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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 <sal/config.h>
+#include <o3tl/cow_wrapper.hxx>
+
+// predefines
+
+namespace drawinglayer::geometry
+{
+class ImpViewInformation2D;
+}
+
+namespace basegfx
+{
+class B2DHomMatrix;
+class B2DRange;
+}
+
+namespace com::sun::star::beans
+{
+struct PropertyValue;
+}
+
+namespace com::sun::star::drawing
+{
+class XDrawPage;
+}
+
+namespace com::sun::star::uno
+{
+template <class interface_type> class Reference;
+template <typename> class Sequence;
+}
+
+namespace drawinglayer::geometry
+{
+/** ViewInformation2D class
+
+ This class holds all view-relevant information for a 2d geometry.
+ The most used data is for convenience offered directly using basegfx tooling classes.
+*/
+class DRAWINGLAYERCORE_DLLPUBLIC ViewInformation2D
+{
+public:
+ typedef o3tl::cow_wrapper<ImpViewInformation2D, o3tl::ThreadSafeRefCountingPolicy> ImplType;
+
+private:
+ /// pointer to private implementation class
+ ImplType mpViewInformation2D;
+
+public:
+ /** Constructor: Create a ViewInformation2D
+
+ @param rObjectTransformation
+ The Transformation from Object to World coordinates (normally logic coordinates).
+
+ @param rViewTransformation
+ The Transformation from World to View coordinates (normally logic coordinates
+ to discrete units, e.g. pixels).
+
+ @param rViewport
+ The visible part of the view in World coordinates. If empty (getViewport().isEmpty())
+ everything is visible. The data is in World coordinates.
+
+ @param rxDrawPage
+ The currently displayed page. This information is needed e.g. due to existing PageNumber
+ fields which need to be interpreted.
+
+ @param fViewTime
+ The time the view is defined for. Default is 0.0. This parameter is used e.g. for
+ animated objects
+
+ @param rReducedDisplayQuality
+ */
+ ViewInformation2D(const basegfx::B2DHomMatrix& rObjectTransformation,
+ const basegfx::B2DHomMatrix& rViewTransformation,
+ const basegfx::B2DRange& rViewport,
+ const css::uno::Reference<css::drawing::XDrawPage>& rxDrawPage,
+ double fViewTime, bool bReducedDisplayQuality = false);
+
+ /// default (empty) constructor
+ ViewInformation2D();
+
+ /// copy constructor
+ ViewInformation2D(const ViewInformation2D&);
+
+ ViewInformation2D(ViewInformation2D&&);
+
+ /// destructor
+ ~ViewInformation2D();
+
+ /// assignment operator
+ ViewInformation2D& operator=(const ViewInformation2D&);
+ ViewInformation2D& operator=(ViewInformation2D&&);
+
+ /// compare operators
+ bool operator==(const ViewInformation2D& rCandidate) const;
+ bool operator!=(const ViewInformation2D& rCandidate) const { return !operator==(rCandidate); }
+
+ /// data access
+ const basegfx::B2DHomMatrix& getObjectTransformation() const;
+ const basegfx::B2DHomMatrix& getViewTransformation() const;
+ /// Empty viewport means everything is visible.
+ const basegfx::B2DRange& getViewport() const;
+ double getViewTime() const;
+ const css::uno::Reference<css::drawing::XDrawPage>& getVisualizedPage() const;
+
+ /// On-demand prepared Object to View transformation and its inverse for convenience
+ const basegfx::B2DHomMatrix& getObjectToViewTransformation() const;
+ const basegfx::B2DHomMatrix& getInverseObjectToViewTransformation() const;
+
+ /// On-demand prepared Viewport in discrete units for convenience
+ /// Empty viewport means everything is visible.
+ const basegfx::B2DRange& getDiscreteViewport() const;
+
+ /** support reduced DisplayQuality, PropertyName is 'ReducedDisplayQuality'. This
+ is used e.g. to allow to lower display quality for OverlayPrimitives and
+ may lead to simpler decompositions in the local create2DDecomposition
+ implementations of the primitives
+ */
+ bool getReducedDisplayQuality() const;
+};
+
+DRAWINGLAYERCORE_DLLPUBLIC ViewInformation2D
+createViewInformation2D(const css::uno::Sequence<css::beans::PropertyValue>& rViewParameters);
+
+} // end of namespace drawinglayer::geometry
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */