class flash.text.engine.FontMetrics
Available on flash
var emBox:Rectangle
var lineGap:Float
var strikethroughOffset:Float
var strikethroughThickness:Float
var subscriptOffset:Float
var subscriptScale:Float
var superscriptOffset:Float
var superscriptScale:Float
var underlineOffset:Float
var underlineThickness:Float
function new(emBox:Rectangle, strikethroughOffset:Float, strikethroughThickness:Float, underlineOffset:Float, underlineThickness:Float, subscriptOffset:Float, subscriptScale:Float, superscriptOffset:Float, superscriptScale:Float, ?lineGap:Float):Void