130 lines
3.8 KiB
C
130 lines
3.8 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 <string.h>
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#include <gdk-pixbuf/gdk-pixbuf.h>
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#include <gegl.h>
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#include "paint-types.h"
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#include "pikaink.h"
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#include "pikaink-blob.h"
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#include "pikainkundo.h"
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static void pika_ink_undo_constructed (GObject *object);
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static void pika_ink_undo_pop (PikaUndo *undo,
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PikaUndoMode undo_mode,
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PikaUndoAccumulator *accum);
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static void pika_ink_undo_free (PikaUndo *undo,
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PikaUndoMode undo_mode);
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G_DEFINE_TYPE (PikaInkUndo, pika_ink_undo, PIKA_TYPE_PAINT_CORE_UNDO)
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#define parent_class pika_ink_undo_parent_class
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static void
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pika_ink_undo_class_init (PikaInkUndoClass *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_ink_undo_constructed;
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undo_class->pop = pika_ink_undo_pop;
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undo_class->free = pika_ink_undo_free;
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}
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static void
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pika_ink_undo_init (PikaInkUndo *undo)
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{
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undo->last_blobs = NULL;
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}
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static void
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pika_ink_undo_constructed (GObject *object)
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{
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PikaInkUndo *ink_undo = PIKA_INK_UNDO (object);
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PikaInk *ink;
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G_OBJECT_CLASS (parent_class)->constructed (object);
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pika_assert (PIKA_IS_INK (PIKA_PAINT_CORE_UNDO (ink_undo)->paint_core));
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ink = PIKA_INK (PIKA_PAINT_CORE_UNDO (ink_undo)->paint_core);
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if (ink->start_blobs)
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{
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gint i;
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PikaBlob *blob;
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for (i = 0; i < g_list_length (ink->start_blobs); i++)
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{
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blob = g_list_nth_data (ink->start_blobs, i);
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ink_undo->last_blobs = g_list_prepend (ink_undo->last_blobs,
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pika_blob_duplicate (blob));
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}
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ink_undo->last_blobs = g_list_reverse (ink_undo->last_blobs);
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}
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}
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static void
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pika_ink_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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PikaInkUndo *ink_undo = PIKA_INK_UNDO (undo);
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PIKA_UNDO_CLASS (parent_class)->pop (undo, undo_mode, accum);
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if (PIKA_PAINT_CORE_UNDO (ink_undo)->paint_core)
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{
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PikaInk *ink = PIKA_INK (PIKA_PAINT_CORE_UNDO (ink_undo)->paint_core);
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GList *tmp_blobs;
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tmp_blobs = ink->last_blobs;
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ink->last_blobs = ink_undo->last_blobs;
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ink_undo->last_blobs = tmp_blobs;
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}
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}
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static void
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pika_ink_undo_free (PikaUndo *undo,
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PikaUndoMode undo_mode)
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{
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PikaInkUndo *ink_undo = PIKA_INK_UNDO (undo);
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if (ink_undo->last_blobs)
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{
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g_list_free_full (ink_undo->last_blobs, g_free);
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ink_undo->last_blobs = NULL;
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}
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PIKA_UNDO_CLASS (parent_class)->free (undo, undo_mode);
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}
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