svl/source/items/whiter.cxx

   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
  21 #include <svl/whiter.hxx>
  22 #include <svl/itemset.hxx>
  23
  24 DBG_NAME(SfxWhichIter)
  25
  26 // -----------------------------------------------------------------------
  27
  28 SfxWhichIter::SfxWhichIter( const SfxItemSet& rSet, sal_uInt16 nFromWh, sal_uInt16 nToWh ):
  29     pRanges(rSet.GetRanges()),
  30     pStart(rSet.GetRanges()),
  31     nOfst(0), nFrom(nFromWh), nTo(nToWh)
  32 {
  33     DBG_CTOR(SfxWhichIter, 0);
  34     if ( nFrom > 0 )
  35         FirstWhich();
  36 }
  37
  38 // -----------------------------------------------------------------------
  39
  40 SfxWhichIter::~SfxWhichIter()
  41 {
  42     DBG_DTOR(SfxWhichIter, 0);
  43 }
  44
  45 // -----------------------------------------------------------------------
  46
  47 sal_uInt16 SfxWhichIter::NextWhich()
  48 {
  49     DBG_CHKTHIS(SfxWhichIter, 0);
  50     while ( 0 != *pRanges )
  51     {
  52         const sal_uInt16 nLastWhich = *pRanges + nOfst;
  53         ++nOfst;
  54         if (*(pRanges+1) == nLastWhich)
  55         {
  56             pRanges += 2;
  57             nOfst = 0;
  58         }
  59         sal_uInt16 nWhich = *pRanges + nOfst;
  60         if ( 0 == nWhich || ( nWhich >= nFrom && nWhich <= nTo ) )
  61             return nWhich;
  62     }
  63     return 0;
  64 }
  65
  66 // -----------------------------------------------------------------------
  67
  68 sal_uInt16 SfxWhichIter::FirstWhich()
  69 {
  70     DBG_CHKTHIS(SfxWhichIter, 0);
  71     pRanges = pStart;
  72     nOfst = 0;
  73     if ( *pRanges >= nFrom && *pRanges <= nTo )
  74         return *pRanges;
  75     return NextWhich();
  76 }
  77
  78 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */