Hi,
While testing the wacom tablet driver with xinput2 on the Lenovo Thinkpad
x230t (ISDv4 E6) running xf86-input-wacom-0.21.99.1 we noticed some things
that seem strange:
(Testing was done using 'xinput --test-xi2 <pen_device_id>' and "Option
'Gesture' 'Off'" in xorg.conf)
1. When moving the pen into proximity (without touching the surface) and
then
pressing the pen-button, no RawButtonPress events are generated, while
releasing the button gives us a RawButtonRelease event. The xf86-input-evdev
driver raises that event.
2. Another issue can be described as follows:
=============== =============================== ==========================
Action Event(actually) Event(expected)
=============== =============================== ==========================
pen-down RawButtonPress(detail=1) RawButtonPress(detail=1)
pen-button-down RawButtonRelease(detail=1) RawButtonPress(detail=3)
RawButtonPress(detail=3)
pen-button-up RawButtonRelease(detail=1) RawButtonRelease(detail=3)
RawButtonRelease(detail=3)
pen-up RawButtonRelease(detail=1) RawButtonRelease(detail=1)
=============== =============================== ==========================
=============== =============================== ==========================
Action Event(actually) Event(expected)
=============== =============================== ==========================
pen-down RawButtonPress(detail=1) RawButtonPress(detail=1)
pen-button-down RawButtonRelease(detail=1) RawButtonPress(detail=3)
RawButtonPress(detail=3)
pen-up RawButtonRelease(detail=3) RawButtonRelease(detail=1)
pen-button-up RawButtonRelease(detail=3) RawButtonRelease(detail=3)
=============== =============================== ==========================
3. Why does the pen-button generate RawButton{Press,Release} events with
detail=3 by default? The evdev driver emits events with detail=2. This
is not
that nice when trying to support both out of the box.
4. Additionally, when working with the Qt5-Library the Touchpanel does
not work.
We tracked that down to the fact, that Qt watches for event-valuators with
atoms AbsMTPosition{X,Y} while the driver labels the valuators with
Abs{X,Y}.
This is probably implmented that way because the xf86-input-evdev uses these
atoms. Is this a bug in xf86-input-evdev or in the xf86-input-wacom driver?
We hope to hear some thoughts on these issues, and will gladly provide more
information if needed.
Greetings
Hendrik Woidt
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