1 files changed, 15 insertions, 2 deletions
diff --git a/engines/xeen/screen.h b/engines/xeen/screen.h
index 94dce60de9..491b702ded 100644
--- a/engines/xeen/screen.h
+++ b/engines/xeen/screen.h
@@ -25,19 +25,32 @@
 
 #include "common/scummsys.h"
 #include "common/system.h"
-#include "graphics/surface.h"
+#include "common/array.h"
+#include "common/rect.h"
+#include "xeen/xsurface.h"
 
 namespace Xeen {
 
 class XeenEngine;
 
-class Screen: public Graphics::Surface {
+class Screen: public XSurface {
 private:
 	XeenEngine *_vm;
+	Common::List<Common::Rect> _dirtyRects;
+
+	void mergeDirtyRects();
+
+	bool unionRectangle(Common::Rect &destRect, const Common::Rect &src1, const Common::Rect &src2);
+public:
+	virtual void transBlitFrom(const XSurface &src, const Common::Point &destPos);
+
+	virtual void blitFrom(const XSurface &src, const Common::Point &destPos);
 public:
 	Screen(XeenEngine *vm);
 
 	void update();
+
+	void addDirtyRect(const Common::Rect &r);
 };
 
 } // End of namespace Xeen