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diff --git a/vcl/source/bitmap/bitmap.cxx b/vcl/source/bitmap/bitmap.cxx
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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 <config_features.h>
+
+#include <sal/log.hxx>
+#include <osl/diagnose.h>
+#include <tools/helpers.hxx>
+
+#include <vcl/bitmap.hxx>
+#include <vcl/bitmapex.hxx>
+#include <vcl/outdev.hxx>
+
+#include <svdata.hxx>
+#include <salinst.hxx>
+#include <salbmp.hxx>
+#if HAVE_FEATURE_SKIA
+#include <vcl/skia/SkiaHelper.hxx>
+#endif
+#include <vcl/BitmapMonochromeFilter.hxx>
+
+#include <bitmap/BitmapScaleSuperFilter.hxx>
+#include <bitmap/BitmapScaleConvolutionFilter.hxx>
+#include <bitmap/BitmapFastScaleFilter.hxx>
+#include <bitmap/BitmapInterpolateScaleFilter.hxx>
+#include <bitmap/BitmapWriteAccess.hxx>
+#include <bitmap/impoctree.hxx>
+#include <bitmap/Octree.hxx>
+
+#include "impvect.hxx"
+#include "floyd.hxx"
+
+#include <math.h>
+#include <algorithm>
+#include <memory>
+
+#ifdef DBG_UTIL
+#include <cstdlib>
+#include <tools/stream.hxx>
+#include <vcl/graphicfilter.hxx>
+#endif
+
+Bitmap::Bitmap()
+{
+}
+
+Bitmap::Bitmap(const Bitmap& rBitmap)
+ : mxSalBmp(rBitmap.mxSalBmp)
+ , maPrefMapMode(rBitmap.maPrefMapMode)
+ , maPrefSize(rBitmap.maPrefSize)
+{
+}
+
+Bitmap::Bitmap(std::shared_ptr<SalBitmap> const & pSalBitmap)
+ : mxSalBmp(pSalBitmap)
+ , maPrefMapMode(MapMode(MapUnit::MapPixel))
+ , maPrefSize(mxSalBmp->GetSize())
+{
+}
+
+Bitmap::Bitmap( const Size& rSizePixel, vcl::PixelFormat ePixelFormat, const BitmapPalette* pPal )
+{
+ if (!(rSizePixel.Width() && rSizePixel.Height()))
+ return;
+
+ BitmapPalette aPal;
+ BitmapPalette* pRealPal = nullptr;
+
+ if (vcl::isPalettePixelFormat(ePixelFormat))
+ {
+ if( !pPal )
+ {
+ if (ePixelFormat == vcl::PixelFormat::N1_BPP)
+ {
+ aPal.SetEntryCount( 2 );
+ aPal[ 0 ] = COL_BLACK;
+ aPal[ 1 ] = COL_WHITE;
+ }
+ else if (ePixelFormat == vcl::PixelFormat::N8_BPP)
+ {
+ aPal.SetEntryCount(1 << sal_uInt16(ePixelFormat));
+ aPal[ 0 ] = COL_BLACK;
+ aPal[ 1 ] = COL_BLUE;
+ aPal[ 2 ] = COL_GREEN;
+ aPal[ 3 ] = COL_CYAN;
+ aPal[ 4 ] = COL_RED;
+ aPal[ 5 ] = COL_MAGENTA;
+ aPal[ 6 ] = COL_BROWN;
+ aPal[ 7 ] = COL_GRAY;
+ aPal[ 8 ] = COL_LIGHTGRAY;
+ aPal[ 9 ] = COL_LIGHTBLUE;
+ aPal[ 10 ] = COL_LIGHTGREEN;
+ aPal[ 11 ] = COL_LIGHTCYAN;
+ aPal[ 12 ] = COL_LIGHTRED;
+ aPal[ 13 ] = COL_LIGHTMAGENTA;
+ aPal[ 14 ] = COL_YELLOW;
+ aPal[ 15 ] = COL_WHITE;
+
+ // Create dither palette
+ if (ePixelFormat == vcl::PixelFormat::N8_BPP)
+ {
+ sal_uInt16 nActCol = 16;
+
+ for( sal_uInt16 nB = 0; nB < 256; nB += 51 )
+ for( sal_uInt16 nG = 0; nG < 256; nG += 51 )
+ for( sal_uInt16 nR = 0; nR < 256; nR += 51 )
+ aPal[ nActCol++ ] = BitmapColor( static_cast<sal_uInt8>(nR), static_cast<sal_uInt8>(nG), static_cast<sal_uInt8>(nB) );
+
+ // Set standard Office colors
+ aPal[ nActCol++ ] = BitmapColor( 0, 184, 255 );
+ }
+ }
+ }
+ else
+ pRealPal = const_cast<BitmapPalette*>(pPal);
+ }
+
+ mxSalBmp = ImplGetSVData()->mpDefInst->CreateSalBitmap();
+ mxSalBmp->Create(rSizePixel, ePixelFormat, pRealPal ? *pRealPal : aPal);
+}
+
+#ifdef DBG_UTIL
+
+namespace
+{
+void savePNG(const OUString& sWhere, const Bitmap& rBmp)
+{
+ SvFileStream aStream(sWhere, StreamMode::WRITE | StreamMode::TRUNC);
+ GraphicFilter& rFilter = GraphicFilter::GetGraphicFilter();
+ rFilter.compressAsPNG(BitmapEx(rBmp), aStream);
+}
+}
+
+#endif
+
+Bitmap::~Bitmap()
+{
+#ifdef DBG_UTIL
+ // VCL_DUMP_BMP_PATH should be like C:/bmpDump.png or ~/bmpDump.png
+ static const OUString sDumpPath(OUString::createFromAscii(std::getenv("VCL_DUMP_BMP_PATH")));
+ // Stepping into the dtor of a bitmap you need, and setting the volatile variable to true in
+ // debugger, would dump the bitmap in question
+ static volatile bool save(false);
+ if (!sDumpPath.isEmpty() && save)
+ {
+ save = false;
+ savePNG(sDumpPath, *this);
+ }
+#endif
+}
+
+const BitmapPalette& Bitmap::GetGreyPalette( int nEntries )
+{
+ // Create greyscale palette with 2, 4, 16 or 256 entries
+ switch (nEntries)
+ {
+ case 2:
+ {
+ static const BitmapPalette aGreyPalette2 = [] {
+ BitmapPalette aPalette(2);
+ aPalette[0] = BitmapColor(0, 0, 0);
+ aPalette[1] = BitmapColor(255, 255, 255);
+ return aPalette;
+ }();
+
+ return aGreyPalette2;
+ }
+ case 4:
+ {
+ static const BitmapPalette aGreyPalette4 = [] {
+ BitmapPalette aPalette(4);
+ aPalette[0] = BitmapColor(0, 0, 0);
+ aPalette[1] = BitmapColor(85, 85, 85);
+ aPalette[2] = BitmapColor(170, 170, 170);
+ aPalette[3] = BitmapColor(255, 255, 255);
+ return aPalette;
+ }();
+
+ return aGreyPalette4;
+ }
+ case 16:
+ {
+ static const BitmapPalette aGreyPalette16 = [] {
+ sal_uInt8 cGrey = 0;
+ sal_uInt8 const cGreyInc = 17;
+
+ BitmapPalette aPalette(16);
+
+ for (sal_uInt16 i = 0; i < 16; ++i, cGrey += cGreyInc)
+ aPalette[i] = BitmapColor(cGrey, cGrey, cGrey);
+
+ return aPalette;
+ }();
+
+ return aGreyPalette16;
+ }
+ case 256:
+ {
+ static const BitmapPalette aGreyPalette256 = [] {
+ BitmapPalette aPalette(256);
+
+ for (sal_uInt16 i = 0; i < 256; ++i)
+ aPalette[i] = BitmapColor(static_cast<sal_uInt8>(i), static_cast<sal_uInt8>(i),
+ static_cast<sal_uInt8>(i));
+
+ return aPalette;
+ }();
+
+ return aGreyPalette256;
+ }
+ }
+ OSL_FAIL("Bitmap::GetGreyPalette: invalid entry count (2/4/16/256 allowed)");
+ return GetGreyPalette(2);
+}
+
+Bitmap& Bitmap::operator=( const Bitmap& rBitmap )
+{
+ if (this == &rBitmap)
+ return *this;
+
+ maPrefSize = rBitmap.maPrefSize;
+ maPrefMapMode = rBitmap.maPrefMapMode;
+ mxSalBmp = rBitmap.mxSalBmp;
+
+ return *this;
+}
+
+Bitmap& Bitmap::operator=( Bitmap&& rBitmap ) noexcept
+{
+ maPrefSize = std::move(rBitmap.maPrefSize);
+ maPrefMapMode = std::move(rBitmap.maPrefMapMode);
+ mxSalBmp = std::move(rBitmap.mxSalBmp);
+
+ return *this;
+}
+
+bool Bitmap::operator==( const Bitmap& rBmp ) const
+{
+ if (rBmp.mxSalBmp == mxSalBmp) // Includes both are nullptr
+ return true;
+ if (!rBmp.mxSalBmp || !mxSalBmp)
+ return false;
+ if (rBmp.mxSalBmp->GetSize() != mxSalBmp->GetSize() ||
+ rBmp.mxSalBmp->GetBitCount() != mxSalBmp->GetBitCount())
+ return false;
+ BitmapChecksum aChecksum1 = rBmp.mxSalBmp->GetChecksum();
+ BitmapChecksum aChecksum2 = mxSalBmp->GetChecksum();
+ // If the bitmaps can't calculate a checksum, best to regard them as different.
+ if (aChecksum1 == 0 || aChecksum2 == 0)
+ return false;
+ return aChecksum1 == aChecksum2;
+}
+
+void Bitmap::SetEmpty()
+{
+ maPrefMapMode = MapMode();
+ maPrefSize = Size();
+ mxSalBmp.reset();
+}
+
+Size Bitmap::GetSizePixel() const
+{
+ return( mxSalBmp ? mxSalBmp->GetSize() : Size() );
+}
+
+vcl::PixelFormat Bitmap::getPixelFormat() const
+{
+ if (!mxSalBmp)
+ return vcl::PixelFormat::INVALID;
+
+ sal_uInt16 nBitCount = mxSalBmp->GetBitCount();
+ if (nBitCount <= 1)
+ return vcl::PixelFormat::N1_BPP;
+ if (nBitCount <= 8)
+ return vcl::PixelFormat::N8_BPP;
+ if (nBitCount <= 24)
+ return vcl::PixelFormat::N24_BPP;
+ if (nBitCount <= 32)
+ return vcl::PixelFormat::N32_BPP;
+
+ return vcl::PixelFormat::INVALID;
+}
+
+bool Bitmap::HasGreyPaletteAny() const
+{
+ bool bRet = getPixelFormat() == vcl::PixelFormat::N1_BPP;
+
+ ScopedInfoAccess pIAcc(const_cast<Bitmap&>(*this));
+
+ if( pIAcc )
+ {
+ bRet = pIAcc->HasPalette() && pIAcc->GetPalette().IsGreyPaletteAny();
+ }
+
+ return bRet;
+}
+
+bool Bitmap::HasGreyPalette8Bit() const
+{
+ bool bRet = false;
+ ScopedInfoAccess pIAcc(const_cast<Bitmap&>(*this));
+
+ if( pIAcc )
+ {
+ bRet = pIAcc->HasPalette() && pIAcc->GetPalette().IsGreyPalette8Bit();
+ }
+
+ return bRet;
+}
+
+BitmapChecksum Bitmap::GetChecksum() const
+{
+ BitmapChecksum nRet = 0;
+
+ if( mxSalBmp )
+ {
+ nRet = mxSalBmp->GetChecksum();
+
+ if (!nRet)
+ {
+ // nRet == 0 => probably, we were not able to acquire
+ // the buffer in SalBitmap::updateChecksum;
+ // so, we need to update the imp bitmap for this bitmap instance
+ // as we do in BitmapInfoAccess::ImplCreate
+ std::shared_ptr<SalBitmap> xNewImpBmp(ImplGetSVData()->mpDefInst->CreateSalBitmap());
+ if (xNewImpBmp->Create(*mxSalBmp, getPixelFormat()))
+ {
+ Bitmap* pThis = const_cast<Bitmap*>(this);
+ pThis->mxSalBmp = xNewImpBmp;
+ nRet = mxSalBmp->GetChecksum();
+ }
+ }
+ }
+
+ return nRet;
+}
+
+void Bitmap::ImplMakeUnique()
+{
+ if (mxSalBmp && mxSalBmp.use_count() > 1)
+ {
+ std::shared_ptr<SalBitmap> xOldImpBmp = mxSalBmp;
+ mxSalBmp = ImplGetSVData()->mpDefInst->CreateSalBitmap();
+ (void)mxSalBmp->Create(*xOldImpBmp);
+ }
+}
+
+void Bitmap::ReassignWithSize(const Bitmap& rBitmap)
+{
+ const Size aOldSizePix(GetSizePixel());
+ const Size aNewSizePix(rBitmap.GetSizePixel());
+ const MapMode aOldMapMode(maPrefMapMode);
+ Size aNewPrefSize;
+
+ if ((aOldSizePix != aNewSizePix) && aOldSizePix.Width() && aOldSizePix.Height())
+ {
+ aNewPrefSize.setWidth(FRound(maPrefSize.Width() * aNewSizePix.Width() / aOldSizePix.Width()));
+ aNewPrefSize.setHeight(FRound(maPrefSize.Height() * aNewSizePix.Height() / aOldSizePix.Height()));
+ }
+ else
+ {
+ aNewPrefSize = maPrefSize;
+ }
+
+ *this = rBitmap;
+
+ maPrefSize = aNewPrefSize;
+ maPrefMapMode = aOldMapMode;
+}
+
+void Bitmap::ImplSetSalBitmap(const std::shared_ptr<SalBitmap>& xImpBmp)
+{
+ mxSalBmp = xImpBmp;
+}
+
+BitmapInfoAccess* Bitmap::AcquireInfoAccess()
+{
+ std::unique_ptr<BitmapInfoAccess> pInfoAccess(new BitmapInfoAccess( *this ));
+
+ if( !*pInfoAccess )
+ {
+ return nullptr;
+ }
+
+ return pInfoAccess.release();
+}
+
+BitmapReadAccess* Bitmap::AcquireReadAccess()
+{
+ std::unique_ptr<BitmapReadAccess> pReadAccess(new BitmapReadAccess( *this ));
+
+ if( !*pReadAccess )
+ {
+ return nullptr;
+ }
+
+ return pReadAccess.release();
+}
+
+BitmapWriteAccess* Bitmap::AcquireWriteAccess()
+{
+ std::unique_ptr<BitmapWriteAccess> pWriteAccess(new BitmapWriteAccess( *this ));
+
+ if( !*pWriteAccess )
+ {
+ return nullptr;
+ }
+
+ return pWriteAccess.release();
+}
+
+void Bitmap::ReleaseAccess( BitmapInfoAccess* pBitmapAccess )
+{
+ delete pBitmapAccess;
+}
+
+bool Bitmap::Crop( const tools::Rectangle& rRectPixel )
+{
+ const Size aSizePix( GetSizePixel() );
+ tools::Rectangle aRect( rRectPixel );
+ bool bRet = false;
+
+ aRect.Intersection( tools::Rectangle( Point(), aSizePix ) );
+
+ if( !aRect.IsEmpty() && aSizePix != aRect.GetSize())
+ {
+ ScopedReadAccess pReadAcc(*this);
+
+ if( pReadAcc )
+ {
+ const tools::Rectangle aNewRect( Point(), aRect.GetSize() );
+ Bitmap aNewBmp(aNewRect.GetSize(), getPixelFormat(), &pReadAcc->GetPalette());
+ BitmapScopedWriteAccess pWriteAcc(aNewBmp);
+
+ if( pWriteAcc )
+ {
+ const tools::Long nOldX = aRect.Left();
+ const tools::Long nOldY = aRect.Top();
+ const tools::Long nNewWidth = aNewRect.GetWidth();
+ const tools::Long nNewHeight = aNewRect.GetHeight();
+
+ for( tools::Long nY = 0, nY2 = nOldY; nY < nNewHeight; nY++, nY2++ )
+ {
+ Scanline pScanline = pWriteAcc->GetScanline(nY);
+ Scanline pScanlineRead = pReadAcc->GetScanline(nY2);
+ for( tools::Long nX = 0, nX2 = nOldX; nX < nNewWidth; nX++, nX2++ )
+ pWriteAcc->SetPixelOnData( pScanline, nX, pReadAcc->GetPixelFromData( pScanlineRead, nX2 ) );
+ }
+
+ pWriteAcc.reset();
+ bRet = true;
+ }
+
+ pReadAcc.reset();
+
+ if( bRet )
+ ReassignWithSize( aNewBmp );
+ }
+ }
+
+ return bRet;
+};
+
+bool Bitmap::CopyPixel( const tools::Rectangle& rRectDst,
+ const tools::Rectangle& rRectSrc, const Bitmap* pBmpSrc )
+{
+ const Size aSizePix( GetSizePixel() );
+ tools::Rectangle aRectDst( rRectDst );
+ bool bRet = false;
+
+ aRectDst.Intersection( tools::Rectangle( Point(), aSizePix ) );
+
+ if( !aRectDst.IsEmpty() )
+ {
+ if( pBmpSrc && ( pBmpSrc->mxSalBmp != mxSalBmp ) )
+ {
+ Bitmap* pSrc = const_cast<Bitmap*>(pBmpSrc);
+ const Size aCopySizePix( pSrc->GetSizePixel() );
+ tools::Rectangle aRectSrc( rRectSrc );
+ const sal_uInt16 nSrcBitCount = vcl::pixelFormatBitCount(pBmpSrc->getPixelFormat());
+ const sal_uInt16 nDstBitCount = vcl::pixelFormatBitCount(getPixelFormat());
+
+ if( nSrcBitCount > nDstBitCount )
+ {
+ int nNextIndex = 0;
+
+ if (nSrcBitCount == 24)
+ Convert( BmpConversion::N24Bit );
+ else if (nSrcBitCount == 8)
+ {
+ Convert( BmpConversion::N8BitColors );
+ nNextIndex = 16;
+ }
+ else if (nSrcBitCount == 4)
+ {
+ assert(false);
+ }
+
+ if( nNextIndex )
+ {
+ ScopedReadAccess pSrcAcc(*pSrc);
+ BitmapScopedWriteAccess pDstAcc(*this);
+
+ if( pSrcAcc && pDstAcc )
+ {
+ const int nSrcCount = pSrcAcc->GetPaletteEntryCount();
+ const int nDstCount = 1 << nDstBitCount;
+
+ for (int i = 0; ( i < nSrcCount ) && ( nNextIndex < nDstCount ); ++i)
+ {
+ const BitmapColor& rSrcCol = pSrcAcc->GetPaletteColor( static_cast<sal_uInt16>(i) );
+
+ bool bFound = false;
+
+ for (int j = 0; j < nDstCount; ++j)
+ {
+ if( rSrcCol == pDstAcc->GetPaletteColor( static_cast<sal_uInt16>(j) ) )
+ {
+ bFound = true;
+ break;
+ }
+ }
+
+ if( !bFound )
+ pDstAcc->SetPaletteColor( static_cast<sal_uInt16>(nNextIndex++), rSrcCol );
+ }
+ }
+ }
+ }
+
+ aRectSrc.Intersection( tools::Rectangle( Point(), aCopySizePix ) );
+
+ if( !aRectSrc.IsEmpty() )
+ {
+ ScopedReadAccess pReadAcc(*pSrc);
+
+ if( pReadAcc )
+ {
+ BitmapScopedWriteAccess pWriteAcc(*this);
+
+ if( pWriteAcc )
+ {
+ const tools::Long nWidth = std::min( aRectSrc.GetWidth(), aRectDst.GetWidth() );
+ const tools::Long nHeight = std::min( aRectSrc.GetHeight(), aRectDst.GetHeight() );
+ const tools::Long nSrcEndX = aRectSrc.Left() + nWidth;
+ const tools::Long nSrcEndY = aRectSrc.Top() + nHeight;
+ tools::Long nDstY = aRectDst.Top();
+
+ if( pReadAcc->HasPalette() && pWriteAcc->HasPalette() )
+ {
+ const sal_uInt16 nCount = pReadAcc->GetPaletteEntryCount();
+ std::unique_ptr<sal_uInt8[]> pMap(new sal_uInt8[ nCount ]);
+
+ // Create index map for the color table, as the bitmap should be copied
+ // retaining it's color information relatively well
+ for( sal_uInt16 i = 0; i < nCount; i++ )
+ pMap[ i ] = static_cast<sal_uInt8>(pWriteAcc->GetBestPaletteIndex( pReadAcc->GetPaletteColor( i ) ));
+
+ for( tools::Long nSrcY = aRectSrc.Top(); nSrcY < nSrcEndY; nSrcY++, nDstY++ )
+ {
+ Scanline pScanline = pWriteAcc->GetScanline(nDstY);
+ Scanline pScanlineRead = pReadAcc->GetScanline(nSrcY);
+ for( tools::Long nSrcX = aRectSrc.Left(), nDstX = aRectDst.Left(); nSrcX < nSrcEndX; nSrcX++, nDstX++ )
+ pWriteAcc->SetPixelOnData( pScanline, nDstX, BitmapColor( pMap[ pReadAcc->GetIndexFromData( pScanlineRead, nSrcX ) ] ));
+ }
+ }
+ else if( pReadAcc->HasPalette() )
+ {
+ for( tools::Long nSrcY = aRectSrc.Top(); nSrcY < nSrcEndY; nSrcY++, nDstY++ )
+ {
+ Scanline pScanline = pWriteAcc->GetScanline(nDstY);
+ Scanline pScanlineRead = pReadAcc->GetScanline(nSrcY);
+ for( tools::Long nSrcX = aRectSrc.Left(), nDstX = aRectDst.Left(); nSrcX < nSrcEndX; nSrcX++, nDstX++ )
+ pWriteAcc->SetPixelOnData( pScanline, nDstX, pReadAcc->GetPaletteColor( pReadAcc->GetIndexFromData( pScanlineRead, nSrcX ) ) );
+ }
+ }
+ else
+ for( tools::Long nSrcY = aRectSrc.Top(); nSrcY < nSrcEndY; nSrcY++, nDstY++ )
+ {
+ Scanline pScanline = pWriteAcc->GetScanline(nDstY);
+ Scanline pScanlineRead = pReadAcc->GetScanline(nSrcY);
+ for( tools::Long nSrcX = aRectSrc.Left(), nDstX = aRectDst.Left(); nSrcX < nSrcEndX; nSrcX++, nDstX++ )
+ pWriteAcc->SetPixelOnData( pScanline, nDstX, pReadAcc->GetPixelFromData( pScanlineRead, nSrcX ) );
+ }
+
+ pWriteAcc.reset();
+ bRet = ( nWidth > 0 ) && ( nHeight > 0 );
+ }
+
+ pReadAcc.reset();
+ }
+ }
+ }
+ else
+ {
+ tools::Rectangle aRectSrc( rRectSrc );
+
+ aRectSrc.Intersection( tools::Rectangle( Point(), aSizePix ) );
+
+ if( !aRectSrc.IsEmpty() && ( aRectSrc != aRectDst ) )
+ {
+ BitmapScopedWriteAccess pWriteAcc(*this);
+
+ if( pWriteAcc )
+ {
+ const tools::Long nWidth = std::min( aRectSrc.GetWidth(), aRectDst.GetWidth() );
+ const tools::Long nHeight = std::min( aRectSrc.GetHeight(), aRectDst.GetHeight() );
+ const tools::Long nSrcX = aRectSrc.Left();
+ const tools::Long nSrcY = aRectSrc.Top();
+ const tools::Long nSrcEndX1 = nSrcX + nWidth - 1;
+ const tools::Long nSrcEndY1 = nSrcY + nHeight - 1;
+ const tools::Long nDstX = aRectDst.Left();
+ const tools::Long nDstY = aRectDst.Top();
+ const tools::Long nDstEndX1 = nDstX + nWidth - 1;
+ const tools::Long nDstEndY1 = nDstY + nHeight - 1;
+
+ if( ( nDstX <= nSrcX ) && ( nDstY <= nSrcY ) )
+ {
+ for( tools::Long nY = nSrcY, nYN = nDstY; nY <= nSrcEndY1; nY++, nYN++ )
+ {
+ Scanline pScanline = pWriteAcc->GetScanline(nYN);
+ Scanline pScanlineSrc = pWriteAcc->GetScanline(nY);
+ for( tools::Long nX = nSrcX, nXN = nDstX; nX <= nSrcEndX1; nX++, nXN++ )
+ pWriteAcc->SetPixelOnData( pScanline, nXN, pWriteAcc->GetPixelFromData( pScanlineSrc, nX ) );
+ }
+ }
+ else if( ( nDstX <= nSrcX ) && ( nDstY >= nSrcY ) )
+ {
+ for( tools::Long nY = nSrcEndY1, nYN = nDstEndY1; nY >= nSrcY; nY--, nYN-- )
+ {
+ Scanline pScanline = pWriteAcc->GetScanline(nYN);
+ Scanline pScanlineSrc = pWriteAcc->GetScanline(nY);
+ for( tools::Long nX = nSrcX, nXN = nDstX; nX <= nSrcEndX1; nX++, nXN++ )
+ pWriteAcc->SetPixelOnData( pScanline, nXN, pWriteAcc->GetPixelFromData( pScanlineSrc, nX ) );
+ }
+ }
+ else if( ( nDstX >= nSrcX ) && ( nDstY <= nSrcY ) )
+ {
+ for( tools::Long nY = nSrcY, nYN = nDstY; nY <= nSrcEndY1; nY++, nYN++ )
+ {
+ Scanline pScanline = pWriteAcc->GetScanline(nYN);
+ Scanline pScanlineSrc = pWriteAcc->GetScanline(nY);
+ for( tools::Long nX = nSrcEndX1, nXN = nDstEndX1; nX >= nSrcX; nX--, nXN-- )
+ pWriteAcc->SetPixelOnData( pScanline, nXN, pWriteAcc->GetPixelFromData( pScanlineSrc, nX ) );
+ }
+ }
+ else
+ {
+ for( tools::Long nY = nSrcEndY1, nYN = nDstEndY1; nY >= nSrcY; nY--, nYN-- )
+ {
+ Scanline pScanline = pWriteAcc->GetScanline(nYN);
+ Scanline pScanlineSrc = pWriteAcc->GetScanline(nY);
+ for( tools::Long nX = nSrcEndX1, nXN = nDstEndX1; nX >= nSrcX; nX--, nXN-- )
+ pWriteAcc->SetPixelOnData( pScanline, nXN, pWriteAcc->GetPixelFromData( pScanlineSrc, nX ) );
+ }
+ }
+
+ pWriteAcc.reset();
+ bRet = true;
+ }
+ }
+ }
+ }
+
+ return bRet;
+}
+
+bool Bitmap::CopyPixel_AlphaOptimized( const tools::Rectangle& rRectDst, const tools::Rectangle& rRectSrc,
+ const Bitmap* pBmpSrc )
+{
+ // Note: this code is copied from Bitmap::CopyPixel but avoids any palette lookups
+ // This optimization is possible because the palettes of AlphaMasks are always identical (8bit GreyPalette, see ctor)
+ const Size aSizePix( GetSizePixel() );
+ tools::Rectangle aRectDst( rRectDst );
+ bool bRet = false;
+
+ aRectDst.Intersection( tools::Rectangle( Point(), aSizePix ) );
+
+ if( !aRectDst.IsEmpty() )
+ {
+ if( pBmpSrc && ( pBmpSrc->mxSalBmp != mxSalBmp ) )
+ {
+ Bitmap* pSrc = const_cast<Bitmap*>(pBmpSrc);
+ const Size aCopySizePix( pSrc->GetSizePixel() );
+ tools::Rectangle aRectSrc( rRectSrc );
+
+ aRectSrc.Intersection( tools::Rectangle( Point(), aCopySizePix ) );
+
+ if( !aRectSrc.IsEmpty() )
+ {
+ ScopedReadAccess pReadAcc(*pSrc);
+
+ if( pReadAcc )
+ {
+ BitmapScopedWriteAccess pWriteAcc(*this);
+
+ if( pWriteAcc )
+ {
+ const tools::Long nWidth = std::min( aRectSrc.GetWidth(), aRectDst.GetWidth() );
+ const tools::Long nHeight = std::min( aRectSrc.GetHeight(), aRectDst.GetHeight() );
+ const tools::Long nSrcEndX = aRectSrc.Left() + nWidth;
+ const tools::Long nSrcEndY = aRectSrc.Top() + nHeight;
+ tools::Long nDstY = aRectDst.Top();
+
+ for( tools::Long nSrcY = aRectSrc.Top(); nSrcY < nSrcEndY; nSrcY++, nDstY++)
+ {
+ Scanline pScanline = pWriteAcc->GetScanline(nDstY);
+ Scanline pScanlineRead = pReadAcc->GetScanline(nSrcY);
+ for( tools::Long nSrcX = aRectSrc.Left(), nDstX = aRectDst.Left(); nSrcX < nSrcEndX; nSrcX++, nDstX++ )
+ pWriteAcc->SetPixelOnData( pScanline, nDstX, pReadAcc->GetPixelFromData( pScanlineRead, nSrcX ) );
+ }
+
+ pWriteAcc.reset();
+ bRet = ( nWidth > 0 ) && ( nHeight > 0 );
+ }
+
+ pReadAcc.reset();
+ }
+ }
+ }
+ else
+ {
+ tools::Rectangle aRectSrc( rRectSrc );
+
+ aRectSrc.Intersection( tools::Rectangle( Point(), aSizePix ) );
+
+ if( !aRectSrc.IsEmpty() && ( aRectSrc != aRectDst ) )
+ {
+ BitmapScopedWriteAccess pWriteAcc(*this);
+
+ if( pWriteAcc )
+ {
+ const tools::Long nWidth = std::min( aRectSrc.GetWidth(), aRectDst.GetWidth() );
+ const tools::Long nHeight = std::min( aRectSrc.GetHeight(), aRectDst.GetHeight() );
+ const tools::Long nSrcX = aRectSrc.Left();
+ const tools::Long nSrcY = aRectSrc.Top();
+ const tools::Long nSrcEndX1 = nSrcX + nWidth - 1;
+ const tools::Long nSrcEndY1 = nSrcY + nHeight - 1;
+ const tools::Long nDstX = aRectDst.Left();
+ const tools::Long nDstY = aRectDst.Top();
+ const tools::Long nDstEndX1 = nDstX + nWidth - 1;
+ const tools::Long nDstEndY1 = nDstY + nHeight - 1;
+
+ if( ( nDstX <= nSrcX ) && ( nDstY <= nSrcY ) )
+ {
+ for( tools::Long nY = nSrcY, nYN = nDstY; nY <= nSrcEndY1; nY++, nYN++ )
+ {
+ Scanline pScanline = pWriteAcc->GetScanline(nYN);
+ Scanline pScanlineSrc = pWriteAcc->GetScanline(nY);
+ for( tools::Long nX = nSrcX, nXN = nDstX; nX <= nSrcEndX1; nX++, nXN++ )
+ pWriteAcc->SetPixelOnData( pScanline, nXN, pWriteAcc->GetPixelFromData( pScanlineSrc, nX ) );
+ }
+ }
+ else if( ( nDstX <= nSrcX ) && ( nDstY >= nSrcY ) )
+ {
+ for( tools::Long nY = nSrcEndY1, nYN = nDstEndY1; nY >= nSrcY; nY--, nYN-- )
+ {
+ Scanline pScanline = pWriteAcc->GetScanline(nYN);
+ Scanline pScanlineSrc = pWriteAcc->GetScanline(nY);
+ for( tools::Long nX = nSrcX, nXN = nDstX; nX <= nSrcEndX1; nX++, nXN++ )
+ pWriteAcc->SetPixelOnData( pScanline, nXN, pWriteAcc->GetPixelFromData( pScanlineSrc, nX ) );
+ }
+ }
+ else if( ( nDstX >= nSrcX ) && ( nDstY <= nSrcY ) )
+ {
+ for( tools::Long nY = nSrcY, nYN = nDstY; nY <= nSrcEndY1; nY++, nYN++ )
+ {
+ Scanline pScanline = pWriteAcc->GetScanline(nYN);
+ Scanline pScanlineSrc = pWriteAcc->GetScanline(nY);
+ for( tools::Long nX = nSrcEndX1, nXN = nDstEndX1; nX >= nSrcX; nX--, nXN-- )
+ pWriteAcc->SetPixelOnData( pScanline, nXN, pWriteAcc->GetPixelFromData( pScanlineSrc, nX ) );
+ }
+ }
+ else
+ {
+ for( tools::Long nY = nSrcEndY1, nYN = nDstEndY1; nY >= nSrcY; nY--, nYN-- )
+ {
+ Scanline pScanline = pWriteAcc->GetScanline(nYN);
+ Scanline pScanlineSrc = pWriteAcc->GetScanline(nY);
+ for( tools::Long nX = nSrcEndX1, nXN = nDstEndX1; nX >= nSrcX; nX--, nXN-- )
+ pWriteAcc->SetPixelOnData( pScanline, nXN, pWriteAcc->GetPixelFromData( pScanlineSrc, nX ) );
+ }
+ }
+
+ pWriteAcc.reset();
+ bRet = true;
+ }
+ }
+ }
+ }
+
+ return bRet;
+
+}
+
+bool Bitmap::Expand( sal_Int32 nDX, sal_Int32 nDY, const Color* pInitColor )
+{
+ bool bRet = false;
+
+ if( nDX || nDY )
+ {
+ const Size aSizePixel( GetSizePixel() );
+ const tools::Long nWidth = aSizePixel.Width();
+ const tools::Long nHeight = aSizePixel.Height();
+ const Size aNewSize( nWidth + nDX, nHeight + nDY );
+ ScopedReadAccess pReadAcc(*this);
+
+ if( pReadAcc )
+ {
+ BitmapPalette aBmpPal( pReadAcc->GetPalette() );
+ Bitmap aNewBmp(aNewSize, getPixelFormat(), &aBmpPal);
+ BitmapScopedWriteAccess pWriteAcc(aNewBmp);
+
+ if( pWriteAcc )
+ {
+ BitmapColor aColor;
+ const tools::Long nNewX = nWidth;
+ const tools::Long nNewY = nHeight;
+ const tools::Long nNewWidth = pWriteAcc->Width();
+ const tools::Long nNewHeight = pWriteAcc->Height();
+ tools::Long nX;
+ tools::Long nY;
+
+ if( pInitColor )
+ aColor = pWriteAcc->GetBestMatchingColor( *pInitColor );
+
+ for( nY = 0; nY < nHeight; nY++ )
+ {
+ pWriteAcc->CopyScanline( nY, *pReadAcc );
+
+ if( pInitColor && nDX )
+ {
+ Scanline pScanline = pWriteAcc->GetScanline(nY);
+ for( nX = nNewX; nX < nNewWidth; nX++ )
+ pWriteAcc->SetPixelOnData( pScanline, nX, aColor );
+ }
+ }
+
+ if( pInitColor && nDY )
+ for( nY = nNewY; nY < nNewHeight; nY++ )
+ {
+ Scanline pScanline = pWriteAcc->GetScanline(nY);
+ for( nX = 0; nX < nNewWidth; nX++ )
+ pWriteAcc->SetPixelOnData( pScanline, nX, aColor );
+ }
+
+ pWriteAcc.reset();
+ bRet = true;
+ }
+
+ pReadAcc.reset();
+
+ if (bRet)
+ ReassignWithSize(aNewBmp);
+ }
+ }
+
+ return bRet;
+}
+
+Bitmap Bitmap::CreateDisplayBitmap( OutputDevice* pDisplay ) const
+{
+ Bitmap aDispBmp( *this );
+
+ SalGraphics* pDispGraphics = pDisplay->GetGraphics();
+
+ if( mxSalBmp && pDispGraphics )
+ {
+ std::shared_ptr<SalBitmap> xImpDispBmp(ImplGetSVData()->mpDefInst->CreateSalBitmap());
+ if (xImpDispBmp->Create(*mxSalBmp, pDispGraphics))
+ aDispBmp.ImplSetSalBitmap(xImpDispBmp);
+ }
+
+ return aDispBmp;
+}
+
+bool Bitmap::GetSystemData( BitmapSystemData& rData ) const
+{
+ return mxSalBmp && mxSalBmp->GetSystemData(rData);
+}
+
+
+bool Bitmap::Convert( BmpConversion eConversion )
+{
+ // try to convert in backend
+ if (mxSalBmp)
+ {
+ // avoid large chunk of obsolete and hopefully rarely used conversions.
+ if (eConversion == BmpConversion::N8BitNoConversion)
+ {
+ if (mxSalBmp->GetBitCount() == 8 && HasGreyPalette8Bit())
+ return true;
+ std::shared_ptr<SalBitmap> xImpBmp(ImplGetSVData()->mpDefInst->CreateSalBitmap());
+ // frequently used conversion for creating alpha masks
+ if (xImpBmp->Create(*mxSalBmp) && xImpBmp->InterpretAs8Bit())
+ {
+ ImplSetSalBitmap(xImpBmp);
+ SAL_INFO( "vcl.opengl", "Ref count: " << mxSalBmp.use_count() );
+ return true;
+ }
+ }
+ if (eConversion == BmpConversion::N8BitGreys)
+ {
+ std::shared_ptr<SalBitmap> xImpBmp(ImplGetSVData()->mpDefInst->CreateSalBitmap());
+ if (xImpBmp->Create(*mxSalBmp) && xImpBmp->ConvertToGreyscale())
+ {
+ ImplSetSalBitmap(xImpBmp);
+ SAL_INFO( "vcl.opengl", "Ref count: " << mxSalBmp.use_count() );
+ return true;
+ }
+ }
+ }
+
+ const sal_uInt16 nBitCount = vcl::pixelFormatBitCount(getPixelFormat());
+ bool bRet = false;
+
+ switch( eConversion )
+ {
+ case BmpConversion::N1BitThreshold:
+ {
+ BitmapEx aBmpEx(*this);
+ bRet = BitmapFilter::Filter(aBmpEx, BitmapMonochromeFilter(128));
+ *this = aBmpEx.GetBitmap();
+ }
+ break;
+
+ case BmpConversion::N8BitGreys:
+ case BmpConversion::N8BitNoConversion:
+ bRet = ImplMakeGreyscales();
+ break;
+
+ case BmpConversion::N8BitColors:
+ {
+ if( nBitCount < 8 )
+ bRet = ImplConvertUp(vcl::PixelFormat::N8_BPP);
+ else if( nBitCount > 8 )
+ bRet = ImplConvertDown8BPP();
+ else
+ bRet = true;
+ }
+ break;
+
+ case BmpConversion::N8BitTrans:
+ {
+ Color aTrans( BMP_COL_TRANS );
+
+ if( nBitCount < 8 )
+ bRet = ImplConvertUp(vcl::PixelFormat::N8_BPP, &aTrans );
+ else
+ bRet = ImplConvertDown8BPP(&aTrans );
+ }
+ break;
+
+ case BmpConversion::N24Bit:
+ {
+ if( nBitCount < 24 )
+ bRet = ImplConvertUp(vcl::PixelFormat::N24_BPP);
+ else
+ bRet = true;
+ }
+ break;
+
+ case BmpConversion::N32Bit:
+ {
+ if( nBitCount < 32 )
+ bRet = ImplConvertUp(vcl::PixelFormat::N32_BPP);
+ else
+ bRet = true;
+ }
+ break;
+
+ default:
+ OSL_FAIL( "Bitmap::Convert(): Unsupported conversion" );
+ break;
+ }
+
+ return bRet;
+}
+
+bool Bitmap::ImplMakeGreyscales()
+{
+ ScopedReadAccess pReadAcc(*this);
+ bool bRet = false;
+
+ if( pReadAcc )
+ {
+ const BitmapPalette& rPal = GetGreyPalette(256);
+ sal_uLong nShift = 0;
+ bool bPalDiffers = !pReadAcc->HasPalette() || ( rPal.GetEntryCount() != pReadAcc->GetPaletteEntryCount() );
+
+ if( !bPalDiffers )
+ bPalDiffers = ( rPal != pReadAcc->GetPalette() );
+
+ if( bPalDiffers )
+ {
+ const auto ePixelFormat = vcl::PixelFormat::N8_BPP;
+ Bitmap aNewBmp(GetSizePixel(), ePixelFormat, &rPal );
+ BitmapScopedWriteAccess pWriteAcc(aNewBmp);
+
+ if( pWriteAcc )
+ {
+ const tools::Long nWidth = pWriteAcc->Width();
+ const tools::Long nHeight = pWriteAcc->Height();
+
+ if( pReadAcc->HasPalette() )
+ {
+ for( tools::Long nY = 0; nY < nHeight; nY++ )
+ {
+ Scanline pScanline = pWriteAcc->GetScanline(nY);
+ Scanline pScanlineRead = pReadAcc->GetScanline(nY);
+ for( tools::Long nX = 0; nX < nWidth; nX++ )
+ {
+ const sal_uInt8 cIndex = pReadAcc->GetIndexFromData( pScanlineRead, nX );
+ pWriteAcc->SetPixelOnData( pScanline, nX,
+ BitmapColor(pReadAcc->GetPaletteColor( cIndex ).GetLuminance() >> nShift) );
+ }
+ }
+ }
+ else if( pReadAcc->GetScanlineFormat() == ScanlineFormat::N24BitTcBgr &&
+ pWriteAcc->GetScanlineFormat() == ScanlineFormat::N8BitPal )
+ {
+ nShift += 8;
+
+ for( tools::Long nY = 0; nY < nHeight; nY++ )
+ {
+ Scanline pReadScan = pReadAcc->GetScanline( nY );
+ Scanline pWriteScan = pWriteAcc->GetScanline( nY );
+
+ for( tools::Long nX = 0; nX < nWidth; nX++ )
+ {
+ const sal_uLong nB = *pReadScan++;
+ const sal_uLong nG = *pReadScan++;
+ const sal_uLong nR = *pReadScan++;
+
+ *pWriteScan++ = static_cast<sal_uInt8>( ( nB * 28UL + nG * 151UL + nR * 77UL ) >> nShift );
+ }
+ }
+ }
+ else if( pReadAcc->GetScanlineFormat() == ScanlineFormat::N24BitTcRgb &&
+ pWriteAcc->GetScanlineFormat() == ScanlineFormat::N8BitPal )
+ {
+ nShift += 8;
+
+ for( tools::Long nY = 0; nY < nHeight; nY++ )
+ {
+ Scanline pReadScan = pReadAcc->GetScanline( nY );
+ Scanline pWriteScan = pWriteAcc->GetScanline( nY );
+
+ for( tools::Long nX = 0; nX < nWidth; nX++ )
+ {
+ const sal_uLong nR = *pReadScan++;
+ const sal_uLong nG = *pReadScan++;
+ const sal_uLong nB = *pReadScan++;
+
+ *pWriteScan++ = static_cast<sal_uInt8>( ( nB * 28UL + nG * 151UL + nR * 77UL ) >> nShift );
+ }
+ }
+ }
+ else
+ {
+ for( tools::Long nY = 0; nY < nHeight; nY++ )
+ {
+ Scanline pScanline = pWriteAcc->GetScanline(nY);
+ Scanline pScanlineRead = pReadAcc->GetScanline(nY);
+ for( tools::Long nX = 0; nX < nWidth; nX++ )
+ pWriteAcc->SetPixelOnData( pScanline, nX, BitmapColor(pReadAcc->GetPixelFromData( pScanlineRead, nX ).GetLuminance() >> nShift) );
+ }
+ }
+
+ pWriteAcc.reset();
+ bRet = true;
+ }
+
+ pReadAcc.reset();
+
+ if( bRet )
+ {
+ const MapMode aMap( maPrefMapMode );
+ const Size aSize( maPrefSize );
+
+ *this = aNewBmp;
+
+ maPrefMapMode = aMap;
+ maPrefSize = aSize;
+ }
+ }
+ else
+ {
+ pReadAcc.reset();
+ bRet = true;
+ }
+ }
+
+ return bRet;
+}
+
+bool Bitmap::ImplConvertUp(vcl::PixelFormat ePixelFormat, Color const * pExtColor)
+{
+ SAL_WARN_IF(ePixelFormat <= getPixelFormat(), "vcl", "New pixel format must be greater!" );
+
+ Bitmap::ScopedReadAccess pReadAcc(*this);
+ bool bRet = false;
+
+ if (pReadAcc)
+ {
+ BitmapPalette aPalette;
+ Bitmap aNewBmp(GetSizePixel(), ePixelFormat, pReadAcc->HasPalette() ? &pReadAcc->GetPalette() : &aPalette);
+ BitmapScopedWriteAccess pWriteAcc(aNewBmp);
+
+ if (pWriteAcc)
+ {
+ const tools::Long nWidth = pWriteAcc->Width();
+ const tools::Long nHeight = pWriteAcc->Height();
+
+ if (pWriteAcc->HasPalette())
+ {
+ const BitmapPalette& rOldPalette = pReadAcc->GetPalette();
+ const sal_uInt16 nOldCount = rOldPalette.GetEntryCount();
+ assert(nOldCount <= (1 << vcl::pixelFormatBitCount(getPixelFormat())));
+
+ aPalette.SetEntryCount(1 << vcl::pixelFormatBitCount(ePixelFormat));
+
+ for (sal_uInt16 i = 0; i < nOldCount; i++)
+ aPalette[i] = rOldPalette[i];
+
+ if (pExtColor)
+ aPalette[aPalette.GetEntryCount() - 1] = *pExtColor;
+
+ pWriteAcc->SetPalette(aPalette);
+
+ for (tools::Long nY = 0; nY < nHeight; nY++)
+ {
+ Scanline pScanline = pWriteAcc->GetScanline(nY);
+ Scanline pScanlineRead = pReadAcc->GetScanline(nY);
+ for (tools::Long nX = 0; nX < nWidth; nX++)
+ {
+ pWriteAcc->SetPixelOnData(pScanline, nX, pReadAcc->GetPixelFromData(pScanlineRead, nX));
+ }
+ }
+ }
+ else
+ {
+ if (pReadAcc->HasPalette())
+ {
+ for (tools::Long nY = 0; nY < nHeight; nY++)
+ {
+ Scanline pScanline = pWriteAcc->GetScanline(nY);
+ Scanline pScanlineRead = pReadAcc->GetScanline(nY);
+ for (tools::Long nX = 0; nX < nWidth; nX++)
+ {
+ pWriteAcc->SetPixelOnData(pScanline, nX, pReadAcc->GetPaletteColor(pReadAcc->GetIndexFromData(pScanlineRead, nX)));
+ }
+ }
+ }
+ else
+ {
+ for (tools::Long nY = 0; nY < nHeight; nY++)
+ {
+ Scanline pScanline = pWriteAcc->GetScanline(nY);
+ Scanline pScanlineRead = pReadAcc->GetScanline(nY);
+ for (tools::Long nX = 0; nX < nWidth; nX++)
+ {
+ pWriteAcc->SetPixelOnData(pScanline, nX, pReadAcc->GetPixelFromData(pScanlineRead, nX));
+ }
+ }
+ }
+ }
+ bRet = true;
+ }
+
+ if (bRet)
+ {
+ const MapMode aMap(maPrefMapMode);
+ const Size aSize(maPrefSize);
+
+ *this = aNewBmp;
+
+ maPrefMapMode = aMap;
+ maPrefSize = aSize;
+ }
+ }
+
+ return bRet;
+}
+
+bool Bitmap::ImplConvertDown8BPP(Color const * pExtColor)
+{
+ SAL_WARN_IF(vcl::PixelFormat::N8_BPP > getPixelFormat(), "vcl", "New pixelformat must be lower ( or equal when pExtColor is set )!");
+
+ Bitmap::ScopedReadAccess pReadAcc(*this);
+ bool bRet = false;
+
+ if (pReadAcc)
+ {
+ BitmapPalette aPalette;
+ Bitmap aNewBmp(GetSizePixel(), vcl::PixelFormat::N8_BPP, &aPalette);
+ BitmapScopedWriteAccess pWriteAcc(aNewBmp);
+
+ if (pWriteAcc)
+ {
+ sal_Int16 nNewBitCount = sal_Int16(vcl::PixelFormat::N8_BPP);
+ const sal_uInt16 nCount = 1 << nNewBitCount;
+ const tools::Long nWidth = pWriteAcc->Width();
+ const tools::Long nWidth1 = nWidth - 1;
+ const tools::Long nHeight = pWriteAcc->Height();
+ Octree aOctree(*pReadAcc, pExtColor ? (nCount - 1) : nCount);
+ aPalette = aOctree.GetPalette();
+ InverseColorMap aColorMap(aPalette);
+ BitmapColor aColor;
+ ImpErrorQuad aErrQuad;
+ std::vector<ImpErrorQuad> aErrQuad1(nWidth);
+ std::vector<ImpErrorQuad> aErrQuad2(nWidth);
+ ImpErrorQuad* pQLine1 = aErrQuad1.data();
+ ImpErrorQuad* pQLine2 = nullptr;
+ tools::Long nYTmp = 0;
+ sal_uInt8 cIndex;
+ bool bQ1 = true;
+
+ if (pExtColor)
+ {
+ aPalette.SetEntryCount(aPalette.GetEntryCount() + 1);
+ aPalette[aPalette.GetEntryCount() - 1] = *pExtColor;
+ }
+
+ // set Black/White always, if we have enough space
+ if (aPalette.GetEntryCount() < (nCount - 1))
+ {
+ aPalette.SetEntryCount(aPalette.GetEntryCount() + 2);
+ aPalette[aPalette.GetEntryCount() - 2] = COL_BLACK;
+ aPalette[aPalette.GetEntryCount() - 1] = COL_WHITE;
+ }
+
+ pWriteAcc->SetPalette(aPalette);
+
+ for (tools::Long nY = 0; nY < std::min(nHeight, tools::Long(2)); nY++, nYTmp++)
+ {
+ pQLine2 = !nY ? aErrQuad1.data() : aErrQuad2.data();
+ Scanline pScanlineRead = pReadAcc->GetScanline(nYTmp);
+ for (tools::Long nX = 0; nX < nWidth; nX++)
+ {
+ if (pReadAcc->HasPalette())
+ pQLine2[nX] = pReadAcc->GetPaletteColor(pReadAcc->GetIndexFromData(pScanlineRead, nX));
+ else
+ pQLine2[nX] = pReadAcc->GetPixelFromData(pScanlineRead, nX);
+ }
+ }
+
+ assert(pQLine2 || nHeight == 0);
+
+ for (tools::Long nY = 0; nY < nHeight; nY++, nYTmp++)
+ {
+ // first pixel in the line
+ cIndex = static_cast<sal_uInt8>(aColorMap.GetBestPaletteIndex(pQLine1[0].ImplGetColor()));
+ Scanline pScanline = pWriteAcc->GetScanline(nY);
+ pWriteAcc->SetPixelOnData(pScanline, 0, BitmapColor(cIndex));
+
+ tools::Long nX;
+ for (nX = 1; nX < nWidth1; nX++)
+ {
+ aColor = pQLine1[nX].ImplGetColor();
+ cIndex = static_cast<sal_uInt8>(aColorMap.GetBestPaletteIndex(aColor));
+ aErrQuad = (ImpErrorQuad(aColor) -= pWriteAcc->GetPaletteColor(cIndex));
+ pQLine1[++nX].ImplAddColorError7(aErrQuad);
+ pQLine2[nX--].ImplAddColorError1(aErrQuad);
+ pQLine2[nX--].ImplAddColorError5(aErrQuad);
+ pQLine2[nX++].ImplAddColorError3(aErrQuad);
+ pWriteAcc->SetPixelOnData(pScanline, nX, BitmapColor(cIndex));
+ }
+
+ // Last RowPixel
+ if (nX < nWidth)
+ {
+ cIndex = static_cast<sal_uInt8>(aColorMap.GetBestPaletteIndex(pQLine1[nWidth1].ImplGetColor()));
+ pWriteAcc->SetPixelOnData(pScanline, nX, BitmapColor(cIndex));
+ }
+
+ // Refill/copy row buffer
+ pQLine1 = pQLine2;
+ bQ1 = !bQ1;
+ pQLine2 = bQ1 ? aErrQuad2.data() : aErrQuad1.data();
+
+ if (nYTmp < nHeight)
+ {
+ Scanline pScanlineRead = pReadAcc->GetScanline(nYTmp);
+ for (nX = 0; nX < nWidth; nX++)
+ {
+ if (pReadAcc->HasPalette())
+ pQLine2[nX] = pReadAcc->GetPaletteColor(pReadAcc->GetIndexFromData(pScanlineRead, nX));
+ else
+ pQLine2[nX] = pReadAcc->GetPixelFromData(pScanlineRead, nX);
+ }
+ }
+ }
+
+ bRet = true;
+ }
+ pWriteAcc.reset();
+
+ if(bRet)
+ {
+ const MapMode aMap(maPrefMapMode);
+ const Size aSize(maPrefSize);
+
+ *this = aNewBmp;
+
+ maPrefMapMode = aMap;
+ maPrefSize = aSize;
+ }
+ }
+
+ return bRet;
+}
+
+bool Bitmap::Scale( const double& rScaleX, const double& rScaleY, BmpScaleFlag nScaleFlag )
+{
+ if(basegfx::fTools::equalZero(rScaleX) || basegfx::fTools::equalZero(rScaleY))
+ {
+ // no scale
+ return true;
+ }
+
+ if(basegfx::fTools::equal(rScaleX, 1.0) && basegfx::fTools::equal(rScaleY, 1.0))
+ {
+ // no scale
+ return true;
+ }
+
+ const auto eStartPixelFormat = getPixelFormat();
+
+ if (mxSalBmp && mxSalBmp->ScalingSupported())
+ {
+ // implementation specific scaling
+ std::shared_ptr<SalBitmap> xImpBmp(ImplGetSVData()->mpDefInst->CreateSalBitmap());
+ if (xImpBmp->Create(*mxSalBmp) && xImpBmp->Scale(rScaleX, rScaleY, nScaleFlag))
+ {
+ ImplSetSalBitmap(xImpBmp);
+ SAL_INFO( "vcl.opengl", "Ref count: " << mxSalBmp.use_count() );
+ maPrefMapMode = MapMode( MapUnit::MapPixel );
+ maPrefSize = xImpBmp->GetSize();
+ return true;
+ }
+ }
+
+ // fdo#33455
+ //
+ // If we start with a 1 bit image, then after scaling it in any mode except
+ // BmpScaleFlag::Fast we have a 24bit image which is perfectly correct, but we
+ // are going to down-shift it to mono again and Bitmap::MakeMonochrome just
+ // has "Bitmap aNewBmp( GetSizePixel(), 1 );" to create a 1 bit bitmap which
+ // will default to black/white and the colors mapped to which ever is closer
+ // to black/white
+ //
+ // So the easiest thing to do to retain the colors of 1 bit bitmaps is to
+ // just use the fast scale rather than attempting to count unique colors in
+ // the other converters and pass all the info down through
+ // Bitmap::MakeMonochrome
+ if (eStartPixelFormat == vcl::PixelFormat::N1_BPP)
+ nScaleFlag = BmpScaleFlag::Fast;
+
+ BitmapEx aBmpEx(*this);
+ bool bRetval(false);
+
+ switch(nScaleFlag)
+ {
+ case BmpScaleFlag::Default:
+ if (GetSizePixel().Width() < 2 || GetSizePixel().Height() < 2)
+ bRetval = BitmapFilter::Filter(aBmpEx, BitmapFastScaleFilter(rScaleX, rScaleY));
+ else
+ bRetval = BitmapFilter::Filter(aBmpEx, BitmapScaleSuperFilter(rScaleX, rScaleY));
+ break;
+
+ case BmpScaleFlag::Fast:
+ case BmpScaleFlag::NearestNeighbor:
+ bRetval = BitmapFilter::Filter(aBmpEx, BitmapFastScaleFilter(rScaleX, rScaleY));
+ break;
+
+ case BmpScaleFlag::Interpolate:
+ bRetval = BitmapFilter::Filter(aBmpEx, BitmapInterpolateScaleFilter(rScaleX, rScaleY));
+ break;
+
+ case BmpScaleFlag::BestQuality:
+ case BmpScaleFlag::Lanczos:
+ bRetval = BitmapFilter::Filter(aBmpEx, vcl::BitmapScaleLanczos3Filter(rScaleX, rScaleY));
+ break;
+
+ case BmpScaleFlag::BiCubic:
+ bRetval = BitmapFilter::Filter(aBmpEx, vcl::BitmapScaleBicubicFilter(rScaleX, rScaleY));
+ break;
+
+ case BmpScaleFlag::BiLinear:
+ bRetval = BitmapFilter::Filter(aBmpEx, vcl::BitmapScaleBilinearFilter(rScaleX, rScaleY));
+ break;
+ }
+
+ if (bRetval)
+ *this = aBmpEx.GetBitmap();
+
+ OSL_ENSURE(!bRetval || eStartPixelFormat == getPixelFormat(), "Bitmap::Scale has changed the ColorDepth, this should *not* happen (!)");
+ return bRetval;
+}
+
+bool Bitmap::Scale( const Size& rNewSize, BmpScaleFlag nScaleFlag )
+{
+ const Size aSize( GetSizePixel() );
+ bool bRet;
+
+ if( aSize.Width() && aSize.Height() )
+ {
+ bRet = Scale( static_cast<double>(rNewSize.Width()) / aSize.Width(),
+ static_cast<double>(rNewSize.Height()) / aSize.Height(),
+ nScaleFlag );
+ }
+ else
+ bRet = true;
+
+ return bRet;
+}
+
+bool Bitmap::HasFastScale()
+{
+#if HAVE_FEATURE_SKIA
+ if( SkiaHelper::isVCLSkiaEnabled() && SkiaHelper::renderMethodToUse() != SkiaHelper::RenderRaster)
+ return true;
+#endif
+ return false;
+}
+
+void Bitmap::AdaptBitCount(Bitmap& rNew) const
+{
+ // aNew is the result of some operation; adapt it's BitCount to the original (this)
+ if (getPixelFormat() == rNew.getPixelFormat())
+ return;
+
+ switch (getPixelFormat())
+ {
+ case vcl::PixelFormat::N1_BPP:
+ {
+ rNew.Convert(BmpConversion::N1BitThreshold);
+ break;
+ }
+ case vcl::PixelFormat::N8_BPP:
+ {
+ if(HasGreyPaletteAny())
+ {
+ rNew.Convert(BmpConversion::N8BitGreys);
+ }
+ else
+ {
+ rNew.Convert(BmpConversion::N8BitColors);
+ }
+ break;
+ }
+ case vcl::PixelFormat::N24_BPP:
+ {
+ rNew.Convert(BmpConversion::N24Bit);
+ break;
+ }
+ case vcl::PixelFormat::N32_BPP:
+ {
+ rNew.Convert(BmpConversion::N32Bit);
+ break;
+ }
+ case vcl::PixelFormat::INVALID:
+ {
+ SAL_WARN("vcl", "Can't adapt the pixelformat as it is invalid.");
+ break;
+ }
+ }
+}
+
+static sal_Int32* shiftColor(sal_Int32* pColorArray, BitmapColor const& rColor)
+{
+ *pColorArray++ = static_cast<sal_Int32>(rColor.GetBlue()) << 12;
+ *pColorArray++ = static_cast<sal_Int32>(rColor.GetGreen()) << 12;
+ *pColorArray++ = static_cast<sal_Int32>(rColor.GetRed()) << 12;
+ return pColorArray;
+}
+static BitmapColor getColor(const BitmapReadAccess *pReadAcc, tools::Long nZ)
+{
+ Scanline pScanlineRead = pReadAcc->GetScanline(0);
+ if (pReadAcc->HasPalette())
+ return pReadAcc->GetPaletteColor(pReadAcc->GetIndexFromData(pScanlineRead, nZ));
+ else
+ return pReadAcc->GetPixelFromData(pScanlineRead, nZ);
+}
+
+bool Bitmap::Dither()
+{
+ const Size aSize( GetSizePixel() );
+ if( aSize.Width() == 1 || aSize.Height() == 1 )
+ return true;
+ if( ( aSize.Width() > 3 ) && ( aSize.Height() > 2 ) )
+ {
+ ScopedReadAccess pReadAcc(*this);
+ Bitmap aNewBmp(GetSizePixel(), vcl::PixelFormat::N8_BPP);
+ BitmapScopedWriteAccess pWriteAcc(aNewBmp);
+ if( pReadAcc && pWriteAcc )
+ {
+ tools::Long nWidth = pReadAcc->Width();
+ tools::Long nWidth1 = nWidth - 1;
+ tools::Long nHeight = pReadAcc->Height();
+ tools::Long nW = nWidth * 3;
+ tools::Long nW2 = nW - 3;
+ std::unique_ptr<sal_Int32[]> p1(new sal_Int32[ nW ]);
+ std::unique_ptr<sal_Int32[]> p2(new sal_Int32[ nW ]);
+ sal_Int32* p1T = p1.get();
+ sal_Int32* p2T = p2.get();
+ sal_Int32* pTmp = p2T;
+ for (tools::Long nZ = 0; nZ < nWidth; nZ++)
+ {
+ pTmp = shiftColor(pTmp, getColor(pReadAcc.get(), nZ));
+ }
+ tools::Long nRErr, nGErr, nBErr;
+ tools::Long nRC, nGC, nBC;
+ for( tools::Long nY = 1, nYAcc = 0; nY <= nHeight; nY++, nYAcc++ )
+ {
+ pTmp = p1T;
+ p1T = p2T;
+ p2T = pTmp;
+ if (nY < nHeight)
+ {
+ for (tools::Long nZ = 0; nZ < nWidth; nZ++)
+ {
+ pTmp = shiftColor(pTmp, getColor(pReadAcc.get(), nZ));
+ }
+ }
+ // Examine first Pixel separately
+ tools::Long nX = 0;
+ tools::Long nTemp;
+ CALC_ERRORS;
+ CALC_TABLES7;
+ nX -= 5;
+ CALC_TABLES5;
+ Scanline pScanline = pWriteAcc->GetScanline(nYAcc);
+ pWriteAcc->SetPixelOnData( pScanline, 0, BitmapColor(static_cast<sal_uInt8>(nVCLBLut[ nBC ] + nVCLGLut[nGC ] + nVCLRLut[nRC ])) );
+ // Get middle Pixels using a loop
+ tools::Long nXAcc;
+ for ( nX = 3, nXAcc = 1; nX < nW2; nXAcc++ )
+ {
+ CALC_ERRORS;
+ CALC_TABLES7;
+ nX -= 8;
+ CALC_TABLES3;
+ CALC_TABLES5;
+ pWriteAcc->SetPixelOnData( pScanline, nXAcc, BitmapColor(static_cast<sal_uInt8>(nVCLBLut[ nBC ] + nVCLGLut[nGC ] + nVCLRLut[nRC ])) );
+ }
+ // Treat last Pixel separately
+ CALC_ERRORS;
+ nX -= 5;
+ CALC_TABLES3;
+ CALC_TABLES5;
+ pWriteAcc->SetPixelOnData( pScanline, nWidth1, BitmapColor(static_cast<sal_uInt8>(nVCLBLut[ nBC ] + nVCLGLut[nGC ] + nVCLRLut[nRC ])) );
+ }
+ pReadAcc.reset();
+ pWriteAcc.reset();
+ const MapMode aMap( maPrefMapMode );
+ const Size aPrefSize( maPrefSize );
+ *this = aNewBmp;
+ maPrefMapMode = aMap;
+ maPrefSize = aPrefSize;
+ return true;
+ }
+ pReadAcc.reset();
+ pWriteAcc.reset();
+ }
+ return false;
+}
+
+void Bitmap::Vectorize( GDIMetaFile& rMtf, sal_uInt8 cReduce, const Link<tools::Long,void>* pProgress )
+{
+ ImplVectorizer::ImplVectorize( *this, rMtf, cReduce, pProgress );
+}
+
+bool Bitmap::Adjust( short nLuminancePercent, short nContrastPercent,
+ short nChannelRPercent, short nChannelGPercent, short nChannelBPercent,
+ double fGamma, bool bInvert, bool msoBrightness )
+{
+ bool bRet = false;
+
+ // nothing to do => return quickly
+ if( !nLuminancePercent && !nContrastPercent &&
+ !nChannelRPercent && !nChannelGPercent && !nChannelBPercent &&
+ ( fGamma == 1.0 ) && !bInvert )
+ {
+ bRet = true;
+ }
+ else
+ {
+ BitmapScopedWriteAccess pAcc(*this);
+
+ if( pAcc )
+ {
+ BitmapColor aCol;
+ const tools::Long nW = pAcc->Width();
+ const tools::Long nH = pAcc->Height();
+ std::unique_ptr<sal_uInt8[]> cMapR(new sal_uInt8[ 256 ]);
+ std::unique_ptr<sal_uInt8[]> cMapG(new sal_uInt8[ 256 ]);
+ std::unique_ptr<sal_uInt8[]> cMapB(new sal_uInt8[ 256 ]);
+ double fM, fROff, fGOff, fBOff, fOff;
+
+ // calculate slope
+ if( nContrastPercent >= 0 )
+ fM = 128.0 / ( 128.0 - 1.27 * MinMax( nContrastPercent, 0, 100 ) );
+ else
+ fM = ( 128.0 + 1.27 * MinMax( nContrastPercent, -100, 0 ) ) / 128.0;
+
+ if(!msoBrightness)
+ // total offset = luminance offset + contrast offset
+ fOff = MinMax( nLuminancePercent, -100, 100 ) * 2.55 + 128.0 - fM * 128.0;
+ else
+ fOff = MinMax( nLuminancePercent, -100, 100 ) * 2.55;
+
+ // channel offset = channel offset + total offset
+ fROff = nChannelRPercent * 2.55 + fOff;
+ fGOff = nChannelGPercent * 2.55 + fOff;
+ fBOff = nChannelBPercent * 2.55 + fOff;
+
+ // calculate gamma value
+ fGamma = ( fGamma <= 0.0 || fGamma > 10.0 ) ? 1.0 : ( 1.0 / fGamma );
+ const bool bGamma = ( fGamma != 1.0 );
+
+ // create mapping table
+ for( tools::Long nX = 0; nX < 256; nX++ )
+ {
+ if(!msoBrightness)
+ {
+ cMapR[ nX ] = static_cast<sal_uInt8>(MinMax( FRound( nX * fM + fROff ), 0, 255 ));
+ cMapG[ nX ] = static_cast<sal_uInt8>(MinMax( FRound( nX * fM + fGOff ), 0, 255 ));
+ cMapB[ nX ] = static_cast<sal_uInt8>(MinMax( FRound( nX * fM + fBOff ), 0, 255 ));
+ }
+ else
+ {
+ // LO simply uses (in a somewhat optimized form) "newcolor = (oldcolor-128)*contrast+brightness+128"
+ // as the formula, i.e. contrast first, brightness afterwards. MSOffice, for whatever weird reason,
+ // use neither first, but apparently it applies half of brightness before contrast and half afterwards.
+ cMapR[ nX ] = static_cast<sal_uInt8>(MinMax( FRound( (nX+fROff/2-128) * fM + 128 + fROff/2 ), 0, 255 ));
+ cMapG[ nX ] = static_cast<sal_uInt8>(MinMax( FRound( (nX+fGOff/2-128) * fM + 128 + fGOff/2 ), 0, 255 ));
+ cMapB[ nX ] = static_cast<sal_uInt8>(MinMax( FRound( (nX+fBOff/2-128) * fM + 128 + fBOff/2 ), 0, 255 ));
+ }
+ if( bGamma )
+ {
+ cMapR[ nX ] = GAMMA( cMapR[ nX ], fGamma );
+ cMapG[ nX ] = GAMMA( cMapG[ nX ], fGamma );
+ cMapB[ nX ] = GAMMA( cMapB[ nX ], fGamma );
+ }
+
+ if( bInvert )
+ {
+ cMapR[ nX ] = ~cMapR[ nX ];
+ cMapG[ nX ] = ~cMapG[ nX ];
+ cMapB[ nX ] = ~cMapB[ nX ];
+ }
+ }
+
+ // do modifying
+ if( pAcc->HasPalette() )
+ {
+ BitmapColor aNewCol;
+
+ for( sal_uInt16 i = 0, nCount = pAcc->GetPaletteEntryCount(); i < nCount; i++ )
+ {
+ const BitmapColor& rCol = pAcc->GetPaletteColor( i );
+ aNewCol.SetRed( cMapR[ rCol.GetRed() ] );
+ aNewCol.SetGreen( cMapG[ rCol.GetGreen() ] );
+ aNewCol.SetBlue( cMapB[ rCol.GetBlue() ] );
+ pAcc->SetPaletteColor( i, aNewCol );
+ }
+ }
+ else if( pAcc->GetScanlineFormat() == ScanlineFormat::N24BitTcBgr )
+ {
+ for( tools::Long nY = 0; nY < nH; nY++ )
+ {
+ Scanline pScan = pAcc->GetScanline( nY );
+
+ for( tools::Long nX = 0; nX < nW; nX++ )
+ {
+ *pScan = cMapB[ *pScan ]; pScan++;
+ *pScan = cMapG[ *pScan ]; pScan++;
+ *pScan = cMapR[ *pScan ]; pScan++;
+ }
+ }
+ }
+ else if( pAcc->GetScanlineFormat() == ScanlineFormat::N24BitTcRgb )
+ {
+ for( tools::Long nY = 0; nY < nH; nY++ )
+ {
+ Scanline pScan = pAcc->GetScanline( nY );
+
+ for( tools::Long nX = 0; nX < nW; nX++ )
+ {
+ *pScan = cMapR[ *pScan ]; pScan++;
+ *pScan = cMapG[ *pScan ]; pScan++;
+ *pScan = cMapB[ *pScan ]; pScan++;
+ }
+ }
+ }
+ else
+ {
+ for( tools::Long nY = 0; nY < nH; nY++ )
+ {
+ Scanline pScanline = pAcc->GetScanline(nY);
+ for( tools::Long nX = 0; nX < nW; nX++ )
+ {
+ aCol = pAcc->GetPixelFromData( pScanline, nX );
+ aCol.SetRed( cMapR[ aCol.GetRed() ] );
+ aCol.SetGreen( cMapG[ aCol.GetGreen() ] );
+ aCol.SetBlue( cMapB[ aCol.GetBlue() ] );
+ pAcc->SetPixelOnData( pScanline, nX, aCol );
+ }
+ }
+ }
+
+ pAcc.reset();
+ bRet = true;
+ }
+ }
+
+ return bRet;
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
generated by cgit v1.2.3 (git 2.39.1) at 2024-10-01 02:52:27 +0000