gimp/libgimp/gimpimage.c

132 lines
3.3 KiB
C

/* LIBGIMP - The GIMP Library
* Copyright (C) 1995-2000 Peter Mattis and Spencer Kimball
*
* gimpimage.c
*
* 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
* Lesser 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 "gimp.h"
/**
* gimp_image_get_cmap:
* @image_ID: The image.
* @num_colors: Number of colors in the colormap array.
*
* Returns the image's colormap
*
* This procedure returns an actual pointer to the image's colormap, as
* well as the number of colors contained in the colormap. If the image
* is not of base type INDEXED, this pointer will be NULL.
*
* Returns: The image's colormap.
*/
guchar *
gimp_image_get_cmap (gint32 image_ID,
gint *num_colors)
{
gint num_bytes;
guchar *cmap;
cmap = _gimp_image_get_cmap (image_ID,
&num_bytes);
*num_colors = num_bytes / 3;
return cmap;
}
/**
* gimp_image_set_cmap:
* @image_ID: The image.
* @cmap: The new colormap values.
* @num_colors: Number of colors in the colormap array.
*
* Sets the entries in the image's colormap.
*
* This procedure sets the entries in the specified image's colormap.
* The number of colors is specified by the \"num_colors\" parameter
* and corresponds to the number of INT8 triples that must be contained
* in the \"cmap\" array.
*
* Returns: TRUE on success.
*/
gboolean
gimp_image_set_cmap (gint32 image_ID,
const guchar *cmap,
gint num_colors)
{
return _gimp_image_set_cmap (image_ID,
num_colors * 3,
cmap);
}
guchar *
gimp_image_get_thumbnail_data (gint32 image_ID,
gint *width,
gint *height,
gint *bpp)
{
gint ret_width;
gint ret_height;
guchar *image_data;
gint data_size;
_gimp_image_thumbnail (image_ID,
*width,
*height,
&ret_width,
&ret_height,
bpp,
&data_size,
&image_data);
*width = ret_width;
*height = ret_height;
return image_data;
}
/**
* gimp_image_attach_new_parasite:
* @image_ID: the ID of the image to attach the #GimpParasite to.
* @name: the name of the #GimpParasite to create and attach.
* @flags: the flags set on the #GimpParasite.
* @size: the size of the parasite data in bytes.
* @data: a pointer to the data attached with the #GimpParasite.
*
* Convenience function that creates a parasite and attaches it
* to the GIMP.
*
* See Also: gimp_image_parasite_attach()
*/
void
gimp_image_attach_new_parasite (gint32 image_ID,
const gchar *name,
gint flags,
gint size,
gconstpointer data)
{
GimpParasite *parasite = gimp_parasite_new (name, flags, size, data);
gimp_image_parasite_attach (image_ID, parasite);
gimp_parasite_free (parasite);
}