Added custom text color for gauge when the text is highlighted (i.e. the

gauge bar is over the text).

example/gauge.go

@@ -56,7 +56,18 @@ func main() {
 	g3.Label = "{{percent}}% (100MBs free)"
 	g3.LabelAlign = termui.AlignRight
 
-	termui.Render(g0, g1, g2, g3)
+	g4 := termui.NewGauge()
+	g4.Percent = 50
+	g4.Width = 50
+	g4.Height = 3
+	g4.Y = 14
+	g4.Border.Label = "Gauge"
+	g4.Label = "Gauge with custom highlighted label"
+	g4.PercentColor = termui.ColorYellow
+	g4.BarColor = termui.ColorGreen
+	g4.PercentColorHighlighted = termui.ColorBlack
+
+	termui.Render(g0, g1, g2, g3, g4)
 
 	<-termui.EventCh()
 }

gauge.go

@@ -31,23 +31,27 @@ const (
 	AlignRight
 )
 
+const uint16max = ^uint16(0)
+
 type Gauge struct {
 	Block
-	Percent      int
-	BarColor     Attribute
-	PercentColor Attribute
-	Label        string
-	LabelAlign   Align
+	Percent                 int
+	BarColor                Attribute
+	PercentColor            Attribute
+	PercentColorHighlighted Attribute
+	Label                   string
+	LabelAlign              Align
 }
 
 // NewGauge return a new gauge with current theme.
 func NewGauge() *Gauge {
 	g := &Gauge{
-		Block:        *NewBlock(),
-		PercentColor: theme.GaugePercent,
-		BarColor:     theme.GaugeBar,
-		Label:        "{{percent}}%",
-		LabelAlign:   AlignCenter,
+		Block:                   *NewBlock(),
+		PercentColor:            theme.GaugePercent,
+		BarColor:                theme.GaugeBar,
+		Label:                   "{{percent}}%",
+		LabelAlign:              AlignCenter,
+		PercentColorHighlighted: Attribute(uint16max),
 	}
 
 	g.Width = 12
@@ -103,6 +107,9 @@ func (g *Gauge) Buffer() []Point {
 				p.Bg |= AttrReverse
 			}
 
+			if g.PercentColorHighlighted != Attribute(uint16max) {
+				p.Fg = g.PercentColorHighlighted
+			}
 		} else {
 			p.Bg = g.Block.BgColor
 		}