Integrate TranslateCanvasCmd into Application

src/Application/States/TextureMappingState.cpp

@@ -90,6 +90,7 @@ void TextureMappingState::onBackgroundPressed(Application * app, GuiBackgroundEv
 
 void TextureMappingState::onMousePressed(Application * app, ofMouseEventArgs & args){
 	_clickPosition = ofPoint(args.x, args.y);
+	_prevCanvasTranslate = _canvasTranslate;
 
 	// Alter mouse event args to match canvas translation
 	args.x -= _canvasTranslate.x;
@@ -100,6 +101,15 @@ void TextureMappingState::onMousePressed(Application * app, ofMouseEventArgs & a
 void TextureMappingState::onMouseReleased(Application * app, ofMouseEventArgs & args){
 	_bTranslateCanvas = false;
 	
+	// If translation has happened, create an undoable command
+	if(_prevCanvasTranslate != _canvasTranslate){
+		app->getCmdManager()->exec(
+			new TranslateCanvasCmd(
+				app,
+				_prevCanvasTranslate,
+				_canvasTranslate));
+	}
+	
 	_clickCanvasTranslate = _canvasTranslate;
 	
 	// Alter mouse event args to match canvas translation

src/Application/States/TextureMappingState.h

@@ -10,6 +10,7 @@
 #include "SetNextSourceCmd.h"
 #include "SelNextSurfaceCmd.h"
 #include "ToggleAnimatedSourceCmd.h"
+#include "TranslateCanvasCmd.h"
 #include "Gui.h"
 
 namespace ofx {
@@ -40,6 +41,7 @@ class TextureMappingState : public ApplicationBaseState {
 	
 		ofPoint _clickPosition;
 		ofPoint _canvasTranslate;
+		ofPoint _prevCanvasTranslate; // Canvas translate before TranslateCanvasCmd command exec
 		ofPoint _clickCanvasTranslate;
 
 };