summaryrefslogtreecommitdiffstats
path: root/app/core/gimplayerundo.c
diff options
context:
space:
mode:
Diffstat (limited to 'app/core/gimplayerundo.c')
-rw-r--r--app/core/gimplayerundo.c212
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);
+ }
+}