termui/_examples/piechart.go
Caleb Bassi b227bd5277 Rework event system
* Timers should now be done through Go tickers
* Reworked event names used in Handle()
* Reworked Event type and payloads
2018-09-06 16:43:11 -07:00

72 lines
1.1 KiB
Go

// +build ignore
package main
import (
"fmt"
"math"
"math/rand"
"time"
ui "github.com/gizak/termui"
)
func main() {
ui.Init()
defer ui.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 := ui.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)
}
drawTicker := time.NewTicker(time.Second)
drawTickerCount := 1
go func() {
for {
if run {
pc.Data, pc.Offset = randomDataAndOffset()
ui.Render(pc)
}
drawTickerCount++
<-drawTicker.C
}
}()
ui.Handle("s", func(ui.Event) {
run = !run
if run {
pc.BorderLabel = "Pie Chart"
} else {
pc.BorderLabel = "Pie Chart (Stopped)"
}
ui.Render(pc)
})
ui.Handle("q", func(ui.Event) {
ui.StopLoop()
})
ui.Render(pc)
ui.Loop()
}