Touchscreen Remapper

A Rust application using Iced GUI framework to map touch devices to monitors in a multi-monitor setup.

Features

• Detects all connected screens using xrandr
• Lists touch input devices using xinput
• Allows mapping touch devices to specific screens
• Simple GUI interface with Iced

Requirements

• Rust (latest stable version)
• X11 environment with xrandr and xinput
• Touchscreen devices connected

Installation

1. Clone this repository
2. Install dependencies:

   cargo build --release
   

Usage

1. Run the application:

   ./target/release/touchscreen-remapper
   

2. The application will show a list of connected screens

3. Click on the screen you want to map a touch device to

4. Touch the screen when prompted

5. The application will detect the touch device and map it to the selected screen

How It Works

1. Screen Detection: Uses xrandr to list all connected monitors
2. Touch Detection: Uses xinput test-xi2 --root to capture RawTouch events and parse device IDs
3. Mapping: Uses xinput map-to-output to directly map the touch device to the selected screen output

Implementation Notes

• The application uses shell commands (xrandr, xinput) instead of direct X11 library calls
• Uses the simple xinput map-to-output approach for reliable device-to-screen mapping
• Touch event listening is simulated in this basic implementation
• For a production version, you would need to implement proper touch event listening using libinput or evdev

Limitations

• This is a basic implementation that demonstrates the concept
• Real touch event detection would require additional implementation
• Currently uses simulated touch devices when xinput is not available

Future Improvements

• Implement proper touch event listening with libinput/evdev
• Add proper screen dimension parsing
• Implement accurate coordinate transformation calculations
• Add error handling and user feedback
• Support for multiple touch devices
• Configuration persistence