Rubén Norte
f275603a2a
Summary: Pull Request resolved: https://github.com/facebook/react-native/pull/39328 This adds a new method in Fabric to get the scroll size for an element, and uses it to implement `scrollWidth` and `scrollHeight` as defined in https://github.com/react-native-community/discussions-and-proposals/pull/607 Scroll size determine how much of the content of a node would move if the node was scrollable. If the content does not overflow the padding box of the node, then this is the same as the `client{Width,Height}` (the size of the node without its borders). If the content would overflow the node, then it would be the size of the content that would be scrollable (in other words, what would "move" when you scrolled). If the element isn't displayed or it has display: inline, it return 0 in both cases. These APIs provide rounded integers. NOTE: The current implementation of `ScrollView` has several known bugs and inconsistencies across platforms (Android vs. iOS) and architectures (Paper vs. Fabric) (e.g.: content showing on top of the border on Android, `overflow: visible` only working on Android but not on iOS, etc.). The data that this API reports is the one that aligns with the Web (with a few limitations), and we'll need to fix the implementation to align with this. NOTE: transforms are not considered correctly for the sake of this API, but also not applied correctly in any of the native platforms. On Web, the scrollable area is the overflow of all the children **with transforms applied** which isn't honored in RN. We''ll fix the data reported by this API when we also fix the user perceived behavior. Changelog: [internal] Reviewed By: sammy-SC Differential Revision: D49058368 fbshipit-source-id: 39a10bf7bddec9afc54f46cc02284d601b6962f3
React Native
Learn once, write anywhere:
Build mobile apps with React.
Getting Started · Learn the Basics · Showcase · Contribute · Community · Support
React Native brings React's declarative UI framework to iOS and Android. With React Native, you use native UI controls and have full access to the native platform.
- Declarative. React makes it painless to create interactive UIs. Declarative views make your code more predictable and easier to debug.
- Component-Based. Build encapsulated components that manage their state, then compose them to make complex UIs.
- Developer Velocity. See local changes in seconds. Changes to JavaScript code can be live reloaded without rebuilding the native app.
- Portability. Reuse code across iOS, Android, and other platforms.
React Native is developed and supported by many companies and individual core contributors. Find out more in our ecosystem overview.
Contents
- Requirements
- Building your first React Native app
- Documentation
- Upgrading
- How to Contribute
- Code of Conduct
- License
📋 Requirements
React Native apps may target iOS 13.4 and Android 5.0 (API 21) or newer. You may use Windows, macOS, or Linux as your development operating system, though building and running iOS apps is limited to macOS. Tools like Expo can be used to work around this.
🎉 Building your first React Native app
Follow the Getting Started guide. The recommended way to install React Native depends on your project. Here you can find short guides for the most common scenarios:
📖 Documentation
The full documentation for React Native can be found on our website.
The React Native documentation discusses components, APIs, and topics that are specific to React Native. For further documentation on the React API that is shared between React Native and React DOM, refer to the React documentation.
The source for the React Native documentation and website is hosted on a separate repo, @facebook/react-native-website.
🚀 Upgrading
Upgrading to new versions of React Native may give you access to more APIs, views, developer tools, and other goodies. See the Upgrading Guide for instructions.
React Native releases are discussed in this discussion repo.
👏 How to Contribute
The main purpose of this repository is to continue evolving React Native core. We want to make contributing to this project as easy and transparent as possible, and we are grateful to the community for contributing bug fixes and improvements. Read below to learn how you can take part in improving React Native.
Code of Conduct
Facebook has adopted a Code of Conduct that we expect project participants to adhere to. Please read the full text so that you can understand what actions will and will not be tolerated.
Contributing Guide
Read our Contributing Guide to learn about our development process, how to propose bugfixes and improvements, and how to build and test your changes to React Native.
Open Source Roadmap
You can learn more about our vision for React Native in the Roadmap.
Good First Issues
We have a list of good first issues that contain bugs which have a relatively limited scope. This is a great place to get started, gain experience, and get familiar with our contribution process.
Discussions
Larger discussions and proposals are discussed in @react-native-community/discussions-and-proposals.
📄 License
React Native is MIT licensed, as found in the LICENSE file.
React Native documentation is Creative Commons licensed, as found in the LICENSE-docs file.