gimp_cmyk_set ()

void
gimp_cmyk_set (GimpCMYK *cmyk,
               gdouble cyan,
               gdouble magenta,
               gdouble yellow,
               gdouble black);

Very basic initialiser for the internal GimpCMYK structure. Channel values are doubles in the range 0 to 1.

gimp_cmyk_set_uchar ()

void
gimp_cmyk_set_uchar (GimpCMYK *cmyk,
                     guchar cyan,
                     guchar magenta,
                     guchar yellow,
                     guchar black);

The same as gimp_cmyk_set(), except that channel values are unsigned chars in the range 0 to 255.

gimp_cmyk_get_uchar ()

void
gimp_cmyk_get_uchar (const GimpCMYK *cmyk,
                     guchar *cyan,
                     guchar *magenta,
                     guchar *yellow,
                     guchar *black);

Retrieve individual channel values from a GimpCMYK structure. Channel values are pointers to unsigned chars in the range 0 to 255.

gimp_cmyka_set ()

void
gimp_cmyka_set (GimpCMYK *cmyka,
                gdouble cyan,
                gdouble magenta,
                gdouble yellow,
                gdouble black,
                gdouble alpha);

Initialiser for the internal GimpCMYK structure. Channel values are doubles in the range 0 to 1.

gimp_cmyka_set_uchar ()

void
gimp_cmyka_set_uchar (GimpCMYK *cmyka,
                      guchar cyan,
                      guchar magenta,
                      guchar yellow,
                      guchar black,
                      guchar alpha);

The same as gimp_cmyka_set(), except that channel values are unsigned chars in the range 0 to 255.

gimp_cmyka_get_uchar ()

void
gimp_cmyka_get_uchar (const GimpCMYK *cmyka,
                      guchar *cyan,
                      guchar *magenta,
                      guchar *yellow,
                      guchar *black,
                      guchar *alpha);

Retrieve individual channel values from a GimpCMYK structure. Channel values are pointers to unsigned chars in the range 0 to 255.

struct GimpCMYK

struct GimpCMYK {
  gdouble c, m, y, k, a;
};

Used to keep CMYK and CMYKA colors. All components are in a range of [0.0..1.0]. An alpha value is somewhat useless in the CMYK colorspace, but we keep one around anyway so color conversions going to CMYK and back can preserve alpha.

GIMP_TYPE_CMYK

#define GIMP_TYPE_CMYK       (gimp_cmyk_get_type ())