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-rw-r--r--app/core/gimpimage-item-list.c401
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diff --git a/app/core/gimpimage-item-list.c b/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 "gimpcontext.h"
+#include "gimpimage.h"
+#include "gimpimage-item-list.h"
+#include "gimpimage-undo.h"
+#include "gimpitem.h"
+#include "gimpobjectqueue.h"
+#include "gimpprogress.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,
+ 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", "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, 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_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.
+ *
+ * Return value: 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;
+}
+
+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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