stone/examples/hello/main.go

package main

import "os"
import "fmt"
import "time"
import "image"
import _ "image/png"
import "git.tebibyte.media/sashakoshka/stone"
import _ "git.tebibyte.media/sashakoshka/stone/backends/x"

var application = &stone.Application { }
var currentTime = time.Time { }
var tickPing    = make(chan(struct { }))

func main () {
	application.SetTitle("hellorld")
	application.SetSize(12, 2)

	iconFile16, err := os.Open("assets/scaffold16.png")
	if err != nil { panic(err) }
	icon16, _, err := image.Decode(iconFile16)
	if err != nil { panic(err) }
	iconFile16.Close()
	iconFile32, err := os.Open("assets/scaffold32.png")
	if err != nil { panic(err) }
	icon32, _, err := image.Decode(iconFile32)
	if err != nil { panic(err) }
	iconFile16.Close()
	
	application.SetIcon([]image.Image { icon16, icon32 })
	
	channel, err := application.Run()
	if err != nil { panic(err) }
	
	redraw()
	go tick()

	for {
		select {
		case <- tickPing:
			redraw()
		
		case event := <- channel:
			switch event.(type) {
			case stone.EventQuit:
				os.Exit(0)

			case stone.EventResize:
				redraw()
			}
		}
	}
}

func redraw () {
	currentTime = time.Now()

	application.ResetDot()
	fmt.Fprintln(application, "hellorld!")

	hour   := currentTime.Hour()
	minute := currentTime.Minute()
	second := currentTime.Second()

	application.SetRune(0, 1, rune(hour / 10 + 48))
	application.SetRune(1, 1, rune(hour % 10 + 48))
	application.SetRune(2, 1, ':')
	application.SetRune(3, 1, rune(minute / 10 + 48))
	application.SetRune(4, 1, rune(minute % 10 + 48))
	application.SetRune(5, 1, ':')
	application.SetRune(6, 1, rune(second / 10 + 48))
	application.SetRune(7, 1, rune(second % 10 + 48))
	
	application.Draw()
}

func tick () {
	for {
		tickPing <- struct { } { }
		time.Sleep(time.Second)
	}
}