On Sat, Jul 24, 2010 at 1:56 PM, Benjamin Root <ben.r...@ou.edu> wrote: > On Sat, Jul 24, 2010 at 12:17 PM, João Luís Silva <jsi...@fc.up.pt> wrote: >> >> On 07/13/2010 02:31 AM, John Hunter wrote: >>> >>> On Mon, Jul 12, 2010 at 8:05 PM, John Hunter<jdh2...@gmail.com> wrote: >>>> >>>> All of which is discouraging: we both see bugs but different ones on >>>> linux, the appearance of the bug is caused by adding a combobox which >>>> is not used (on my system), the bug appears on some platforms (linux) >>>> but not others (win) and it appears for both gtk and gtkagg. >>> >>> The last thing I'll add for now is that my bug, the black pixel noise >>> (fills the axes window when motion starts in a zoom-to-rect event) >>> which may be unrelated to your bug, is happening in >>> backend_gtk.NavigationToolbar2GTK.draw_rubberband in the pair of >>> calls: >>> >>> # this is used to copy the background that the zoom to rect >>> "rubberband" will be drawn over >>> self._imageBack = axrect, drawable.get_image(*axrect) >>> >>> # this is used to restore the background before redrawing the >>> rectangle for the zoom box >>> drawable.draw_image(gc, imageBack, 0, 0, *lastrect) >>> >>> Since the bug is only exposed when a combo box is added to the >>> hierarchy, and appears to be platform or gtk specific, I'm suspecting >>> a gtk bug at this point. But I don't have anything conclusive or a >>> minimal example which I could use to post to the gtk list. The mpl >>> calls and values (axrect, lastrect, etc) look correct on inspection. >>> Somehow the call to drawable.get_image is getting a buffer full of >>> noise if and only if the combobox is added to the vbox. >>> >>> JDH >> >> >From what I could understand from the pygtk documentation get_image / >> draw_image are client-side operations. In particular: >> >> "If the source drawable is a Gdk::Window and partially offscreen or >> obscured, then the obscured portions of the returned image will contain >> undefined data." >> >> Anyway they recommend using Pixmap, which is server-side and a offscreen >> drawable. I've attached a patch that replaces the get_image / draw_image >> with Pixmap operations and fixes this bug. I've tested this patch on Linux >> and Windows. >> >> Regards, >> João Luís > > The patch works for me. I am using the mpl from svn.
Have you tested with any of the animation and blit examples? How about some of the widget examples? If all these work for you, I suggest committing it to the branch and merging to the trunk. Thanks, JDH ------------------------------------------------------------------------------ This SF.net email is sponsored by Sprint What will you do first with EVO, the first 4G phone? Visit sprint.com/first -- http://p.sf.net/sfu/sprint-com-first _______________________________________________ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
