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Ensure exported images use integer dimensions.

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It seems that the parameter tree doesn't enforce the int type very
strongly.

Also, use some local variables more often.
This commit is contained in:
Elliott Sales de Andrade 2016-07-09 20:25:52 -04:00
parent 584c4516f0
commit 3edbef6c57
1 changed files with 10 additions and 10 deletions
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20
pyqtgraph/exporters/ImageExporter.py
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@ -58,17 +58,17 @@ class ImageExporter(Exporter):
filter.insert(0, p)
self.fileSaveDialog(filter=filter)
return
targetRect = QtCore.QRect(0, 0, self.params['width'], self.params['height'])
sourceRect = self.getSourceRect()
#self.png = QtGui.QImage(targetRect.size(), QtGui.QImage.Format_ARGB32)
#self.png.fill(pyqtgraph.mkColor(self.params['background']))
w, h = self.params['width'], self.params['height']
w = int(self.params['width'])
h = int(self.params['height'])
if w == 0 or h == 0:
raise Exception("Cannot export image with size=0 (requested export size is %dx%d)" % (w,h))
bg = np.empty((self.params['height'], self.params['width'], 4), dtype=np.ubyte)
raise Exception("Cannot export image with size=0 (requested "
"export size is %dx%d)" % (w, h))
targetRect = QtCore.QRect(0, 0, w, h)
sourceRect = self.getSourceRect()
bg = np.empty((h, w, 4), dtype=np.ubyte)
color = self.params['background']
bg[:,:,0] = color.blue()
bg[:,:,1] = color.green()