[Bug 24514] LVM_SUBITEMHITTEST should return negative subitem index for negative Y coordinate

[wine-bugs at winehq.org]

http://bugs.winehq.org/show_bug.cgi?id=24514

--- Comment #4 from Nikolay Sivov <bunglehead at gmail.com> 2010-09-26 03:45:43 CDT ---
(In reply to comment #3)
> (In reply to comment #2)
> > So if there's no application that depends on this for now, I'm suggesting it to
> > be fixed in tests and another todo test to be added that shows negative subitem
> > index increasing.
> 
> Setting y=-1 stops the failures, but I'm not exactly sure how to do the
> "negative subitem index increasing" bit to be locale independent as I'm not
> 100% sure what it's doing. 

You need LVM_GETITEMRECT and then 'y = (top - bottom)/2' to be placed half item
height outside list visible area.

> It does seem to be doing a calculation of the index
> by just dividing the y coordinate by a height (perhaps the height of an item),
> but exactly where the change from -1 to -2 and -2 to -3 (etc.) occurs seems
> perplexing to me.

Same way, try 'y = 3*(top - bottom)/2' and expect -2 as index. Item rectangle
fully depends on selected font, that's why it's better to avoid hardcoded
values.

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