ui: merge Transform into TransformOp

The separate Transform type is not worth its weight.

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

ui/layout/flex.go

@@ -159,9 +159,7 @@ func (f *Flex) Layout(children ...FlexChild) Dimens {
 		}
 		var stack ui.StackOp
 		stack.Push(f.ops)
-		ui.TransformOp{
-			Transform: ui.Offset(toPointF(axisPoint(f.Axis, mainSize, cross))),
-		}.Add(f.ops)
+		ui.TransformOp{}.Offset(toPointF(axisPoint(f.Axis, mainSize, cross))).Add(f.ops)
 		child.macro.Add(f.ops)
 		stack.Pop()
 		mainSize += axisMain(f.Axis, dims.Size)

ui/layout/layout.go

@@ -96,7 +96,7 @@ func (in *Inset) Begin(c ui.Config, ops *ui.Ops, cs Constraints) Constraints {
 		}
 	}
 	in.stack.Push(ops)
-	ui.TransformOp{Transform: ui.Offset(toPointF(image.Point{X: in.left, Y: in.top}))}.Add(ops)
+	ui.TransformOp{}.Offset(toPointF(image.Point{X: in.left, Y: in.top})).Add(ops)
 	return mcs
 }
 
@@ -169,7 +169,7 @@ func (a *Align) End(dims Dimens) Dimens {
 	}
 	var stack ui.StackOp
 	stack.Push(ops)
-	ui.TransformOp{Transform: ui.Offset(toPointF(p))}.Add(ops)
+	ui.TransformOp{}.Offset(toPointF(p)).Add(ops)
 	a.macro.Add(ops)
 	stack.Pop()
 	return Dimens{

ui/layout/list.go

@@ -229,9 +229,7 @@ func (l *List) Layout() Dimens {
 		var stack ui.StackOp
 		stack.Push(ops)
 		draw.RectClip(r).Add(ops)
-		ui.TransformOp{
-			Transform: ui.Offset(toPointF(axisPoint(l.Axis, transPos, cross))),
-		}.Add(ops)
+		ui.TransformOp{}.Offset(toPointF(axisPoint(l.Axis, transPos, cross))).Add(ops)
 		child.macro.Add(ops)
 		stack.Pop()
 		pos += childSize

ui/layout/stack.go

@@ -106,7 +106,7 @@ func (s *Stack) Layout(children ...StackChild) Dimens {
 		}
 		var stack ui.StackOp
 		stack.Push(s.ops)
-		ui.TransformOp{Transform: ui.Offset(toPointF(p))}.Add(s.ops)
+		ui.TransformOp{}.Offset(toPointF(p)).Add(s.ops)
 		ch.macro.Add(s.ops)
 		stack.Pop()
 	}