eGalax touchscreen calibration

[bboyandru]

(8th Jul, 2013 06:56 PM)Markamc Wrote:  This is good news, although hard-coding a solutions can have side-effects on other device functionality, please correct me if I'm wrong?

I understand it applies the calibrations to the pointer position (if egalax or calib file exists), but will the 'patch' change the click and drag functionality? even when using mouse, or my alternative method? not sure it will suit all, unless you have the option to enable/disable

cheers

mark

The fix applies calibration whether the file exists or not.
calibration:
It affects just absolute touches(ABS_X and ABS_Y), which are generated by a touchscreen device. Mouse generates relative events (REL_X, REL_Y) which are not affected.
click vs drag:
I don't think this will be affected, because what this patch does is when user issues a press event(and XBMC will get alot of events for a single tap/click) the first touch is being ignored and when the second touch comes this is not ignored any more and distance from the previous touch is calculated and XBMC decides if it is a click or a drag action.
So I don't think this will affect mouse more than loosing the first press event(but I don't think somebody can click as fast as this can be observed).
More details about this implementation can be read on my blog post,part 5:
http://www.engineering-diy.blogspot.ro/2013/02/raspberry-pi-raspbian-xbmc-and-egalax-7.html

Regards