// nameSet will set the name of the window and emit a benign message to
// verbose output if it fails.
func (w *window) nameSet(name string) {
	// Set _NET_WM_NAME so it looks nice.
	err := ewmh.WmNameSet(w.X, w.Id, fmt.Sprintf("imgv :: %s", name))
	if err != nil { // not a fatal error
		lg("Could not set _NET_WM_NAME: %s", err)
	}
}

func (w *Window) SetTitle(title string) {
	if w.closed {
		return
	}
	err := ewmh.WmNameSet(w.xu, w.win.Id, title)
	if err != nil {
		// TODO: log
	}
	return
}

// This is a slightly modified version of xgraphics.XShowExtra that does
// not set any resize constraints on the window (so that it can go
// fullscreen).
func showImage(im *xgraphics.Image, name string, quit bool) *xwindow.Window {
	if len(name) == 0 {
		name = "xgbutil Image Window"
	}
	w, h := im.Rect.Dx(), im.Rect.Dy()

	win, err := xwindow.Generate(im.X)
	if err != nil {
		xgbutil.Logger.Printf("Could not generate new window id: %s", err)
		return nil
	}

	// Create a very simple window with dimensions equal to the image.
	win.Create(im.X.RootWin(), 0, 0, w, h, 0)

	// Make this window close gracefully.
	win.WMGracefulClose(func(w *xwindow.Window) {
		xevent.Detach(w.X, w.Id)
		keybind.Detach(w.X, w.Id)
		mousebind.Detach(w.X, w.Id)
		w.Destroy()

		if quit {
			xevent.Quit(w.X)
		}
	})

	// Set WM_STATE so it is interpreted as a top-level window.
	err = icccm.WmStateSet(im.X, win.Id, &icccm.WmState{
		State: icccm.StateNormal,
	})
	if err != nil { // not a fatal error
		xgbutil.Logger.Printf("Could not set WM_STATE: %s", err)
	}

	// Set _NET_WM_NAME so it looks nice.
	err = ewmh.WmNameSet(im.X, win.Id, name)
	if err != nil { // not a fatal error
		xgbutil.Logger.Printf("Could not set _NET_WM_NAME: %s", err)
	}

	// Paint our image before mapping.
	im.XSurfaceSet(win.Id)
	im.XDraw()
	im.XPaint(win.Id)

	// Now we can map, since we've set all our properties.
	// (The initial map is when the window manager starts managing.)
	win.Map()

	return win
}

func setSupported() {
	// See COMPLIANCE for what's supported and what isn't (plus rationale).
	// ewmhSupported comes from ewmh_supported.go and is automatically
	// generated from the COMPLIANCE file.

	// Set supported atoms
	ewmh.SupportedSet(wm.X, ewmhSupported)

	// While we're at it, set the supporting wm hint too.
	ewmh.SupportingWmCheckSet(wm.X, wm.X.RootWin(), wm.X.Dummy())
	ewmh.SupportingWmCheckSet(wm.X, wm.X.Dummy(), wm.X.Dummy())
	ewmh.WmNameSet(wm.X, wm.X.Dummy(), "Wingo")
}

// setName will set the name of the window
func (w *Window) setName(name string) {
	err := ewmh.WmNameSet(w.X, w.Id, "vimg :: "+name)
	if err != nil { // not a fatal error
		lg("Could not set _NET_WM_NAME: %s", err)
	}
}

func main() {
	X, Xerr = xgbutil.NewConn()
	if Xerr != nil {
		panic(Xerr)
	}

	active, _ := ewmh.ActiveWindowGet(X)

	parent, _ := xwindow.ParentWindow(X, active)
	actOpacity, _ := ewmh.WmWindowOpacityGet(X, parent)
	fmt.Printf("Opacity for active window: %f\n", actOpacity)

	showDesk, _ := ewmh.ShowingDesktopGet(X)
	fmt.Printf("Showing desktop? %v\n", showDesk)

	wmName, err := ewmh.GetEwmhWM(X)
	if err != nil {
		fmt.Printf("No conforming window manager found... :-(\n")
		fmt.Println(err)
	} else {
		fmt.Printf("Window manager: %s\n", wmName)
	}

	pager := xproto.Window(0x160001e)
	middle := xproto.Window(0x3200016)
	geom, _ := ewmh.DesktopGeometryGet(X)
	desktops, _ := ewmh.DesktopNamesGet(X)
	curdesk, _ := ewmh.CurrentDesktopGet(X)
	clients, _ := ewmh.ClientListGet(X)
	activeName, _ := ewmh.WmNameGet(X, active)

	fmt.Printf("Active window: %x\n", active)
	fmt.Printf("Current desktop: %d\n", curdesk)
	fmt.Printf("Client list: %v\n", clients)
	fmt.Printf("Desktop geometry: (width: %d, height: %d)\n",
		geom.Width, geom.Height)
	fmt.Printf("Active window name: %s\n", activeName)
	fmt.Printf("Desktop names: %s\n", desktops)

	var desk string
	if curdesk < len(desktops) {
		desk = desktops[curdesk]
	} else {
		desk = string(curdesk)
	}
	fmt.Printf("Current desktop: %s\n", desk)

	// fmt.Printf("\nChanging current desktop to 25 from %d\n", curdesk)
	ewmh.CurrentDesktopSet(X, curdesk)
	// fmt.Printf("Current desktop is now: %d\n", ewmh.CurrentDesktop(X))

	fmt.Printf("Setting active win to %x\n", middle)
	// ewmh.ActiveWindowReq(X, middle)

	rand.Seed(int64(time.Now().Nanosecond()))
	randStr := make([]byte, 20)
	for i, _ := range randStr {
		if rf := rand.Float32(); rf < 0.40 {
			randStr[i] = byte('a' + rand.Intn('z'-'a'))
		} else if rf < 0.80 {
			randStr[i] = byte('A' + rand.Intn('Z'-'A'))
		} else {
			randStr[i] = ' '
		}
	}

	ewmh.WmNameSet(X, active, string(randStr))
	newName, _ := ewmh.WmNameGet(X, active)
	fmt.Printf("New name: %s\n", newName)

	// deskNames := ewmh.DesktopNamesGet(X)
	// fmt.Printf("Desktop names: %s\n", deskNames)
	// deskNames[len(deskNames) - 1] = "xgbutil"
	// ewmh.DesktopNamesSet(X, deskNames)
	// fmt.Printf("Desktop names: %s\n", ewmh.DesktopNamesGet(X))

	supported, _ := ewmh.SupportedGet(X)
	fmt.Printf("Supported hints: %v\n", supported)
	fmt.Printf("Setting supported hints...\n")
	ewmh.SupportedSet(X, []string{"_NET_CLIENT_LIST", "_NET_WM_NAME",
		"_NET_WM_DESKTOP"})

	numDesks, _ := ewmh.NumberOfDesktopsGet(X)
	fmt.Printf("Number of desktops: %d\n", numDesks)
	// ewmh.NumberOfDesktopsReq(X.EwmhNumberOfDesktops(X) + 1)
	// time.Sleep(time.Second)
	// fmt.Printf("Number of desktops: %d\n", ewmh.NumberOfDesktops(X))

	viewports, _ := ewmh.DesktopViewportGet(X)
	fmt.Printf("Viewports (%d): %v\n", len(viewports), viewports)

	// viewports[2].X = 50
	// viewports[2].Y = 293
	// ewmh.DesktopViewportSet(X, viewports)
	// time.Sleep(time.Second)
	//
	// viewports = ewmh.DesktopViewport(X)
	// fmt.Printf("Viewports (%d): %v\n", len(viewports), viewports)

	// ewmh.CurrentDesktopReq(X, 3)
//.........这里部分代码省略.........

func makeWindow(ximage *xgraphics.Image) (*xwindow.Window, *bool) {
	w, h := ximage.Rect.Dx(), ximage.Rect.Dy()

	window, err := xwindow.Generate(ximage.X)
	if err != nil {
		xgbutil.Logger.Printf("Could not generate new window id: %s", err)
		return nil, nil
	}

	window.Create(ximage.X.RootWin(), 0, 0, w, h, xproto.CwBackPixel, 0x00000000)
	window.Listen(xproto.EventMaskExposure,
		xproto.EventMaskKeyPress,
		xproto.EventMaskStructureNotify,
		xproto.EventMaskVisibilityChange)

	window.WMGracefulClose(func(w *xwindow.Window) {
		xevent.Detach(w.X, w.Id)
		keybind.Detach(w.X, w.Id)
		mousebind.Detach(w.X, w.Id)
		w.Destroy()
		xevent.Quit(w.X)
	})

	err = icccm.WmStateSet(ximage.X, window.Id, &icccm.WmState{
		State: icccm.StateNormal,
	})
	if err != nil {
		xgbutil.Logger.Printf("Could not set WM_STATE: %s", err)
	}

	err = ewmh.WmNameSet(ximage.X, window.Id, "Computer System Monitor")
	if err != nil {
		xgbutil.Logger.Printf("Could not set _NET_WM_NAME: %s", err)
	}

	err = keybind.KeyPressFun(
		func(X *xgbutil.XUtil, ev xevent.KeyPressEvent) {
			err := ewmh.WmStateReq(ximage.X, window.Id, ewmh.StateToggle,
				"_NET_WM_STATE_FULLSCREEN")
			if err != nil {
				log.Fatal(err)
			}
		}).Connect(ximage.X, window.Id, "f", false)
	if err != nil {
		log.Fatal(err)
	}

	xevent.ExposeFun(
		func(xu *xgbutil.XUtil, event xevent.ExposeEvent) {
			ximage.XExpPaint(window.Id, 0, 0)
		}).Connect(ximage.X, window.Id)

	obscured := false
	xevent.VisibilityNotifyFun(
		func(xu *xgbutil.XUtil, event xevent.VisibilityNotifyEvent) {
			obscured = event.State == xproto.VisibilityFullyObscured
		}).Connect(ximage.X, window.Id)

	window.Map()

	return window, &obscured
}

func (wingo *wingoState) ewmhSupportingWmCheck() {
	supportingWin := xwindow.Must(xwindow.Create(X, wingo.root.Id))
	ewmh.SupportingWmCheckSet(X, wingo.root.Id, supportingWin.Id)
	ewmh.SupportingWmCheckSet(X, supportingWin.Id, supportingWin.Id)
	ewmh.WmNameSet(X, supportingWin.Id, "Wingo")
}

// Set the window title.
func (plot *PlotWindow) SetTitle(Title string) {
	ewmh.WmNameSet(system.X, plot.window.Id, Title)
}