example: update to latest Gio version

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

example/kitchen/kitchen.go

@@ -25,6 +25,7 @@ import (
 	"gioui.org/io/system"
 	"gioui.org/layout"
 	"gioui.org/op"
+	"gioui.org/op/clip"
 	"gioui.org/op/paint"
 	"gioui.org/text"
 	"gioui.org/unit"
@@ -241,14 +242,6 @@ func (b iconAndTextButton) Layout(gtx layout.Context) layout.Dimensions {
 	})
 }
 
-func bounds(gtx layout.Context) f32.Rectangle {
-	cs := gtx.Constraints
-	d := cs.Min
-	return f32.Rectangle{
-		Max: f32.Point{X: float32(d.X), Y: float32(d.Y)},
-	}
-}
-
 func kitchen(gtx layout.Context, th *material.Theme) layout.Dimensions {
 	for _, e := range lineEditor.Events() {
 		if e, ok := e.(widget.SubmitEvent); ok {
@@ -274,15 +267,16 @@ func kitchen(gtx layout.Context, th *material.Theme) layout.Dimensions {
 			gtx.Constraints.Min.Y = gtx.Px(unit.Dp(50))
 			gtx.Constraints.Max.Y = gtx.Constraints.Min.Y
 
-			dr := bounds(gtx)
+			dr := image.Rectangle{Max: gtx.Constraints.Min}
+			defer op.Push(gtx.Ops).Pop()
 			paint.LinearGradientOp{
-				Stop1:  dr.Min,
-				Stop2:  dr.Max,
+				Stop1:  layout.FPt(dr.Min),
+				Stop2:  layout.FPt(dr.Max),
 				Color1: color.RGBA{0x10, 0xff, 0x10, 0xFF},
 				Color2: color.RGBA{0x10, 0x10, 0xff, 0xFF},
 			}.Add(gtx.Ops)
-
-			paint.PaintOp{Rect: dr}.Add(gtx.Ops)
+			clip.Rect(dr).Add(gtx.Ops)
+			paint.PaintOp{}.Add(gtx.Ops)
 			return layout.Dimensions{
 				Size: gtx.Constraints.Max,
 			}