Does anybody know how to change the truncation Mode for Window
titles, so that the Ellipsis are drawn in the middle of the Title
and not at the end.
I don't think there is a simple way to do what you ask. Most of the
"standard" truncation you see in NSTextFields and such is achieved by
calling -setLineBreakMode: on the field's attributed string's
paragraphStyle with a value of NSLineBreakByTruncatingMiddle or some
such. NSWindow's setTitle does not take an attributed string. It
takes a plain old NSString. So it would seem the "normal" way one
would control how text truncates is not applicable to window titles.
In the absence of more traditional methods, we must look for
something in the API that will let us set how the window deals with
titles. A quick look at NSWindow docs under the "Setting the title
and filename" section gives us:
None of which have options to change title truncation. So it looks to
me as though, if you want to truncate the title in the middle, you
will have to do it yourself. Maybe do something like compare the
window's width to the size of your title (in pixels), and cut the
title until it fits? And then register for
NSWindowDidResizeNotifications to do this again whenever the window
is resized?
That's my best guess,
-Joshua Emmons
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