This is an alternative to xinput_calibrator (as seen on github, FreeDesktop, Ubuntu, etc.).
Similarities:
- For Unix-like OS
- Calibrates touchscreens
Differences:
| Thing | xinput_calibrator | xcal |
|---|---|---|
| Language | C++ | Python3 |
| LOC | 2,289 | 284 |
| Interface | Command-line args with some GUI | Walkthrough-based with some GUI |
| GUI toolkit | X | tk |
| Cal points | 4 | Selectable |
| Math | Manual | Numpy least-squares |
| Outputs | Xorg.conf, hal, xinput | xinput |
| Popularity | High | Zero so far |
| Tested | Pretty well | Not very well |
| OS distribution | Available in most major repos | Zero so far |
| Dependencies | libstdc++, libx11, libxi | python3, tkinter, numpy |
xinput_calibrator features precalibration, timeouts, misclick detection, fake driver testing, and a resizable window. xcal features none of those things, but offers some other features not present in xinput_calibrator, including pre-save cal test, cal quality indicator, arbitrary cal point count, and a slightly more informative GUI. Also, the source is quite simpler.
After I couldn't figure out why xinput_calibrator wasn't doing anything on my system (an old CF-29), I read and followed this excellent walkthrough on the Arch wiki. It was too hacky for my comfort, so I wrote this tool inspired by Zootboy's procedure but with some key differences - this is a stand-alone tool that does not require running xinput_calibrator; and it uses Numpy to do some real matrix math instead of hacking around with element-by-element calculations and a fixed calibration dataset size.
./xcal
- ?
