On 1 Feb 2013, at 21:54, Howard Rubin wrote:
> I'm adding a symbol to an Fl_Menu_Item on an Fl_Menu_Bar using
> set_labeltype(). It's mostly working but when the menu is dropped down,
> the symbol moves to the left by about 12 units. (BTW, this approach
> solves the "Changing an Fl_Menu_Bar item colors" question)
>
> Why does the symbol move and how can I keep it from moving?
I'm not entirely sure *why* it is happening, but it is pretty easy to see
*what* is happening...
If you modify menu_label as follows...
void menu_label(const Fl_Label* o, int X, int Y, int W, int H, Fl_Align a) {
fl_normal_label(o, X, Y, W, H, a);
// ***** Why does this move when the menu item is selected? *****
// W = 63; // apply the sledgehammer fix...
int xx = X + W - 12;
int yy = Y + (H / 2);
printf("pos (%d, %d) (X %d Y %d W %d H %d)\n", xx, yy, X, Y, W, H);
fl_circle(xx, yy, 5);
}
Then at run time (on this Mac, numbers on other hosts might conceivably differ?)
For the "not selected" menu:
pos (60, 12) (X 9 Y 0 W 63 H 25)
For the "selected" menu:
pos (45, 9) (X 6 Y 0 W 51 H 19)
Now... I am not sure what I'm seeing there, but I speculate that the changes to
X and H reflect the change in the size of the selection rectangle or something,
they seem to be about 3 (or 6) pixels off the size of the no-selection case? 3
pixels seems about right for the "inset" of the selection from the edges...
The kicker is the change in the W value - and I don't know what is happening
there at all...
However, that is the key - note the commented out "sledgehammer fix" in the
code fragment. With that enabled it all "works" just fine.
So; not a solution, but might be a hint where to look (or how to hack around
it!)
_______________________________________________
fltk mailing list
[email protected]
http://lists.easysw.com/mailman/listinfo/fltk
