wartank/desktop/win_main/frm_status/frm_status.go

// package frm_status -- статусная панель
package frm_status

import (
	"time"

	tk "modernc.org/tk9.0"
)

type FrmStatus struct {
	winMain *tk.Window
	lblLive *tk.LabelWidget
	strLive string
}

func NewFrmStatus() *FrmStatus {
	sf := &FrmStatus{
		winMain: tk.App,
	}
	frmStatus := sf.winMain.Frame(tk.Border(1), tk.Relief(tk.SUNKEN))
	tk.Pack(frmStatus, tk.Fill(tk.FILL_X), tk.Side(tk.BOTTOM))

	fontLive := tk.Font("Courier")
	sf.lblLive = frmStatus.Label(tk.Txt(sf.strLive),
		tk.Relief(tk.RAISED),
		tk.Background(tk.Yellow),
		fontLive,
	)
	tk.Pack(sf.lblLive, tk.Side(tk.LEFT))

	lblSeparator0 := frmStatus.Label(tk.Txt("   "))
	tk.Pack(lblSeparator0, tk.Side(tk.LEFT))
	sf.strLive = "[|]"
	sf.liveUpdate()
	return sf
}

func (sf *FrmStatus) liveUpdate() {
	switch sf.strLive {
	case "[|]":
		sf.strLive = "[/]"
	case "[/]":
		sf.strLive = "[-]"
	case "[-]":
		sf.strLive = "[\\]"
	case "[\\]":
		sf.strLive = "[|]"
	}
	sf.lblLive.Configure(tk.Txt(sf.strLive))
	tk.TclAfter(time.Millisecond*250, sf.liveUpdate)
}