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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 INCLUDED_CPPCANVAS_CANVAS_HXX
+#define INCLUDED_CPPCANVAS_CANVAS_HXX
+
+#include <com/sun/star/uno/Reference.hxx>
+#include <memory>
+
+namespace basegfx
+{
+ class B2DHomMatrix;
+ class B2DPolyPolygon;
+}
+
+namespace com::sun::star::rendering
+{
+ class XCanvas;
+ struct ViewState;
+}
+
+
+/* Definition of BitmapCanvas */
+
+namespace cppcanvas
+{
+ class PolyPolygon;
+ class Canvas;
+
+ // forward declaration, since tools::PolyPolygon also references Canvas
+ typedef std::shared_ptr< PolyPolygon > PolyPolygonSharedPtr;
+
+ // forward declaration, since cloneCanvas() also references Canvas
+ typedef std::shared_ptr< Canvas > CanvasSharedPtr;
+
+ /** Canvas interface
+ */
+ class Canvas
+ {
+ public:
+ /** Extra pixel used when canvas anti-aliases.
+
+ Enlarge the bounding box of drawing primitives by this
+ amount in both dimensions, and on both sides of the
+ bounds, to account for extra pixel touched outside the
+ actual primitive bounding box, when the canvas
+ performs anti-aliasing.
+ */
+ static constexpr auto ANTIALIASING_EXTRA_SIZE=2;
+
+ Canvas() = default;
+ Canvas(Canvas const &) = default;
+ Canvas(Canvas &&) = default;
+ Canvas & operator =(Canvas const &) = default;
+#if !(defined __GNUC__ && !defined __clang__ && __GNUC__ == 8) // bogus -Werror=virtual-move-assign
+ Canvas & operator =(Canvas &&) = default;
+#endif
+
+ virtual ~Canvas() {}
+
+ virtual void setTransformation( const ::basegfx::B2DHomMatrix& rMatrix ) = 0;
+ virtual ::basegfx::B2DHomMatrix getTransformation() const = 0;
+
+ virtual void setClip( const ::basegfx::B2DPolyPolygon& rClipPoly ) = 0;
+ virtual void setClip() = 0;
+
+ /** Get current clip
+
+ @return NULL, if no clip is set, otherwise the current clip poly-polygon
+ */
+ virtual ::basegfx::B2DPolyPolygon const* getClip() const = 0;
+
+ virtual CanvasSharedPtr clone() const = 0;
+ virtual void clear() const = 0;
+
+ // this should be considered private. if RTTI gets enabled
+ // someday, remove that to a separate interface
+ virtual css::uno::Reference<
+ css::rendering::XCanvas > getUNOCanvas() const = 0;
+ virtual css::rendering::ViewState getViewState() const = 0;
+ };
+
+}
+
+#endif // INCLUDED_CPPCANVAS_CANVAS_HXX
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */