Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!wuarchive!zaphod.mps.ohio-state.edu!mips!decwrl!ucbvax!unisoft!hoptoad!farcomp!murat
From: murat@farcomp.UUCP (Murat Konar)
Newsgroups: comp.sys.mac.system
Subject: Re: Window drop shadow trivium
Message-ID: <236@farcomp.UUCP>
Date: 8 Sep 90 02:15:53 GMT
References: <1444.26e3ecdf@waikato.ac.nz> <1990Sep4.232909.9756@momenta>
Reply-To: murat@farcomp.UUCP (Murat Konar)
Organization: Farallon Computing Inc. Berkeley, CA
Lines: 27

In article <1990Sep4.232909.9756@momenta> tecot@momenta (Ed Tecot) writes:
>ccc_ldo@waikato.ac.nz (Lawrence D'Oliveiro, Waikato University) writes:
>>I hadn't noticed this until someone pointed it out to me, but there's
>>an interesting little fudge with the drop shadows on the standard document
>>windows on machines with the 256K colour ROM (Mac II, IIx, IIcx and SE/30).
>>...
>>I was told that this was done to avoid a complicated-shaped window
>>structure region, which would have slowed down window updates.
>
>That's right, it was painfully slow without it.

I wrote a WDEF replacement INIT that has the proper shadows and noticed
no speed differential on my Mac II with or without 32 bit Quickdraw.
I donUt think it was the introduction of 32 bit Quickdraw that changed Apple's
mind about window shadows but the incorporation of Andy Hertzfeld's 
QuickerGraph code into the standard system release back in late T87 (I think).
This little marvel does significantly speed up Quickdraw operations.  

Please note that QuickerGraph code has already been included in the standard 
system releases from Apple since System 5.  


-- 
____________________________________________________________________
Have a day. :^|             
Murat N. Konar	
murat@farcomp.UUCP             -or-          farcomp!murat@apple.com