LibreOffice Module vcl (master)  1
inetimg.cxx
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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 <vcl/inetimg.hxx>
25 #include <o3tl/string_view.hxx>
26 
28 
29 void INetImage::Write( SvStream& rOStm, SotClipboardFormatId nFormat ) const
30 {
31  switch( nFormat )
32  {
33  case SotClipboardFormatId::INET_IMAGE:
34  {
35  OUString sString(
36  aImageURL + OUStringChar(TOKEN_SEPARATOR) + aTargetURL
37  + OUStringChar(TOKEN_SEPARATOR) + aTargetFrame
38  + OUStringChar(TOKEN_SEPARATOR) /* + aAlternateText */
39  + OUStringChar(TOKEN_SEPARATOR)
40  + OUString::number(aSizePixel.Width())
41  + OUStringChar(TOKEN_SEPARATOR)
42  + OUString::number(aSizePixel.Height()));
43 
44  OString sOut(OUStringToOString(sString,
45  RTL_TEXTENCODING_UTF8));
46 
47  rOStm.WriteBytes(sOut.getStr(), sOut.getLength());
48  static const char aEndChar[2] = { 0 };
49  rOStm.WriteBytes(aEndChar, sizeof(aEndChar));
50  }
51  break;
52 
53  case SotClipboardFormatId::NETSCAPE_IMAGE:
54  break;
55  default: break;
56  }
57 }
58 
60 {
61  bool bRet = false;
62  switch( nFormat )
63  {
64  case SotClipboardFormatId::INET_IMAGE:
65  {
66  OUString sINetImg = read_zeroTerminated_uInt8s_ToOUString(rIStm, RTL_TEXTENCODING_UTF8);
67  sal_Int32 nStart = 0;
68  aImageURL = sINetImg.getToken( 0, TOKEN_SEPARATOR, nStart );
69  aTargetURL = sINetImg.getToken( 0, TOKEN_SEPARATOR, nStart );
70  aTargetFrame = sINetImg.getToken( 0, TOKEN_SEPARATOR, nStart );
71  /*aAlternateText =*/ sINetImg.getToken( 0, TOKEN_SEPARATOR, nStart );
73  nStart )) );
75  nStart )) );
76  bRet = !sINetImg.isEmpty();
77  }
78  break;
79 
80  case SotClipboardFormatId::NETSCAPE_IMAGE:
81  {
82 /*
83  --> structure size MUST - alignment of 4!
84  int iSize; // size of all data, including variable length strings
85  sal_Bool bIsMap; // For server side maps
86  sal_Int32 iWidth; // Fixed size data correspond to fields in LO_ImageDataStruct
87  sal_Int32 iHeight; // and EDT_ImageData
88  sal_Int32 iHSpace;
89  sal_Int32 iVSpace;
90  sal_Int32 iBorder;
91  int iLowResOffset; // Offsets into string_data. If 0, string is NULL (not used)
92  int iAltOffset; // (alternate text?)
93  int iAnchorOffset; // HREF in image
94  int iExtraHTML_Offset; // Extra HTML (stored in CImageElement)
95  char pImageURL[1]; // Append all variable-length strings starting here
96 */
97  rtl_TextEncoding eSysCSet = osl_getThreadTextEncoding();
98  sal_Int32 nVal, nAnchorOffset, nAltOffset;
99  sal_uInt64 nFilePos;
100 
101  nFilePos = rIStm.Tell();
102  // skip over iSize (int), bIsMao ( sal_Bool ) alignment of 4 !!!!
103  rIStm.SeekRel( 8 );
104  rIStm.ReadInt32( nVal ); aSizePixel.setWidth( nVal );
105  rIStm.ReadInt32( nVal ); aSizePixel.setHeight( nVal );
106  // skip over iHSpace, iVSpace, iBorder, iLowResOffset
107  rIStm.SeekRel( 3 * sizeof( sal_Int32 ) + sizeof( int ) );
108  rIStm.ReadInt32( nAltOffset );
109  rIStm.ReadInt32( nAnchorOffset );
110  // skip over iExtraHTML_Offset
111  rIStm.SeekRel( sizeof( int ) );
112 
114  if( nAltOffset )
115  {
116  rIStm.Seek( nFilePos + nAltOffset );
117  /*aAlternateText =*/ read_zeroTerminated_uInt8s_ToOUString(rIStm, eSysCSet);
118  }
119 
120  if( nAnchorOffset )
121  {
122  rIStm.Seek( nFilePos + nAnchorOffset );
124  }
125  else if( !aTargetURL.isEmpty() )
126  aTargetURL.clear();
127 
128  bRet = ERRCODE_NONE == rIStm.GetError();
129  }
130  break;
131  default: break;
132  }
133  return bRet;
134 }
135 
136 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
void setWidth(tools::Long nWidth)
OUString aImageURL
Definition: inetimg.hxx:29
sal_uInt64 Seek(sal_uInt64 nPos)
std::basic_string_view< charT, traits > getToken(std::basic_string_view< charT, traits > sv, charT delimiter, std::size_t &position)
const sal_Unicode TOKEN_SEPARATOR
Definition: inetimg.cxx:27
sal_uInt64 SeekRel(sal_Int64 nPos)
constexpr tools::Long Width() const
sal_uInt16 sal_Unicode
OUString aTargetFrame
Definition: inetimg.hxx:31
OUString aTargetURL
Definition: inetimg.hxx:30
ErrCode GetError() const
SotClipboardFormatId
OString OUStringToOString(std::u16string_view str, ConnectionSettings const *settings)
OUString read_zeroTerminated_uInt8s_ToOUString(SvStream &rStream, rtl_TextEncoding eEnc)
std::size_t WriteBytes(const void *pData, std::size_t nSize)
sal_Int32 toInt32(std::u16string_view str, sal_Int16 radix=10)
SvStream & ReadInt32(sal_Int32 &rInt32)
#define ERRCODE_NONE
Definition: errcode.hxx:196
constexpr tools::Long Height() const
sal_uInt64 Tell() const
void setHeight(tools::Long nHeight)
bool Read(SvStream &rIStm, SotClipboardFormatId nFormat)
Definition: inetimg.cxx:59
Size aSizePixel
Definition: inetimg.hxx:32
void Write(SvStream &rOStm, SotClipboardFormatId nFormat) const
Definition: inetimg.cxx:29