0975e96d53
Summary:
This diff fixes overflowInset calculation when a shadow node has transform matrix from a transfrom prop in JS. Specifically, this fixed the use case when transform directly used on a view component. When using Animated.View, it will create an invisible wrapper which will behave correctly with existing logic. This diff bring both use cases to work properly.
When a shadow node has transform on it, it will affect the overflowInset values for its parent nodes, but won't affect its own or any of its child nodes overflowInset values. This is obvious for translateX/Y case, but not for scale case. Take a look at the following case:
```
┌────────────────┐ ┌────────────────┐ ┌────────────────┐
│Original Layout │ │ Translate AB │ │ Scale AB │
└────────────────┘ └────────────────┘ └────────────────┘
─────▶ ◀───── ─────▶
┌ ─ ─ ─ ┬──────────┐─ ─ ─ ─ ┐ ┌ ─ ─ ─ ┬──────────┐─ ─ ─ ─ ─ ┐ ┌ ─ ─ ─ ─ ─ ┬──────────┐─ ─ ─ ─ ─ ┐
│ A │ │ A │ │ A │
│ │ │ │ │ │ │ │ ├ ─ ─ ─ ─ ─ ┼ ─ ─┌─────┤─ ─ ─ ─ ─ ┤
─ ─ ─ ─│─ ─ ─┌───┐┼ ─ ─ ─ ─ │ │ ◀─ ─ ─ │ │AB │ ─ ─ ─▶
│ │ │AB ││ │ │ ┌ ─ ─ ┼ ─ ─ ─ ┬──┴┬ ─ ─ ─ ─ ┤ │ │ │ │ │
└─────┤ ├┘ └───────┤AB │ └────┤ │
│ │┌──┴─────────┤ │ │ │ │ │ │ │ │ ┌───┴──────────┤
││ABC │ │┌──┴─────────┐ │ │ABC │
│ │└──┬─────────┤ │ │ │ ││ABC │ │ │ │ │ │ │
┌───ABD───────┴─┐ │ │ │└──┬─────────┘ │ ▼ │ └───┬──────────┘
├─────────────┬─┘ │ │ │ │ ├───ABD───────┴─┐ │ │ │ ├────────────────┴──┐ │ │
─ ─ ─ ─ ─ ─ ─└───┘─ ─ ─ ─ ─ ▼ └─────────────┬─┘ │ ▼ │ ABD │ │
└ ┴ ─ ─ ─ ─ ─ ─ ┴───┴ ─ ─ ─ ─ ┘ ├────────────────┬──┘ │ │
─ ─ ─ ─ ─ ─ ─ ─ ┴─────┴ ─ ─ ─ ─ ─
```
For the translate case, only view A has change on the overflowInset values for `right` and `bottom`. Note that the `left` and `top` are not changed as we union before and after transform is applied.
For the scale case, similar things are happening for view A, and both `left`, `right`, and `bottom` values are increased. However, for View AB or any of its children, they only *appear* to be increased, but that is purely cosmetic as it's caused by transform. The actual values are not changed, which will later be converted during render phase to actual pixels on screen.
In summary, overflowInset is affected from child nodes transform matrix to the current node (bottom up), but not from transform matrix on the current node to child nodes (top down). So the correct way to apply transform is to make it only affect calculating `contentFrame` during layout, which collects child nodes layout information and their transforms. The `contentFrame` is then used to decide the overflowInset values for the parent node. The current transform matrix on parent node is never used as it's not affecting overflowInset for the current node or its child nodes.
This diff reflects the context above with added unit test to cover the scale and translate transform matrix.
Changelog:
[Android/IOS][Fixed] - Fixed how we calculate overflowInset with transform matrix
Reviewed By: sammy-SC
Differential Revision: D34433404
fbshipit-source-id: 0e48e4af4cfd5a6dd32a30e7667686e8ef1a7004
|
||
|---|---|---|
| .bundle | ||
| .circleci | ||
| .github | ||
| IntegrationTests | ||
| Libraries | ||
| React | ||
| ReactAndroid | ||
| ReactCommon | ||
| bots | ||
| docs | ||
| flow | ||
| flow-typed/npm | ||
| gradle | ||
| jest | ||
| keystores | ||
| local-cli | ||
| packages | ||
| repo-config | ||
| scripts | ||
| template | ||
| third-party-podspecs | ||
| tools/build_defs | ||
| .buckconfig | ||
| .buckjavaargs | ||
| .clang-format | ||
| .editorconfig | ||
| .eslintignore | ||
| .eslintrc | ||
| .flowconfig | ||
| .flowconfig.android | ||
| .gitignore | ||
| .prettierrc | ||
| .ruby-version | ||
| BUCK | ||
| CHANGELOG.md | ||
| CODE_OF_CONDUCT.md | ||
| CONTRIBUTING.md | ||
| ECOSYSTEM.md | ||
| Gemfile | ||
| Gemfile.lock | ||
| LICENSE | ||
| LICENSE-docs | ||
| README.md | ||
| React-Core.podspec | ||
| React.podspec | ||
| build.gradle.kts | ||
| cli.js | ||
| gradle.properties | ||
| gradlew | ||
| gradlew.bat | ||
| index.js | ||
| interface.js | ||
| jest-preset.js | ||
| jest.config.js | ||
| metro.config.js | ||
| package.json | ||
| react-native.config.js | ||
| react.gradle | ||
| rn-get-polyfills.js | ||
| runXcodeTests.sh | ||
| settings.gradle.kts | ||
| template.config.js | ||
| yarn.lock | ||
README.md
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 11.0 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.