Re: determining format of NSImageRep
Re: determining format of NSImageRep
- Subject: Re: determining format of NSImageRep
- From: "Mark J. Lilback" <email@hidden>
- Date: Tue, 25 Mar 2003 09:16:03 -0500
On Monday, March 24, 2003, at 04:17 PM, Mark J. Lilback wrote:
Well, what you're actually asking for here is to know what the
image file *was*, before it was interpreted by one of the imageRep
classes' -initWith... routines. An NSBitmapImageRep doesn't know
whether the pixels it contains came from a .jpeg, a .gif or anything
else.
Since I'm passing NSImage an NSData with image data, something in
Cocoa knows what the image came from, I was just hoping there was a
way to find out. For example, if a user drag and drops a jpg on an
NSImageView, how I can find out it was a jpg they dropped? The only
way I can see to do that is to subclass and look at the drag
pasteboard myself.
I decided to go ahead and sniff for known image types and those are
the only ones I'm handling. Then I'm looking for compression factors
from loaded images so I can use them when saving.
--
__________________________________________________________________________
"They that can give up essential liberty
Mark J. Lilback to obtain a little temporary safety
<email@hidden> deserve neither liberty or safety."
http://www.lilback.com/ -- Benjamin Franklin
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