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chore: refactor to MainPageIsPlayingIcon (#984)
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,221 @@ | ||
| import 'dart:math' as math; | ||
|
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| import 'package:flutter/foundation.dart'; | ||
| import 'package:flutter/material.dart'; | ||
|
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| import 'theme.dart'; | ||
|
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| class ActiveAudioSignalIndicator extends StatefulWidget { | ||
| final Color? color; | ||
| final double thickness; | ||
|
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| const ActiveAudioSignalIndicator({ | ||
| this.color, | ||
| this.thickness = 2.0, | ||
| super.key, | ||
| }); | ||
|
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| @override | ||
| State<ActiveAudioSignalIndicator> createState() => | ||
| _ActiveAudioSignalIndicatorState(); | ||
| } | ||
|
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| class _ActiveAudioSignalIndicatorState extends State<ActiveAudioSignalIndicator> | ||
| with TickerProviderStateMixin { | ||
| static const _delayInMills = [770, 290, 280, 740]; | ||
| static const _durationInMills = [1260, 430, 1010, 730]; | ||
| static final TweenSequence<double> _seq = TweenSequence([ | ||
| TweenSequenceItem(tween: Tween(begin: 1.0, end: 0.5), weight: 1), | ||
| TweenSequenceItem(tween: Tween(begin: 0.5, end: 1.0), weight: 1), | ||
| ]); | ||
|
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| final List<AnimationController> _controllers = []; | ||
|
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| @override | ||
| void initState() { | ||
| super.initState(); | ||
| for (int i = 0; i < 4; i++) { | ||
| _controllers.add( | ||
| AnimationController( | ||
| value: _delayInMills[i] / _durationInMills[i], | ||
| vsync: this, | ||
| duration: Duration(milliseconds: _durationInMills[i]), | ||
| ), | ||
| ); | ||
| _controllers[i].repeat(); | ||
| } | ||
| } | ||
|
|
||
| @override | ||
| void dispose() { | ||
| for (final AnimationController e in _controllers) { | ||
| e.dispose(); | ||
| } | ||
|
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| super.dispose(); | ||
| } | ||
|
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| @override | ||
| Widget build(BuildContext context) { | ||
| return RepaintBoundary( | ||
| child: Padding( | ||
| padding: const EdgeInsets.only(left: 3, right: 1), | ||
| child: SizedBox( | ||
| width: iconSize - 2, | ||
| height: iconSize, | ||
| child: AnimatedBuilder( | ||
| animation: Listenable.merge(_controllers), | ||
| builder: (context, _) { | ||
| return CustomPaint( | ||
| painter: _ActiveAudioSignalPainter( | ||
| animations: _controllers | ||
| .map(_seq.animate) | ||
| .map((e) => e.value) | ||
| .toList(), | ||
| color: widget.color ?? Theme.of(context).colorScheme.primary, | ||
| thickness: widget.thickness, | ||
| ), | ||
| ); | ||
| }, | ||
| ), | ||
| ), | ||
| ), | ||
| ); | ||
| } | ||
| } | ||
|
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| class _ActiveAudioSignalPainter extends CustomPainter { | ||
| final List<double> animations; | ||
| final Color? color; | ||
| final double thickness; | ||
|
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| const _ActiveAudioSignalPainter({ | ||
| required this.animations, | ||
| this.color, | ||
| this.thickness = 2.0, | ||
| }); | ||
|
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||
| @override | ||
| void paint(Canvas canvas, Size size) { | ||
| for (int i = 0; i < animations.length; i++) { | ||
| final double dx = (size.width - thickness * animations.length) / | ||
| (animations.length - 1) * | ||
| i + | ||
| thickness / 2; | ||
|
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| canvas.drawLine( | ||
| Offset(dx, 0.5 * animations[i] * size.height), | ||
| Offset(dx, size.height - 0.5 * animations[i] * size.height), | ||
| Paint() | ||
| ..color = color ?? Colors.black | ||
| ..style = PaintingStyle.stroke | ||
| ..strokeWidth = thickness | ||
| ..strokeCap = StrokeCap.round, | ||
| ); | ||
| } | ||
| } | ||
|
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| @override | ||
| bool shouldRepaint(covariant _ActiveAudioSignalPainter old) { | ||
| return !listEquals(animations, old.animations) || | ||
| color != old.color || | ||
| thickness != old.thickness; | ||
| } | ||
| } | ||
|
|
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| // Code by @HrX03 | ||
| const _kTargetCanvasSize = 24.0; | ||
| const _kBarsStartOffsets = [0.2, 0.8, 0.4, 0.6]; | ||
| const _kDefaultIndicatorThickness = 2.0; | ||
|
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| class AudioSignalIndicator extends StatelessWidget { | ||
| const AudioSignalIndicator({ | ||
| required this.progress, | ||
| this.color, | ||
| this.size = _kTargetCanvasSize, | ||
| super.key, | ||
| }); | ||
|
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| final Animation<double> progress; | ||
| final double size; | ||
| final Color? color; | ||
|
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| @override | ||
| Widget build(BuildContext context) { | ||
| final values = | ||
| _kBarsStartOffsets.map((e) => _transform(progress.value, e)).toList(); | ||
|
|
||
| return RepaintBoundary( | ||
| child: SizedBox.square( | ||
| dimension: size, | ||
| child: AnimatedBuilder( | ||
| animation: progress, | ||
| builder: (context, _) { | ||
| return CustomPaint( | ||
| painter: _AudioSignalPainter( | ||
| values: values, | ||
| size: size, | ||
| color: color ?? Theme.of(context).colorScheme.onSurface, | ||
| thickness: _kDefaultIndicatorThickness, | ||
| ), | ||
| size: Size.square(size), | ||
| ); | ||
| }, | ||
| ), | ||
| ), | ||
| ); | ||
| } | ||
| } | ||
|
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| double _transform(double v, [double offset = 0]) { | ||
| return math.acos(math.cos((v + offset / 2) * 2 * math.pi)) / math.pi; | ||
| } | ||
|
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| class _AudioSignalPainter extends CustomPainter { | ||
| const _AudioSignalPainter({ | ||
| required this.values, | ||
| this.size = 24.0, | ||
| this.color, | ||
| this.thickness = 2.0, | ||
| }); | ||
|
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| final List<double> values; | ||
| final double size; | ||
| final Color? color; | ||
| final double thickness; | ||
|
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| @override | ||
| void paint(Canvas canvas, Size size) { | ||
| canvas.scale(this.size / _kTargetCanvasSize); | ||
|
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| final inbetweenSpace = | ||
| (_kTargetCanvasSize - thickness) / (values.length - 1); | ||
|
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| for (var i = 0; i < values.length; i++) { | ||
| final dx = (inbetweenSpace * i) + thickness / 2; | ||
| const hh = _kTargetCanvasSize / 2; | ||
| final fraction = values[i]; | ||
|
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| canvas.drawLine( | ||
| Offset(dx, hh - (fraction * hh)), | ||
| Offset(dx, hh + (fraction * hh)), | ||
| getBarPaint(), | ||
| ); | ||
| } | ||
| } | ||
|
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| Paint getBarPaint() { | ||
| return Paint() | ||
| ..color = color ?? Colors.black | ||
| ..style = PaintingStyle.stroke | ||
| ..strokeWidth = thickness | ||
| ..strokeCap = StrokeCap.round; | ||
| } | ||
|
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| @override | ||
| bool shouldRepaint(covariant _AudioSignalPainter old) { | ||
| return !listEquals(values, old.values) || | ||
| color != old.color || | ||
| thickness != old.thickness; | ||
| } | ||
| } |
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