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Diffstat (limited to 'vcl/source/gdi/pdfwriter_impl2.cxx')
| -rw-r--r-- | vcl/source/gdi/pdfwriter_impl2.cxx | 1990 |
1 files changed, 1990 insertions, 0 deletions
diff --git a/vcl/source/gdi/pdfwriter_impl2.cxx b/vcl/source/gdi/pdfwriter_impl2.cxx new file mode 100644 index 000000000..f4c60a661 --- /dev/null +++ b/vcl/source/gdi/pdfwriter_impl2.cxx @@ -0,0 +1,1990 @@ +/* -*- 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 <pdf/pdfwriter_impl.hxx> + +#include <vcl/pdfextoutdevdata.hxx> +#include <vcl/virdev.hxx> +#include <vcl/gdimtf.hxx> +#include <vcl/metaact.hxx> +#include <vcl/BitmapReadAccess.hxx> +#include <vcl/graph.hxx> + +#include <unotools/streamwrap.hxx> + +#include <tools/helpers.hxx> +#include <tools/fract.hxx> +#include <tools/stream.hxx> + +#include <comphelper/fileformat.h> +#include <comphelper/hash.hxx> +#include <comphelper/processfactory.hxx> +#include <comphelper/propertyvalue.hxx> + +#include <com/sun/star/beans/PropertyValue.hpp> +#include <com/sun/star/io/XSeekable.hpp> +#include <com/sun/star/graphic/GraphicProvider.hpp> +#include <com/sun/star/graphic/XGraphicProvider.hpp> +#include <com/sun/star/beans/XMaterialHolder.hpp> + +#include <cppuhelper/implbase.hxx> +#include <o3tl/unit_conversion.hxx> + +#include <sal/log.hxx> +#include <memory> + +using namespace vcl; +using namespace com::sun::star; +using namespace com::sun::star::uno; +using namespace com::sun::star::beans; + +static bool lcl_canUsePDFAxialShading(const Gradient& rGradient); + +void PDFWriterImpl::implWriteGradient( const tools::PolyPolygon& i_rPolyPoly, const Gradient& i_rGradient, + VirtualDevice* i_pDummyVDev, const vcl::PDFWriter::PlayMetafileContext& i_rContext ) +{ + GDIMetaFile aTmpMtf; + Gradient aGradient(i_rGradient); + + aGradient.AddGradientActions( i_rPolyPoly.GetBoundRect(), aTmpMtf ); + + m_rOuterFace.Push(); + m_rOuterFace.IntersectClipRegion( i_rPolyPoly.getB2DPolyPolygon() ); + playMetafile( aTmpMtf, nullptr, i_rContext, i_pDummyVDev ); + m_rOuterFace.Pop(); +} + +void PDFWriterImpl::implWriteBitmapEx( const Point& i_rPoint, const Size& i_rSize, const BitmapEx& i_rBitmapEx, const Graphic& i_Graphic, + VirtualDevice const * i_pDummyVDev, const vcl::PDFWriter::PlayMetafileContext& i_rContext ) +{ + if ( i_rBitmapEx.IsEmpty() || !i_rSize.Width() || !i_rSize.Height() ) + return; + + BitmapEx aBitmapEx( i_rBitmapEx ); + Point aPoint( i_rPoint ); + Size aSize( i_rSize ); + + // #i19065# Negative sizes have mirror semantics on + // OutputDevice. BitmapEx and co. have no idea about that, so + // perform that _before_ doing anything with aBitmapEx. + BmpMirrorFlags nMirrorFlags(BmpMirrorFlags::NONE); + if( aSize.Width() < 0 ) + { + aSize.setWidth( aSize.Width() * -1 ); + aPoint.AdjustX( -(aSize.Width()) ); + nMirrorFlags |= BmpMirrorFlags::Horizontal; + } + if( aSize.Height() < 0 ) + { + aSize.setHeight( aSize.Height() * -1 ); + aPoint.AdjustY( -(aSize.Height()) ); + nMirrorFlags |= BmpMirrorFlags::Vertical; + } + + if( nMirrorFlags != BmpMirrorFlags::NONE ) + { + aBitmapEx.Mirror( nMirrorFlags ); + } + + bool bIsJpeg = false, bIsPng = false; + if( i_Graphic.GetType() != GraphicType::NONE && i_Graphic.GetBitmapEx() == aBitmapEx ) + { + GfxLinkType eType = i_Graphic.GetGfxLink().GetType(); + bIsJpeg = (eType == GfxLinkType::NativeJpg); + bIsPng = (eType == GfxLinkType::NativePng); + } + + // Do not downsample images smaller than 50x50px. + const Size aBmpSize(aBitmapEx.GetSizePixel()); + if (i_rContext.m_nMaxImageResolution > 50 && aBmpSize.getWidth() > 50 + && aBmpSize.getHeight() > 50) + { + // do downsampling if necessary + const Size aDstSizeTwip( i_pDummyVDev->PixelToLogic(i_pDummyVDev->LogicToPixel(aSize), MapMode(MapUnit::MapTwip)) ); + const double fBmpPixelX = aBmpSize.Width(); + const double fBmpPixelY = aBmpSize.Height(); + const double fMaxPixelX + = o3tl::convert<double>(aDstSizeTwip.Width(), o3tl::Length::twip, o3tl::Length::in) + * i_rContext.m_nMaxImageResolution; + const double fMaxPixelY + = o3tl::convert<double>(aDstSizeTwip.Height(), o3tl::Length::twip, o3tl::Length::in) + * i_rContext.m_nMaxImageResolution; + + // check, if the bitmap DPI exceeds the maximum DPI (allow 4 pixel rounding tolerance) + if( ( ( fBmpPixelX > ( fMaxPixelX + 4 ) ) || + ( fBmpPixelY > ( fMaxPixelY + 4 ) ) ) && + ( fBmpPixelY > 0.0 ) && ( fMaxPixelY > 0.0 ) ) + { + // do scaling + Size aNewBmpSize; + const double fBmpWH = fBmpPixelX / fBmpPixelY; + const double fMaxWH = fMaxPixelX / fMaxPixelY; + + if( fBmpWH < fMaxWH ) + { + aNewBmpSize.setWidth( FRound( fMaxPixelY * fBmpWH ) ); + aNewBmpSize.setHeight( FRound( fMaxPixelY ) ); + } + else if( fBmpWH > 0.0 ) + { + aNewBmpSize.setWidth( FRound( fMaxPixelX ) ); + aNewBmpSize.setHeight( FRound( fMaxPixelX / fBmpWH) ); + } + + if( aNewBmpSize.Width() && aNewBmpSize.Height() ) + { + // #i121233# Use best quality for PDF exports + aBitmapEx.Scale( aNewBmpSize, BmpScaleFlag::BestQuality ); + } + else + { + aBitmapEx.SetEmpty(); + } + } + } + + const Size aSizePixel( aBitmapEx.GetSizePixel() ); + if ( !(aSizePixel.Width() && aSizePixel.Height()) ) + return; + + if( m_aContext.ColorMode == PDFWriter::DrawGreyscale ) + { + auto ePixelFormat = aBitmapEx.GetBitmap().getPixelFormat(); + if (ePixelFormat != vcl::PixelFormat::N1_BPP) + aBitmapEx.Convert(BmpConversion::N8BitGreys); + } + bool bUseJPGCompression = !i_rContext.m_bOnlyLosslessCompression; + if ( bIsPng || ( aSizePixel.Width() < 32 ) || ( aSizePixel.Height() < 32 ) ) + bUseJPGCompression = false; + + auto pStrm=std::make_shared<SvMemoryStream>(); + AlphaMask aAlphaMask; + + bool bTrueColorJPG = true; + if ( bUseJPGCompression ) + { + // TODO this checks could be done much earlier, saving us + // from trying conversion & stores before... + if ( !aBitmapEx.IsAlpha() ) + { + const auto& rCacheEntry=m_aPDFBmpCache.find( + aBitmapEx.GetChecksum()); + if ( rCacheEntry != m_aPDFBmpCache.end() ) + { + m_rOuterFace.DrawJPGBitmap( *rCacheEntry->second, true, aSizePixel, + tools::Rectangle( aPoint, aSize ), aAlphaMask, i_Graphic ); + return; + } + } + sal_uInt32 nZippedFileSize = 0; // sj: we will calculate the filesize of a zipped bitmap + if ( !bIsJpeg ) // to determine if jpeg compression is useful + { + SvMemoryStream aTemp; + aTemp.SetCompressMode( aTemp.GetCompressMode() | SvStreamCompressFlags::ZBITMAP ); + aTemp.SetVersion( SOFFICE_FILEFORMAT_40 ); // sj: up from version 40 our bitmap stream operator + WriteDIBBitmapEx(aBitmapEx, aTemp); // is capable of zlib stream compression + nZippedFileSize = aTemp.TellEnd(); + } + if ( aBitmapEx.IsAlpha() ) + aAlphaMask = aBitmapEx.GetAlpha(); + Graphic aGraphic(BitmapEx(aBitmapEx.GetBitmap())); + + Sequence< PropertyValue > aFilterData{ + comphelper::makePropertyValue("Quality", sal_Int32(i_rContext.m_nJPEGQuality)), + comphelper::makePropertyValue("ColorMode", sal_Int32(0)) + }; + + try + { + uno::Reference < io::XStream > xStream = new utl::OStreamWrapper( *pStrm ); + uno::Reference< io::XSeekable > xSeekable( xStream, UNO_QUERY_THROW ); + uno::Reference< uno::XComponentContext > xContext( comphelper::getProcessComponentContext() ); + uno::Reference< graphic::XGraphicProvider > xGraphicProvider( graphic::GraphicProvider::create(xContext) ); + uno::Reference< graphic::XGraphic > xGraphic( aGraphic.GetXGraphic() ); + uno::Reference < io::XOutputStream > xOut( xStream->getOutputStream() ); + uno::Sequence< beans::PropertyValue > aOutMediaProperties{ + comphelper::makePropertyValue("OutputStream", xOut), + comphelper::makePropertyValue("MimeType", OUString("image/jpeg")), + comphelper::makePropertyValue("FilterData", aFilterData) + }; + xGraphicProvider->storeGraphic( xGraphic, aOutMediaProperties ); + xOut->flush(); + if ( !bIsJpeg && xSeekable->getLength() > nZippedFileSize ) + { + bUseJPGCompression = false; + } + else + { + pStrm->Seek( STREAM_SEEK_TO_END ); + + xSeekable->seek( 0 ); + Sequence< PropertyValue > aArgs{ comphelper::makePropertyValue("InputStream", + xStream) }; + uno::Reference< XPropertySet > xPropSet( xGraphicProvider->queryGraphicDescriptor( aArgs ) ); + if ( xPropSet.is() ) + { + sal_Int16 nBitsPerPixel = 24; + if ( xPropSet->getPropertyValue("BitsPerPixel") >>= nBitsPerPixel ) + { + bTrueColorJPG = nBitsPerPixel != 8; + } + } + } + } + catch( uno::Exception& ) + { + bUseJPGCompression = false; + } + } + if ( bUseJPGCompression ) + { + m_rOuterFace.DrawJPGBitmap( *pStrm, bTrueColorJPG, aSizePixel, tools::Rectangle( aPoint, aSize ), aAlphaMask, i_Graphic ); + if (!aBitmapEx.IsAlpha() && bTrueColorJPG) + { + // Cache last jpeg export + m_aPDFBmpCache.insert( + {aBitmapEx.GetChecksum(), pStrm}); + } + } + else if ( aBitmapEx.IsAlpha() ) + m_rOuterFace.DrawBitmapEx( aPoint, aSize, aBitmapEx ); + else + m_rOuterFace.DrawBitmap( aPoint, aSize, aBitmapEx.GetBitmap(), i_Graphic ); + +} + +void PDFWriterImpl::playMetafile( const GDIMetaFile& i_rMtf, vcl::PDFExtOutDevData* i_pOutDevData, const vcl::PDFWriter::PlayMetafileContext& i_rContext, VirtualDevice* pDummyVDev ) +{ + bool bAssertionFired( false ); + + ScopedVclPtr<VirtualDevice> xPrivateDevice; + if( ! pDummyVDev ) + { + xPrivateDevice.disposeAndReset(VclPtr<VirtualDevice>::Create()); + pDummyVDev = xPrivateDevice.get(); + pDummyVDev->EnableOutput( false ); + pDummyVDev->SetMapMode( i_rMtf.GetPrefMapMode() ); + } + const GDIMetaFile& aMtf( i_rMtf ); + + for( sal_uInt32 i = 0, nCount = aMtf.GetActionSize(); i < nCount; ) + { + if ( !i_pOutDevData || !i_pOutDevData->PlaySyncPageAct( m_rOuterFace, i, aMtf ) ) + { + const MetaAction* pAction = aMtf.GetAction( i ); + const MetaActionType nType = pAction->GetType(); + + switch( nType ) + { + case MetaActionType::PIXEL: + { + const MetaPixelAction* pA = static_cast<const MetaPixelAction*>(pAction); + m_rOuterFace.DrawPixel( pA->GetPoint(), pA->GetColor() ); + } + break; + + case MetaActionType::POINT: + { + const MetaPointAction* pA = static_cast<const MetaPointAction*>(pAction); + m_rOuterFace.DrawPixel( pA->GetPoint() ); + } + break; + + case MetaActionType::LINE: + { + const MetaLineAction* pA = static_cast<const MetaLineAction*>(pAction); + if ( pA->GetLineInfo().IsDefault() ) + m_rOuterFace.DrawLine( pA->GetStartPoint(), pA->GetEndPoint() ); + else + m_rOuterFace.DrawLine( pA->GetStartPoint(), pA->GetEndPoint(), pA->GetLineInfo() ); + } + break; + + case MetaActionType::RECT: + { + const MetaRectAction* pA = static_cast<const MetaRectAction*>(pAction); + m_rOuterFace.DrawRect( pA->GetRect() ); + } + break; + + case MetaActionType::ROUNDRECT: + { + const MetaRoundRectAction* pA = static_cast<const MetaRoundRectAction*>(pAction); + m_rOuterFace.DrawRect( pA->GetRect(), pA->GetHorzRound(), pA->GetVertRound() ); + } + break; + + case MetaActionType::ELLIPSE: + { + const MetaEllipseAction* pA = static_cast<const MetaEllipseAction*>(pAction); + m_rOuterFace.DrawEllipse( pA->GetRect() ); + } + break; + + case MetaActionType::ARC: + { + const MetaArcAction* pA = static_cast<const MetaArcAction*>(pAction); + m_rOuterFace.DrawArc( pA->GetRect(), pA->GetStartPoint(), pA->GetEndPoint() ); + } + break; + + case MetaActionType::PIE: + { + const MetaArcAction* pA = static_cast<const MetaArcAction*>(pAction); + m_rOuterFace.DrawPie( pA->GetRect(), pA->GetStartPoint(), pA->GetEndPoint() ); + } + break; + + case MetaActionType::CHORD: + { + const MetaChordAction* pA = static_cast<const MetaChordAction*>(pAction); + m_rOuterFace.DrawChord( pA->GetRect(), pA->GetStartPoint(), pA->GetEndPoint() ); + } + break; + + case MetaActionType::POLYGON: + { + const MetaPolygonAction* pA = static_cast<const MetaPolygonAction*>(pAction); + m_rOuterFace.DrawPolygon( pA->GetPolygon() ); + } + break; + + case MetaActionType::POLYLINE: + { + const MetaPolyLineAction* pA = static_cast<const MetaPolyLineAction*>(pAction); + if ( pA->GetLineInfo().IsDefault() ) + m_rOuterFace.DrawPolyLine( pA->GetPolygon() ); + else + m_rOuterFace.DrawPolyLine( pA->GetPolygon(), pA->GetLineInfo() ); + } + break; + + case MetaActionType::POLYPOLYGON: + { + const MetaPolyPolygonAction* pA = static_cast<const MetaPolyPolygonAction*>(pAction); + m_rOuterFace.DrawPolyPolygon( pA->GetPolyPolygon() ); + } + break; + + case MetaActionType::GRADIENT: + { + const MetaGradientAction* pA = static_cast<const MetaGradientAction*>(pAction); + const Gradient& rGradient = pA->GetGradient(); + if (lcl_canUsePDFAxialShading(rGradient)) + { + m_rOuterFace.DrawGradient( pA->GetRect(), rGradient ); + } + else + { + const tools::PolyPolygon aPolyPoly( pA->GetRect() ); + implWriteGradient( aPolyPoly, rGradient, pDummyVDev, i_rContext ); + } + } + break; + + case MetaActionType::GRADIENTEX: + { + const MetaGradientExAction* pA = static_cast<const MetaGradientExAction*>(pAction); + const Gradient& rGradient = pA->GetGradient(); + + if (lcl_canUsePDFAxialShading(rGradient)) + m_rOuterFace.DrawGradient( pA->GetPolyPolygon(), rGradient ); + else + implWriteGradient( pA->GetPolyPolygon(), rGradient, pDummyVDev, i_rContext ); + } + break; + + case MetaActionType::HATCH: + { + const MetaHatchAction* pA = static_cast<const MetaHatchAction*>(pAction); + m_rOuterFace.DrawHatch( pA->GetPolyPolygon(), pA->GetHatch() ); + } + break; + + case MetaActionType::Transparent: + { + const MetaTransparentAction* pA = static_cast<const MetaTransparentAction*>(pAction); + m_rOuterFace.DrawTransparent( pA->GetPolyPolygon(), pA->GetTransparence() ); + } + break; + + case MetaActionType::FLOATTRANSPARENT: + { + const MetaFloatTransparentAction* pA = static_cast<const MetaFloatTransparentAction*>(pAction); + + GDIMetaFile aTmpMtf( pA->GetGDIMetaFile() ); + const Point& rPos = pA->GetPoint(); + const Size& rSize= pA->GetSize(); + const Gradient& rTransparenceGradient = pA->GetGradient(); + + // special case constant alpha value + if( rTransparenceGradient.GetStartColor() == rTransparenceGradient.GetEndColor() ) + { + const Color aTransCol( rTransparenceGradient.GetStartColor() ); + const sal_uInt16 nTransPercent = aTransCol.GetLuminance() * 100 / 255; + m_rOuterFace.BeginTransparencyGroup(); + + // tdf#138826 adjust the aTmpMtf to start at rPos (see also #i112076#) + Point aMtfOrigin(aTmpMtf.GetPrefMapMode().GetOrigin()); + if (rPos != aMtfOrigin) + aTmpMtf.Move(rPos.X() - aMtfOrigin.X(), rPos.Y() - aMtfOrigin.Y()); + + playMetafile( aTmpMtf, nullptr, i_rContext, pDummyVDev ); + m_rOuterFace.EndTransparencyGroup( tools::Rectangle( rPos, rSize ), nTransPercent ); + } + else + { + const Size aDstSizeTwip( pDummyVDev->PixelToLogic(pDummyVDev->LogicToPixel(rSize), MapMode(MapUnit::MapTwip)) ); + + // i#115962# Always use at least 300 DPI for bitmap conversion of transparence gradients, + // else the quality is not acceptable (see bugdoc as example) + sal_Int32 nMaxBmpDPI(300); + + if( i_rContext.m_nMaxImageResolution > 50 ) + { + if ( nMaxBmpDPI > i_rContext.m_nMaxImageResolution ) + nMaxBmpDPI = i_rContext.m_nMaxImageResolution; + } + const sal_Int32 nPixelX = o3tl::convert<double>(aDstSizeTwip.Width(), o3tl::Length::twip, o3tl::Length::in) * nMaxBmpDPI; + const sal_Int32 nPixelY = o3tl::convert<double>(aDstSizeTwip.Height(), o3tl::Length::twip, o3tl::Length::in) * nMaxBmpDPI; + if ( nPixelX && nPixelY ) + { + Size aDstSizePixel( nPixelX, nPixelY ); + ScopedVclPtrInstance<VirtualDevice> xVDev; + if( xVDev->SetOutputSizePixel( aDstSizePixel ) ) + { + Bitmap aPaint, aMask; + AlphaMask aAlpha; + Point aPoint; + + MapMode aMapMode( pDummyVDev->GetMapMode() ); + aMapMode.SetOrigin( aPoint ); + xVDev->SetMapMode( aMapMode ); + Size aDstSize( xVDev->PixelToLogic( aDstSizePixel ) ); + + Point aMtfOrigin( aTmpMtf.GetPrefMapMode().GetOrigin() ); + if ( aMtfOrigin.X() || aMtfOrigin.Y() ) + aTmpMtf.Move( -aMtfOrigin.X(), -aMtfOrigin.Y() ); + double fScaleX = static_cast<double>(aDstSize.Width()) / static_cast<double>(aTmpMtf.GetPrefSize().Width()); + double fScaleY = static_cast<double>(aDstSize.Height()) / static_cast<double>(aTmpMtf.GetPrefSize().Height()); + if( fScaleX != 1.0 || fScaleY != 1.0 ) + aTmpMtf.Scale( fScaleX, fScaleY ); + aTmpMtf.SetPrefMapMode( aMapMode ); + + // create paint bitmap + aTmpMtf.WindStart(); + aTmpMtf.Play(*xVDev, aPoint, aDstSize); + aTmpMtf.WindStart(); + + xVDev->EnableMapMode( false ); + aPaint = xVDev->GetBitmap( aPoint, aDstSizePixel ); + xVDev->EnableMapMode(); + + // create mask bitmap + xVDev->SetLineColor( COL_BLACK ); + xVDev->SetFillColor( COL_BLACK ); + xVDev->DrawRect( tools::Rectangle( aPoint, aDstSize ) ); + xVDev->SetDrawMode( DrawModeFlags::WhiteLine | DrawModeFlags::WhiteFill | DrawModeFlags::WhiteText | + DrawModeFlags::WhiteBitmap | DrawModeFlags::WhiteGradient ); + aTmpMtf.WindStart(); + aTmpMtf.Play(*xVDev, aPoint, aDstSize); + aTmpMtf.WindStart(); + xVDev->EnableMapMode( false ); + aMask = xVDev->GetBitmap( aPoint, aDstSizePixel ); + xVDev->EnableMapMode(); + + // create alpha mask from gradient + xVDev->SetDrawMode( DrawModeFlags::GrayGradient ); + xVDev->DrawGradient( tools::Rectangle( aPoint, aDstSize ), rTransparenceGradient ); + xVDev->SetDrawMode( DrawModeFlags::Default ); + xVDev->EnableMapMode( false ); + xVDev->DrawMask( aPoint, aDstSizePixel, aMask, COL_WHITE ); + aAlpha = xVDev->GetBitmap( aPoint, aDstSizePixel ); + + Graphic aGraphic = i_pOutDevData ? i_pOutDevData->GetCurrentGraphic() : Graphic(); + implWriteBitmapEx( rPos, rSize, BitmapEx( aPaint, aAlpha ), aGraphic, pDummyVDev, i_rContext ); + } + } + } + } + break; + + case MetaActionType::EPS: + { + const MetaEPSAction* pA = static_cast<const MetaEPSAction*>(pAction); + const GDIMetaFile& aSubstitute( pA->GetSubstitute() ); + + m_rOuterFace.Push(); + pDummyVDev->Push(); + + MapMode aMapMode( aSubstitute.GetPrefMapMode() ); + Size aOutSize( OutputDevice::LogicToLogic( pA->GetSize(), pDummyVDev->GetMapMode(), aMapMode ) ); + aMapMode.SetScaleX( Fraction( aOutSize.Width(), aSubstitute.GetPrefSize().Width() ) ); + aMapMode.SetScaleY( Fraction( aOutSize.Height(), aSubstitute.GetPrefSize().Height() ) ); + aMapMode.SetOrigin( OutputDevice::LogicToLogic( pA->GetPoint(), pDummyVDev->GetMapMode(), aMapMode ) ); + + m_rOuterFace.SetMapMode( aMapMode ); + pDummyVDev->SetMapMode( aMapMode ); + playMetafile( aSubstitute, nullptr, i_rContext, pDummyVDev ); + pDummyVDev->Pop(); + m_rOuterFace.Pop(); + } + break; + + case MetaActionType::COMMENT: + if( ! i_rContext.m_bTransparenciesWereRemoved ) + { + const MetaCommentAction* pA = static_cast<const MetaCommentAction*>(pAction); + + if( pA->GetComment().equalsIgnoreAsciiCase("XGRAD_SEQ_BEGIN")) + { + const MetaGradientExAction* pGradAction = nullptr; + bool bDone = false; + + while( !bDone && ( ++i < nCount ) ) + { + pAction = aMtf.GetAction( i ); + + if( pAction->GetType() == MetaActionType::GRADIENTEX ) + pGradAction = static_cast<const MetaGradientExAction*>(pAction); + else if( ( pAction->GetType() == MetaActionType::COMMENT ) && + ( static_cast<const MetaCommentAction*>(pAction)->GetComment().equalsIgnoreAsciiCase("XGRAD_SEQ_END")) ) + { + bDone = true; + } + } + + if( pGradAction ) + { + if (lcl_canUsePDFAxialShading(pGradAction->GetGradient())) + { + m_rOuterFace.DrawGradient( pGradAction->GetPolyPolygon(), pGradAction->GetGradient() ); + } + else + { + implWriteGradient( pGradAction->GetPolyPolygon(), pGradAction->GetGradient(), pDummyVDev, i_rContext ); + } + } + } + else + { + const sal_uInt8* pData = pA->GetData(); + if ( pData ) + { + SvMemoryStream aMemStm( const_cast<sal_uInt8 *>(pData), pA->GetDataSize(), StreamMode::READ ); + bool bSkipSequence = false; + OString sSeqEnd; + + if( pA->GetComment() == "XPATHSTROKE_SEQ_BEGIN" ) + { + sSeqEnd = OString("XPATHSTROKE_SEQ_END"); + SvtGraphicStroke aStroke; + ReadSvtGraphicStroke( aMemStm, aStroke ); + + tools::Polygon aPath; + aStroke.getPath( aPath ); + + tools::PolyPolygon aStartArrow; + tools::PolyPolygon aEndArrow; + double fTransparency( aStroke.getTransparency() ); + double fStrokeWidth( aStroke.getStrokeWidth() ); + SvtGraphicStroke::DashArray aDashArray; + + aStroke.getStartArrow( aStartArrow ); + aStroke.getEndArrow( aEndArrow ); + aStroke.getDashArray( aDashArray ); + + bSkipSequence = true; + if ( aStartArrow.Count() || aEndArrow.Count() ) + bSkipSequence = false; + if ( !aDashArray.empty() && ( fStrokeWidth != 0.0 ) && ( fTransparency == 0.0 ) ) + bSkipSequence = false; + if ( bSkipSequence ) + { + PDFWriter::ExtLineInfo aInfo; + aInfo.m_fLineWidth = fStrokeWidth; + aInfo.m_fTransparency = fTransparency; + aInfo.m_fMiterLimit = aStroke.getMiterLimit(); + switch( aStroke.getCapType() ) + { + default: + case SvtGraphicStroke::capButt: aInfo.m_eCap = PDFWriter::capButt;break; + case SvtGraphicStroke::capRound: aInfo.m_eCap = PDFWriter::capRound;break; + case SvtGraphicStroke::capSquare: aInfo.m_eCap = PDFWriter::capSquare;break; + } + switch( aStroke.getJoinType() ) + { + default: + case SvtGraphicStroke::joinMiter: aInfo.m_eJoin = PDFWriter::joinMiter;break; + case SvtGraphicStroke::joinRound: aInfo.m_eJoin = PDFWriter::joinRound;break; + case SvtGraphicStroke::joinBevel: aInfo.m_eJoin = PDFWriter::joinBevel;break; + case SvtGraphicStroke::joinNone: + aInfo.m_eJoin = PDFWriter::joinMiter; + aInfo.m_fMiterLimit = 0.0; + break; + } + aInfo.m_aDashArray = aDashArray; + + if(SvtGraphicStroke::joinNone == aStroke.getJoinType() + && fStrokeWidth > 0.0) + { + // emulate no edge rounding by handling single edges + const sal_uInt16 nPoints(aPath.GetSize()); + const bool bCurve(aPath.HasFlags()); + + for(sal_uInt16 a(0); a + 1 < nPoints; a++) + { + if(bCurve + && PolyFlags::Normal != aPath.GetFlags(a + 1) + && a + 2 < nPoints + && PolyFlags::Normal != aPath.GetFlags(a + 2) + && a + 3 < nPoints) + { + const tools::Polygon aSnippet(4, + aPath.GetConstPointAry() + a, + aPath.GetConstFlagAry() + a); + m_rOuterFace.DrawPolyLine( aSnippet, aInfo ); + a += 2; + } + else + { + const tools::Polygon aSnippet(2, + aPath.GetConstPointAry() + a); + m_rOuterFace.DrawPolyLine( aSnippet, aInfo ); + } + } + } + else + { + m_rOuterFace.DrawPolyLine( aPath, aInfo ); + } + } + } + else if ( pA->GetComment() == "XPATHFILL_SEQ_BEGIN" ) + { + sSeqEnd = OString("XPATHFILL_SEQ_END"); + SvtGraphicFill aFill; + ReadSvtGraphicFill( aMemStm, aFill ); + + if ( ( aFill.getFillType() == SvtGraphicFill::fillSolid ) && ( aFill.getFillRule() == SvtGraphicFill::fillEvenOdd ) ) + { + double fTransparency = aFill.getTransparency(); + if ( fTransparency == 0.0 ) + { + tools::PolyPolygon aPath; + aFill.getPath( aPath ); + + bSkipSequence = true; + m_rOuterFace.DrawPolyPolygon( aPath ); + } + else if ( fTransparency == 1.0 ) + bSkipSequence = true; + } + } + if ( bSkipSequence ) + { + while( ++i < nCount ) + { + pAction = aMtf.GetAction( i ); + if ( pAction->GetType() == MetaActionType::COMMENT ) + { + OString sComment( static_cast<const MetaCommentAction*>(pAction)->GetComment() ); + if (sComment == sSeqEnd) + break; + } + // #i44496# + // the replacement action for stroke is a filled rectangle + // the set fillcolor of the replacement is part of the graphics + // state and must not be skipped + else if( pAction->GetType() == MetaActionType::FILLCOLOR ) + { + const MetaFillColorAction* pMA = static_cast<const MetaFillColorAction*>(pAction); + if( pMA->IsSetting() ) + m_rOuterFace.SetFillColor( pMA->GetColor() ); + else + m_rOuterFace.SetFillColor(); + } + } + } + } + } + } + break; + + case MetaActionType::BMP: + { + const MetaBmpAction* pA = static_cast<const MetaBmpAction*>(pAction); + BitmapEx aBitmapEx( pA->GetBitmap() ); + Size aSize( OutputDevice::LogicToLogic( aBitmapEx.GetPrefSize(), + aBitmapEx.GetPrefMapMode(), pDummyVDev->GetMapMode() ) ); + if( ! ( aSize.Width() && aSize.Height() ) ) + aSize = pDummyVDev->PixelToLogic( aBitmapEx.GetSizePixel() ); + + Graphic aGraphic = i_pOutDevData ? i_pOutDevData->GetCurrentGraphic() : Graphic(); + implWriteBitmapEx( pA->GetPoint(), aSize, aBitmapEx, aGraphic, pDummyVDev, i_rContext ); + } + break; + + case MetaActionType::BMPSCALE: + { + const MetaBmpScaleAction* pA = static_cast<const MetaBmpScaleAction*>(pAction); + Graphic aGraphic = i_pOutDevData ? i_pOutDevData->GetCurrentGraphic() : Graphic(); + implWriteBitmapEx( pA->GetPoint(), pA->GetSize(), BitmapEx( pA->GetBitmap() ), aGraphic, pDummyVDev, i_rContext ); + } + break; + + case MetaActionType::BMPSCALEPART: + { + const MetaBmpScalePartAction* pA = static_cast<const MetaBmpScalePartAction*>(pAction); + BitmapEx aBitmapEx( pA->GetBitmap() ); + aBitmapEx.Crop( tools::Rectangle( pA->GetSrcPoint(), pA->GetSrcSize() ) ); + Graphic aGraphic = i_pOutDevData ? i_pOutDevData->GetCurrentGraphic() : Graphic(); + implWriteBitmapEx( pA->GetDestPoint(), pA->GetDestSize(), aBitmapEx, aGraphic, pDummyVDev, i_rContext ); + } + break; + + case MetaActionType::BMPEX: + { + const MetaBmpExAction* pA = static_cast<const MetaBmpExAction*>(pAction); + const BitmapEx& aBitmapEx( pA->GetBitmapEx() ); + Size aSize( OutputDevice::LogicToLogic( aBitmapEx.GetPrefSize(), + aBitmapEx.GetPrefMapMode(), pDummyVDev->GetMapMode() ) ); + Graphic aGraphic = i_pOutDevData ? i_pOutDevData->GetCurrentGraphic() : Graphic(); + implWriteBitmapEx( pA->GetPoint(), aSize, aBitmapEx, aGraphic, pDummyVDev, i_rContext ); + } + break; + + case MetaActionType::BMPEXSCALE: + { + const MetaBmpExScaleAction* pA = static_cast<const MetaBmpExScaleAction*>(pAction); + Graphic aGraphic = i_pOutDevData ? i_pOutDevData->GetCurrentGraphic() : Graphic(); + implWriteBitmapEx( pA->GetPoint(), pA->GetSize(), pA->GetBitmapEx(), aGraphic, pDummyVDev, i_rContext ); + } + break; + + case MetaActionType::BMPEXSCALEPART: + { + const MetaBmpExScalePartAction* pA = static_cast<const MetaBmpExScalePartAction*>(pAction); + BitmapEx aBitmapEx( pA->GetBitmapEx() ); + aBitmapEx.Crop( tools::Rectangle( pA->GetSrcPoint(), pA->GetSrcSize() ) ); + Graphic aGraphic = i_pOutDevData ? i_pOutDevData->GetCurrentGraphic() : Graphic(); + implWriteBitmapEx( pA->GetDestPoint(), pA->GetDestSize(), aBitmapEx, aGraphic, pDummyVDev, i_rContext ); + } + break; + + case MetaActionType::MASK: + case MetaActionType::MASKSCALE: + case MetaActionType::MASKSCALEPART: + { + SAL_WARN( "vcl", "MetaMask...Action not supported yet" ); + } + break; + + case MetaActionType::TEXT: + { + const MetaTextAction* pA = static_cast<const MetaTextAction*>(pAction); + m_rOuterFace.DrawText( pA->GetPoint(), pA->GetText().copy( pA->GetIndex(), std::min<sal_Int32>(pA->GetText().getLength() - pA->GetIndex(), pA->GetLen()) ) ); + } + break; + + case MetaActionType::TEXTRECT: + { + const MetaTextRectAction* pA = static_cast<const MetaTextRectAction*>(pAction); + m_rOuterFace.DrawText( pA->GetRect(), pA->GetText(), pA->GetStyle() ); + } + break; + + case MetaActionType::TEXTARRAY: + { + const MetaTextArrayAction* pA = static_cast<const MetaTextArrayAction*>(pAction); + m_rOuterFace.DrawTextArray( pA->GetPoint(), pA->GetText(), pA->GetDXArray(), pA->GetIndex(), pA->GetLen() ); + } + break; + + case MetaActionType::STRETCHTEXT: + { + const MetaStretchTextAction* pA = static_cast<const MetaStretchTextAction*>(pAction); + m_rOuterFace.DrawStretchText( pA->GetPoint(), pA->GetWidth(), pA->GetText(), pA->GetIndex(), pA->GetLen() ); + } + break; + + case MetaActionType::TEXTLINE: + { + const MetaTextLineAction* pA = static_cast<const MetaTextLineAction*>(pAction); + m_rOuterFace.DrawTextLine( pA->GetStartPoint(), pA->GetWidth(), pA->GetStrikeout(), pA->GetUnderline(), pA->GetOverline() ); + + } + break; + + case MetaActionType::CLIPREGION: + { + const MetaClipRegionAction* pA = static_cast<const MetaClipRegionAction*>(pAction); + + if( pA->IsClipping() ) + { + if( pA->GetRegion().IsEmpty() ) + m_rOuterFace.SetClipRegion( basegfx::B2DPolyPolygon() ); + else + { + const vcl::Region& aReg( pA->GetRegion() ); + m_rOuterFace.SetClipRegion( aReg.GetAsB2DPolyPolygon() ); + } + } + else + m_rOuterFace.SetClipRegion(); + } + break; + + case MetaActionType::ISECTRECTCLIPREGION: + { + const MetaISectRectClipRegionAction* pA = static_cast<const MetaISectRectClipRegionAction*>(pAction); + m_rOuterFace.IntersectClipRegion( pA->GetRect() ); + } + break; + + case MetaActionType::ISECTREGIONCLIPREGION: + { + const MetaISectRegionClipRegionAction* pA = static_cast<const MetaISectRegionClipRegionAction*>(pAction); + const vcl::Region& aReg( pA->GetRegion() ); + m_rOuterFace.IntersectClipRegion( aReg.GetAsB2DPolyPolygon() ); + } + break; + + case MetaActionType::MOVECLIPREGION: + { + const MetaMoveClipRegionAction* pA = static_cast<const MetaMoveClipRegionAction*>(pAction); + m_rOuterFace.MoveClipRegion( pA->GetHorzMove(), pA->GetVertMove() ); + } + break; + + case MetaActionType::MAPMODE: + { + const_cast< MetaAction* >( pAction )->Execute( pDummyVDev ); + m_rOuterFace.SetMapMode( pDummyVDev->GetMapMode() ); + } + break; + + case MetaActionType::LINECOLOR: + { + const MetaLineColorAction* pA = static_cast<const MetaLineColorAction*>(pAction); + + if( pA->IsSetting() ) + m_rOuterFace.SetLineColor( pA->GetColor() ); + else + m_rOuterFace.SetLineColor(); + } + break; + + case MetaActionType::FILLCOLOR: + { + const MetaFillColorAction* pA = static_cast<const MetaFillColorAction*>(pAction); + + if( pA->IsSetting() ) + m_rOuterFace.SetFillColor( pA->GetColor() ); + else + m_rOuterFace.SetFillColor(); + } + break; + + case MetaActionType::TEXTLINECOLOR: + { + const MetaTextLineColorAction* pA = static_cast<const MetaTextLineColorAction*>(pAction); + + if( pA->IsSetting() ) + m_rOuterFace.SetTextLineColor( pA->GetColor() ); + else + m_rOuterFace.SetTextLineColor(); + } + break; + + case MetaActionType::OVERLINECOLOR: + { + const MetaOverlineColorAction* pA = static_cast<const MetaOverlineColorAction*>(pAction); + + if( pA->IsSetting() ) + m_rOuterFace.SetOverlineColor( pA->GetColor() ); + else + m_rOuterFace.SetOverlineColor(); + } + break; + + case MetaActionType::TEXTFILLCOLOR: + { + const MetaTextFillColorAction* pA = static_cast<const MetaTextFillColorAction*>(pAction); + + if( pA->IsSetting() ) + m_rOuterFace.SetTextFillColor( pA->GetColor() ); + else + m_rOuterFace.SetTextFillColor(); + } + break; + + case MetaActionType::TEXTCOLOR: + { + const MetaTextColorAction* pA = static_cast<const MetaTextColorAction*>(pAction); + m_rOuterFace.SetTextColor( pA->GetColor() ); + } + break; + + case MetaActionType::TEXTALIGN: + { + const MetaTextAlignAction* pA = static_cast<const MetaTextAlignAction*>(pAction); + m_rOuterFace.SetTextAlign( pA->GetTextAlign() ); + } + break; + + case MetaActionType::FONT: + { + const MetaFontAction* pA = static_cast<const MetaFontAction*>(pAction); + m_rOuterFace.SetFont( pA->GetFont() ); + } + break; + + case MetaActionType::PUSH: + { + const MetaPushAction* pA = static_cast<const MetaPushAction*>(pAction); + + pDummyVDev->Push( pA->GetFlags() ); + m_rOuterFace.Push( pA->GetFlags() ); + } + break; + + case MetaActionType::POP: + { + pDummyVDev->Pop(); + m_rOuterFace.Pop(); + } + break; + + case MetaActionType::LAYOUTMODE: + { + const MetaLayoutModeAction* pA = static_cast<const MetaLayoutModeAction*>(pAction); + m_rOuterFace.SetLayoutMode( pA->GetLayoutMode() ); + } + break; + + case MetaActionType::TEXTLANGUAGE: + { + const MetaTextLanguageAction* pA = static_cast<const MetaTextLanguageAction*>(pAction); + m_rOuterFace.SetDigitLanguage( pA->GetTextLanguage() ); + } + break; + + case MetaActionType::WALLPAPER: + { + const MetaWallpaperAction* pA = static_cast<const MetaWallpaperAction*>(pAction); + m_rOuterFace.DrawWallpaper( pA->GetRect(), pA->GetWallpaper() ); + } + break; + + case MetaActionType::RASTEROP: + { + // !!! >>> we don't want to support this actions + } + break; + + case MetaActionType::REFPOINT: + { + // !!! >>> we don't want to support this actions + } + break; + + default: + // #i24604# Made assertion fire only once per + // metafile. The asserted actions here are all + // deprecated + if( !bAssertionFired ) + { + bAssertionFired = true; + SAL_WARN( "vcl", "PDFExport::ImplWriteActions: deprecated and unsupported MetaAction encountered " << static_cast<int>(nType) ); + } + break; + } + i++; + } + } +} + +// Encryption methods + +/* a crutch to transport a ::comphelper::Hash safely though UNO API + this is needed for the PDF export dialog, which otherwise would have to pass + clear text passwords down till they can be used in PDFWriter. Unfortunately + the MD5 sum of the password (which is needed to create the PDF encryption key) + is not sufficient, since an MD5 digest cannot be created in an arbitrary state + which would be needed in PDFWriterImpl::computeEncryptionKey. +*/ +class EncHashTransporter : public cppu::WeakImplHelper < css::beans::XMaterialHolder > +{ + ::std::unique_ptr<::comphelper::Hash> m_pDigest; + sal_IntPtr maID; + std::vector< sal_uInt8 > maOValue; + + static std::map< sal_IntPtr, EncHashTransporter* > sTransporters; +public: + EncHashTransporter() + : m_pDigest(new ::comphelper::Hash(::comphelper::HashType::MD5)) + { + maID = reinterpret_cast< sal_IntPtr >(this); + while( sTransporters.find( maID ) != sTransporters.end() ) // paranoia mode + maID++; + sTransporters[ maID ] = this; + } + + virtual ~EncHashTransporter() override + { + sTransporters.erase( maID ); + SAL_INFO( "vcl", "EncHashTransporter freed" ); + } + + ::comphelper::Hash* getUDigest() { return m_pDigest.get(); }; + std::vector< sal_uInt8 >& getOValue() { return maOValue; } + void invalidate() + { + m_pDigest.reset(); + } + + // XMaterialHolder + virtual uno::Any SAL_CALL getMaterial() override + { + return uno::Any( sal_Int64(maID) ); + } + + static EncHashTransporter* getEncHashTransporter( const uno::Reference< beans::XMaterialHolder >& ); + +}; + +std::map< sal_IntPtr, EncHashTransporter* > EncHashTransporter::sTransporters; + +EncHashTransporter* EncHashTransporter::getEncHashTransporter( const uno::Reference< beans::XMaterialHolder >& xRef ) +{ + EncHashTransporter* pResult = nullptr; + if( xRef.is() ) + { + uno::Any aMat( xRef->getMaterial() ); + sal_Int64 nMat = 0; + if( aMat >>= nMat ) + { + std::map< sal_IntPtr, EncHashTransporter* >::iterator it = sTransporters.find( static_cast<sal_IntPtr>(nMat) ); + if( it != sTransporters.end() ) + pResult = it->second; + } + } + return pResult; +} + +void PDFWriterImpl::checkAndEnableStreamEncryption( sal_Int32 nObject ) +{ + if( !m_aContext.Encryption.Encrypt() ) + return; + + m_bEncryptThisStream = true; + sal_Int32 i = m_nKeyLength; + m_aContext.Encryption.EncryptionKey[i++] = static_cast<sal_uInt8>(nObject); + m_aContext.Encryption.EncryptionKey[i++] = static_cast<sal_uInt8>( nObject >> 8 ); + m_aContext.Encryption.EncryptionKey[i++] = static_cast<sal_uInt8>( nObject >> 16 ); + // the other location of m_nEncryptionKey is already set to 0, our fixed generation number + // do the MD5 hash + ::std::vector<unsigned char> const nMD5Sum(::comphelper::Hash::calculateHash( + m_aContext.Encryption.EncryptionKey.data(), i+2, ::comphelper::HashType::MD5)); + // the i+2 to take into account the generation number, always zero + // initialize the RC4 with the key + // key length: see algorithm 3.1, step 4: (N+5) max 16 + rtl_cipher_initARCFOUR( m_aCipher, rtl_Cipher_DirectionEncode, nMD5Sum.data(), m_nRC4KeyLength, nullptr, 0 ); +} + +void PDFWriterImpl::enableStringEncryption( sal_Int32 nObject ) +{ + if( !m_aContext.Encryption.Encrypt() ) + return; + + sal_Int32 i = m_nKeyLength; + m_aContext.Encryption.EncryptionKey[i++] = static_cast<sal_uInt8>(nObject); + m_aContext.Encryption.EncryptionKey[i++] = static_cast<sal_uInt8>( nObject >> 8 ); + m_aContext.Encryption.EncryptionKey[i++] = static_cast<sal_uInt8>( nObject >> 16 ); + // the other location of m_nEncryptionKey is already set to 0, our fixed generation number + // do the MD5 hash + // the i+2 to take into account the generation number, always zero + ::std::vector<unsigned char> const nMD5Sum(::comphelper::Hash::calculateHash( + m_aContext.Encryption.EncryptionKey.data(), i+2, ::comphelper::HashType::MD5)); + // initialize the RC4 with the key + // key length: see algorithm 3.1, step 4: (N+5) max 16 + rtl_cipher_initARCFOUR( m_aCipher, rtl_Cipher_DirectionEncode, nMD5Sum.data(), m_nRC4KeyLength, nullptr, 0 ); +} + +/* init the encryption engine +1. init the document id, used both for building the document id and for building the encryption key(s) +2. build the encryption key following algorithms described in the PDF specification + */ +uno::Reference< beans::XMaterialHolder > PDFWriterImpl::initEncryption( const OUString& i_rOwnerPassword, + const OUString& i_rUserPassword + ) +{ + uno::Reference< beans::XMaterialHolder > xResult; + if( !i_rOwnerPassword.isEmpty() || !i_rUserPassword.isEmpty() ) + { + rtl::Reference<EncHashTransporter> pTransporter = new EncHashTransporter; + xResult = pTransporter; + + // get padded passwords + sal_uInt8 aPadUPW[ENCRYPTED_PWD_SIZE], aPadOPW[ENCRYPTED_PWD_SIZE]; + padPassword( i_rOwnerPassword.isEmpty() ? i_rUserPassword : i_rOwnerPassword, aPadOPW ); + padPassword( i_rUserPassword, aPadUPW ); + + if( computeODictionaryValue( aPadOPW, aPadUPW, pTransporter->getOValue(), SECUR_128BIT_KEY ) ) + { + pTransporter->getUDigest()->update(aPadUPW, ENCRYPTED_PWD_SIZE); + } + else + xResult.clear(); + + // trash temporary padded cleartext PWDs + rtl_secureZeroMemory (aPadOPW, sizeof(aPadOPW)); + rtl_secureZeroMemory (aPadUPW, sizeof(aPadUPW)); + } + return xResult; +} + +bool PDFWriterImpl::prepareEncryption( const uno::Reference< beans::XMaterialHolder >& xEnc ) +{ + bool bSuccess = false; + EncHashTransporter* pTransporter = EncHashTransporter::getEncHashTransporter( xEnc ); + if( pTransporter ) + { + sal_Int32 nKeyLength = 0, nRC4KeyLength = 0; + sal_Int32 nAccessPermissions = computeAccessPermissions( m_aContext.Encryption, nKeyLength, nRC4KeyLength ); + m_aContext.Encryption.OValue = pTransporter->getOValue(); + bSuccess = computeUDictionaryValue( pTransporter, m_aContext.Encryption, nKeyLength, nAccessPermissions ); + } + if( ! bSuccess ) + { + m_aContext.Encryption.OValue.clear(); + m_aContext.Encryption.UValue.clear(); + m_aContext.Encryption.EncryptionKey.clear(); + } + return bSuccess; +} + +sal_Int32 PDFWriterImpl::computeAccessPermissions( const vcl::PDFWriter::PDFEncryptionProperties& i_rProperties, + sal_Int32& o_rKeyLength, sal_Int32& o_rRC4KeyLength ) +{ + /* + 2) compute the access permissions, in numerical form + + the default value depends on the revision 2 (40 bit) or 3 (128 bit security): + - for 40 bit security the unused bit must be set to 1, since they are not used + - for 128 bit security the same bit must be preset to 0 and set later if needed + according to the table 3.15, pdf v 1.4 */ + sal_Int32 nAccessPermissions = 0xfffff0c0; + + o_rKeyLength = SECUR_128BIT_KEY; + o_rRC4KeyLength = 16; // for this value see PDF spec v 1.4, algorithm 3.1 step 4, where n is 16, + // thus maximum permitted value is 16 + + nAccessPermissions |= ( i_rProperties.CanPrintTheDocument ) ? 1 << 2 : 0; + nAccessPermissions |= ( i_rProperties.CanModifyTheContent ) ? 1 << 3 : 0; + nAccessPermissions |= ( i_rProperties.CanCopyOrExtract ) ? 1 << 4 : 0; + nAccessPermissions |= ( i_rProperties.CanAddOrModify ) ? 1 << 5 : 0; + nAccessPermissions |= ( i_rProperties.CanFillInteractive ) ? 1 << 8 : 0; + nAccessPermissions |= ( i_rProperties.CanExtractForAccessibility ) ? 1 << 9 : 0; + nAccessPermissions |= ( i_rProperties.CanAssemble ) ? 1 << 10 : 0; + nAccessPermissions |= ( i_rProperties.CanPrintFull ) ? 1 << 11 : 0; + return nAccessPermissions; +} + +/************************************************************* +begin i12626 methods + +Implements Algorithm 3.2, step 1 only +*/ +void PDFWriterImpl::padPassword( std::u16string_view i_rPassword, sal_uInt8* o_pPaddedPW ) +{ + // get ansi-1252 version of the password string CHECKIT ! i12626 + OString aString( OUStringToOString( i_rPassword, RTL_TEXTENCODING_MS_1252 ) ); + + //copy the string to the target + sal_Int32 nToCopy = ( aString.getLength() < ENCRYPTED_PWD_SIZE ) ? aString.getLength() : ENCRYPTED_PWD_SIZE; + sal_Int32 nCurrentChar; + + for( nCurrentChar = 0; nCurrentChar < nToCopy; nCurrentChar++ ) + o_pPaddedPW[nCurrentChar] = static_cast<sal_uInt8>( aString[nCurrentChar] ); + + //pad it with standard byte string + sal_Int32 i,y; + for( i = nCurrentChar, y = 0 ; i < ENCRYPTED_PWD_SIZE; i++, y++ ) + o_pPaddedPW[i] = s_nPadString[y]; +} + +/********************************** +Algorithm 3.2 Compute the encryption key used + +step 1 should already be done before calling, the paThePaddedPassword parameter should contain +the padded password and must be 32 byte long, the encryption key is returned into the paEncryptionKey parameter, +it will be 16 byte long for 128 bit security; for 40 bit security only the first 5 bytes are used + +TODO: in pdf ver 1.5 and 1.6 the step 6 is different, should be implemented. See spec. + +*/ +bool PDFWriterImpl::computeEncryptionKey( EncHashTransporter* i_pTransporter, vcl::PDFWriter::PDFEncryptionProperties& io_rProperties, sal_Int32 i_nAccessPermissions ) +{ + bool bSuccess = true; + ::std::vector<unsigned char> nMD5Sum; + + // transporter contains an MD5 digest with the padded user password already + ::comphelper::Hash *const pDigest = i_pTransporter->getUDigest(); + if (pDigest) + { + //step 3 + if( ! io_rProperties.OValue.empty() ) + pDigest->update(io_rProperties.OValue.data(), io_rProperties.OValue.size()); + else + bSuccess = false; + //Step 4 + sal_uInt8 nPerm[4]; + + nPerm[0] = static_cast<sal_uInt8>(i_nAccessPermissions); + nPerm[1] = static_cast<sal_uInt8>( i_nAccessPermissions >> 8 ); + nPerm[2] = static_cast<sal_uInt8>( i_nAccessPermissions >> 16 ); + nPerm[3] = static_cast<sal_uInt8>( i_nAccessPermissions >> 24 ); + + pDigest->update(nPerm, sizeof(nPerm)); + + //step 5, get the document ID, binary form + pDigest->update(io_rProperties.DocumentIdentifier.data(), io_rProperties.DocumentIdentifier.size()); + //get the digest + nMD5Sum = pDigest->finalize(); + + //step 6, only if 128 bit + for (sal_Int32 i = 0; i < 50; i++) + { + nMD5Sum = ::comphelper::Hash::calculateHash(nMD5Sum.data(), nMD5Sum.size(), ::comphelper::HashType::MD5); + } + } + else + bSuccess = false; + + i_pTransporter->invalidate(); + + //Step 7 + if( bSuccess ) + { + io_rProperties.EncryptionKey.resize( MAXIMUM_RC4_KEY_LENGTH ); + for( sal_Int32 i = 0; i < MD5_DIGEST_SIZE; i++ ) + io_rProperties.EncryptionKey[i] = nMD5Sum[i]; + } + else + io_rProperties.EncryptionKey.clear(); + + return bSuccess; +} + +/********************************** +Algorithm 3.3 Compute the encryption dictionary /O value, save into the class data member +the step numbers down here correspond to the ones in PDF v.1.4 specification +*/ +bool PDFWriterImpl::computeODictionaryValue( const sal_uInt8* i_pPaddedOwnerPassword, + const sal_uInt8* i_pPaddedUserPassword, + std::vector< sal_uInt8 >& io_rOValue, + sal_Int32 i_nKeyLength + ) +{ + bool bSuccess = true; + + io_rOValue.resize( ENCRYPTED_PWD_SIZE ); + + rtlCipher aCipher = rtl_cipher_createARCFOUR( rtl_Cipher_ModeStream ); + if (aCipher) + { + //step 1 already done, data is in i_pPaddedOwnerPassword + //step 2 + + ::std::vector<unsigned char> nMD5Sum(::comphelper::Hash::calculateHash( + i_pPaddedOwnerPassword, ENCRYPTED_PWD_SIZE, ::comphelper::HashType::MD5)); + //step 3, only if 128 bit + if (i_nKeyLength == SECUR_128BIT_KEY) + { + sal_Int32 i; + for (i = 0; i < 50; i++) + { + nMD5Sum = ::comphelper::Hash::calculateHash(nMD5Sum.data(), nMD5Sum.size(), ::comphelper::HashType::MD5); + } + } + //Step 4, the key is in nMD5Sum + //step 5 already done, data is in i_pPaddedUserPassword + //step 6 + if (rtl_cipher_initARCFOUR( aCipher, rtl_Cipher_DirectionEncode, + nMD5Sum.data(), i_nKeyLength , nullptr, 0 ) + == rtl_Cipher_E_None) + { + // encrypt the user password using the key set above + rtl_cipher_encodeARCFOUR( aCipher, i_pPaddedUserPassword, ENCRYPTED_PWD_SIZE, // the data to be encrypted + io_rOValue.data(), sal_Int32(io_rOValue.size()) ); //encrypted data + //Step 7, only if 128 bit + if( i_nKeyLength == SECUR_128BIT_KEY ) + { + sal_uInt32 i; + size_t y; + sal_uInt8 nLocalKey[ SECUR_128BIT_KEY ]; // 16 = 128 bit key + + for( i = 1; i <= 19; i++ ) // do it 19 times, start with 1 + { + for( y = 0; y < sizeof( nLocalKey ); y++ ) + nLocalKey[y] = static_cast<sal_uInt8>( nMD5Sum[y] ^ i ); + + if (rtl_cipher_initARCFOUR( aCipher, rtl_Cipher_DirectionEncode, + nLocalKey, SECUR_128BIT_KEY, nullptr, 0 ) //destination data area, on init can be NULL + != rtl_Cipher_E_None) + { + bSuccess = false; + break; + } + rtl_cipher_encodeARCFOUR( aCipher, io_rOValue.data(), sal_Int32(io_rOValue.size()), // the data to be encrypted + io_rOValue.data(), sal_Int32(io_rOValue.size()) ); // encrypted data, can be the same as the input, encrypt "in place" + //step 8, store in class data member + } + } + } + else + bSuccess = false; + } + else + bSuccess = false; + + if( aCipher ) + rtl_cipher_destroyARCFOUR( aCipher ); + + if( ! bSuccess ) + io_rOValue.clear(); + return bSuccess; +} + +/********************************** +Algorithms 3.4 and 3.5 Compute the encryption dictionary /U value, save into the class data member, revision 2 (40 bit) or 3 (128 bit) +*/ +bool PDFWriterImpl::computeUDictionaryValue( EncHashTransporter* i_pTransporter, + vcl::PDFWriter::PDFEncryptionProperties& io_rProperties, + sal_Int32 i_nKeyLength, + sal_Int32 i_nAccessPermissions + ) +{ + bool bSuccess = true; + + io_rProperties.UValue.resize( ENCRYPTED_PWD_SIZE ); + + ::comphelper::Hash aDigest(::comphelper::HashType::MD5); + rtlCipher aCipher = rtl_cipher_createARCFOUR( rtl_Cipher_ModeStream ); + if (aCipher) + { + //step 1, common to both 3.4 and 3.5 + if( computeEncryptionKey( i_pTransporter, io_rProperties, i_nAccessPermissions ) ) + { + // prepare encryption key for object + for( sal_Int32 i = i_nKeyLength, y = 0; y < 5 ; y++ ) + io_rProperties.EncryptionKey[i++] = 0; + + //or 3.5, for 128 bit security + //step6, initialize the last 16 bytes of the encrypted user password to 0 + for(sal_uInt32 i = MD5_DIGEST_SIZE; i < sal_uInt32(io_rProperties.UValue.size()); i++) + io_rProperties.UValue[i] = 0; + //steps 2 and 3 + aDigest.update(s_nPadString, sizeof(s_nPadString)); + aDigest.update(io_rProperties.DocumentIdentifier.data(), io_rProperties.DocumentIdentifier.size()); + + ::std::vector<unsigned char> const nMD5Sum(aDigest.finalize()); + //Step 4 + rtl_cipher_initARCFOUR( aCipher, rtl_Cipher_DirectionEncode, + io_rProperties.EncryptionKey.data(), SECUR_128BIT_KEY, nullptr, 0 ); //destination data area + rtl_cipher_encodeARCFOUR( aCipher, nMD5Sum.data(), nMD5Sum.size(), // the data to be encrypted + io_rProperties.UValue.data(), SECUR_128BIT_KEY ); //encrypted data, stored in class data member + //step 5 + sal_uInt32 i; + size_t y; + sal_uInt8 nLocalKey[SECUR_128BIT_KEY]; + + for( i = 1; i <= 19; i++ ) // do it 19 times, start with 1 + { + for( y = 0; y < sizeof( nLocalKey ) ; y++ ) + nLocalKey[y] = static_cast<sal_uInt8>( io_rProperties.EncryptionKey[y] ^ i ); + + rtl_cipher_initARCFOUR( aCipher, rtl_Cipher_DirectionEncode, + nLocalKey, SECUR_128BIT_KEY, // key and key length + nullptr, 0 ); //destination data area, on init can be NULL + rtl_cipher_encodeARCFOUR( aCipher, io_rProperties.UValue.data(), SECUR_128BIT_KEY, // the data to be encrypted + io_rProperties.UValue.data(), SECUR_128BIT_KEY ); // encrypted data, can be the same as the input, encrypt "in place" + } + } + else + bSuccess = false; + } + else + bSuccess = false; + + if( aCipher ) + rtl_cipher_destroyARCFOUR( aCipher ); + + if( ! bSuccess ) + io_rProperties.UValue.clear(); + return bSuccess; +} + +/* end i12626 methods */ + +const tools::Long unsetRun[256] = +{ + 8, 7, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, /* 0x00 - 0x0f */ + 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, /* 0x10 - 0x1f */ + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, /* 0x20 - 0x2f */ + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, /* 0x30 - 0x3f */ + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* 0x40 - 0x4f */ + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* 0x50 - 0x5f */ + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* 0x60 - 0x6f */ + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* 0x70 - 0x7f */ + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x80 - 0x8f */ + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x90 - 0x9f */ + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xa0 - 0xaf */ + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xb0 - 0xbf */ + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xc0 - 0xcf */ + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xd0 - 0xdf */ + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xe0 - 0xef */ + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xf0 - 0xff */ +}; + +const tools::Long setRun[256] = +{ + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x00 - 0x0f */ + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x10 - 0x1f */ + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x20 - 0x2f */ + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x30 - 0x3f */ + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x40 - 0x4f */ + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x50 - 0x5f */ + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x60 - 0x6f */ + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x70 - 0x7f */ + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* 0x80 - 0x8f */ + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* 0x90 - 0x9f */ + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* 0xa0 - 0xaf */ + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* 0xb0 - 0xbf */ + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, /* 0xc0 - 0xcf */ + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, /* 0xd0 - 0xdf */ + 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, /* 0xe0 - 0xef */ + 4, 4, 4, 4, 4, 4, 4, 4, 5, 5, 5, 5, 6, 6, 7, 8, /* 0xf0 - 0xff */ +}; + +static bool isSet( const Scanline i_pLine, tools::Long i_nIndex ) +{ + return (i_pLine[ i_nIndex/8 ] & (0x80 >> (i_nIndex&7))) != 0; +} + +static tools::Long findBitRunImpl( const Scanline i_pLine, tools::Long i_nStartIndex, tools::Long i_nW, bool i_bSet ) +{ + tools::Long nIndex = i_nStartIndex; + if( nIndex < i_nW ) + { + const sal_uInt8 * pByte = i_pLine + (nIndex/8); + sal_uInt8 nByte = *pByte; + + // run up to byte boundary + tools::Long nBitInByte = (nIndex & 7); + if( nBitInByte ) + { + sal_uInt8 nMask = 0x80 >> nBitInByte; + while( nBitInByte != 8 ) + { + if( (nByte & nMask) != (i_bSet ? nMask : 0) ) + return std::min(nIndex, i_nW); + nMask = nMask >> 1; + nBitInByte++; + nIndex++; + } + if( nIndex < i_nW ) + { + pByte++; + nByte = *pByte; + } + } + + sal_uInt8 nRunByte; + const tools::Long* pRunTable; + if( i_bSet ) + { + nRunByte = 0xff; + pRunTable = setRun; + } + else + { + nRunByte = 0; + pRunTable = unsetRun; + } + + if( nIndex < i_nW ) + { + while( nByte == nRunByte ) + { + nIndex += 8; + + if (nIndex >= i_nW) + break; + + pByte++; + nByte = *pByte; + } + } + + if( nIndex < i_nW ) + { + nIndex += pRunTable[nByte]; + } + } + return std::min(nIndex, i_nW); +} + +static tools::Long findBitRun(const Scanline i_pLine, tools::Long i_nStartIndex, tools::Long i_nW, bool i_bSet) +{ + if (i_nStartIndex < 0) + return i_nW; + + return findBitRunImpl(i_pLine, i_nStartIndex, i_nW, i_bSet); +} + +static tools::Long findBitRun(const Scanline i_pLine, tools::Long i_nStartIndex, tools::Long i_nW) +{ + if (i_nStartIndex < 0) + return i_nW; + + const bool bSet = i_nStartIndex < i_nW && isSet(i_pLine, i_nStartIndex); + + return findBitRunImpl(i_pLine, i_nStartIndex, i_nW, bSet); +} + +struct BitStreamState +{ + sal_uInt8 mnBuffer; + sal_uInt32 mnNextBitPos; + + BitStreamState() + : mnBuffer( 0 ) + , mnNextBitPos( 8 ) + { + } + + const sal_uInt8& getByte() const { return mnBuffer; } + void flush() { mnNextBitPos = 8; mnBuffer = 0; } +}; + +void PDFWriterImpl::putG4Bits( sal_uInt32 i_nLength, sal_uInt32 i_nCode, BitStreamState& io_rState ) +{ + while( i_nLength > io_rState.mnNextBitPos ) + { + io_rState.mnBuffer |= static_cast<sal_uInt8>( i_nCode >> (i_nLength - io_rState.mnNextBitPos) ); + i_nLength -= io_rState.mnNextBitPos; + writeBuffer( &io_rState.getByte(), 1 ); + io_rState.flush(); + } + assert(i_nLength < 9); + static const unsigned int msbmask[9] = { 0x00, 0x01, 0x03, 0x07, 0x0f, 0x1f, 0x3f, 0x7f, 0xff }; + io_rState.mnBuffer |= static_cast<sal_uInt8>( (i_nCode & msbmask[i_nLength]) << (io_rState.mnNextBitPos - i_nLength) ); + io_rState.mnNextBitPos -= i_nLength; + if( io_rState.mnNextBitPos == 0 ) + { + writeBuffer( &io_rState.getByte(), 1 ); + io_rState.flush(); + } +} + +namespace { + +struct PixelCode +{ + sal_uInt32 mnEncodedPixels; + sal_uInt32 mnCodeBits; + sal_uInt32 mnCode; +}; + +} + +const PixelCode WhitePixelCodes[] = +{ + { 0, 8, 0x35 }, // 0011 0101 + { 1, 6, 0x7 }, // 0001 11 + { 2, 4, 0x7 }, // 0111 + { 3, 4, 0x8 }, // 1000 + { 4, 4, 0xB }, // 1011 + { 5, 4, 0xC }, // 1100 + { 6, 4, 0xE }, // 1110 + { 7, 4, 0xF }, // 1111 + { 8, 5, 0x13 }, // 1001 1 + { 9, 5, 0x14 }, // 1010 0 + { 10, 5, 0x7 }, // 0011 1 + { 11, 5, 0x8 }, // 0100 0 + { 12, 6, 0x8 }, // 0010 00 + { 13, 6, 0x3 }, // 0000 11 + { 14, 6, 0x34 }, // 1101 00 + { 15, 6, 0x35 }, // 1101 01 + { 16, 6, 0x2A }, // 1010 10 + { 17, 6, 0x2B }, // 1010 11 + { 18, 7, 0x27 }, // 0100 111 + { 19, 7, 0xC }, // 0001 100 + { 20, 7, 0x8 }, // 0001 000 + { 21, 7, 0x17 }, // 0010 111 + { 22, 7, 0x3 }, // 0000 011 + { 23, 7, 0x4 }, // 0000 100 + { 24, 7, 0x28 }, // 0101 000 + { 25, 7, 0x2B }, // 0101 011 + { 26, 7, 0x13 }, // 0010 011 + { 27, 7, 0x24 }, // 0100 100 + { 28, 7, 0x18 }, // 0011 000 + { 29, 8, 0x2 }, // 0000 0010 + { 30, 8, 0x3 }, // 0000 0011 + { 31, 8, 0x1A }, // 0001 1010 + { 32, 8, 0x1B }, // 0001 1011 + { 33, 8, 0x12 }, // 0001 0010 + { 34, 8, 0x13 }, // 0001 0011 + { 35, 8, 0x14 }, // 0001 0100 + { 36, 8, 0x15 }, // 0001 0101 + { 37, 8, 0x16 }, // 0001 0110 + { 38, 8, 0x17 }, // 0001 0111 + { 39, 8, 0x28 }, // 0010 1000 + { 40, 8, 0x29 }, // 0010 1001 + { 41, 8, 0x2A }, // 0010 1010 + { 42, 8, 0x2B }, // 0010 1011 + { 43, 8, 0x2C }, // 0010 1100 + { 44, 8, 0x2D }, // 0010 1101 + { 45, 8, 0x4 }, // 0000 0100 + { 46, 8, 0x5 }, // 0000 0101 + { 47, 8, 0xA }, // 0000 1010 + { 48, 8, 0xB }, // 0000 1011 + { 49, 8, 0x52 }, // 0101 0010 + { 50, 8, 0x53 }, // 0101 0011 + { 51, 8, 0x54 }, // 0101 0100 + { 52, 8, 0x55 }, // 0101 0101 + { 53, 8, 0x24 }, // 0010 0100 + { 54, 8, 0x25 }, // 0010 0101 + { 55, 8, 0x58 }, // 0101 1000 + { 56, 8, 0x59 }, // 0101 1001 + { 57, 8, 0x5A }, // 0101 1010 + { 58, 8, 0x5B }, // 0101 1011 + { 59, 8, 0x4A }, // 0100 1010 + { 60, 8, 0x4B }, // 0100 1011 + { 61, 8, 0x32 }, // 0011 0010 + { 62, 8, 0x33 }, // 0011 0011 + { 63, 8, 0x34 }, // 0011 0100 + { 64, 5, 0x1B }, // 1101 1 + { 128, 5, 0x12 }, // 1001 0 + { 192, 6, 0x17 }, // 0101 11 + { 256, 7, 0x37 }, // 0110 111 + { 320, 8, 0x36 }, // 0011 0110 + { 384, 8, 0x37 }, // 0011 0111 + { 448, 8, 0x64 }, // 0110 0100 + { 512, 8, 0x65 }, // 0110 0101 + { 576, 8, 0x68 }, // 0110 1000 + { 640, 8, 0x67 }, // 0110 0111 + { 704, 9, 0xCC }, // 0110 0110 0 + { 768, 9, 0xCD }, // 0110 0110 1 + { 832, 9, 0xD2 }, // 0110 1001 0 + { 896, 9, 0xD3 }, // 0110 1001 1 + { 960, 9, 0xD4 }, // 0110 1010 0 + { 1024, 9, 0xD5 }, // 0110 1010 1 + { 1088, 9, 0xD6 }, // 0110 1011 0 + { 1152, 9, 0xD7 }, // 0110 1011 1 + { 1216, 9, 0xD8 }, // 0110 1100 0 + { 1280, 9, 0xD9 }, // 0110 1100 1 + { 1344, 9, 0xDA }, // 0110 1101 0 + { 1408, 9, 0xDB }, // 0110 1101 1 + { 1472, 9, 0x98 }, // 0100 1100 0 + { 1536, 9, 0x99 }, // 0100 1100 1 + { 1600, 9, 0x9A }, // 0100 1101 0 + { 1664, 6, 0x18 }, // 0110 00 + { 1728, 9, 0x9B }, // 0100 1101 1 + { 1792, 11, 0x8 }, // 0000 0001 000 + { 1856, 11, 0xC }, // 0000 0001 100 + { 1920, 11, 0xD }, // 0000 0001 101 + { 1984, 12, 0x12 }, // 0000 0001 0010 + { 2048, 12, 0x13 }, // 0000 0001 0011 + { 2112, 12, 0x14 }, // 0000 0001 0100 + { 2176, 12, 0x15 }, // 0000 0001 0101 + { 2240, 12, 0x16 }, // 0000 0001 0110 + { 2304, 12, 0x17 }, // 0000 0001 0111 + { 2368, 12, 0x1C }, // 0000 0001 1100 + { 2432, 12, 0x1D }, // 0000 0001 1101 + { 2496, 12, 0x1E }, // 0000 0001 1110 + { 2560, 12, 0x1F } // 0000 0001 1111 +}; + +const PixelCode BlackPixelCodes[] = +{ + { 0, 10, 0x37 }, // 0000 1101 11 + { 1, 3, 0x2 }, // 010 + { 2, 2, 0x3 }, // 11 + { 3, 2, 0x2 }, // 10 + { 4, 3, 0x3 }, // 011 + { 5, 4, 0x3 }, // 0011 + { 6, 4, 0x2 }, // 0010 + { 7, 5, 0x3 }, // 0001 1 + { 8, 6, 0x5 }, // 0001 01 + { 9, 6, 0x4 }, // 0001 00 + { 10, 7, 0x4 }, // 0000 100 + { 11, 7, 0x5 }, // 0000 101 + { 12, 7, 0x7 }, // 0000 111 + { 13, 8, 0x4 }, // 0000 0100 + { 14, 8, 0x7 }, // 0000 0111 + { 15, 9, 0x18 }, // 0000 1100 0 + { 16, 10, 0x17 }, // 0000 0101 11 + { 17, 10, 0x18 }, // 0000 0110 00 + { 18, 10, 0x8 }, // 0000 0010 00 + { 19, 11, 0x67 }, // 0000 1100 111 + { 20, 11, 0x68 }, // 0000 1101 000 + { 21, 11, 0x6C }, // 0000 1101 100 + { 22, 11, 0x37 }, // 0000 0110 111 + { 23, 11, 0x28 }, // 0000 0101 000 + { 24, 11, 0x17 }, // 0000 0010 111 + { 25, 11, 0x18 }, // 0000 0011 000 + { 26, 12, 0xCA }, // 0000 1100 1010 + { 27, 12, 0xCB }, // 0000 1100 1011 + { 28, 12, 0xCC }, // 0000 1100 1100 + { 29, 12, 0xCD }, // 0000 1100 1101 + { 30, 12, 0x68 }, // 0000 0110 1000 + { 31, 12, 0x69 }, // 0000 0110 1001 + { 32, 12, 0x6A }, // 0000 0110 1010 + { 33, 12, 0x6B }, // 0000 0110 1011 + { 34, 12, 0xD2 }, // 0000 1101 0010 + { 35, 12, 0xD3 }, // 0000 1101 0011 + { 36, 12, 0xD4 }, // 0000 1101 0100 + { 37, 12, 0xD5 }, // 0000 1101 0101 + { 38, 12, 0xD6 }, // 0000 1101 0110 + { 39, 12, 0xD7 }, // 0000 1101 0111 + { 40, 12, 0x6C }, // 0000 0110 1100 + { 41, 12, 0x6D }, // 0000 0110 1101 + { 42, 12, 0xDA }, // 0000 1101 1010 + { 43, 12, 0xDB }, // 0000 1101 1011 + { 44, 12, 0x54 }, // 0000 0101 0100 + { 45, 12, 0x55 }, // 0000 0101 0101 + { 46, 12, 0x56 }, // 0000 0101 0110 + { 47, 12, 0x57 }, // 0000 0101 0111 + { 48, 12, 0x64 }, // 0000 0110 0100 + { 49, 12, 0x65 }, // 0000 0110 0101 + { 50, 12, 0x52 }, // 0000 0101 0010 + { 51, 12, 0x53 }, // 0000 0101 0011 + { 52, 12, 0x24 }, // 0000 0010 0100 + { 53, 12, 0x37 }, // 0000 0011 0111 + { 54, 12, 0x38 }, // 0000 0011 1000 + { 55, 12, 0x27 }, // 0000 0010 0111 + { 56, 12, 0x28 }, // 0000 0010 1000 + { 57, 12, 0x58 }, // 0000 0101 1000 + { 58, 12, 0x59 }, // 0000 0101 1001 + { 59, 12, 0x2B }, // 0000 0010 1011 + { 60, 12, 0x2C }, // 0000 0010 1100 + { 61, 12, 0x5A }, // 0000 0101 1010 + { 62, 12, 0x66 }, // 0000 0110 0110 + { 63, 12, 0x67 }, // 0000 0110 0111 + { 64, 10, 0xF }, // 0000 0011 11 + { 128, 12, 0xC8 }, // 0000 1100 1000 + { 192, 12, 0xC9 }, // 0000 1100 1001 + { 256, 12, 0x5B }, // 0000 0101 1011 + { 320, 12, 0x33 }, // 0000 0011 0011 + { 384, 12, 0x34 }, // 0000 0011 0100 + { 448, 12, 0x35 }, // 0000 0011 0101 + { 512, 13, 0x6C }, // 0000 0011 0110 0 + { 576, 13, 0x6D }, // 0000 0011 0110 1 + { 640, 13, 0x4A }, // 0000 0010 0101 0 + { 704, 13, 0x4B }, // 0000 0010 0101 1 + { 768, 13, 0x4C }, // 0000 0010 0110 0 + { 832, 13, 0x4D }, // 0000 0010 0110 1 + { 896, 13, 0x72 }, // 0000 0011 1001 0 + { 960, 13, 0x73 }, // 0000 0011 1001 1 + { 1024, 13, 0x74 }, // 0000 0011 1010 0 + { 1088, 13, 0x75 }, // 0000 0011 1010 1 + { 1152, 13, 0x76 }, // 0000 0011 1011 0 + { 1216, 13, 0x77 }, // 0000 0011 1011 1 + { 1280, 13, 0x52 }, // 0000 0010 1001 0 + { 1344, 13, 0x53 }, // 0000 0010 1001 1 + { 1408, 13, 0x54 }, // 0000 0010 1010 0 + { 1472, 13, 0x55 }, // 0000 0010 1010 1 + { 1536, 13, 0x5A }, // 0000 0010 1101 0 + { 1600, 13, 0x5B }, // 0000 0010 1101 1 + { 1664, 13, 0x64 }, // 0000 0011 0010 0 + { 1728, 13, 0x65 }, // 0000 0011 0010 1 + { 1792, 11, 0x8 }, // 0000 0001 000 + { 1856, 11, 0xC }, // 0000 0001 100 + { 1920, 11, 0xD }, // 0000 0001 101 + { 1984, 12, 0x12 }, // 0000 0001 0010 + { 2048, 12, 0x13 }, // 0000 0001 0011 + { 2112, 12, 0x14 }, // 0000 0001 0100 + { 2176, 12, 0x15 }, // 0000 0001 0101 + { 2240, 12, 0x16 }, // 0000 0001 0110 + { 2304, 12, 0x17 }, // 0000 0001 0111 + { 2368, 12, 0x1C }, // 0000 0001 1100 + { 2432, 12, 0x1D }, // 0000 0001 1101 + { 2496, 12, 0x1E }, // 0000 0001 1110 + { 2560, 12, 0x1F } // 0000 0001 1111 +}; + +void PDFWriterImpl::putG4Span( tools::Long i_nSpan, bool i_bWhitePixel, BitStreamState& io_rState ) +{ + const PixelCode* pTable = i_bWhitePixel ? WhitePixelCodes : BlackPixelCodes; + // maximum encoded span is 2560 consecutive pixels + while( i_nSpan > 2623 ) + { + // write 2560 bits, that is entry (63 + (2560 >> 6)) == 103 in the appropriate table + putG4Bits( pTable[103].mnCodeBits, pTable[103].mnCode, io_rState ); + i_nSpan -= pTable[103].mnEncodedPixels; + } + // write multiples of 64 pixels up to 2560 + if( i_nSpan > 63 ) + { + sal_uInt32 nTabIndex = 63 + (i_nSpan >> 6); + OSL_ASSERT( pTable[nTabIndex].mnEncodedPixels == static_cast<sal_uInt32>(64*(i_nSpan >> 6)) ); + putG4Bits( pTable[nTabIndex].mnCodeBits, pTable[nTabIndex].mnCode, io_rState ); + i_nSpan -= pTable[nTabIndex].mnEncodedPixels; + } + putG4Bits( pTable[i_nSpan].mnCodeBits, pTable[i_nSpan].mnCode, io_rState ); +} + +void PDFWriterImpl::writeG4Stream( BitmapReadAccess const * i_pBitmap ) +{ + tools::Long nW = i_pBitmap->Width(); + tools::Long nH = i_pBitmap->Height(); + if( nW <= 0 || nH <= 0 ) + return; + if( i_pBitmap->GetBitCount() != 1 ) + return; + + BitStreamState aBitState; + + // the first reference line is virtual and completely empty + std::unique_ptr<sal_uInt8[]> pFirstRefLine(new sal_uInt8[nW/8 + 1]); + memset(pFirstRefLine.get(), 0, nW/8 + 1); + Scanline pRefLine = pFirstRefLine.get(); + for( tools::Long nY = 0; nY < nH; nY++ ) + { + const Scanline pCurLine = i_pBitmap->GetScanline( nY ); + tools::Long nLineIndex = 0; + bool bRunSet = (*pCurLine & 0x80) != 0; + bool bRefSet = (*pRefLine & 0x80) != 0; + tools::Long nRunIndex1 = bRunSet ? 0 : findBitRun( pCurLine, 0, nW, bRunSet ); + tools::Long nRefIndex1 = bRefSet ? 0 : findBitRun( pRefLine, 0, nW, bRefSet ); + for( ; nLineIndex < nW; ) + { + tools::Long nRefIndex2 = findBitRun( pRefLine, nRefIndex1, nW ); + if( nRefIndex2 >= nRunIndex1 ) + { + tools::Long nDiff = nRefIndex1 - nRunIndex1; + if( -3 <= nDiff && nDiff <= 3 ) + { // vertical coding + static const struct + { + sal_uInt32 mnCodeBits; + sal_uInt32 mnCode; + } VerticalCodes[7] = { + { 7, 0x03 }, // 0000 011 + { 6, 0x03 }, // 0000 11 + { 3, 0x03 }, // 011 + { 1, 0x1 }, // 1 + { 3, 0x2 }, // 010 + { 6, 0x02 }, // 0000 10 + { 7, 0x02 } // 0000 010 + }; + // convert to index + nDiff += 3; + + // emit diff code + putG4Bits( VerticalCodes[nDiff].mnCodeBits, VerticalCodes[nDiff].mnCode, aBitState ); + nLineIndex = nRunIndex1; + } + else + { // difference too large, horizontal coding + // emit horz code 001 + putG4Bits( 3, 0x1, aBitState ); + tools::Long nRunIndex2 = findBitRun( pCurLine, nRunIndex1, nW ); + bool bWhiteFirst = ( nLineIndex + nRunIndex1 == 0 || ! isSet( pCurLine, nLineIndex ) ); + putG4Span( nRunIndex1 - nLineIndex, bWhiteFirst, aBitState ); + putG4Span( nRunIndex2 - nRunIndex1, ! bWhiteFirst, aBitState ); + nLineIndex = nRunIndex2; + } + } + else + { // emit pass code 0001 + putG4Bits( 4, 0x1, aBitState ); + nLineIndex = nRefIndex2; + } + if( nLineIndex < nW ) + { + bool bSet = isSet( pCurLine, nLineIndex ); + nRunIndex1 = findBitRun( pCurLine, nLineIndex, nW, bSet ); + nRefIndex1 = findBitRun( pRefLine, nLineIndex, nW, ! bSet ); + nRefIndex1 = findBitRun( pRefLine, nRefIndex1, nW, bSet ); + } + } + + // the current line is the reference for the next line + pRefLine = pCurLine; + } + // terminate strip with EOFB + putG4Bits( 12, 1, aBitState ); + putG4Bits( 12, 1, aBitState ); + if( aBitState.mnNextBitPos != 8 ) + { + writeBuffer( &aBitState.getByte(), 1 ); + aBitState.flush(); + } +} + +void PDFWriterImpl::DrawHatchLine_DrawLine(const Point& rStartPoint, const Point& rEndPoint) +{ + drawLine(rStartPoint, rEndPoint); +} + +static bool lcl_canUsePDFAxialShading(const Gradient& rGradient) { + switch (rGradient.GetStyle()) + { + case GradientStyle::Linear: + case GradientStyle::Axial: + break; + default: + return false; + } + + // TODO: handle step count + return rGradient.GetSteps() <= 0; +} + +void PDFWriterImpl::ImplClearFontData(bool bNewFontLists) +{ + VirtualDevice::ImplClearFontData(bNewFontLists); + if (bNewFontLists && AcquireGraphics()) + { + ReleaseFontCollection(); + ReleaseFontCache(); + } +} + +void PDFWriterImpl::ImplRefreshFontData(bool bNewFontLists) +{ + if (bNewFontLists && AcquireGraphics()) + { + SetFontCollectionFromSVData(); + ResetNewFontCache(); + } +} + +vcl::Region PDFWriterImpl::ClipToDeviceBounds(vcl::Region aRegion) const +{ + return aRegion; +} + + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |