func (dw *DocWriter) widthsForFontCodepage(f *font.Font, cpi codepage.CodepageIndex) *indirectObject {
var widths [256]int
upm := f.UnitsPerEm()
// Avoid divide by zero error for unusual fonts.
if upm > 0 {
for i, r := range cpi.Map() {
designWidth, _ := f.AdvanceWidth(r)
widths[i] = designWidth * 1000 / upm
}
}
pdfWidths := arrayFromInts(widths[32:])
ioWidths := &indirectObject{dw.nextSeq(), 0, &pdfWidths}
return ioWidths
}
