xmloff/source/core/xmlmultiimagehelper.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 #include <xmloff/xmlmultiimagehelper.hxx>
  21 #include <rtl/ustring.hxx>
  22
  23 using namespace ::com::sun::star;
  24
  25 namespace
  26 {
  27     sal_uInt32 getQualityIndex(const OUString& rString)
  28     {
  29         sal_uInt32 nRetval(0);
  30
  31         // pixel formats first
  32         if(rString.endsWith(".bmp"))
  33         {
  34             return 10;
  35         }
  36         if(rString.endsWith(".gif"))
  37         {
  38             return 20;
  39         }
  40         if(rString.endsWith(".jpg"))
  41         {
  42             return 30;
  43         }
  44         if(rString.endsWith(".png"))
  45         {
  46             return 40;
  47         }
  48
  49         // vector formats, prefer always
  50         if(rString.endsWith(".svm"))
  51         {
  52             return 1000;
  53         }
  54         if(rString.endsWith(".wmf"))
  55         {
  56             return 1010;
  57         }
  58         if(rString.endsWith(".emf"))
  59         {
  60             return 1020;
  61         }
  62         if(rString.endsWith(".svg"))
  63         {
  64             return 1030;
  65         }
  66
  67         return nRetval;
  68     }
  69 }
  70
  71 MultiImageImportHelper::MultiImageImportHelper()
  72 :   maImplContextVector(),
  73     mbSupportsMultipleContents(false)
  74 {
  75 }
  76
  77 MultiImageImportHelper::~MultiImageImportHelper()
  78 {
  79 }
  80
  81 SvXMLImportContextRef MultiImageImportHelper::solveMultipleImages()
  82 {
  83     SvXMLImportContextRef pContext;
  84     if(maImplContextVector.size() > 1)
  85     {
  86         // multiple child contexts were imported, decide which is the most valuable one
  87         // and remove the rest
  88         sal_uInt32 nIndexOfPreferred(maImplContextVector.size());
  89         sal_uInt32 nBestQuality(0), a(0);
  90
  91         for(a = 0; a < maImplContextVector.size(); a++)
  92         {
  93             const OUString aStreamURL(getGraphicURLFromImportContext(*maImplContextVector[a]));
  94             const sal_uInt32 nNewQuality(getQualityIndex(aStreamURL));
  95
  96             if(nNewQuality > nBestQuality)
  97             {
  98                 nBestQuality = nNewQuality;
  99                 nIndexOfPreferred = a;
 100             }
 101         }
 102
 103         // correct if needed, default is to use the last entry
 104         if(nIndexOfPreferred >= maImplContextVector.size())
 105         {
 106             nIndexOfPreferred = maImplContextVector.size() - 1;
 107         }
 108
 109         // Take out the most valuable one
 110         const std::vector< SvXMLImportContextRef >::iterator aRemove(maImplContextVector.begin() + nIndexOfPreferred);
 111         pContext = *aRemove;
 112         maImplContextVector.erase(aRemove);
 113
 114         // remove the rest from parent
 115         for(a = 0; a < maImplContextVector.size(); a++)
 116         {
 117             SvXMLImportContext& rCandidate = *maImplContextVector[a];
 118
 119             if(pContext)
 120             {
 121                 // #i124143# evtl. copy imported GluePoints before deprecating
 122                 // this graphic and context
 123                 pContext->onDemandRescueUsefulDataFromTemporary(rCandidate);
 124             }
 125
 126             removeGraphicFromImportContext(rCandidate);
 127         }
 128         // re-insert it so that solveMultipleImages is idempotent
 129         maImplContextVector.clear();
 130         maImplContextVector.push_back(pContext);
 131     }
 132     else if (maImplContextVector.size() == 1)
 133     {
 134         pContext = maImplContextVector.front();
 135     }
 136
 137     return pContext;
 138 }
 139
 140 void MultiImageImportHelper::addContent(const SvXMLImportContext& rSvXMLImportContext)
 141 {
 142     maImplContextVector.push_back(SvXMLImportContextRef(const_cast< SvXMLImportContext* >(&rSvXMLImportContext)));
 143 }
 144
 145 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */