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-rw-r--r--vcl/quartz/salbmp.cxx751
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diff --git a/vcl/quartz/salbmp.cxx b/vcl/quartz/salbmp.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 <sal/config.h>
+#include <sal/log.hxx>
+#include <osl/diagnose.h>
+
+#include <cstddef>
+#include <limits>
+
+#include <o3tl/make_shared.hxx>
+#include <tools/color.hxx>
+#include <vcl/bitmap.hxx>
+#include <vcl/BitmapAccessMode.hxx>
+#include <vcl/BitmapBuffer.hxx>
+#include <vcl/BitmapColor.hxx>
+#include <vcl/BitmapPalette.hxx>
+#include <vcl/ColorMask.hxx>
+#include <vcl/Scanline.hxx>
+
+#include <bitmap/bmpfast.hxx>
+#include <quartz/salbmp.h>
+#include <quartz/utils.h>
+#include <bitmap/ScanlineTools.hxx>
+
+#ifdef MACOSX
+#include <osx/saldata.hxx>
+#else
+#include <svdata.hxx>
+#endif
+
+const unsigned long k32BitRedColorMask = 0x00ff0000;
+const unsigned long k32BitGreenColorMask = 0x0000ff00;
+const unsigned long k32BitBlueColorMask = 0x000000ff;
+
+QuartzSalBitmap::QuartzSalBitmap()
+ : mxCachedImage( nullptr )
+ , mnBits(0)
+ , mnWidth(0)
+ , mnHeight(0)
+ , mnBytesPerRow(0)
+{
+}
+
+QuartzSalBitmap::~QuartzSalBitmap()
+{
+ doDestroy();
+}
+
+bool QuartzSalBitmap::Create( const Size& rSize, vcl::PixelFormat ePixelFormat, const BitmapPalette& rBitmapPalette )
+{
+ if (ePixelFormat == vcl::PixelFormat::INVALID)
+ return false;
+
+ maPalette = rBitmapPalette;
+ mnBits = vcl::pixelFormatBitCount(ePixelFormat);
+ mnWidth = rSize.Width();
+ mnHeight = rSize.Height();
+ return AllocateUserData();
+}
+
+bool QuartzSalBitmap::Create( const SalBitmap& rSalBmp )
+{
+ vcl::PixelFormat ePixelFormat = vcl::bitDepthToPixelFormat(rSalBmp.GetBitCount());
+ return Create( rSalBmp, ePixelFormat);
+}
+
+bool QuartzSalBitmap::Create( const SalBitmap& rSalBmp, SalGraphics* pGraphics )
+{
+ vcl::PixelFormat ePixelFormat = vcl::PixelFormat::INVALID;
+ if (pGraphics)
+ ePixelFormat = vcl::bitDepthToPixelFormat(pGraphics->GetBitCount());
+ else
+ ePixelFormat = vcl::bitDepthToPixelFormat(rSalBmp.GetBitCount());
+
+ return Create( rSalBmp, ePixelFormat);
+}
+
+bool QuartzSalBitmap::Create( const SalBitmap& rSalBmp, vcl::PixelFormat eNewPixelFormat )
+{
+ const QuartzSalBitmap& rSourceBitmap = static_cast<const QuartzSalBitmap&>(rSalBmp);
+
+ if (eNewPixelFormat != vcl::PixelFormat::INVALID && rSourceBitmap.m_pUserBuffer)
+ {
+ mnBits = vcl::pixelFormatBitCount(eNewPixelFormat);
+ mnWidth = rSourceBitmap.mnWidth;
+ mnHeight = rSourceBitmap.mnHeight;
+ maPalette = rSourceBitmap.maPalette;
+
+ if( AllocateUserData() )
+ {
+ ConvertBitmapData( mnWidth, mnHeight, mnBits, mnBytesPerRow, maPalette,
+ m_pUserBuffer.get(), rSourceBitmap.mnBits,
+ rSourceBitmap.mnBytesPerRow, rSourceBitmap.maPalette,
+ rSourceBitmap.m_pUserBuffer.get() );
+ return true;
+ }
+ }
+ return false;
+}
+
+#if HAVE_FEATURE_SKIA
+
+bool QuartzSalBitmap::Create( const SkiaSalBitmap& rSalBmp, const SalTwoRect& rPosAry )
+{
+ bool bRet = false;
+
+ // Ugly but necessary to acquire the bitmap buffer because all of the
+ // SalBitmap instances that callers pass are already const. At least we
+ // only need to read, not write to the bitmap paramter.
+ SkiaSalBitmap& rSkiaSalBmp = const_cast<SkiaSalBitmap&>( rSalBmp );
+
+ BitmapBuffer *pSrcBuffer = rSkiaSalBmp.AcquireBuffer( BitmapAccessMode::Read );
+ if ( !pSrcBuffer )
+ return bRet;
+
+ if ( !pSrcBuffer->mpBits )
+ {
+ rSkiaSalBmp.ReleaseBuffer( pSrcBuffer, BitmapAccessMode::Read );
+ return bRet;
+ }
+
+ // Create only a 1 pixel buffer as it will always be discarded
+ mnBits = 32;
+ mnWidth = 1;
+ mnHeight = 1;
+ if( AllocateUserData() )
+ {
+ BitmapBuffer *pDestBuffer = AcquireBuffer( BitmapAccessMode::Read );
+ if ( pDestBuffer )
+ {
+ std::unique_ptr<BitmapBuffer> pConvertedBuffer = StretchAndConvert( *pSrcBuffer, rPosAry, pDestBuffer->mnFormat, pDestBuffer->maPalette, &pDestBuffer->maColorMask );
+ bool bUseDestBuffer = ( pConvertedBuffer &&
+ pConvertedBuffer->mpBits &&
+ pConvertedBuffer->mnFormat == pDestBuffer->mnFormat &&
+ pConvertedBuffer->mnWidth == rPosAry.mnDestWidth &&
+ pConvertedBuffer->mnHeight == rPosAry.mnDestHeight );
+
+ ReleaseBuffer( pDestBuffer, BitmapAccessMode::Read );
+
+ if ( bUseDestBuffer )
+ {
+ // Surprisingly, BitmapBuffer does not delete the bits so
+ // discard our 1 pixel buffer and take ownership of the bits
+ DestroyContext();
+ m_pUserBuffer.reset( pConvertedBuffer->mpBits );
+ mnWidth = pConvertedBuffer->mnWidth;
+ mnHeight = pConvertedBuffer->mnHeight;
+ mnBytesPerRow = pConvertedBuffer->mnScanlineSize;
+ bRet = true;
+ }
+ }
+ }
+
+ rSkiaSalBmp.ReleaseBuffer( pSrcBuffer, BitmapAccessMode::Read );
+
+ return bRet;
+}
+
+#endif
+
+bool QuartzSalBitmap::Create( const css::uno::Reference< css::rendering::XBitmapCanvas >& /*xBitmapCanvas*/,
+ Size& /*rSize*/, bool /*bMask*/ )
+{
+ return false;
+}
+
+void QuartzSalBitmap::Destroy()
+{
+ doDestroy();
+}
+
+void QuartzSalBitmap::doDestroy()
+{
+ DestroyContext();
+ m_pUserBuffer.reset();
+}
+
+void QuartzSalBitmap::DestroyContext()
+{
+ if( mxCachedImage )
+ {
+ CGImageRelease( mxCachedImage );
+ mxCachedImage = nullptr;
+ }
+
+ if (maGraphicContext.isSet())
+ {
+ CGContextRelease(maGraphicContext.get());
+ maGraphicContext.set(nullptr);
+ m_pContextBuffer.reset();
+ }
+}
+
+bool QuartzSalBitmap::CreateContext()
+{
+ DestroyContext();
+
+ // prepare graphics context
+ // convert image from user input if available
+ const bool bSkipConversion = !m_pUserBuffer;
+ if( bSkipConversion )
+ AllocateUserData();
+
+ // default to RGBA color space
+ CGColorSpaceRef aCGColorSpace = GetSalData()->mxRGBSpace;
+ CGBitmapInfo aCGBmpInfo = kCGImageAlphaNoneSkipFirst;
+
+ // convert data into something accepted by CGBitmapContextCreate()
+ size_t bitsPerComponent = 8;
+ sal_uInt32 nContextBytesPerRow = mnBytesPerRow;
+ if( mnBits == 32 )
+ {
+ // no conversion needed for truecolor
+ m_pContextBuffer = m_pUserBuffer;
+ }
+ else if( mnBits == 8 && maPalette.IsGreyPalette8Bit() )
+ {
+ // no conversion needed for grayscale
+ m_pContextBuffer = m_pUserBuffer;
+ aCGColorSpace = GetSalData()->mxGraySpace;
+ aCGBmpInfo = kCGImageAlphaNone;
+ bitsPerComponent = mnBits;
+ }
+ // TODO: is special handling for 1bit input buffers worth it?
+ else
+ {
+ // convert user data to 32 bit
+ nContextBytesPerRow = mnWidth << 2;
+ try
+ {
+ m_pContextBuffer = o3tl::make_shared_array<sal_uInt8>(mnHeight * nContextBytesPerRow);
+
+ if( !bSkipConversion )
+ {
+ ConvertBitmapData( mnWidth, mnHeight,
+ 32, nContextBytesPerRow, maPalette, m_pContextBuffer.get(),
+ mnBits, mnBytesPerRow, maPalette, m_pUserBuffer.get() );
+ }
+ }
+ catch( const std::bad_alloc& )
+ {
+ maGraphicContext.set(nullptr);
+ }
+ }
+
+ if (m_pContextBuffer)
+ {
+ maGraphicContext.set(CGBitmapContextCreate(m_pContextBuffer.get(), mnWidth, mnHeight,
+ bitsPerComponent, nContextBytesPerRow,
+ aCGColorSpace, aCGBmpInfo));
+ }
+
+ if (!maGraphicContext.isSet())
+ m_pContextBuffer.reset();
+
+ return maGraphicContext.isSet();
+}
+
+bool QuartzSalBitmap::AllocateUserData()
+{
+ Destroy();
+
+ if( mnWidth && mnHeight )
+ {
+ mnBytesPerRow = 0;
+
+ switch( mnBits )
+ {
+ case 1: mnBytesPerRow = (mnWidth + 7) >> 3; break;
+ case 4: mnBytesPerRow = (mnWidth + 1) >> 1; break;
+ case 8: mnBytesPerRow = mnWidth; break;
+ case 24: mnBytesPerRow = (mnWidth << 1) + mnWidth; break;
+ case 32: mnBytesPerRow = mnWidth << 2; break;
+ default:
+ assert(false && "vcl::QuartzSalBitmap::AllocateUserData(), illegal bitcount!");
+ }
+ }
+
+ bool alloc = false;
+ if (mnBytesPerRow != 0 &&
+ mnBytesPerRow <= std::numeric_limits<sal_uInt32>::max() / mnHeight)
+ {
+ try
+ {
+ m_pUserBuffer = o3tl::make_shared_array<sal_uInt8>(mnBytesPerRow * mnHeight);
+ alloc = true;
+ }
+ catch (std::bad_alloc &) {}
+ }
+ if (!alloc)
+ {
+ SAL_WARN( "vcl.quartz", "bad_alloc: " << mnWidth << "x" << mnHeight << " (" << mnBytesPerRow * mnHeight << " bytes)");
+ m_pUserBuffer.reset();
+ mnBytesPerRow = 0;
+ }
+
+ return bool(m_pUserBuffer);
+}
+
+void QuartzSalBitmap::ConvertBitmapData( sal_uInt32 nWidth, sal_uInt32 nHeight,
+ sal_uInt16 nDestBits, sal_uInt32 nDestBytesPerRow,
+ const BitmapPalette& rDestPalette, sal_uInt8* pDestData,
+ sal_uInt16 nSrcBits, sal_uInt32 nSrcBytesPerRow,
+ const BitmapPalette& rSrcPalette, sal_uInt8* pSrcData )
+
+{
+ if( (nDestBytesPerRow == nSrcBytesPerRow) &&
+ (nDestBits == nSrcBits) && ((nSrcBits != 8) || (rDestPalette.operator==( rSrcPalette ))) )
+ {
+ // simple case, same format, so just copy
+ memcpy( pDestData, pSrcData, nHeight * nDestBytesPerRow );
+ return;
+ }
+
+ // try accelerated conversion if possible
+ // TODO: are other truecolor conversions except BGR->ARGB worth it?
+ bool bConverted = false;
+ if( (nSrcBits == 24) && (nDestBits == 32) )
+ {
+ // TODO: extend bmpfast.cxx with a method that can be directly used here
+ BitmapBuffer aSrcBuf;
+ aSrcBuf.mnFormat = ScanlineFormat::N24BitTcBgr;
+ aSrcBuf.mpBits = pSrcData;
+ aSrcBuf.mnBitCount = nSrcBits;
+ aSrcBuf.mnScanlineSize = nSrcBytesPerRow;
+ BitmapBuffer aDstBuf;
+ aDstBuf.mnFormat = ScanlineFormat::N32BitTcArgb;
+ aDstBuf.mpBits = pDestData;
+ aDstBuf.mnBitCount = nDestBits;
+ aDstBuf.mnScanlineSize = nDestBytesPerRow;
+
+ aSrcBuf.mnWidth = aDstBuf.mnWidth = nWidth;
+ aSrcBuf.mnHeight = aDstBuf.mnHeight = nHeight;
+
+ SalTwoRect aTwoRects(0, 0, mnWidth, mnHeight, 0, 0, mnWidth, mnHeight);
+ bConverted = ::ImplFastBitmapConversion( aDstBuf, aSrcBuf, aTwoRects );
+ }
+
+ if( !bConverted )
+ {
+ // TODO: this implementation is for clarity, not for speed
+
+ auto pTarget = vcl::bitmap::getScanlineTransformer(nDestBits, rDestPalette);
+ auto pSource = vcl::bitmap::getScanlineTransformer(nSrcBits, rSrcPalette);
+
+ if (pTarget && pSource)
+ {
+ sal_uInt32 nY = nHeight;
+ while( nY-- )
+ {
+ pTarget->startLine(pDestData);
+ pSource->startLine(pSrcData);
+
+ sal_uInt32 nX = nWidth;
+ while( nX-- )
+ {
+ pTarget->writePixel(pSource->readPixel());
+ }
+ pSrcData += nSrcBytesPerRow;
+ pDestData += nDestBytesPerRow;
+ }
+ }
+ }
+}
+
+Size QuartzSalBitmap::GetSize() const
+{
+ return Size( mnWidth, mnHeight );
+}
+
+sal_uInt16 QuartzSalBitmap::GetBitCount() const
+{
+ return mnBits;
+}
+
+namespace {
+
+struct pal_entry
+{
+ sal_uInt8 mnRed;
+ sal_uInt8 mnGreen;
+ sal_uInt8 mnBlue;
+};
+
+}
+
+pal_entry const aImplSalSysPalEntryAry[ 16 ] =
+{
+{ 0, 0, 0 },
+{ 0, 0, 0x80 },
+{ 0, 0x80, 0 },
+{ 0, 0x80, 0x80 },
+{ 0x80, 0, 0 },
+{ 0x80, 0, 0x80 },
+{ 0x80, 0x80, 0 },
+{ 0x80, 0x80, 0x80 },
+{ 0xC0, 0xC0, 0xC0 },
+{ 0, 0, 0xFF },
+{ 0, 0xFF, 0 },
+{ 0, 0xFF, 0xFF },
+{ 0xFF, 0, 0 },
+{ 0xFF, 0, 0xFF },
+{ 0xFF, 0xFF, 0 },
+{ 0xFF, 0xFF, 0xFF }
+};
+
+static const BitmapPalette& GetDefaultPalette( int mnBits, bool bMonochrome )
+{
+ if( bMonochrome )
+ return Bitmap::GetGreyPalette( 1U << mnBits );
+
+ // at this point we should provide some kind of default palette
+ // since all other platforms do so, too.
+ static bool bDefPalInit = false;
+ static BitmapPalette aDefPalette256;
+ static BitmapPalette aDefPalette16;
+ static BitmapPalette aDefPalette2;
+ if( ! bDefPalInit )
+ {
+ bDefPalInit = true;
+ aDefPalette256.SetEntryCount( 256 );
+ aDefPalette16.SetEntryCount( 16 );
+ aDefPalette2.SetEntryCount( 2 );
+
+ // Standard colors
+ unsigned int i;
+ for( i = 0; i < 16; i++ )
+ {
+ aDefPalette16[i] =
+ aDefPalette256[i] = BitmapColor( aImplSalSysPalEntryAry[i].mnRed,
+ aImplSalSysPalEntryAry[i].mnGreen,
+ aImplSalSysPalEntryAry[i].mnBlue );
+ }
+
+ aDefPalette2[0] = BitmapColor( 0, 0, 0 );
+ aDefPalette2[1] = BitmapColor( 0xff, 0xff, 0xff );
+
+ // own palette (6/6/6)
+ const int DITHER_PAL_STEPS = 6;
+ const sal_uInt8 DITHER_PAL_DELTA = 51;
+ int nB, nG, nR;
+ sal_uInt8 nRed, nGreen, nBlue;
+ for( nB=0, nBlue=0; nB < DITHER_PAL_STEPS; nB++, nBlue += DITHER_PAL_DELTA )
+ {
+ for( nG=0, nGreen=0; nG < DITHER_PAL_STEPS; nG++, nGreen += DITHER_PAL_DELTA )
+ {
+ for( nR=0, nRed=0; nR < DITHER_PAL_STEPS; nR++, nRed += DITHER_PAL_DELTA )
+ {
+ aDefPalette256[ i ] = BitmapColor( nRed, nGreen, nBlue );
+ i++;
+ }
+ }
+ }
+ }
+
+ // now fill in appropriate palette
+ switch( mnBits )
+ {
+ case 1: return aDefPalette2;
+ case 4: return aDefPalette16;
+ case 8: return aDefPalette256;
+ default: break;
+ }
+
+ const static BitmapPalette aEmptyPalette;
+ return aEmptyPalette;
+}
+
+BitmapBuffer* QuartzSalBitmap::AcquireBuffer( BitmapAccessMode /*nMode*/ )
+{
+ // TODO: AllocateUserData();
+ if (!m_pUserBuffer)
+ return nullptr;
+
+ BitmapBuffer* pBuffer = new BitmapBuffer;
+ pBuffer->mnWidth = mnWidth;
+ pBuffer->mnHeight = mnHeight;
+ pBuffer->maPalette = maPalette;
+ pBuffer->mnScanlineSize = mnBytesPerRow;
+ pBuffer->mpBits = m_pUserBuffer.get();
+ pBuffer->mnBitCount = mnBits;
+ switch( mnBits )
+ {
+ case 1:
+ pBuffer->mnFormat = ScanlineFormat::N1BitMsbPal;
+ break;
+ case 8:
+ pBuffer->mnFormat = ScanlineFormat::N8BitPal;
+ break;
+ case 24:
+ pBuffer->mnFormat = ScanlineFormat::N24BitTcBgr;
+ break;
+ case 32:
+ {
+ pBuffer->mnFormat = ScanlineFormat::N32BitTcArgb;
+ ColorMaskElement aRedMask(k32BitRedColorMask);
+ aRedMask.CalcMaskShift();
+ ColorMaskElement aGreenMask(k32BitGreenColorMask);
+ aGreenMask.CalcMaskShift();
+ ColorMaskElement aBlueMask(k32BitBlueColorMask);
+ aBlueMask.CalcMaskShift();
+ pBuffer->maColorMask = ColorMask(aRedMask, aGreenMask, aBlueMask);
+ break;
+ }
+ default: assert(false);
+ }
+
+ // some BitmapBuffer users depend on a complete palette
+ if( (mnBits <= 8) && !maPalette )
+ pBuffer->maPalette = GetDefaultPalette( mnBits, true );
+
+ return pBuffer;
+}
+
+void QuartzSalBitmap::ReleaseBuffer( BitmapBuffer* pBuffer, BitmapAccessMode nMode )
+{
+ // invalidate graphic context if we have different data
+ if( nMode == BitmapAccessMode::Write )
+ {
+ maPalette = pBuffer->maPalette;
+ if (maGraphicContext.isSet())
+ {
+ DestroyContext();
+ }
+ InvalidateChecksum();
+ }
+
+ delete pBuffer;
+}
+
+CGImageRef QuartzSalBitmap::CreateCroppedImage( int nX, int nY, int nNewWidth, int nNewHeight ) const
+{
+ if( !mxCachedImage )
+ {
+ if (!maGraphicContext.isSet())
+ {
+ if( !const_cast<QuartzSalBitmap*>(this)->CreateContext() )
+ {
+ return nullptr;
+ }
+ }
+ mxCachedImage = CGBitmapContextCreateImage(maGraphicContext.get());
+ }
+
+ CGImageRef xCroppedImage = nullptr;
+ // short circuit if there is nothing to crop
+ if( !nX && !nY && (mnWidth == nNewWidth) && (mnHeight == nNewHeight) )
+ {
+ xCroppedImage = mxCachedImage;
+ CFRetain( xCroppedImage );
+ }
+ else
+ {
+ nY = mnHeight - (nY + nNewHeight); // adjust for y-mirrored context
+ const CGRect aCropRect = { { static_cast<CGFloat>(nX), static_cast<CGFloat>(nY) }, { static_cast<CGFloat>(nNewWidth), static_cast<CGFloat>(nNewHeight) } };
+ xCroppedImage = CGImageCreateWithImageInRect( mxCachedImage, aCropRect );
+ }
+
+ return xCroppedImage;
+}
+
+static void CFRTLFree(void* /*info*/, const void* data, size_t /*size*/)
+{
+ std::free( const_cast<void*>(data) );
+}
+
+CGImageRef QuartzSalBitmap::CreateWithMask( const QuartzSalBitmap& rMask,
+ int nX, int nY, int nWidth, int nHeight ) const
+{
+ CGImageRef xImage( CreateCroppedImage( nX, nY, nWidth, nHeight ) );
+ if( !xImage )
+ return nullptr;
+
+ CGImageRef xMask = rMask.CreateCroppedImage( nX, nY, nWidth, nHeight );
+ if( !xMask )
+ return xImage;
+
+ // CGImageCreateWithMask() only likes masks or greyscale images => convert if needed
+ // TODO: isolate in an extra method?
+ if( !CGImageIsMask(xMask) || rMask.GetBitCount() != 8)//(CGImageGetColorSpace(xMask) != GetSalData()->mxGraySpace) )
+ {
+ const CGRect xImageRect=CGRectMake( 0, 0, nWidth, nHeight );//the rect has no offset
+
+ // create the alpha mask image fitting our image
+ // TODO: is caching the full mask or the subimage mask worth it?
+ int nMaskBytesPerRow = ((nWidth + 3) & ~3);
+ void* pMaskMem = std::malloc( nMaskBytesPerRow * nHeight );
+ CGContextRef xMaskContext = CGBitmapContextCreate( pMaskMem,
+ nWidth, nHeight, 8, nMaskBytesPerRow, GetSalData()->mxGraySpace, kCGImageAlphaNone );
+ CGContextDrawImage( xMaskContext, xImageRect, xMask );
+ CFRelease( xMask );
+ CGDataProviderRef xDataProvider( CGDataProviderCreateWithData( nullptr,
+ pMaskMem, nHeight * nMaskBytesPerRow, &CFRTLFree ) );
+
+ static const CGFloat* pDecode = nullptr;
+ xMask = CGImageMaskCreate( nWidth, nHeight, 8, 8, nMaskBytesPerRow, xDataProvider, pDecode, false );
+ CFRelease( xDataProvider );
+ CFRelease( xMaskContext );
+ }
+
+ if( !xMask )
+ return xImage;
+
+ // combine image and alpha mask
+ CGImageRef xMaskedImage = CGImageCreateWithMask( xImage, xMask );
+ CFRelease( xMask );
+ CFRelease( xImage );
+ return xMaskedImage;
+}
+
+/** creates an image from the given rectangle, replacing all black pixels
+ with nMaskColor and make all other full transparent */
+CGImageRef QuartzSalBitmap::CreateColorMask( int nX, int nY, int nWidth,
+ int nHeight, Color nMaskColor ) const
+{
+ CGImageRef xMask = nullptr;
+ if (m_pUserBuffer && (nX + nWidth <= mnWidth) && (nY + nHeight <= mnHeight))
+ {
+ const sal_uInt32 nDestBytesPerRow = nWidth << 2;
+ std::unique_ptr<sal_uInt32[]> pMaskBuffer(new (std::nothrow) sal_uInt32[ nHeight * nDestBytesPerRow / 4] );
+ sal_uInt32* pDest = pMaskBuffer.get();
+
+ auto pSourcePixels = vcl::bitmap::getScanlineTransformer(mnBits, maPalette);
+
+ if( pMaskBuffer && pSourcePixels )
+ {
+ sal_uInt32 nColor;
+ reinterpret_cast<sal_uInt8*>(&nColor)[0] = 0xff;
+ reinterpret_cast<sal_uInt8*>(&nColor)[1] = nMaskColor.GetRed();
+ reinterpret_cast<sal_uInt8*>(&nColor)[2] = nMaskColor.GetGreen();
+ reinterpret_cast<sal_uInt8*>(&nColor)[3] = nMaskColor.GetBlue();
+
+ sal_uInt8* pSource = m_pUserBuffer.get();
+ // First to nY on y-axis, as that is our starting point (sub-image)
+ if( nY )
+ pSource += nY * mnBytesPerRow;
+
+ int y = nHeight;
+ while( y-- )
+ {
+ pSourcePixels->startLine( pSource );
+ pSourcePixels->skipPixel(nX); // Skip on x axis to nX
+ sal_uInt32 x = nWidth;
+ while( x-- )
+ {
+ *pDest++ = (pSourcePixels->readPixel() == 0) ? nColor : 0;
+ }
+ pSource += mnBytesPerRow;
+ }
+
+ CGDataProviderRef xDataProvider( CGDataProviderCreateWithData(nullptr, pMaskBuffer.release(), nHeight * nDestBytesPerRow, &CFRTLFree) );
+ xMask = CGImageCreate(nWidth, nHeight, 8, 32, nDestBytesPerRow, GetSalData()->mxRGBSpace, kCGImageAlphaPremultipliedFirst, xDataProvider, nullptr, true, kCGRenderingIntentDefault);
+ CFRelease(xDataProvider);
+ }
+ }
+ return xMask;
+}
+
+/** QuartzSalBitmap::GetSystemData Get platform native image data from existing image
+ *
+ * @param rData struct BitmapSystemData, defined in vcl/inc/bitmap.hxx
+ * @return true if successful
+**/
+bool QuartzSalBitmap::GetSystemData( BitmapSystemData& rData )
+{
+ bool bRet = false;
+
+ if (!maGraphicContext.isSet())
+ CreateContext();
+
+ if (maGraphicContext.isSet())
+ {
+ bRet = true;
+
+ if ((CGBitmapContextGetBitsPerPixel(maGraphicContext.get()) == 32) &&
+ (CGBitmapContextGetBitmapInfo(maGraphicContext.get()) & kCGBitmapByteOrderMask) != kCGBitmapByteOrder32Host)
+ {
+ /**
+ * We need to hack things because VCL does not use kCGBitmapByteOrder32Host, while Cairo requires it.
+ *
+ * Not sure what the above comment means. We don't use Cairo on macOS or iOS.
+ *
+ * This whole if statement was originally (before 2011) inside #ifdef CAIRO. Did we use Cairo on Mac back then?
+ * Anyway, nowadays (since many years, I think) we don't, so should this if statement be dropped? Fun.
+ */
+
+ CGImageRef xImage = CGBitmapContextCreateImage(maGraphicContext.get());
+
+ // re-create the context with single change: include kCGBitmapByteOrder32Host flag.
+ CGContextHolder aGraphicContextNew(CGBitmapContextCreate(CGBitmapContextGetData(maGraphicContext.get()),
+ CGBitmapContextGetWidth(maGraphicContext.get()),
+ CGBitmapContextGetHeight(maGraphicContext.get()),
+ CGBitmapContextGetBitsPerComponent(maGraphicContext.get()),
+ CGBitmapContextGetBytesPerRow(maGraphicContext.get()),
+ CGBitmapContextGetColorSpace(maGraphicContext.get()),
+ CGBitmapContextGetBitmapInfo(maGraphicContext.get()) | kCGBitmapByteOrder32Host));
+ CFRelease(maGraphicContext.get());
+
+ // Needs to be flipped
+ aGraphicContextNew.saveState();
+ CGContextTranslateCTM (aGraphicContextNew.get(), 0, CGBitmapContextGetHeight(aGraphicContextNew.get()));
+ CGContextScaleCTM (aGraphicContextNew.get(), 1.0, -1.0);
+
+ CGContextDrawImage(aGraphicContextNew.get(), CGRectMake( 0, 0, CGImageGetWidth(xImage), CGImageGetHeight(xImage)), xImage);
+
+ // Flip back
+ CGContextRestoreGState( aGraphicContextNew.get() );
+ CGImageRelease( xImage );
+ maGraphicContext = aGraphicContextNew;
+ }
+
+ rData.mnWidth = mnWidth;
+ rData.mnHeight = mnHeight;
+ }
+
+ return bRet;
+}
+
+bool QuartzSalBitmap::ScalingSupported() const
+{
+ return false;
+}
+
+bool QuartzSalBitmap::Scale( const double& /*rScaleX*/, const double& /*rScaleY*/, BmpScaleFlag /*nScaleFlag*/ )
+{
+ return false;
+}
+
+bool QuartzSalBitmap::Replace( const Color& /*rSearchColor*/, const Color& /*rReplaceColor*/, sal_uInt8 /*nTol*/ )
+{
+ return false;
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */