func newWindow(X *xgbutil.XUtil) {
win, err := xwindow.Generate(X)
if err != nil {
log.Fatal(err)
}
win.Create(X.RootWin(), 0, 0, 200, 200,
xproto.CwBackPixel|xproto.CwEventMask,
0, xproto.EventMaskButtonRelease)
win.WMGracefulClose(
func(w *xwindow.Window) {
xevent.Detach(w.X, w.Id)
mousebind.Detach(w.X, w.Id)
w.Destroy()
xevent.Quit(X)
Done <- true
})
win.Map()
err = mousebind.ButtonReleaseFun(
func(X *xgbutil.XUtil, ev xevent.ButtonReleaseEvent) {
newWindow(X)
}).Connect(X, win.Id, "1", false, false)
if err != nil {
log.Fatal(err)
}
}
// _NET_DESKTOP_LAYOUT set
func DesktopLayoutSet(xu *xgbutil.XUtil, orientation, columns, rows,
startingCorner uint) error {
return xprop.ChangeProp32(xu, xu.RootWin(), "_NET_DESKTOP_LAYOUT",
"CARDINAL", orientation, columns, rows,
startingCorner)
}
// RootGeometry gets the geometry of the root window. It will panic on failure.
func RootGeometry(xu *xgbutil.XUtil) xrect.Rect {
geom, err := RawGeometry(xu, xproto.Drawable(xu.RootWin()))
if err != nil {
panic(err)
}
return geom
}
// compose a number of rectabgles into a window shape
func ComposeShape(X *xgbutil.XUtil, dst xproto.Window, rects []xrect.Rect) (err error) {
combine_bounds := make([]shape.CombineCookie, len(rects))
combine_clip := make([]shape.CombineCookie, len(rects))
var operation shape.Op
for i, rect := range rects {
// make rectangular window of correct goemetry
win, err := xwindow.Generate(X)
if err != nil {
log.Fatalf("ComposeShape: Error creating rectange %v window.", rect)
return err
}
win.Create(X.RootWin(), rect.X(), rect.Y(), rect.Width(), rect.Height(), xproto.CwBackPixel, 0xffffff)
// choose operation. on the first one, we want to set the shape.
if i == 0 {
operation = shape.SoSet
} else {
operation = shape.SoUnion
}
// combine window request
x, y := int16(rect.X()), int16(rect.Y())
combine_kind := shape.Kind(shape.SkBounding)
combine_bounds[i] = shape.CombineChecked(X.Conn(), operation, combine_kind, combine_kind, dst, x, y, win.Id)
combine_kind = shape.Kind(shape.SkClip)
combine_clip[i] = shape.CombineChecked(X.Conn(), operation, combine_kind, combine_kind, dst, x, y, win.Id)
}
return nil
}
// New allocates and initializes a new DockApp. NewDockApp does not initialize
// the window contents and does not map the window to the display screen. The
// window is mapped to the screen when the Main method is called on the
// returned DockApp.
func New(x *xgbutil.XUtil, rect image.Rectangle) (*DockApp, error) {
win, err := xwindow.Generate(x)
if err != nil {
log.Fatalf("generate window: %v", err)
}
win.Create(x.RootWin(), 0, 0, rect.Size().X, rect.Size().Y, 0)
// Set WM hints so that Openbox puts the window into the dock.
hints := &icccm.Hints{
Flags: icccm.HintState | icccm.HintIconWindow,
InitialState: icccm.StateWithdrawn,
IconWindow: win.Id,
WindowGroup: win.Id,
}
err = icccm.WmHintsSet(x, win.Id, hints)
if err != nil {
win.Destroy()
return nil, fmt.Errorf("wm hints: %v", err)
}
img := xgraphics.New(x, rect)
err = img.XSurfaceSet(win.Id)
if err != nil {
img.Destroy()
win.Destroy()
return nil, fmt.Errorf("xsurface set: %v", err)
}
app := &DockApp{
x: x,
img: img,
win: win,
}
return app, nil
}
func newParent(X *xgbutil.XUtil, cid xproto.Window) (*Parent, error) {
parent, err := xwindow.Generate(X)
if err != nil {
logger.Error.Printf("Could not create a parent window for client "+
"with id '%d' because: %s", cid, err)
logger.Error.Fatalf("In a state where no new windows can be created. " +
"Unfortunately, we must exit.")
}
err = parent.CreateChecked(X.RootWin(), 0, 0, 1, 1,
xproto.CwEventMask,
xproto.EventMaskSubstructureRedirect|
xproto.EventMaskButtonPress|xproto.EventMaskButtonRelease)
if err != nil {
return nil, err
}
err = xproto.ReparentWindowChecked(X.Conn(),
cid, parent.Id, 0, 0).Check()
if err != nil {
return nil, err
}
return &Parent{parent}, nil
}
func newWindow(controlCh *controlCh, X *xgbutil.XUtil, width, height int) *xwindow.Window {
var (
err error
win *xwindow.Window
)
win, err = xwindow.Generate(X)
if err != nil {
panic(err)
}
win.Create(X.RootWin(), 0, 0, width, height,
xproto.CwBackPixel|xproto.CwEventMask,
0, xproto.EventMaskButtonRelease)
// Xorg application exits when the window is closed.
win.WMGracefulClose(
func(w *xwindow.Window) {
xevent.Detach(w.X, w.Id)
mousebind.Detach(w.X, w.Id)
w.Destroy()
xevent.Quit(X)
controlCh.exit <- true
})
// In order to get ConfigureNotify events, we must listen to the window
// using the 'StructureNotify' mask.
win.Listen(xproto.EventMaskButtonPress |
xproto.EventMaskButtonRelease |
xproto.EventMaskKeyPress |
xproto.EventMaskKeyRelease |
xproto.EventMaskStructureNotify)
win.Map()
return win
}
// find the EWHM window under the mouse cursor
func FindManagedWindowUnderMouse(X *xgbutil.XUtil) (xproto.Window, error) {
// construct a hashset of the managed windows
clients, err := ewmh.ClientListGet(X)
if err != nil {
return 0, fmt.Errorf("FindUnderMouse: could not retrieve EWHM client list: %v", err)
}
managed := make(map[xproto.Window]bool, len(clients))
for _, win := range clients {
managed[win] = true
}
cur_window := X.RootWin()
// descend the QueryTree to the first child that is a EWMH managed window
for {
// return the parent if it is an EWHM window
if _, ok := managed[cur_window]; ok {
return cur_window, nil
}
cur_window, _, err = FindNextUnderMouse(X, cur_window)
if err != nil {
break
}
}
// we didn't find the window :(
return 0, errors.New("FindUnderMouse: no EWMH window found under mouse")
}
func newAudio(Xu *xgbutil.XUtil) (*audio, error) {
m, err := OpenMixer()
if err != nil {
return nil, err
}
defer func() {
// set m to nil on final success
if m != nil {
_ = m.Close()
}
}()
a := &audio{
mixer: m,
}
for _, k := range []struct {
key string
fn keybind.KeyPressFun
}{
{"XF86AudioRaiseVolume", a.up},
{"XF86AudioLowerVolume", a.down},
{"XF86AudioMute", a.mute},
} {
if err := k.fn.Connect(Xu, Xu.RootWin(), k.key, true); err != nil {
return nil, err
}
}
m = nil
return a, nil
}
func newWindow(X *xgbutil.XUtil, width, height int) *xwindow.Window {
var (
err error
win *xwindow.Window
)
win, err = xwindow.Generate(X)
if err != nil {
log.Fatal(err)
}
win.Create(X.RootWin(), 0, 0, width, height,
xproto.CwBackPixel|xproto.CwEventMask,
0, xproto.EventMaskButtonRelease)
win.WMGracefulClose(
func(w *xwindow.Window) {
xevent.Detach(w.X, w.Id)
mousebind.Detach(w.X, w.Id)
w.Destroy()
xevent.Quit(X)
})
win.Map()
if err != nil {
log.Fatal(err)
}
return win
}
// When a cross is declared in its object literal form, it may not have the appropriate window.
// this function creates a new X11 window for the cross with the correct geometry depending
// on its Icon* parameters.
func (c *Cross) CreateWindow(X *xgbutil.XUtil, icons_per_direction int, bg_color uint32) (*xwindow.Window, error) {
// calculate the dimensions of the spars of our cross +
// width/height reflect the vertical-orientation rectangle
width := c.IconMargin*2 + c.IconSize
// padding between the icons, margin on the edges
height := c.IconSize*icons_per_direction + c.IconPadding*(icons_per_direction-1) + c.IconMargin*2
// intitialize a basic window for the cross
win, err := xwindow.Generate(X)
if err != nil {
return nil, err
}
win.Create(X.RootWin(), 0, 0, height, height,
xproto.CwBackPixel|xproto.CwOverrideRedirect, bg_color, 1)
// the rects we will be adding together to form the shape of the cross
vert := xrect.New(0, 0, width, height)
horiz := xrect.New(0, 0, height, width)
struts := []xrect.Rect{vert, horiz}
geom, err := win.Geometry()
if err != nil {
return nil, err
}
// center struts over window
x, y := util.CenterChild(vert, geom)
vert.XSet(x)
vert.YSet(y)
x, y = util.CenterChild(horiz, geom)
horiz.XSet(x)
horiz.YSet(y)
// build the cross shape from our friendly rectangles
err = ComposeShape(X, win.Id, struts)
if err != nil {
return nil, err
}
// add the window to our cross struct
c.Window = win
// create icons from our images
clr := RGB(bg_color)
if c.imagesToBecomeIcons != nil {
icons := make(map[string]*Icon, len(c.imagesToBecomeIcons))
for name, img := range c.imagesToBecomeIcons {
icon := NewIcon(X, img, win.Id)
icon.Background = clr
icons[name] = icon
}
c.Icons = icons
} else {
return nil, errors.New("Cross: you must create crosses using the NewCross function (this cross has now iconsToBecomeImage)")
}
return win, nil
}
func keyHandlers(X *xgbutil.XUtil,
cycle *prompt.Cycle, items []*prompt.CycleItem) {
geom := headGeom(X)
keybind.KeyPressFun(
func(X *xgbutil.XUtil, ev xevent.KeyPressEvent) {
shown := cycle.Show(geom, cycleNext, items)
if !shown {
log.Fatal("Did not show cycle prompt.")
}
cycle.Next()
}).Connect(X, X.RootWin(), cycleNext, true)
keybind.KeyPressFun(
func(X *xgbutil.XUtil, ev xevent.KeyPressEvent) {
cycle.Next()
}).Connect(X, cycle.GrabId(), cycleNext, true)
keybind.KeyPressFun(
func(X *xgbutil.XUtil, ev xevent.KeyPressEvent) {
shown := cycle.Show(geom, cyclePrev, items)
if !shown {
log.Fatal("Did not show cycle prompt.")
}
cycle.Prev()
}).Connect(X, X.RootWin(), cyclePrev, true)
keybind.KeyPressFun(
func(X *xgbutil.XUtil, ev xevent.KeyPressEvent) {
cycle.Prev()
}).Connect(X, cycle.GrabId(), cyclePrev, true)
}
func bind(Xu *xgbutil.XUtil, bindings ...binding) error {
for _, k := range bindings {
if err := k.fn.Connect(Xu, Xu.RootWin(), k.key, true); err != nil {
return err
}
}
return nil
}
// sendClientMessages is a goroutine that sends client messages to the root
// window. We then listen to them later as a demonstration of responding to
// X events. (They are sent with SubstructureNotify and SubstructureRedirect
// masks set. So in order to receive them, we'll have to explicitly listen
// to events of that type on the root window.)
func xSource(X *xgbutil.XUtil) {
i := 1
for {
ewmh.ClientEvent(X, X.RootWin(), "NOOP", i)
i++
time.Sleep(200 * time.Millisecond)
}
}
// _NET_DESKTOP_GEOMETRY get
func DesktopGeometryGet(xu *xgbutil.XUtil) (*DesktopGeometry, error) {
geom, err := xprop.PropValNums(xprop.GetProperty(xu, xu.RootWin(),
"_NET_DESKTOP_GEOMETRY"))
if err != nil {
return nil, err
}
return &DesktopGeometry{Width: int(geom[0]), Height: int(geom[1])}, nil
}
// _NET_DESKTOP_NAMES set
func DesktopNamesSet(xu *xgbutil.XUtil, names []string) error {
nullterm := make([]byte, 0)
for _, name := range names {
nullterm = append(nullterm, name...)
nullterm = append(nullterm, 0)
}
return xprop.ChangeProp(xu, xu.RootWin(), 8, "_NET_DESKTOP_NAMES",
"UTF8_STRING", nullterm)
}
// _NET_SUPPORTED set
// This will create any atoms in the argument if they don't already exist.
func SupportedSet(xu *xgbutil.XUtil, atomNames []string) error {
atoms, err := xprop.StrToAtoms(xu, atomNames)
if err != nil {
return err
}
return xprop.ChangeProp32(xu, xu.RootWin(), "_NET_SUPPORTED", "ATOM",
atoms...)
}
// _NET_SHOWING_DESKTOP req
func ShowingDesktopReq(xu *xgbutil.XUtil, show bool) error {
var showInt uint
if show {
showInt = 1
} else {
showInt = 0
}
return ClientEvent(xu, xu.RootWin(), "_NET_SHOWING_DESKTOP", showInt)
}
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
}
func (hotkey Hotkey) attach(X *xgbutil.XUtil) {
log.Println(hotkey.Key)
err := keybind.KeyPressFun(
func(X *xgbutil.XUtil, e xevent.KeyPressEvent) {
go exec.Command("/bin/sh", "-c", hotkey.Cmd).Run()
}).Connect(X, X.RootWin(), hotkey.Key, true)
if err != nil {
log.Fatalf("Could not bind %s: %s", hotkey.Key, err.Error())
}
}
// _NET_WM_HANDLED_ICONS set
func WmHandledIconsSet(xu *xgbutil.XUtil, handle bool) error {
var handled uint
if handle {
handled = 1
} else {
handled = 0
}
return xprop.ChangeProp32(xu, xu.RootWin(), "_NET_WM_HANDLED_ICONS",
"CARDINAL", handled)
}
// _NET_DESKTOP_VIEWPORT set
func DesktopViewportSet(xu *xgbutil.XUtil, viewports []DesktopViewport) error {
coords := make([]uint, len(viewports)*2)
for i, viewport := range viewports {
coords[i*2] = uint(viewport.X)
coords[i*2+1] = uint(viewport.Y)
}
return xprop.ChangeProp32(xu, xu.RootWin(), "_NET_DESKTOP_VIEWPORT",
"CARDINAL", coords...)
}
// _NET_SHOWING_DESKTOP set
func ShowingDesktopSet(xu *xgbutil.XUtil, show bool) error {
var showInt uint
if show {
showInt = 1
} else {
showInt = 0
}
return xprop.ChangeProp32(xu, xu.RootWin(), "_NET_SHOWING_DESKTOP",
"CARDINAL", showInt)
}
func headGeom(X *xgbutil.XUtil) xrect.Rect {
if X.ExtInitialized("XINERAMA") {
heads, err := xinerama.PhysicalHeads(X)
if err == nil {
return heads[0]
}
}
geom, err := xwindow.New(X, X.RootWin()).Geometry()
fatal(err)
return geom
}
func StatusSet(X *xgbutil.XUtil, status bool) {
var statusStr string
if status {
statusStr = "Success"
} else {
statusStr = "Error"
}
// throw away the error
xprop.ChangeProp(X, X.RootWin(), 8, "_WINGO_CMD_STATUS", "UTF8_STRING",
[]byte(statusStr))
}
// _NET_WORKAREA set
func WorkareaSet(xu *xgbutil.XUtil, workareas []Workarea) error {
rects := make([]uint, len(workareas)*4)
for i, workarea := range workareas {
rects[i*4+0] = uint(workarea.X)
rects[i*4+1] = uint(workarea.Y)
rects[i*4+2] = workarea.Width
rects[i*4+3] = workarea.Height
}
return xprop.ChangeProp32(xu, xu.RootWin(), "_NET_WORKAREA", "CARDINAL",
rects...)
}
// newWindow creates a new window with a random background color. It sets the
// WM_PROTOCOLS property to contain the WM_DELETE_WINDOW atom. It also sets
// up a ClientMessage event handler so that we know when to destroy the window.
// We also set up a mouse binding so that clicking inside a window will
// create another one.
func newWindow(X *xgbutil.XUtil) {
counter++
win, err := xwindow.Generate(X)
if err != nil {
log.Fatal(err)
}
// Get a random background color, create the window (ask to receive button
// release events while we're at it) and map the window.
bgColor := rand.Intn(0xffffff + 1)
win.Create(X.RootWin(), 0, 0, 200, 200,
xproto.CwBackPixel|xproto.CwEventMask,
uint32(bgColor), xproto.EventMaskButtonRelease)
// WMGracefulClose does all of the work for us. It sets the appropriate
// values for WM_PROTOCOLS, and listens for ClientMessages that implement
// the WM_DELETE_WINDOW protocol. When one is found, the provided callback
// is executed.
win.WMGracefulClose(
func(w *xwindow.Window) {
// Detach all event handlers.
// This should always be done when a window can no longer
// receive events.
xevent.Detach(w.X, w.Id)
mousebind.Detach(w.X, w.Id)
w.Destroy()
// Exit if there are no more windows left.
counter--
if counter == 0 {
os.Exit(0)
}
})
// It's important that the map comes after setting WMGracefulClose, since
// the WM isn't obliged to watch updates to the WM_PROTOCOLS property.
win.Map()
// A mouse binding so that a left click will spawn a new window.
// Note that we don't issue a grab here. Typically, window managers will
// grab a button press on the client window (which usually activates the
// window), so that we'd end up competing with the window manager if we
// tried to grab it.
// Instead, we set a ButtonRelease mask when creating the window and attach
// a mouse binding *without* a grab.
err = mousebind.ButtonReleaseFun(
func(X *xgbutil.XUtil, ev xevent.ButtonReleaseEvent) {
newWindow(X)
}).Connect(X, win.Id, "1", false, false)
if err != nil {
log.Fatal(err)
}
}
// currentTime forcefully causes a PropertyNotify event to fire on the root
// window, then scans the event queue and picks up the time.
//
// It is NOT SAFE to call this function in a place other than Wingo's
// initialization. Namely, this function subverts xevent's queue and reads
// events directly from X.
func currentTime(X *xgbutil.XUtil) (xproto.Timestamp, error) {
wmClassAtom, err := xprop.Atm(X, "WM_CLASS")
if err != nil {
return 0, err
}
stringAtom, err := xprop.Atm(X, "STRING")
if err != nil {
return 0, err
}
// Make sure we're listening to PropertyChange events on the root window.
err = xwindow.New(X, X.RootWin()).Listen(xproto.EventMaskPropertyChange)
if err != nil {
return 0, fmt.Errorf(
"Could not listen to Root window events (PropertyChange): %s", err)
}
// Do a zero-length append on a property as suggested by ICCCM 2.1.
err = xproto.ChangePropertyChecked(
X.Conn(), xproto.PropModeAppend, X.RootWin(),
wmClassAtom, stringAtom, 8, 0, nil).Check()
if err != nil {
return 0, err
}
// Now look for the PropertyNotify generated by that zero-length append
// and return the timestamp attached to that event.
// Note that we do this outside of xgbutil/xevent, since ownership
// is literally the first thing we do after connecting to X.
// (i.e., we don't have our event handling system initialized yet.)
timeout := time.After(3 * time.Second)
for {
select {
case <-timeout:
return 0, fmt.Errorf(
"Expected a PropertyNotify event to get a valid timestamp, " +
"but never received one.")
default:
ev, err := X.Conn().PollForEvent()
if err != nil {
continue
}
if propNotify, ok := ev.(xproto.PropertyNotifyEvent); ok {
X.TimeSet(propNotify.Time) // why not?
return propNotify.Time, nil
}
time.Sleep(100 * time.Millisecond)
}
}
panic("unreachable")
}
// SetRoot sets the given background as the root window background.
func SetRoot(X *xgbutil.XUtil, bg *xgraphics.Image) error {
root := X.RootWin()
if err := bg.XSurfaceSet(root); err != nil {
return err
}
bg.XDraw()
bg.XPaint(root)
// FIXME: This doesn't set the pixmap persistently. As soon as the program
// exits, the pixmap is destroyed. Find a way to make it persistent.
xprop.ChangeProp32(X, root, "_XROOTPMAP_ID", "PIXMAP", uint(bg.Pixmap))
xprop.ChangeProp32(X, root, "ESETROOT_PMAP_ID", "PIXMAP", uint(bg.Pixmap))
return nil
}
// _NET_SHOWING_DESKTOP get
func ShowingDesktopGet(xu *xgbutil.XUtil) (bool, error) {
reply, err := xprop.GetProperty(xu, xu.RootWin(), "_NET_SHOWING_DESKTOP")
if err != nil {
return false, err
}
val, err := xprop.PropValNum(reply, nil)
if err != nil {
return false, err
}
return val == 1, nil
}
