[GRASS-dev] empty map window/map rendering doesn't work (wxgui)

[Michael Barton]

On Mar 15, 2009, at 3:19 PM, <grass-dev-request at lists.osgeo.org> wrote:

> From: Huidae Cho <grass4u at gmail.com>
> Date: March 15, 2009 3:21:14 PM GMT-07:00
> To: grass-dev at lists.osgeo.org
> Cc: grass-user at lists.osgeo.org, Martin Landa <landa.martin at gmail.com>
> Subject: [GRASS-dev] empty map window/map rendering doesn't work  
> (wxgui)
>
>
> Hi,
>
> I'm having a similar problem to this one after updating my repository
> (grass/trunk) yesterday.  I installed SWIG, wxPython (version  
> 2.8.9.2),
> and wxWidgets (version 2.8.9.2, --enable-graphics_ctx), but my Cairo
> version is 1.4.10, which means no g.cairocomp.
>
> My error message looks like this:
> ----------------
> Traceback (most recent call last):
>  File "/home/geni/usr/grass/grass-trunk/dist.i686-pc-linux-
> gnu/etc/wxpython/gui_modules/mapdisp_window.py", line 448,
> in OnPaint
>
> self.pdc.DrawToDCClipped(dc, rgn)
>  File "/home/geni/usr/grass/grass-trunk/dist.i686-pc-linux-
> gnu/etc/wxpython/vdigit/grass7_wxvdigit.py", line 384, in
> DrawToDCClipped
>
> def DrawToDCClipped(self, *args): return
> _grass7_wxvdigit.PseudoDC_DrawToDCClipped(self, *args)
> TypeError
> :
> in method 'PseudoDC_DrawToDCClipped', argument 2 of type
> 'void *'
> Traceback (most recent call last):
>  File "/home/geni/usr/grass/grass-trunk/dist.i686-pc-linux-
> gnu/etc/wxpython/gui_modules/mapdisp_window.py", line 540,
> in OnIdle
>
> self.UpdateMap(render=True)
>  File "/home/geni/usr/grass/grass-trunk/dist.i686-pc-linux-
> gnu/etc/wxpython/gui_modules/mapdisp_window.py", line 665,
> in UpdateMap
>
> self.Draw(self.pdc, self.img, drawid=id)
>  File "/home/geni/usr/grass/grass-trunk/dist.i686-pc-linux-
> gnu/etc/wxpython/gui_modules/mapdisp_window.py", line 264,
> in Draw
>
> pdc.SetBackground(bg)
>  File "/home/geni/usr/grass/grass-trunk/dist.i686-pc-linux-
> gnu/etc/wxpython/vdigit/grass7_wxvdigit.py", line 374, in
> SetBackground
>
> def SetBackground(self, *args): return
> _grass7_wxvdigit.PseudoDC_SetBackground(self, *args)
> TypeError
> :
> in method 'PseudoDC_SetBackground', argument 2 of type
> 'wxBrush const &'
> ----------------
>
> I took a closer look at the code of _wrap_PseudoDC_DrawToDCClipped
> (grass7_wxvdigit_wrap.cpp) and SWIG_IsOK, and SWIG_ConvertPtr
> (swig-1.3.38/Lib/python/pyrun.swg).
>
> To get the above error (i.e., !SWIG_IsOK(res2)), SWIG_ConvertPtr(obj1,
> SWIG_as_voidptrptr(&arg2), 0, 0) or SWIG_Python_ConvertPtrAndOwn(obj1,
> SWIG_as_voidptrptr(&arg2), 0, 0) should return a negative integer.   
> What
> happens in SWIG_Python_ConvertPtrAndOwn is that it returns SWIG_ERROR
> (-1) when (obj1 is NULL) or (SWIG_Python_GetSwigThis(obj1) is NULL
> and flags (the last argument, 0) is 0).
>
> This error starts from self.pdc.DrawToDCClipped(dc, rgn) in
> mapdisp_window.py, and obj1 is dc in this call.  Is dc NULL?  No, it
> isn't.  "print dc" displays "<wx._gdi.BufferedPaintDC; proxy of <Swig
> Object of type 'wxBufferedPaintDC *' at 0x9427940> >".  Then, did
> SWIG_Python_GetSwigThis return NULL?  Probably...
>
> This error occurs even before calling gwxPseudoDC_DrawToDCClipped,  
> so I
> think just chaning the prototype of DrawToDCClipped in pseudodc.i as  
> in
> revision 36252 cannot solve this problem (and, actually, it didn't).
>
> Could it be my wxWidget configure flags?  --enable-unicode
> --enable-sound --enable-graphics_ctx --with-sdl --with-opengl
>
> Any ideas?
>
> Thanks.
> Huidae

I updated last night and am having no problems like this with 6.5 or 7  
(on Mac OS X).

Michael
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.osgeo.org/pipermail/grass-dev/attachments/20090315/d0ecdf0b/attachment.html