fix(player): 恢复develop飘心实现

lib/pages/player/widgets/player_double_tap_hearts.dart

@@ -1,37 +1,43 @@
 // Author: fruit.com.cn
 
-import 'dart:math';
-
-import 'package:flutter/foundation.dart';
 import 'package:flutter/material.dart';
 
 import '../../../core/theme/app_colors.dart';
 
+const int _heartDurationMs = 680;
+const double _heartPopPortion = 0.18;
+const double _heartStartScale = 0.7;
+const double _heartHoldPortion = 0.45;
+
+const List<_HeartParticle> _hearts = [
+  _HeartParticle(
+    delay: 0,
+    travel: 108,
+    drift: 0,
+    size: 48,
+    color: AppColors.doubleTapHeartRed,
+  ),
+  _HeartParticle(
+    delay: 50,
+    travel: 96,
+    drift: -28,
+    size: 36,
+    color: AppColors.doubleTapHeartPink,
+  ),
+  _HeartParticle(
+    delay: 90,
+    travel: 118,
+    drift: 26,
+    size: 40,
+    color: AppColors.doubleTapHeartRed,
+  ),
+];
+
 /// 双击点赞时，在点击位置飘出一小簇心。
 class PlayerDoubleTapHeartBurst extends StatefulWidget {
-  const PlayerDoubleTapHeartBurst({
-    super.key,
-    required this.burstId,
-    required this.onCompleted,
-    this.random,
-    this.origin = Offset.zero,
-  });
+  const PlayerDoubleTapHeartBurst({super.key, required this.onCompleted});
 
-  final int burstId;
   final VoidCallback onCompleted;
-  final Random? random;
-  final Offset origin;
-
-  @visibleForTesting
-  static double opacityForProgress(double progress) =>
-      1 - Curves.easeIn.transform(progress);
-
-  @visibleForTesting
-  static double scaleForProgress(double progress) {
-    return progress < 0.3
-        ? 0.55 + (1.15 - 0.55) * (progress / 0.3)
-        : 1.15 - (1.15 - 0.2) * ((progress - 0.3) / 0.7);
-  }
 
   @override
   State<PlayerDoubleTapHeartBurst> createState() =>
@@ -41,41 +47,14 @@ class PlayerDoubleTapHeartBurst extends StatefulWidget {
 class _PlayerDoubleTapHeartBurstState extends State<PlayerDoubleTapHeartBurst>
     with SingleTickerProviderStateMixin {
   late final AnimationController _controller;
-  late final List<_HeartParticle> _particles;
-  final Stopwatch _lifetime = Stopwatch();
   bool _completed = false;
 
   @override
   void initState() {
     super.initState();
-    _lifetime.start();
-    final random = widget.random ?? Random();
-    var delay = 0;
-    _particles = List.generate(6 + random.nextInt(3), (index) {
-      if (index > 0) delay += 40 + random.nextInt(21);
-      return _HeartParticle(
-        delay: delay,
-        duration: 700 + random.nextInt(201),
-        travel: 120 + random.nextInt(41),
-        drift: -30 + random.nextInt(61),
-        size: (22 + random.nextInt(13)).toDouble(),
-        color: random.nextBool()
-            ? AppColors.doubleTapHeartRed
-            : AppColors.doubleTapHeartPink,
-      );
-    });
-    final total = _particles
-        .map((particle) => particle.delay + particle.duration)
-        .reduce(max);
-    if (kDebugMode) {
-      debugPrint('[player] phase=heart-burst-init id=${widget.burstId}');
-      debugPrint(
-        '[player] phase=heart-burst-start '
-        'id=${widget.burstId} count=${_particles.length} '
-        'at=${widget.origin.dx.toStringAsFixed(1)},'
-        '${widget.origin.dy.toStringAsFixed(1)}',
-      );
-    }
+    final total = _hearts
+        .map((heart) => heart.delay + _heartDurationMs)
+        .reduce((left, right) => left > right ? left : right);
     _controller = AnimationController(
       vsync: this,
       duration: Duration(milliseconds: total),
@@ -86,29 +65,11 @@ class _PlayerDoubleTapHeartBurstState extends State<PlayerDoubleTapHeartBurst>
   void _onStatus(AnimationStatus status) {
     if (status != AnimationStatus.completed || _completed) return;
     _completed = true;
-    if (kDebugMode) {
-      final elapsedMs = _controller.duration?.inMilliseconds ?? 0;
-      debugPrint(
-        '[player] phase=heart-burst-complete '
-        'id=${widget.burstId} configuredMs=$elapsedMs',
-      );
-    }
     widget.onCompleted();
   }
 
   @override
   void dispose() {
-    if (kDebugMode) {
-      final elapsedMs = _completed
-          ? _controller.duration?.inMilliseconds ?? 0
-          : _lifetime.elapsedMilliseconds;
-      debugPrint(
-        '[player] phase=heart-burst-dispose '
-        'id=${widget.burstId} elapsedMs=$elapsedMs '
-        'completed=${_completed ? 1 : 0}',
-      );
-    }
-    _lifetime.stop();
     _controller
       ..removeStatusListener(_onStatus)
       ..dispose();
@@ -118,44 +79,51 @@ class _PlayerDoubleTapHeartBurstState extends State<PlayerDoubleTapHeartBurst>
   @override
   Widget build(BuildContext context) {
     return IgnorePointer(
-      child: AnimatedBuilder(
-        animation: _controller,
-        builder: (context, _) {
-          final elapsed =
-              _controller.value * _controller.duration!.inMilliseconds;
-          return Stack(
-            fit: StackFit.expand,
-            clipBehavior: Clip.none,
-            children: [
-              for (var index = 0; index < _particles.length; index++)
-                _particle(_particles[index], elapsed, index),
-            ],
-          );
-        },
+      child: SizedBox.shrink(
+        child: AnimatedBuilder(
+          animation: _controller,
+          builder: (context, _) {
+            final elapsed =
+                _controller.value * _controller.duration!.inMilliseconds;
+            return Stack(
+              clipBehavior: Clip.none,
+              children: [
+                for (var index = 0; index < _hearts.length; index++)
+                  _heart(_hearts[index], elapsed, index),
+              ],
+            );
+          },
+        ),
       ),
     );
   }
 
-  Widget _particle(_HeartParticle particle, double elapsed, int index) {
-    final progress = ((elapsed - particle.delay) / particle.duration).clamp(
+  Widget _heart(_HeartParticle heart, double elapsed, int index) {
+    final progress = ((elapsed - heart.delay) / _heartDurationMs).clamp(
       0.0,
       1.0,
     );
     if (progress <= 0) return const SizedBox.shrink();
     final move = Curves.easeOutCubic.transform(progress);
-    final scale = PlayerDoubleTapHeartBurst.scaleForProgress(progress);
+    final scale = progress < _heartPopPortion
+        ? _heartStartScale +
+              (1 - _heartStartScale) * (progress / _heartPopPortion)
+        : 1.0;
+    final opacity = progress < _heartHoldPortion
+        ? 1.0
+        : 1 - ((progress - _heartHoldPortion) / (1 - _heartHoldPortion));
     return Positioned(
-      left: widget.origin.dx + particle.drift * move - particle.size / 2,
-      top: widget.origin.dy - particle.size / 2 - particle.travel * move,
+      left: heart.drift * move - heart.size / 2,
+      top: -heart.size / 2 - heart.travel * move,
       child: Opacity(
-        opacity: PlayerDoubleTapHeartBurst.opacityForProgress(progress),
+        opacity: opacity.clamp(0.0, 1.0),
         child: Transform.scale(
           scale: scale,
           child: Icon(
             key: Key('double-tap-heart-$index'),
             Icons.favorite_rounded,
-            color: particle.color,
-            size: particle.size,
+            color: heart.color,
+            size: heart.size,
           ),
         ),
       ),
@@ -166,7 +134,6 @@ class _PlayerDoubleTapHeartBurstState extends State<PlayerDoubleTapHeartBurst>
 class _HeartParticle {
   const _HeartParticle({
     required this.delay,
-    required this.duration,
     required this.travel,
     required this.drift,
     required this.size,
@@ -174,9 +141,8 @@ class _HeartParticle {
   });
 
   final int delay;
-  final int duration;
-  final int travel;
-  final int drift;
+  final double travel;
+  final double drift;
   final double size;
   final Color color;
 }