1 files changed, 122 insertions, 0 deletions
diff --git a/app/core/gimplayermaskpropundo.c b/app/core/gimplayermaskpropundo.c
new file mode 100644
index 0000000..7913202
--- /dev/null
+++ b/app/core/gimplayermaskpropundo.c
@@ -0,0 +1,122 @@
+/* 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 "gimplayer.h"
+#include "gimplayermaskpropundo.h"
+
+
+static void   gimp_layer_mask_prop_undo_constructed (GObject             *object);
+
+static void   gimp_layer_mask_prop_undo_pop         (GimpUndo            *undo,
+                                                     GimpUndoMode         undo_mode,
+                                                     GimpUndoAccumulator *accum);
+
+
+G_DEFINE_TYPE (GimpLayerMaskPropUndo, gimp_layer_mask_prop_undo,
+               GIMP_TYPE_ITEM_UNDO)
+
+#define parent_class gimp_layer_mask_prop_undo_parent_class
+
+
+static void
+gimp_layer_mask_prop_undo_class_init (GimpLayerMaskPropUndoClass *klass)
+{
+  GObjectClass  *object_class = G_OBJECT_CLASS (klass);
+  GimpUndoClass *undo_class   = GIMP_UNDO_CLASS (klass);
+
+  object_class->constructed = gimp_layer_mask_prop_undo_constructed;
+
+  undo_class->pop           = gimp_layer_mask_prop_undo_pop;
+}
+
+static void
+gimp_layer_mask_prop_undo_init (GimpLayerMaskPropUndo *undo)
+{
+}
+
+static void
+gimp_layer_mask_prop_undo_constructed (GObject *object)
+{
+  GimpLayerMaskPropUndo *layer_mask_prop_undo;
+  GimpLayer             *layer;
+
+  layer_mask_prop_undo = GIMP_LAYER_MASK_PROP_UNDO (object);
+
+  G_OBJECT_CLASS (parent_class)->constructed (object);
+
+  gimp_assert (GIMP_IS_LAYER (GIMP_ITEM_UNDO (object)->item));
+
+  layer = GIMP_LAYER (GIMP_ITEM_UNDO (object)->item);
+
+  switch (GIMP_UNDO (object)->undo_type)
+    {
+    case GIMP_UNDO_LAYER_MASK_APPLY:
+      layer_mask_prop_undo->apply = gimp_layer_get_apply_mask (layer);
+      break;
+
+    case GIMP_UNDO_LAYER_MASK_SHOW:
+      layer_mask_prop_undo->show = gimp_layer_get_show_mask (layer);
+      break;
+
+    default:
+      g_return_if_reached ();
+    }
+}
+
+static void
+gimp_layer_mask_prop_undo_pop (GimpUndo            *undo,
+                               GimpUndoMode         undo_mode,
+                               GimpUndoAccumulator *accum)
+{
+  GimpLayerMaskPropUndo *layer_mask_prop_undo = GIMP_LAYER_MASK_PROP_UNDO (undo);
+  GimpLayer             *layer                = GIMP_LAYER (GIMP_ITEM_UNDO (undo)->item);
+
+  GIMP_UNDO_CLASS (parent_class)->pop (undo, undo_mode, accum);
+
+  switch (undo->undo_type)
+    {
+    case GIMP_UNDO_LAYER_MASK_APPLY:
+      {
+        gboolean apply;
+
+        apply = gimp_layer_get_apply_mask (layer);
+        gimp_layer_set_apply_mask (layer, layer_mask_prop_undo->apply, FALSE);
+        layer_mask_prop_undo->apply = apply;
+      }
+      break;
+
+    case GIMP_UNDO_LAYER_MASK_SHOW:
+      {
+        gboolean show;
+
+        show = gimp_layer_get_show_mask (layer);
+        gimp_layer_set_show_mask (layer, layer_mask_prop_undo->show, FALSE);
+        layer_mask_prop_undo->show = show;
+      }
+      break;
+
+    default:
+      g_return_if_reached ();
+    }
+}