Measures the advance of text shown at fontSize without kerning: the sum of its glyph widths.
public double MeasureWidth(ReadOnlySpan<char> text, double fontSize)
The text.
The font size (Tf's size operand).
ISO 32000-2 §9.2.4 and §9.4.4, as MeasureWidth(ReadOnlySpan<Char>, Double, Boolean) without kerning.