Piechart

_example/piechart.go

@@ -0,0 +1,62 @@
+// +build ignore
+
+package main
+
+import (
+	"fmt"
+	"github.com/gizak/termui"
+	"math"
+	"math/rand"
+	"time"
+)
+
+func main() {
+	if err := termui.Init(); err != nil {
+		panic(err)
+	}
+	defer termui.Close()
+	rand.Seed(time.Now().UTC().UnixNano())
+	randomDataAndOffset := func() (data []float64, offset float64) {
+		noSlices := 1 + rand.Intn(5)
+		data = make([]float64, noSlices)
+		for i := range data {
+			data[i] = rand.Float64()
+		}
+		offset = 2.0 * math.Pi * rand.Float64()
+		return
+	}
+	run := true
+
+	pc := termui.NewPieChart()
+	pc.BorderLabel = "Pie Chart"
+	pc.Width = 70
+	pc.Height = 36
+	pc.Data = []float64{.25, .25, .25, .25}
+	pc.Offset = -.5 * math.Pi
+	pc.Label = func(i int, v float64) string {
+		return fmt.Sprintf("%.02f", v)
+	}
+
+	termui.Handle("/timer/1s", func(e termui.Event) {
+		if run {
+			pc.Data, pc.Offset = randomDataAndOffset()
+			termui.Render(pc)
+		}
+	})
+
+	termui.Handle("/sys/kbd/s", func(termui.Event) {
+		run = !run
+		if run {
+			pc.BorderLabel = "Pie Chart"
+		} else {
+			pc.BorderLabel = "Pie Chart (Stopped)"
+		}
+		termui.Render(pc)
+	})
+
+	termui.Handle("/sys/kbd/q", func(termui.Event) {
+		termui.StopLoop()
+	})
+	termui.Render(pc)
+	termui.Loop()
+}