';
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/// 按钮按下缩小，离开还原
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class SCScaledButton extends StatefulWidget {
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final Widget child;
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final VoidCallback? onClick;
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const SCScaledButton({Key? key, required this.child, this.onClick}) : super(key: key);
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@override
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_ScaledButtonState createState() => _ScaledButtonState();
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}
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class _ScaledButtonState extends State<SCScaledButton> with TickerProviderStateMixin{
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late AnimationController controller;
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late Animation<double> tween;
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@override
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void initState() {
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super.initState();
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controller = AnimationController(duration: const Duration(milliseconds: 100), vsync: this);
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tween = Tween(begin:1.0, end:1.5).animate(controller);
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}
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@override
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void dispose() {
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super.dispose();
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controller?.dispose();
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}
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@override
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Widget build(BuildContext context) {
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return Material(
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color: Colors.transparent,
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child: ScaleTransition(
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scale: tween,
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alignment: Alignment.center,
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child: GestureDetector(
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behavior: HitTestBehavior.opaque,
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onTap: widget.onClick,
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onTapDown: (details){
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controller.forward();
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},
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onTapUp: (details){
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controller.reset();
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},
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onTapCancel: (){
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controller.reset();
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},
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child: widget.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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