Re: bitmapImageRepByConvertingToColorSpace on the fly
Re: bitmapImageRepByConvertingToColorSpace on the fly
- Subject: Re: bitmapImageRepByConvertingToColorSpace on the fly
- From: Kyle Sluder <email@hidden>
- Date: Wed, 12 Mar 2014 15:36:22 -0700
On Wed, Mar 12, 2014, at 02:13 PM, Leonardo wrote:
> Hi, I properly draw an imageRep within a NSView using
>
> [rep drawInRect:inRect fromRect:fromRect operation:NSCompositeSourceOver
> fraction:1.0 respectFlipped:YES hints:nil];
>
> Now I would like to simulate the result of adopting a given ICC color
> profile. So, if for instance I choose a gray profile I see all the images
> grayed out. I have been successfully using
>
> bitmapImageRepByConvertingToColorSpace:
>
> and I get the right result. When I change the profile I rebuild my
> representation, the I always use that.
> Anyway, when I have several images on the page, it takes a long long
> time.
> So, I would like to know whether there is a way to get the same result
> just
> modifying the profile on the NSView's context, e.g. in the NSView's
> drawRect: method or applying a CIFilter, if that will not slow down the
> rendering speed. Any way?
You could try creating an overlay window and setting its color space to
your target color space using -setColorSpace. Put an NSImageView in that
window, and hand it a version of your image that you've retagged into
the destination colorspace using
-bitmapImageRepByRetaggingWithColorSpace:.
N.B.: This might not actually be any faster. I've never tried it.
--Kyle Sluder
_______________________________________________
Cocoa-dev mailing list (email@hidden)
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:
This email sent to email@hidden