Fix handling of center handle

blink1073 · blink1073 · commit af6e1b46e888 · 2015-08-22T16:43:50.000-05:00
diff --git a/lib/matplotlib/tests/test_widgets.py b/lib/matplotlib/tests/test_widgets.py
@@ -119,7 +119,7 @@ def onselect(epress, erelease):
         pass
 
     tool = widgets.EllipseSelector(ax, onselect=onselect,
-                                     maxdist=10)
+                                   maxdist=10, interactive=True)
     tool.extents = (100, 150, 100, 150)
 
     # drag the rectangle
@@ -193,7 +193,7 @@ def onselect(epress, erelease):
     do_event(tool, 'press', xdata=132, ydata=132)
     do_event(tool, 'onmove', xdata=120, ydata=120)
     do_event(tool, 'release', xdata=120, ydata=120)
-    assert tool.extents == (108, 138, 108, 138)
+    assert tool.extents == (108, 138, 108, 138), tool.extents
 
     # create a new rectangle
     do_event(tool, 'press', xdata=10, ydata=10)
diff --git a/lib/matplotlib/widgets.py b/lib/matplotlib/widgets.py
@@ -1778,6 +1778,8 @@ def __init__(self, ax, onselect, drawtype='patch',
         if not self.interactive:
             self.artists = [self.to_draw]
 
+        self._extents_on_press = None
+
     def _press(self, event):
         """on button press event"""
         # make the drawed box/line visible get the click-coordinates,
@@ -1853,7 +1855,8 @@ def _onmove(self, event):
                 y2 = event.ydata
 
         # move existing shape
-        elif 'move' in self.state:
+        elif (('move' in self.state or self.active_handle == 'C')
+              and self._extents_on_press is not None):
             x1, x2, y1, y2 = self._extents_on_press
             dx = event.xdata - self.eventpress.xdata
             dy = event.ydata - self.eventpress.ydata
