tdf#104693: screenshot: fix mirrored mac screenshots

Change-Id: Ie13689d7e15bf8dee6f21e6f5e7d75c9e53e931b
Reviewed-on: https://gerrit.libreoffice.org/32543Reviewed-by: Thorsten Behrens <Thorsten.Behrens@CIB.de>
Tested-by: Thorsten Behrens <Thorsten.Behrens@CIB.de>

vcl/inc/quartz/salbmp.h

@@ -88,7 +88,7 @@ private:
                                        sal_uInt16 nSrcBits, sal_uInt32 nSrcBytesPerRow, const BitmapPalette& rSrcPalette, sal_uInt8* pSrcData );
 
 public:
-    bool            Create( CGLayerRef xLayer, int nBitCount, int nX, int nY, int nWidth, int nHeight );
+    bool            Create( CGLayerRef xLayer, int nBitCount, int nX, int nY, int nWidth, int nHeight, bool bFlipped );
 
 public:
     CGImageRef      CreateWithMask( const QuartzSalBitmap& rMask, int nX, int nY, int nWidth, int nHeight ) const;

vcl/quartz/salbmp.cxx

@@ -107,7 +107,7 @@ QuartzSalBitmap::~QuartzSalBitmap()
 }
 
 bool QuartzSalBitmap::Create( CGLayerRef xLayer, int nBitmapBits,
-    int nX, int nY, int nWidth, int nHeight )
+    int nX, int nY, int nWidth, int nHeight, bool bFlipped )
 {
     SAL_WARN_IF( !xLayer, "vcl", "QuartzSalBitmap::Create() from non-layered context" );
 
@@ -146,6 +146,14 @@ bool QuartzSalBitmap::Create( CGLayerRef xLayer, int nBitmapBits,
     if(mxGraphicContext) // remove warning
     {
         SAL_INFO("vcl.cg", "CGContextDrawLayerAtPoint(" << mxGraphicContext << "," << aSrcPoint << "," << xLayer << ")" );
+        if( bFlipped )
+        {
+            SAL_INFO( "vcl.cg", "CGContextTranslateCTM(" << mxGraphicContext << ",0," << mnHeight << ")" );
+            CGContextTranslateCTM( mxGraphicContext, 0, +mnHeight );
+            SAL_INFO( "vcl.cg", "CGContextScaleCTM(" << mxGraphicContext << ",+1,-1)" );
+            CGContextScaleCTM( mxGraphicContext, +1, -1 );
+        }
+
         CGContextDrawLayerAtPoint( mxGraphicContext, aSrcPoint, xLayer );
     }
     return true;

vcl/quartz/salgdicommon.cxx

@@ -1448,7 +1448,7 @@ SalBitmap* AquaSalGraphics::getBitmap( long  nX, long  nY, long  nDX, long  nDY
     ApplyXorContext();
 
     QuartzSalBitmap* pBitmap = new QuartzSalBitmap;
-    if( !pBitmap->Create( mxLayer, mnBitmapDepth, nX, nY, nDX, nDY) )
+    if( !pBitmap->Create( mxLayer, mnBitmapDepth, nX, nY, nDX, nDY, IsFlipped()) )
     {
         delete pBitmap;
         pBitmap = nullptr;