func (s *ScrollBar) MouseDown(ev gxui.MouseEvent) {
if s.barRect.Contains(ev.Point) {
initialOffset := ev.Point.Sub(s.barRect.Min)
var mms, mus gxui.EventSubscription
mms = ev.Window.OnMouseMove(func(we gxui.MouseEvent) {
p := gxui.WindowToChild(we.WindowPoint, s.outer)
s.SetScrollPosition(s.rangeAt(p.Sub(initialOffset)))
})
mus = ev.Window.OnMouseUp(func(we gxui.MouseEvent) {
mms.Unlisten()
mus.Unlisten()
})
}
s.InputEventHandler.MouseDown(ev)
}
func (l *SplitterLayout) SplitterDragged(splitter gxui.Control, wndPnt math.Point) {
o := l.orientation
p := gxui.WindowToChild(wndPnt, l.outer)
children := l.Container.Children()
splitterIndex := children.IndexOf(splitter)
childA, childB := children[splitterIndex-1], children[splitterIndex+1]
boundsA, boundsB := childA.Bounds(), childB.Bounds()
min, max := o.Major(boundsA.Min.XY()), o.Major(boundsB.Max.XY())
frac := math.RampSat(float32(o.Major(p.XY())), float32(min), float32(max))
netWeight := l.weights[childA.Control] + l.weights[childB.Control]
l.weights[childA.Control] = netWeight * frac
l.weights[childB.Control] = netWeight * (1.0 - frac)
l.LayoutChildren()
}