package main import ( "github.com/gdamore/tcell/v2" "log" ) func drawText(s tcell.Screen, x1, y1, x2, y2 int, style tcell.Style, text string) { row := y1 col := x1 for _, r := range []rune(text) { s.SetContent(col, row, r, nil, style) col++ if col >= x2 { row++ col = x1 } if row > y2 { break } } } func drawBox(s tcell.Screen, x1, y1, x2, y2 int, style tcell.Style, text string) { if y2 < y1 { y1, y2 = y2, y1 } if x2 < x1 { x1, x2 = x2, x1 } // Fill background for row := y1; row <= y2; row++ { for col := x1; col <= x2; col++ { s.SetContent(col, row, ' ', nil, style) } } // Draw borders for col := x1; col <= x2; col++ { s.SetContent(col, y1, '═', nil, style) s.SetContent(col, y2, '═', nil, style) } for row := y1 + 1; row < y2; row++ { s.SetContent(x1, row, '║', nil, style) s.SetContent(x2, row, '║', nil, style) } // Only draw corners if necessary if y1 != y2 && x1 != x2 { s.SetContent(x1, y1, '╔', nil, style) s.SetContent(x2, y1, '╗', nil, style) s.SetContent(x1, y2, '╚', nil, style) s.SetContent(x2, y2, '╝', nil, style) } drawText(s, x1+1, y1+1, x2-1, y2-1, style, text) } func main() { // info, err := tcell.LookupTerminfo(os.Getenv("TERM")) defStyle := tcell.StyleDefault.Background(tcell.ColorReset).Foreground(tcell.ColorReset) //boxStyle := tcell.StyleDefault.Foreground(tcell.ColorWhite).Background(tcell.ColorPurple) var err error screen, err := tcell.NewScreen() if err != nil { log.Println("Error creating screen: ", err) } err = screen.Init() if err != nil { log.Fatalln("Error initializing screen: ", err) } x, y := screen.Size() screen.Clear() drawBox(screen, 0, 0, x-1, y-1, defStyle, "There should be worms here!") quit := func() { // You have to catch panics in a defer, clean up, and // re-raise them - otherwise your application can // die without leaving any diagnostic trace. maybePanic := recover() screen.Fini() if maybePanic != nil { panic(maybePanic) } } defer quit() for { screen.Show() ev := screen.PollEvent() switch ev := ev.(type) { case *tcell.EventResize: x, y := screen.Size() drawBox(screen, 0, 0, x-1, y-1, defStyle, "There should be worms here!") screen.Sync() case *tcell.EventKey: //fmt.Println("Key: ",ev.Rune()) if ev.Key() == tcell.KeyEscape || ev.Key() == tcell.KeyCtrlC { return } else if ev.Rune() == 'q' { return } else if ev.Key() == tcell.KeyCtrlL { screen.Sync() } else if ev.Rune() == 'C' || ev.Rune() == 'c' { screen.Clear() } } } }