1 files changed, 89 insertions, 0 deletions
diff --git a/app/operations/layer-modes/gimpoperationlayermode.h b/app/operations/layer-modes/gimpoperationlayermode.h
new file mode 100644
index 0000000..a2a5463
--- /dev/null
+++ b/app/operations/layer-modes/gimpoperationlayermode.h
@@ -0,0 +1,89 @@
+/* GIMP - The GNU Image Manipulation Program
+ * Copyright (C) 1995 Spencer Kimball and Peter Mattis
+ *
+ * gimpoperationlayermode.h
+ * Copyright (C) 2008 Michael Natterer <mitch@gimp.org>
+ *
+ * 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/>.
+ */
+
+#ifndef __GIMP_OPERATION_LAYER_MODE_H__
+#define __GIMP_OPERATION_LAYER_MODE_H__
+
+
+#include <gegl-plugin.h>
+
+
+#define GIMP_TYPE_OPERATION_LAYER_MODE            (gimp_operation_layer_mode_get_type ())
+#define GIMP_OPERATION_LAYER_MODE(obj)            (G_TYPE_CHECK_INSTANCE_CAST ((obj), GIMP_TYPE_OPERATION_LAYER_MODE, GimpOperationLayerMode))
+#define GIMP_OPERATION_LAYER_MODE_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass),  GIMP_TYPE_OPERATION_LAYER_MODE, GimpOperationLayerModeClass))
+#define GIMP_IS_OPERATION_LAYER_MODE(obj)         (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GIMP_TYPE_OPERATION_LAYER_MODE))
+#define GIMP_IS_OPERATION_LAYER_MODE_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass),  GIMP_TYPE_OPERATION_LAYER_MODE))
+#define GIMP_OPERATION_LAYER_MODE_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj),  GIMP_TYPE_OPERATION_LAYER_MODE, GimpOperationLayerModeClass))
+
+
+typedef struct _GimpOperationLayerModeClass GimpOperationLayerModeClass;
+
+struct _GimpOperationLayerMode
+{
+  GeglOperationPointComposer3  parent_instance;
+
+  GimpLayerMode                layer_mode;
+  gdouble                      opacity;
+  GimpLayerColorSpace          blend_space;
+  GimpLayerColorSpace          composite_space;
+  GimpLayerCompositeMode       composite_mode;
+
+  gdouble                      prop_opacity;
+  GimpLayerCompositeMode       prop_composite_mode;
+
+  GimpLayerModeFunc            function;
+  GimpLayerModeBlendFunc       blend_function;
+  gboolean                     is_last_node;
+  gboolean                     has_mask;
+};
+
+struct _GimpOperationLayerModeClass
+{
+  GeglOperationPointComposer3Class  parent_class;
+
+  /*  virtual functions  */
+  gboolean                 (* parent_process)      (GeglOperation          *operation,
+                                                    GeglOperationContext   *context,
+                                                    const gchar            *output_prop,
+                                                    const GeglRectangle    *result,
+                                                    gint                    level);
+  gboolean                 (* process)             (GeglOperation          *operation,
+                                                    void                   *in,
+                                                    void                   *aux,
+                                                    void                   *mask,
+                                                    void                   *out,
+                                                    glong                   samples,
+                                                    const GeglRectangle    *roi,
+                                                    gint                    level);
+
+  /* Returns the composite region (any combination of the layer and the
+   * backdrop) that the layer mode affects.  Most modes only affect the
+   * overlapping region, and don't need to override this function.
+   */
+  GimpLayerCompositeRegion (* get_affected_region) (GimpOperationLayerMode *layer_mode);
+};
+
+
+GType                    gimp_operation_layer_mode_get_type            (void) G_GNUC_CONST;
+
+GimpLayerCompositeRegion gimp_operation_layer_mode_get_affected_region (GimpOperationLayerMode *layer_mode);
+
+
+#endif /* __GIMP_OPERATION_LAYER_MODE_H__ */