1 files changed, 68 insertions, 0 deletions
diff --git a/include/drawinglayer/primitive2d/unifiedtransparenceprimitive2d.hxx b/include/drawinglayer/primitive2d/unifiedtransparenceprimitive2d.hxx
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+++ b/include/drawinglayer/primitive2d/unifiedtransparenceprimitive2d.hxx
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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 .
+ */
+
+#pragma once
+
+#include <drawinglayer/drawinglayerdllapi.h>
+
+#include <drawinglayer/primitive2d/groupprimitive2d.hxx>
+
+
+namespace drawinglayer::primitive2d
+{
+        /** UnifiedTransparencePrimitive2D class
+
+            This primitive encapsulates a child hierarchy and defines
+            that it shall be visualized with the given transparency. That
+            transparency is unique for all contained geometry, so that
+            e.g. overlapping polygons in the child geometry will not show
+            regions of combined transparency, but be all rendered with the
+            defined, single transparency.
+         */
+        class DRAWINGLAYER_DLLPUBLIC UnifiedTransparencePrimitive2D final : public GroupPrimitive2D
+        {
+        private:
+            /// the unified transparence
+            double                              mfTransparence;
+
+        public:
+            /// constructor
+            UnifiedTransparencePrimitive2D(
+                const Primitive2DContainer& rChildren,
+                double fTransparence);
+
+            /// data read access
+            double getTransparence() const { return mfTransparence; }
+
+            /// compare operator
+            virtual bool operator==(const BasePrimitive2D& rPrimitive) const override;
+
+            /// own getB2DRange implementation to include transparent geometries to BoundRect calculations
+            virtual basegfx::B2DRange getB2DRange(const geometry::ViewInformation2D& rViewInformation) const override;
+
+            /// create decomposition
+            virtual void get2DDecomposition(Primitive2DDecompositionVisitor& rVisitor, const geometry::ViewInformation2D& rViewInformation) const override;
+
+            /// provide unique ID
+            virtual sal_uInt32 getPrimitive2DID() const override;
+        };
+} // end of namespace drawinglayer::primitive2d
+
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */