FontMetrics constructor
FontMetrics()
Initialize the font Metrics class with the parameters.
Implementation
FontMetrics(double ascent, double descent, int linegap, double height,
double superscriptfactor, double subscriptfactor) {
_ascent = ascent;
_descent = descent;
_lineGap = linegap;
_height = height;
_superscriptSizeFactor = superscriptfactor;
_subScriptSizeFactor = subscriptfactor;
}