gimp/app/core/gimpimage-metadata.c

185 lines
4.6 KiB
C

/* GIMP - The GNU Image Manipulation Program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <cairo.h>
#include <gdk-pixbuf/gdk-pixbuf.h>
#include <gegl.h>
#include "libgimpbase/gimpbase.h"
#include "libgimpcolor/gimpcolor.h"
#include "core-types.h"
#include "gimpimage.h"
#include "gimpimage-color-profile.h"
#include "gimpimage-metadata.h"
#include "gimpimage-private.h"
#include "gimpimage-undo-push.h"
/* public functions */
GimpMetadata *
gimp_image_get_metadata (GimpImage *image)
{
GimpImagePrivate *private;
g_return_val_if_fail (GIMP_IS_IMAGE (image), NULL);
private = GIMP_IMAGE_GET_PRIVATE (image);
return private->metadata;
}
void
gimp_image_set_metadata (GimpImage *image,
GimpMetadata *metadata,
gboolean push_undo)
{
GimpImagePrivate *private;
g_return_if_fail (GIMP_IS_IMAGE (image));
private = GIMP_IMAGE_GET_PRIVATE (image);
if (metadata != private->metadata)
{
if (push_undo)
gimp_image_undo_push_image_metadata (image, NULL);
g_set_object (&private->metadata, metadata);
if (private->metadata)
{
gimp_image_metadata_update_pixel_size (image);
gimp_image_metadata_update_bits_per_sample (image);
gimp_image_metadata_update_resolution (image);
gimp_image_metadata_update_colorspace (image);
}
g_object_notify (G_OBJECT (image), "metadata");
}
}
void
gimp_image_metadata_update_pixel_size (GimpImage *image)
{
GimpMetadata *metadata;
g_return_if_fail (GIMP_IS_IMAGE (image));
metadata = gimp_image_get_metadata (image);
if (metadata)
{
gimp_metadata_set_pixel_size (metadata,
gimp_image_get_width (image),
gimp_image_get_height (image));
}
}
void
gimp_image_metadata_update_bits_per_sample (GimpImage *image)
{
GimpMetadata *metadata;
g_return_if_fail (GIMP_IS_IMAGE (image));
metadata = gimp_image_get_metadata (image);
if (metadata)
{
switch (gimp_image_get_component_type (image))
{
case GIMP_COMPONENT_TYPE_U8:
gimp_metadata_set_bits_per_sample (metadata, 8);
break;
case GIMP_COMPONENT_TYPE_U16:
case GIMP_COMPONENT_TYPE_HALF:
gimp_metadata_set_bits_per_sample (metadata, 16);
break;
case GIMP_COMPONENT_TYPE_U32:
case GIMP_COMPONENT_TYPE_FLOAT:
gimp_metadata_set_bits_per_sample (metadata, 32);
break;
case GIMP_COMPONENT_TYPE_DOUBLE:
gimp_metadata_set_bits_per_sample (metadata, 64);
break;
}
}
}
void
gimp_image_metadata_update_resolution (GimpImage *image)
{
GimpMetadata *metadata;
g_return_if_fail (GIMP_IS_IMAGE (image));
metadata = gimp_image_get_metadata (image);
if (metadata)
{
gdouble xres, yres;
gimp_image_get_resolution (image, &xres, &yres);
gimp_metadata_set_resolution (metadata, xres, yres,
gimp_image_get_unit (image));
}
}
void
gimp_image_metadata_update_colorspace (GimpImage *image)
{
GimpMetadata *metadata;
g_return_if_fail (GIMP_IS_IMAGE (image));
metadata = gimp_image_get_metadata (image);
if (metadata)
{
/* See the discussions in issue #3532 and issue #301 */
GimpColorProfile *profile = gimp_image_get_color_profile (image);
GimpMetadataColorspace space = GIMP_METADATA_COLORSPACE_UNSPECIFIED;
if (profile)
{
static GimpColorProfile *adobe = NULL;
if (! adobe)
adobe = gimp_color_profile_new_rgb_adobe ();
if (gimp_color_profile_is_equal (profile, adobe))
space = GIMP_METADATA_COLORSPACE_ADOBERGB;
}
else
{
space = GIMP_METADATA_COLORSPACE_SRGB;
}
gimp_metadata_set_colorspace (metadata, space);
}
}