Re: Controlling line tightening
Re: Controlling line tightening
- Subject: Re: Controlling line tightening
- From: Aki Inoue <email@hidden>
- Date: Wed, 12 Mar 2008 11:48:55 -0700
John,
The tightening is controlled by -[NSParagraphStyle
tighteningFactorForTruncation].
http://developer.apple.com/documentation/Cocoa/Reference/
ApplicationKit/Classes/NSParagraphStyle_Class/Reference/
Reference.html#//apple_ref/occ/instm/NSParagraphStyle/
tighteningFactorForTruncation
Aki
On 2008/03/12, at 11:35, John Stiles wrote:
Followup: this requires a bit of math but it works great in
practice. I have a lot more control over the tightening now, which
is just what I needed. Thanks!
John Stiles wrote:
Interesting! I didn't think to use kerning directly. Thank you for
the idea!! It makes sense since obviously I am trying to do
something a little more sophisticated than the default "tighten"
functionality.
How does "line tightening" pick an appropriate kerning value? I'm
thinking you could use -cellSize to get the actual string width,
and then you could figure out the ratio of cell frame to desired
size to compute a kerning value... but I've never used kerning
before so I could be off in the weeds here.
glenn andreas wrote:
On Mar 11, 2008, at 9:54 PM, John Stiles wrote:
Gah, I spoke too soon.
This "solution" actually disables tightening entirely. So I'm
back to square one. Please help!
You could try to manually squeeze the result by setting an
attributed string's NSKernAttributeName value, but that would be
far from automatic (since you'd have to be constantly measuring
the string, redoing the kerning, and, in all likelihood, handle
the auto-ellipsification yourself).
It could probably be handled by a transformer in a binding, so it
may not be too bad, though there's no obvious way for the binding
to know the line width it needs to try to shrink the string to...
Glenn Andreas email@hidden
<http://www.gandreas.com/> wicked fun!
quadrium | prime : build, mutate, evolve, animate : the next
generation of fractal art
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