On 13/03/2009, at 3:00 AM, Benjamin Stiglitz wrote:
I've noticed I'm getting different results with NSGradient when
drawing
to screen and when drawing in a PDF context, e.g. printing, or
write PDF
to clipboard. If the gradient contains colours with transparency, it
draws correctly on-screen (allowing what's drawn behind to come
through),
but draws opaquely in PDF.
PDF doesn’t support alpha in gradient colors. You’ll need to render
out
to a bitmap and then draw that instead. For best results you want a
high
resolution image that is dithered to prevent banding that the PDF
rendering engine might otherwise do on its own.
-Ben
Wow. That sucks... is that likely to be changed any time soon? This
"workaround" is pretty hardcore.
--Graham
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