svtools/source/urlobj/inetimg.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 <osl/thread.h>
  21 #include <sot/formats.hxx>
  22 #include <tools/stream.hxx>
  23
  24 #include <svtools/inetimg.hxx>
  25
  26 static const sal_Unicode TOKEN_SEPARATOR = '\001';
  27
  28 bool INetImage::Write( SvStream& rOStm, SotClipboardFormatId nFormat ) const
  29 {
  30     bool bRet = false;
  31     switch( nFormat )
  32     {
  33     case SotClipboardFormatId::INET_IMAGE:
  34         {
  35             OUString sString;
  36             (sString += aImageURL ) += OUString(TOKEN_SEPARATOR);
  37             (sString += aTargetURL ) += OUString(TOKEN_SEPARATOR);
  38             (sString += aTargetFrame ) += OUString(TOKEN_SEPARATOR);
  39             (sString += aAlternateText ) += OUString(TOKEN_SEPARATOR);
  40             sString += OUString::number( aSizePixel.Width() );
  41             sString += OUString(TOKEN_SEPARATOR);
  42             sString += OUString::number( aSizePixel.Height() );
  43
  44             OString sOut(OUStringToOString(sString,
  45                 RTL_TEXTENCODING_UTF8));
  46
  47             rOStm.Write(sOut.getStr(), sOut.getLength());
  48             static const sal_Char aEndChar[2] = { 0 };
  49             rOStm.Write( aEndChar, sizeof( aEndChar ));
  50             bRet = 0 == rOStm.GetError();
  51         }
  52         break;
  53
  54     case SotClipboardFormatId::NETSCAPE_IMAGE:
  55         break;
  56     default: break;
  57     }
  58     return bRet;
  59 }
  60
  61 bool INetImage::Read( SvStream& rIStm, SotClipboardFormatId nFormat )
  62 {
  63     bool bRet = false;
  64     switch( nFormat )
  65     {
  66     case SotClipboardFormatId::INET_IMAGE:
  67         {
  68             OUString sINetImg = read_zeroTerminated_uInt8s_ToOUString(rIStm, RTL_TEXTENCODING_UTF8);
  69             sal_Int32 nStart = 0;
  70             aImageURL = sINetImg.getToken( 0, TOKEN_SEPARATOR, nStart );
  71             aTargetURL = sINetImg.getToken( 0, TOKEN_SEPARATOR, nStart );
  72             aTargetFrame = sINetImg.getToken( 0, TOKEN_SEPARATOR, nStart );
  73             aAlternateText = sINetImg.getToken( 0, TOKEN_SEPARATOR, nStart );
  74             aSizePixel.Width() = sINetImg.getToken( 0, TOKEN_SEPARATOR,
  75                                                     nStart ).toInt32();
  76             aSizePixel.Height() = sINetImg.getToken( 0, TOKEN_SEPARATOR,
  77                                                     nStart ).toInt32();
  78             bRet = !sINetImg.isEmpty();
  79         }
  80         break;
  81
  82     case SotClipboardFormatId::NETSCAPE_IMAGE:
  83         {
  84 /*
  85     --> structure size  MUST - alignment of 4!
  86     int     iSize;              // size of all data, including variable length strings
  87     sal_Bool    bIsMap;             // For server side maps
  88     sal_Int32   iWidth;             // Fixed size data correspond to fields in LO_ImageDataStruct
  89     sal_Int32   iHeight;            //   and EDT_ImageData
  90     sal_Int32   iHSpace;
  91     sal_Int32   iVSpace;
  92     sal_Int32   iBorder;
  93     int     iLowResOffset;      // Offsets into string_data. If 0, string is NULL (not used)
  94     int     iAltOffset;         // (alternate text?)
  95     int     iAnchorOffset;      // HREF in image
  96     int     iExtraHTML_Offset;  // Extra HTML (stored in CImageElement)
  97     sal_Char pImageURL[1];      // Append all variable-length strings starting here
  98 */
  99             rtl_TextEncoding eSysCSet = osl_getThreadTextEncoding();
 100             sal_Int32 nVal, nAnchorOffset, nAltOffset, nFilePos;
 101
 102             nFilePos = rIStm.Tell();
 103             // skip over iSize (int), bIsMao ( sal_Bool ) alignment of 4 !!!!
 104             rIStm.SeekRel( 8 );
 105             rIStm.ReadInt32( nVal );  aSizePixel.Width() = nVal;
 106             rIStm.ReadInt32( nVal );  aSizePixel.Height() = nVal;
 107             // skip over iHSpace, iVSpace, iBorder, iLowResOffset
 108             rIStm.SeekRel( 3 * sizeof( sal_Int32 ) + sizeof( int ) );
 109             rIStm.ReadInt32( nAltOffset );
 110             rIStm.ReadInt32( nAnchorOffset );
 111             // skip over iExtraHTML_Offset
 112             rIStm.SeekRel( sizeof( int ) );
 113
 114             aImageURL = read_zeroTerminated_uInt8s_ToOUString(rIStm, eSysCSet);
 115             if( nAltOffset )
 116             {
 117                 rIStm.Seek( nFilePos + nAltOffset );
 118                 aAlternateText = read_zeroTerminated_uInt8s_ToOUString(rIStm, eSysCSet);
 119             }
 120             else if( !aAlternateText.isEmpty() )
 121                 aAlternateText.clear();
 122
 123             if( nAnchorOffset )
 124             {
 125                 rIStm.Seek( nFilePos + nAnchorOffset );
 126                 aTargetURL = read_zeroTerminated_uInt8s_ToOUString(rIStm, eSysCSet);
 127             }
 128             else if( !aTargetURL.isEmpty() )
 129                 aTargetURL.clear();
 130
 131             bRet = 0 == rIStm.GetError();
 132         }
 133         break;
 134     default: break;
 135     }
 136     return bRet;
 137 }
 138
 139 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */