Xref: utzoo comp.sys.mac.hypercard:6705 comp.sys.mac.system:5813
Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!usc!apple!apple.com!rmh
From: rmh@apple.com (Rick Holzgrafe)
Newsgroups: comp.sys.mac.hypercard,comp.sys.mac.system
Subject: Re: HC 2.0 & TrueType: SLOW?
Message-ID: <13572@goofy.Apple.COM>
Date: 20 May 91 23:22:16 GMT
References: <1991May19.202407.10132@midway.uchicago.edu>
Sender: usenet@Apple.COM
Organization: Apple Computer, Inc.
Lines: 40

In article <1991May19.202407.10132@midway.uchicago.edu> 
tisu@quads.uchicago.edu (Seth Tisue) writes:
> Each card had some 36 pt Courier, some 24
> pt Helvetica, some 14 pt Helvetica Bold, and some 14 pt Times.

Hm - I'm no expert, but I'm not too surprised if it slowed down a bit 
under TrueType. To display TT fonts, the system must interpret ("render") 
the TT to create a proper-size bitmap font, which it holds in temporary 
memory (the "cache"). Once rendered, so long as that bitmap stays in the 
cache, further printing in that font, size, and style should be quick. But 
bigger point sizes take up more room in the cache. And each of your cards 
has four different fonts, two in large sizes; I bet the cache simply can't 
hold it all, and the bitmaps therefore can't be remembered from one card 
to the next. So on each card, the bitmaps are being rendered all over 
again!

And before you ask - I have no idea how to increase the font cache size, 
if that's even possible. (Anybody out there know?)

> is it possible to use the TrueType version
> of a font simultaneously with some of its bitmaps?  i.e., can one install
> the Times TT font, and then install a 14 point Times bitmap, so whenever
> you need that font in that size, you can bypass TrueType for extra 
speed?  If
> so, how careful to you need to be about font ID's and so forth -- does it
> just work, or does it take some tinkering with?

Yes, you can, and yes, it just works. :-)

The System will use the correct-size bitmap font if it is available; else 
it will use a TrueType font appropriately scaled.

Hope this helps.

==========================================================================
Rick Holzgrafe              |    {sun,voder,nsc,mtxinu,dual}!apple!rmh
Software Engineer           | AppleLink HOLZGRAFE1          rmh@apple.com
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