gauge display enhancements: added ability to show/hide current value

README.md

@@ -105,6 +105,7 @@ gauges:
   - title: Minute progress
     rate-ms: 500        # sampling rate, default = 1000
     scale: 2            # number of digits after sample decimal point, default = 1
+    percent-only: false # toggle display of the current value, default = false
     color: 178          # 8-bit color number, default one is chosen from a pre-defined palette
     cur:
       sample: date +%S  # sample script for current value

component/gauge/gauge.go

@@ -20,22 +20,24 @@ const (
 type Gauge struct {
 	*ui.Block
 	*data.Consumer
-	minValue float64
-	maxValue float64
-	curValue float64
-	color    ui.Color
-	scale    int
-	palette  console.Palette
+	minValue    float64
+	maxValue    float64
+	curValue    float64
+	color       ui.Color
+	scale       int
+	percentOnly bool
+	palette     console.Palette
 }
 
 func NewGauge(c config.GaugeConfig, palette console.Palette) *Gauge {
 
 	g := Gauge{
-		Block:    component.NewBlock(c.Title, true, palette),
-		Consumer: data.NewConsumer(),
-		scale:    *c.Scale,
-		color:    *c.Color,
-		palette:  palette,
+		Block:       component.NewBlock(c.Title, true, palette),
+		Consumer:    data.NewConsumer(),
+		color:       *c.Color,
+		scale:       *c.Scale,
+		percentOnly: *c.PercentOnly,
+		palette:     palette,
 	}
 
 	go func() {
@@ -84,7 +86,12 @@ func (g *Gauge) Draw(buffer *ui.Buffer) {
 		percent = (100 * g.curValue) / (g.maxValue - g.minValue)
 	}
 
-	label := fmt.Sprintf("%v%% (%v)", util.FormatValue(percent, g.scale), g.curValue)
+	var label string
+	if g.percentOnly {
+		label = fmt.Sprintf(" %v%% ", util.FormatValue(percent, g.scale))
+	} else {
+		label = fmt.Sprintf(" %v%% (%v) ", util.FormatValue(percent, g.scale), util.FormatValue(g.curValue, g.scale))
+	}
 
 	// draw bar
 	barWidth := int((percent / 100) * float64(g.Inner.Dx()))

config/component.go

@@ -58,6 +58,7 @@ type GaugeConfig struct {
 	ComponentConfig `yaml:",inline"`
 	Scale           *int      `yaml:"scale,omitempty"`
 	Color           *ui.Color `yaml:"color,omitempty"`
+	PercentOnly     *bool     `yaml:"percent-only,omitempty"`
 	Cur             Item      `yaml:"cur"`
 	Max             Item      `yaml:"max"`
 	Min             Item      `yaml:"min"`

config/default.go

@@ -178,6 +178,7 @@ func (c *Config) setDefaultItemSettings() {
 	palette := console.GetPalette(*c.Theme)
 	colorsCount := len(palette.ContentColors)
 	defaultPty := false
+	defaultPercentOnly := false
 
 	for _, ch := range c.RunCharts {
 		for j, item := range ch.Items {
@@ -224,6 +225,9 @@ func (c *Config) setDefaultItemSettings() {
 		if g.Color == nil {
 			g.Color = &palette.ContentColors[i%colorsCount]
 		}
+		if g.PercentOnly == nil {
+			g.PercentOnly = &defaultPercentOnly
+		}
 		c.Gauges[i] = g
 	}