Setting props

[alex-eri]

Setting props like xinput will be great.

For example. Dont know how to set Coordinate Transformation Matrix without xinput and udev.

[whot]

the matrix is implemented by the server and is independent of libinput. the only way to set it is via xinput.

[alex-eri]

the matrix is implemented by the server and is independent of libinput. the only way to set it is via xinput.

There is 2 another matrixes.

	libinput Calibration Matrix (259):	1.000000, 0.000000, 0.000000, 0.000000, 1.000000, 0.000000, 0.000000, 0.000000, 1.000000
	libinput Calibration Matrix Default (260):	1.000000, 0.000000, 0.000000, 0.000000, 1.000000, 0.000000, 0.000000, 0.000000, 1.000000

"libinput Calibration Matrix" set by udev via rule

ENV{ID_VENDOR_ID}=="2149",ENV{ID_MODEL_ID}=="2703",ENV{WL_OUTPUT}="DVI1",ENV{LIBINPUT_CALIBRATION_MATRIX}="1 0 0  0 1 0"

[whot]

that ... Default matrix is just the default value for the other property because that was the only way to do it with device properties, so you can basically ignore that one.

The other one, yes, it exists, and it is available as the calibration property in the DeviceConfig class. note that you'll never get access to the libinput context in the compositor anyway, that's a side-effect of how libinput slots into the stack. so python-libinput can't expose this either, only for the context it creates.

[alex-eri]

I want to run Qt (Pyside2) over EGL without X. Cheap touch screens need calibration and sometimes re-calibration.

One way is to set udev hint, then reset usb port. btw thank you

[whot]

your best approach is a custom-written shell script then that figures out that calibration. this is IMO out of scope for a python library wrapper. You wouldn't directly interact with libinput after all, you'll be writing out a udev property that libinput understands.

[alex-eri]

so only udev.

What about other properties? Mouse acceleration for example

[whot]

see #11 (comment), the DeviceConfig is exposed but you cannot control the libinput context from another process.

[alex-eri]

I dont need to control another process. no X11. only one process running from init =)

[whot]

then tbh I don't quite know what the question is. DeviceConfig.accel for example returns the wrapper for the acceleration config.