Added Pos methods to DisplayDrag{Enter,Move}Event.

ui/dragdrop.go

@@ -34,7 +34,7 @@ func (t *dragDropEventTarget) DragEnter(pos geom.PointF32, files []string) {
 }
 
 func (t *dragDropEventTarget) DragMove(pos geom.PointF32) {
-	t.pushEvent(&DisplayDragMoveEnter{EventBase: t.eventBase(), X: pos.X, Y: pos.Y})
+	t.pushEvent(&DisplayDragMoveEvent{EventBase: t.eventBase(), X: pos.X, Y: pos.Y})
 }
 
 func (t *dragDropEventTarget) DragLeave() {

ui/event.go

@@ -12,15 +12,23 @@ type DisplayDragEnterEvent struct {
 	Files []string
 }
 
+func (e DisplayDragEnterEvent) Pos() geom.PointF32 {
+	return geom.PtF32(e.X, e.Y)
+}
+
 type DisplayDragLeaveEvent struct {
 	EventBase
 }
 
-type DisplayDragMoveEnter struct {
+type DisplayDragMoveEvent struct {
 	EventBase
 	X, Y float32
 }
 
+func (e DisplayDragMoveEvent) Pos() geom.PointF32 {
+	return geom.PtF32(e.X, e.Y)
+}
+
 type DisplayDropEvent struct {
 	EventBase
 	X, Y  float32

ui/examples/03_dragdrop/dragdrop.go

@@ -45,7 +45,7 @@ func (p *ping) Render(ctx ui.Context) {
 
 func (d *dropFiles) Handle(ctx ui.Context, e ui.Event) bool {
 	switch e := e.(type) {
-	case *ui.DisplayDragMoveEnter:
+	case *ui.DisplayDragMoveEvent:
 		d.ping.tick = time.Now()
 		d.ping.position = geom.PtF32(e.X, e.Y)
 		d.ping.over = true