The title basically says it. I have a string (not very long; less
than 150 characters) that is wrapped inside an NSTextField (a
label). I want to find the bounding rects of a couple substrings,
so that I can overlay them with an NSButton. I've been searching
around, and I've found a promising lead with NSLayoutManager's "-
boundingRectForGlyphRange:inTextContainer:", but I've never used an
NSTextContainer before and am not sure how they work.
Would this be the proper way to do it? How can I create an
NSTextContainer that contains a string?
It might be better to ask what you're trying to accomplish with the
buttons. Do you really want to add stock buttons on top of the text,
or do you just need hit testing or a way to display the text
differently? It's probably worth mentioning that even if you did add
the buttons, editing the text field would be problematic because the
NSTextField swaps in a field editor view, which I bet would obscure
or interact weirdly with your buttons.
Depending on what you're actually trying to do here, it might be
better to insert a custom NSTextAttachment into your content, switch
to using an NSTextView (which provides access to NSTextContainer and
friends), or build your own view subclass that draws text using an
NSLayoutManager directly.
~Martin
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