170 lines
5.3 KiB
C
170 lines
5.3 KiB
C
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/* PIKA - Photo and Image Kooker Application
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* a rebranding of The GNU Image Manipulation Program (created with heckimp)
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* A derived work which may be trivial. However, any changes may be (C)2023 by Aldercone Studio
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*
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* Original copyright, applying to most contents (license remains unchanged):
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* Copyright (C) 1995 Spencer Kimball and Peter Mattis
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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#include "config.h"
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#include <cairo.h>
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#include <gdk-pixbuf/gdk-pixbuf.h>
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#include <gegl.h>
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#include "libpikacolor/pikacolor.h"
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#include "core-types.h"
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#include "gegl/pika-babl.h"
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#include "pika.h"
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#include "pikadrawable.h"
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#include "pikaimage.h"
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#include "pikaimage-color-profile.h"
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#include "pikaimage-colormap.h"
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#include "pikaimage-convert-type.h"
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#include "pikaimage-undo.h"
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#include "pikaimage-undo-push.h"
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#include "pikaobjectqueue.h"
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#include "pikaprogress.h"
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#include "pika-intl.h"
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gboolean
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pika_image_convert_type (PikaImage *image,
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PikaImageBaseType new_type,
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PikaColorProfile *dest_profile,
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PikaProgress *progress,
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GError **error)
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{
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PikaColorProfile *src_profile;
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PikaImageBaseType old_type;
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const Babl *new_layer_format;
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PikaObjectQueue *queue;
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GList *all_layers;
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PikaDrawable *drawable;
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const gchar *undo_desc = NULL;
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g_return_val_if_fail (PIKA_IS_IMAGE (image), FALSE);
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g_return_val_if_fail (new_type != pika_image_get_base_type (image), FALSE);
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g_return_val_if_fail (new_type != PIKA_INDEXED, FALSE);
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g_return_val_if_fail (pika_babl_is_valid (new_type,
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pika_image_get_precision (image)),
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FALSE);
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g_return_val_if_fail (dest_profile == NULL || PIKA_IS_COLOR_PROFILE (dest_profile),
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FALSE);
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g_return_val_if_fail (progress == NULL || PIKA_IS_PROGRESS (progress), FALSE);
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g_return_val_if_fail (error == NULL || *error == NULL, FALSE);
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new_layer_format = pika_babl_format (new_type,
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pika_image_get_precision (image),
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TRUE,
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pika_image_get_layer_space (image));
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if (dest_profile &&
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! pika_image_validate_color_profile_by_format (new_layer_format,
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dest_profile,
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NULL, error))
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{
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return FALSE;
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}
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switch (new_type)
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{
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case PIKA_RGB:
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undo_desc = C_("undo-type", "Convert Image to RGB");
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break;
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case PIKA_GRAY:
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undo_desc = C_("undo-type", "Convert Image to Grayscale");
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break;
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default:
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g_return_val_if_reached (FALSE);
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}
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pika_set_busy (image->pika);
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queue = pika_object_queue_new (progress);
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progress = PIKA_PROGRESS (queue);
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all_layers = pika_image_get_layer_list (image);
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pika_object_queue_push_list (queue, all_layers);
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g_list_free (all_layers);
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g_object_freeze_notify (G_OBJECT (image));
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pika_image_undo_group_start (image, PIKA_UNDO_GROUP_IMAGE_CONVERT,
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undo_desc);
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src_profile = pika_color_managed_get_color_profile (PIKA_COLOR_MANAGED (image));
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/* Push the image type to the stack */
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pika_image_undo_push_image_type (image, NULL);
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/* Set the new base type */
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old_type = pika_image_get_base_type (image);
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g_object_set (image, "base-type", new_type, NULL);
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/* When converting to/from GRAY, always convert to the new type's
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* builtin profile as a fallback, we need one for convert_type on
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* the same image
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*/
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if (old_type == PIKA_GRAY ||
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new_type == PIKA_GRAY)
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{
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if (! dest_profile)
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dest_profile = pika_image_get_builtin_color_profile (image);
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}
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while ((drawable = pika_object_queue_pop (queue)))
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{
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pika_drawable_convert_type (drawable, image,
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new_type,
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pika_drawable_get_precision (drawable),
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pika_drawable_has_alpha (drawable),
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src_profile,
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dest_profile,
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GEGL_DITHER_NONE, GEGL_DITHER_NONE,
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TRUE, progress);
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}
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if (old_type == PIKA_INDEXED)
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pika_image_unset_colormap (image, TRUE);
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/* When converting to/from GRAY, set the new profile.
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*/
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if (old_type == PIKA_GRAY ||
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new_type == PIKA_GRAY)
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{
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pika_image_set_color_profile (image, dest_profile, NULL);
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}
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pika_image_undo_group_end (image);
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pika_image_mode_changed (image);
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g_object_thaw_notify (G_OBJECT (image));
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g_object_unref (queue);
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pika_unset_busy (image->pika);
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return TRUE;
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}
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