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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 { namespace sun { namespace star { namespace 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: */
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