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Diffstat (limited to 'vcl/source/gdi/gfxlink.cxx')
| -rw-r--r-- | vcl/source/gdi/gfxlink.cxx | 189 |
1 files changed, 189 insertions, 0 deletions
diff --git a/vcl/source/gdi/gfxlink.cxx b/vcl/source/gdi/gfxlink.cxx new file mode 100644 index 000000000..83936c277 --- /dev/null +++ b/vcl/source/gdi/gfxlink.cxx @@ -0,0 +1,189 @@ +/* -*- 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; + 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: */ |