Use zoom to mouse by default. Fixes #5054

Author: NathanW2

src/app/qgisapp.cpp

@@ -1719,7 +1719,7 @@ void QgisApp::createOverview()
   mMapCanvas->enableAntiAliasing( mySettings.value( "/qgis/enable_anti_aliasing", true ).toBool() );
   mMapCanvas->useImageToRender( mySettings.value( "/qgis/use_qimage_to_render", true ).toBool() );
 
-  int action = mySettings.value( "/qgis/wheel_action", 0 ).toInt();
+  int action = mySettings.value( "/qgis/wheel_action", 2 ).toInt();
   double zoomFactor = mySettings.value( "/qgis/zoom_factor", 2 ).toDouble();
   mMapCanvas->setWheelAction(( QgsMapCanvas::WheelAction ) action, zoomFactor );
 }
@@ -4877,7 +4877,7 @@ void QgisApp::options()
     mMapCanvas->enableAntiAliasing( mySettings.value( "/qgis/enable_anti_aliasing" ).toBool() );
     mMapCanvas->useImageToRender( mySettings.value( "/qgis/use_qimage_to_render" ).toBool() );
 
-    int action = mySettings.value( "/qgis/wheel_action", 0 ).toInt();
+    int action = mySettings.value( "/qgis/wheel_action", 2 ).toInt();
     double zoomFactor = mySettings.value( "/qgis/zoom_factor", 2 ).toDouble();
     mMapCanvas->setWheelAction(( QgsMapCanvas::WheelAction ) action, zoomFactor );
 

src/app/qgsoptions.cpp

@@ -339,7 +339,7 @@ QgsOptions::QgsOptions( QWidget *parent, Qt::WFlags fl ) :
   chbAskToSaveProjectChanges->setChecked( settings.value( "qgis/askToSaveProjectChanges", QVariant( true ) ).toBool() );
   chbWarnOldProjectVersion->setChecked( settings.value( "/qgis/warnOldProjectVersion", QVariant( true ) ).toBool() );
 
-  cmbWheelAction->setCurrentIndex( settings.value( "/qgis/wheel_action", 0 ).toInt() );
+  cmbWheelAction->setCurrentIndex( settings.value( "/qgis/wheel_action", 2 ).toInt() );
   spinZoomFactor->setValue( settings.value( "/qgis/zoom_factor", 2 ).toDouble() );
 
   //

src/core/composer/qgscomposermap.cpp

@@ -431,7 +431,7 @@ void QgsComposerMap::zoomContent( int delta, double x, double y )
 
   //read zoom mode
   //0: zoom, 1: zoom and recenter, 2: zoom to cursor, 3: nothing
-  int zoomMode = settings.value( "/qgis/wheel_action", 0 ).toInt();
+  int zoomMode = settings.value( "/qgis/wheel_action", 2 ).toInt();
   if ( zoomMode == 3 ) //do nothing
   {
     return;

src/plugins/georeferencer/qgsgeorefplugingui.cpp

@@ -921,7 +921,7 @@ void QgsGeorefPluginGui::createMapCanvas()
            this, SLOT( releasePoint( const QPoint & ) ) );
 
   QSettings s;
-  int action = s.value( "/qgis/wheel_action", 0 ).toInt();
+  int action = s.value( "/qgis/wheel_action", 2 ).toInt();
   double zoomFactor = s.value( "/qgis/zoom_factor", 2 ).toDouble();
   mCanvas->setWheelAction(( QgsMapCanvas::WheelAction ) action, zoomFactor );