Kevin Walzer wrote:
>  Joe English wrote:
>  > Note that [ttk::button] widgets provide an easier way to
>  > achieve this effect:
>  > [...]
>  The issue here is that, under Aqua, Tk buttons (whether standard or
>  Tile's toolbutton style) darken completely when they are pressed. Modern
>  toolbutton behavior on the Mac (if accessed via the HIToolbar API)
>  doesn't work this way: the image and/or text darkens, but the rest of
>  the button retains transparency. Tk buttons with images are mapped to
>  the bevel button widget under Aqua, which is an older widget style not
>  much used anymore.

Tile's built-in aqua Toolbutton style also uses bevel buttons.
But that's easy to fix, see below...

(The aqua theme, unfortunately, still looks circa OSX 10.2.
I haven't done a very good job keeping up with Apple, sorry :-(.


>  Using your suggestion works to alter the image
>  depending on the button's state, but the entire button still gets dark
>  when pressed--which is what I'm trying to avoid.
> 
>  I'm pretty sure changing this behavior at the C level would be a lot of
>  work, and I don't have the first clue how to do it.

In this particular case you don't need to do anything in C --
you can replace the default Toolbutton layout with:

	style theme settings aqua {
	    style layout Toolbar.TButton {
	    	Toolbar.TButton.padding -children {
		    Toolbar.TButton.label
		}
	    }
	    style configure Toolbar.TButton -padding {whatever's appropriate}
	    # Possibly: use [style map ... ] to change foreground settings.
	}

(Using "Toolbar.TButton" style instead of "Toolbutton",
so as not to interfere with Toolbutton-style check- and
radiobuttons.)

Some of the other OSX-specific stuff -- round buttons,
small and tiny sizes for various controls, etc., --
do require new C code for support [*], but 10.4-style
toolbar buttons are simple enough -- there's almost nothing
to them, just a label -- that you can build one in Tcl.

[*] Which I will get around to implementing someday ...


--Joe English

  jenglish@[...].com

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