48 lines
1.1 KiB
Dart
48 lines
1.1 KiB
Dart
import 'package:flutter/gestures.dart';
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import 'package:flutter/material.dart';
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/// 自定义实现，替代已停维的 `hovering` 包的 [HoverWidget]。
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///
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/// API 兼容：
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/// ```dart
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/// HoverWidget(
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/// child: ...,
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/// hoverChild: ...,
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/// onHover: (PointerHoverEvent event) { ... },
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/// )
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/// ```
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///
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/// 鼠标悬停时显示 [hoverChild]，否则显示 [child]。
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class HoverWidget extends StatefulWidget {
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final Widget child;
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final Widget? hoverChild;
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final void Function(PointerHoverEvent)? onHover;
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const HoverWidget({
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super.key,
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required this.child,
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this.hoverChild,
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this.onHover,
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});
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@override
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State<HoverWidget> createState() => _HoverWidgetState();
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}
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class _HoverWidgetState extends State<HoverWidget> {
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bool _hovering = false;
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@override
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Widget build(BuildContext context) {
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return MouseRegion(
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cursor: SystemMouseCursors.click,
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onHover: widget.onHover,
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onEnter: (_) => setState(() => _hovering = true),
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onExit: (_) => setState(() => _hovering = false),
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child: (_hovering && widget.hoverChild != null)
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? widget.hoverChild!
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: widget.child,
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);
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}
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}
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