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+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+#ifndef __com_sun_star_rendering_CompositeOperation_idl__
+#define __com_sun_star_rendering_CompositeOperation_idl__
+
+module com { module sun { module star { module rendering {
+
+/** These constants determine how the primitive color is combined with
+    the background.<p>
+
+    When performing these calculations, it is assumed that all color
+    values are premultiplied with the corresponding alpha values (if
+    no alpha is specified, 1.0 is assumed). Then, the following
+    general compositing operation is performed:
+    <p>
+    C = Ca * Fa + Cb * Fb
+    <p>
+    where C is the result color, Ca and Cb are the input colors,
+    premultiplied with alpha, and Fa and Fb are described for the
+    different composite modes (wherein Aa and Ab denote source and
+    destination alpha, respectively).<p>
+
+    @since OOo 2.0
+ */
+constants CompositeOperation
+{
+    /** Clear the destination.<p>
+
+        Clear the destination area. The function values are: Fa = Fb =
+        0.<p>
+     */
+    const byte CLEAR = 0;
+
+    /** Copy source as-is to the destination.<p>
+
+        Copy source as-is to the destination. The function values are:
+        Fa = 1, Fb = 0.<p>
+     */
+    const byte SOURCE = 1;
+
+    /** Leave the destination as-is.<p>
+
+        Leave the destination as-is. The function values are: Fa = 0,
+        Fb = 1.<p>
+     */
+    const byte DESTINATION = 2;
+
+    /** Copy the source over the destination.<p>
+
+        Copy the source over the destination. The function values are:
+        Fa = 1, Fb = 1-Aa.<p>
+     */
+    const byte OVER = 3;
+
+    /** Copy the source under the destination.<p>
+
+        Copy the source under the destination. The function values
+        are: Fa = 1-Ab, Fb = 1.<p>
+     */
+    const byte UNDER = 4;
+
+    /** Copy the source to the destination.<p>
+
+        Copy the source to the destination, but limited to where the
+        destination is. The function values are: Fa = Ab, Fb = 0.<p>
+     */
+    const byte INSIDE = 5;
+
+    /** Leave the destination as is.<p>
+
+        Leave the destination as is, but only where the source
+        was. The function values are: Fa = 0, Fb = Aa.<p>
+     */
+    const byte INSIDE_REVERSE = 6;
+
+    /** Copy the source to the destination<p>
+
+        Copy the source to the destination, but limited to where the
+        destination is not. The function values are: Fa = 1-Ab, Fb =
+        0.<p>
+     */
+    const byte OUTSIDE = 7;
+
+    /** Leave the destination as is.<p>
+
+        Leave the destination as is, but only where the source has not
+        been. The function values are: Fa = 0, Fb = 1-Aa.<p>
+     */
+    const byte OUTSIDE_REVERSE = 8;
+
+    /** Copy the source over the destination<p>
+
+        Copy the source over the destination, but only where the
+        destination is. Keep the destination. The function values are:
+        Fa = Ab, Fb = 1-Aa.<p>
+     */
+    const byte ATOP = 9;
+
+    /** Copy the destination over the source.<p>
+
+        Copy the destination over the source, but only where the
+        source is. Keep the source. The function values are: Fa =
+        1-Ab, Fb = Aa.<p>
+     */
+    const byte ATOP_REVERSE = 10;
+
+    /** Combine source and destination by exclusive or.<p>
+
+        Take only the parts where either source or destination, but
+        not both visible. The function values are: Fa = 1-Ab, Fb =
+        1-Aa.<p>
+     */
+    const byte XOR = 11;
+
+    /** Add source and destination values.<p>
+
+        Simply add contributions of both source and destination. The
+        resulting color values are limited to the permissible color
+        range, and clipped to the maximal value, if exceeded. The
+        function values are: Fa = 1, Fb = 1.<p>
+    */
+    const byte ADD = 12;
+
+    /** Saturate source and destination.<p>
+
+        Saturate destination with source values. The function values
+        are: Fa = min(1,(1-Ab)/Aa), Fb = 1<p>
+     */
+    const byte SATURATE = 13;
+};
+
+}; }; }; };
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */