409 lines
16 KiB
C
409 lines
16 KiB
C
/* 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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* pikadrawabletreeview.c
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* Copyright (C) 2001-2009 Michael Natterer <mitch@gimp.org>
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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 <gegl.h>
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#include <gtk/gtk.h>
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#include "libpikawidgets/pikawidgets.h"
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#include "widgets-types.h"
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#include "core/pika.h"
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#include "core/pikacontext.h"
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#include "core/pikadrawable.h"
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#include "core/pikadrawable-edit.h"
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#include "core/pikafilloptions.h"
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#include "core/pikaimage.h"
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#include "core/pikaimage-undo.h"
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#include "core/pikapattern.h"
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#include "pikacontainerview.h"
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#include "pikadnd.h"
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#include "pikadrawabletreeview.h"
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#include "pika-intl.h"
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static void pika_drawable_tree_view_view_iface_init (PikaContainerViewInterface *iface);
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static void pika_drawable_tree_view_constructed (GObject *object);
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static gboolean pika_drawable_tree_view_select_items (PikaContainerView *view,
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GList *items,
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GList *paths);
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static gboolean pika_drawable_tree_view_drop_possible(PikaContainerTreeView *view,
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PikaDndType src_type,
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GList *src_viewables,
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PikaViewable *dest_viewable,
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GtkTreePath *drop_path,
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GtkTreeViewDropPosition drop_pos,
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GtkTreeViewDropPosition *return_drop_pos,
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GdkDragAction *return_drag_action);
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static void pika_drawable_tree_view_drop_viewables (PikaContainerTreeView *view,
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GList *src_viewables,
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PikaViewable *dest_viewable,
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GtkTreeViewDropPosition drop_pos);
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static void pika_drawable_tree_view_drop_color (PikaContainerTreeView *view,
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const PikaRGB *color,
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PikaViewable *dest_viewable,
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GtkTreeViewDropPosition drop_pos);
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static void pika_drawable_tree_view_set_image (PikaItemTreeView *view,
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PikaImage *image);
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static void pika_drawable_tree_view_floating_selection_changed
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(PikaImage *image,
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PikaDrawableTreeView *view);
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static void pika_drawable_tree_view_new_pattern_dropped
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(GtkWidget *widget,
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gint x,
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gint y,
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PikaViewable *viewable,
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gpointer data);
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static void pika_drawable_tree_view_new_color_dropped
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(GtkWidget *widget,
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gint x,
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gint y,
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const PikaRGB *color,
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gpointer data);
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G_DEFINE_TYPE_WITH_CODE (PikaDrawableTreeView, pika_drawable_tree_view,
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PIKA_TYPE_ITEM_TREE_VIEW,
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G_IMPLEMENT_INTERFACE (PIKA_TYPE_CONTAINER_VIEW,
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pika_drawable_tree_view_view_iface_init))
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#define parent_class pika_drawable_tree_view_parent_class
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static PikaContainerViewInterface *parent_view_iface = NULL;
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static void
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pika_drawable_tree_view_class_init (PikaDrawableTreeViewClass *klass)
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{
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GObjectClass *object_class;
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PikaContainerTreeViewClass *tree_view_class;
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PikaItemTreeViewClass *item_view_class;
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object_class = G_OBJECT_CLASS (klass);
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tree_view_class = PIKA_CONTAINER_TREE_VIEW_CLASS (klass);
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item_view_class = PIKA_ITEM_TREE_VIEW_CLASS (klass);
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object_class->constructed = pika_drawable_tree_view_constructed;
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tree_view_class->drop_possible = pika_drawable_tree_view_drop_possible;
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tree_view_class->drop_viewables = pika_drawable_tree_view_drop_viewables;
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tree_view_class->drop_color = pika_drawable_tree_view_drop_color;
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item_view_class->set_image = pika_drawable_tree_view_set_image;
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item_view_class->lock_content_icon_name = PIKA_ICON_LOCK_CONTENT;
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item_view_class->lock_content_tooltip = _("Lock pixels");
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item_view_class->lock_position_icon_name = PIKA_ICON_LOCK_POSITION;
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item_view_class->lock_position_tooltip = _("Lock position and size");
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item_view_class->lock_visibility_icon_name = PIKA_ICON_LOCK_VISIBILITY;
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item_view_class->lock_visibility_tooltip = _("Lock visibility");
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}
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static void
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pika_drawable_tree_view_view_iface_init (PikaContainerViewInterface *iface)
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{
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parent_view_iface = g_type_interface_peek_parent (iface);
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iface->select_items = pika_drawable_tree_view_select_items;
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}
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static void
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pika_drawable_tree_view_init (PikaDrawableTreeView *view)
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{
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}
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static void
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pika_drawable_tree_view_constructed (GObject *object)
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{
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PikaContainerTreeView *tree_view = PIKA_CONTAINER_TREE_VIEW (object);
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PikaItemTreeView *item_view = PIKA_ITEM_TREE_VIEW (object);
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G_OBJECT_CLASS (parent_class)->constructed (object);
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pika_dnd_viewable_dest_add (pika_item_tree_view_get_new_button (item_view),
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PIKA_TYPE_PATTERN,
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pika_drawable_tree_view_new_pattern_dropped,
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item_view);
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pika_dnd_color_dest_add (pika_item_tree_view_get_new_button (item_view),
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pika_drawable_tree_view_new_color_dropped,
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item_view);
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pika_dnd_color_dest_add (GTK_WIDGET (tree_view->view),
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NULL, tree_view);
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pika_dnd_viewable_dest_add (GTK_WIDGET (tree_view->view), PIKA_TYPE_PATTERN,
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NULL, tree_view);
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}
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/* PikaContainerView methods */
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static gboolean
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pika_drawable_tree_view_select_items (PikaContainerView *view,
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GList *items,
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GList *paths)
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{
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PikaItemTreeView *item_view = PIKA_ITEM_TREE_VIEW (view);
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PikaImage *image = pika_item_tree_view_get_image (item_view);
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gboolean success = TRUE;
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if (image)
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{
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PikaLayer *floating_sel = pika_image_get_floating_selection (image);
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success = (items == NULL ||
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floating_sel == NULL ||
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(g_list_length (items) == 1 &&
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items->data == PIKA_VIEWABLE (floating_sel)));
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if (! success)
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{
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Pika *pika = image->pika;
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PikaContext *context = pika_get_user_context (pika);
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PikaDisplay *display = pika_context_get_display (context);
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pika_message_literal (pika, G_OBJECT (display), PIKA_MESSAGE_WARNING,
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_("Cannot select items while a floating "
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"selection is active."));
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}
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}
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if (success)
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success = parent_view_iface->select_items (view, items, paths);
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return success;
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}
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/* PikaContainerTreeView methods */
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static gboolean
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pika_drawable_tree_view_drop_possible (PikaContainerTreeView *tree_view,
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PikaDndType src_type,
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GList *src_viewables,
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PikaViewable *dest_viewable,
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GtkTreePath *drop_path,
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GtkTreeViewDropPosition drop_pos,
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GtkTreeViewDropPosition *return_drop_pos,
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GdkDragAction *return_drag_action)
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{
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if (PIKA_CONTAINER_TREE_VIEW_CLASS (parent_class)->drop_possible (tree_view,
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src_type,
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src_viewables,
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dest_viewable,
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drop_path,
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drop_pos,
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return_drop_pos,
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return_drag_action))
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{
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if (src_type == PIKA_DND_TYPE_COLOR ||
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src_type == PIKA_DND_TYPE_PATTERN)
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{
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if (! dest_viewable ||
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pika_item_is_content_locked (PIKA_ITEM (dest_viewable), NULL) ||
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pika_viewable_get_children (PIKA_VIEWABLE (dest_viewable)))
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return FALSE;
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if (return_drop_pos)
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{
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*return_drop_pos = GTK_TREE_VIEW_DROP_INTO_OR_AFTER;
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}
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}
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return TRUE;
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}
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return FALSE;
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}
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static void
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pika_drawable_tree_view_drop_viewables (PikaContainerTreeView *view,
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GList *src_viewables,
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PikaViewable *dest_viewable,
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GtkTreeViewDropPosition drop_pos)
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{
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GList *iter;
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for (iter = src_viewables; iter; iter = iter->next)
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{
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PikaViewable *src_viewable = iter->data;
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if (dest_viewable && PIKA_IS_PATTERN (src_viewable))
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{
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PikaImage *image = pika_item_get_image (PIKA_ITEM (dest_viewable));
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PikaFillOptions *options = pika_fill_options_new (image->pika, NULL, FALSE);
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pika_fill_options_set_style (options, PIKA_FILL_STYLE_PATTERN);
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pika_context_set_pattern (PIKA_CONTEXT (options),
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PIKA_PATTERN (src_viewable));
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pika_drawable_edit_fill (PIKA_DRAWABLE (dest_viewable),
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options,
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C_("undo-type", "Drop pattern to layer"));
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g_object_unref (options);
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pika_image_flush (image);
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return;
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}
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}
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PIKA_CONTAINER_TREE_VIEW_CLASS (parent_class)->drop_viewables (view,
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src_viewables,
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dest_viewable,
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drop_pos);
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}
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static void
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pika_drawable_tree_view_drop_color (PikaContainerTreeView *view,
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const PikaRGB *color,
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PikaViewable *dest_viewable,
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GtkTreeViewDropPosition drop_pos)
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{
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if (dest_viewable)
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{
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PikaImage *image = pika_item_get_image (PIKA_ITEM (dest_viewable));
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PikaFillOptions *options = pika_fill_options_new (image->pika, NULL, FALSE);
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pika_fill_options_set_style (options, PIKA_FILL_STYLE_FG_COLOR);
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pika_context_set_foreground (PIKA_CONTEXT (options), color);
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pika_drawable_edit_fill (PIKA_DRAWABLE (dest_viewable),
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options,
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C_("undo-type", "Drop color to layer"));
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g_object_unref (options);
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pika_image_flush (image);
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}
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}
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/* PikaItemTreeView methods */
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static void
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pika_drawable_tree_view_set_image (PikaItemTreeView *view,
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PikaImage *image)
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{
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if (pika_item_tree_view_get_image (view))
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g_signal_handlers_disconnect_by_func (pika_item_tree_view_get_image (view),
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pika_drawable_tree_view_floating_selection_changed,
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view);
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PIKA_ITEM_TREE_VIEW_CLASS (parent_class)->set_image (view, image);
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if (pika_item_tree_view_get_image (view))
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g_signal_connect (pika_item_tree_view_get_image (view),
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"floating-selection-changed",
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G_CALLBACK (pika_drawable_tree_view_floating_selection_changed),
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view);
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}
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/* callbacks */
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static void
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pika_drawable_tree_view_floating_selection_changed (PikaImage *image,
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PikaDrawableTreeView *view)
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{
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GList *items;
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items = PIKA_ITEM_TREE_VIEW_GET_CLASS (view)->get_selected_items (image);
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items = g_list_copy (items);
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/* update button states */
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pika_container_view_select_items (PIKA_CONTAINER_VIEW (view), items);
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g_list_free (items);
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}
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static void
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pika_drawable_tree_view_new_dropped (PikaItemTreeView *view,
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PikaFillOptions *options,
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const gchar *undo_desc)
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{
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PikaImage *image = pika_item_tree_view_get_image (view);
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PikaItem *item;
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pika_image_undo_group_start (image, PIKA_UNDO_GROUP_EDIT_PASTE,
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_("New Layer"));
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item = PIKA_ITEM_TREE_VIEW_GET_CLASS (view)->new_item (image);
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if (item)
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pika_drawable_edit_fill (PIKA_DRAWABLE (item), options, undo_desc);
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pika_image_undo_group_end (image);
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pika_image_flush (image);
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}
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static void
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pika_drawable_tree_view_new_pattern_dropped (GtkWidget *widget,
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gint x,
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gint y,
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PikaViewable *viewable,
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gpointer data)
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{
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PikaItemTreeView *view = PIKA_ITEM_TREE_VIEW (data);
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PikaImage *image = pika_item_tree_view_get_image (view);
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PikaFillOptions *options = pika_fill_options_new (image->pika, NULL, FALSE);
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pika_fill_options_set_style (options, PIKA_FILL_STYLE_PATTERN);
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pika_context_set_pattern (PIKA_CONTEXT (options), PIKA_PATTERN (viewable));
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pika_drawable_tree_view_new_dropped (view, options,
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C_("undo-type", "Drop pattern to layer"));
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g_object_unref (options);
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}
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static void
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pika_drawable_tree_view_new_color_dropped (GtkWidget *widget,
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gint x,
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gint y,
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const PikaRGB *color,
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gpointer data)
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{
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PikaItemTreeView *view = PIKA_ITEM_TREE_VIEW (data);
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PikaImage *image = pika_item_tree_view_get_image (view);
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PikaFillOptions *options = pika_fill_options_new (image->pika, NULL, FALSE);
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pika_fill_options_set_style (options, PIKA_FILL_STYLE_FG_COLOR);
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pika_context_set_foreground (PIKA_CONTEXT (options), color);
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pika_drawable_tree_view_new_dropped (view, options,
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C_("undo-type", "Drop color to layer"));
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g_object_unref (options);
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}
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