Add text fragment rect measurement APIs #55279
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Summary: When `getBoundingClientRect()` is called on a nested `<Text>` component (TextShadowNode), return the parent paragraph's bounding rect instead of empty/invalid metrics. TextShadowNode is a virtual node that doesn't have its own layout metrics. This matches web behavior where inline elements return their container's rect. Use `getClientRects()` (added in a follow-up diff) to get the individual fragment rects for text that spans multiple lines. Differential Revision: D91087220
Summary: Adds Android-specific implementation for measuring bounding rectangles of text fragments that belong to a specific React tag. This enables getting the visual boundaries of nested `<Text>` components within a paragraph. The implementation provides two methods: 1. `getFragmentRectsForReactTag` - Uses PreparedLayout for efficient measurement when the enablePreparedTextLayout feature flag is enabled 2. `getFragmentRectsFromAttributedString` - Fallback that creates a layout on-demand when PreparedLayout is not available Key features: - Handles multi-line text fragments by returning a rect for each line - Correctly handles RTL text direction - Converts coordinates between pixels and DIPs These methods are used by the DOM getClientRects() API to provide accurate text fragment boundaries for accessibility and layout inspection. Differential Revision: D91087221
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Summary:
Adds Android-specific implementation for measuring bounding rectangles of
text fragments that belong to a specific React tag. This enables getting
the visual boundaries of nested
<Text>components within a paragraph.The implementation provides two methods:
getFragmentRectsForReactTag- Uses PreparedLayout for efficient measurementwhen the enablePreparedTextLayout feature flag is enabled
getFragmentRectsFromAttributedString- Fallback that creates a layouton-demand when PreparedLayout is not available
Key features:
These methods are used by the DOM getClientRects() API to provide accurate
text fragment boundaries for accessibility and layout inspection.
Differential Revision: D91087221