Re: Image cache: Where is it and how do I refresh it?
Re: Image cache: Where is it and how do I refresh it?
- Subject: Re: Image cache: Where is it and how do I refresh it?
- From: Gregory Weston <email@hidden>
- Date: Tue, 30 May 2006 03:25:34 -0400
On May 30, 2006, at 2:55 AM, John C. Randolph wrote:
On May 27, 2006, at 7:51 AM, Gregory Weston wrote:
If I remove the imagerep from the image and add a new one created
from the same buffer it works.
NSImage has no way to know the you've changed the contents of any
of its image reps. Once it's generated a cached image for a given
resolution, it will hang onto it.
I think (and I'm not being facetious or snide) that may be what I was
asking about. There's not any explicit way to signal to the view that
any cached data is likely to be invalid? I'll reiterate what I found
to be the most confusing aspect of this: If I asked the NSImage for
it's TIFF representation I got the right thing. If I told it to draw
itself - even after getting the expected TIFF - I got stale data.
It shouldn't be necessary to create a new instance, though.
Removing the rep and then re-adding it should suffice.
Actually, I tried that with no joy.
Is your view subclass actually an NSImageView subclass? If so,
it's making its own cached image, too.
Nope. Just a straight NSView.
G
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