423 lines
11 KiB
C
423 lines
11 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 <gdk-pixbuf/gdk-pixbuf.h>
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#include <gegl.h>
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#include "libpikabase/pikabase.h"
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#include "core-types.h"
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#include "pikachannel.h"
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#include "pikacontext.h"
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#include "pikaimage.h"
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#include "pikaimage-item-list.h"
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#include "pikaimage-undo.h"
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#include "pikaitem.h"
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#include "pikalayer.h"
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#include "pikaobjectqueue.h"
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#include "pikaprogress.h"
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#include "vectors/pikavectors.h"
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#include "pika-intl.h"
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/* public functions */
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gboolean
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pika_image_item_list_bounds (PikaImage *image,
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GList *list,
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gint *x,
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gint *y,
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gint *width,
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gint *height)
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{
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GList *l;
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gboolean bounds = FALSE;
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g_return_val_if_fail (PIKA_IS_IMAGE (image), FALSE);
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g_return_val_if_fail (x != 0, FALSE);
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g_return_val_if_fail (y != 0, FALSE);
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g_return_val_if_fail (width != 0, FALSE);
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g_return_val_if_fail (height != 0, FALSE);
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for (l = list; l; l = g_list_next (l))
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{
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PikaItem *item = l->data;
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gint tmp_x, tmp_y;
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gint tmp_w, tmp_h;
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if (pika_item_bounds (item, &tmp_x, &tmp_y, &tmp_w, &tmp_h))
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{
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gint off_x, off_y;
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pika_item_get_offset (item, &off_x, &off_y);
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if (bounds)
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{
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pika_rectangle_union (*x, *y, *width, *height,
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tmp_x + off_x, tmp_y + off_y,
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tmp_w, tmp_h,
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x, y, width, height);
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}
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else
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{
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*x = tmp_x + off_x;
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*y = tmp_y + off_y;
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*width = tmp_w;
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*height = tmp_h;
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bounds = TRUE;
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}
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}
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}
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if (! bounds)
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{
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*x = 0;
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*y = 0;
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*width = pika_image_get_width (image);
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*height = pika_image_get_height (image);
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}
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return bounds;
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}
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void
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pika_image_item_list_translate (PikaImage *image,
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GList *list,
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gint offset_x,
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gint offset_y,
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gboolean push_undo)
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{
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g_return_if_fail (PIKA_IS_IMAGE (image));
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if (list)
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{
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GList *l;
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if (list->next)
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{
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if (push_undo)
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{
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pika_image_undo_group_start (image, PIKA_UNDO_GROUP_ITEM_DISPLACE,
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C_("undo-type", "Translate Items"));
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}
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for (l = list; l; l = g_list_next (l))
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pika_item_start_transform (PIKA_ITEM (l->data), push_undo);
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}
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for (l = list; l; l = g_list_next (l))
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pika_item_translate (PIKA_ITEM (l->data),
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offset_x, offset_y, push_undo);
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if (list->next)
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{
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for (l = list; l; l = g_list_next (l))
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pika_item_end_transform (PIKA_ITEM (l->data), push_undo);
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if (push_undo)
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pika_image_undo_group_end (image);
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}
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}
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}
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void
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pika_image_item_list_flip (PikaImage *image,
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GList *list,
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PikaContext *context,
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PikaOrientationType flip_type,
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gdouble axis,
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PikaTransformResize expected_clip_result)
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{
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g_return_if_fail (PIKA_IS_IMAGE (image));
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g_return_if_fail (PIKA_IS_CONTEXT (context));
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if (list)
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{
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GList *l;
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if (list->next)
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{
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pika_image_undo_group_start (image, PIKA_UNDO_GROUP_TRANSFORM,
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C_("undo-type", "Flip Items"));
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for (l = list; l; l = g_list_next (l))
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pika_item_start_transform (PIKA_ITEM (l->data), TRUE);
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}
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for (l = list; l; l = g_list_next (l))
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{
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PikaItem *item = l->data;
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pika_item_flip (item, context,
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flip_type, axis,
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pika_item_get_clip (item, expected_clip_result) !=
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PIKA_TRANSFORM_RESIZE_ADJUST);
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}
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if (list->next)
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{
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for (l = list; l; l = g_list_next (l))
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pika_item_end_transform (PIKA_ITEM (l->data), TRUE);
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pika_image_undo_group_end (image);
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}
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}
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}
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void
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pika_image_item_list_rotate (PikaImage *image,
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GList *list,
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PikaContext *context,
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PikaRotationType rotate_type,
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gdouble center_x,
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gdouble center_y,
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gboolean clip_result)
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{
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g_return_if_fail (PIKA_IS_IMAGE (image));
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g_return_if_fail (PIKA_IS_CONTEXT (context));
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if (list)
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{
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GList *l;
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if (list->next)
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{
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pika_image_undo_group_start (image, PIKA_UNDO_GROUP_TRANSFORM,
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C_("undo-type", "Rotate Items"));
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for (l = list; l; l = g_list_next (l))
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pika_item_start_transform (PIKA_ITEM (l->data), TRUE);
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}
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for (l = list; l; l = g_list_next (l))
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{
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PikaItem *item = l->data;
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pika_item_rotate (item, context,
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rotate_type, center_x, center_y,
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pika_item_get_clip (item, clip_result));
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}
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if (list->next)
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{
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for (l = list; l; l = g_list_next (l))
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pika_item_end_transform (PIKA_ITEM (l->data), TRUE);
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pika_image_undo_group_end (image);
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}
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}
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}
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void
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pika_image_item_list_transform (PikaImage *image,
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GList *list,
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PikaContext *context,
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const PikaMatrix3 *matrix,
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PikaTransformDirection direction,
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PikaInterpolationType interpolation_type,
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PikaTransformResize clip_result,
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PikaProgress *progress)
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{
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g_return_if_fail (PIKA_IS_IMAGE (image));
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g_return_if_fail (PIKA_IS_CONTEXT (context));
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g_return_if_fail (progress == NULL || PIKA_IS_PROGRESS (progress));
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if (list)
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{
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PikaObjectQueue *queue = NULL;
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GList *l;
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if (progress)
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{
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queue = pika_object_queue_new (progress);
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progress = PIKA_PROGRESS (queue);
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pika_object_queue_push_list (queue, list);
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}
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if (list->next)
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{
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pika_image_undo_group_start (image, PIKA_UNDO_GROUP_TRANSFORM,
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C_("undo-type", "Transform Items"));
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for (l = list; l; l = g_list_next (l))
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pika_item_start_transform (PIKA_ITEM (l->data), TRUE);
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}
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for (l = list; l; l = g_list_next (l))
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{
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PikaItem *item = l->data;
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if (queue)
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pika_object_queue_pop (queue);
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pika_item_transform (item, context,
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matrix, direction,
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interpolation_type,
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pika_item_get_clip (item, clip_result),
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progress);
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}
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if (list->next)
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{
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for (l = list; l; l = g_list_next (l))
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pika_item_end_transform (PIKA_ITEM (l->data), TRUE);
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pika_image_undo_group_end (image);
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}
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g_clear_object (&queue);
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}
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}
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/**
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* pika_image_item_list_get_list:
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* @image: An @image.
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* @type: Which type of items to return.
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* @set: Set the returned items are part of.
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*
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* This function returns a #GList of #PikaItem<!-- -->s for which the
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* @type and @set criterions match.
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*
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* Returns: The list of items.
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**/
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GList *
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pika_image_item_list_get_list (PikaImage *image,
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PikaItemTypeMask type,
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PikaItemSet set)
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{
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GList *all_items;
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GList *list;
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GList *return_list = NULL;
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g_return_val_if_fail (PIKA_IS_IMAGE (image), NULL);
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if (type & PIKA_ITEM_TYPE_LAYERS)
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{
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all_items = pika_image_get_layer_list (image);
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for (list = all_items; list; list = g_list_next (list))
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{
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PikaItem *item = list->data;
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if (pika_item_is_in_set (item, set))
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return_list = g_list_prepend (return_list, item);
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}
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g_list_free (all_items);
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}
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if (type & PIKA_ITEM_TYPE_CHANNELS)
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{
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all_items = pika_image_get_channel_list (image);
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for (list = all_items; list; list = g_list_next (list))
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{
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PikaItem *item = list->data;
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if (pika_item_is_in_set (item, set))
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return_list = g_list_prepend (return_list, item);
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}
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g_list_free (all_items);
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}
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if (type & PIKA_ITEM_TYPE_VECTORS)
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{
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all_items = pika_image_get_vectors_list (image);
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for (list = all_items; list; list = g_list_next (list))
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{
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PikaItem *item = list->data;
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if (pika_item_is_in_set (item, set))
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return_list = g_list_prepend (return_list, item);
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}
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g_list_free (all_items);
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}
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return g_list_reverse (return_list);
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}
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static GList *
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pika_image_item_list_remove_children (GList *list,
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const PikaItem *parent)
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{
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GList *l = list;
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while (l)
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{
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PikaItem *item = l->data;
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l = g_list_next (l);
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if (pika_viewable_is_ancestor (PIKA_VIEWABLE (parent),
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PIKA_VIEWABLE (item)))
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{
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list = g_list_remove (list, item);
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}
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}
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return list;
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}
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/**
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* pika_image_item_list_filter:
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* @image:
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* @items: the original list of #PikaItem-s.
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*
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* Filter @list by modifying it directly (so the original list should
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||
|
|
* 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 *
|
||
|
|
pika_image_item_list_filter (GList *list)
|
||
|
|
{
|
||
|
|
GList *l;
|
||
|
|
|
||
|
|
if (! list)
|
||
|
|
return NULL;
|
||
|
|
|
||
|
|
for (l = list; l; l = g_list_next (l))
|
||
|
|
{
|
||
|
|
PikaItem *item = l->data;
|
||
|
|
GList *next;
|
||
|
|
|
||
|
|
next = pika_image_item_list_remove_children (g_list_next (l), item);
|
||
|
|
|
||
|
|
l->next = next;
|
||
|
|
if (next)
|
||
|
|
next->prev = l;
|
||
|
|
}
|
||
|
|
|
||
|
|
return list;
|
||
|
|
}
|
