> On 12 Nov 2014, at 3:27 am, Kyle Sluder <k...@ksluder.com> wrote: > > On Fri, Nov 7, 2014, at 04:40 PM, Graham Cox wrote: >> In the past, I've obtained bezier paths from laid out text using a >> subclass of NSLayoutManager that overrode the deprecated >> -showPackedGlyphs:length:... method. This method had a nice smooth >> impedance match with [NSBezierPath appendPackedGlyphs:]. The method has >> been deprecated since 10.7, but was still working fine in 10.9. In 10.10, >> this approach broke. The method is still called, but the resulting glyph >> runs include all sorts of extraneous characters which seem to be relics >> of earlier layouts (possibly NSLayoutManager does more aggressive caching >> in 10.10). > > What are you actually trying to do?
Get the bezier path(s) of some laid-out text. From this I do further operations on the paths to create special text effects. > That is, why and to what degree does > it matter when and how often -showPackedGlyphs: is called? That's a good question. I'm not sure. The way I was capturing the paths was to use this method to copy the glyph paths to a bezier path using -appendPackedGlyphs: I did assume the method was being called only once for a given piece of text, though if it is called more than once, I'm not sure of the consequences for the bezier path - would characters be appended to the end of the run (i.e. is there some sort of internal advancement for each appended glyph?) or would it just add a path on top of an existing one? The documentation for -appendPackedGlyphs isn't very enlightening. I'll look into this, it could be the issue. > Also, have you tried disabling discontiguous layout? No, I'll try that as well. But some basic questions remain: 1. What is the relationship between CGGlyph and NSGlyph? 2. Given that the old -showPackedGlyphs: method is deprecated, and its replacement -showCGGlyphs: doesn't seem to have a natural match to a NSBezierPath method, what is the correct general approach when using this newer method to capture paths? --Graham _______________________________________________ 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: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
