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gimp/app/core/gimpimage-item-list.c

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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 "libgimpbase/gimpbase.h"
#include "core-types.h"
#include "gimpchannel.h"
#include "gimpcontext.h"
#include "gimpimage.h"
#include "gimpimage-item-list.h"
#include "gimpimage-undo.h"
#include "gimpitem.h"
#include "gimplayer.h"
#include "gimpobjectqueue.h"
#include "gimpprogress.h"
#include "vectors/gimpvectors.h"
#include "gimp-intl.h"
/* public functions */
gboolean
gimp_image_item_list_bounds (GimpImage *image,
GList *list,
gint *x,
gint *y,
gint *width,
gint *height)
{
GList *l;
gboolean bounds = FALSE;
g_return_val_if_fail (GIMP_IS_IMAGE (image), FALSE);
g_return_val_if_fail (x != 0, FALSE);
g_return_val_if_fail (y != 0, FALSE);
g_return_val_if_fail (width != 0, FALSE);
g_return_val_if_fail (height != 0, FALSE);
for (l = list; l; l = g_list_next (l))
{
GimpItem *item = l->data;
gint tmp_x, tmp_y;
gint tmp_w, tmp_h;
if (gimp_item_bounds (item, &tmp_x, &tmp_y, &tmp_w, &tmp_h))
{
gint off_x, off_y;
gimp_item_get_offset (item, &off_x, &off_y);
if (bounds)
{
gimp_rectangle_union (*x, *y, *width, *height,
tmp_x + off_x, tmp_y + off_y,
tmp_w, tmp_h,
x, y, width, height);
}
else
{
*x = tmp_x + off_x;
*y = tmp_y + off_y;
*width = tmp_w;
*height = tmp_h;
bounds = TRUE;
}
}
}
if (! bounds)
{
*x = 0;
*y = 0;
*width = gimp_image_get_width (image);
*height = gimp_image_get_height (image);
}
return bounds;
}
void
gimp_image_item_list_translate (GimpImage *image,
GList *list,
gint offset_x,
gint offset_y,
gboolean push_undo)
{
g_return_if_fail (GIMP_IS_IMAGE (image));
if (list)
{
GList *l;
if (list->next)
{
if (push_undo)
{
gimp_image_undo_group_start (image, GIMP_UNDO_GROUP_ITEM_DISPLACE,
C_("undo-type", "Translate Items"));
}
for (l = list; l; l = g_list_next (l))
gimp_item_start_transform (GIMP_ITEM (l->data), push_undo);
}
for (l = list; l; l = g_list_next (l))
gimp_item_translate (GIMP_ITEM (l->data),
offset_x, offset_y, push_undo);
if (list->next)
{
for (l = list; l; l = g_list_next (l))
gimp_item_end_transform (GIMP_ITEM (l->data), push_undo);
if (push_undo)
gimp_image_undo_group_end (image);
}
}
}
void
gimp_image_item_list_flip (GimpImage *image,
GList *list,
GimpContext *context,
GimpOrientationType flip_type,
gdouble axis,
GimpTransformResize expected_clip_result)
{
g_return_if_fail (GIMP_IS_IMAGE (image));
g_return_if_fail (GIMP_IS_CONTEXT (context));
if (list)
{
GList *l;
if (list->next)
{
gimp_image_undo_group_start (image, GIMP_UNDO_GROUP_TRANSFORM,
C_("undo-type", "Flip Items"));
for (l = list; l; l = g_list_next (l))
gimp_item_start_transform (GIMP_ITEM (l->data), TRUE);
}
for (l = list; l; l = g_list_next (l))
{
GimpItem *item = l->data;
gimp_item_flip (item, context,
flip_type, axis,
gimp_item_get_clip (item, expected_clip_result) !=
GIMP_TRANSFORM_RESIZE_ADJUST);
}
if (list->next)
{
for (l = list; l; l = g_list_next (l))
gimp_item_end_transform (GIMP_ITEM (l->data), TRUE);
gimp_image_undo_group_end (image);
}
}
}
void
gimp_image_item_list_rotate (GimpImage *image,
GList *list,
GimpContext *context,
GimpRotationType rotate_type,
gdouble center_x,
gdouble center_y,
gboolean clip_result)
{
g_return_if_fail (GIMP_IS_IMAGE (image));
g_return_if_fail (GIMP_IS_CONTEXT (context));
if (list)
{
GList *l;
if (list->next)
{
gimp_image_undo_group_start (image, GIMP_UNDO_GROUP_TRANSFORM,
C_("undo-type", "Rotate Items"));
for (l = list; l; l = g_list_next (l))
gimp_item_start_transform (GIMP_ITEM (l->data), TRUE);
}
for (l = list; l; l = g_list_next (l))
{
GimpItem *item = l->data;
gimp_item_rotate (item, context,
rotate_type, center_x, center_y,
gimp_item_get_clip (item, clip_result));
}
if (list->next)
{
for (l = list; l; l = g_list_next (l))
gimp_item_end_transform (GIMP_ITEM (l->data), TRUE);
gimp_image_undo_group_end (image);
}
}
}
void
gimp_image_item_list_transform (GimpImage *image,
GList *list,
GimpContext *context,
const GimpMatrix3 *matrix,
GimpTransformDirection direction,
GimpInterpolationType interpolation_type,
GimpTransformResize clip_result,
GimpProgress *progress)
{
g_return_if_fail (GIMP_IS_IMAGE (image));
g_return_if_fail (GIMP_IS_CONTEXT (context));
g_return_if_fail (progress == NULL || GIMP_IS_PROGRESS (progress));
if (list)
{
GimpObjectQueue *queue = NULL;
GList *l;
if (progress)
{
queue = gimp_object_queue_new (progress);
progress = GIMP_PROGRESS (queue);
gimp_object_queue_push_list (queue, list);
}
if (list->next)
{
gimp_image_undo_group_start (image, GIMP_UNDO_GROUP_TRANSFORM,
C_("undo-type", "Transform Items"));
for (l = list; l; l = g_list_next (l))
gimp_item_start_transform (GIMP_ITEM (l->data), TRUE);
}
for (l = list; l; l = g_list_next (l))
{
GimpItem *item = l->data;
if (queue)
gimp_object_queue_pop (queue);
gimp_item_transform (item, context,
matrix, direction,
interpolation_type,
gimp_item_get_clip (item, clip_result),
progress);
}
if (list->next)
{
for (l = list; l; l = g_list_next (l))
gimp_item_end_transform (GIMP_ITEM (l->data), TRUE);
gimp_image_undo_group_end (image);
}
g_clear_object (&queue);
}
}
/**
* gimp_image_item_list_get_list:
* @image: An @image.
* @type: Which type of items to return.
* @set: Set the returned items are part of.
*
* This function returns a #GList of #GimpItem<!-- -->s for which the
* @type and @set criterions match.
*
* Returns: The list of items.
**/
GList *
gimp_image_item_list_get_list (GimpImage *image,
GimpItemTypeMask type,
GimpItemSet set)
{
GList *all_items;
GList *list;
GList *return_list = NULL;
g_return_val_if_fail (GIMP_IS_IMAGE (image), NULL);
if (type & GIMP_ITEM_TYPE_LAYERS)
{
all_items = gimp_image_get_layer_list (image);
for (list = all_items; list; list = g_list_next (list))
{
GimpItem *item = list->data;
if (gimp_item_is_in_set (item, set))
return_list = g_list_prepend (return_list, item);
}
g_list_free (all_items);
}
if (type & GIMP_ITEM_TYPE_CHANNELS)
{
all_items = gimp_image_get_channel_list (image);
for (list = all_items; list; list = g_list_next (list))
{
GimpItem *item = list->data;
if (gimp_item_is_in_set (item, set))
return_list = g_list_prepend (return_list, item);
}
g_list_free (all_items);
}
if (type & GIMP_ITEM_TYPE_VECTORS)
{
all_items = gimp_image_get_vectors_list (image);
for (list = all_items; list; list = g_list_next (list))
{
GimpItem *item = list->data;
if (gimp_item_is_in_set (item, set))
return_list = g_list_prepend (return_list, item);
}
g_list_free (all_items);
}
return g_list_reverse (return_list);
}
static GList *
gimp_image_item_list_remove_children (GList *list,
const GimpItem *parent)
{
GList *l = list;
while (l)
{
GimpItem *item = l->data;
l = g_list_next (l);
if (gimp_viewable_is_ancestor (GIMP_VIEWABLE (parent),
GIMP_VIEWABLE (item)))
{
list = g_list_remove (list, item);
}
}
return list;
}
/**
* gimp_image_item_list_filter:
* @image:
* @items: the original list of #GimpItem-s.
*
* Filter @list by modifying it directly (so the original list should
* not be used anymore, only its result), removing all children items
* with ancestors also in @list.
*
* Returns: the modified @list where all items which have an ancestor in
* @list have been removed.
*/
GList *
gimp_image_item_list_filter (GList *list)
{
GList *l;
if (! list)
return NULL;
for (l = list; l; l = g_list_next (l))
{
GimpItem *item = l->data;
GList *next;
next = gimp_image_item_list_remove_children (g_list_next (l), item);
l->next = next;
if (next)
next->prev = l;
}
return list;
}
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