[Bug 30893] New: No pressure in gimp 2.8 windows version with evdev tablet

http://bugs.winehq.org/show_bug.cgi?id=30893

Bug #: 30893
           Summary: No pressure in gimp 2.8 windows version with evdev
                    tablet
           Product: Wine
           Version: 1.5.5
          Platform: x86-64
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: wintab32
        AssignedTo: [e-mail]
        ReportedBy: [e-mail]
    Classification: Unclassified

Created attachment 40482
  --> http://bugs.winehq.org/attachment.cgi?id=40482
Output of gimp 2.8 windows version with WINEDEBUG=+wintab32

I got an Genius Mousepen i608X tablet. It works only with the evdev driver. (I
am using xubuntu 64 bit with a patched kernel (which includes the driver of
this tablet on a VM.)) I have got no pressure in gimp 2.8 windows version.
(Gimp 2.8 linux version works perfectly on the same operating system.)

In the attachment log you can see that it reports as a tablet:
trace:wintab32:X11DRV_LoadTabletInfo Device 10:  [id 12|name Genius MousePen
i608X|type TABLET|num_classes 2|use 4]
but at the end wine writes:
warn:wintab32:X11DRV_LoadTabletInfo Did not find a valid stylus, unable to
determine system context parameters. Wintab is disabled.

Which is wrong. I attached the output of xinput list --long (xinput.txt), so
you can see clearly which device reports what. (I guess I should add that
attachment separately because the bug can contain only one attachment.)

One thing to note: this device comes with a mouse too. And the kernel gives
identical name to both devices. (That is the reason why you can fin 2 mousepens
in the logs. The one with the id=12 is the pen, because this one is reporting
the pressure, the other one is the mouse.)

In my opinion if you modify the wine source/dlls/winex11.drv/wintab.c according
to this:
in line 622 you write this:
if (! is_tablet_cursor(target->name, device_type) && ! devices[loop].type ==
XInternAtom(data->display, XI_TABLET, False))
in line 641 you write this:
if (is_stylus(target->name, device_type) || devices[loop].type ==
XInternAtom(data->display, XI_TABLET, False))
my tablet will be recognised.

Unfortunately I was not able to test if this is going to work or not, because I
was not able to build wine properly so far.
(Gimp 2.8 windows version was always crashed with the one I have built, but the
tablet was recognised as tablet though.)

You can find a list of tablets which are using the evdev driver here:
http://sourceforge.net/apps/mediawiki/digimend/index.php?title=Tablet_suppor...

If you have any questions please let me know.