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new method 'getAxpectRatio' with code taken from 'setAspectLocked' (#392)

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Co-authored-by: Ogi Moore <ognyan.moore@gmail.com>
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Karl Georg Bedrich 2020-06-01 20:24:18 +02:00 committed by GitHub
parent 983cc1695e
commit ca9b0c7910
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1 changed files with 12 additions and 6 deletions
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18
pyqtgraph/graphicsItems/ViewBox/ViewBox.py
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@ -233,6 +233,17 @@ class ViewBox(GraphicsWidget):
if name is None:
self.updateViewLists()
def getAspectRatio(self):
'''return the current aspect ratio'''
rect = self.rect()
vr = self.viewRect()
if rect.height() == 0 or vr.width() == 0 or vr.height() == 0:
currentRatio = 1.0
else:
currentRatio = (rect.width()/float(rect.height())) / (
vr.width()/vr.height())
return currentRatio
def register(self, name):
"""
Add this ViewBox to the registered list of views.
@ -1134,12 +1145,7 @@ class ViewBox(GraphicsWidget):
return
self.state['aspectLocked'] = False
else:
rect = self.rect()
vr = self.viewRect()
if rect.height() == 0 or vr.width() == 0 or vr.height() == 0:
currentRatio = 1.0
else:
currentRatio = (rect.width()/float(rect.height())) / (vr.width()/vr.height())
currentRatio = self.getAspectRatio()
if ratio is None:
ratio = currentRatio
if self.state['aspectLocked'] == ratio: # nothing to change