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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>
+#include <basegfx/matrix/b2dhommatrix.hxx>
+
+
+namespace drawinglayer::primitive2d
+{
+ /** TransformPrimitive2D class
+
+ This is one of the basic grouping primitives and it provides
+ embedding a sequence of primitives (a geometry) into a
+ transformation. All renderers have to handle this, usually by
+ building a current transformation stack (linear combination)
+ and applying this to all to-be-rendered geometry. If not handling
+ this, the output will be mostly wrong since this primitive is
+ widely used.
+
+ It does transform by embedding an existing geometry into a
+ transformation as Child-content. This allows re-usage of the
+ refcounted Uno-Api primitives and their existing, buffered
+ decompositions.
+
+ It could e.g. be used to show a single object geometry in 1000
+ different, transformed states without the need to create those
+ thousand primitive contents.
+ */
+ class DRAWINGLAYER_DLLPUBLIC TransformPrimitive2D final : public GroupPrimitive2D
+ {
+ private:
+ // the transformation to apply to the child geometry
+ basegfx::B2DHomMatrix maTransformation;
+
+ public:
+ /// constructor
+ TransformPrimitive2D(
+ const basegfx::B2DHomMatrix& rTransformation,
+ const Primitive2DContainer& rChildren);
+
+ /// data read access
+ const basegfx::B2DHomMatrix& getTransformation() const { return maTransformation; }
+
+ /// compare operator
+ virtual bool operator==(const BasePrimitive2D& rPrimitive) const override;
+
+ /// get range
+ virtual basegfx::B2DRange getB2DRange(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: */