Prevent dialog from moving label/bar widgets on resize when nested

examples/ProgressDialog.py

@@ -13,11 +13,11 @@ app = QtGui.QApplication([])
 
 
 def runStage(i):
-    """Waste time for 3 seconds while incrementing a progress bar.
+    """Waste time for 2 seconds while incrementing a progress bar.
     """
     with pg.ProgressDialog("Running stage %s.." % i, maximum=100, nested=True) as dlg:
         for j in range(100):
-            time.sleep(0.03)
+            time.sleep(0.02)
             dlg += 1
             if dlg.wasCanceled():
                 print("Canceled stage %s" % i)

pyqtgraph/widgets/ProgressDialog.py

@@ -183,6 +183,12 @@ class ProgressDialog(QtGui.QProgressDialog):
             self._nestableWidgets = (sw, btn)
             
         return self._nestableWidgets
+    
+    def resizeEvent(self, ev):
+        if self._nestingReady:
+            # don't let progress dialog manage widgets anymore.
+            return
+        return QtGui.QProgressDialog.resizeEvent(self, ev)
 
     ## wrap all other functions to make sure they aren't being called from non-gui threads