1 files changed, 56 insertions, 0 deletions
diff --git a/include/drawinglayer/primitive2d/hiddengeometryprimitive2d.hxx b/include/drawinglayer/primitive2d/hiddengeometryprimitive2d.hxx
new file mode 100644
index 000000000..3a13d2ab4
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+++ b/include/drawinglayer/primitive2d/hiddengeometryprimitive2d.hxx
@@ -0,0 +1,56 @@
+/* -*- 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
+{
+        // This primitive is used to represent geometry for non-visible objects,
+        // e.g. a PresObj's outline. To still be able to use primitives for HitTest
+        // functionality, the 2d decompositions will produce an as much as possible
+        // simplified line geometry encapsulated in this primitive when there is no
+        // line geometry. In a further enhanced version this may change to 'if neither
+        // filled nor lines' creation criteria. The whole primitive decomposes to nothing,
+        // so no one not knowing it will be influenced. Only helper processors for hit test
+        // (and maybe BoundRect extractors) will use it and its children subcontent.
+        class DRAWINGLAYER_DLLPUBLIC HiddenGeometryPrimitive2D final : public GroupPrimitive2D
+        {
+        public:
+            explicit HiddenGeometryPrimitive2D(Primitive2DContainer&& aChildren);
+
+            // despite returning an empty decomposition since it's no visualisation data,
+            // range calculation is intended to use hidden geometry, so
+            // the local implementation will return the children's range
+            virtual basegfx::B2DRange getB2DRange(const geometry::ViewInformation2D& rViewInformation) const override;
+
+            /// local decomposition. Implementation will return empty Primitive2DSequence
+            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: */