diff options
Diffstat (limited to 'app/core/gimplayerundo.c')
| -rw-r--r-- | app/core/gimplayerundo.c | 212 |
1 files changed, 212 insertions, 0 deletions
diff --git a/app/core/gimplayerundo.c b/app/core/gimplayerundo.c new file mode 100644 index 0000000..64a1de3 --- /dev/null +++ b/app/core/gimplayerundo.c @@ -0,0 +1,212 @@ +/* GIMP - The GNU Image Manipulation Program + * 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 "gimpimage.h" +#include "gimplayer.h" +#include "gimplayerundo.h" + + +enum +{ + PROP_0, + PROP_PREV_PARENT, + PROP_PREV_POSITION, + PROP_PREV_LAYER +}; + + +static void gimp_layer_undo_constructed (GObject *object); +static void gimp_layer_undo_set_property (GObject *object, + guint property_id, + const GValue *value, + GParamSpec *pspec); +static void gimp_layer_undo_get_property (GObject *object, + guint property_id, + GValue *value, + GParamSpec *pspec); + +static gint64 gimp_layer_undo_get_memsize (GimpObject *object, + gint64 *gui_size); + +static void gimp_layer_undo_pop (GimpUndo *undo, + GimpUndoMode undo_mode, + GimpUndoAccumulator *accum); + + +G_DEFINE_TYPE (GimpLayerUndo, gimp_layer_undo, GIMP_TYPE_ITEM_UNDO) + +#define parent_class gimp_layer_undo_parent_class + + +static void +gimp_layer_undo_class_init (GimpLayerUndoClass *klass) +{ + GObjectClass *object_class = G_OBJECT_CLASS (klass); + GimpObjectClass *gimp_object_class = GIMP_OBJECT_CLASS (klass); + GimpUndoClass *undo_class = GIMP_UNDO_CLASS (klass); + + object_class->constructed = gimp_layer_undo_constructed; + object_class->set_property = gimp_layer_undo_set_property; + object_class->get_property = gimp_layer_undo_get_property; + + gimp_object_class->get_memsize = gimp_layer_undo_get_memsize; + + undo_class->pop = gimp_layer_undo_pop; + + g_object_class_install_property (object_class, PROP_PREV_PARENT, + g_param_spec_object ("prev-parent", + NULL, NULL, + GIMP_TYPE_LAYER, + GIMP_PARAM_READWRITE | + G_PARAM_CONSTRUCT_ONLY)); + + g_object_class_install_property (object_class, PROP_PREV_POSITION, + g_param_spec_int ("prev-position", NULL, NULL, + 0, G_MAXINT, 0, + GIMP_PARAM_READWRITE | + G_PARAM_CONSTRUCT_ONLY)); + + g_object_class_install_property (object_class, PROP_PREV_LAYER, + g_param_spec_object ("prev-layer", NULL, NULL, + GIMP_TYPE_LAYER, + GIMP_PARAM_READWRITE | + G_PARAM_CONSTRUCT_ONLY)); +} + +static void +gimp_layer_undo_init (GimpLayerUndo *undo) +{ +} + +static void +gimp_layer_undo_constructed (GObject *object) +{ + G_OBJECT_CLASS (parent_class)->constructed (object); + + gimp_assert (GIMP_IS_LAYER (GIMP_ITEM_UNDO (object)->item)); +} + +static void +gimp_layer_undo_set_property (GObject *object, + guint property_id, + const GValue *value, + GParamSpec *pspec) +{ + GimpLayerUndo *layer_undo = GIMP_LAYER_UNDO (object); + + switch (property_id) + { + case PROP_PREV_PARENT: + layer_undo->prev_parent = g_value_get_object (value); + break; + case PROP_PREV_POSITION: + layer_undo->prev_position = g_value_get_int (value); + break; + case PROP_PREV_LAYER: + layer_undo->prev_layer = g_value_get_object (value); + break; + + default: + G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec); + break; + } +} + +static void +gimp_layer_undo_get_property (GObject *object, + guint property_id, + GValue *value, + GParamSpec *pspec) +{ + GimpLayerUndo *layer_undo = GIMP_LAYER_UNDO (object); + + switch (property_id) + { + case PROP_PREV_PARENT: + g_value_set_object (value, layer_undo->prev_parent); + break; + case PROP_PREV_POSITION: + g_value_set_int (value, layer_undo->prev_position); + break; + case PROP_PREV_LAYER: + g_value_set_object (value, layer_undo->prev_layer); + break; + + default: + G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec); + break; + } +} + +static gint64 +gimp_layer_undo_get_memsize (GimpObject *object, + gint64 *gui_size) +{ + GimpItemUndo *item_undo = GIMP_ITEM_UNDO (object); + gint64 memsize = 0; + + if (! gimp_item_is_attached (item_undo->item)) + memsize += gimp_object_get_memsize (GIMP_OBJECT (item_undo->item), + gui_size); + + return memsize + GIMP_OBJECT_CLASS (parent_class)->get_memsize (object, + gui_size); +} + +static void +gimp_layer_undo_pop (GimpUndo *undo, + GimpUndoMode undo_mode, + GimpUndoAccumulator *accum) +{ + GimpLayerUndo *layer_undo = GIMP_LAYER_UNDO (undo); + GimpLayer *layer = GIMP_LAYER (GIMP_ITEM_UNDO (undo)->item); + + GIMP_UNDO_CLASS (parent_class)->pop (undo, undo_mode, accum); + + if ((undo_mode == GIMP_UNDO_MODE_UNDO && + undo->undo_type == GIMP_UNDO_LAYER_ADD) || + (undo_mode == GIMP_UNDO_MODE_REDO && + undo->undo_type == GIMP_UNDO_LAYER_REMOVE)) + { + /* remove layer */ + + /* record the current parent and position */ + layer_undo->prev_parent = gimp_layer_get_parent (layer); + layer_undo->prev_position = gimp_item_get_index (GIMP_ITEM (layer)); + + gimp_image_remove_layer (undo->image, layer, FALSE, + layer_undo->prev_layer); + } + else + { + /* restore layer */ + + /* record the active layer */ + layer_undo->prev_layer = gimp_image_get_active_layer (undo->image); + + gimp_image_add_layer (undo->image, layer, + layer_undo->prev_parent, + layer_undo->prev_position, FALSE); + } +} |