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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/config.h>
#include <tools/poly.hxx>
#include <vcl/bitmapaccess.hxx>
#include <vcl/virdev.hxx>
#include <vcl/wrkwin.hxx>
#include <svl/solar.hrc>
#include <sfx2/docfile.hxx>
#include <sfx2/app.hxx>
#include <svx/xoutbmp.hxx>
#include <vcl/dibtools.hxx>
#include <vcl/FilterConfigItem.hxx>
#include <vcl/graphicfilter.hxx>
#include <vcl/cvtgrf.hxx>
#include <sax/tools/converter.hxx>
#include <memory>
#define FORMAT_BMP "bmp"
#define FORMAT_GIF "gif"
#define FORMAT_JPG "jpg"
#define FORMAT_PNG "png"
using namespace com::sun::star;
GraphicFilter* XOutBitmap::pGrfFilter = nullptr;
Animation XOutBitmap::MirrorAnimation( const Animation& rAnimation, bool bHMirr, bool bVMirr )
{
Animation aNewAnim( rAnimation );
if( bHMirr || bVMirr )
{
const Size& rGlobalSize = aNewAnim.GetDisplaySizePixel();
BmpMirrorFlags nMirrorFlags = BmpMirrorFlags::NONE;
if( bHMirr )
nMirrorFlags |= BmpMirrorFlags::Horizontal;
if( bVMirr )
nMirrorFlags |= BmpMirrorFlags::Vertical;
for( sal_uInt16 i = 0, nCount = aNewAnim.Count(); i < nCount; i++ )
{
AnimationBitmap aAnimBmp( aNewAnim.Get( i ) );
// mirror the BitmapEx
aAnimBmp.aBmpEx.Mirror( nMirrorFlags );
// Adjust the positions inside the whole bitmap
if( bHMirr )
aAnimBmp.aPosPix.X() = rGlobalSize.Width() - aAnimBmp.aPosPix.X() -
aAnimBmp.aSizePix.Width();
if( bVMirr )
aAnimBmp.aPosPix.Y() = rGlobalSize.Height() - aAnimBmp.aPosPix.Y() -
aAnimBmp.aSizePix.Height();
aNewAnim.Replace( aAnimBmp, i );
}
}
return aNewAnim;
}
Graphic XOutBitmap::MirrorGraphic( const Graphic& rGraphic, const BmpMirrorFlags nMirrorFlags )
{
Graphic aRetGraphic;
if( nMirrorFlags != BmpMirrorFlags::NONE )
{
if( rGraphic.IsAnimated() )
{
aRetGraphic = MirrorAnimation( rGraphic.GetAnimation(),
bool( nMirrorFlags & BmpMirrorFlags::Horizontal ),
bool( nMirrorFlags & BmpMirrorFlags::Vertical ) );
}
else
{
if( rGraphic.IsTransparent() )
{
BitmapEx aBmpEx( rGraphic.GetBitmapEx() );
aBmpEx.Mirror( nMirrorFlags );
aRetGraphic = aBmpEx;
}
else
{
Bitmap aBmp( rGraphic.GetBitmap() );
aBmp.Mirror( nMirrorFlags );
aRetGraphic = aBmp;
}
}
}
else
aRetGraphic = rGraphic;
return aRetGraphic;
}
ErrCode XOutBitmap::WriteGraphic( const Graphic& rGraphic, OUString& rFileName,
const OUString& rFilterName, const XOutFlags nFlags,
const Size* pMtfSize_100TH_MM,
const css::uno::Sequence< css::beans::PropertyValue >* pFilterData )
{
if( rGraphic.GetType() != GraphicType::NONE )
{
INetURLObject aURL( rFileName );
Graphic aGraphic;
OUString aExt;
GraphicFilter& rFilter = GraphicFilter::GetGraphicFilter();
ErrCode nErr = ERRCODE_GRFILTER_FILTERERROR;
sal_uInt16 nFilter = GRFILTER_FORMAT_NOTFOUND;
bool bTransparent = rGraphic.IsTransparent(), bAnimated = rGraphic.IsAnimated();
DBG_ASSERT( aURL.GetProtocol() != INetProtocol::NotValid, "XOutBitmap::WriteGraphic(...): invalid URL" );
// calculate correct file name
if( !( nFlags & XOutFlags::DontExpandFilename ) )
{
OUString aName( aURL.getBase() );
aName += "_";
aName += aURL.getExtension();
aName += "_";
OUString aStr( OUString::number( rGraphic.GetChecksum(), 16 ) );
if ( aStr[0] == '-' )
aStr = "m" + aStr.copy(1);
aName += aStr;
aURL.setBase( aName );
}
// #i121128# use shortcut to write Vector Graphic Data data in original form (if possible)
const VectorGraphicDataPtr& aVectorGraphicDataPtr(rGraphic.getVectorGraphicData());
if(aVectorGraphicDataPtr.get()
&& aVectorGraphicDataPtr->getVectorGraphicDataArrayLength())
{
const bool bIsSvg(rFilterName.equalsIgnoreAsciiCase("svg") && VectorGraphicDataType::Svg == aVectorGraphicDataPtr->getVectorGraphicDataType());
const bool bIsWmf(rFilterName.equalsIgnoreAsciiCase("wmf") && VectorGraphicDataType::Wmf == aVectorGraphicDataPtr->getVectorGraphicDataType());
const bool bIsEmf(rFilterName.equalsIgnoreAsciiCase("emf") && VectorGraphicDataType::Emf == aVectorGraphicDataPtr->getVectorGraphicDataType());
if (bIsSvg || bIsWmf || bIsEmf)
{
if (!(nFlags & XOutFlags::DontAddExtension))
{
aURL.setExtension(rFilterName);
}
rFileName = aURL.GetMainURL(INetURLObject::DecodeMechanism::NONE);
SfxMedium aMedium(aURL.GetMainURL(INetURLObject::DecodeMechanism::NONE), StreamMode::WRITE | StreamMode::SHARE_DENYNONE | StreamMode::TRUNC);
SvStream* pOStm = aMedium.GetOutStream();
if (pOStm)
{
pOStm->WriteBytes(aVectorGraphicDataPtr->getVectorGraphicDataArray().getConstArray(), aVectorGraphicDataPtr->getVectorGraphicDataArrayLength());
aMedium.Commit();
if (!aMedium.GetError())
{
nErr = ERRCODE_NONE;
}
}
}
}
// Write PDF data in original form if possible.
if (rGraphic.getPdfData().hasElements() && rFilterName.equalsIgnoreAsciiCase("pdf"))
{
if (!(nFlags & XOutFlags::DontAddExtension))
aURL.setExtension(rFilterName);
rFileName = aURL.GetMainURL(INetURLObject::DecodeMechanism::NONE);
SfxMedium aMedium(aURL.GetMainURL(INetURLObject::DecodeMechanism::NONE), StreamMode::WRITE|StreamMode::SHARE_DENYNONE|StreamMode::TRUNC);
if (SvStream* pOutStream = aMedium.GetOutStream())
{
uno::Sequence<sal_Int8> aPdfData = rGraphic.getPdfData();
pOutStream->WriteBytes(aPdfData.getConstArray(), aPdfData.getLength());
aMedium.Commit();
if (!aMedium.GetError())
nErr = ERRCODE_NONE;
}
}
if( ERRCODE_NONE != nErr )
{
if( ( nFlags & XOutFlags::UseNativeIfPossible ) &&
!( nFlags & XOutFlags::MirrorHorz ) &&
!( nFlags & XOutFlags::MirrorVert ) &&
( rGraphic.GetType() != GraphicType::GdiMetafile ) && rGraphic.IsLink() )
{
// try to write native link
const GfxLink aGfxLink( rGraphic.GetLink() );
switch( aGfxLink.GetType() )
{
case GfxLinkType::NativeGif: aExt = FORMAT_GIF; break;
// #i15508# added BMP type for better exports (no call/trigger found, prob used in HTML export)
case GfxLinkType::NativeBmp: aExt = FORMAT_BMP; break;
case GfxLinkType::NativeJpg: aExt = FORMAT_JPG; break;
case GfxLinkType::NativePng: aExt = FORMAT_PNG; break;
default:
break;
}
if( !aExt.isEmpty() )
{
if( !(nFlags & XOutFlags::DontAddExtension) )
aURL.setExtension( aExt );
rFileName = aURL.GetMainURL( INetURLObject::DecodeMechanism::NONE );
SfxMedium aMedium(aURL.GetMainURL(INetURLObject::DecodeMechanism::NONE), StreamMode::WRITE | StreamMode::SHARE_DENYNONE | StreamMode::TRUNC);
SvStream* pOStm = aMedium.GetOutStream();
if( pOStm && aGfxLink.GetDataSize() && aGfxLink.GetData() )
{
pOStm->WriteBytes(aGfxLink.GetData(), aGfxLink.GetDataSize());
aMedium.Commit();
if( !aMedium.GetError() )
nErr = ERRCODE_NONE;
}
}
}
}
if( ERRCODE_NONE != nErr )
{
OUString aFilter( rFilterName );
bool bWriteTransGrf = ( aFilter.equalsIgnoreAsciiCase( "transgrf" ) ) ||
( aFilter.equalsIgnoreAsciiCase( "gif" ) ) ||
( nFlags & XOutFlags::UseGifIfPossible ) ||
( ( nFlags & XOutFlags::UseGifIfSensible ) && ( bAnimated || bTransparent ) );
// get filter and extension
if( bWriteTransGrf )
aFilter = FORMAT_GIF;
nFilter = rFilter.GetExportFormatNumberForShortName( aFilter );
if( GRFILTER_FORMAT_NOTFOUND == nFilter )
{
nFilter = rFilter.GetExportFormatNumberForShortName( FORMAT_PNG );
if( GRFILTER_FORMAT_NOTFOUND == nFilter )
nFilter = rFilter.GetExportFormatNumberForShortName( FORMAT_BMP );
}
if( GRFILTER_FORMAT_NOTFOUND != nFilter )
{
aExt = rFilter.GetExportFormatShortName( nFilter ).toAsciiLowerCase();
if( bWriteTransGrf )
{
if( bAnimated )
aGraphic = rGraphic;
else
{
if( pMtfSize_100TH_MM && ( rGraphic.GetType() != GraphicType::Bitmap ) )
{
ScopedVclPtrInstance< VirtualDevice > pVDev;
const Size aSize(pVDev->LogicToPixel(*pMtfSize_100TH_MM, MapMode(MapUnit::Map100thMM)));
if( pVDev->SetOutputSizePixel( aSize ) )
{
const Wallpaper aWallpaper( pVDev->GetBackground() );
const Point aPt;
pVDev->SetBackground( Wallpaper( Color( COL_BLACK ) ) );
pVDev->Erase();
rGraphic.Draw( pVDev.get(), aPt, aSize );
const Bitmap aBitmap( pVDev->GetBitmap( aPt, aSize ) );
pVDev->SetBackground( aWallpaper );
pVDev->Erase();
rGraphic.Draw( pVDev.get(), aPt, aSize );
pVDev->SetRasterOp( RasterOp::Xor );
pVDev->DrawBitmap( aPt, aSize, aBitmap );
aGraphic = BitmapEx( aBitmap, pVDev->GetBitmap( aPt, aSize ) );
}
else
aGraphic = rGraphic.GetBitmapEx();
}
else
aGraphic = rGraphic.GetBitmapEx();
}
}
else
{
if( pMtfSize_100TH_MM && ( rGraphic.GetType() != GraphicType::Bitmap ) )
{
ScopedVclPtrInstance< VirtualDevice > pVDev;
const Size aSize(pVDev->LogicToPixel(*pMtfSize_100TH_MM, MapMode(MapUnit::Map100thMM)));
if( pVDev->SetOutputSizePixel( aSize ) )
{
rGraphic.Draw( pVDev.get(), Point(), aSize );
aGraphic = pVDev->GetBitmap( Point(), aSize );
}
else
aGraphic = rGraphic.GetBitmap();
}
else
aGraphic = rGraphic.GetBitmap();
}
// mirror?
if( ( nFlags & XOutFlags::MirrorHorz ) || ( nFlags & XOutFlags::MirrorVert ) )
{
BmpMirrorFlags nBmpMirrorFlags = BmpMirrorFlags::NONE;
if( nFlags & XOutFlags::MirrorHorz )
nBmpMirrorFlags |= BmpMirrorFlags::Horizontal;
if( nFlags & XOutFlags::MirrorVert )
nBmpMirrorFlags |= BmpMirrorFlags::Vertical;
aGraphic = MirrorGraphic( aGraphic, nBmpMirrorFlags );
}
if( ( GRFILTER_FORMAT_NOTFOUND != nFilter ) && ( aGraphic.GetType() != GraphicType::NONE ) )
{
if( !(nFlags & XOutFlags::DontAddExtension) )
aURL.setExtension( aExt );
rFileName = aURL.GetMainURL( INetURLObject::DecodeMechanism::NONE );
nErr = ExportGraphic( aGraphic, aURL, rFilter, nFilter, pFilterData );
}
}
}
return nErr;
}
else
{
return ERRCODE_NONE;
}
}
bool XOutBitmap::GraphicToBase64(const Graphic& rGraphic, OUString& rOUString)
{
SvMemoryStream aOStm;
OUString aMimeType;
GfxLink aLink = rGraphic.GetLink();
ConvertDataFormat aCvtType;
switch( aLink.GetType() )
{
case GfxLinkType::NativeJpg:
aCvtType = ConvertDataFormat::JPG;
aMimeType = "image/jpeg";
break;
case GfxLinkType::NativePng:
aCvtType = ConvertDataFormat::PNG;
aMimeType = "image/png";
break;
case GfxLinkType::NativeSvg:
aCvtType = ConvertDataFormat::SVG;
aMimeType = "image/svg+xml";
break;
default:
// save everything else (including gif) into png
aCvtType = ConvertDataFormat::PNG;
aMimeType = "image/png";
break;
}
ErrCode nErr = GraphicConverter::Export(aOStm,rGraphic,aCvtType);
if ( nErr )
{
SAL_WARN("svx", "XOutBitmap::GraphicToBase64() invalid Graphic? error: " << nErr );
return false;
}
aOStm.Seek(STREAM_SEEK_TO_END);
css::uno::Sequence<sal_Int8> aOStmSeq( static_cast<sal_Int8 const *>(aOStm.GetData()),aOStm.Tell() );
OUStringBuffer aStrBuffer;
::sax::Converter::encodeBase64(aStrBuffer,aOStmSeq);
OUString aEncodedBase64Image = aStrBuffer.makeStringAndClear();
if( aLink.GetType() == GfxLinkType::NativeSvg )
{
sal_Int32 ite(8);
sal_Int32 nBufferLength(aOStmSeq.getLength());
const sal_Int8* pBuffer = aOStmSeq.getConstArray();
css::uno::Sequence<sal_Int8> newTempSeq = aOStmSeq; // creates new Sequence to remove front 8 bits of garbage and encodes in base64
sal_Int8 *pOutBuffer = newTempSeq.getArray();
while(ite < nBufferLength)
{
*pOutBuffer++ = pBuffer[ite];
ite++;
}
::sax::Converter::encodeBase64(aStrBuffer, newTempSeq);
aEncodedBase64Image = aStrBuffer.makeStringAndClear();
sal_Int32 SVGFixLength = aEncodedBase64Image.getLength();
aEncodedBase64Image = aEncodedBase64Image.replaceAt(SVGFixLength - 12, SVGFixLength, "") + "PC9zdmc+Cg=="; // removes rear 12 bits of garbage and adds svg closing tag in base64
}
rOUString = aMimeType + ";base64," + aEncodedBase64Image;
return true;
}
ErrCode XOutBitmap::ExportGraphic( const Graphic& rGraphic, const INetURLObject& rURL,
GraphicFilter& rFilter, const sal_uInt16 nFormat,
const css::uno::Sequence< css::beans::PropertyValue >* pFilterData )
{
DBG_ASSERT( rURL.GetProtocol() != INetProtocol::NotValid, "XOutBitmap::ExportGraphic(...): invalid URL" );
SfxMedium aMedium( rURL.GetMainURL( INetURLObject::DecodeMechanism::NONE ), StreamMode::WRITE | StreamMode::SHARE_DENYNONE | StreamMode::TRUNC );
SvStream* pOStm = aMedium.GetOutStream();
ErrCode nRet = ERRCODE_GRFILTER_IOERROR;
if( pOStm )
{
pGrfFilter = &rFilter;
nRet = rFilter.ExportGraphic( rGraphic, rURL.GetMainURL( INetURLObject::DecodeMechanism::NONE ), *pOStm, nFormat, pFilterData );
pGrfFilter = nullptr;
aMedium.Commit();
if( aMedium.GetError() && ( ERRCODE_NONE == nRet ) )
nRet = ERRCODE_GRFILTER_IOERROR;
}
return nRet;
}
Bitmap XOutBitmap::DetectEdges( const Bitmap& rBmp, const sal_uInt8 cThreshold )
{
const Size aSize( rBmp.GetSizePixel() );
Bitmap aRetBmp;
if( ( aSize.Width() > 2 ) && ( aSize.Height() > 2 ) )
{
Bitmap aWorkBmp( rBmp );
if( aWorkBmp.Convert( BmpConversion::N8BitGreys ) )
{
bool bRet = false;
Bitmap aDstBmp( aSize, 1 );
Bitmap::ScopedReadAccess pReadAcc(aWorkBmp);
Bitmap::ScopedWriteAccess pWriteAcc(aDstBmp);
if( pReadAcc && pWriteAcc )
{
const long nWidth = aSize.Width();
const long nWidth2 = nWidth - 2;
const long nHeight = aSize.Height();
const long nHeight2 = nHeight - 2;
const long lThres2 = static_cast<long>(cThreshold) * cThreshold;
const sal_uInt8 nWhitePalIdx(static_cast< sal_uInt8 >(pWriteAcc->GetBestPaletteIndex(Color(COL_WHITE))));
const sal_uInt8 nBlackPalIdx(static_cast< sal_uInt8 >(pWriteAcc->GetBestPaletteIndex(Color(COL_BLACK))));
long nSum1;
long nSum2;
long lGray;
// initialize border with white pixels
pWriteAcc->SetLineColor( Color( COL_WHITE) );
pWriteAcc->DrawLine( Point(), Point( nWidth - 1, 0L ) );
pWriteAcc->DrawLine( Point( nWidth - 1, 0L ), Point( nWidth - 1, nHeight - 1 ) );
pWriteAcc->DrawLine( Point( nWidth - 1, nHeight - 1 ), Point( 0L, nHeight - 1 ) );
pWriteAcc->DrawLine( Point( 0, nHeight - 1 ), Point() );
for( long nY = 0, nY1 = 1, nY2 = 2; nY < nHeight2; nY++, nY1++, nY2++ )
{
for( long nX = 0, nXDst = 1, nXTmp; nX < nWidth2; nX++, nXDst++ )
{
nXTmp = nX;
nSum1 = -( nSum2 = lGray = pReadAcc->GetPixelIndex( nY, nXTmp++ ) );
nSum2 += static_cast<long>(pReadAcc->GetPixelIndex( nY, nXTmp++ )) << 1;
nSum1 += ( lGray = pReadAcc->GetPixelIndex( nY, nXTmp ) );
nSum2 += lGray;
nSum1 += static_cast<long>(pReadAcc->GetPixelIndex( nY1, nXTmp )) << 1;
nSum1 -= static_cast<long>(pReadAcc->GetPixelIndex( nY1, nXTmp -= 2 )) << 1;
nSum1 += ( lGray = -static_cast<long>(pReadAcc->GetPixelIndex( nY2, nXTmp++ )) );
nSum2 += lGray;
nSum2 -= static_cast<long>(pReadAcc->GetPixelIndex( nY2, nXTmp++ )) << 1;
nSum1 += ( lGray = static_cast<long>(pReadAcc->GetPixelIndex( nY2, nXTmp )) );
nSum2 -= lGray;
if( ( nSum1 * nSum1 + nSum2 * nSum2 ) < lThres2 )
pWriteAcc->SetPixelIndex( nY1, nXDst, nWhitePalIdx );
else
pWriteAcc->SetPixelIndex( nY1, nXDst, nBlackPalIdx );
}
}
bRet = true;
}
pReadAcc.reset();
pWriteAcc.reset();
if( bRet )
aRetBmp = aDstBmp;
}
}
if( !aRetBmp )
aRetBmp = rBmp;
else
{
aRetBmp.SetPrefMapMode( rBmp.GetPrefMapMode() );
aRetBmp.SetPrefSize( rBmp.GetPrefSize() );
}
return aRetBmp;
}
tools::Polygon XOutBitmap::GetContour( const Bitmap& rBmp, const XOutFlags nFlags,
const sal_uInt8 cEdgeDetectThreshold,
const tools::Rectangle* pWorkRectPixel )
{
Bitmap aWorkBmp;
tools::Polygon aRetPoly;
Point aTmpPoint;
tools::Rectangle aWorkRect( aTmpPoint, rBmp.GetSizePixel() );
if( pWorkRectPixel )
aWorkRect.Intersection( *pWorkRectPixel );
aWorkRect.Justify();
if( ( aWorkRect.GetWidth() > 4 ) && ( aWorkRect.GetHeight() > 4 ) )
{
// if the flag is set, we need to detect edges
if( nFlags & XOutFlags::ContourEdgeDetect )
aWorkBmp = DetectEdges( rBmp, cEdgeDetectThreshold );
else
aWorkBmp = rBmp;
BitmapReadAccess* pAcc = aWorkBmp.AcquireReadAccess();
const long nWidth = pAcc ? pAcc->Width() : 0;
const long nHeight = pAcc ? pAcc->Height() : 0;
if (pAcc && nWidth && nHeight)
{
const Size& rPrefSize = aWorkBmp.GetPrefSize();
const double fFactorX = static_cast<double>(rPrefSize.Width()) / nWidth;
const double fFactorY = static_cast<double>(rPrefSize.Height()) / nHeight;
const long nStartX1 = aWorkRect.Left() + 1;
const long nEndX1 = aWorkRect.Right();
const long nStartX2 = nEndX1 - 1;
const long nStartY1 = aWorkRect.Top() + 1;
const long nEndY1 = aWorkRect.Bottom();
const long nStartY2 = nEndY1 - 1;
std::unique_ptr<Point[]> pPoints1;
std::unique_ptr<Point[]> pPoints2;
long nX, nY;
sal_uInt16 nPolyPos = 0;
const BitmapColor aBlack = pAcc->GetBestMatchingColor( Color( COL_BLACK ) );
if( nFlags & XOutFlags::ContourVert )
{
pPoints1.reset(new Point[ nWidth ]);
pPoints2.reset(new Point[ nWidth ]);
for( nX = nStartX1; nX < nEndX1; nX++ )
{
nY = nStartY1;
// scan row from left to right
while( nY < nEndY1 )
{
if( aBlack == pAcc->GetPixel( nY, nX ) )
{
pPoints1[ nPolyPos ] = Point( nX, nY );
nY = nStartY2;
// this loop always breaks eventually as there is at least one pixel
while( true )
{
if( aBlack == pAcc->GetPixel( nY, nX ) )
{
pPoints2[ nPolyPos ] = Point( nX, nY );
break;
}
nY--;
}
nPolyPos++;
break;
}
nY++;
}
}
}
else
{
pPoints1.reset(new Point[ nHeight ]);
pPoints2.reset(new Point[ nHeight ]);
for ( nY = nStartY1; nY < nEndY1; nY++ )
{
nX = nStartX1;
// scan row from left to right
while( nX < nEndX1 )
{
if( aBlack == pAcc->GetPixel( nY, nX ) )
{
pPoints1[ nPolyPos ] = Point( nX, nY );
nX = nStartX2;
// this loop always breaks eventually as there is at least one pixel
while( true )
{
if( aBlack == pAcc->GetPixel( nY, nX ) )
{
pPoints2[ nPolyPos ] = Point( nX, nY );
break;
}
nX--;
}
nPolyPos++;
break;
}
nX++;
}
}
}
const sal_uInt16 nNewSize1 = nPolyPos << 1;
aRetPoly = tools::Polygon( nPolyPos, pPoints1.get() );
aRetPoly.SetSize( nNewSize1 + 1 );
aRetPoly[ nNewSize1 ] = aRetPoly[ 0 ];
for( sal_uInt16 j = nPolyPos; nPolyPos < nNewSize1; )
aRetPoly[ nPolyPos++ ] = pPoints2[ --j ];
if( ( fFactorX != 0. ) && ( fFactorY != 0. ) )
aRetPoly.Scale( fFactorX, fFactorY );
}
Bitmap::ReleaseAccess(pAcc);
}
return aRetPoly;
}
bool DitherBitmap( Bitmap& rBitmap )
{
bool bRet = false;
if( ( rBitmap.GetBitCount() >= 8 ) && ( Application::GetDefaultDevice()->GetColorCount() < 257 ) )
bRet = rBitmap.Dither( BmpDitherFlags::Floyd );
else
bRet = false;
return bRet;
}
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