70 lines
1.2 KiB
Go
70 lines
1.2 KiB
Go
package main
|
|
|
|
import (
|
|
"fmt"
|
|
"github.com/nsf/termbox-go"
|
|
"time"
|
|
)
|
|
|
|
func tbPrint(x, y int, fg, bg termbox.Attribute, msg string) {
|
|
for _, c := range msg {
|
|
termbox.SetCell(x, y, c, fg, bg)
|
|
x++
|
|
}
|
|
}
|
|
|
|
func draw(i int) {
|
|
termbox.Clear(termbox.ColorDefault, termbox.ColorDefault)
|
|
defer termbox.Flush()
|
|
|
|
w, h := termbox.Size()
|
|
s := fmt.Sprintf("count = %d", i)
|
|
|
|
tbPrint((w/2)-(len(s)/2), h/2, termbox.ColorRed, termbox.ColorDefault, s)
|
|
}
|
|
|
|
func main() {
|
|
err := termbox.Init()
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
termbox.SetInputMode(termbox.InputEsc)
|
|
|
|
go func() {
|
|
time.Sleep(5 * time.Second)
|
|
termbox.Interrupt()
|
|
|
|
// This should never run - the Interrupt(), above, should cause the event
|
|
// loop below to exit, which then exits the process. If something goes
|
|
// wrong, this panic will trigger and show what happened.
|
|
time.Sleep(1 * time.Second)
|
|
panic("this should never run")
|
|
}()
|
|
|
|
var count int
|
|
|
|
draw(count)
|
|
mainloop:
|
|
for {
|
|
switch ev := termbox.PollEvent(); ev.Type {
|
|
case termbox.EventKey:
|
|
if ev.Ch == '+' {
|
|
count++
|
|
} else if ev.Ch == '-' {
|
|
count--
|
|
}
|
|
|
|
case termbox.EventError:
|
|
panic(ev.Err)
|
|
|
|
case termbox.EventInterrupt:
|
|
break mainloop
|
|
}
|
|
|
|
draw(count)
|
|
}
|
|
termbox.Close()
|
|
|
|
fmt.Println("Finished")
|
|
}
|