Merge pull request #150 from lidstrom83/ViewBox_panning_fix
Speed up ViewBox panning
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4b484ae46d
@ -1280,8 +1280,10 @@ class ViewBox(GraphicsWidget):
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## update shape of scale box
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self.updateScaleBox(ev.buttonDownPos(), ev.pos())
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else:
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tr = dif*mask
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tr = self.mapToView(tr) - self.mapToView(Point(0,0))
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tr = self.childGroup.transform()
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tr = fn.invertQTransform(tr)
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tr = tr.map(dif*mask) - tr.map(Point(0,0))
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x = tr.x() if mask[0] == 1 else None
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y = tr.y() if mask[1] == 1 else None
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