func uiDetail(detail *termui.List) *termui.Grid {
body := termui.NewGrid()
help := termui.NewPar("s:summary(main view) q:quit h:help")
help.Height = 3
help.Border.Label = "Keyboard shortcuts"
detail.Height = 15
body.AddRows(
termui.NewRow(termui.NewCol(12, 0, help)),
termui.NewRow(termui.NewCol(12, 0, detail)))
return body
}
func uiHelp() *termui.Grid {
body := termui.NewGrid()
kbHelp := termui.NewList()
kbHelp.Items = []string{
"h: Help",
"s: Summary view",
"c: processes by cpu usage",
"C: cgroups for cpu subsystem",
"m: processes by memory usage",
"M: cgroups for memory subsystem",
"i: processes by io",
"d: disk io statistics",
"f: filesystem statistics",
"n: network interface statistics",
"p: problems found",
"q: Quit",
}
kbHelp.Border.Label = "Keyboard shortcuts"
kbHelp.Height = 20
body.AddRows(termui.NewRow(termui.NewCol(12, 0, kbHelp)))
return body
}
func uiSummary(widgets *osmain.DisplayWidgets) *termui.Grid {
body := termui.NewGrid()
help := termui.NewPar("q:quit h:help c:cpu etc")
help.Height = 3
body.AddRows(
termui.NewRow(
termui.NewCol(8, 0, widgets.Summary),
termui.NewCol(4, 0, help)),
termui.NewRow(
termui.NewCol(6, 0, widgets.ProcessesByCPU),
termui.NewCol(6, 0, widgets.ProcessesByMemory)),
termui.NewRow(
termui.NewCol(8, 0, widgets.ProcessesByIO),
termui.NewCol(4, 0, widgets.DiskIOUsage)),
termui.NewRow(
termui.NewCol(6, 0, widgets.FileSystemUsage),
termui.NewCol(6, 0, widgets.InterfaceUsage)),
termui.NewRow(
termui.NewCol(6, 0, widgets.CgroupsCPU),
termui.NewCol(6, 0, widgets.CgroupsMem)),
termui.NewRow(termui.NewCol(12, 0, widgets.Problems)))
return body
}
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)
}
}
}
