added ability to select a source by string name. Basically accessor functions to the SetSourceCmd class

src/Application/Application.cpp

@@ -463,6 +463,19 @@ void Application::setNextSource(){
 	}
 }
 
+void Application::setFboSource(string sourceId){
+	if(getSurfaceManager()->getSelectedSurface() != 0){
+		getCmdManager()->exec(
+		 new SetSourceCmd(
+			SourceType::SOURCE_TYPE_FBO,
+			sourceId,
+		  getSurfaceManager()->getSelectedSurface(),
+		  &Gui::instance()->getSourcesEditorWidget()));
+	}else{
+		getCmdManager()->exec(new SelNextSurfaceCmd(getSurfaceManager()));
+	}
+}
+
 void Application::addGridRow(){
 	if(getSurfaceManager()->getSelectedSurface() != 0){
 		if(getSurfaceManager()->getSelectedSurface()->getType() ==

src/Application/Application.h

@@ -125,6 +125,7 @@ class Application {
 		void scaleDown();
 		void duplicateSurface();
 		void setNextSource();
+		void setFboSource(string sourceId);
 		void addGridRow();
 		void addGridColumn();
 		void removeGridRow();

src/ofxPiMapper.cpp

@@ -166,6 +166,10 @@ void ofxPiMapper::setNextSource(){
 	_application.setNextSource();
 }
 
+void ofxPiMapper::setFboSource(string sourceId){
+	_application.setFboSource(sourceId);
+}
+
 void ofxPiMapper::reboot(){
 	_application.reboot();
 }

src/ofxPiMapper.h

@@ -72,6 +72,7 @@ class ofxPiMapper {
 
 		// Sources, selected surface
 		void setNextSource();
+		void setFboSource(string sourceId);
 
 		// System commands
 		void reboot();