FontMetrics

constructor(    size: Double = 0.0,     top: Double = 0.0,     ascent: Double = 0.0,     baseline: Double = 0.0,     descent: Double = 0.0,     bottom: Double = 0.0,     lineGap: Double = 0.0,     maxWidth: Double = 0.0,     unitsPerEm: Double = 0.0)