Jaguar NSImage caching woes roundup
Jaguar NSImage caching woes roundup
- Subject: Jaguar NSImage caching woes roundup
- From: Alexander Griekspoor <email@hidden>
- Date: Tue, 10 Feb 2004 23:51:25 +0100
Hi!
The second question I had: I know this has been discussed a lot in the
past and I did read all the posts I could find, but I miss a kind of
summary or at least a satisfaction to understand the problem fully. My
app uses the wonderful graphview framework to draw a -tata- graph. To
speed up things up, I draw it in an NSImage to use it as a cache that I
composite in the end to my view. It works perfectly, but then I started
to get report from people running Jaguar that had problems opening
certain files. To cut the story short, it turns out to be the famous
caching problem, if the view gets to wide, NSImage can't cache it
anymore. The thread that offers most answers is:
http://cocoa.mamasam.com/COCOADEV/2003/03/2/59361.php
The problem is that in none of these posts a real workaround is given.
What would be the best way to deal with the problem, and again maybe
it's the lack of understanding the background of it.
The cachedimagerep is actually a window right? And the size of it is
limited. Someone suggested to use an NSBitmapRep. Can those be of any
size then? And should I in that case disable the caching, or is that
still necessary to actually draw the thing offscreen? Or is the only
option to tile everything?
Judged from the posts, many must have came up with a solution. Is
anyone willing to share some snippets demonstrating how to cache large
views?
All help is really appreciated!
Many thanks in advance,
Alex
*********************************************************
** Alexander Griekspoor **
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The Netherlands Cancer Institute
Department of Tumorbiology (H4)
Plesmanlaan 121, 1066 CX, Amsterdam
Tel: + 31 20 - 512 2023
Fax: + 31 20 - 512 2029
E-mail: email@hidden
Web:
http://www.mekentosj.com
Claiming that the Macintosh is inferior to Windows
because most people use Windows, is like saying
that all other restaurants serve food that is
inferior to McDonalds
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