invalid coordinates on release

[DerDakon]

The linear plugin will set the coordinates of a release event to 0, 0. Afterwards the calibration will be applied to it, so these coordinates become "random" (from a users perspective). For me it usually was something like -11, -9. This breaks e.g. the missing coordinates detection in Qt in all versions up to 5.12.2 fix in review. Maybe the calibration should be guarded by something like this:

if (pressure != 0 || samp->x != 0 || samp->y !=0)

[merge]

what tslib modules do you use, i.e. how does your ts.conf file look like?

thanks for reporting this. maybe we shouldn't have zeros in a release event...

[DerDakon]

module_raw input
module linear

Looks like it is the other plugin that set the coordinates to 0 and then linear breaks it, but anyway.

[merge]

while I think about it I guess the fix in Qt in ok. This should only apply to the the legacy interface that Qt is using. If pressure is 0, you shouldn't evaluate the x/y coordinates there.

It's about time to implement ts_read_mt() in qtslib... (#ifdef TSLIB_VERSION_MT).

[merge]

again, thanks for reporting this. seems to be fixed in Qt.