/* -*- 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 <utility>
#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/bitmap/BitmapMonochromeFilter.hxx>
#include <bitmap/BitmapScaleSuperFilter.hxx>
#include <bitmap/BitmapScaleConvolutionFilter.hxx>
#include <bitmap/BitmapFastScaleFilter.hxx>
#include <bitmap/BitmapInterpolateScaleFilter.hxx>
#include <vcl/BitmapWriteAccess.hxx>
#include <bitmap/impoctree.hxx>
#include <bitmap/Octree.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> pSalBitmap)
: mxSalBmp(std::move(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;
switch (ePixelFormat)
{
case vcl::PixelFormat::N8_BPP:
{
static const BitmapPalette aPalN8_BPP = [] {
BitmapPalette aPal(1 << sal_uInt16(vcl::PixelFormat::N8_BPP));
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
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 );
return aPal;
}();
if (!pPal)
pPal = &aPalN8_BPP;
break;
}
default:
{
static const BitmapPalette aPalEmpty;
if (!pPal || !vcl::isPalettePixelFormat(ePixelFormat))
pPal = &aPalEmpty;
break;
}
}
mxSalBmp = ImplGetSVData()->mpDefInst->CreateSalBitmap();
mxSalBmp->Create(rSizePixel, ePixelFormat, *pPal);
}
#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:/path/ or ~/path/
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 + "BitmapDump.png", *this);
}
#endif
}
namespace
{
template <size_t N>
constexpr std::enable_if_t<255 % (N - 1) == 0, std::array<BitmapColor, N>> getGreyscalePalette()
{
const int step = 255 / (N - 1);
std::array<BitmapColor, N> a;
for (size_t i = 0; i < N; ++i)
a[i] = BitmapColor(i * step, i * step, i * step);
return a;
}
}
const BitmapPalette& Bitmap::GetGreyPalette( int nEntries )
{
// Create greyscale palette with 2, 4, 16 or 256 entries
switch (nEntries)
{
case 2:
{
static const BitmapPalette aGreyPalette2 = getGreyscalePalette<2>();
return aGreyPalette2;
}
case 4:
{
static const BitmapPalette aGreyPalette4 = getGreyscalePalette<4>();
return aGreyPalette4;
}
case 16:
{
static const BitmapPalette aGreyPalette16 = getGreyscalePalette<16>();
return aGreyPalette16;
}
case 256:
{
static const BitmapPalette aGreyPalette256 = getGreyscalePalette<256>();
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 <= 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 = false;
BitmapScopedInfoAccess pIAcc(*this);
if( pIAcc )
{
bRet = pIAcc->HasPalette() && pIAcc->GetPalette().IsGreyPaletteAny();
}
return bRet;
}
bool Bitmap::HasGreyPalette8Bit() const
{
bool bRet = false;
BitmapScopedInfoAccess pIAcc(*this);
if( pIAcc )
{
bRet = pIAcc->HasPalette() && pIAcc->GetPalette().IsGreyPalette8Bit();
}
return bRet;
}
BitmapChecksum Bitmap::GetChecksum() const
{
if( !mxSalBmp )
return 0;
BitmapChecksum 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 = std::move(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(maPrefSize.Width() * aNewSizePix.Width() / aOldSizePix.Width());
aNewPrefSize.setHeight(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;
}
bool Bitmap::Crop( const tools::Rectangle& rRectPixel )
{
const Size aSizePix( GetSizePixel() );
tools::Rectangle aRect( rRectPixel );
aRect.Intersection( tools::Rectangle( Point(), aSizePix ) );
if( aRect.IsEmpty() || aSizePix == aRect.GetSize())
return false;
BitmapScopedReadAccess pReadAcc(*this);
if( !pReadAcc )
return false;
const tools::Rectangle aNewRect( Point(), aRect.GetSize() );
Bitmap aNewBmp(aNewRect.GetSize(), getPixelFormat(), &pReadAcc->GetPalette());
BitmapScopedWriteAccess pWriteAcc(aNewBmp);
if( !pWriteAcc )
return false;
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();
pReadAcc.reset();
ReassignWithSize( aNewBmp );
return true;
};
bool Bitmap::CopyPixel( const tools::Rectangle& rRectDst,
const tools::Rectangle& rRectSrc )
{
const Size aSizePix( GetSizePixel() );
tools::Rectangle aRectDst( rRectDst );
aRectDst.Intersection( tools::Rectangle( Point(), aSizePix ) );
if( aRectDst.IsEmpty() )
return false;
tools::Rectangle aRectSrc( rRectSrc );
aRectSrc.Intersection( tools::Rectangle( Point(), aSizePix ) );
if( aRectSrc.IsEmpty() || ( aRectSrc == aRectDst ) )
return false;
BitmapScopedWriteAccess pWriteAcc(*this);
if( !pWriteAcc )
return false;
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 ) );
}
}
return true;
}
bool Bitmap::CopyPixel( const tools::Rectangle& rRectDst,
const tools::Rectangle& rRectSrc, const Bitmap& rBmpSrc )
{
const Size aSizePix( GetSizePixel() );
tools::Rectangle aRectDst( rRectDst );
aRectDst.Intersection( tools::Rectangle( Point(), aSizePix ) );
if( aRectDst.IsEmpty() )
return false;
if( rBmpSrc.mxSalBmp == mxSalBmp ) // if self-copy
return CopyPixel(rRectDst, rRectSrc);
Bitmap* pSrc = &const_cast<Bitmap&>(rBmpSrc);
const Size aCopySizePix( pSrc->GetSizePixel() );
tools::Rectangle aRectSrc( rRectSrc );
const sal_uInt16 nSrcBitCount = vcl::pixelFormatBitCount(rBmpSrc.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 )
{
BitmapScopedReadAccess 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() )
return false;
BitmapScopedReadAccess pReadAcc(*pSrc);
if( !pReadAcc )
return false;
BitmapScopedWriteAccess pWriteAcc(*this);
if( !pWriteAcc )
return false;
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 ) );
}
bool bRet = ( nWidth > 0 ) && ( nHeight > 0 );
return bRet;
}
bool Bitmap::CopyPixel_AlphaOptimized( const tools::Rectangle& rRectDst, const tools::Rectangle& rRectSrc )
{
assert(HasGreyPalette8Bit());
// 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 );
aRectDst.Intersection( tools::Rectangle( Point(), aSizePix ) );
if( aRectDst.IsEmpty() )
return false;
tools::Rectangle aRectSrc( rRectSrc );
aRectSrc.Intersection( tools::Rectangle( Point(), aSizePix ) );
if( aRectSrc.IsEmpty() || ( aRectSrc == aRectDst ) )
return false;
BitmapScopedWriteAccess pWriteAcc(*this);
if( !pWriteAcc )
return false;
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 ) );
}
}
return true;
}
bool Bitmap::CopyPixel_AlphaOptimized( const tools::Rectangle& rRectDst, const tools::Rectangle& rRectSrc,
const AlphaMask& rBmpSrc )
{
assert(HasGreyPalette8Bit());
assert(rBmpSrc.GetBitmap().HasGreyPalette8Bit());
// 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 );
aRectDst.Intersection( tools::Rectangle( Point(), aSizePix ) );
if( aRectDst.IsEmpty() )
return false;
if( rBmpSrc.GetBitmap().mxSalBmp == mxSalBmp ) // self-copy
return CopyPixel_AlphaOptimized(rRectDst, rRectSrc);
Bitmap* pSrc = &const_cast<Bitmap&>(rBmpSrc.GetBitmap());
const Size aCopySizePix( pSrc->GetSizePixel() );
tools::Rectangle aRectSrc( rRectSrc );
aRectSrc.Intersection( tools::Rectangle( Point(), aCopySizePix ) );
if( aRectSrc.IsEmpty() )
return false;
BitmapScopedReadAccess pReadAcc(*pSrc);
if( !pReadAcc )
return false;
BitmapScopedWriteAccess pWriteAcc(*this);
if( !pWriteAcc )
return false;
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 ) );
}
bool bRet = ( nWidth > 0 ) && ( nHeight > 0 );
return bRet;
}
bool Bitmap::Expand( sal_Int32 nDX, sal_Int32 nDY, const Color* pInitColor )
{
if( !nDX && !nDY )
return false;
const Size aSizePixel( GetSizePixel() );
const tools::Long nWidth = aSizePixel.Width();
const tools::Long nHeight = aSizePixel.Height();
const Size aNewSize( nWidth + nDX, nHeight + nDY );
BitmapScopedReadAccess pReadAcc(*this);
if( !pReadAcc )
return false;
BitmapPalette aBmpPal( pReadAcc->GetPalette() );
Bitmap aNewBmp(aNewSize, getPixelFormat(), &aBmpPal);
BitmapScopedWriteAccess pWriteAcc(aNewBmp);
if( !pWriteAcc )
return false;
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();
pReadAcc.reset();
ReassignWithSize(aNewBmp);
return true;
}
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()
{
BitmapScopedReadAccess pReadAcc(*this);
if( !pReadAcc )
return false;
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 )
return true;
const auto ePixelFormat = vcl::PixelFormat::N8_BPP;
Bitmap aNewBmp(GetSizePixel(), ePixelFormat, &rPal );
BitmapScopedWriteAccess pWriteAcc(aNewBmp);
if( !pWriteAcc )
return false;
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();
pReadAcc.reset();
const MapMode aMap( maPrefMapMode );
const Size aSize( maPrefSize );
*this = std::move(aNewBmp);
maPrefMapMode = aMap;
maPrefSize = aSize;
return true;
}
bool Bitmap::ImplConvertUp(vcl::PixelFormat ePixelFormat, Color const * pExtColor)
{
SAL_WARN_IF(ePixelFormat <= getPixelFormat(), "vcl", "New pixel format must be greater!" );
BitmapScopedReadAccess pReadAcc(*this);
if (!pReadAcc)
return false;
BitmapPalette aPalette;
Bitmap aNewBmp(GetSizePixel(), ePixelFormat, pReadAcc->HasPalette() ? &pReadAcc->GetPalette() : &aPalette);
BitmapScopedWriteAccess pWriteAcc(aNewBmp);
if (!pWriteAcc)
return false;
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));
}
}
}
}
const MapMode aMap(maPrefMapMode);
const Size aSize(maPrefSize);
*this = std::move(aNewBmp);
maPrefMapMode = aMap;
maPrefSize = aSize;
return true;
}
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 )!");
BitmapScopedReadAccess pReadAcc(*this);
if (!pReadAcc)
return false;
BitmapPalette aPalette;
Bitmap aNewBmp(GetSizePixel(), vcl::PixelFormat::N8_BPP, &aPalette);
BitmapScopedWriteAccess pWriteAcc(aNewBmp);
if (!pWriteAcc)
return false;
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);
}
}
}
pWriteAcc.reset();
const MapMode aMap(maPrefMapMode);
const Size aSize(maPrefSize);
*this = std::move(aNewBmp);
maPrefMapMode = aMap;
maPrefSize = aSize;
return true;
}
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;
}
}
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::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 void shiftColors(sal_Int32* pColorArray, const BitmapScopedReadAccess& pReadAcc)
{
Scanline pScanlineRead = pReadAcc->GetScanline(0); // Why always 0?
for (tools::Long n = 0; n < pReadAcc->Width(); ++n)
{
const BitmapColor aColor = pReadAcc->GetColorFromData(pScanlineRead, n);
*pColorArray++ = static_cast<sal_Int32>(aColor.GetBlue()) << 12;
*pColorArray++ = static_cast<sal_Int32>(aColor.GetGreen()) << 12;
*pColorArray++ = static_cast<sal_Int32>(aColor.GetRed()) << 12;
}
}
bool Bitmap::Dither()
{
const Size aSize( GetSizePixel() );
if( aSize.Width() == 1 || aSize.Height() == 1 )
return true;
if( ( aSize.Width() <= 3 ) || ( aSize.Height() <= 2 ) )
return false;
BitmapScopedReadAccess pReadAcc(*this);
Bitmap aNewBmp(GetSizePixel(), vcl::PixelFormat::N8_BPP);
BitmapScopedWriteAccess pWriteAcc(aNewBmp);
if( !pReadAcc || !pWriteAcc )
return false;
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();
shiftColors(p2T, pReadAcc);
for( tools::Long nYAcc = 0; nYAcc < nHeight; nYAcc++ )
{
std::swap(p1T, p2T);
if (nYAcc < nHeight - 1)
shiftColors(p2T, pReadAcc);
auto CalcError = [](tools::Long n)
{
n = std::clamp<tools::Long>(n >> 12, 0, 255);
return std::pair(FloydErrMap[n], FloydMap[n]);
};
auto CalcErrors = [&](tools::Long n)
{ return std::tuple_cat(CalcError(p1T[n]), CalcError(p1T[n + 1]), CalcError(p1T[n + 2])); };
auto CalcT = [](sal_Int32* dst, const int* src, int b, int g, int r)
{
dst[0] += src[b];
dst[1] += src[g];
dst[2] += src[r];
};
auto Calc1 = [&](int x, int b, int g, int r) { CalcT(p2T + x + 3, FloydError1, b, g, r); };
auto Calc3 = [&](int x, int b, int g, int r) { CalcT(p2T + x - 3, FloydError3, b, g, r); };
auto Calc5 = [&](int x, int b, int g, int r) { CalcT(p2T + x, FloydError5, b, g, r); };
auto Calc7 = [&](int x, int b, int g, int r) { CalcT(p1T + x + 3, FloydError7, b, g, r); };
Scanline pScanline = pWriteAcc->GetScanline(nYAcc);
// Examine first Pixel separately
{
auto [nBErr, nBC, nGErr, nGC, nRErr, nRC] = CalcErrors(0);
Calc1(0, nBErr, nGErr, nRErr);
Calc5(0, nBErr, nGErr, nRErr);
Calc7(0, nBErr, nGErr, nRErr);
pWriteAcc->SetPixelOnData( pScanline, 0, BitmapColor(static_cast<sal_uInt8>(nVCLBLut[ nBC ] + nVCLGLut[nGC ] + nVCLRLut[nRC ])) );
}
// Get middle Pixels using a loop
for ( tools::Long nX = 3, nXAcc = 1; nX < nW2; nX += 3, nXAcc++ )
{
auto [nBErr, nBC, nGErr, nGC, nRErr, nRC] = CalcErrors(nX);
Calc1(nX, nBErr, nGErr, nRErr);
Calc3(nX, nBErr, nGErr, nRErr);
Calc5(nX, nBErr, nGErr, nRErr);
Calc7(nX, nBErr, nGErr, nRErr);
pWriteAcc->SetPixelOnData( pScanline, nXAcc, BitmapColor(static_cast<sal_uInt8>(nVCLBLut[ nBC ] + nVCLGLut[nGC ] + nVCLRLut[nRC ])) );
}
// Treat last Pixel separately
{
auto [nBErr, nBC, nGErr, nGC, nRErr, nRC] = CalcErrors(nW2);
Calc3(nW2, nBErr, nGErr, nRErr);
Calc5(nW2, nBErr, nGErr, nRErr);
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 = std::move(aNewBmp);
maPrefMapMode = aMap;
maPrefSize = aPrefSize;
return true;
}
bool Bitmap::Adjust( short nLuminancePercent, short nContrastPercent,
short nChannelRPercent, short nChannelGPercent, short nChannelBPercent,
double fGamma, bool bInvert, bool msoBrightness )
{
// nothing to do => return quickly
if( !nLuminancePercent && !nContrastPercent &&
!nChannelRPercent && !nChannelGPercent && !nChannelBPercent &&
( fGamma == 1.0 ) && !bInvert )
{
return true;
}
BitmapScopedWriteAccess pAcc(*this);
if( !pAcc )
return false;
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 * std::clamp( nContrastPercent, short(0), short(100) ) );
else
fM = ( 128.0 + 1.27 * std::clamp( nContrastPercent, short(-100), short(0) ) ) / 128.0;
if(!msoBrightness)
// total offset = luminance offset + contrast offset
fOff = std::clamp( nLuminancePercent, short(-100), short(100) ) * 2.55 + 128.0 - fM * 128.0;
else
fOff = std::clamp( nLuminancePercent, short(-100), short(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] = basegfx::fround<sal_uInt8>(nX * fM + fROff);
cMapG[nX] = basegfx::fround<sal_uInt8>(nX * fM + fGOff);
cMapB[nX] = basegfx::fround<sal_uInt8>(nX * fM + fBOff);
}
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] = basegfx::fround<sal_uInt8>((nX + fROff / 2 - 128) * fM + 128 + fROff / 2);
cMapG[nX] = basegfx::fround<sal_uInt8>((nX + fGOff / 2 - 128) * fM + 128 + fGOff / 2);
cMapB[nX] = basegfx::fround<sal_uInt8>((nX + fBOff / 2 - 128) * fM + 128 + fBOff / 2);
}
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();
return true;
}
namespace
{
inline sal_uInt8 backBlendAlpha(sal_uInt16 alpha, sal_uInt16 srcCol, sal_uInt16 startCol)
{
const sal_uInt16 nAlpha((alpha * startCol) / 255);
if(srcCol > nAlpha)
{
return static_cast<sal_uInt8>(((srcCol - nAlpha) * 255) / (255 - nAlpha));
}
return 0;
}
}
void Bitmap::RemoveBlendedStartColor(
const Color& rStartColor,
const AlphaMask& rAlphaMask)
{
// no content, done
if(IsEmpty())
return;
BitmapScopedWriteAccess pAcc(*this);
const tools::Long nHeight(pAcc->Height());
const tools::Long nWidth(pAcc->Width());
// no content, done
if(0 == nHeight || 0 == nWidth)
return;
BitmapScopedReadAccess pAlphaAcc(rAlphaMask);
// inequal sizes of content and alpha, avoid change (maybe assert?)
if(pAlphaAcc->Height() != nHeight || pAlphaAcc->Width() != nWidth)
return;
// prepare local values as sal_uInt16 to avoid multiple conversions
const sal_uInt16 nStartColRed(rStartColor.GetRed());
const sal_uInt16 nStartColGreen(rStartColor.GetGreen());
const sal_uInt16 nStartColBlue(rStartColor.GetBlue());
for (tools::Long y = 0; y < nHeight; ++y)
{
for (tools::Long x = 0; x < nWidth; ++x)
{
// get alpha value
const sal_uInt8 nAlpha8(pAlphaAcc->GetColor(y, x).GetRed());
// not or completely transparent, no adaptation needed
if(0 == nAlpha8 || 255 == nAlpha8)
continue;
// prepare local value as sal_uInt16 to avoid multiple conversions
const sal_uInt16 nAlpha16(static_cast<sal_uInt16>(nAlpha8));
// get source color
BitmapColor aColor(pAcc->GetColor(y, x));
// modify/blend back source color
aColor.SetRed(backBlendAlpha(nAlpha16, static_cast<sal_uInt16>(aColor.GetRed()), nStartColRed));
aColor.SetGreen(backBlendAlpha(nAlpha16, static_cast<sal_uInt16>(aColor.GetGreen()), nStartColGreen));
aColor.SetBlue(backBlendAlpha(nAlpha16, static_cast<sal_uInt16>(aColor.GetBlue()), nStartColBlue));
// write result back
pAcc->SetPixel(y, x, aColor);
}
}
}
const basegfx::SystemDependentDataHolder* Bitmap::accessSystemDependentDataHolder() const
{
if(!mxSalBmp)
return nullptr;
return mxSalBmp->accessSystemDependentDataHolder();
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
↑ V530 The return value of function 'Intersection' is required to be utilized.
↑ V530 The return value of function 'Intersection' is required to be utilized.
↑ V530 The return value of function 'Intersection' is required to be utilized.
↑ V530 The return value of function 'Intersection' is required to be utilized.
↑ V530 The return value of function 'Intersection' is required to be utilized.
↑ V530 The return value of function 'Intersection' is required to be utilized.
↑ V530 The return value of function 'Intersection' is required to be utilized.
↑ V530 The return value of function 'Intersection' is required to be utilized.
↑ V530 The return value of function 'Intersection' is required to be utilized.