Re: Ellipsizing

[Daniel Boles <dboles src gmail com>]

I had the same desire and arrived at this method. I can't vouch for whether it works in every situation, but it has never seemed to fail for me.

The idea is that you force the full natural request by setting :max-width-chars to -1, get that request, then check whether it's below the actual allocation and en/disable the tooltip accordingly. then, of course, change :max-width-chars back to something that allows ellipsisation

so, in short:

• set_max_width_chars(-1);
• get_preferred_width(dummy, natural);
  
• set_has_tooltip( natural < get_allocated_width() );
• set_max_width_chars(0);