kCTFontWidthTrait
The normalized proportion (width condense or expand) trait from the font traits dictionary.
Declaration
let kCTFontWidthTrait: CFStringDiscussion
This value corresponds to the relative interglyph spacing for a given font. The value returned is a CFNumber object representing a float between -1.0 and 1.0. The value of 0.0 corresponds to regular glyph spacing, and negative values represent condensed glyph spacing.