// VoffsetCoffset returns a visual and a character offset for a given cursor.
func (c *Cursor) VoffsetCoffset() (vo, co int) {
data := c.Line.Data[:c.Boffset]
for len(data) > 0 {
r, rlen := utf8.DecodeRune(data)
data = data[rlen:]
co += 1
vo += utils.RuneAdvanceLen(r, vo)
}
return
}
// Find a set of closest offsets for a given visual offset
func (l *Line) FindClosestOffsets(voffset int) (bo, co, vo int) {
data := l.Data
for len(data) > 0 {
var vodif int
r, rlen := utf8.DecodeRune(data)
data = data[rlen:]
vodif = utils.RuneAdvanceLen(r, vo)
if vo+vodif > voffset {
return
}
bo += rlen
co += 1
vo += vodif
}
return
}