ASCEE/pyqtgraph
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ImageItem render error if graph is too small.

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Fixed issue where render would error because 'mapToDevice' would return None if the view size was too small.
This commit is contained in:
HashSplat 2017-08-31 08:55:58 -04:00
parent dd672c41b6
commit 1ea4f5ab6f
1 changed files with 5 additions and 0 deletions
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5
pyqtgraph/graphicsItems/ImageItem.py
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@ -358,6 +358,11 @@ class ImageItem(GraphicsObject):
o = self.mapToDevice(QtCore.QPointF(0,0)) o = self.mapToDevice(QtCore.QPointF(0,0))
x = self.mapToDevice(QtCore.QPointF(1,0)) x = self.mapToDevice(QtCore.QPointF(1,0))
y = self.mapToDevice(QtCore.QPointF(0,1)) y = self.mapToDevice(QtCore.QPointF(0,1))
# Check if graphics view is too small to render anything
if o is None or x is None or y is None:
return
w = Point(x-o).length() w = Point(x-o).length()
h = Point(y-o).length() h = Point(y-o).length()
if w == 0 or h == 0: if w == 0 or h == 0: