---
name: hidpi-mouse
description: Universal HiDPI mouse click handling for Linux desktop automation. Auto-detects scale factor or allows calibration for any screen resolution/DPI. Converts Claude display coordinates to xdotool screen coordinates.
metadata: {"os": ["linux"], "requires": {"bins": ["xdotool", "scrot", "python3"]}}
user-invocable: false
---

# HiDPI Mouse Skill

Universal mouse coordinate handling for desktop automation across different screen configurations.

## 🚀 Quick Start

```bash
# Click at Claude display coordinates (auto-scales)
./scripts/click.sh 500 300

# First time? Run calibration for best accuracy
./scripts/calibrate.sh
```

## 📐 How It Works

When Claude displays a screenshot, it scales it down. This skill converts coordinates:

```
Claude Display Coords → Scale Factor → xdotool Screen Coords
```

The scale factor depends on:
- Screen resolution (1080p, 1440p, 4K, etc.)
- DPI settings (96, 144, 192, etc.)
- Claude's display viewport

## 🔧 Scripts

### click.sh - Click at coordinates
```bash
./scripts/click.sh <x> <y>           # Auto-scaled click
./scripts/click.sh --raw <x> <y>     # No scaling (screen coords)
./scripts/click.sh --double <x> <y>  # Double click
./scripts/click.sh --right <x> <y>   # Right click
```

### calibrate.sh - Setup & Configuration
```bash
./scripts/calibrate.sh              # Interactive calibration
./scripts/calibrate.sh info         # Show current config
./scripts/calibrate.sh test         # Test current scale
./scripts/calibrate.sh set 2.08     # Manually set scale
./scripts/calibrate.sh reset        # Reset to auto-detect
```

### detect-scale.sh - Get scale factor
```bash
./scripts/detect-scale.sh           # Returns scale (e.g., 2.08)
```

### Other scripts
```bash
./scripts/move.sh <x> <y>           # Move mouse
./scripts/drag.sh <x1> <y1> <x2> <y2>  # Drag
./scripts/reliable_click.sh <x> <y> [--window "Name" --relative]
```

## 🎯 Calibration (Recommended for New Systems)

For best accuracy on your specific system:

```bash
./scripts/calibrate.sh
```

This will:
1. Create a calibration image with markers at known positions
2. Ask you where the markers appear in Claude's display
3. Calculate and save the exact scale factor

## 📊 Common Scale Factors

| Screen | DPI | Typical Scale |
|--------|-----|---------------|
| 1920×1080 | 96 | 1.0 - 1.2 |
| 2560×1440 | 96 | 1.3 - 1.5 |
| 3024×1772 | 192 | 2.08 |
| 3840×2160 | 192 | 2.0 - 2.5 |

## 🔍 Troubleshooting

### Clicks are offset
```bash
# Run calibration
./scripts/calibrate.sh

# Or manually adjust
./scripts/calibrate.sh set 2.1  # Try different values
```

### Check current configuration
```bash
./scripts/calibrate.sh info
```

### Reset everything
```bash
./scripts/calibrate.sh reset
rm -f /tmp/hidpi_scale_cache
```

## 📁 Configuration Files

- `~/.config/hidpi-mouse/scale.conf` - User-set scale (highest priority)
- `/tmp/hidpi_scale_cache` - Auto-detected scale cache (1 hour TTL)

## 🌐 Universal Compatibility

This skill auto-adapts to:
- ✅ Different screen resolutions (1080p to 4K+)
- ✅ Different DPI settings (96, 120, 144, 192, etc.)
- ✅ HiDPI/Retina displays
- ✅ Multi-monitor setups (primary display)

## 💡 Usage Tips

1. **Always calibrate** on a new system for 100% accuracy
2. **Re-calibrate** if you change display settings
3. **Use `--raw`** if you already have screen coordinates
4. **Check `calibrate.sh info`** to see current settings

## 📝 Example Workflow

```bash
# 1. Take screenshot
scrot /tmp/screen.png

# 2. View in Claude, identify button at display coords (500, 300)

# 3. Click it
./scripts/click.sh 500 300

# 4. If off-target, calibrate
./scripts/calibrate.sh
```

---

*Tested on: Ubuntu/Debian with X11, various resolutions and DPI settings*


---
Source attribution: kbarbel640-del
Original project: https://github.com/kbarbel640-del/skills/blob/e7e336ac628c3e3bd771aff1aaa469c93778f94a/skills/zeyuyuyu/hidpi-mouse/SKILL.md
License: MIT
License information: https://opensource.org/license/mit
Original upstream instructions; downloaded from Dave AI.

## Upstream license notice

MIT License

Copyright (c) 2026 clawdbot

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.



# Dave AI resource metadata

Creator / publisher: kbarbel640-del
Original project: https://github.com/kbarbel640-del/skills/blob/e7e336ac628c3e3bd771aff1aaa469c93778f94a/skills/zeyuyuyu/hidpi-mouse/SKILL.md
Attribution basis: Source repository record

Fields of work: Development & Engineering, Customer Support
Roles: Backend Developer, DevOps / SRE, Technical Support
Specialties: Specialty not specified
Tools: Python3, Scrot, Xdotool
Country applicability: Country not specified
Classification basis: Source catalog labels
Instruction SHA-256: c8ab778c8dc9346b8689f12ad4e7bc0f680769508709305525ba2b9502cbfe34