79 lines
1.8 KiB
Dart
79 lines
1.8 KiB
Dart
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import 'dart:async';
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import 'package:flutter/material.dart';
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import '../../../core/infra/player_engine/player_engine.dart';
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class PlayerPlayPauseButton extends StatefulWidget {
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final PlayerEngine player;
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final double? iconSize;
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final BoxConstraints? constraints;
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const PlayerPlayPauseButton({
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super.key,
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required this.player,
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this.iconSize,
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this.constraints,
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});
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@override
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State<PlayerPlayPauseButton> createState() => _PlayerPlayPauseButtonState();
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}
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class _PlayerPlayPauseButtonState extends State<PlayerPlayPauseButton> {
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late bool _playing;
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StreamSubscription<bool>? _sub;
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@override
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void initState() {
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super.initState();
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_playing = widget.player.state.playing;
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_sub = widget.player.stream.playing.listen((playing) {
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if (mounted) setState(() => _playing = playing);
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});
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}
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@override
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void didUpdateWidget(covariant PlayerPlayPauseButton oldWidget) {
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super.didUpdateWidget(oldWidget);
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if (oldWidget.player != widget.player) {
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unawaited(_sub?.cancel());
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_playing = widget.player.state.playing;
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_sub = widget.player.stream.playing.listen((playing) {
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if (mounted) setState(() => _playing = playing);
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});
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}
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}
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@override
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void dispose() {
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unawaited(_sub?.cancel());
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super.dispose();
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}
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@override
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Widget build(BuildContext context) {
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return IconButton(
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tooltip: _playing ? '暂停' : '播放',
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constraints: widget.constraints,
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padding: widget.constraints != null ? EdgeInsets.zero : null,
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onPressed: () {
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if (_playing) {
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unawaited(widget.player.pause());
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} else {
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unawaited(widget.player.play());
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}
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},
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icon: Icon(
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_playing ? Icons.pause : Icons.play_arrow,
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color: Colors.white,
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size: widget.iconSize ?? 30,
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),
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);
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}
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}
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