Hi Ken, The -colorSpaceName method on NSImageRep returns only a best-effort approximation. This method, like many of the methods of NSImageRep, is used by NSImage to decide which NSImageRep is the best choice for drawing to a given destination. The design is easiest to comprehend from that point of view. If an image rep doesn't have a 'home' colorspace, calibrated RGB is the default.
EPS on Mac OS X is handled by converting the data to PDF. The interface NSEPSImageRep uses is documented here: <http://developer.apple.com/documentation/GraphicsImaging/Reference/CGPSConverter/Reference/reference.html>. I'm not familiar with the EPS format (since we just convert it to PDF), but a PDF doesn't have any one colorspace. Different embedded bitmaps may have different colorspaces. We do not look through the included bitmaps for a most popular colorspace or anything like that. This is more of an explanation than a workaround. You can and should file a bug, but even if you can define exactly what you want to have happen, you'll have to go it alone for now. -Ken Cocoa Frameworks On Sun, Dec 21, 2008 at 10:04 PM, Ken Tozier <kentoz...@comcast.net> wrote: > Hi > > If you open an eps image in a text editor like BBEdit, you can see clearly > what color space it was saved as but when you create an NSImage from the > file and call [image representations] or [image bestRepresentationForDevice: > <printer device dict here>] all you get are images with > "NSCalibratedRGBColorSpace." Most of our images are saved as cmyk so why is > NSImage ignoring that info and replacing it with rgb? Is there any way to > load eps's differently so that their saved color spaces are preserved? I > could write a little hack to read the eps header directly and extract the > info, but I'd like to avoid that if there is a way to do it with NSImage. > > Reason I ask is that I wrote a file cataloging application and one critical > piece of info is the color space, so users will know, at a glance, whether > an image they are about to import into a print document needs to be > converted to cmyk. > > Thanks for any help > > _______________________________________________ > > Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) > > Please do not post admin requests or moderator comments to the list. > Contact the moderators at cocoa-dev-admins(at)lists.apple.com > > Help/Unsubscribe/Update your Subscription: > http://lists.apple.com/mailman/options/cocoa-dev/kenferry%40gmail.com > > This email sent to kenfe...@gmail.com > _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
