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Dynamic pre-rendering / over-rendering
See original GitHub issueRelates to this Twitter thread: https://twitter.com/Vjeux/status/1008077144289787904
Since the scrolling thread can get ahead of the UI thread, windowing libraries sometimes show blank space in the direction being scrolled (especially for sudden, quick scrolling).
It might be possible to use a heuristic based on the scroll delta and the time between commits (i.e. componentDidUpdate calls) to render ahead of where the scroll position currently is. This might enable us to reduce the amount of visible white space when scrolling quickly.
This heuristic would need to take the state.scrollUpdateWasRequested value into consideration so that programmatic scroll-jumps wouldn’t cause us to render ahead.
Issue Analytics
- State:
- Created 5 years ago
- Reactions:4
- Comments:7 (4 by maintainers)
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Here is a side by side demo of a proof of concept: https://react-window-dhruaiojyq.now.sh/
List B uses the offset adjustment technique.
The code has been pushed here. (No tests added as of yet.) https://github.com/bvaughn/react-window/compare/master...issues/12
I don’t think this experiment shows enough promise to pursue any further.