Subject: bug#29053: 26.0.90: scroller cannot be dragged to bottom of window

From: [email-masked] (Charles A. Roelli)
Date: Wed, 01 Nov 2017 21:43:46 +0100

> Date: Wed, 1 Nov 2017 16:52:34 +0000
> From: Alan Third <[email-masked]>
> 
> On Tue, Oct 31, 2017 at 10:12:47PM +0100, Charles A. Roelli wrote:
> >   (mouseDragged): Handle horizontal case. Call sendScrollEventAtLoc with
> >   absolute pixel size instead of ratio.
> 
> The problem is most likely in here.

Thanks for looking into it.

> > macOS 10.6 is probably a special case.
> 
> Possibly, it seems to work fine here.
> 
> Does 10.6 have buttons to click at the top and/or bottom of the
> scrollbar? If so they might affect the offset.

It has two buttons (up and down), at the bottom of the scrollbar.
When I drag the scroller as far down as possible, the distance between
the bottom of the scroller and the pointer (which should be zero)
looks about the same as the total height of the two buttons, so I
think you're right.

> -- 
> Alan Third