Tweaking fast scroller to follow touch closer.
- Issue: The fast scroller currently does not follow the touch input
because fundamentally, the fixed scrollbar height and the mapping
of the scroll space to the scrollbar space is fundamentally incompatible.
- This CL changes the fast scroller to allow it to detach when the user
fast-scrolls, then re-attaches after the user scrolls the screen and
the current scroll position for the scrollbar picks up the thumb position.
- Since the scroll position and the fast scroller thumb is now detached,
we can change the distribution of the fast scroll letters to make it
independent of the rows for each section and instead uniformly distribute
it along the scrollbar, which allows for more stability.
- There are edge cases where this fails, especially when there are few
apps, which we can investigate further.
Bug: 20035978
Change-Id: I8322f862107e6f330deff692885233706564bffd
7 files changed