From 74951e8ce517855695b43cfb693132ed0d2d3c23 Mon Sep 17 00:00:00 2001
From: Greg <gmp@wow.st>
Date: Thu, 15 Aug 2019 17:47:46 -0400
Subject: [PATCH] Add giowrap.Clickable().

---
 cmd/hello/main.go | 14 ++++++------
 main.go           | 54 +++++++++++++++++++++++++++--------------------
 2 files changed, 38 insertions(+), 30 deletions(-)

diff --git a/cmd/hello/main.go b/cmd/hello/main.go
index 7eb3e94..0ba352c 100644
--- a/cmd/hello/main.go
+++ b/cmd/hello/main.go
@@ -25,23 +25,23 @@ func main() {
 		ctx := giowrap.NewContext(w)
 		t := time.NewTicker(time.Second/30)
 		e1 := giowrap.NewEditor(ctx.Faces.For(regular, ui.Sp(24)), true)
-		e1.SetText("hi there")
+		e1.SetText("text 1")
 		e1.Focus()
 
 		e2 := giowrap.NewEditor(ctx.Faces.For(regular, ui.Sp(24)), true)
-		e2.SetText("ok bye")
+		e2.SetText("text 2")
 
 		f := giowrap.NewFlex(layout.Vertical, layout.Start, layout.Start)
 		OuterInset := giowrap.NewInset(ui.Dp(10),ui.Dp(10),ui.Dp(10),ui.Dp(10))
 		InnerInset := giowrap.NewInset(ui.Dp(10),ui.Dp(10),ui.Dp(10),ui.Dp(10))
 
-		lbl := giowrap.NewButton(
+		lbl := giowrap.NewLabel(
 			ctx.Faces.For(regular, ui.Sp(24)),
-			"centered",
+			"push",
 			text.Center,
 		)
 		bg := giowrap.NewBackground(giowrap.Rgb(0x3c98c6), ui.Dp(4))
-		btn := bg(lbl)
+		btn := giowrap.Clickable(bg(lbl))
 
 		for {
 			select {
@@ -52,7 +52,7 @@ func main() {
 				case app.DestroyEvent:
 					return
 				case app.DrawEvent:
-					ctx.Reset(e)
+					ctx = ctx.Reset(e)
 					ctx = giowrap.LayoutWithContext(ctx,
 						OuterInset(
 						    f(
@@ -63,7 +63,7 @@ func main() {
 							btn,
 						)))
 					ctx.Draw()
-					if lbl.Clicked(ctx) {
+					if btn.Clicked(ctx) {
 						log.Print("Clicked: " + e2.Text() )
 					}
 				}
diff --git a/main.go b/main.go
index 5da3546..7a61c9c 100644
--- a/main.go
+++ b/main.go
@@ -38,11 +38,12 @@ func NewContext(w *app.Window) Context {
 	}
 }
 
-func (ctx *Context) Reset(e app.DrawEvent) {
+func (ctx Context) Reset(e app.DrawEvent) Context {
 	ctx.c = &e.Config
 	ctx.ops.Reset()
 	ctx.cs = layout.RigidConstraints(e.Size)
 	ctx.Faces.Reset(ctx.c)
+	return ctx
 }
 
 func (ctx Context) Draw() {
@@ -76,13 +77,12 @@ type Widget interface {
 
 type WidgetCombinator func(...Widget) Widget
 
-type Button struct {
+type Label struct {
 	l *text.Label
-	click gesture.Click
 }
 
-func NewButton(face text.Face, t string, alignment text.Alignment) *Button {
-	ret := &Button{}
+func NewLabel(face text.Face, t string, alignment text.Alignment) *Label {
+	ret := &Label{}
 	ret.l = &text.Label{
 		Face: face,
 		Text: t,
@@ -91,22 +91,11 @@ func NewButton(face text.Face, t string, alignment text.Alignment) *Button {
 	return ret
 }
 
-func (b *Button) Layout(ctx Context) Context {
-	ctx.dims = b.l.Layout(ctx.ops, ctx.cs)
-	pointer.RectAreaOp{Size: ctx.dims.Size}.Add(ctx.ops)
-	b.click.Add(ctx.ops)
+func (l *Label) Layout(ctx Context) Context {
+	ctx.dims = l.l.Layout(ctx.ops, ctx.cs)
 	return ctx
 }
 
-func (b *Button) Clicked(ctx Context) bool {
-	for _,e := range b.click.Events(ctx.q) {
-		if e.Type == gesture.TypeClick {
-			return true
-		}
-	}
-	return false
-}
-
 type Editor struct {
 	e *text.Editor
 }
@@ -142,11 +131,6 @@ func Argb(c uint32) color.RGBA {
 	return color.RGBA{A: uint8(c >> 24), R: uint8(c >> 16), G: uint8(c >> 8), B: uint8(c)}
 }
 
-type FlexChild struct {
-	x float32
-	w Widget
-}
-
 type Flex WidgetCombinator
 
 func Flexible(v float32) Widget {
@@ -280,3 +264,27 @@ func rrect(ops *ui.Ops, width, height, se, sw, nw, ne float32) {
 	b.End()
 }
 
+type cWidget struct {
+	w Widget
+	click *gesture.Click
+}
+
+func (w cWidget) Layout(ctx Context) Context {
+	ctx = w.w.Layout(ctx)
+	pointer.RectAreaOp{Size: ctx.dims.Size}.Add(ctx.ops)
+	w.click.Add(ctx.ops)
+	return ctx
+}
+
+func (w cWidget) Clicked(ctx Context) bool {
+	for _,e := range w.click.Events(ctx.q) {
+		if e.Type == gesture.TypeClick {
+			return true
+		}
+	}
+	return false
+}
+
+func Clickable(w Widget) cWidget {
+	return cWidget{ w: w, click: new(gesture.Click) }
+}