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

[wine-bugs at winehq.org]

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

--- Comment #5 from Viktoria <viktoria.s at freemail.hu> 2012-06-12 10:05:57 CDT ---
Created attachment 40518
  --> http://bugs.winehq.org/attachment.cgi?id=40518
My wintab.c

Hi!

I have compiled a wine and I could test it with some drawing applications. The
Gimp 2.8 windows version crashed even in this build, but Artrage and Pixia not.

So my initial idea worked, but I had to code a bit more to have pressure in
these applications. As I mentioned Genius MousePen i608X is a multiple input
device, both the mouse and the pen got identical names. And in the wintab.c in
X11DRV_AttachEventQueueToTablet function allways the mouse got identified
(because thet is the one which was last in the xinput list..). So I corrected
it: in line 1001 I wrote:
if (strcmp(devices[loop].name, cursorNameA) == 0 && 
gSysCursor[cur_loop].PHYSID == devices[loop].id)
In this way I got the correct wine cursor and X device mapping and now I got
pressure from the pen under wine :)
(This modification might be ban, I guess it is not a coincidence the you have
used the name instead of the device id for pairing but in case of multiple
input devices only the X device id can identify the devices or maybe name+type
together.)

(I have attached my wintab.c it contains some additional traces too.)

So as I mentioned in this way I got pressure in wine, but there are some
problems with the applications:
Artrage
I have downloaded it from here:
http://www2.ambientdesign.com/files/install_artrage_2.6.0_starter.exe.
And in this application I have got "ghost lines" (see the screenshot in one of
the attachments). The is reminds me of a bug in Gimp 2.6.11 linux version. You
can read more about it here:
http://ubuntuforums.org/showpost.php?p=11691071&postcount=32.
(May be the way it was fixed in Gimp can give you some idea how you can fix it
in wine.)

Pixia
I have downloaded it from here:
http://www.ne.jp/asahi/mighty/knight/pix478ee.exe
In this application the first stoke is always got maximum pressure  (see the
screenshot in one of the attachments). Which reminds me of a Blender bug here:
http://projects.blender.org/tracker/index.php?func=detail&aid=20667&group_id=9&atid=498
(May be the way it was/will be fixed in Blender can give you some idea how you
can fix it in wine.)

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