Allow a 0 pointer for the vector layer in QgsRubberBand::setToGeometry

git-svn-id: http://svn.osgeo.org/qgis/trunk/qgis@9623 c8812cc2-4d05-0410-92ff-de0c093fc19c

Author: mhugent

python/gui/qgsrubberband.sip

@@ -29,9 +29,10 @@ class QgsRubberBand: QgsMapCanvasItem
     /**Sets this rubber band to the geometry of an existing feature.
      This is usefull for feature highlighting.
     @param geom the geometry object
-    @param layer the layer containing the feature (used for coord transformation)
+    @param layer the layer containing the feature, used for coord transformation to map 
+    crs. In case of 0 pointer, the coordinates are not going to be transformed.
     @param render the maprender object (used for coord transformation)*/
-    void setToGeometry(QgsGeometry* geom, QgsVectorLayer& layer);
+    void setToGeometry(QgsGeometry* geom, QgsVectorLayer* layer);
 
     /**Adds translation to original coordinates (all in map coordinates)*/
     void setTranslationOffset(double dx, double dy);

src/app/qgsmaptoolidentify.cpp

@@ -465,7 +465,7 @@ void QgsMapToolIdentify::highlightFeature( int featureId )
 
   if ( mRubberBand )
   {
-    mRubberBand->setToGeometry( feat.geometry(), *layer );
+    mRubberBand->setToGeometry( feat.geometry(), layer );
     mRubberBand->setWidth( 2 );
     mRubberBand->setColor( Qt::red );
     mRubberBand->show();

src/app/qgsmaptoolmovefeature.cpp

@@ -109,7 +109,7 @@ void QgsMapToolMoveFeature::canvasPressEvent( QMouseEvent * e )
   mStartPointMapCoords = toMapCoordinates( e->pos() );
   mMovedFeature = cf.id(); //todo: take the closest feature, not the first one...
   mRubberBand = createRubberBand();
-  mRubberBand->setToGeometry( cf.geometry(), *vlayer );
+  mRubberBand->setToGeometry( cf.geometry(), vlayer );
   mRubberBand->setColor( Qt::red );
   mRubberBand->setWidth( 2 );
   mRubberBand->show();

src/gui/qgsrubberband.cpp

@@ -153,7 +153,7 @@ void QgsRubberBand::movePoint( int index, const QgsPoint& p, int geometryIndex )
   update();
 }
 
-void QgsRubberBand::setToGeometry( QgsGeometry* geom, QgsVectorLayer& layer )
+void QgsRubberBand::setToGeometry( QgsGeometry* geom, QgsVectorLayer* layer )
 {
   if ( !geom )
   {
@@ -177,7 +177,15 @@ void QgsRubberBand::setToGeometry( QgsGeometry* geom, QgsVectorLayer& layer )
     {
       mIsPolygon = true;
       double d = mMapCanvas->extent().width() * 0.005;
-      QgsPoint pt = mr->layerToMapCoordinates( &layer, geom->asPoint() );
+      QgsPoint pt;
+      if(layer)
+	{
+	  pt = mr->layerToMapCoordinates( layer, geom->asPoint() );
+	}
+      else
+	{
+	  pt = geom->asPoint();
+	}
       addPoint( QgsPoint( pt.x() - d, pt.y() - d ) );
       addPoint( QgsPoint( pt.x() + d, pt.y() - d ) );
       addPoint( QgsPoint( pt.x() + d, pt.y() + d ) );
@@ -194,10 +202,20 @@ void QgsRubberBand::setToGeometry( QgsGeometry* geom, QgsVectorLayer& layer )
       for ( int i = 0; i < mpt.size(); ++i )
       {
         QgsPoint pt = mpt[i];
-        addPoint( mr->layerToMapCoordinates( &layer, QgsPoint( pt.x() - d, pt.y() - d ) ) );
-        addPoint( mr->layerToMapCoordinates( &layer, QgsPoint( pt.x() + d, pt.y() - d ) ) );
-        addPoint( mr->layerToMapCoordinates( &layer, QgsPoint( pt.x() + d, pt.y() + d ) ) );
-        addPoint( mr->layerToMapCoordinates( &layer, QgsPoint( pt.x() - d, pt.y() + d ) ) );
+	if(layer)
+	  {
+	    addPoint( mr->layerToMapCoordinates( layer, QgsPoint( pt.x() - d, pt.y() - d ) ) );
+	    addPoint( mr->layerToMapCoordinates( layer, QgsPoint( pt.x() + d, pt.y() - d ) ) );
+	    addPoint( mr->layerToMapCoordinates( layer, QgsPoint( pt.x() + d, pt.y() + d ) ) );
+	    addPoint( mr->layerToMapCoordinates( layer, QgsPoint( pt.x() - d, pt.y() + d ) ) );
+	  }
+	else
+	  {
+	    addPoint(QgsPoint( pt.x() - d, pt.y() - d ) );
+	    addPoint(QgsPoint( pt.x() + d, pt.y() - d ) );
+	    addPoint(QgsPoint( pt.x() + d, pt.y() + d ) );
+	    addPoint(QgsPoint( pt.x() - d, pt.y() + d ) );
+	  }
       }
     }
     break;
@@ -209,7 +227,14 @@ void QgsRubberBand::setToGeometry( QgsGeometry* geom, QgsVectorLayer& layer )
       QgsPolyline line = geom->asPolyline();
       for ( int i = 0; i < line.count(); i++ )
       {
-        addPoint( mr->layerToMapCoordinates( &layer, line[i] ) );
+	if(layer)
+	  {
+	    addPoint( mr->layerToMapCoordinates( layer, line[i] ) );
+	  }
+	else
+	  {
+	    addPoint(line[i]);
+	  }
       }
     }
     break;
@@ -228,7 +253,14 @@ void QgsRubberBand::setToGeometry( QgsGeometry* geom, QgsVectorLayer& layer )
         QgsPolyline line = mline[i];
         for ( int j = 0; j < line.size(); ++j )
         {
-          addPoint( mr->layerToMapCoordinates( &layer, line[j] ), false, i );
+	  if(layer)
+	    {
+	      addPoint( mr->layerToMapCoordinates( layer, line[j] ), false, i );
+	    }
+	  else
+	    {
+	      addPoint(line[j]);
+	    }
         }
       }
     }
@@ -242,7 +274,14 @@ void QgsRubberBand::setToGeometry( QgsGeometry* geom, QgsVectorLayer& layer )
       QgsPolyline line = poly[0];
       for ( int i = 0; i < line.count(); i++ )
       {
-        addPoint( mr->layerToMapCoordinates( &layer, line[i] ) );
+	if(layer)
+	  {
+	    addPoint( mr->layerToMapCoordinates( layer, line[i] ) );
+	  }
+	else
+	  {
+	    addPoint(line[i]);
+	  }
       }
     }
     break;
@@ -262,7 +301,14 @@ void QgsRubberBand::setToGeometry( QgsGeometry* geom, QgsVectorLayer& layer )
         QgsPolyline line = poly[0];
         for ( int j = 0; j < line.count(); ++j )
         {
-          addPoint( mr->layerToMapCoordinates( &layer, line[j] ), false, i );
+	  if(layer)
+	    {
+	      addPoint( mr->layerToMapCoordinates( layer, line[j] ), false, i );
+	    }
+	  else
+	    {
+	      addPoint(line[j]);
+	    }
         }
       }
     }

src/gui/qgsrubberband.h

@@ -56,9 +56,10 @@ class GUI_EXPORT QgsRubberBand: public QgsMapCanvasItem
     /**Sets this rubber band to the geometry of an existing feature.
      This is usefull for feature highlighting.
     @param geom the geometry object
-    @param layer the layer containing the feature (used for coord transformation)
+    @param layer the layer containing the feature, used for coord transformation to map 
+    crs. In case of 0 pointer, the coordinates are not going to be transformed.
     @param render the maprender object (used for coord transformation)*/
-    void setToGeometry( QgsGeometry* geom, QgsVectorLayer& layer );
+    void setToGeometry( QgsGeometry* geom, QgsVectorLayer* layer );
 
     /**Adds translation to original coordinates (all in map coordinates)*/
     void setTranslationOffset( double dx, double dy );