From 398da86acfa67c67ae65201f67393b5375aabc71 Mon Sep 17 00:00:00 2001
From: Theodoros Papatheodorou <theo@randomquark.com>
Date: Sun, 3 Dec 2017 11:33:40 +0000
Subject: [PATCH] added virtual function reset() in baseSource that can be
 overridden in Source classes to reset source variables on re-entry, if needed

---
 src/Sources/BaseSource.h        | 2 ++
 src/Surfaces/SurfaceManager.cpp | 4 ++++
 2 files changed, 6 insertions(+)

diff --git a/src/Sources/BaseSource.h b/src/Sources/BaseSource.h
index c034739..c097359 100644
--- a/src/Sources/BaseSource.h
+++ b/src/Sources/BaseSource.h
@@ -21,6 +21,8 @@ class BaseSource {
 		virtual void clear(){}
         virtual void togglePause(){}
 
+        virtual void reset(){} // called by surfaceManager to optionally allow users to reset a source's variables
+
 		// TODO: add virtual increaseReferenceCount and decreaseReferenceCount methods
 		// and make the variable protected
 		int referenceCount;
diff --git a/src/Surfaces/SurfaceManager.cpp b/src/Surfaces/SurfaceManager.cpp
index 279ee11..b805b48 100644
--- a/src/Surfaces/SurfaceManager.cpp
+++ b/src/Surfaces/SurfaceManager.cpp
@@ -461,6 +461,10 @@ void SurfaceManager::setPreset(unsigned int i){
 	}
 	
 	_activePresetIndex = i;
+
+    for (int i=0; i<_presets[_activePresetIndex]->getSurfaces().size(); i++){
+        _presets[_activePresetIndex]->getSurfaces()[i]->getSource()->reset();
+    }
 }
 
 void SurfaceManager::cloneActivePreset(){