/****************************************************************************************
 * Name: pcmics2_gtk
 *
 * Purpose: House all of the GTK construction and callback functions
 *
 * Role: GUI
 *
 * Author: Luke Scharf (lscharf@vt.edu)
 *
 ***************************************************************************************/

/*******************************
 * Multiple Include Protection
 ******************************/
 #ifndef _PCMICS2_GTK_H_
 #define _PCMICS2_GTK_H_

/***********
 * Include
 **********/
 #include <pthread.h>


/************************
 * Forward Declarations 
 ***********************/
 #ifndef  __GDK_TYPES_H__
  typedef struct _GtkObject GtkObject;
  typedef struct _GtkWidget GtkWidget;
  typedef struct _GtkWidget GtkWidget;
  typedef struct _GdkPixmap GdkPixmap;
  typedef struct _GtkAdjustment GtkAdjustment;
  typedef struct _GdkEventConfigure GdkEventConfigure;
  typedef struct _GdkEventExpose GdkEventExpose;
  typedef struct _GdkEvent GdkEvent;
  typedef struct _gpointer gpointer;
  typedef struct _GdkGC GdkGC;
  typedef int    gint;
 #endif


/****************************************************************************************
 * Class gui
 *
 * Purpose: To encapsulte GUI construction and gtk functions
 ***************************************************************************************/
class gui
{
  //-- Graphical Elements --
  private:
	//-- Colors --
	GdkGC* gc_black;
	GdkGC* gc_white;
	GdkGC* gc_red;
	GdkGC* gc_green;
	GdkGC* gc_blue;

	//-- Widgets --
 	GtkWidget* window;
 		GtkWidget* vbox;
			GtkWidget* canvas;
				GdkPixmap* pixmap;
			GtkWidget* hbox_scrollers;
				GtkWidget* vbox_mic_dist;
					GtkWidget* mic_dist_label;
					GtkWidget* mic_dist;
						GtkObject* adj_mic_dist;
				GtkWidget* vbox_wave_len;
					GtkWidget* wave_len_label;
					GtkWidget* wave_len;
						GtkObject* adj_wave_len;
				GtkWidget* vbox_zoom;
					GtkWidget* zoom_label;
					GtkWidget* zoom;
						GtkObject* adj_zoom;
				GtkWidget* vbox_ray_scale;
					GtkWidget* ray_scale_label;
					GtkWidget* ray_scale;
						GtkObject* adj_ray_scale;
				GtkWidget* vbox_buttons;
					GtkWidget* hbox_buttons_scrollers;
 						GtkWidget* default_button;
						GtkWidget* apply_button;
 					GtkWidget* hbox_buttons_sound;
 						GtkWidget* start_button;
						GtkWidget* snap_button;
 						GtkWidget* stop_button;
 			GtkWidget* quit_button;
 

  //-- Widget Handlers --
  private:
	static gint	configure_event(GtkWidget *widget, GdkEventConfigure *event,
					gpointer data);
	static gint	expose_event(GtkWidget *widget, GdkEventExpose *event,
					gpointer data);
	static gint	delete_event(GtkWidget *widget, GdkEvent  *event,
					gpointer data);

	static void mic_dist_adj_hand(gpointer user_data);
	static void wave_len_adj_hand(gpointer user_data);
	static void ray_scale_adj_hand(gpointer user_data);
	static void zoom_adj_hand(gpointer user_data);

	static void start_button_hand(gpointer data);
	static void snapshot_button_hand(gpointer data);
	static void stop_button_hand(gpointer data);

	static void default_button_hand(gpointer data);

	static void destroy(GtkWidget *widget, gpointer data);


  //-- What will the widgets do? --
  protected:
	virtual void set_wave_len(int wave_len)=0;
	virtual void set_mic_dist(int mic_dist)=0;
	virtual void set_amp_scale(int amp_scale)=0;
	virtual void set_zoom(int zoom)=0;

	virtual void snd_snapshot()=0;
	virtual void snd_calibrate(int& wave_len, int& mic_dist)=0;
	virtual void snd_save(char* filename)=0;


  //-- Thread Support --
  private:
	pthread_t	thread_continuous;

	pthread_mutex_t	flag_running_mutex;
	bool		flag_running;

	bool		flag_continue;
	static void	continuous(void* data);

	pthread_mutex_t snd_mutex;


  //-- Application Level --
  public:
 	gui(int* argc_p, char*** argv_p);
	virtual ~gui();
 	void go();


  //-- Graphics Primitives --
  public:
 	inline void clear();				//Clear the drawing area
 	inline void commit();				//Commit changes to real screen

 	inline int height();				//Height of the drawing area
 	inline int width();				//Width of the drawing area

 	inline void text(int x, int y, char* text);	//Put text
 	inline void circle(int x, int y, int r);	//Draw a circle
 	inline void line(int x1, int y1, int x2, int y2, char c='B');//A normal line
 	inline void ray(int x1, int y1, int r2, double t2); //A line beginning at x,y and
 						//Extending for r units in
						//theta direction.
						//First pair: catesian
						//Second pair: polar
};

/*******************************
 * Multiple Include Protection
 ******************************/
#endif