set checkbox color

Signed-off-by: Jeff Carr <jcarr@wit.com>

add.go

@@ -56,6 +56,8 @@ func addWidget(n *tree.Node) {
 		return
 	case widget.Button:
 		nw.color = &colorButton
+	case widget.Checkbox:
+		nw.color = &colorCheckbox
 	case widget.Box:
 		nw.color = &colorBox
 		nw.isFake = true

color.go

@@ -54,7 +54,6 @@ var colorActiveW colorT = colorT{none, none, powdererBlue, none, powdererBlue, "
 var colorTab colorT = colorT{gocui.ColorBlue, gocui.ColorBlue, none, none, powdererBlue, "normal tab"}
 var colorActiveT colorT = colorT{gocui.ColorBlue, none, powdererBlue, none, powdererBlue, "active tab"}
 
-var colorButton colorT = colorT{gocui.ColorGreen, none, gocui.ColorWhite, gocui.ColorGreen, gocui.ColorBlack, "normal button"}
 var colorLabel colorT = colorT{none, none, superLightGrey, none, superLightGrey, "normal label"}
 var colorGroup colorT = colorT{none, none, superLightGrey, none, superLightGrey, "normal group"}
 
@@ -67,6 +66,24 @@ var colorDisabled colorT = colorT{
 	name:  "disabled widget",
 }
 
+var colorButton colorT = colorT{
+	frame: gocui.ColorGreen,
+	fg:    none,
+	bg:    gocui.ColorWhite,
+	selFg: gocui.ColorGreen,
+	selBg: gocui.ColorBlack,
+	name:  "normal button",
+}
+
+var colorCheckbox colorT = colorT{
+	frame: gocui.ColorRed,
+	fg:    none,
+	bg:    gocui.ColorWhite,
+	selFg: gocui.ColorGreen,
+	selBg: gocui.ColorBlack,
+	name:  "normal checkbox",
+}
+
 // widget debugging colors. these widgets aren't displayed unless you are debugging
 var colorRoot colorT = colorT{gocui.ColorRed, none, powdererBlue, none, gocui.ColorBlue, "debug root"}
 var colorFlag colorT = colorT{gocui.ColorRed, none, powdererBlue, none, gocui.ColorGreen, "debug flag"}

size.go

@@ -55,6 +55,8 @@ func (tk *guiWidget) Size() (int, int) {
 			}
 		}
 		return maxW + me.GroupPadW + 3, maxH
+	case widget.Checkbox:
+		return len(tk.String()) + 2, 3
 	}
 	if tk.isFake {
 		return 0, 0