#include <stdio.h>
#include <pixman.h>
#include "list.h"

#ifndef FALSE
#define FALSE 0
#endif

#ifndef TRUE
#define TRUE 1
#endif

typedef enum
{
    WS_WINDOW_SIZE_CHANGED = (1 << 0),
    WS_WINDOW_POSITION_CHANGED = (1 << 1)
} ws_window_configure_type_t;

typedef struct ws_t ws_t;
typedef struct drawable_t drawable_t;
typedef struct window_t window_t;
typedef struct surfade_t surface_t;
typedef union ws_event_t ws_event_t;

typedef enum
{
    WS_CONFIGURE, // FIXME: rename to USER_POSITION?
    WS_MOTION,
    WS_BUTTON_DOWN,
    WS_BUTTON_UP
} ws_event_type_t;

typedef struct
{
    link_t	    link;
    ws_event_type_t type;
} ws_event_common_t;

union ws_event_t
{
    ws_event_common_t	common;

    struct
    {
	ws_event_common_t		common;
	ws_window_configure_type_t	configure_type;
	window_t *			window;
    } configure;

    struct
    {
	ws_event_common_t		common;
	window_t *			window;
	int				x;
	int				y;
	int				root_x;
	int				root_y;
    } motion;

    struct
    {
	ws_event_common_t		common;
	window_t *			window;
	int				button;
	int				x;
	int				y;
	int				root_x;
	int				root_y;
    } button, button_up, button_down;
};

typedef void (* ws_event_func_t) (window_t *window, ws_event_t *event, void *data);

/* Window system */
ws_t *	ws_open (void);
int	ws_get_width (ws_t *ws);
int	ws_get_height (ws_t *ws);
int	ws_get_fd (ws_t *ws);
void	ws_process (ws_t *ws);
pixman_bool_t ws_pending (ws_t *ws);

/* Window */
window_t *ws_create_window          (ws_t           *ws,
				     int             x,
				     int             y,
				     int             width,
				     int             height);
void	  ws_window_set_callback    (window_t       *window,
				     ws_event_func_t func,
				     void *          data);
void      ws_window_ref		    (window_t	    *window);
void	  ws_window_unref	    (window_t	    *window);
void      ws_window_show            (window_t       *window);
void      ws_window_hide            (window_t       *window);
void      ws_window_move            (window_t       *window,
				     int             x,
				     int             y);
int	  ws_window_get_width       (window_t       *window);
int       ws_window_get_height	    (window_t       *window);
int	  ws_window_get_x	    (window_t	    *window);
int	  ws_window_get_y	    (window_t	    *window);

void      ws_window_resize          (window_t       *window,
				     int             w,
				     int             h);
void      ws_window_copy_area       (window_t       *window,
				     int             src_x,
				     int             src_y,
				     int             dst_x,
				     int             dst_y,
				     int             width,
				     int             height);
void      ws_window_copy_from_image (window_t       *window,
				     pixman_image_t *image,
				     int             image_x,
				     int             image_y,
				     int             win_x,
				     int             win_y,
				     int             width,
				     int             height);
void	  ws_window_copy_to_image   (window_t       *window,
				     pixman_image_t *image,
				     int	     image_x,
				     int	     image_y,
				     int	     win_x,
				     int	     win_y,
				     int	     width,
				     int	     height);

void	  ws_window_finish	    (window_t      **windows,
				     int	     n_windows);