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/* 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 <gdk-pixbuf/gdk-pixbuf.h>
#include <gegl.h>
#include "core-types.h"
#include "gimp.h"
#include "gimpimage.h"
#include "gimpguide.h"
#include "gimpimage-guides.h"
#include "gimpimage-private.h"
#include "gimpimage-undo-push.h"
#include "gimp-intl.h"
/* public functions */
GimpGuide *
gimp_image_add_hguide (GimpImage *image,
gint position,
gboolean push_undo)
{
GimpGuide *guide;
g_return_val_if_fail (GIMP_IS_IMAGE (image), NULL);
g_return_val_if_fail (position >= 0 &&
position <= gimp_image_get_height (image), NULL);
guide = gimp_guide_new (GIMP_ORIENTATION_HORIZONTAL,
image->gimp->next_guide_ID++);
if (push_undo)
gimp_image_undo_push_guide (image,
C_("undo-type", "Add Horizontal Guide"), guide);
gimp_image_add_guide (image, guide, position);
g_object_unref (G_OBJECT (guide));
return guide;
}
GimpGuide *
gimp_image_add_vguide (GimpImage *image,
gint position,
gboolean push_undo)
{
GimpGuide *guide;
g_return_val_if_fail (GIMP_IS_IMAGE (image), NULL);
g_return_val_if_fail (position >= 0 &&
position <= gimp_image_get_width (image), NULL);
guide = gimp_guide_new (GIMP_ORIENTATION_VERTICAL,
image->gimp->next_guide_ID++);
if (push_undo)
gimp_image_undo_push_guide (image,
C_("undo-type", "Add Vertical Guide"), guide);
gimp_image_add_guide (image, guide, position);
g_object_unref (guide);
return guide;
}
void
gimp_image_add_guide (GimpImage *image,
GimpGuide *guide,
gint position)
{
GimpImagePrivate *private;
g_return_if_fail (GIMP_IS_IMAGE (image));
g_return_if_fail (GIMP_IS_GUIDE (guide));
private = GIMP_IMAGE_GET_PRIVATE (image);
private->guides = g_list_prepend (private->guides, guide);
gimp_guide_set_position (guide, position);
g_object_ref (guide);
gimp_image_guide_added (image, guide);
}
void
gimp_image_remove_guide (GimpImage *image,
GimpGuide *guide,
gboolean push_undo)
{
GimpImagePrivate *private;
g_return_if_fail (GIMP_IS_IMAGE (image));
g_return_if_fail (GIMP_IS_GUIDE (guide));
private = GIMP_IMAGE_GET_PRIVATE (image);
if (gimp_guide_is_custom (guide))
push_undo = FALSE;
if (push_undo)
gimp_image_undo_push_guide (image, C_("undo-type", "Remove Guide"), guide);
private->guides = g_list_remove (private->guides, guide);
gimp_aux_item_removed (GIMP_AUX_ITEM (guide));
gimp_image_guide_removed (image, guide);
gimp_guide_set_position (guide, GIMP_GUIDE_POSITION_UNDEFINED);
g_object_unref (guide);
}
void
gimp_image_move_guide (GimpImage *image,
GimpGuide *guide,
gint position,
gboolean push_undo)
{
g_return_if_fail (GIMP_IS_IMAGE (image));
g_return_if_fail (GIMP_IS_GUIDE (guide));
g_return_if_fail (position >= 0);
if (gimp_guide_get_orientation (guide) == GIMP_ORIENTATION_HORIZONTAL)
g_return_if_fail (position <= gimp_image_get_height (image));
else
g_return_if_fail (position <= gimp_image_get_width (image));
if (gimp_guide_is_custom (guide))
push_undo = FALSE;
if (push_undo)
gimp_image_undo_push_guide (image, C_("undo-type", "Move Guide"), guide);
gimp_guide_set_position (guide, position);
gimp_image_guide_moved (image, guide);
}
GList *
gimp_image_get_guides (GimpImage *image)
{
g_return_val_if_fail (GIMP_IS_IMAGE (image), NULL);
return GIMP_IMAGE_GET_PRIVATE (image)->guides;
}
GimpGuide *
gimp_image_get_guide (GimpImage *image,
guint32 id)
{
GList *guides;
g_return_val_if_fail (GIMP_IS_IMAGE (image), NULL);
for (guides = GIMP_IMAGE_GET_PRIVATE (image)->guides;
guides;
guides = g_list_next (guides))
{
GimpGuide *guide = guides->data;
if (gimp_aux_item_get_ID (GIMP_AUX_ITEM (guide)) == id)
return guide;
}
return NULL;
}
GimpGuide *
gimp_image_get_next_guide (GimpImage *image,
guint32 id,
gboolean *guide_found)
{
GList *guides;
g_return_val_if_fail (GIMP_IS_IMAGE (image), NULL);
g_return_val_if_fail (guide_found != NULL, NULL);
if (id == 0)
*guide_found = TRUE;
else
*guide_found = FALSE;
for (guides = GIMP_IMAGE_GET_PRIVATE (image)->guides;
guides;
guides = g_list_next (guides))
{
GimpGuide *guide = guides->data;
if (*guide_found) /* this is the first guide after the found one */
return guide;
if (gimp_aux_item_get_ID (GIMP_AUX_ITEM (guide)) == id) /* found it, next one will be returned */
*guide_found = TRUE;
}
return NULL;
}
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