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       1             : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
       2             : /*
       3             :  * This file is part of the LibreOffice project.
       4             :  *
       5             :  * This Source Code Form is subject to the terms of the Mozilla Public
       6             :  * License, v. 2.0. If a copy of the MPL was not distributed with this
       7             :  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
       8             :  *
       9             :  * This file incorporates work covered by the following license notice:
      10             :  *
      11             :  *   Licensed to the Apache Software Foundation (ASF) under one or more
      12             :  *   contributor license agreements. See the NOTICE file distributed
      13             :  *   with this work for additional information regarding copyright
      14             :  *   ownership. The ASF licenses this file to you under the Apache
      15             :  *   License, Version 2.0 (the "License"); you may not use this file
      16             :  *   except in compliance with the License. You may obtain a copy of
      17             :  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
      18             :  */
      19             : 
      20             : #ifndef INCLUDED_CPPCANVAS_CANVAS_HXX
      21             : #define INCLUDED_CPPCANVAS_CANVAS_HXX
      22             : 
      23             : #include <com/sun/star/uno/Reference.hxx>
      24             : 
      25             : #include <boost/shared_ptr.hpp>
      26             : #include <cppcanvas/font.hxx>
      27             : #include <cppcanvas/color.hxx>
      28             : 
      29             : 
      30             : namespace basegfx
      31             : {
      32             :     class B2DHomMatrix;
      33             :     class B2DPolyPolygon;
      34             : }
      35             : 
      36             : namespace com { namespace sun { namespace star { namespace rendering
      37             : {
      38             :     class  XCanvas;
      39             :     struct ViewState;
      40             : } } } }
      41             : 
      42             : 
      43             : /* Definition of BitmapCanvas */
      44             : 
      45             : namespace cppcanvas
      46             : {
      47             :     class PolyPolygon;
      48             :     class Canvas;
      49             : 
      50             :     // forward declaration, since tools::PolyPolygon also references Canvas
      51             :     typedef ::boost::shared_ptr< PolyPolygon > PolyPolygonSharedPtr;
      52             : 
      53             :     // forward declaration, since cloneCanvas() also references Canvas
      54             :     typedef ::boost::shared_ptr< Canvas > CanvasSharedPtr;
      55             : 
      56             :     /** Canvas interface
      57             :      */
      58           2 :     class Canvas
      59             :     {
      60             :     public:
      61             :         enum
      62             :         {
      63             :             /** Extra pixel used when canvas anti-aliases.
      64             : 
      65             :                 Enlarge the bounding box of drawing primitives by this
      66             :                 amount in both dimensions, and on both sides of the
      67             :                 bounds, to account for extra pixel touched outside the
      68             :                 actual primitive bounding box, when the canvas
      69             :                 performs anti-aliasing.
      70             :              */
      71             :             ANTIALIASING_EXTRA_SIZE=2
      72             :         };
      73             : 
      74           2 :         virtual ~Canvas() {}
      75             : 
      76             :         virtual void                             setTransformation( const ::basegfx::B2DHomMatrix& rMatrix ) = 0;
      77             :         virtual ::basegfx::B2DHomMatrix          getTransformation() const = 0;
      78             : 
      79             :         virtual void                             setClip( const ::basegfx::B2DPolyPolygon& rClipPoly ) = 0;
      80             :         virtual void                             setClip() = 0;
      81             : 
      82             :         /** Get current clip
      83             : 
      84             :             @return NULL, if no clip is set, otherwise the current clip poly-polygon
      85             :          */
      86             :         virtual ::basegfx::B2DPolyPolygon const* getClip() const = 0;
      87             : 
      88             :         virtual FontSharedPtr                    createFont( const OUString& rFontName, const double& rCellSize ) const = 0;
      89             : 
      90             :         virtual ColorSharedPtr                   createColor() const = 0;
      91             : 
      92             :         virtual CanvasSharedPtr                  clone() const = 0;
      93             :         virtual void                             clear() const = 0;
      94             : 
      95             :         // this should be considered private. if RTTI gets enabled
      96             :         // someday, remove that to a separate interface
      97             :         virtual ::com::sun::star::uno::Reference<
      98             :             ::com::sun::star::rendering::XCanvas >          getUNOCanvas() const = 0;
      99             :         virtual ::com::sun::star::rendering::ViewState      getViewState() const = 0;
     100             :     };
     101             : 
     102             : }
     103             : 
     104             : #endif // INCLUDED_CPPCANVAS_CANVAS_HXX
     105             : 
     106             : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */