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Old 08-22-2008, 12:26 PM   #1
ErV
Senior Member
 
Registered: Mar 2007
Location: Russia
Distribution: Slackware 12.2
Posts: 1,202
Blog Entries: 3

Rep: Reputation: 62
Question Pressure control on gimp-2.4.7, slackware 12.1, G-Pen 450.


Hello.

I'm trying to make pressure control work in gimp-2.4.7 on G-Pen 450 graphic tablet, on slackware 12.1.

Problem:
1) If in Edit->preferences->Input Devices->configure advanced input devices, tablet device mode is set to "disabled", pressure control doesn't work and I can draw only lines with constant thickness/opacity/etc. (as with mouse)
2) If in Edit->preferences->Input Devices->configure advanced input devices, tablet device mode is set to "Screen" or "Window", pressure control doesn't work, because when I press pen, pen cursor stops moving (i.e. freezes) until I stop pressing it. I.e. I can place "dots" by pen, but can't draw lines.

Additional info:
1) Pressure controls work fine in inkscape (version 0.46) or krita (from KDE 3.5.7). Krita detects presure automatically (because device is named as "stylus"), inkscape can use it, when in file->input devices device mode is set to "screen" or "window". However when I'm trying to use similar settings for tablet in gimp, cursor simply freezes when I try to draw something.
2) gimp 2.4.7 is built from source. In the gimp-2.4.5 (bundled with slackware 12.1) pressure controls didn't work either.
3) I'm using wizardpen 0.6.0.2 driver.
4) I've been using this and this HOWTOs to setup tablet. Unfortunately, HOWTOs has gimp-related content removed, and FAQ on gimp site doesn't seem to mention anything related to my problem.
5) Xorg.conf sections related to tablet(not sure if it's relevant to problem, because pressure control work in krita/inkscape):
Code:
...
Section "ServerLayout"
    Identifier     "X.org Configured"
    Screen      0  "Screen0" 0 0
    InputDevice    "Mouse0" "CorePointer"
    InputDevice    "Keyboard0" "CoreKeyboard"
    InputDevice	   "stylus" "SendCoreEvents"
EndSection
...
Section "InputDevice"
	Identifier      "stylus"
	driver          "wizardpen"
	Option		"Type"		"stylus"
        Option          "Device"        "/dev/tablet-event"
	Option          "TopX"          "157"
	Option          "TopY"          "85"
	Option          "BottomX"       "32739"
	Option          "BottomY"       "32745"
	Option          "MaxX"          "32739"
	Option          "MaxY"          "32745"
EndSection

...
6) pressure control work in windows version of gimp, version 2.4.5, but I'd like to make linux version work.

I'd like to know how to solve this problem and how to make pressure control to work in gimp on Linux (maybe I just missed some settings in gimp?). Suggestions are welcome.
 
Old 08-22-2008, 03:58 PM   #2
ErV
Senior Member
 
Registered: Mar 2007
Location: Russia
Distribution: Slackware 12.2
Posts: 1,202
Blog Entries: 3

Original Poster
Rep: Reputation: 62
Problem solved. In extremely strange way.
Code:
Section "ServerLayout"
    Identifier     "X.org Configured"
    Screen      0  "Screen0" 0 0
    #InputDevice    "Mouse0" "CorePointer"
    InputDevice    "Keyboard0" "CoreKeyboard"
    InputDevice	   "stylus" "SendCoreEvents"
EndSection
After commenting out Mouse input device within "serverlayout" section, everything works fine. Mouse still works. I've found solution here.
 
  


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