Re: Custom line breaking in NSTextView
Re: Custom line breaking in NSTextView
- Subject: Re: Custom line breaking in NSTextView
- From: Aki Inoue <email@hidden>
- Date: Tue, 26 Jul 2005 17:44:26 -0700
The bottleneck for line breaking for the Text System is -
[NSAttributedString lineBreakBeforeIndex:withinRange:]. You can
implement a subclass of NSTextStorage and override this method to
have custom behavior.
Aki
(I seem to remember that this has been discussed before, a couple of
years ago, but without a satisfactory solution; and I can't find the
thread in the archives right now.)
I would like to customize the line breaking in an NSTextView in such a
way that it doesn't wrap at the window width, but after a certain
number
of characters, say 72. Any suggestions how to go about this?
I suspect that one solution might be to sub-class NSATSTypesetter and
override
layoutGlyphsInLayoutManager:
startingAtGlyphIndex:
maxNumberOfLineFragments:
nextGlyphIndex:
but that seems like a lot of work to me (if I can figure out at all
what
exactly I have to do in my overridden method).
Any pointers (especially at sample code) would be much appreciated.
--
Stefan Haller
Ableton
http://www.ableton.com/
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