Spider Web Control

A customizable spider web control widget for Flutter that detects touch directions with interactive visual effects.

Features

• Customizable appearance: Change colors, size, and web structure
• Direction detection: Get callbacks for 8-directional touch input (R, L, F, B, FR, FL, BR, BL)
• Interactive effects: Web threads warp and bend around touch points
• Flexible integration: Works with any connection type (Bluetooth, HTTP, WebSocket, etc.)
• Theme support: Built-in dark and light theme configurations

Installation

Add this to your package's pubspec.yaml file:

dependencies:
  spider_web_control: ^0.0.2

Usage

Basic Usage

import 'package:spider_web_control/spider_web_control.dart';

SpiderWebControl(
  onDirectionChanged: (direction) {
    print('Direction: $direction');
    // Handle direction change (e.g., send to device)
  },
)

Custom Configuration

SpiderWebControl(
  config: SpiderWebConfig(
    size: 400.0,
    threadColor: Colors.cyan,
    dewDropColor: Colors.lightBlue,
    centerThreshold: 100.0,
    sendInterval: Duration(milliseconds: 500),
  ),
  onDirectionChanged: (direction) {
    // Your custom logic here
  },
  onTouchStart: () => print('Touch started'),
  onTouchEnd: () => print('Touch ended'),
)

Using with Bluetooth

class MyBluetoothController extends StatelessWidget {
  final BluetoothConnection connection;

  MyBluetoothController({required this.connection});

  @override
  Widget build(BuildContext context) {
    return SpiderWebControl(
      config: SpiderWebConfig.darkTheme(size: 350.0),
      onDirectionChanged: (direction) {
        // Send direction to Bluetooth device
        connection.output.add(Uint8List.fromList(direction.codeUnits));
      },
    );
  }
}

Theme Examples

// Dark theme
SpiderWebControl(
  config: SpiderWebConfig.darkTheme(size: 300.0),
  onDirectionChanged: (direction) => handleDirection(direction),
)

// Light theme
SpiderWebControl(
  config: SpiderWebConfig.lightTheme(size: 300.0),
  onDirectionChanged: (direction) => handleDirection(direction),
)

// Custom theme
SpiderWebControl(
  config: SpiderWebConfig(
    size: 320.0,
    threadColor: Colors.purple,
    minorThreadColor: Colors.purpleAccent,
    dewDropColor: Colors.pink,
    radialDivisions: 48,
    circleDivisions: 30,
  ),
  onDirectionChanged: (direction) => handleDirection(direction),
)

Configuration Options

Property	Type	Default	Description
size	double	300.0	Size of the spider web widget
threadColor	Color	Colors.blue	Main thread color
minorThreadColor	Color	Colors.blueGrey	Minor thread color
dewDropColor	Color	Colors.lightBlue	Dew drop accent color
centerThreshold	double	80.0	Dead zone radius in center
sendInterval	Duration	Duration(seconds: 1)	Minimum time between direction callbacks
radialDivisions	int	36	Number of radial web divisions
circleDivisions	int	25	Number of circular web divisions

Direction Values

The widget returns these direction strings:

• 'R' - Right
• 'L' - Left
• 'F' - Forward/Up
• 'B' - Back/Down
• 'FR' - Forward-Right
• 'FL' - Forward-Left
• 'BR' - Back-Right
• 'BL' - Back-Left
• 'Disabled Zone' - Center area (not sent to callback)

License

MIT License - see LICENSE file for details.