> I tested a Microsoft wheelmouse, and it was same as Logitech; 0.1 per
> click.
>
> I tried a few different techniques massaging the deltas..
> this one seemed to work well, as it avoids the scale, but lets the
> single clicks through. This yielded a pretty reasonable "scroll" in
> fltk's editor:
> _________________________________________________________________________________
>
> + // Under OSX, single mousewheel increments are 0.1,
> + // so make sure they show up as at least 1..
> + //
> + float dx = [theEvent deltaX]; if ( fabs(dx) < 1.0 ) dx = (dx > 0) ? 1.0 :
> -1.0;
> + float dy = [theEvent deltaY]; if ( fabs(dy) < 1.0 ) dy = (dy > 0) ? 1.0 :
> -1.0;
> if ([theEvent deltaX] != 0) {
> - Fl::e_dx = (int)-[theEvent deltaX];
> + Fl::e_dx = (int)-dx;
> Fl::e_dy = 0;
> if ( Fl::e_dx) Fl::handle( FL_MOUSEWHEEL, window );
> } else if ([theEvent deltaY] != 0) {
> Fl::e_dx = 0;
> - Fl::e_dy = (int)-[theEvent deltaY];
> + Fl::e_dy = (int)-dy;
> if ( Fl::e_dy) Fl::handle( FL_MOUSEWHEEL, window );
> _________________________________________________________________________________
Greg: I think this one seems to be the good one, according to your
pertinent tests.
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