- // If we are printing, source colours are screen colours
- // not printer colours and so we need copy the bitmap
- // pixel by pixel.
+ HDC dc_src = (HDC) source->m_hDC;
+ RECT rect;
+ for (int y = 0; y < height; y++)
+ {
+ // This is Stefan Csomor's optimisation, where
+ // identical adjacent pixels are drawn together.
+ // We still need a faster way of drawing bitmaps,
+ // perhaps converting to a DIB first and using SetDIBitsToDevice.
+ for (int x = 0; x < width; x++)
+ {
+ COLORREF col = ::GetPixel(dc_src, x, y) ;
+ HBRUSH brush = ::CreateSolidBrush( col );
+
+ rect.left = xdest1 + x;
+ rect.top = ydest1 + y;
+ while( (x + 1 < width) && (::GetPixel(dc_src, x + 1, y) == col ) )
+ {
+ ++x ;
+ }
+ rect.right = xdest1 + x + 1;
+ rect.bottom = rect.top + 1;
+ ::FillRect((HDC) m_hDC, &rect, brush);
+ ::DeleteObject(brush);
+ }
+ }
+/*