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Fully save all GraphicsContext variables for MacOS backend #4202

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Fully save all GraphicsContext variables for MacOS backend #4202

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ENH/BUG: Fully save all GraphicsContext variables to a stack for the … 
…GraphicsContextMac class
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@cimarronm
cimarronm committed Mar 8, 2015
commit 9b9f2f9a76cd60dafad9e39e9c0f417ac44b29b4
11 changes: 11 additions & 0 deletions lib/matplotlib/backends/backend_macosx.py
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Original file line number Diff line number Diff line change
Expand Up @@ -185,6 +185,17 @@ class GraphicsContextMac(_macosx.GraphicsContext, GraphicsContextBase):
def __init__(self):
GraphicsContextBase.__init__(self)
_macosx.GraphicsContext.__init__(self)
self._savestack = []

def save(self):
savedvars = vars(self).copy()
savedvars.pop('_savestack', None)
self._savestack.append(savedvars)
_macosx.GraphicsContext.save(self)

def restore(self):
_macosx.GraphicsContext.restore(self)
vars(self).update(self._savestack.pop())

def set_alpha(self, alpha):
GraphicsContextBase.set_alpha(self, alpha)
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