Remove calls to processEvent which are short-circuiting the draw even…

…t in Qt4.

Something in our draw event is triggering another draw event during resizing. processEvent immediately moves to the next draw event.
For X11, menus and toolbars became corrupted and crashes occurred. For Mac, the map canvas did not resize at all. The following warnings were appearing on the console: "QWidget::repaint: recursive repaint detected" and "QPixmap::operator=: Cannot assign to pixmap during painting."
Event processing to capture a keyboard cancel command should be reinstated when the source of the recursion is found and fixed.


git-svn-id: http://svn.osgeo.org/qgis/trunk/qgis@4753 c8812cc2-4d05-0410-92ff-de0c093fc19c

src/gui/qgsvectorlayer.cpp

@@ -417,7 +417,9 @@ void QgsVectorLayer::drawLabels(QPainter * p, QgsRect * viewExtent, QgsMapToPixe
 #ifdef QGISDEBUG
     std::cerr << "Total features processed is " << featureCount << std::endl;
 #endif
-    qApp->processEvents();
+    // XXX Something in our draw event is triggering an additional draw event when resizing [TE 01/26/06]
+    // XXX Calling this will begin processing the next draw event causing image havoc and recursion crashes.
+    //qApp->processEvents();
 
   }
 }
@@ -876,7 +878,9 @@ void QgsVectorLayer::draw(QPainter * p, QgsRect * viewExtent, QgsMapToPixel * th
         //      std::cout << "QgsVectorLayer::draw: got " << fet->featureId() << std::endl; 
 #endif
 
-        qApp->processEvents(); //so we can trap for esc press
+        // XXX Something in our draw event is triggering an additional draw event when resizing [TE 01/26/06]
+        // XXX Calling this will begin processing the next draw event causing image havoc and recursion crashes.
+        //qApp->processEvents(); //so we can trap for esc press
         if (mDrawingCancelled) return;
         // If update threshold is greater than 0, check to see if
         // the threshold has been exceeded
@@ -968,7 +972,9 @@ void QgsVectorLayer::draw(QPainter * p, QgsRect * viewExtent, QgsMapToPixel * th
 #ifdef QGISDEBUG
     std::cerr << "Total features processed is " << featureCount << std::endl;
 #endif
-    qApp->processEvents();
+    // XXX Something in our draw event is triggering an additional draw event when resizing [TE 01/26/06]
+    // XXX Calling this will begin processing the next draw event causing image havoc and recursion crashes.
+    //qApp->processEvents();
   }
   else
   {