all: move Now from system.Config to system.FrameEvent

Then, make layout.Context.Now a field, copied from FrameEvent.Now.

API change:

	gofmt -r 'gtx.Now() -> gtx.Now'

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

widget/button.go

@@ -80,7 +80,7 @@ func (b *Clickable) Layout(gtx layout.Context) layout.Dimensions {
 	stack.Pop()
 	for len(b.history) > 0 {
 		c := b.history[0]
-		if c.End.IsZero() || gtx.Now().Sub(c.End) < 1*time.Second {
+		if c.End.IsZero() || gtx.Now.Sub(c.End) < 1*time.Second {
 			break
 		}
 		n := copy(b.history, b.history[1:])
@@ -104,19 +104,19 @@ func (b *Clickable) update(gtx layout.Context) {
 				NumClicks: e.NumClicks,
 			})
 			if l := len(b.history); l > 0 {
-				b.history[l-1].End = gtx.Now()
+				b.history[l-1].End = gtx.Now
 			}
 		case gesture.TypeCancel:
 			for i := range b.history {
 				b.history[i].Cancelled = true
 				if b.history[i].End.IsZero() {
-					b.history[i].End = gtx.Now()
+					b.history[i].End = gtx.Now
 				}
 			}
 		case gesture.TypePress:
 			b.history = append(b.history, Press{
 				Position: e.Position,
-				Start:    gtx.Now(),
+				Start:    gtx.Now,
 			})
 		}
 	}

widget/editor.go

@@ -129,7 +129,7 @@ func (e *Editor) processPointer(gtx layout.Context) {
 		axis = gesture.Vertical
 		smin, smax = sbounds.Min.Y, sbounds.Max.Y
 	}
-	sdist := e.scroller.Scroll(gtx, gtx, gtx.Now(), axis)
+	sdist := e.scroller.Scroll(gtx, gtx, gtx.Now, axis)
 	var soff int
 	if e.SingleLine {
 		e.scrollRel(sdist, 0)
@@ -142,7 +142,7 @@ func (e *Editor) processPointer(gtx layout.Context) {
 		switch {
 		case evt.Type == gesture.TypePress && evt.Source == pointer.Mouse,
 			evt.Type == gesture.TypeClick && evt.Source == pointer.Touch:
-			e.blinkStart = gtx.Now()
+			e.blinkStart = gtx.Now
 			e.moveCoord(gtx, image.Point{
 				X: int(math.Round(float64(evt.Position.X))),
 				Y: int(math.Round(float64(evt.Position.Y))),
@@ -163,7 +163,7 @@ func (e *Editor) processKey(gtx layout.Context) {
 		e.events = append(e.events, ChangeEvent{})
 	}
 	for _, ke := range gtx.Events(&e.eventKey) {
-		e.blinkStart = gtx.Now()
+		e.blinkStart = gtx.Now
 		switch ke := ke.(type) {
 		case key.FocusEvent:
 			e.focused = ke.Focus
@@ -309,7 +309,7 @@ func (e *Editor) layout(gtx layout.Context) layout.Dimensions {
 	e.clicker.Add(gtx.Ops)
 	e.caretOn = false
 	if e.focused {
-		now := gtx.Now()
+		now := gtx.Now
 		dt := now.Sub(e.blinkStart)
 		blinking := dt < maxBlinkDuration
 		const timePerBlink = time.Second / blinksPerSecond

widget/material/button.go

@@ -198,7 +198,7 @@ func drawInk(gtx layout.Context, c widget.Press) {
 		fadeDuration   = float32(0.9)
 	)
 
-	now := gtx.Now()
+	now := gtx.Now
 
 	t := float32(now.Sub(c.Start).Seconds())