[FEATURE]: center map if user clicks into the map (patch 2278 provide…

…d by smizuno) git-svn-id: http://svn.osgeo.org/qgis/trunk@13342 c8812cc2-4d05-0410-92ff-de0c093fc19c
qgis · Apr 21, 2010 · cb490ae · cb490ae
1 parent e01984c
commit cb490ae
Showing 1 changed file with 16 additions and 14 deletions.
diff --git a/src/gui/qgsmaptoolpan.cpp b/src/gui/qgsmaptoolpan.cpp
@@ -17,6 +17,7 @@
 #include "qgsmaptoolpan.h"
 #include "qgsmapcanvas.h"
 #include "qgscursors.h"
+#include "qgsmaptopixel.h"
 #include <QBitmap>
 #include <QCursor>
 #include <QMouseEvent>
@@ -34,28 +35,29 @@ QgsMapToolPan::QgsMapToolPan( QgsMapCanvas* canvas )
 
 void QgsMapToolPan::canvasMoveEvent( QMouseEvent * e )
 {
-  if ( mDragging && ( e->buttons() & Qt::LeftButton ) )
+  if (( e->buttons() & Qt::LeftButton ) )
   {
+    mDragging = true;
     // move map and other canvas items
     mCanvas->panAction( e );
   }
 }
 
-
-void QgsMapToolPan::canvasPressEvent( QMouseEvent * e )
-{
-  if ( e->button() == Qt::LeftButton )
-  {
-    mDragging = TRUE;
-  }
-}
-
-
 void QgsMapToolPan::canvasReleaseEvent( QMouseEvent * e )
 {
-  if ( mDragging && e->button() == Qt::LeftButton )
+  if ( e->button() == Qt::LeftButton )
   {
-    mCanvas->panActionEnd( e->pos() );
-    mDragging = FALSE;
+    if ( mDragging )
+    {
+      mCanvas->panActionEnd( e->pos() );
+      mDragging = FALSE;
+    }
+    else // add pan to mouse cursor
+    {
+      // transform the mouse pos to map coordinates
+      QgsPoint center = mCanvas->getCoordinateTransform()->toMapPoint( e->x(), e->y() );
+      mCanvas->setExtent( QgsRectangle( center, center ) );
+      mCanvas->refresh();
+    }
   }
 }