From 3a216b96b6a7c80275a2516e7de82d9b2ffc96df Mon Sep 17 00:00:00 2001
From: Clement Benard <contact@clementbenard.com>
Date: Thu, 4 Jul 2019 16:28:51 +0200
Subject: added layout basics

---
 examples/layout/button.go | 64 +++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 64 insertions(+)
 create mode 100644 examples/layout/button.go

(limited to 'examples/layout/button.go')

diff --git a/examples/layout/button.go b/examples/layout/button.go
new file mode 100644
index 0000000..6c907e3
--- /dev/null
+++ b/examples/layout/button.go
@@ -0,0 +1,64 @@
+package main
+
+import (
+	"image"
+	"image/color"
+	"image/draw"
+	"log"
+
+	"github.com/faiface/gui"
+	"github.com/faiface/gui/win"
+)
+
+func Button(env gui.Env, theme *Theme, text string, action func()) {
+	textImg := MakeTextImage(text, theme.Face, theme.Text)
+
+	redraw := func(r image.Rectangle, over, pressed bool) func(draw.Image) image.Rectangle {
+		return func(drw draw.Image) image.Rectangle {
+			var clr color.Color
+			if pressed {
+				clr = theme.ButtonDown
+			} else if over {
+				clr = theme.ButtonOver
+			} else {
+				clr = theme.ButtonUp
+			}
+			draw.Draw(drw, r, &image.Uniform{clr}, image.ZP, draw.Src)
+			DrawCentered(drw, r, textImg, draw.Over)
+			return r
+		}
+	}
+
+	var (
+		r       image.Rectangle
+		over    bool
+		pressed bool
+	)
+
+	for e := range env.Events() {
+		switch e := e.(type) {
+		case gui.Resize:
+			r = e.Rectangle
+			log.Print("button ", e)
+			env.Draw() <- redraw(r, over, pressed)
+
+		case win.MoDown:
+			newPressed := e.Point.In(r)
+			if newPressed != pressed {
+				pressed = newPressed
+				env.Draw() <- redraw(r, over, pressed)
+			}
+
+		case win.MoUp:
+			if pressed {
+				if e.Point.In(r) {
+					action()
+				}
+				pressed = false
+				env.Draw() <- redraw(r, over, pressed)
+			}
+		}
+	}
+
+	close(env.Draw())
+}
-- 
cgit v1.2.3


From 736e35bd9b0c8f4f9649557e4b7a3085b4bdbe63 Mon Sep 17 00:00:00 2001
From: Clement Benard <contact@clementbenard.com>
Date: Mon, 15 Jul 2019 15:44:34 +0200
Subject: Easier and more idiomatic Layout initializing

---
 examples/layout/button.go | 2 --
 1 file changed, 2 deletions(-)

(limited to 'examples/layout/button.go')

diff --git a/examples/layout/button.go b/examples/layout/button.go
index 6c907e3..0693e06 100644
--- a/examples/layout/button.go
+++ b/examples/layout/button.go
@@ -4,7 +4,6 @@ import (
 	"image"
 	"image/color"
 	"image/draw"
-	"log"
 
 	"github.com/faiface/gui"
 	"github.com/faiface/gui/win"
@@ -39,7 +38,6 @@ func Button(env gui.Env, theme *Theme, text string, action func()) {
 		switch e := e.(type) {
 		case gui.Resize:
 			r = e.Rectangle
-			log.Print("button ", e)
 			env.Draw() <- redraw(r, over, pressed)
 
 		case win.MoDown:
-- 
cgit v1.2.3


From 8d183ef96a57e3a2f42c0cb4ec0ab4c256e0d47e Mon Sep 17 00:00:00 2001
From: Clement Benard <contact@clementbenard.com>
Date: Wed, 7 Aug 2019 16:02:33 +0200
Subject: Made the layout package actually usable

---
 examples/layout/button.go | 7 +++++++
 1 file changed, 7 insertions(+)

(limited to 'examples/layout/button.go')

diff --git a/examples/layout/button.go b/examples/layout/button.go
index 0693e06..cf13c3d 100644
--- a/examples/layout/button.go
+++ b/examples/layout/button.go
@@ -40,6 +40,13 @@ func Button(env gui.Env, theme *Theme, text string, action func()) {
 			r = e.Rectangle
 			env.Draw() <- redraw(r, over, pressed)
 
+		case win.MoMove:
+			nover := e.Point.In(r)
+			if nover != over {
+				over = nover
+				env.Draw() <- redraw(r, over, pressed)
+			}
+
 		case win.MoDown:
 			newPressed := e.Point.In(r)
 			if newPressed != pressed {
-- 
cgit v1.2.3