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How to continue showing value indicator in slider in flutter

mathiasgodwin answered on September 25, 2024 Popularity 1/10 Helpfulness 1/10

answer How to continue showing value indicator in slider in flutter

related ubuntu for headsets for better audio quality pluseeffects

How to continue showing value indicator in slider in flutter

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import 'package:flutter/material.dart';

void main() {
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: SliderCustomThumb(),
    );
  }
}

class SliderCustomThumb extends StatefulWidget {
  @override
  _SliderCustomThumbState createState() => _SliderCustomThumbState();
}

class _SliderCustomThumbState extends State<SliderCustomThumb> {
  double _sliderValue = 50;

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('Custom Slider Thumb with Label'),
      ),
      body: Padding(
        padding: const EdgeInsets.all(16.0),
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: [
            SliderTheme(
              data: SliderTheme.of(context).copyWith(
                thumbShape: CustomSliderThumbWithLabel(
                  thumbRadius: 20,
                  sliderValue: _sliderValue,
                ),
                overlayShape: RoundSliderOverlayShape(overlayRadius: 30),
              ),
              child: Slider(
                value: _sliderValue,
                min: 0,
                max: 100,
                divisions: 100,
                onChanged: (value) {
                  setState(() {
                    _sliderValue = value;
                  });
                },
              ),
            ),
          ],
        ),
      ),
    );
  }
}

class CustomSliderThumbWithLabel extends RoundSliderThumbShape {
  final double thumbRadius;
  final double sliderValue;

  CustomSliderThumbWithLabel({
    required this.thumbRadius,
    required this.sliderValue,
  });

  @override
  void paint(
      PaintingContext context,
      Offset center, {
        required Animation<double> activationAnimation,
        required Animation<double> enableAnimation,
        required bool isDiscrete,
        required TextPainter labelPainter,
        required RenderBox parentBox,
        required SliderThemeData sliderTheme,
        required TextDirection textDirection,
        required double value,
        required double textScaleFactor,
        required Size sizeWithOverflow,
      }) {
    final Canvas canvas = context.canvas;

    // Draw thumb circle
    final Paint thumbPaint = Paint()
      ..color = sliderTheme.thumbColor ?? Colors.blue;
    canvas.drawCircle(center, thumbRadius, thumbPaint);

    // Draw label inside thumb
    TextSpan span = TextSpan(
      style: TextStyle(
        fontSize: thumbRadius * 0.6,
        fontWeight: FontWeight.bold,
        color: Colors.white,
      ),
      text: '${sliderValue.toStringAsFixed(0)}%',
    );
    TextPainter tp = TextPainter(
      text: span,
      textAlign: TextAlign.center,
      textDirection: textDirection,
    );
    tp.layout();
    Offset textCenter =
        Offset(center.dx - (tp.width / 2), center.dy - (tp.height / 2));
    tp.paint(canvas, textCenter);
  }
}

Popularity 1/10 Helpfulness 1/10 Language dart

Source: github.com

Tags: continue dart flutter indicator slider

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Contributed on Sep 25 2024

mathiasgodwin

0 Answers Avg Quality 2/10

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ubuntu for headsets for better audio quality pluseeffects

Comment

sudo add-apt-repository ppa:mikhailnov/pulseeffects -y
sudo apt update
sudo apt install pulseeffects

Popularity 1/10 Helpfulness 1/10 Language shell

Source: askubuntu.com

Tags: audio shell ubuntu

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Contributed on Sep 25 2024

Dead Dolphin

0 Answers Avg Quality 2/10

How to continue showing value indicator in slider in flutter

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How to continue showing value indicator in slider in flutter

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ubuntu for headsets for better audio quality pluseeffects

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