func (t *SvgTextT) widths(font string) (r *cmapt.CMapT) {
if t.fontw == nil {
t.fontw = make(map[string]*cmapt.CMapT)
} else if r, ok := t.fontw[font]; ok {
return r
}
// initialize like for Courier.
r = cmapt.New()
r.AddDef(0, 256, 600*WIDTH_DENSITY/1000)
if t.fonts == nil {
t.fonts = t.Pdf.PageFonts(t.Pdf.Pages()[t.Page])
if t.fonts == nil {
return
}
}
if dr, ok := t.fonts[font]; ok {
d := t.Pdf.Dic(dr)
fc, ok := d["/FirstChar"]
if !ok {
return
}
lc, ok := d["/LastChar"]
if !ok {
return
}
wd, ok := d["/Widths"]
if !ok {
return
}
p := strm.Int(string(fc), 1)
q := strm.Int(string(lc), 1)
a := t.Pdf.Arr(wd)
for k := p; k < q; k++ {
r.Add(k, strm.Int(string(a[k-p]), WIDTH_DENSITY/1000))
}
}
return
}
func New() *CharMapperT {
r := new(CharMapperT)
r.Ranges = cmapt.New()
r.Uni = cmapt.New()
return r
}
