Example #1
0
func (ms Monitors) Init(e *Euclid, x XHandle) (bool, bool) {
	var rr, xn bool
	c := x.Conn()

	err := randr.Init(c)
	if err == nil && ms.Update(e, x, false, false, false) {
		rr = true
		randr.SelectInputChecked(c, x.Root(), randr.NotifyMaskScreenChange)
	} else {
		rr = false
		err = xinerama.Init(c)
		if err == nil {
			xia, err := xinerama.IsActive(c).Reply()
			if xia != nil && err == nil {
				xn = true
				xsq, _ := xinerama.QueryScreens(c).Reply()
				xsi := xsq.ScreenInfo
				for i := 0; i < len(xsi); i++ {
					info := xsi[i]
					rect := xproto.Rectangle{info.XOrg, info.YOrg, info.Width, info.Height}
					ms.Add(e, x, rect)
				}
			} else {
				s := x.Screen()
				rect := xproto.Rectangle{0, 0, s.WidthInPixels, s.HeightInPixels}
				ms.Add(e, x, rect)
			}
		}
	}
	return rr, xn
}
Example #2
0
func subscribeXEvents(ch chan<- Event, done <-chan struct{}) {
	X, err := xgb.NewConn()
	if err != nil {
		ch <- Event{Error: err}
		return
	}

	defer X.Close()
	if err = randr.Init(X); err != nil {
		ch <- Event{Error: err}
		return
	}

	root := xproto.Setup(X).DefaultScreen(X).Root

	eventMask := randr.NotifyMaskScreenChange |
		randr.NotifyMaskCrtcChange |
		randr.NotifyMaskOutputChange |
		randr.NotifyMaskOutputProperty

	err = randr.SelectInputChecked(X, root, uint16(eventMask)).Check()
	if err != nil {
		ch <- Event{Error: err}
		return
	}

	for {
		ev, err := X.WaitForEvent()
		select {
		case ch <- Event{Event: ev, Error: err}:
		case <-time.After(eventSendTimeout):
			continue
		case <-done:
			return
		}
		if err != nil {
			log.Fatal(err)
		}
	}
}
Example #3
0
func main() {
	X, _ := xgb.NewConn()

	// Every extension must be initialized before it can be used.
	err := randr.Init(X)
	if err != nil {
		log.Fatal(err)
	}

	// Get the root window on the default screen.
	root := xproto.Setup(X).DefaultScreen(X).Root

	// Gets the current screen resources. Screen resources contains a list
	// of names, crtcs, outputs and modes, among other things.
	resources, err := randr.GetScreenResources(X, root).Reply()
	if err != nil {
		log.Fatal(err)
	}

	// Iterate through all of the outputs and show some of their info.
	for _, output := range resources.Outputs {
		info, err := randr.GetOutputInfo(X, output, 0).Reply()
		if err != nil {
			log.Fatal(err)
		}

		bestMode := info.Modes[0]
		for _, mode := range resources.Modes {
			if mode.Id == uint32(bestMode) {
				fmt.Printf("Width: %d, Height: %d\n", mode.Width, mode.Height)
			}
		}
	}

	fmt.Println("\n")

	// Iterate through all of the crtcs and show some of their info.
	for _, crtc := range resources.Crtcs {
		info, err := randr.GetCrtcInfo(X, crtc, 0).Reply()
		if err != nil {
			log.Fatal(err)
		}
		fmt.Printf("X: %d, Y: %d, Width: %d, Height: %d\n",
			info.X, info.Y, info.Width, info.Height)
	}

	// Tell RandR to send us events. (I think these are all of them, as of 1.3.)
	err = randr.SelectInputChecked(X, root,
		randr.NotifyMaskScreenChange|
			randr.NotifyMaskCrtcChange|
			randr.NotifyMaskOutputChange|
			randr.NotifyMaskOutputProperty).Check()
	if err != nil {
		log.Fatal(err)
	}

	// Listen to events and just dump them to standard out.
	// A more involved approach will have to read the 'U' field of
	// RandrNotifyEvent, which is a union (really a struct) of type
	// RanrNotifyDataUnion.
	for {
		ev, err := X.WaitForEvent()
		if err != nil {
			log.Fatal(err)
		}
		fmt.Println(ev)
	}
}