no public Surface interface impl

Question

function:

go
func NewPainter(s Surface, p *Theme) *Painter

need Surface interface param, but the interface Surface:

go
type Surface interface {
    SetCell(x, y int, ch rune, s Style)
    SetCursor(x, y int)
    HideCursor()
    Begin()
    End()
    Size() image.Point
}

has the only one impl:

go
type tcellSurface struct {
    screen tcell.Screen
}

and that cannot got outside the tui package

so, how to use NewPainter?

该提问来源于开源项目：marcusolsson/tui-go

Answer 1

by the way , i try to make a chatroom app.

and i add the new message to message quene , and then render the new message to ui,

but , i must press tab or other key to create a event to go to the follow code:

go
func (ui *tcellUI) handleEvent(ev event) {
    switch e := ev.(type) {
    case KeyEvent:
        logger.Printf("Received key event: %s", e.Name())

        for _, b := range ui.keybindings {
            if b.match(e) {
                b.handler()
            }
        }
        ui.kbFocus.OnKeyEvent(e)
        ui.root.OnKeyEvent(e)
        ui.painter.Repaint(ui.root)
    case callbackEvent:
        // Gets stuck in a print loop when the logger is a widget.
        //logger.Printf("Received callback event")
        e.cbFn()
        ui.painter.Repaint(ui.root)
    case paintEvent:
        logger.Printf("Received paint event")
        ui.painter.Repaint(ui.root)
    }
}

in this code, ui.painter.Repaint(ui.root) will repaint the ui , and i need it.

but i have not found a way to use it.

if you know , please let me knoe.

thank you very much.