Handle modification of RadioButtons.activecolor

Author: QuLogic

lib/matplotlib/tests/test_widgets.py

@@ -1060,6 +1060,17 @@ def test_radio_button_active_conflict(ax):
     assert mcolors.same_color(rb._buttons.get_facecolor(), ['green', 'none'])
 
 
+@check_figures_equal(extensions=['png'])
+def test_radio_buttons_activecolor_change(fig_test, fig_ref):
+    widgets.RadioButtons(fig_ref.subplots(), ['tea', 'coffee'],
+                         activecolor='green')
+
+    # Test property setter.
+    cb = widgets.RadioButtons(fig_test.subplots(), ['tea', 'coffee'],
+                              activecolor='red')
+    cb.activecolor = 'green'
+
+
 @check_figures_equal(extensions=["png"])
 def test_check_buttons(fig_test, fig_ref):
     widgets.CheckButtons(fig_test.subplots(), ["tea", "coffee"], [True, True])

lib/matplotlib/widgets.py

@@ -1634,7 +1634,7 @@ def __init__(self, ax, labels, active=0, activecolor=None, *,
         else:
             activecolor = 'blue'  # Default.
 
-        self.activecolor = activecolor
+        self._activecolor = activecolor
         self.value_selected = labels[active]
 
         ax.set_xticks([])
@@ -1750,6 +1750,21 @@ def set_radio_props(self, props):
             [activecolor if text.get_text() == self.value_selected else "none"
              for text, activecolor in zip(self.labels, self._active_colors)])
 
+    @property
+    def activecolor(self):
+        return self._activecolor
+
+    @activecolor.setter
+    def activecolor(self, activecolor):
+        colors._check_color_like(activecolor=activecolor)
+        self._activecolor = activecolor
+        self.set_radio_props({'facecolor': activecolor})
+        # Make sure the deprecated version is updated.
+        # Remove once circles is removed.
+        labels = [label.get_text() for label in self.labels]
+        with cbook._setattr_cm(self, eventson=False):
+            self.set_active(labels.index(self.value_selected))
+
     def set_active(self, index):
         """
         Select button with number *index*.