51 lines
1.6 KiB
Dart
51 lines
1.6 KiB
Dart
import 'package:flutter/material.dart';
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import 'package:flutter_hooks/flutter_hooks.dart';
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import 'package:flutter_screenutil/flutter_screenutil.dart';
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class TouchHintWidget extends HookWidget {
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const TouchHintWidget({super.key});
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@override
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Widget build(BuildContext context) {
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final controller = useAnimationController(
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duration: const Duration(milliseconds: 500),
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);
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final colorTween = ColorTween(begin: Colors.white.withOpacity(0.2), end: Colors.white.withOpacity(0.5));
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final scaleTween = Tween(begin: 0.8, end: 1.0);
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useEffect(() {
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controller.forward();
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void onStateChange(AnimationStatus state) {
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if (state == AnimationStatus.completed) {
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controller.reverse();
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} else if (state == AnimationStatus.dismissed){
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controller.forward();
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}
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}
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controller.addStatusListener(onStateChange);
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return () {
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controller.removeStatusListener(onStateChange);
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};
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}, [controller]);
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return AnimatedBuilder(
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animation: controller,
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builder: (context, _) => Transform.scale(
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scale: scaleTween.evaluate(controller),
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child: Container(
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width: 84.h,
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height: 84.h,
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decoration: ShapeDecoration(
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shape: const CircleBorder(),
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gradient: RadialGradient(
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colors: [
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Colors.white.withOpacity(0.5),
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colorTween.evaluate(controller)!,
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Colors.transparent,
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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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}
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