nuclear@0: #ifndef SCR_OVERLAY_H_
nuclear@0: #define SCR_OVERLAY_H_
nuclear@0: 
nuclear@0: #include "screen.h"
nuclear@0: 
nuclear@0: // abstract base class for overlay screens
nuclear@0: class OverlayScreen : public Screen {
nuclear@0: protected:
nuclear@0: 	Screen *prev;
nuclear@0: 
nuclear@0: public:
nuclear@0: 	virtual void start();
nuclear@0: 	virtual void stop();
nuclear@0: 
nuclear@0: 	virtual long redisplay_interval() const;
nuclear@0: 
nuclear@0: 	virtual void pre_draw() const;
nuclear@0: 	virtual void display() const;
nuclear@0: 	virtual void post_draw() const;
nuclear@0: 
nuclear@0: 	virtual void keyboard(int key, bool pressed);
nuclear@0: 	virtual void motion(int x, int y, bool pressed);
nuclear@0: 	virtual void button(int bn, bool pressed, int x, int y);
nuclear@0: 	virtual void reshape(int x, int y);
nuclear@0: };
nuclear@0: 
nuclear@0: #endif	// SCR_OVERLAY_H_