func main() {
err := termui.Init()
if err != nil {
panic(err)
}
defer termui.Close()
termui.UseTheme("helloworld")
strs := []string{
"[0] github.com/gizak/termui",
"[1] 你好，世界",
"[2] こんにちは世界",
"[3] keyboard.go",
"[4] output.go",
"[5] random_out.go",
"[6] dashboard.go",
"[7] nsf/termbox-go"}
ls := termui.NewList()
ls.Items = strs
ls.ItemFgColor = termui.ColorYellow
ls.Border.Label = "List"
ls.Height = 7
ls.Width = 25
ls.Y = 0
termui.Render(ls)
<-termui.EventCh()
}
func main() {
err := termui.Init()
if err != nil {
panic(err)
}
defer termui.Close()
termui.UseTheme("helloworld")
bc := termui.NewBarChart()
data := []int{3, 2, 5, 3, 9, 5, 3, 2, 5, 8, 3, 2, 4, 5, 3, 2, 5, 7, 5, 3, 2, 6, 7, 4, 6, 3, 6, 7, 8, 3, 6, 4, 5, 3, 2, 4, 6, 4, 8, 5, 9, 4, 3, 6, 5, 3, 6}
bclabels := []string{"S0", "S1", "S2", "S3", "S4", "S5"}
bc.Border.Label = "Bar Chart"
bc.Data = data
bc.Width = 26
bc.Height = 10
bc.DataLabels = bclabels
bc.TextColor = termui.ColorGreen
bc.BarColor = termui.ColorRed
bc.NumColor = termui.ColorYellow
termui.Render(bc)
<-termui.EventCh()
}
func main() {
err := termui.Init()
if err != nil {
panic(err)
}
defer termui.Close()
termui.UseTheme("helloworld")
data := []int{4, 2, 1, 6, 3, 9, 1, 4, 2, 15, 14, 9, 8, 6, 10, 13, 15, 12, 10, 5, 3, 6, 1, 7, 10, 10, 14, 13, 6}
spl0 := termui.NewSparkline()
spl0.Data = data[3:]
spl0.Title = "Sparkline 0"
spl0.LineColor = termui.ColorGreen
// single
spls0 := termui.NewSparklines(spl0)
spls0.Height = 2
spls0.Width = 20
spls0.HasBorder = false
spl1 := termui.NewSparkline()
spl1.Data = data
spl1.Title = "Sparkline 1"
spl1.LineColor = termui.ColorRed
spl2 := termui.NewSparkline()
spl2.Data = data[5:]
spl2.Title = "Sparkline 2"
spl2.LineColor = termui.ColorMagenta
// group
spls1 := termui.NewSparklines(spl0, spl1, spl2)
spls1.Height = 8
spls1.Width = 20
spls1.Y = 3
spls1.Border.Label = "Group Sparklines"
spl3 := termui.NewSparkline()
spl3.Data = data
spl3.Title = "Enlarged Sparkline"
spl3.Height = 8
spl3.LineColor = termui.ColorYellow
spls2 := termui.NewSparklines(spl3)
spls2.Height = 11
spls2.Width = 30
spls2.Border.FgColor = termui.ColorCyan
spls2.X = 21
spls2.Border.Label = "Tweeked Sparkline"
termui.Render(spls0, spls1, spls2)
<-termui.EventCh()
}
func main() {
err := termui.Init()
if err != nil {
panic(err)
}
defer termui.Close()
termui.UseTheme("helloworld")
sinps := (func() []float64 {
n := 220
ps := make([]float64, n)
for i := range ps {
ps[i] = 1 + math.Sin(float64(i)/5)
}
return ps
})()
lc0 := termui.NewLineChart()
lc0.Border.Label = "braille-mode Line Chart"
lc0.Data = sinps
lc0.Width = 50
lc0.Height = 12
lc0.X = 0
lc0.Y = 0
lc0.AxesColor = termui.ColorWhite
lc0.LineColor = termui.ColorGreen | termui.AttrBold
lc1 := termui.NewLineChart()
lc1.Border.Label = "dot-mode Line Chart"
lc1.Mode = "dot"
lc1.Data = sinps
lc1.Width = 26
lc1.Height = 12
lc1.X = 51
lc1.DotStyle = '+'
lc1.AxesColor = termui.ColorWhite
lc1.LineColor = termui.ColorYellow | termui.AttrBold
lc2 := termui.NewLineChart()
lc2.Border.Label = "dot-mode Line Chart"
lc2.Mode = "dot"
lc2.Data = sinps[4:]
lc2.Width = 77
lc2.Height = 16
lc2.X = 0
lc2.Y = 12
lc2.AxesColor = termui.ColorWhite
lc2.LineColor = termui.ColorCyan | termui.AttrBold
termui.Render(lc0, lc1, lc2)
<-termui.EventCh()
}
func main() {
err := termui.Init()
if err != nil {
panic(err)
}
defer termui.Close()
termui.UseTheme("helloworld")
g0 := termui.NewGauge()
g0.Percent = 40
g0.Width = 50
g0.Height = 3
g0.Border.Label = "Slim Gauge"
g0.BarColor = termui.ColorRed
g0.Border.FgColor = termui.ColorWhite
g0.Border.LabelFgColor = termui.ColorCyan
g2 := termui.NewGauge()
g2.Percent = 60
g2.Width = 50
g2.Height = 3
g2.PercentColor = termui.ColorBlue
g2.Y = 3
g2.Border.Label = "Slim Gauge"
g2.BarColor = termui.ColorYellow
g2.Border.FgColor = termui.ColorWhite
g1 := termui.NewGauge()
g1.Percent = 30
g1.Width = 50
g1.Height = 5
g1.Y = 6
g1.Border.Label = "Big Gauge"
g1.PercentColor = termui.ColorYellow
g1.BarColor = termui.ColorGreen
g1.Border.FgColor = termui.ColorWhite
g1.Border.LabelFgColor = termui.ColorMagenta
g3 := termui.NewGauge()
g3.Percent = 50
g3.Width = 50
g3.Height = 3
g3.Y = 11
g3.Border.Label = "Gauge with custom label"
g3.Label = "{{percent}}% (100MBs free)"
g3.LabelAlign = termui.AlignRight
termui.Render(g0, g1, g2, g3)
<-termui.EventCh()
}
func main() {
err := termui.Init()
if err != nil {
panic(err)
}
defer termui.Close()
termui.UseTheme("helloworld")
bc := termui.NewMBarChart()
math := []int{90, 85, 90, 80}
english := []int{70, 85, 75, 60}
science := []int{75, 60, 80, 85}
compsci := []int{100, 100, 100, 100}
bc.Data[0] = math
bc.Data[1] = english
bc.Data[2] = science
bc.Data[3] = compsci
studentsName := []string{"Ken", "Rob", "Dennis", "Linus"}
bc.Border.Label = "Student's Marks X-Axis=Name Y-Axis=Marks[Math,English,Science,ComputerScience] in %"
bc.Width = 100
bc.Height = 50
bc.Y = 10
bc.BarWidth = 10
bc.DataLabels = studentsName
bc.ShowScale = true //Show y_axis scale value (min and max)
bc.SetMax(400)
bc.TextColor = termui.ColorGreen //this is color for label (x-axis)
bc.BarColor[3] = termui.ColorGreen //BarColor for computerscience
bc.BarColor[1] = termui.ColorYellow //Bar Color for english
bc.NumColor[3] = termui.ColorRed // Num color for computerscience
bc.NumColor[1] = termui.ColorRed // num color for english
//Other colors are automatically populated, btw All the students seems do well in computerscience. :p
termui.Render(bc)
<-termui.EventCh()
}
func main() {
err := termui.Init()
if err != nil {
panic(err)
}
defer termui.Close()
termui.UseTheme("helloworld")
par0 := termui.NewPar("Borderless Text")
par0.Height = 1
par0.Width = 20
par0.Y = 1
par0.HasBorder = false
par1 := termui.NewPar("你好，世界。")
par1.Height = 3
par1.Width = 17
par1.X = 20
par1.Border.Label = "标签"
par2 := termui.NewPar("Simple text\nwith label. It can be multilined with \\n or break automatically")
par2.Height = 5
par2.Width = 37
par2.Y = 4
par2.Border.Label = "Multiline"
par2.Border.FgColor = termui.ColorYellow
par3 := termui.NewPar("Long text with label and it is auto trimmed.")
par3.Height = 3
par3.Width = 37
par3.Y = 9
par3.Border.Label = "Auto Trim"
termui.Render(par0, par1, par2, par3)
<-termui.EventCh()
}
func main() {
err := ui.Init()
if err != nil {
panic(err)
}
defer ui.Close()
sinps := (func() []float64 {
n := 400
ps := make([]float64, n)
for i := range ps {
ps[i] = 1 + math.Sin(float64(i)/5)
}
return ps
})()
sinpsint := (func() []int {
ps := make([]int, len(sinps))
for i, v := range sinps {
ps[i] = int(100*v + 10)
}
return ps
})()
ui.UseTheme("helloworld")
spark := ui.Sparkline{}
spark.Height = 8
spdata := sinpsint
spark.Data = spdata[:100]
spark.LineColor = ui.ColorCyan
spark.TitleColor = ui.ColorWhite
sp := ui.NewSparklines(spark)
sp.Height = 11
sp.Border.Label = "Sparkline"
lc := ui.NewLineChart()
lc.Border.Label = "braille-mode Line Chart"
lc.Data = sinps
lc.Height = 11
lc.AxesColor = ui.ColorWhite
lc.LineColor = ui.ColorYellow | ui.AttrBold
gs := make([]*ui.Gauge, 3)
for i := range gs {
gs[i] = ui.NewGauge()
gs[i].Height = 2
gs[i].HasBorder = false
gs[i].Percent = i * 10
gs[i].PaddingBottom = 1
gs[i].BarColor = ui.ColorRed
}
ls := ui.NewList()
ls.HasBorder = false
ls.Items = []string{
"[1] Downloading File 1",
"", // == \newline
"[2] Downloading File 2",
"",
"[3] Uploading File 3",
}
ls.Height = 5
par := ui.NewPar("<> This row has 3 columns\n<- Widgets can be stacked up like left side\n<- Stacked widgets are treated as a single widget")
par.Height = 5
par.Border.Label = "Demonstration"
// build layout
ui.Body.AddRows(
ui.NewRow(
ui.NewCol(6, 0, sp),
ui.NewCol(6, 0, lc)),
ui.NewRow(
ui.NewCol(3, 0, ls),
ui.NewCol(3, 0, gs[0], gs[1], gs[2]),
ui.NewCol(6, 0, par)))
// calculate layout
ui.Body.Align()
done := make(chan bool)
redraw := make(chan bool)
update := func() {
for i := 0; i < 103; i++ {
for _, g := range gs {
g.Percent = (g.Percent + 3) % 100
}
sp.Lines[0].Data = spdata[:100+i]
lc.Data = sinps[2*i:]
time.Sleep(time.Second / 2)
redraw <- true
}
done <- true
}
evt := ui.EventCh()
ui.Render(ui.Body)
go update()
for {
select {
case e := <-evt:
if e.Type == ui.EventKey && e.Ch == 'q' {
return
}
if e.Type == ui.EventResize {
ui.Body.Width = ui.TermWidth()
ui.Body.Align()
go func() { redraw <- true }()
}
case <-done:
return
case <-redraw:
ui.Render(ui.Body)
}
}
}
func main() {
// never use more than one process
runtime.GOMAXPROCS(1)
// wait group to let the main program run forever in batchmode
var wg sync.WaitGroup
// options
var batchmode, servermode bool
var address string
var stepSec int
var nIter int
var evt <-chan termui.Event
var widgets *osmain.DisplayWidgets
var uiSummaryBody *termui.Grid
var uiHelpBody *termui.Grid
var uiDetailList *termui.List
flag.BoolVar(&batchmode, "b", false, "Run in batch mode; suitable for parsing")
flag.BoolVar(&batchmode, "batchmode", false, "Run in batch mode; suitable for parsing")
flag.IntVar(&nIter, "n", 0, "Quit after these many iterations")
flag.IntVar(&nIter, "iterations", 0, "Quit after these many iterations")
flag.BoolVar(&servermode, "server", false,
"Runs continously and exposes metrics as JSON on HTTP")
flag.StringVar(&address, "address", ":19999",
"address to listen on for http if running in server mode")
flag.IntVar(&stepSec, "step", 2,
"metrics are collected every step seconds")
flag.Usage = func() {
fmt.Fprintf(os.Stderr, "Options \n")
fmt.Fprintf(os.Stderr, "------- \n")
flag.PrintDefaults()
fmt.Fprintf(os.Stderr, "Notes \n")
fmt.Fprintf(os.Stderr, "------- \n")
fmt.Fprintf(os.Stderr, "All CPU percentages are normalized to total number of logical cpus \n")
}
flag.Parse()
if servermode {
batchmode = true
}
if !batchmode {
err := termui.Init()
termui.UseTheme("helloworld")
if err != nil {
log.Fatalf("Unable to initialize termui", err)
}
widgets = uiWidgets()
uiSummaryBody = uiSummary(widgets)
uiHelpBody = uiHelp()
uiDetailList = termui.NewList()
evt = termui.EventCh()
// display summary view
termui.Body = uiSummaryBody
uiRefresh()
}
// Initialize a metric context
m := metrics.NewMetricContext("system")
// Default step for collectors
step := time.Millisecond * time.Duration(stepSec) * 1000
// Register various stats we are interested in tracking
stats := osmain.Register(m, step)
// run http server
if servermode {
go func() {
http.HandleFunc("/api/v1/metrics.json", m.HttpJsonHandler)
log.Fatal(http.ListenAndServe(address, nil))
}()
}
iterationsRun := 0
// runs forever
wg.Add(1)
go func() {
for {
// Clear previous problems
var problems []string
stats.Problems = problems
// Quit after n iterations if specified
iterationsRun++
if nIter > 0 && iterationsRun > nIter {
break
}
stats.Print(batchmode, widgets)
if !batchmode {
termui.Render(termui.Body)
}
time.Sleep(step)
// be aggressive about reclaiming memory
// tradeoff with CPU usage
runtime.GC()
debug.FreeOSMemory()
}
}()
if !batchmode {
for {
e := <-evt
if e.Type == termui.EventKey {
switch e.Ch {
case 'q':
termui.Close()
return
case 'c':
uiDetailList = widgets.ProcessesByCPU
termui.Body = uiDetail(uiDetailList)
case 'd':
uiDetailList = widgets.DiskIOUsage
termui.Body = uiDetail(uiDetailList)
case 'C':
uiDetailList = widgets.CgroupsCPU
termui.Body = uiDetail(uiDetailList)
case 'f':
uiDetailList = widgets.FileSystemUsage
termui.Body = uiDetail(uiDetailList)
case 'm':
uiDetailList = widgets.ProcessesByMemory
termui.Body = uiDetail(uiDetailList)
case 'p':
uiDetailList = widgets.Problems
termui.Body = uiDetail(uiDetailList)
case 'M':
uiDetailList = widgets.CgroupsMem
termui.Body = uiDetail(uiDetailList)
case 'n':
uiDetailList = widgets.InterfaceUsage
termui.Body = uiDetail(uiDetailList)
case 'i':
uiDetailList = widgets.ProcessesByIO
termui.Body = uiDetail(uiDetailList)
case 's':
uiResetAttributes(widgets)
termui.Body = uiSummaryBody
case 'h':
termui.Body = uiHelpBody
}
uiRefresh()
}
if e.Type == termui.EventResize {
uiRefresh()
}
}
}
wg.Wait()
}