1 files changed, 121 insertions, 0 deletions
diff --git a/app/core/gimpsamplepointundo.c b/app/core/gimpsamplepointundo.c
new file mode 100644
index 0000000..89cd8ae
--- /dev/null
+++ b/app/core/gimpsamplepointundo.c
@@ -0,0 +1,121 @@
+/* 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 "gimpimage-sample-points.h"
+#include "gimpsamplepoint.h"
+#include "gimpsamplepointundo.h"
+
+
+static void   gimp_sample_point_undo_constructed  (GObject             *object);
+
+static void   gimp_sample_point_undo_pop          (GimpUndo            *undo,
+                                                   GimpUndoMode         undo_mode,
+                                                   GimpUndoAccumulator *accum);
+
+
+G_DEFINE_TYPE (GimpSamplePointUndo, gimp_sample_point_undo,
+               GIMP_TYPE_AUX_ITEM_UNDO)
+
+#define parent_class gimp_sample_point_undo_parent_class
+
+
+static void
+gimp_sample_point_undo_class_init (GimpSamplePointUndoClass *klass)
+{
+  GObjectClass  *object_class = G_OBJECT_CLASS (klass);
+  GimpUndoClass *undo_class   = GIMP_UNDO_CLASS (klass);
+
+  object_class->constructed = gimp_sample_point_undo_constructed;
+
+  undo_class->pop           = gimp_sample_point_undo_pop;
+}
+
+static void
+gimp_sample_point_undo_init (GimpSamplePointUndo *undo)
+{
+}
+
+static void
+gimp_sample_point_undo_constructed (GObject *object)
+{
+  GimpSamplePointUndo *sample_point_undo = GIMP_SAMPLE_POINT_UNDO (object);
+  GimpSamplePoint     *sample_point;
+
+  G_OBJECT_CLASS (parent_class)->constructed (object);
+
+  sample_point = GIMP_SAMPLE_POINT (GIMP_AUX_ITEM_UNDO (object)->aux_item);
+
+  gimp_assert (GIMP_IS_SAMPLE_POINT (sample_point));
+
+  gimp_sample_point_get_position (sample_point,
+                                  &sample_point_undo->x,
+                                  &sample_point_undo->y);
+  sample_point_undo->pick_mode = gimp_sample_point_get_pick_mode (sample_point);
+}
+
+static void
+gimp_sample_point_undo_pop (GimpUndo              *undo,
+                            GimpUndoMode           undo_mode,
+                            GimpUndoAccumulator   *accum)
+{
+  GimpSamplePointUndo *sample_point_undo = GIMP_SAMPLE_POINT_UNDO (undo);
+  GimpSamplePoint     *sample_point;
+  gint                 x;
+  gint                 y;
+  GimpColorPickMode    pick_mode;
+
+  GIMP_UNDO_CLASS (parent_class)->pop (undo, undo_mode, accum);
+
+  sample_point = GIMP_SAMPLE_POINT (GIMP_AUX_ITEM_UNDO (undo)->aux_item);
+
+  gimp_sample_point_get_position (sample_point, &x, &y);
+  pick_mode = gimp_sample_point_get_pick_mode (sample_point);
+
+  if (x == GIMP_SAMPLE_POINT_POSITION_UNDEFINED)
+    {
+      gimp_image_add_sample_point (undo->image,
+                                   sample_point,
+                                   sample_point_undo->x,
+                                   sample_point_undo->y);
+    }
+  else if (sample_point_undo->x == GIMP_SAMPLE_POINT_POSITION_UNDEFINED)
+    {
+      gimp_image_remove_sample_point (undo->image, sample_point, FALSE);
+    }
+  else
+    {
+      gimp_sample_point_set_position (sample_point,
+                                      sample_point_undo->x,
+                                      sample_point_undo->y);
+      gimp_sample_point_set_pick_mode (sample_point,
+                                       sample_point_undo->pick_mode);
+
+      gimp_image_sample_point_moved (undo->image, sample_point);
+    }
+
+  sample_point_undo->x         = x;
+  sample_point_undo->y         = y;
+  sample_point_undo->pick_mode = pick_mode;
+}