tdf#142061 Add window scaling to XOR emulation on macOS

Window scaling for retina displays on macOS has been added to fix
tdf#138122 in commit 1a167625314bf36b735176ed488e6ba9b5e9b675

Missing window scaling for XOR emulation is added by this change.
Code modified for macOS is moved from quartz/salgidcommon.cxx to
osx/salmacos.cxx while original code is copied to ios/salios.cxx
to prevent modifications for iOS.

Change-Id: Ia8c52f9045379cc37d5aff1279650db0dddee8c0
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/115816
Tested-by: Adolfo Jayme Barrientos <fitojb@ubuntu.com>
Reviewed-by: Adolfo Jayme Barrientos <fitojb@ubuntu.com>

1 files changed, 0 insertions, 147 deletions

diff --git a/vcl/quartz/salgdicommon.cxx b/vcl/quartz/salgdicommon.cxx
index fec61453367d..4061aefb4a40 100644
--- a/vcl/quartz/salgdicommon.cxx
+++ b/vcl/quartz/salgdicommon.cxx
@@ -284,151 +284,4 @@ XorEmulation::~XorEmulation()
     SetTarget( 0, 0, 0, nullptr, nullptr );
 }
 
-void XorEmulation::SetTarget( int nWidth, int nHeight, int nTargetDepth,
-                              CGContextRef xTargetContext, CGLayerRef xTargetLayer )
-{
-    SAL_INFO( "vcl.quartz", "XorEmulation::SetTarget() this=" << this <<
-              " (" << nWidth << "x" << nHeight << ") depth=" << nTargetDepth <<
-              " context=" << xTargetContext << " layer=" << xTargetLayer );
-
-    // prepare to replace old mask+temp context
-    if( m_xMaskContext )
-    {
-        // cleanup the mask context
-        CGContextRelease( m_xMaskContext );
-        delete[] m_pMaskBuffer;
-        m_xMaskContext = nullptr;
-        m_pMaskBuffer = nullptr;
-
-        // cleanup the temp context if needed
-        if( m_xTempContext )
-        {
-            CGContextRelease( m_xTempContext );
-            delete[] m_pTempBuffer;
-            m_xTempContext = nullptr;
-            m_pTempBuffer = nullptr;
-        }
-    }
-
-    // return early if there is nothing more to do
-    if( !xTargetContext )
-    {
-        return;
-    }
-    // retarget drawing operations to the XOR mask
-    m_xTargetLayer = xTargetLayer;
-    m_xTargetContext = xTargetContext;
-
-    // prepare creation of matching CGBitmaps
-    CGColorSpaceRef aCGColorSpace = GetSalData()->mxRGBSpace;
-    CGBitmapInfo aCGBmpInfo = kCGImageAlphaNoneSkipFirst;
-    int nBitDepth = nTargetDepth;
-    if( !nBitDepth )
-    {
-        nBitDepth = 32;
-    }
-    int nBytesPerRow = 4;
-    const size_t nBitsPerComponent = (nBitDepth == 16) ? 5 : 8;
-    if( nBitDepth <= 8 )
-    {
-        aCGColorSpace = GetSalData()->mxGraySpace;
-        aCGBmpInfo = kCGImageAlphaNone;
-        nBytesPerRow = 1;
-    }
-    nBytesPerRow *= nWidth;
-    m_nBufferLongs = (nHeight * nBytesPerRow + sizeof(sal_uLong)-1) / sizeof(sal_uLong);
-
-    // create a XorMask context
-    m_pMaskBuffer = new sal_uLong[ m_nBufferLongs ];
-    m_xMaskContext = CGBitmapContextCreate( m_pMaskBuffer,
-                                            nWidth, nHeight,
-                                            nBitsPerComponent, nBytesPerRow,
-                                            aCGColorSpace, aCGBmpInfo );
-    SAL_WARN_IF( !m_xMaskContext, "vcl.quartz", "mask context creation failed" );
-
-    // reset the XOR mask to black
-    memset( m_pMaskBuffer, 0, m_nBufferLongs * sizeof(sal_uLong) );
-
-    // a bitmap context will be needed for manual XORing
-    // create one unless the target context is a bitmap context
-    if( nTargetDepth )
-    {
-        m_pTempBuffer = static_cast<sal_uLong*>(CGBitmapContextGetData( m_xTargetContext ));
-    }
-    if( !m_pTempBuffer )
-    {
-        // create a bitmap context matching to the target context
-        m_pTempBuffer = new sal_uLong[ m_nBufferLongs ];
-        m_xTempContext = CGBitmapContextCreate( m_pTempBuffer,
-                                                nWidth, nHeight,
-                                                nBitsPerComponent, nBytesPerRow,
-                                                aCGColorSpace, aCGBmpInfo );
-        SAL_WARN_IF( !m_xTempContext, "vcl.quartz", "temp context creation failed" );
-    }
-
-    // initialize XOR mask context for drawing
-    CGContextSetFillColorSpace( m_xMaskContext, aCGColorSpace );
-    CGContextSetStrokeColorSpace( m_xMaskContext, aCGColorSpace );
-    CGContextSetShouldAntialias( m_xMaskContext, false );
-
-    // improve the XorMask's XOR emulation a little
-    // NOTE: currently only enabled for monochrome contexts
-    if( aCGColorSpace == GetSalData()->mxGraySpace )
-    {
-        CGContextSetBlendMode( m_xMaskContext, kCGBlendModeDifference );
-    }
-    // initialize the transformation matrix to the drawing target
-    const CGAffineTransform aCTM = CGContextGetCTM( xTargetContext );
-    CGContextConcatCTM( m_xMaskContext, aCTM );
-    if( m_xTempContext )
-    {
-        CGContextConcatCTM( m_xTempContext, aCTM );
-    }
-    // initialize the default XorMask graphics state
-    CGContextSaveGState( m_xMaskContext );
-}
-
-bool XorEmulation::UpdateTarget()
-{
-    SAL_INFO( "vcl.quartz", "XorEmulation::UpdateTarget() this=" << this );
-
-    if( !IsEnabled() )
-    {
-        return false;
-    }
-    // update the temp bitmap buffer if needed
-    if( m_xTempContext )
-    {
-        SAL_WARN_IF( m_xTargetContext == nullptr, "vcl.quartz", "Target layer is NULL");
-        CGContextDrawLayerAtPoint( m_xTempContext, CGPointZero, m_xTargetLayer );
-    }
-    // do a manual XOR with the XorMask
-    // this approach suffices for simple color manipulations
-    // and also the complex-clipping-XOR-trick used in metafiles
-    const sal_uLong* pSrc = m_pMaskBuffer;
-    sal_uLong* pDst = m_pTempBuffer;
-    for( int i = m_nBufferLongs; --i >= 0;)
-    {
-        *(pDst++) ^= *(pSrc++);
-    }
-    // write back the XOR results to the target context
-    if( m_xTempContext )
-    {
-        CGImageRef xXorImage = CGBitmapContextCreateImage( m_xTempContext );
-        const int nWidth  = static_cast<int>(CGImageGetWidth( xXorImage ));
-        const int nHeight = static_cast<int>(CGImageGetHeight( xXorImage ));
-        // TODO: update minimal changerect
-        const CGRect aFullRect = CGRectMake(0, 0, nWidth, nHeight);
-        CGContextDrawImage( m_xTargetContext, aFullRect, xXorImage );
-        CGImageRelease( xXorImage );
-    }
-
-    // reset the XorMask to black again
-    // TODO: not needed for last update
-    memset( m_pMaskBuffer, 0, m_nBufferLongs * sizeof(sal_uLong) );
-
-    // TODO: return FALSE if target was not changed
-    return true;
-}
-
 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */