/*
 *        colour.h
 *        AYM 1998-11-28
 */


#ifndef YH_COLOUR                // Prevent multiple inclusion
#define YH_COLOUR                // Prevent multiple inclusion

class rgb_c;

/* pcolour_t -- a physical colour number.
   The value of a pixel in the opinion of the output library.
   The exact size and meaning of this type vary.
   With X DirectColor visuals, it's an RGB value.
   With X PseudoColor visuals and BGI 256-colour modes,
   it's a palette index.
   With BGI 16-colour modes, it's an IRGB value. */

typedef unsigned long pcolour_t;        // X11: up to 32 BPP.
#define PCOLOUR_NONE  0xffffffff        /* An "impossible" colour no. */

pcolour_t *alloc_colours(rgb_c rgb_values[], size_t count);
void free_colours(pcolour_t * pc, size_t count);
size_t get_pcolours_count();
pcolour_t get_pcolour_pcn(size_t i);

#endif // Prevent multiple inclusions