PIKApp/app/core/pikafloatingselectionundo.c

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2023-09-26 00:35:21 +02:00
/* PIKA - Photo and Image Kooker Application
* a rebranding of The GNU Image Manipulation Program (created with heckimp)
* A derived work which may be trivial. However, any changes may be (C)2023 by Aldercone Studio
*
* Original copyright, applying to most contents (license remains unchanged):
* 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 "pikadrawable-floating-selection.h"
#include "pikafloatingselectionundo.h"
#include "pikaimage.h"
#include "pikalayer.h"
#include "pikalayer-floating-selection.h"
static void pika_floating_selection_undo_constructed (GObject *object);
static void pika_floating_selection_undo_pop (PikaUndo *undo,
PikaUndoMode undo_mode,
PikaUndoAccumulator *accum);
G_DEFINE_TYPE (PikaFloatingSelectionUndo, pika_floating_selection_undo,
PIKA_TYPE_ITEM_UNDO)
#define parent_class pika_floating_selection_undo_parent_class
static void
pika_floating_selection_undo_class_init (PikaFloatingSelectionUndoClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
PikaUndoClass *undo_class = PIKA_UNDO_CLASS (klass);
object_class->constructed = pika_floating_selection_undo_constructed;
undo_class->pop = pika_floating_selection_undo_pop;
}
static void
pika_floating_selection_undo_init (PikaFloatingSelectionUndo *undo)
{
}
static void
pika_floating_selection_undo_constructed (GObject *object)
{
PikaFloatingSelectionUndo *floating_sel_undo;
PikaLayer *layer;
floating_sel_undo = PIKA_FLOATING_SELECTION_UNDO (object);
G_OBJECT_CLASS (parent_class)->constructed (object);
pika_assert (PIKA_IS_LAYER (PIKA_ITEM_UNDO (object)->item));
layer = PIKA_LAYER (PIKA_ITEM_UNDO (object)->item);
switch (PIKA_UNDO (object)->undo_type)
{
case PIKA_UNDO_FS_TO_LAYER:
floating_sel_undo->drawable = pika_layer_get_floating_sel_drawable (layer);
break;
default:
g_return_if_reached ();
}
}
static void
pika_floating_selection_undo_pop (PikaUndo *undo,
PikaUndoMode undo_mode,
PikaUndoAccumulator *accum)
{
PikaFloatingSelectionUndo *floating_sel_undo;
PikaLayer *floating_layer;
floating_sel_undo = PIKA_FLOATING_SELECTION_UNDO (undo);
floating_layer = PIKA_LAYER (PIKA_ITEM_UNDO (undo)->item);
PIKA_UNDO_CLASS (parent_class)->pop (undo, undo_mode, accum);
switch (undo->undo_type)
{
case PIKA_UNDO_FS_TO_LAYER:
if (undo_mode == PIKA_UNDO_MODE_UNDO)
{
GList *layers;
/* Update the preview for the floating selection */
pika_viewable_invalidate_preview (PIKA_VIEWABLE (floating_layer));
pika_layer_set_floating_sel_drawable (floating_layer,
floating_sel_undo->drawable);
layers = g_list_prepend (NULL, floating_layer);
pika_image_set_selected_layers (undo->image, layers);
g_list_free (layers);
pika_drawable_attach_floating_sel (pika_layer_get_floating_sel_drawable (floating_layer),
floating_layer);
}
else
{
pika_drawable_detach_floating_sel (pika_layer_get_floating_sel_drawable (floating_layer));
pika_layer_set_floating_sel_drawable (floating_layer, NULL);
}
/* When the floating selection is converted to/from a normal
* layer it does something resembling a name change, so emit the
* "name-changed" signal
*/
pika_object_name_changed (PIKA_OBJECT (floating_layer));
pika_drawable_update (PIKA_DRAWABLE (floating_layer),
0, 0,
pika_item_get_width (PIKA_ITEM (floating_layer)),
pika_item_get_height (PIKA_ITEM (floating_layer)));
break;
default:
g_return_if_reached ();
}
}