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)
}
// InputEventHandler overrides
func (b *SplitterBar) MouseDown(e gxui.MouseEvent) {
b.isDragging = true
b.onDragStart.Fire(e)
var mms, mus gxui.EventSubscription
mms = e.Window.OnMouseMove(func(we gxui.MouseEvent) {
if b.onDrag != nil {
b.onDrag(we.WindowPoint)
}
})
mus = e.Window.OnMouseUp(func(we gxui.MouseEvent) {
mms.Unlisten()
mus.Unlisten()
b.isDragging = false
b.onDragEnd.Fire(we)
})
b.InputEventHandler.MouseDown(e)
}
func beginTabDragging(holder gxui.PanelHolder, panel gxui.Control, name string, window gxui.Window) {
var mms, mos gxui.EventSubscription
mms = window.OnMouseMove(func(ev gxui.MouseEvent) {
for _, c := range gxui.TopControlsUnder(ev.WindowPoint, ev.Window) {
if over, ok := c.C.(gxui.PanelHolder); ok {
insertAt := insertIndex(over, c.P)
if over == holder {
if insertAt > over.PanelIndex(panel) {
insertAt--
}
}
holder.RemovePanel(panel)
holder = over
holder.AddPanelAt(panel, name, insertAt)
holder.Select(insertAt)
}
}
})
mos = window.OnMouseUp(func(gxui.MouseEvent) {
mms.Unlisten()
mos.Unlisten()
})
}