Add eraseActivePreset()

src/Surfaces/SurfaceManager.cpp

@@ -444,5 +444,24 @@ void SurfaceManager::cloneActivePreset(){
 	_activePresetIndex = _presets.size() - 1;
 }
 
+void SurfaceManager::eraseActivePreset(){
+	if(_presets.size() <= 0){
+		return;
+	}
+	
+	_presets[_activePresetIndex]->clear();
+	_presets.erase(_presets.begin() + _activePresetIndex);
+	
+	_activePresetIndex--;
+	
+	if(_presets.size() > 0 && _activePresetIndex < 0){
+		_activePresetIndex = 0;
+	}
+	
+	if(_activePresetIndex < 0){
+		createPreset();
+	}
+}
+
 } // namespace piMapper
 } // namespace ofx

src/Surfaces/SurfaceManager.h

@@ -73,6 +73,7 @@ class SurfaceManager {
 		void setNextPreset();
 		void setActivePreset(unsigned int i);
 		void cloneActivePreset();
+		void eraseActivePreset();
 	
 	private:
 		BaseSurface * selectedSurface;

src/ofxPiMapper.cpp

@@ -36,6 +36,11 @@ void ofxPiMapper::cloneActivePreset(){
 	_application.getSurfaceManager()->cloneActivePreset();
 }
 
+void ofxPiMapper::eraseActivePreset(){
+	_application.getSurfaceManager()->deselectSurface();
+	_application.getSurfaceManager()->eraseActivePreset();
+}
+
 bool ofxPiMapper::loadXmlSettings(string fileName){
 	return _application.loadXmlSettings(fileName);
 }

src/ofxPiMapper.h

@@ -41,6 +41,7 @@ class ofxPiMapper {
 		void setActivePreset(unsigned int i);
 		void setNextPreset();
 		void cloneActivePreset();
+		void eraseActivePreset();
 
 		bool loadXmlSettings(string fileName);