fix python plugin crashes - changes GUI API

- QgsMapCanvas::xyCoordinates(QgsPoint & p) => xyCoordinates(const QgsPoint & p)
- QgsMapToolEmitPoint::canvasClicked(QgsPoint& point, Qt::MouseButton button) => canvasClicked( const QgsPoint& point, Qt::MouseButton button)
- might be a SIP 4.8 problem



git-svn-id: http://svn.osgeo.org/qgis/trunk@11540 c8812cc2-4d05-0410-92ff-de0c093fc19c

python/gui/qgsmapcanvas.sip

@@ -224,8 +224,10 @@ class QgsMapCanvas : QGraphicsView
   signals:
     /** Let the owner know how far we are with render operations */
     void setProgress(int,int);
-    /** emits current mouse position */
-    void xyCoordinates(QgsPoint & p);
+
+    /** emits current mouse position
+      \note changed in 1.3 */
+    void xyCoordinates(const QgsPoint &p);
 
     //! Emitted when the scale of the map changes
     void scaleChanged(QString);

python/gui/qgsmaptoolemitpoint.sip

@@ -19,7 +19,7 @@ class QgsMapToolEmitPoint : QgsMapTool
     virtual void canvasReleaseEvent(QMouseEvent * e);
 
   signals:
-
     //! signal emitted on canvas click
-    void canvasClicked(QgsPoint& point, Qt::MouseButton button);
+    // \note changed in 1.3
+    void canvasClicked( const QgsPoint &point, Qt::MouseButton button);
 };

src/app/qgisapp.cpp

@@ -1680,7 +1680,7 @@ void QgisApp::setupConnections()
            mMapTools.mNodeTool, SLOT( currentLayerChanged( QgsMapLayer* ) ) );
 
   //signal when mouse moved over window (coords display in status bar)
-  connect( mMapCanvas, SIGNAL( xyCoordinates( QgsPoint & ) ), this, SLOT( showMouseCoordinate( QgsPoint & ) ) );
+  connect( mMapCanvas, SIGNAL( xyCoordinates( const QgsPoint & ) ), this, SLOT( showMouseCoordinate( const QgsPoint & ) ) );
   connect( mMapCanvas->mapRenderer(), SIGNAL( drawingProgress( int, int ) ), this, SLOT( showProgress( int, int ) ) );
   connect( mMapCanvas->mapRenderer(), SIGNAL( hasCrsTransformEnabled( bool ) ), this, SLOT( hasCrsTransformEnabled( bool ) ) );
   connect( mMapCanvas->mapRenderer(), SIGNAL( destinationSrsChanged() ), this, SLOT( destinationSrsChanged() ) );
@@ -4641,7 +4641,7 @@ void QgisApp::toggleEditing( QgsMapLayer *layer )
   vlayer->triggerRepaint();
 }
 
-void QgisApp::showMouseCoordinate( QgsPoint & p )
+void QgisApp::showMouseCoordinate( const QgsPoint & p )
 {
   if ( mMapTipsVisible )
   {

src/app/qgisapp.h

@@ -394,7 +394,7 @@ class QgisApp : public QMainWindow
     /** toggles whether the current selected layer is in overview or not */
     void isInOverview();
     //! Slot to show the map coordinate position of the mouse cursor
-    void showMouseCoordinate( QgsPoint & );
+    void showMouseCoordinate( const QgsPoint & );
     //! Slot to show current map scale;
     void showScale( double theScale );
     //! Slot to handle user scale input;

src/gui/qgsmapcanvas.h

@@ -285,8 +285,10 @@ class GUI_EXPORT QgsMapCanvas : public QGraphicsView
   signals:
     /** Let the owner know how far we are with render operations */
     void setProgress( int, int );
-    /** emits current mouse position */
-    void xyCoordinates( QgsPoint & p );
+
+    /** emits current mouse position
+        \note changed in 1.3 */
+    void xyCoordinates( const QgsPoint & p );
 
     //! Emitted when the scale of the map changes
     void scaleChanged( double );

src/gui/qgsmaptoolemitpoint.h

@@ -47,7 +47,8 @@ class GUI_EXPORT QgsMapToolEmitPoint : public QgsMapTool
   signals:
 
     //! signal emitted on canvas click
-    void canvasClicked( QgsPoint& point, Qt::MouseButton button );
+    // \note changed in 1.3
+    void canvasClicked( const QgsPoint& point, Qt::MouseButton button );
 };
 
 #endif

src/plugins/georeferencer/mapcoordsdialog.cpp

@@ -40,8 +40,8 @@ MapCoordsDialog::MapCoordsDialog( const QgsPoint& pixelCoords, QgsMapCanvas* qgi
 
   mToolEmitPoint = new QgsMapToolEmitPoint( qgisCanvas );
   mToolEmitPoint->setButton( btnPointFromCanvas );
-  connect(( QgsMapToolEmitPoint* )mToolEmitPoint, SIGNAL( canvasClicked( QgsPoint&, Qt::MouseButton ) ),
-          this, SLOT( maybeSetXY( QgsPoint&, Qt::MouseButton ) ) );
+  connect(( QgsMapToolEmitPoint* )mToolEmitPoint, SIGNAL( canvasClicked( const QgsPoint&, Qt::MouseButton ) ),
+          this, SLOT( maybeSetXY( const QgsPoint&, Qt::MouseButton ) ) );
 
   connect( leXCoord, SIGNAL( textChanged( const QString& ) ), this, SLOT( updateOK() ) );
   connect( leYCoord, SIGNAL( textChanged( const QString& ) ), this, SLOT( updateOK() ) );
@@ -73,7 +73,7 @@ void MapCoordsDialog::on_buttonCancel_clicked()
   reject();
 }
 
-void MapCoordsDialog::maybeSetXY( QgsPoint & xy, Qt::MouseButton button )
+void MapCoordsDialog::maybeSetXY( const QgsPoint & xy, Qt::MouseButton button )
 {
   // Only LeftButton should set point
   if ( Qt::LeftButton == button )

src/plugins/georeferencer/mapcoordsdialog.h

@@ -35,7 +35,7 @@ class MapCoordsDialog : public QDialog, private Ui::MapCoordsDialogBase
 
     void on_btnPointFromCanvas_clicked();
 
-    void maybeSetXY( QgsPoint &, Qt::MouseButton );
+    void maybeSetXY( const QgsPoint &, Qt::MouseButton );
     void updateOK();
 
   private: