QGIS » QGIS Application

Index: src/gui/qgsmaptoolpan.cpp

===================================================================

--- src/gui/qgsmaptoolpan.cpp	(revision 12391)

+++ src/gui/qgsmaptoolpan.cpp	(working copy)

@@ -17,6 +17,7 @@

 #include "qgsmaptoolpan.h"

 #include "qgsmapcanvas.h"

 #include "qgscursors.h"

+#include "qgsmaptopixel.h"

 #include <QBitmap>

 #include <QCursor>

 #include <QMouseEvent>

@@ -34,8 +35,12 @@

 void QgsMapToolPan::canvasMoveEvent( QMouseEvent * e )

 {

-  if ( mDragging && ( e->buttons() & Qt::LeftButton ) )

+  if ( ( e->buttons() & Qt::LeftButton ) )

   {

+    if ( !mDragging )

+    {

+      mDragging = true;

+    }

     // move map and other canvas items

     mCanvas->panAction( e );

   }

@@ -46,16 +51,25 @@

 {

   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();

+    }

   }

 }