func insertIndex(holder gxui.PanelHolder, at math.Point) int {
count := holder.PanelCount()
bestIndex := count
bestScore := float32(1e20)
score := func(point math.Point, index int) {
score := point.Sub(at).Len()
if score < bestScore {
bestIndex = index
bestScore = score
}
}
for i := 0; i < holder.PanelCount(); i++ {
tab := holder.Tab(i)
size := tab.Size()
ml := math.Point{Y: size.H / 2}
mr := math.Point{Y: size.H / 2, X: size.W}
score(gxui.TransformCoordinate(ml, tab, holder), i)
score(gxui.TransformCoordinate(mr, tab, holder), i+1)
}
return bestIndex
}
func (l *DropDownList) ShowList() bool {
if l.listShowing || l.overlay == nil {
return false
}
l.listShowing = true
s := l.Size()
at := math.Point{X: s.W / 2, Y: s.H}
l.overlay.Show(l.list, gxui.TransformCoordinate(at, l.outer, l.overlay))
gxui.SetFocus(l.list)
if l.onShowList != nil {
l.onShowList.Fire()
}
return true
}