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Honouring the alpha attribute when creating composite images. #1955

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Merged
pelson merged 4 commits into from
May 13, 2013
Merged

Honouring the alpha attribute when creating composite images. #1955

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2f10e68
Take Image object's alpha attribute into account when compositing mul…
Westacular Apr 25, 2013
547cb7b
Fix Cairo backend so Images are actually visible for output formats o…
Westacular Apr 26, 2013
04ee71e
Add a test case for compositing images with an alpha attribute
Westacular Apr 27, 2013
baeb6de
Updated test, and added a check for tuple length
Westacular May 8, 2013
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Fix Cairo backend so Images are actually visible for output formats o… 
…ther than PNG.
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@Westacular
Westacular committed May 3, 2013
commit 547cb7bf289e6413daa09592b3c150886ff5fd47
3 changes: 3 additions & 0 deletions lib/matplotlib/backends/backend_cairo.py
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Expand Up @@ -163,8 +163,11 @@ def draw_image(self, gc, x, y, im):
buf, cairo.FORMAT_ARGB32, cols, rows, cols*4)
ctx = gc.ctx
y = self.height - y - rows

ctx.save()
ctx.set_source_surface (surface, x, y)
ctx.paint()
ctx.restore()

im.flipud_out()

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