colors.h

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#ifndef GRASS_COLORS_H
#define GRASS_COLORS_H
 
/* Don't add more colors here.
   These colors are the preallocated colors used in displays for efficiency.
   Adding colors here reduces the number of colors it is possible for a user to
   display. If support for named colors is needed it should go in
   G_str_to_color. */
 
#define BLACK               1
#define RED                 2
#define GREEN               3
#define BLUE                4
#define YELLOW              5
#define CYAN                6
#define MAGENTA             7
#define WHITE               8
#define GRAY                9
#define ORANGE              10
#define AQUA                11
#define INDIGO              12
#define VIOLET              13
#define BROWN               14
 
#define GREY                GRAY
#define PURPLE              VIOLET
 
#define COLOR_STRING_LENGTH 30
 
/* These can be in any order. They must match the lookup strings in the table
 * below. */
#define D_COLOR_LIST                                                     \
    "red,orange,yellow,green,blue,indigo,violet,white,black,gray,brown," \
    "magenta,aqua,grey,cyan,purple"
 
/* max length of color string */
#define MAX_COLOR_LEN 32
 
struct color_rgb {
    unsigned char r, g, b;
};
 
struct color_name {
    const char *name;
    int number;
};
 
/*!
   \typedef ColorFormat
   \brief  Color format identifiers (enum)
 
   Identifiers of all recognized color formats.
 
 */
typedef enum { RGB, HEX, HSV, TRIPLET } ColorFormat;
 
#include <grass/defs/colors.h>
 
#endif