mirror of https://github.com/GNOME/gimp.git
270 lines
9.1 KiB
C
270 lines
9.1 KiB
C
/* GIMP - The GNU Image Manipulation Program
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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 2 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, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#include "config.h"
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#include <glib-object.h>
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#include "core-types.h"
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#include "gimpcontainer.h"
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#include "gimpimage.h"
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#include "gimplayer.h"
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#include "gimplayer-floating-sel.h"
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#include "gimplayerundo.h"
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enum
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{
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PROP_0,
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PROP_PREV_POSITION,
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PROP_PREV_LAYER
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};
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static GObject * gimp_layer_undo_constructor (GType type,
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guint n_params,
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GObjectConstructParam *params);
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static void gimp_layer_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 gimp_layer_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 gimp_layer_undo_get_memsize (GimpObject *object,
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gint64 *gui_size);
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static void gimp_layer_undo_pop (GimpUndo *undo,
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GimpUndoMode undo_mode,
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GimpUndoAccumulator *accum);
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G_DEFINE_TYPE (GimpLayerUndo, gimp_layer_undo, GIMP_TYPE_ITEM_UNDO)
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#define parent_class gimp_layer_undo_parent_class
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static void
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gimp_layer_undo_class_init (GimpLayerUndoClass *klass)
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{
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GObjectClass *object_class = G_OBJECT_CLASS (klass);
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GimpObjectClass *gimp_object_class = GIMP_OBJECT_CLASS (klass);
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GimpUndoClass *undo_class = GIMP_UNDO_CLASS (klass);
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object_class->constructor = gimp_layer_undo_constructor;
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object_class->set_property = gimp_layer_undo_set_property;
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object_class->get_property = gimp_layer_undo_get_property;
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gimp_object_class->get_memsize = gimp_layer_undo_get_memsize;
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undo_class->pop = gimp_layer_undo_pop;
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g_object_class_install_property (object_class, PROP_PREV_POSITION,
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g_param_spec_int ("prev-position", NULL, NULL,
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0, G_MAXINT, 0,
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GIMP_PARAM_READWRITE |
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G_PARAM_CONSTRUCT_ONLY));
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g_object_class_install_property (object_class, PROP_PREV_LAYER,
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g_param_spec_object ("prev-layer", NULL, NULL,
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GIMP_TYPE_LAYER,
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GIMP_PARAM_READWRITE |
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G_PARAM_CONSTRUCT_ONLY));
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}
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static void
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gimp_layer_undo_init (GimpLayerUndo *undo)
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{
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}
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static GObject *
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gimp_layer_undo_constructor (GType type,
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guint n_params,
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GObjectConstructParam *params)
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{
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GObject *object;
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GimpLayerUndo *layer_undo;
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object = G_OBJECT_CLASS (parent_class)->constructor (type, n_params, params);
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layer_undo = GIMP_LAYER_UNDO (object);
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g_assert (GIMP_IS_LAYER (GIMP_ITEM_UNDO (object)->item));
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return object;
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}
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static void
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gimp_layer_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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GimpLayerUndo *layer_undo = GIMP_LAYER_UNDO (object);
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switch (property_id)
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{
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case PROP_PREV_POSITION:
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layer_undo->prev_position = g_value_get_int (value);
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break;
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case PROP_PREV_LAYER:
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layer_undo->prev_layer = g_value_get_object (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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gimp_layer_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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GimpLayerUndo *layer_undo = GIMP_LAYER_UNDO (object);
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switch (property_id)
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{
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case PROP_PREV_POSITION:
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g_value_set_int (value, layer_undo->prev_position);
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break;
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case PROP_PREV_LAYER:
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g_value_set_object (value, layer_undo->prev_layer);
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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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gimp_layer_undo_get_memsize (GimpObject *object,
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gint64 *gui_size)
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{
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GimpItemUndo *item_undo = GIMP_ITEM_UNDO (object);
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gint64 memsize = 0;
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if (! gimp_item_is_attached (item_undo->item))
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memsize += gimp_object_get_memsize (GIMP_OBJECT (item_undo->item),
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gui_size);
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return memsize + GIMP_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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gimp_layer_undo_pop (GimpUndo *undo,
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GimpUndoMode undo_mode,
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GimpUndoAccumulator *accum)
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{
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GimpLayerUndo *layer_undo = GIMP_LAYER_UNDO (undo);
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GimpLayer *layer = GIMP_LAYER (GIMP_ITEM_UNDO (undo)->item);
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gboolean old_has_alpha;
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GIMP_UNDO_CLASS (parent_class)->pop (undo, undo_mode, accum);
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old_has_alpha = gimp_image_has_alpha (undo->image);
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if ((undo_mode == GIMP_UNDO_MODE_UNDO &&
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undo->undo_type == GIMP_UNDO_LAYER_ADD) ||
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(undo_mode == GIMP_UNDO_MODE_REDO &&
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undo->undo_type == GIMP_UNDO_LAYER_REMOVE))
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{
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/* remove layer */
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/* record the current position */
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layer_undo->prev_position = gimp_image_get_layer_index (undo->image,
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layer);
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gimp_container_remove (undo->image->layers, GIMP_OBJECT (layer));
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undo->image->layer_stack = g_slist_remove (undo->image->layer_stack,
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layer);
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if (gimp_layer_is_floating_sel (layer))
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{
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/* invalidate the boundary *before* setting the
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* floating_sel pointer to NULL because the selection's
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* outline is affected by the floating_sel and won't be
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* completely cleared otherwise (bug #160247).
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*/
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gimp_drawable_invalidate_boundary (GIMP_DRAWABLE (layer));
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undo->image->floating_sel = NULL;
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/* activate the underlying drawable */
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floating_sel_activate_drawable (layer);
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gimp_image_floating_selection_changed (undo->image);
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}
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else if (layer == gimp_image_get_active_layer (undo->image))
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{
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if (layer_undo->prev_layer)
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{
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gimp_image_set_active_layer (undo->image, layer_undo->prev_layer);
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}
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else if (undo->image->layer_stack)
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{
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gimp_image_set_active_layer (undo->image,
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undo->image->layer_stack->data);
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}
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else
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{
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gimp_image_set_active_layer (undo->image, NULL);
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}
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}
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gimp_item_removed (GIMP_ITEM (layer));
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}
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else
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{
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/* restore layer */
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/* record the active layer */
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layer_undo->prev_layer = gimp_image_get_active_layer (undo->image);
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/* if this is a floating selection, set the fs pointer */
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if (gimp_layer_is_floating_sel (layer))
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undo->image->floating_sel = layer;
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gimp_container_insert (undo->image->layers,
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GIMP_OBJECT (layer), layer_undo->prev_position);
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gimp_image_set_active_layer (undo->image, layer);
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if (gimp_layer_is_floating_sel (layer))
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gimp_image_floating_selection_changed (undo->image);
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GIMP_ITEM (layer)->removed = FALSE;
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if (gimp_layer_get_mask (layer))
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{
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GimpLayerMask *mask = gimp_layer_get_mask (layer);
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GIMP_ITEM (mask)->removed = FALSE;
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}
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}
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if (old_has_alpha != gimp_image_has_alpha (undo->image))
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accum->alpha_changed = TRUE;
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}
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