// tickLabelHeight returns height of the tick mark labels.
func tickLabelHeight(sty draw.TextStyle, ticks []Tick) vg.Length {
maxHeight := vg.Length(0)
for _, t := range ticks {
if t.IsMinor() {
continue
}
h := sty.Height(t.Label)
if h > maxHeight {
maxHeight = h
}
}
return maxHeight
}
