Support returning physical size of the canvas.

QuLogic · QuLogic · commit 8d78315cc9eb · 2020-12-24T22:46:06.000-05:00
diff --git a/lib/matplotlib/backend_bases.py b/lib/matplotlib/backend_bases.py
@@ -2094,17 +2094,24 @@ def _set_device_pixel_ratio(self, ratio):
         self._device_pixel_ratio = ratio
         return True
 
-    def get_width_height(self):
+    def get_width_height(self, physical=False):
         """
         Return the figure width and height in integral points or pixels.
 
+        Parameters
+        ----------
+        physical : bool, default: False
+            Whether to return true physical pixels or logical pixels. Physical
+            pixels may be used by backends that support HiDPI, but still
+            configure the canvas using its actual size.
+
         Returns
         -------
         width, height : int
             The size of the figure, in points or pixels, depending on the
             backend.
         """
-        return tuple(int(size / self.device_pixel_ratio)
+        return tuple(int(size / (1 if physical else self.device_pixel_ratio))
                      for size in self.figure.bbox.max)
 
     @classmethod
