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Fix image plotting in Cairo backends - #6602
tacaswell merged 2 commits into
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Call cairo.ImageSurface.create_for_data with an array that both py2cairo and cairocffi knows how to get a pointer too and size of
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More testing. Cairocffi works correctly with GTK3 if py2/3cairo is installed but not otherwise. This is probably just a concequense of the fact that gtk/pygobject is build against py2/3cairo so it can't function without. The gtk2 backend however breaks if Cairocffi is installed |
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The issue with cairocffi and GKT2 is not new and can be reproduced on 1.5.x Traceback (most recent call last):
File "/usr/local/lib/python2.7/site-packages/matplotlib/backends/backend_gtk.py", line 438, in expose_event
self._render_figure(self._pixmap, w, h)
File "/usr/local/lib/python2.7/site-packages/matplotlib/backends/backend_gtk.py", line 426, in _render_figure
self.figure.draw (self._renderer)
File "/usr/local/lib/python2.7/site-packages/matplotlib/artist.py", line 62, in draw_wrapper
draw(artist, renderer, *args, **kwargs)
File "/usr/local/lib/python2.7/site-packages/matplotlib/figure.py", line 1159, in draw
func(*args)
File "/usr/local/lib/python2.7/site-packages/matplotlib/artist.py", line 62, in draw_wrapper
draw(artist, renderer, *args, **kwargs)
File "/usr/local/lib/python2.7/site-packages/matplotlib/axes/_base.py", line 2319, in draw
a.draw(renderer)
File "/usr/local/lib/python2.7/site-packages/matplotlib/artist.py", line 62, in draw_wrapper
draw(artist, renderer, *args, **kwargs)
File "/usr/local/lib/python2.7/site-packages/matplotlib/image.py", line 394, in draw
renderer.draw_image(gc, l, b, im)
File "/usr/local/lib/python2.7/site-packages/matplotlib/backends/backend_cairo.py", line 181, in draw_image
ctx.set_source_surface (surface, x, y)
TypeError: must be cairo.Surface, not ImageSurface |
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@QuLogic Can you do the 2.x into master merge? |
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Neither commit message indicates it should be closed, so that did nothing. But I ask because there are some items unchecked here... |
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oh, yes, close this. We decided that those platforms are not a) already broken on 1.5 and b) old c) otherwise non-functional |
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WIP solution to #6562
Call cairo.ImageSurface.create_for_data with an array that both py2cairo and cairocffi knows how to get a pointer too and size of.
This seems to correctly resolve the issue for the Cairo backend but not the GTK(3)Cairo backends.
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