Calculates the image bounds for a line.
- iOS 3.2+
- macOS 10.5+
- UIKit for Mac 13.0+Beta
- tvOS 9.0+
- watchOS 2.0+
- Core Text
The line whose image bounds are calculated.
The context for which the image bounds are calculated. This is required because the context could have settings in it that would cause changes in the image bounds.
A rectangle that tightly encloses the paths of the line's glyphs, or, if the line or context is invalid,