gimp/libgimpcolor/gimpcmyk.c

131 lines
3.3 KiB
C

/* LIBGIMP - The GIMP Library
* Copyright (C) 1995-1997 Peter Mattis and Spencer Kimball
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include "config.h"
#include <glib.h>
#include "libgimpmath/gimpmath.h"
#include "gimpcolortypes.h"
#include "gimpcmyk.h"
/* CMYK functions */
void
gimp_cmyk_set (GimpCMYK *cmyk,
gdouble c,
gdouble m,
gdouble y,
gdouble k)
{
g_return_if_fail (cmyk != NULL);
cmyk->c = c;
cmyk->m = m;
cmyk->y = y;
cmyk->k = k;
}
void
gimp_cmyk_set_uchar (GimpCMYK *cmyk,
guchar c,
guchar m,
guchar y,
guchar k)
{
g_return_if_fail (cmyk != NULL);
cmyk->c = (gdouble) c / 255.0;
cmyk->m = (gdouble) m / 255.0;
cmyk->y = (gdouble) y / 255.0;
cmyk->k = (gdouble) k / 255.0;
}
void
gimp_cmyk_get_uchar (const GimpCMYK *cmyk,
guchar *c,
guchar *m,
guchar *y,
guchar *k)
{
g_return_if_fail (cmyk != NULL);
if (c) *c = ROUND (CLAMP (cmyk->c, 0.0, 1.0) * 255.0);
if (m) *m = ROUND (CLAMP (cmyk->m, 0.0, 1.0) * 255.0);
if (y) *y = ROUND (CLAMP (cmyk->y, 0.0, 1.0) * 255.0);
if (k) *k = ROUND (CLAMP (cmyk->k, 0.0, 1.0) * 255.0);
}
/* CMYKA functions */
void
gimp_cmyka_set (GimpCMYK *cmyka,
gdouble c,
gdouble m,
gdouble y,
gdouble k,
gdouble a)
{
g_return_if_fail (cmyka != NULL);
cmyka->c = c;
cmyka->m = m;
cmyka->y = y;
cmyka->k = k;
cmyka->a = a;
}
void
gimp_cmyka_set_uchar (GimpCMYK *cmyka,
guchar c,
guchar m,
guchar y,
guchar k,
guchar a)
{
g_return_if_fail (cmyka != NULL);
cmyka->c = (gdouble) c / 255.0;
cmyka->m = (gdouble) m / 255.0;
cmyka->y = (gdouble) y / 255.0;
cmyka->k = (gdouble) k / 255.0;
cmyka->a = (gdouble) a / 255.0;
}
void
gimp_cmyka_get_uchar (const GimpCMYK *cmyka,
guchar *c,
guchar *m,
guchar *y,
guchar *k,
guchar *a)
{
g_return_if_fail (cmyka != NULL);
if (c) *c = ROUND (CLAMP (cmyka->c, 0.0, 1.0) * 255.0);
if (m) *m = ROUND (CLAMP (cmyka->m, 0.0, 1.0) * 255.0);
if (y) *y = ROUND (CLAMP (cmyka->y, 0.0, 1.0) * 255.0);
if (k) *k = ROUND (CLAMP (cmyka->k, 0.0, 1.0) * 255.0);
if (a) *a = ROUND (CLAMP (cmyka->a, 0.0, 1.0) * 255.0);
}