Index: src/gui/qgsmapcanvas.cpp
===================================================================
--- src/gui/qgsmapcanvas.cpp	(revision 9071)
+++ src/gui/qgsmapcanvas.cpp	(working copy)
@@ -654,6 +654,18 @@
         }
         break;
 
+      case Qt::Key_PageUp:
+        QgsDebugMsg("Zoom in");
+
+        zoom(true);
+        break;
+
+      case Qt::Key_PageDown:
+        QgsDebugMsg("Zoom out");
+
+        zoom(false);
+        break;
+
       default:
         // Pass it on
         if(mMapTool)
@@ -798,10 +810,10 @@
     int height = lastSize.height();
     lastSize = QSize(-1,-1);
 
+    mMap->resize(QSize(width,height));
+
     mScene->setSceneRect(QRectF(0,0,width, height));
 
-    mMap->resize(QSize(width,height));
-
     // notify canvas items of change
     updateCanvasItemsPositions();