8000 Update to Bounding Box for Qt5 FigureCanvasATAgg.paintEvent() by pshriwise · Pull Request #14310 · matplotlib/matplotlib · GitHub
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Update to Bounding Box for Qt5 FigureCanvasATAgg.paintEvent() #14310

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Update to Bounding Box for Qt5 FigureCanvasATAgg.paintEvent() #14310

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10 changes: 6 additions & 4 deletions lib/matplotlib/backends/backend_qt5agg.py
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Original file line number Diff line number Diff line change
Expand Up @@ -45,9 +45,11 @@ def paintEvent(self, event):
height = rect.height()
# See documentation of QRect: bottom() and right() are off by 1, so use
# left() + width() and top() + height().
bbox = Bbox(
[[left, self.renderer.height - (top + height * self._dpi_ratio)],
[left + width * self._dpi_ratio, self.renderer.height - top]])

bbox = Bbox([[0,0], [self.renderer.width, self.renderer.height]])
l, b, r, t = map(int, bbox.extents)
w = r - l
h = t - b
reg = self.copy_from_bbox(bbox)
buf = cbook._unmultiplied_rgba8888_to_premultiplied_argb32(
memoryview(reg))
Expand All @@ -60,7 +62,7 @@ def paintEvent(self, event):
if hasattr(qimage, 'setDevicePixelRatio'):
# Not available on Qt4 or some older Qt5.
qimage.setDevicePixelRatio(self._dpi_ratio)
origin = QtCore.QPoint(left, top)
origin = QtCore.QPoint(l, self.renderer.height - t)
painter.drawImage(origin / self._dpi_ratio, qimage)
# Adjust the buf reference count to work around a memory
# leak bug in QImage under PySide on Python 3.
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