On Oct 22, 2011, at 1:21 PM, Jens Alfke wrote: > > On Oct 21, 2011, at 10:47 AM, David Duncan wrote: > >> Are you seeing this on iOS 5.0 only or on previous versions of iOS? There >> were some text changes that (for a time) leaked out non-integral values, but >> we thought we caught them > > Huh? But text advances _are_ non-integral values. You can’t do proper line > layout if your metrics all get rounded to the nearest integer.
Prior to iOS 5 -drawAtPoint: did return integral values, which could lead to odd situations such as rendering @"m" and @"a" requiring more of an advance than rendering @"ma". Changes below UIKit caused the advances returned by -drawAtPoint: and similar methods to be non-integral, which of course would change layout for some clients. And your right, you do want non-integral values to do high quality text layout, and that may be a good reason not to change this back, but it is a change relative to previous OSes, so it is something to at least be understood. -- David Duncan _______________________________________________ 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
