121 lines
3.6 KiB
C
121 lines
3.6 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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* 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 "core-types.h"
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#include "pikaimage.h"
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#include "pikaimage-guides.h"
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#include "pikaguide.h"
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#include "pikaguideundo.h"
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static void pika_guide_undo_constructed (GObject *object);
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static void pika_guide_undo_pop (PikaUndo *undo,
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PikaUndoMode undo_mode,
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PikaUndoAccumulator *accum);
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G_DEFINE_TYPE (PikaGuideUndo, pika_guide_undo,
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PIKA_TYPE_AUX_ITEM_UNDO)
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#define parent_class pika_guide_undo_parent_class
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static void
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pika_guide_undo_class_init (PikaGuideUndoClass *klass)
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{
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GObjectClass *object_class = G_OBJECT_CLASS (klass);
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PikaUndoClass *undo_class = PIKA_UNDO_CLASS (klass);
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object_class->constructed = pika_guide_undo_constructed;
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undo_class->pop = pika_guide_undo_pop;
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}
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static void
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pika_guide_undo_init (PikaGuideUndo *undo)
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{
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}
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static void
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pika_guide_undo_constructed (GObject *object)
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{
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PikaGuideUndo *guide_undo = PIKA_GUIDE_UNDO (object);
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PikaGuide *guide;
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G_OBJECT_CLASS (parent_class)->constructed (object);
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guide = PIKA_GUIDE (PIKA_AUX_ITEM_UNDO (object)->aux_item);
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pika_assert (PIKA_IS_GUIDE (guide));
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guide_undo->orientation = pika_guide_get_orientation (guide);
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guide_undo->position = pika_guide_get_position (guide);
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}
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static void
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pika_guide_undo_pop (PikaUndo *undo,
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PikaUndoMode undo_mode,
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PikaUndoAccumulator *accum)
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{
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PikaGuideUndo *guide_undo = PIKA_GUIDE_UNDO (undo);
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PikaGuide *guide;
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PikaOrientationType orientation;
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gint position;
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gboolean moved = FALSE;
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PIKA_UNDO_CLASS (parent_class)->pop (undo, undo_mode, accum);
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guide = PIKA_GUIDE (PIKA_AUX_ITEM_UNDO (undo)->aux_item);
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orientation = pika_guide_get_orientation (guide);
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position = pika_guide_get_position (guide);
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if (position == PIKA_GUIDE_POSITION_UNDEFINED)
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{
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pika_image_add_guide (undo->image, guide, guide_undo->position);
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}
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else if (guide_undo->position == PIKA_GUIDE_POSITION_UNDEFINED)
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{
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pika_image_remove_guide (undo->image, guide, FALSE);
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}
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else
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{
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pika_guide_set_position (guide, guide_undo->position);
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moved = TRUE;
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}
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pika_guide_set_orientation (guide, guide_undo->orientation);
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if (moved || guide_undo->orientation != orientation)
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pika_image_guide_moved (undo->image, guide);
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guide_undo->position = position;
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guide_undo->orientation = orientation;
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}
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