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Fix stale draws on MacOSX backend #9549

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Merged
merged 2 commits into from
Oct 24, 2017
Merged

Fix stale draws on MacOSX backend #9549

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4a9ced6
MNT: Remove duplicated get_renderer
dopplershift Oct 23, 2017
cb25f2e
BUG: Fix stale rendering on MacOSX backend (Fixes #8282)
dopplershift Oct 23, 2017
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BUG: Fix stale rendering on MacOSX backend (Fixes #8282) 
Unlike on other backends (like Qt), MacOSX backend was never telling the
renderer to clear. This resulted in draws that would happen on top of
the previous Agg buffer. It seems enough to clear the renderer if the
figure is stale.
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@dopplershift
dopplershift committed Oct 24, 2017
commit cb25f2ef78e5113148e142a73ba25a7b166a921e
2 changes: 1 addition & 1 deletion 2 lib/matplotlib/backends/backend_macosx.py
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Original file line number Diff line number Diff line change
Expand Up @@ -77,7 +77,7 @@ def _set_device_scale(self, value):
self._device_scale = value

def _draw(self):
renderer = self.get_renderer()
renderer = self.get_renderer(cleared=self.figure.stale)

if self.figure.stale:
self.figure.draw(renderer)
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