Merge pull request #23276 from scottjones03/patch-1

tacaswell · web-flow · commit d417b9828c2d · 2022-06-16T23:10:28.000-04:00
MNT: Add get/set methods for DPI in SubFigure
diff --git a/lib/matplotlib/figure.py b/lib/matplotlib/figure.py
@@ -2046,6 +2046,23 @@ def dpi(self):
     def dpi(self, value):
         self._parent.dpi = value
 
+    def get_dpi(self):
+        """
+        Return the resolution of the parent figure in dots-per-inch as a float.
+        """
+        return self._parent.dpi
+
+    def set_dpi(self, val):
+        """
+        Set the resolution of parent figure in dots-per-inch.
+
+        Parameters
+        ----------
+        val : float
+        """
+        self._parent.dpi = val
+        self.stale = True
+
     def _get_renderer(self):
         return self._parent._get_renderer()
 
diff --git a/lib/matplotlib/tests/test_figure.py b/lib/matplotlib/tests/test_figure.py
@@ -1109,6 +1109,16 @@ def test_subfigure_tightbbox():
             8.0)
 
 
+def test_subfigure_dpi():
+    fig = plt.figure(dpi=100)
+    sub_fig = fig.subfigures()
+    assert sub_fig.get_dpi() == fig.get_dpi()
+
+    sub_fig.set_dpi(200)
+    assert sub_fig.get_dpi() == 200
+    assert fig.get_dpi() == 200
+
+
 @image_comparison(['test_subfigure_ss.png'], style='mpl20',
                   savefig_kwarg={'facecolor': 'teal'})
 def test_subfigure_ss():
