ui/layout,ui/app: fix tests, go fmt, update comments

Signed-off-by: Elias Naur <mail@eliasnaur.com>

ui/app/os_wayland.go

@@ -98,21 +98,21 @@ type window struct {
 	notify struct {
 		read, write int
 	}
-	ppdp, ppsp        float32
+	ppdp, ppsp float32
-	scroll struct {
+	scroll     struct {
-		time        time.Duration
+		time  time.Duration
-		steps        image.Point
+		steps image.Point
-		dist f32.Point
+		dist  f32.Point
 	}
-	lastPos           f32.Point
+	lastPos   f32.Point
-	lastTouch         f32.Point
+	lastTouch f32.Point
 
 	fling struct {
 		yExtrapolation fling.Extrapolation
 		xExtrapolation fling.Extrapolation
-		anim        fling.Animation
+		anim           fling.Animation
-		start     bool
+		start          bool
-		dir f32.Point
+		dir            f32.Point
 	}
 
 	stage             Stage

ui/gesture/gesture.go

@@ -104,7 +104,7 @@ func (c *Click) State() ClickState {
 	return c.state
 }
 
-// Next returns the next click event, if any.
+// Events returns the next click event, if any.
 func (c *Click) Events(q ui.Queue) []ClickEvent {
 	var events []ClickEvent
 	for _, evt := range q.Events(c) {

ui/layout/layout_test.go

@@ -149,6 +149,6 @@ func (config) Px(v ui.Value) int {
 	return int(v.V + .5)
 }
 
-func (queue) Next(k ui.Key) (ui.Event, bool) {
+func (queue) Events(k ui.Key) []ui.Event {
-	return nil, false
+	return nil
 }

ui/layout/list.go

@@ -66,7 +66,7 @@ const (
 
 const inf = 1e6
 
-// Init prepares the list for iterating through its children with Next.
+// init prepares the list for iterating through its children with next.
 func (l *List) init(gtx *Context, len int) {
 	if l.more() {
 		panic("unfinished child")