waveform_visualizer 1.0.0 
waveform_visualizer: ^1.0.0 copied to clipboard
A beautiful animated waveform widget for Flutter with real-time visualization capabilities.
import 'package:flutter/material.dart';
import 'package:waveform_visualizer/waveform_visualizer.dart';
void main() {
// Initialize the package
WaveformVisualizer.initialize();
runApp(const MyApp());
}
class MyApp extends StatelessWidget {
const MyApp({Key? key}) : super(key: key);
@override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Waveform Visualizer Demo',
theme: ThemeData.dark().copyWith(
// primarySwatch: Colors.blue,
scaffoldBackgroundColor: const Color(0xFF0D1117),
appBarTheme: const AppBarTheme(
backgroundColor: Color(0xFF161B22),
elevation: 0,
),
cardColor: const Color(0xFF161B22),
useMaterial3: true,
),
home: const WaveformDemoPage(),
);
}
}
class WaveformDemoPage extends StatefulWidget {
const WaveformDemoPage({Key? key}) : super(key: key);
@override
State<WaveformDemoPage> createState() => _WaveformDemoPageState();
}
class _WaveformDemoPageState extends State<WaveformDemoPage> {
late WaveformController _waveformController;
WaveformDrawStyle _selectedStyle = WaveformDrawStyle.bars;
Color _selectedColor = Colors.cyan;
bool _showGradient = true;
double _strokeWidth = 2.0;
int _barCount = 40;
final List<Color> _colorOptions = [
Colors.cyan,
Colors.purple,
Colors.orange,
Colors.green,
Colors.pink,
Colors.blue,
Colors.red,
Colors.yellow,
];
@override
void initState() {
super.initState();
_waveformController = WaveformController(
maxDataPoints: 80,
updateInterval: const Duration(milliseconds: 33),
smoothingFactor: 0.85,
);
}
@override
void dispose() {
_waveformController.dispose();
super.dispose();
}
void _showPackageInfo() {
final info = WaveformVisualizer.getPackageInfo();
showDialog(
context: context,
builder: (context) => AlertDialog(
backgroundColor: const Color(0xFF161B22),
title: const Text('Package Information'),
content: Column(
mainAxisSize: MainAxisSize.min,
crossAxisAlignment: CrossAxisAlignment.start,
children: info.entries
.map((entry) => Padding(
padding: const EdgeInsets.symmetric(vertical: 4.0),
child: Row(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
Text(
'${entry.key}: ',
style: const TextStyle(fontWeight: FontWeight.bold),
),
Expanded(child: Text(entry.value)),
],
),
))
.toList(),
),
actions: [
TextButton(
onPressed: () => Navigator.of(context).pop(),
child: const Text('OK'),
),
],
),
);
}
Widget _buildControlCard({
required String title,
required Widget child,
}) {
return Card(
elevation: 4,
margin: const EdgeInsets.symmetric(vertical: 8.0),
child: Padding(
padding: const EdgeInsets.all(16.0),
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
Text(
title,
style: const TextStyle(
fontSize: 16,
fontWeight: FontWeight.bold,
color: Colors.cyan,
),
),
const SizedBox(height: 12),
child,
],
),
),
);
}
@override
Widget build(BuildContext context) {
final waveformStyle = WaveformStyle(
waveColor: _selectedColor,
backgroundColor: const Color(0xFF0D1117),
strokeWidth: _strokeWidth,
showGradient: _showGradient,
gradientBegin: Alignment.topCenter,
gradientEnd: Alignment.bottomCenter,
waveformStyle: _selectedStyle,
barCount: _barCount,
barSpacing: 2.0,
animationDuration: const Duration(milliseconds: 100),
);
return Scaffold(
appBar: AppBar(
title: const Text('🎵 Waveform Visualizer Demo'),
actions: [
IconButton(
icon: const Icon(Icons.info_outline),
onPressed: _showPackageInfo,
),
],
),
body: SingleChildScrollView(
padding: const EdgeInsets.all(16.0),
child: Column(
crossAxisAlignment: CrossAxisAlignment.stretch,
children: [
// Main Waveform Display
Card(
elevation: 8,
child: Padding(
padding: const EdgeInsets.all(16.0),
child: Column(
children: [
const Text(
'🎤 Live Waveform Visualization',
style: TextStyle(
fontSize: 20,
fontWeight: FontWeight.bold,
color: Colors.cyan,
),
),
const SizedBox(height: 16),
WaveformWidget(
controller: _waveformController,
style: waveformStyle,
height: 200,
onTap: () {
if (_waveformController.isActive) {
_waveformController.stop();
} else {
_waveformController.start();
}
},
),
const SizedBox(height: 16),
Row(
mainAxisAlignment: MainAxisAlignment.spaceEvenly,
children: [
ElevatedButton.icon(
onPressed: () {
if (_waveformController.isActive) {
_waveformController.stop();
} else {
_waveformController.start();
}
},
icon: Icon(_waveformController.isActive
? Icons.stop
: Icons.play_arrow),
label: Text(_waveformController.isActive
? 'Stop'
: 'Start'),
style: ElevatedButton.styleFrom(
backgroundColor: _waveformController.isActive
? Colors.red
: Colors.green,
),
),
ElevatedButton.icon(
onPressed: _waveformController.generateTestPattern,
icon: const Icon(Icons.graphic_eq),
label: const Text('Test Pattern'),
),
ElevatedButton.icon(
onPressed: _waveformController.reset,
icon: const Icon(Icons.refresh),
label: const Text('Reset'),
),
],
),
],
),
),
),
// Style Controls
_buildControlCard(
title: '🎨 Waveform Style',
child: Wrap(
spacing: 8.0,
children: WaveformDrawStyle.values.map((style) {
final isSelected = _selectedStyle == style;
return FilterChip(
label: Text(_getStyleName(style)),
selected: isSelected,
onSelected: (selected) {
setState(() {
_selectedStyle = style;
});
},
selectedColor: Colors.cyan.withValues(alpha: 0.3),
);
}).toList(),
),
),
// Color Controls
_buildControlCard(
title: '🌈 Colors',
child: Column(
children: [
Wrap(
spacing: 8.0,
children: _colorOptions.map((color) {
final isSelected = _selectedColor == color;
return GestureDetector(
onTap: () {
setState(() {
_selectedColor = color;
});
},
child: Container(
width: 40,
height: 40,
decoration: BoxDecoration(
color: color,
border: isSelected
? Border.all(color: Colors.white, width: 3)
: null,
borderRadius: BorderRadius.circular(8),
),
),
);
}).toList(),
),
const SizedBox(height: 16),
SwitchListTile(
title: const Text('Gradient Effect'),
value: _showGradient,
onChanged: (value) {
setState(() {
_showGradient = value;
});
},
activeColor: Colors.cyan,
),
],
),
),
// Advanced Controls
_buildControlCard(
title: '⚙️ Advanced Settings',
child: Column(
children: [
ListTile(
title: const Text('Stroke Width'),
subtitle: Slider(
value: _strokeWidth,
min: 1.0,
max: 10.0,
divisions: 9,
label: _strokeWidth.toStringAsFixed(1),
onChanged: (value) {
setState(() {
_strokeWidth = value;
});
},
activeColor: Colors.cyan,
),
),
if (_selectedStyle == WaveformDrawStyle.bars)
ListTile(
title: const Text('Bar Count'),
subtitle: Slider(
value: _barCount.toDouble(),
min: 20,
max: 60,
divisions: 8,
label: _barCount.toString(),
onChanged: (value) {
setState(() {
_barCount = value.round();
});
},
activeColor: Colors.cyan,
),
),
],
),
),
// Information Card
_buildControlCard(
title: '📱 Usage Instructions',
child: const Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
Text('• Tap the waveform to start/stop visualization'),
SizedBox(height: 4),
Text('• Use "Test Pattern" to see a demo animation'),
SizedBox(height: 4),
Text('• Try different styles and colors'),
SizedBox(height: 4),
Text('• Bars use interpolation for smooth animation'),
SizedBox(height: 4),
Text('• Lower bar count = smoother performance'),
SizedBox(height: 4),
Text('• In real apps, connect to microphone amplitude'),
SizedBox(height: 8),
Text(
'Current: Smoothed real-time simulated data',
style: TextStyle(
fontStyle: FontStyle.italic,
color: Colors.cyan,
),
),
],
),
),
],
),
),
);
}
String _getStyleName(WaveformDrawStyle style) {
switch (style) {
case WaveformDrawStyle.bars:
return 'Bars';
case WaveformDrawStyle.line:
return 'Line';
case WaveformDrawStyle.filled:
return 'Filled';
case WaveformDrawStyle.circular:
return 'Circular';
}
}
}Metadata
1
likes
150
points
133
downloads
Publisher
Weekly Downloads
Metadata
A beautiful animated waveform widget for Flutter with real-time visualization capabilities.
Repository (GitHub)
View/report issues
Topics
#flutter #waveform #animation #audio-visualization
Documentation
License
MIT (license)