#ifndef __CGM_H
#define __CGM_H


#define COORD_UNDEFINED	0x80000000

typedef struct {
  short x, y;
} GPoint;

typedef struct {
  unsigned short red, green, blue;
} GColor;


enum cgm_context {
  CGM_BACKGROUND, CGM_FOREGROUND, CGM_XOR, CGM_LINE, CGM_EDGE, CGM_FILL,
  CGM_TEXT, CGM_SYMBOL, CGM_MARKER, CGM_ENDCONTEXTS};

struct location {
  unsigned int	chn_number,
                pic_number;
  int		x1,
		y1,
		x2,
		y2;
  int marked;
};

typedef struct location location;
typedef char *(*GetChannelLabelProc) (location *loc);
typedef void (*YourRepaintProcInt) (... /* anat_dia *diagram */);

struct cgm_gpe {
  int		 type;		/* graphical primitve element type */
  long		 arg_len;	/* length of argument */
  void		 *arg;		/* ptr to arguments */
  struct cgm_gpe *next_gpe;	/* ptr to graphical primitive element */
};

struct cgm_picture {
  char	             *name;
  int		     min_x,		/* values of VDC EXTENT */
		     min_y,
		     max_x,
		     max_y;
  int                background;
  GColor             *cgm_color;
  struct cgm_gpe     *first_gpe;	/* ptr to graphical primitve element */
  struct cgm_picture *next_picture;
  int                ncgm_colors;
};

struct anat_dia {
  char		*name;
  int		version;

  struct cgm_picture *first_picture;
  struct cgm_picture *pic;		/* ptr to current picture */
  int npictures;
  int actpic;

  int           cgm_linecolor,
                cgm_edgecolor,
                cgm_fillcolor,
                cgm_markercolor,
                cgm_textcolor,
                cgm_symbolcolor,
                cgm_backgroundcolor;

  int           monochrome;

  int           width, height;
  int           xoffset, yoffset;
  float         factor;

  char          *content;
  unsigned int  content_length;

  int           background;

  struct location *location;
  int nlocations;

  int actlocation;

  GetChannelLabelProc labelproc;

  int paint_channel_dot;

  YourRepaintProcInt repproc; /* called after drawing of anat. dia. */

  void *aux_info; /* arbitrary information */
};


typedef struct anat_dia anat_dia;
typedef struct cgm_picture cgm_picture;
typedef struct cgm_gpe cgm_gpe;

extern void init_anat_dia_int (anat_dia *diagram, int paint_channel_dot,
			       GetChannelLabelProc labelproc, 
			       YourRepaintProcInt repproc);
extern void delete_anat_dia_int (anat_dia *diagram);

extern void set_width_height (anat_dia *diagram, int width, int height);

extern void read_cgm_metafile (char *ptr, unsigned long length,
			       anat_dia *anat_dia);
extern void delete_cgm_metafile (anat_dia *diagram);
extern void repaint_anat_dia (anat_dia *diagram);

extern void set_anat_dia_picture (int no, anat_dia *diagram);
extern void set_anat_dia_background (int color, anat_dia *diagram);

extern int vdc2x_x (int x, anat_dia *diagram);
extern int vdc2x_y (int x, anat_dia *diagram);
extern int x2vdc_x (int x, anat_dia *diagram);
extern int x2vdc_y (int x, anat_dia *diagram);
extern int in_subwindow_vdc (int x, int y, anat_dia *diagram);
extern int in_subwindow_x (int x, int y, anat_dia *diagram);

extern char *get_anat_dia_picture_name (anat_dia *diagram);
extern int get_anat_dia_npictures (anat_dia *diagram);
extern void get_cgm_metafile (void **pptr, unsigned long *len,
			      anat_dia *anat_dia);


extern void read_channel_locations (void *ptr, unsigned long length,
				    int nchans, anat_dia *diagram);
extern void get_channel_locations (location **loc, unsigned long *no,
				   anat_dia *diagram);
extern void delete_channel_locations (anat_dia *diagram);

extern void unmark_channel_locations (anat_dia *diagram);
extern void delete_marked_locations (anat_dia *diagram);
extern void mark_locations_within_x (int x1, int y1, int x2, int y2, 
				       anat_dia *diagram);
extern void mark_unmark_locations_around_x (int x, int y, anat_dia *diagram);
extern void append_locations (location *loc_new, int no, anat_dia *diagram);

extern void draw_location (location *location, anat_dia *diagram);

extern location *get_first_marked (anat_dia *diagram);
extern location *get_next_marked (anat_dia *diagram);

extern int around_marked (int x, int y, anat_dia *diagram);
extern void draw_box (int x1, int y1, int x2, int y2, anat_dia *diagram);

#endif