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react-native/packages/virtualized-lists
Nick Gerleman 4f8a8ce316 Fix inverted contentOffset in scroll events in RTL (#39031)
Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/39031

`UIScrollView` `contentOffset` is flow-relative, so `x` is relative to the right edge of the screen. This coordinate space disagrees with layout events, `scrollTo` coordinates, and other platforms.

This applies the same logic we use for inverting `scrollTo` coordinates to invert `contentOffset` in scroll events, in both Paper and Fabric. We then remove the iOS specific workaround we have in VirtualizedList.

I did not test `contentInset` as part of this, whose structure has explicit edges like `left` and `right`.

Changelog:
[iOS][Fixed] - Fix inverted `contentOffset` in scroll events in RTL

Reviewed By: rozele

Differential Revision: D48379915

fbshipit-source-id: 8a9cbb01608e79ef3b179a76fbe3997a0cd23845
2023-08-21 18:03:43 -07:00
..

@react-native/virtualized-lists

Version

Installation

yarn add @react-native/virtualized-lists

Note: We're using yarn to install deps. Feel free to change commands to use npm 3+ and npx if you like

Testing

To run the tests in this package, run the following commands from the React Native root folder:

  1. yarn to install the dependencies. You just need to run this once
  2. yarn jest packages/virtualized-lists.