vcl/inc/region.h

   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 _SV_REGION_H
  21 #define _SV_REGION_H
  22
  23 #include <vcl/regband.hxx>
  24 #include <tools/poly.hxx>
  25 #include <vcl/region.hxx>
  26
  27 // -----------------
  28 // - Hilfsmethoden -
  29 // -----------------
  30
  31 #ifdef DBG_UTIL
  32 const char* ImplDbgTestRegion( const void* pObj );
  33 #endif
  34
  35 // --------------------
  36 // - ImplRegionHandle -
  37 // --------------------
  38
  39 struct ImplRegionHandle
  40 {
  41     Region*             mpRegion;
  42     ImplRegionBand*     mpCurrRectBand;
  43     ImplRegionBandSep*  mpCurrRectBandSep;
  44     sal_Bool                mbFirst;
  45 };
  46
  47 // ------------------
  48 // - ImplRegionInfo -
  49 // ------------------
  50
  51 struct ImplRegionInfo
  52 {
  53     void*               mpVoidCurrRectBand;
  54     void*               mpVoidCurrRectBandSep;
  55 };
  56
  57 // --------------
  58 // - ImplRegion -
  59 // --------------
  60
  61 struct ImplRegionBase
  62 {
  63 public:
  64     ImplRegionBase( int nCount = 1 ); // TODO: replace manual refcounting
  65     virtual ~ImplRegionBase();
  66 public:
  67     sal_uIntPtr             mnRefCount;
  68     sal_uIntPtr             mnRectCount;
  69     PolyPolygon*        mpPolyPoly;
  70     basegfx::B2DPolyPolygon* mpB2DPolyPoly;
  71 };
  72
  73 class ImplRegion : public ImplRegionBase
  74 {
  75     friend class Region;
  76
  77 private:
  78     ImplRegionBand*     mpFirstBand;        // root of the list with y-bands
  79     ImplRegionBand*     mpLastCheckedBand;
  80
  81 public:
  82                         ImplRegion();
  83                         ImplRegion( const PolyPolygon& rPolyPoly );
  84                         ImplRegion( const basegfx::B2DPolyPolygon& );
  85                         ImplRegion( const ImplRegion& rImplRegion );
  86                         ~ImplRegion();
  87
  88     ImplRegionBand*     ImplGetFirstRegionBand() const { return mpFirstBand; }
  89     PolyPolygon*        ImplGetPolyPoly() const { return mpPolyPoly; }
  90
  91     void                CreateBandRange( long nYTop, long nYBottom );
  92     void                InsertBands( long nYTop, long nYBottom );
  93     sal_Bool                InsertSingleBand( ImplRegionBand* mpImplRegionBand,
  94                                           long nYBandPosition );
  95     sal_Bool                InsertLine( const Point & rFirstPoint,
  96                                     const Point & rSecondPoint,
  97                                     long nLineID );
  98     sal_Bool                InsertPoint( const Point &rPoint,
  99                                      long nLineID,
 100                                      sal_Bool bEndPoint, LineType eLineType );
 101
 102     /** Insert one band either after another band or as the first or only
 103         band.  Both the forward as well as the backward links are updated.
 104         @param pPreviousBand
 105             When <NULL/> then pBandToInsert is inserted as first band or as
 106             only band when there are no other bands.
 107             When not <NULL/> then pBandToInsert is inserted directly after
 108             pPreviousBand.
 109         @param pBandToInsert
 110             The band to insert.
 111     */
 112     void                InsertBand (ImplRegionBand* pPreviousBand,
 113                                     ImplRegionBand* pBandToInsert);
 114
 115     void                Union( long nLeft, long nTop, long nRight, long nBottom );
 116     void                Exclude( long nLeft, long nTop, long nRight, long nBottom );
 117     void                XOr( long nLeft, long nTop, long nRight, long nBottom );
 118
 119                         // remove emtpy rects
 120     sal_Bool                OptimizeBandList();
 121
 122     friend SvStream&    operator>>( SvStream& rIStm, Region& rRegion );
 123     friend SvStream&    operator<<( SvStream& rOStm, const Region& rRegion );
 124 };
 125
 126 #endif  // _SV_REGION_H
 127
 128 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */