microsoft / microsoft/react-native-windows
[Fabric] Text onTextLayout reports zeros for much of the text layout info
Open
Nobody has claimed this yet.
Area: Fabric
Area: Text
enhancement
New Architecture
Parity: React Native
Workstream: Component Parity
- Dominant language
- C++
- Stars
- 17.3k
- Forks
- 1.2k
- Avg merge
- 1d 13h
- Merged PRs (30d)
- 33
Description
Our implementation of TextLayoutManager::measureLines returns zeros for descender, capHeight, ascender and xHeight. We should calculate the correct value for these.
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start by locating TextLayoutManager::measureLines in the React Native Windows codebase and trace how its results feed onTextLayout. Compare the reported descender, capHeight, ascender, and xHeight values with the expected text layout metrics, then verify that these fields no longer report zeros.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- cpp, react-native
- Domain
- frontend
- Issue type
- Bug
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 45/100