I've been working on printing in my app and I have encountered a
few problems. First I'm finding an extreme slowness when printing
(via Print dialog -> Preview button) any space, tab or U+2588 (FULL
BLOCK) characters in the AppleSymbols font. Every page that
contains these glyphs prints slowly. In my tests on each full page
of styled text (plus some small graphics) there are an average of
20 occurrences of these glyphs. If I change the font to Arial or
the characters to Xs, for instance, printing is 10 x as fast (but,
of course, it doesn't look right).
I'm calling ATSUDrawText and using the CGContextRef returned by
PMSessionGetGraphicsContext(...
kPMGraphicsContextCoreGraphics ...). However, I don't think that
this is a problem with my code FLW. (Famous Last Words)
....
This looks closely related to something I've encountered, too. I
filed a bug against this in January 2005 (#3966046, title
"ATSUDrawText rendering to PDF context is inefficient"), but Radar
still shows the status as "open", and nothing seems to have changed.
This isn't really a Carbon issue; it's inefficiency in the font
embedding code used by CoreGraphics when rendering to PDF.
You can even demonstrate the issue with something as simple as
TextEdit: create a document using AppleSymbols, and see how long it
takes to bring up a PDF preview (via the Print dialog); then change
the font to Arial, and see how much faster it appears.
I guess a fresh Radar bug report won't hurt.
JK
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