Exemplo n.º 1
0
func NewInput(X *xgbutil.XUtil, theme *InputTheme, config InputConfig) *Input {
	input := &Input{
		X:       X,
		theme:   theme,
		config:  config,
		showing: false,
		do:      nil,
		history: make([]string, 0, 100),
	}

	// Create all windows used for the base of the input prompt.
	cwin := func(p xproto.Window) *xwindow.Window {
		return xwindow.Must(xwindow.Create(X, p))
	}
	input.win = cwin(X.RootWin())
	input.label = cwin(input.win.Id)
	input.input = text.NewInput(X, input.win.Id, 1000, theme.Padding,
		theme.Font, theme.FontSize, theme.FontColor, theme.BgColor)
	input.bInp = cwin(input.win.Id)
	input.bTop, input.bBot = cwin(input.win.Id), cwin(input.win.Id)
	input.bLft, input.bRht = cwin(input.win.Id), cwin(input.win.Id)

	// Make the top-level window override redirect so the window manager
	// doesn't mess with us.
	input.win.Change(xproto.CwOverrideRedirect, 1)
	input.win.Listen(xproto.EventMaskFocusChange)
	input.input.Listen(xproto.EventMaskKeyPress)

	// Colorize the windows.
	cclr := func(w *xwindow.Window, clr render.Color) {
		w.Change(xproto.CwBackPixel, clr.Uint32())
	}
	cclr(input.win, input.theme.BgColor)
	cclr(input.bInp, input.theme.BorderColor)
	cclr(input.bTop, input.theme.BorderColor)
	cclr(input.bBot, input.theme.BorderColor)
	cclr(input.bLft, input.theme.BorderColor)
	cclr(input.bRht, input.theme.BorderColor)

	// Map the sub-windows once.
	input.label.Map()
	input.input.Map()
	input.bInp.Map()
	input.bTop.Map()
	input.bBot.Map()
	input.bLft.Map()
	input.bRht.Map()

	// Connect the key response handler.
	// The handler is responsible for tab completion and quitting if the
	// cancel key has been pressed.
	input.keyResponse().Connect(X, input.input.Id)
	input.focusResponse().Connect(X, input.win.Id)

	return input
}
Exemplo n.º 2
0
func main() {
	X, err := xgbutil.NewConn()
	fatal(err)

	// Remember to always initialize the keybind package before usage.
	keybind.Initialize(X)

	// We create a benign parent window. Its only value in this example is
	// instructional. In particular, it shows how to have a sub-window get
	// focus using the ICCCM WM_TAKE_FOCUS protocol. (Since by default,
	// the window manager will assign focus to your top-level window.)
	// The real magic happens below with the WMTakeFocus method call.
	parentWin, err := xwindow.Create(X, X.RootWin())
	fatal(err)

	// NewInput creates a new input window and handles all of the text drawing
	// for you. It can be any width, but the height will be automatically
	// determined by the height extents of the font size chosen.
	input := text.NewInput(X, parentWin.Id, width, padding, font, fontSize,
		fontColor, bgColor)
	parentWin.Resize(input.Geom.Width(), input.Geom.Height())

	// Make sure X reports KeyPress events when this window is focused.
	input.Listen(xproto.EventMaskKeyPress)

	// Listen to KeyPress events. If it's a BackSpace, remove the last
	// character in the input box. If it's "Return" quit. If it's "Escape",
	// clear the input box.
	// Otherwise, try to add the key pressed to the input box.
	// (Not all key presses correspond to a single character that is added.)
	xevent.KeyPressFun(
		func(X *xgbutil.XUtil, ev xevent.KeyPressEvent) {
			mods, kc := ev.State, ev.Detail
			switch {
			case keybind.KeyMatch(X, "BackSpace", mods, kc):
				input.Remove()
			case keybind.KeyMatch(X, "Return", mods, kc):
				log.Println("Return has been pressed.")
				log.Printf("The current text is: %s", string(input.Text))
				log.Println("Quitting...")
				xevent.Quit(X)
			case keybind.KeyMatch(X, "Escape", mods, kc):
				input.Reset()
			default:
				input.Add(mods, kc)
			}
		}).Connect(X, input.Id)

	// Implement the WM_DELETE_WINDOW protocol.
	parentWin.WMGracefulClose(func(w *xwindow.Window) {
		xevent.Quit(X)
	})

	// Implement the WM_TAKE_FOCUS protocol. The callback function provided
	// is executed when a valid WM_TAKE_FOCUS ClientMessage event has been
	// received from the window manager.
	// According to ICCCM Section 4.2.7, this is one of the three valid ways
	// of setting input focus to a sub-window. (It's also easiest since it
	// doesn't require us to monitor FocusChange events. EW.)
	// If you have multiple sub-windows that can be focused, this callback
	// function is where the logic would go to pick which sub-window should
	// be focused upon receipt of a WM_TAKE_FOCUS message.
	parentWin.WMTakeFocus(func(w *xwindow.Window, tstamp xproto.Timestamp) {
		input.FocusParent(tstamp)
	})

	// Map the window and start the main X event loop.
	input.Map()
	parentWin.Map()
	xevent.Main(X)
}