Re: Scrolling two elements in parallel

Scroll customization
<https://docs.google.com/document/d/1VnvAqeWFG9JFZfgG5evBqrLGDZYRE5w6G5jEDORekPY/edit?pli=1#heading=h.kd0gtwwz5bf9>
on
compositor worker would solve this problem cleanly, though it's still quite
speculative.

Feel free to submit a pull request here
<https://github.com/RByers/css-houdini-drafts/blob/master/css-scroll-api/UseCases.md>
adding
this use case.

Tim

On Mon, Mar 7, 2016 at 3:31 AM Dmitry Sagalovskiy <dmitry@getgrist.com>
wrote:

> I am responding to the call for input here:
> https://developer.mozilla.org/en-US/docs/Mozilla/Performance/Scroll-linked_effects
> .
>
> One effect that I am interested in is to synchronize the scrolling of two
> elements. (An example is the "frozen columns" feature of spreadsheets,
> where two panes are in separate side-by-side containers but should scroll
> in parallel.)
>
> The straightforward way of listening to 'scroll' event on each container,
> and updating scrollTop of the other is somewhat janky with synchronous
> scrolling, and visibly out-of-sync with asynchronous scrolling.
>
> From reading that page and scanning some of the linked pages, I didn't
> find any recommendations for how to achieve a smooth parallel scroll
> effect. (Perhaps "Compositor worker"?) Is there anything that can be used
> to achieve this today?
>
> Dmitry
>