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/* -*- 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 <sal/log.hxx>
#include <tools/stream.hxx>
#include <tools/vcompat.hxx>
#include <vcl/graph.hxx>
#include <vcl/gfxlink.hxx>
#include <vcl/graphicfilter.hxx>
#include <memory>
#include <boost/functional/hash.hpp>
GfxLink::GfxLink()
: meType(GfxLinkType::NONE)
, mnUserId(0)
, maHash(0)
, mnSwapInDataSize(0)
, mbPrefMapModeValid(false)
, mbPrefSizeValid(false)
{
}
GfxLink::GfxLink(std::unique_ptr<sal_uInt8[]> pBuf, sal_uInt32 nSize, GfxLinkType nType)
: meType(nType)
, mnUserId(0)
, mpSwapInData(std::shared_ptr<sal_uInt8>(pBuf.release(), pBuf.get_deleter())) // std::move(pBuf) does not compile on Jenkins MacOSX (24 May 2016)
, maHash(0)
, mnSwapInDataSize(nSize)
, mbPrefMapModeValid(false)
, mbPrefSizeValid(false)
{
SAL_WARN_IF(mpSwapInData == nullptr || mnSwapInDataSize <= 0, "vcl",
"GfxLink::GfxLink(): empty/NULL buffer given");
}
size_t GfxLink::GetHash() const
{
if (!maHash)
{
std::size_t seed = 0;
boost::hash_combine(seed, mnSwapInDataSize);
boost::hash_combine(seed, meType);
const sal_uInt8* pData = GetData();
if (pData)
seed += boost::hash_range(pData, pData + GetDataSize());
maHash = seed;
}
return maHash;
}
bool GfxLink::operator==( const GfxLink& rGfxLink ) const
{
if (GetHash() != rGfxLink.GetHash())
return false;
if ( mnSwapInDataSize != rGfxLink.mnSwapInDataSize ||
meType != rGfxLink.meType )
return false;
const sal_uInt8* pSource = GetData();
const sal_uInt8* pDest = rGfxLink.GetData();
if ( pSource == pDest )
return true;
sal_uInt32 nSourceSize = GetDataSize();
sal_uInt32 nDestSize = rGfxLink.GetDataSize();
if ( pSource && pDest && ( nSourceSize == nDestSize ) )
return (memcmp( pSource, pDest, nSourceSize ) == 0);
return false;
}
bool GfxLink::IsNative() const
{
return meType >= GfxLinkType::NativeFirst && meType <= GfxLinkType::NativeLast;
}
const sal_uInt8* GfxLink::GetData() const
{
return mpSwapInData.get();
}
void GfxLink::SetPrefSize( const Size& rPrefSize )
{
maPrefSize = rPrefSize;
mbPrefSizeValid = true;
}
void GfxLink::SetPrefMapMode( const MapMode& rPrefMapMode )
{
maPrefMapMode = rPrefMapMode;
mbPrefMapModeValid = true;
}
bool GfxLink::LoadNative( Graphic& rGraphic )
{
bool bRet = false;
if( IsNative() && mnSwapInDataSize )
{
const sal_uInt8* pData = GetData();
if (pData)
{
SvMemoryStream aMemoryStream(const_cast<sal_uInt8*>(pData), mnSwapInDataSize, StreamMode::READ | StreamMode::WRITE);
OUString aShortName;
switch (meType)
{
case GfxLinkType::NativeGif: aShortName = GIF_SHORTNAME; break;
case GfxLinkType::NativeJpg: aShortName = JPG_SHORTNAME; break;
case GfxLinkType::NativePng: aShortName = PNG_SHORTNAME; break;
case GfxLinkType::NativeTif: aShortName = TIF_SHORTNAME; break;
case GfxLinkType::NativeWmf: aShortName = WMF_SHORTNAME; break;
case GfxLinkType::NativeMet: aShortName = MET_SHORTNAME; break;
case GfxLinkType::NativePct: aShortName = PCT_SHORTNAME; break;
case GfxLinkType::NativeSvg: aShortName = SVG_SHORTNAME; break;
case GfxLinkType::NativeBmp: aShortName = BMP_SHORTNAME; break;
case GfxLinkType::NativePdf: aShortName = PDF_SHORTNAME; break;
case GfxLinkType::NativeWebp: aShortName = WEBP_SHORTNAME; break;
default: break;
}
if (!aShortName.isEmpty())
{
GraphicFilter& rFilter = GraphicFilter::GetGraphicFilter();
sal_uInt16 nFormat = rFilter.GetImportFormatNumberForShortName(aShortName);
ErrCode nResult = rFilter.ImportGraphic(rGraphic, OUString(), aMemoryStream, nFormat);
if (nResult == ERRCODE_NONE)
bRet = true;
}
}
}
return bRet;
}
bool GfxLink::ExportNative( SvStream& rOStream ) const
{
if( GetDataSize() )
{
auto pData = GetSwapInData();
if (pData)
rOStream.WriteBytes( pData.get(), mnSwapInDataSize );
}
return ( rOStream.GetError() == ERRCODE_NONE );
}
std::shared_ptr<sal_uInt8> GfxLink::GetSwapInData() const
{
return mpSwapInData;
}
bool GfxLink::IsEMF() const
{
const sal_uInt8* pGraphicAry = GetData();
if ((GetType() == GfxLinkType::NativeWmf) && pGraphicAry && (GetDataSize() > 0x2c))
{
// check the magic number
if ((pGraphicAry[0x28] == 0x20) && (pGraphicAry[0x29] == 0x45)
&& (pGraphicAry[0x2a] == 0x4d) && (pGraphicAry[0x2b] == 0x46))
{
//emf detected
return true;
}
}
return false;
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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