Line data    Source code

       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 _CPPCANVAS_CANVAS_HXX
      21             : #define _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             : namespace rtl
      30             : {
      31             :     class OUString;
      32             : }
      33             : 
      34             : namespace basegfx
      35             : {
      36             :     class B2DHomMatrix;
      37             :     class B2DPolyPolygon;
      38             : }
      39             : 
      40             : namespace com { namespace sun { namespace star { namespace rendering
      41             : {
      42             :     class  XCanvas;
      43             :     struct ViewState;
      44             : } } } }
      45             : 
      46             : 
      47             : /* Definition of BitmapCanvas */
      48             : 
      49             : namespace cppcanvas
      50             : {
      51             :     class PolyPolygon;
      52             :     class Canvas;
      53             : 
      54             :     // forward declaration, since PolyPolygon also references Canvas
      55             :     typedef ::boost::shared_ptr< PolyPolygon > PolyPolygonSharedPtr;
      56             : 
      57             :     // forward declaration, since cloneCanvas() also references Canvas
      58             :     typedef ::boost::shared_ptr< Canvas > CanvasSharedPtr;
      59             : 
      60             :     /** Canvas interface
      61             :      */
      62             :     class Canvas
      63             :     {
      64             :     public:
      65             :         enum
      66             :         {
      67             :             /** Extra pixel used when canvas anti-aliases.
      68             : 
      69             :                 Enlarge the bounding box of drawing primitives by this
      70             :                 amount in both dimensions, and on both sides of the
      71             :                 bounds, to account for extra pixel touched outside the
      72             :                 actual primitive bounding box, when the canvas
      73             :                 performs anti-aliasing.
      74             :              */
      75             :             ANTIALIASING_EXTRA_SIZE=2
      76             :         };
      77             : 
      78           0 :         virtual ~Canvas() {}
      79             : 
      80             :         virtual void                             setTransformation( const ::basegfx::B2DHomMatrix& rMatrix ) = 0;
      81             :         virtual ::basegfx::B2DHomMatrix          getTransformation() const = 0;
      82             : 
      83             :         virtual void                             setClip( const ::basegfx::B2DPolyPolygon& rClipPoly ) = 0;
      84             :         virtual void                             setClip() = 0;
      85             : 
      86             :         /** Get current clip
      87             : 
      88             :             @return NULL, if no clip is set, otherwise the current clip poly-polygon
      89             :          */
      90             :         virtual ::basegfx::B2DPolyPolygon const* getClip() const = 0;
      91             : 
      92             :         virtual FontSharedPtr                    createFont( const ::rtl::OUString& rFontName, const double& rCellSize ) const = 0;
      93             : 
      94             :         virtual ColorSharedPtr                   createColor() const = 0;
      95             : 
      96             :         virtual CanvasSharedPtr                  clone() const = 0;
      97             :         virtual void                             clear() const = 0;
      98             : 
      99             :         // this should be considered private. if RTTI gets enabled
     100             :         // someday, remove that to a separate interface
     101             :         virtual ::com::sun::star::uno::Reference<
     102             :             ::com::sun::star::rendering::XCanvas >          getUNOCanvas() const = 0;
     103             :         virtual ::com::sun::star::rendering::ViewState      getViewState() const = 0;
     104             :     };
     105             : 
     106             : }
     107             : 
     108             : #endif /* _CPPCANVAS_CANVAS_HXX */
     109             : 
     110             : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */