/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */

/*

 * This file is part of the LibreOffice project.

 *

 * This Source Code Form is subject to the terms of the Mozilla Public

 * License, v. 2.0. If a copy of the MPL was not distributed with this

 * file, You can obtain one at http://mozilla.org/MPL/2.0/.

 *

 * This file incorporates work covered by the following license notice:

 *

 *   Licensed to the Apache Software Foundation (ASF) under one or more

 *   contributor license agreements. See the NOTICE file distributed

 *   with this work for additional information regarding copyright

 *   ownership. The ASF licenses this file to you under the Apache

 *   License, Version 2.0 (the "License"); you may not use this file

 *   except in compliance with the License. You may obtain a copy of

 *   the License at http://www.apache.org/licenses/LICENSE-2.0 .

 */

#include <vcl/graphicfilter.hxx>

#include <sal/log.hxx>

#include "emfpimage.hxx"

namespace emfplushelper

{

    void EMFPImage::Read(SvMemoryStream &s, sal_uInt32 dataSize, bool bUseWholeStream)

    {

        sal_uInt32 header, bitmapType;

        s.ReadUInt32(header).ReadUInt32(type);

        SAL_INFO("drawinglayer.emf", "EMF+\timage\nEMF+\theader: 0x" << std::hex << header << " type: " << type << std::dec);

        if (ImageDataTypeBitmap == type)

        {

            // bitmap

            s.ReadInt32(width).ReadInt32(height).ReadInt32(stride).ReadUInt32(pixelFormat).ReadUInt32(bitmapType);

            SAL_INFO("drawinglayer.emf", "EMF+\tbitmap width: " << width << " height: " << height << " stride: " << stride << " pixelFormat: 0x" << std::hex << pixelFormat << " bitmapType: 0x" << bitmapType << std::dec);

            if ((bitmapType != 0) || (width == 0))

            {

                // non native formats

                GraphicFilter filter;

                filter.ImportGraphic(graphic, u"", s);

                SAL_INFO("drawinglayer.emf", "EMF+\tbitmap width: " << graphic.GetSizePixel().Width() << " height: " << graphic.GetSizePixel().Height());

            }

        }

        else if (ImageDataTypeMetafile == type)

        {

            // metafile

            sal_uInt32 mfType, mfSize;

            s.ReadUInt32(mfType).ReadUInt32(mfSize);

            if (bUseWholeStream)

                dataSize = s.remainingSize();

            else

                dataSize -= 16;

            SAL_INFO("drawinglayer.emf", "EMF+\tmetafile type: " << mfType << " dataSize: " << mfSize << " real size calculated from record dataSize: " << dataSize);

            GraphicFilter filter;

            // workaround buggy metafiles, which have wrong mfSize set (n#705956 for example)

            SvMemoryStream mfStream(const_cast<char *>(static_cast<char const *>(s.GetData()) + s.Tell()), dataSize, StreamMode::READ);

            filter.ImportGraphic(graphic, u"", mfStream);

            // debug code - write the stream to debug file /tmp/emf-stream.emf

#if OSL_DEBUG_LEVEL > 1

            mfStream.Seek(0);

            static sal_Int32 emfp_debug_stream_number = 0;

            OUString emfp_debug_filename = "/tmp/emf-embedded-stream" +

                OUString::number(emfp_debug_stream_number++) + ".emf";

            SvFileStream file(emfp_debug_filename, StreamMode::WRITE | StreamMode::TRUNC);

            mfStream.WriteStream(file);

            file.Flush();

            file.Close();

#endif

        }

    }

}

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