234 lines
8.2 KiB
C
234 lines
8.2 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 "libpikabase/pikabase.h"
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#include "core-types.h"
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#include "pikaimage.h"
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#include "pikachannel.h"
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#include "pikachannelundo.h"
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enum
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{
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PROP_0,
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PROP_PREV_PARENT,
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PROP_PREV_POSITION,
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PROP_PREV_CHANNELS
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};
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static void pika_channel_undo_constructed (GObject *object);
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static void pika_channel_undo_finalize (GObject *object);
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static void pika_channel_undo_set_property (GObject *object,
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guint property_id,
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const GValue *value,
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GParamSpec *pspec);
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static void pika_channel_undo_get_property (GObject *object,
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guint property_id,
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GValue *value,
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GParamSpec *pspec);
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static gint64 pika_channel_undo_get_memsize (PikaObject *object,
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gint64 *gui_size);
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static void pika_channel_undo_pop (PikaUndo *undo,
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PikaUndoMode undo_mode,
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PikaUndoAccumulator *accum);
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G_DEFINE_TYPE (PikaChannelUndo, pika_channel_undo, PIKA_TYPE_ITEM_UNDO)
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#define parent_class pika_channel_undo_parent_class
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static void
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pika_channel_undo_class_init (PikaChannelUndoClass *klass)
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{
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GObjectClass *object_class = G_OBJECT_CLASS (klass);
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PikaObjectClass *pika_object_class = PIKA_OBJECT_CLASS (klass);
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PikaUndoClass *undo_class = PIKA_UNDO_CLASS (klass);
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object_class->constructed = pika_channel_undo_constructed;
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object_class->finalize = pika_channel_undo_finalize;
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object_class->set_property = pika_channel_undo_set_property;
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object_class->get_property = pika_channel_undo_get_property;
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pika_object_class->get_memsize = pika_channel_undo_get_memsize;
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undo_class->pop = pika_channel_undo_pop;
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g_object_class_install_property (object_class, PROP_PREV_PARENT,
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g_param_spec_object ("prev-parent",
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NULL, NULL,
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PIKA_TYPE_CHANNEL,
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PIKA_PARAM_READWRITE |
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G_PARAM_CONSTRUCT_ONLY));
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g_object_class_install_property (object_class, PROP_PREV_POSITION,
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g_param_spec_int ("prev-position",
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NULL, NULL,
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0, G_MAXINT, 0,
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PIKA_PARAM_READWRITE |
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G_PARAM_CONSTRUCT_ONLY));
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g_object_class_install_property (object_class, PROP_PREV_CHANNELS,
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g_param_spec_pointer ("prev-channels",
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NULL, NULL,
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PIKA_PARAM_READWRITE |
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G_PARAM_CONSTRUCT_ONLY));
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}
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static void
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pika_channel_undo_init (PikaChannelUndo *undo)
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{
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undo->prev_channels = NULL;
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}
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static void
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pika_channel_undo_constructed (GObject *object)
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{
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G_OBJECT_CLASS (parent_class)->constructed (object);
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pika_assert (PIKA_IS_CHANNEL (PIKA_ITEM_UNDO (object)->item));
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}
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static void
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pika_channel_undo_finalize (GObject *object)
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{
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PikaChannelUndo *channel_undo = PIKA_CHANNEL_UNDO (object);
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g_clear_pointer (&channel_undo->prev_channels, g_list_free);
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G_OBJECT_CLASS (parent_class)->finalize (object);
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}
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static void
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pika_channel_undo_set_property (GObject *object,
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guint property_id,
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const GValue *value,
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GParamSpec *pspec)
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{
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PikaChannelUndo *channel_undo = PIKA_CHANNEL_UNDO (object);
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switch (property_id)
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{
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case PROP_PREV_PARENT:
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channel_undo->prev_parent = g_value_get_object (value);
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break;
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case PROP_PREV_POSITION:
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channel_undo->prev_position = g_value_get_int (value);
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break;
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case PROP_PREV_CHANNELS:
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channel_undo->prev_channels = g_list_copy (g_value_get_pointer (value));
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
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break;
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}
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}
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static void
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pika_channel_undo_get_property (GObject *object,
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guint property_id,
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GValue *value,
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GParamSpec *pspec)
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{
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PikaChannelUndo *channel_undo = PIKA_CHANNEL_UNDO (object);
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switch (property_id)
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{
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case PROP_PREV_PARENT:
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g_value_set_object (value, channel_undo->prev_parent);
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break;
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case PROP_PREV_POSITION:
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g_value_set_int (value, channel_undo->prev_position);
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break;
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case PROP_PREV_CHANNELS:
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g_value_set_pointer (value, channel_undo->prev_channels);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
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break;
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}
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}
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static gint64
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pika_channel_undo_get_memsize (PikaObject *object,
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gint64 *gui_size)
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{
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PikaItemUndo *item_undo = PIKA_ITEM_UNDO (object);
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gint64 memsize = 0;
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if (! pika_item_is_attached (item_undo->item))
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memsize += pika_object_get_memsize (PIKA_OBJECT (item_undo->item),
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gui_size);
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return memsize + PIKA_OBJECT_CLASS (parent_class)->get_memsize (object,
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gui_size);
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}
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static void
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pika_channel_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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PikaChannelUndo *channel_undo = PIKA_CHANNEL_UNDO (undo);
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PikaChannel *channel = PIKA_CHANNEL (PIKA_ITEM_UNDO (undo)->item);
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PIKA_UNDO_CLASS (parent_class)->pop (undo, undo_mode, accum);
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if ((undo_mode == PIKA_UNDO_MODE_UNDO &&
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undo->undo_type == PIKA_UNDO_CHANNEL_ADD) ||
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(undo_mode == PIKA_UNDO_MODE_REDO &&
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undo->undo_type == PIKA_UNDO_CHANNEL_REMOVE))
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{
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/* remove channel */
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/* record the current parent and position */
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channel_undo->prev_parent = pika_channel_get_parent (channel);
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channel_undo->prev_position = pika_item_get_index (PIKA_ITEM (channel));
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pika_image_remove_channel (undo->image, channel, FALSE,
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channel_undo->prev_channels);
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}
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else
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{
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/* restore channel */
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/* record the active channel */
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g_clear_pointer (&channel_undo->prev_channels, g_list_free);
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channel_undo->prev_channels = g_list_copy (pika_image_get_selected_channels (undo->image));
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pika_image_add_channel (undo->image, channel,
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channel_undo->prev_parent,
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channel_undo->prev_position, FALSE);
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}
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}
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