drawinglayer/source/tools/emfpimage.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 #include <vcl/graphicfilter.hxx>
  20 #include <sal/log.hxx>
  21 #include "emfpimage.hxx"
  22
  23 namespace emfplushelper
  24 {
  25     void EMFPImage::Read(SvMemoryStream &s, sal_uInt32 dataSize, bool bUseWholeStream)
  26     {
  27         sal_uInt32 header, bitmapType;
  28         s.ReadUInt32(header).ReadUInt32(type);
  29         SAL_INFO("drawinglayer.emf", "EMF+\timage\nEMF+\theader: 0x" << std::hex << header << " type: " << type << std::dec);
  30
  31         if (ImageDataTypeBitmap == type)
  32         {
  33             // bitmap
  34             s.ReadInt32(width).ReadInt32(height).ReadInt32(stride).ReadUInt32(pixelFormat).ReadUInt32(bitmapType);
  35             SAL_INFO("drawinglayer.emf", "EMF+\tbitmap width: " << width << " height: " << height << " stride: " << stride << " pixelFormat: 0x" << std::hex << pixelFormat << " bitmapType: 0x" << bitmapType << std::dec);
  36
  37             if ((bitmapType != 0) || (width == 0))
  38             {
  39                 // non native formats
  40                 GraphicFilter filter;
  41                 filter.ImportGraphic(graphic, u"", s);
  42                 SAL_INFO("drawinglayer.emf", "EMF+\tbitmap width: " << graphic.GetSizePixel().Width() << " height: " << graphic.GetSizePixel().Height());
  43             }
  44         }
  45         else if (ImageDataTypeMetafile == type)
  46         {
  47             // metafile
  48             sal_uInt32 mfType, mfSize;
  49             s.ReadUInt32(mfType).ReadUInt32(mfSize);
  50
  51             if (bUseWholeStream)
  52                 dataSize = s.remainingSize();
  53             else
  54                 dataSize -= 16;
  55
  56             SAL_INFO("drawinglayer.emf", "EMF+\tmetafile type: " << mfType << " dataSize: " << mfSize << " real size calculated from record dataSize: " << dataSize);
  57
  58             GraphicFilter filter;
  59             // workaround buggy metafiles, which have wrong mfSize set (n#705956 for example)
  60             SvMemoryStream mfStream(const_cast<char *>(static_cast<char const *>(s.GetData()) + s.Tell()), dataSize, StreamMode::READ);
  61             filter.ImportGraphic(graphic, u"", mfStream);
  62
  63             // debug code - write the stream to debug file /tmp/emf-stream.emf
  64 #if OSL_DEBUG_LEVEL > 1
  65             mfStream.Seek(0);
  66             static sal_Int32 emfp_debug_stream_number = 0;
  67             OUString emfp_debug_filename = "/tmp/emf-embedded-stream" +
  68                 OUString::number(emfp_debug_stream_number++) + ".emf";
  69
  70             SvFileStream file(emfp_debug_filename, StreamMode::WRITE | StreamMode::TRUNC);
  71
  72             mfStream.WriteStream(file);
  73             file.Flush();
  74             file.Close();
  75 #endif
  76         }
  77     }
  78 }
  79
  80 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */