Fix zoom tool doesn't work from bottom right to top left (fix #12614)

nyalldawson · nyalldawson · commit 8d5c9adee87f · 2015-06-24T21:35:42.000+10:00
Cherry-picked from bfa9f1c
diff --git a/src/gui/qgsmaptoolzoom.cpp b/src/gui/qgsmaptoolzoom.cpp
@@ -103,6 +103,9 @@ void QgsMapToolZoom::canvasReleaseEvent( QMouseEvent * e )
     mZoomRect.setRight( e->pos().x() );
     mZoomRect.setBottom( e->pos().y() );
 
+    //account for bottom right -> top left dragging
+    mZoomRect = mZoomRect.normalized();
+
     // set center and zoom
     const QSize& zoomRectSize = mZoomRect.size();
     const QgsMapSettings& mapSettings = mCanvas->mapSettings();
