tooltips for menu items

[Paul Hahn]

Is there a way to have tooltips for one (all) menu items in an Fl_Menu_? More specifically, I have an instance of Fl_Choice (parent class is Fl_Menu_) and I would like to show tooltips for the selection items.

Is subclassing Fl_Choice and doing the work to implement some kind of "tooltip" in its handle() method override really the only way?

If it is, any suggestion on that implementation so the "tooltips" look and operate consistent with the usual FLTK widget tooltips?

[imm]

Hi Paul

The problem is that (for historical reasons that were good choices at the time) menu items are not true widgets (in the fltk sense) and so have no means to readily utilize the tooltip mechanism.

The issue with menu items not being widgets is one of those things that keeps coming round to bite us...

And I don't have a workaround for menu tooltips - though someone else may?

--
Ian
From my Fairphone FP3

[lifeatt...@gmail.com]

The edeproject has an old Github repository, where their efltk includes tooltip support for menu items. I _think_ the code is FLTK 2.0 based or possible 1.1.

https://github.com/edeproject/svn/tree/master/efltk/trunk

>>Is there a way to have tooltips for one (all) menu items in an Fl_Menu_?

[imm]

On Sun, 14 Aug 2022, 00:42 lifeatt.. wrote:

The edeproject has an old Github repository, where their efltk includes tooltip support for menu items. I _think_ the code is FLTK 2.0 based or possible 1.1.

I think it was fltk-2, though can't really remember (and have not checked!)

One of the innovations in fltk-2 was to make menu items full widgets, for exactly this sort of reason.

The fltk-2 API is quite different from fltk-1 and so porting isn't always trivial...

[Bill Spitzak]

Yes fltk-2 made all the menu and browser items into widgets, allowing them to all have their own boxtype, color, font, etc as well as their own drawing functions if you used a subclass. Incompatibility with fltk1 was a big problem though.

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[Sanel Zukan]

EDE 2.x (built with FLTK 1.x) has tooltip support inside menus, but I
had to "fork" Fl_Menu_Item to add support for it, mainly because
Fl_Menu_Item is hard to extend.

See MenuTooltip.h [1] and how is called in MenuItem.cpp
(Fl_Menu_Item.cpp fork) [2][3]. It is very easy and unobtrusive to add it
inside the existing Fl_Menu_Item.cpp code, so the current FLTK
maintainers might consider the same (or a similar) approach.

[1] https://github.com/edeproject/edelib/blob/master/edelib/MenuTooltip.h
[2] https://github.com/edeproject/edelib/blob/05edc0cc5d651234bbe9887d6e9ec5ffe0bb829e/src/MenuItem.cpp#L185
[3] https://github.com/edeproject/edelib/blob/05edc0cc5d651234bbe9887d6e9ec5ffe0bb829e/src/MenuItem.cpp#L540

Best,
Sanel