Re: cocoa-dev digest, Vol 2 #665 - 14 msgs
Re: cocoa-dev digest, Vol 2 #665 - 14 msgs
- Subject: Re: cocoa-dev digest, Vol 2 #665 - 14 msgs
- From: Kirk Kerekes <email@hidden>
- Date: Mon, 20 May 2002 19:11:50 -0500
From: "Erik M. Buck" <email@hidden>
[much ado about Quartz vs DPS snipped]
- Adobe Acrobat is much faster at rendering arbitrary PDF than Preview. I
can only guess why :(
Actually, I find that on the same box, the performance is roughly
comparable -- and Preview will correctly display every PDF that I have
thrown at it, while Acrobat Reader will not.
The perceived speed difference has more to do with rendering mechanics --
Adobe renders in front of you, while Preview uses the standard offscreen
buffer scheme, and so delivers only the completely rendered page.
It is comparatively trivial to generate PDFs that Acrobat chokes on, and
Preview renders perfectly -- just use AppleWorks to create a page with half
a dozen or so good-sized shape-gradient fills on it, underneath text and
other feature-laden graphic objects, thus generating rather complicated
clipping requirements. "Print" the resulting document to PDF, and then
view it on Acrobat and Preview. Preview invariably renders the image
correctly, Acrobat will start quietly dropping image elements as the
complexity goes up -- and without notice, too.
That said, I do hope that Apple restores EPS rasterizing (or at least
automagic eps->pdf conversion) to OSX -- I wouldn't wish attempting to
install GhostScript on anyone but a devoted Unix fan, FINK or no FINK.
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