def __init__(self, props):
gobject.GObject.__init__(self)
self._props = props
self._root = gtk.gdk.get_default_root_window()
self._saved_event_mask = self._root.get_events()
self._root.set_events(self._saved_event_mask | gtk.gdk.PROPERTY_CHANGE_MASK)
self._own_x11_filter = init_x11_filter()
add_event_receiver(self._root, self)
def setup(self):
xwin = self._window.xid
if not self._already_composited:
X11Window.XCompositeRedirectWindow(xwin)
self._border_width = X11Window.geometry_with_border(xwin)[-1]
self.invalidate_pixmap()
self._damage_handle = X11Window.XDamageCreate(xwin)
log("CompositeHelper.setup() damage handle(%#x)=%#x", xwin, self._damage_handle)
add_event_receiver(self._window, self)
def setup(self):
self.invalidate_pixmap()
xid = self.client_window.xid
geom = X11Window.geometry_with_border(xid)
if geom is None:
raise Unmanageable("window %#x disappeared already" % xid)
self._border_width = geom[-1]
self.create_damage_handle()
add_event_receiver(self.client_window, self)
def set_pixmap():
# The tricky part here is that the pixmap returned by
# NameWindowPixmap gets invalidated every time the window's
# viewable state changes. ("viewable" here is the X term that
# means "mapped, and all ancestors are also mapped".) But
# there is no X event that will tell you when a window's
# viewability changes! Instead we have to find all ancestors,
# and watch all of them for unmap and reparent events. But
# what about races? I hear you cry. By doing things in the
# exact order:
# 1) select for StructureNotify
# 2) QueryTree to get parent
# 3) repeat 1 & 2 up to the root
# 4) call NameWindowPixmap
# we are safe. (I think.)
listening = []
e = None
try:
root = self._window.get_screen().get_root_window()
world = get_world_window().window
win = get_parent(self._window)
while win not in (None, root,
world) and win.get_parent() is not None:
# We have to use a lowlevel function to manipulate the
# event selection here, because SubstructureRedirectMask
# does not roundtrip through the GDK event mask
# functions. So if we used them, here, we would clobber
# corral window selection masks, and those don't deserve
# clobbering. They are our friends! X is driving me
# slowly mad.
X11Window.addXSelectInput(win.xid, StructureNotifyMask)
add_event_receiver(win, self, max_receivers=-1)
listening.append(win)
win = get_parent(win)
handle = XImage.get_xcomposite_pixmap(self._window.xid)
except Exception as e:
try:
self._cleanup_listening(listening)
except:
pass
raise
if handle is None:
#avoid race during signal exit, which will clear self._window:
win = self._window
xid = 0
if win:
xid = win.xid
log("failed to name a window pixmap for %#x: %s", xid, e)
self._cleanup_listening(listening)
else:
self._contents_handle = handle
# Don't save the listening set until after
# NameWindowPixmap has succeeded, to maintain our
# invariant:
self._listening_to = listening
def x11_init(self):
X11ServerBase.x11_init(self)
assert init_x11_filter() is True
display = gtk.gdk.display_get_default()
screens = display.get_n_screens()
for n in range(screens):
screen = display.get_screen(n)
root = screen.get_root_window()
add_event_receiver(root, self)
add_catchall_receiver("xpra-motion-event", self)
add_catchall_receiver("xpra-xkb-event", self)
X11Keyboard.selectBellNotification(True)
def call_setup(self):
"""
Call this method to prepare the window:
* makes sure it still exists
(by querying its geometry which may raise an XError)
* setup composite redirection
* calls setup
The difficulty comes from X11 errors and synchronization:
we want to catch errors and undo what we've done.
The mix of GTK and pure-X11 calls is not helping.
"""
try:
with xsync:
geom = X11Window.geometry_with_border(self.xid)
if geom is None:
raise Unmanageable("window %#x disappeared already" % self.xid)
self._internal_set_property("geometry", geom[:4])
self._read_initial_X11_properties()
except XError as e:
raise Unmanageable(e)
add_event_receiver(self.client_window, self)
# Keith Packard says that composite state is undefined following a
# reparent, so I'm not sure doing this here in the superclass,
# before we reparent, actually works... let's wait and see.
try:
self._composite = CompositeHelper(self.client_window)
with xsync:
self._composite.setup()
if X11Window.displayHasXShape():
X11Window.XShapeSelectInput(self.xid)
except Exception as e:
remove_event_receiver(self.client_window, self)
log("%s %#x does not support compositing: %s", self._MODELTYPE, self.xid, e)
with xswallow:
self._composite.destroy()
self._composite = None
if isinstance(e, Unmanageable):
raise
raise Unmanageable(e)
#compositing is now enabled,
#from now on we must call setup_failed to clean things up
self._managed = True
try:
with xsync:
self.setup()
except XError as e:
try:
with xsync:
self.setup_failed(e)
except Exception as ex:
log.error("error in cleanup handler: %s", ex)
raise Unmanageable(e)
self._setup_done = True
def setup(self):
super(WindowModel, self).setup()
x, y, w, h, _ = self.client_window.get_geometry()
# We enable PROPERTY_CHANGE_MASK so that we can call
# x11_get_server_time on this window.
self.corral_window = gtk.gdk.Window(self.parking_window,
x = x, y = y, width =w, height= h,
window_type=gtk.gdk.WINDOW_CHILD,
wclass=gtk.gdk.INPUT_OUTPUT,
event_mask=gtk.gdk.PROPERTY_CHANGE_MASK,
title = "CorralWindow-%#x" % self.xid)
log("setup() corral_window=%#x", self.corral_window.xid)
prop_set(self.corral_window, "_NET_WM_NAME", "utf8", u"Xpra-CorralWindow-%#x" % self.xid)
X11Window.substructureRedirect(self.corral_window.xid)
add_event_receiver(self.corral_window, self)
# The child might already be mapped, in case we inherited it from
# a previous window manager. If so, we unmap it now, and save the
# serial number of the request -- this way, when we get an
# UnmapNotify later, we'll know that it's just from us unmapping
# the window, not from the client withdrawing the window.
if X11Window.is_mapped(self.xid):
log("hiding inherited window")
self.last_unmap_serial = X11Window.Unmap(self.xid)
log("setup() adding to save set")
X11Window.XAddToSaveSet(self.xid)
self.in_save_set = True
log("setup() reparenting")
X11Window.Reparent(self.xid, self.corral_window.xid, 0, 0)
self.client_reparented = True
log("setup() geometry")
w, h = X11Window.geometry_with_border(self.xid)[2:4]
hints = self.get_property("size-hints")
log("setup() hints=%s size=%ix%i", hints, w, h)
nw, nh = calc_constrained_size(w, h, hints)
if nw>=MAX_WINDOW_SIZE or nh>=MAX_WINDOW_SIZE:
#we can't handle windows that big!
raise Unmanageable("window constrained size is too large: %sx%s (from client geometry: %s,%s with size hints=%s)" % (nw, nh, w, h, hints))
self._updateprop("geometry", (x, y, nw, nh))
log("setup() resizing windows to %sx%s", nw, nh)
self.corral_window.resize(nw, nh)
self.client_window.resize(nw, nh)
self.client_window.show_unraised()
#this is here to trigger X11 errors if any are pending
#or if the window is deleted already:
self.client_window.get_geometry()
def dock_tray(self, xid):
root = gtk.gdk.get_default_root_window()
window = gtk.gdk.window_foreign_new(xid)
if window is None:
log.warn("could not find gdk window for tray window %#x", xid)
return
w, h = window.get_geometry()[2:4]
event_mask = gtk.gdk.STRUCTURE_MASK | gtk.gdk.EXPOSURE_MASK | gtk.gdk.PROPERTY_CHANGE_MASK
window.set_events(event_mask=event_mask)
add_event_receiver(window, self)
w = max(1, min(64, w))
h = max(1, min(64, h))
title = prop_get(window, "_NET_WM_NAME", "utf8", ignore_errors=True)
if title is None:
title = prop_get(window, "WM_NAME", "latin1", ignore_errors=True)
if title is None:
title = ""
log("dock_tray(%#x) gdk window=%#x, geometry=%s, title=%s, visual.depth=%s", xid, window.xid, window.get_geometry(), title, window.get_visual().depth)
event_mask = gtk.gdk.STRUCTURE_MASK | gtk.gdk.EXPOSURE_MASK | gtk.gdk.PROPERTY_CHANGE_MASK
tray_window = gtk.gdk.Window(root, width=w, height=h,
window_type=gtk.gdk.WINDOW_TOPLEVEL,
event_mask = event_mask,
wclass=gtk.gdk.INPUT_OUTPUT,
title=title,
x=-200, y=-200,
override_redirect=True,
visual=window.get_visual(),
colormap=window.get_colormap())
log("dock_tray(%#x) setting tray properties", xid)
set_tray_window(tray_window, window)
tray_window.show()
self.tray_windows[window] = tray_window
self.window_trays[tray_window] = window
log("dock_tray(%#x) resizing and reparenting", xid)
window.resize(w, h)
xwin = window.xid
xtray = tray_window.xid
X11Window.Withdraw(xwin)
X11Window.Reparent(xwin, xtray, 0, 0)
X11Window.MapRaised(xwin)
log("dock_tray(%#x) new tray container window %#x", xid, xtray)
tray_window.invalidate_rect(gtk.gdk.Rectangle(width=w, height=h), True)
X11Window.send_xembed_message(xwin, XEMBED_EMBEDDED_NOTIFY, 0, xtray, XEMBED_VERSION)
def setup_tray_window(self):
display = gtk.gdk.display_get_default()
root = gtk.gdk.get_default_root_window()
screen = root.get_screen()
if TRANSPARENCY:
colormap, visual = screen.get_rgba_colormap(), screen.get_rgba_visual()
if colormap is None or visual is None:
log.warn("setup tray: using rgb visual fallback")
colormap, visual = screen.get_rgb_colormap(), screen.get_rgb_visual()
assert colormap is not None and visual is not None, "failed to obtain visual or colormap"
owner = X11Window.XGetSelectionOwner(SELECTION)
log("setup tray: current selection owner=%#x", owner)
if owner!=XNone:
raise Exception("%s already owned by %s" % (SELECTION, owner))
self.tray_window = gtk.gdk.Window(root, width=1, height=1,
window_type=gtk.gdk.WINDOW_TOPLEVEL,
event_mask = 0,
wclass=gtk.gdk.INPUT_OUTPUT,
title="Xpra-SystemTray",
visual=visual,
colormap=colormap)
xtray = self.tray_window.xid
set_tray_visual(self.tray_window, visual)
set_tray_orientation(self.tray_window, TRAY_ORIENTATION_HORZ)
log("setup tray: tray window %#x", xtray)
display.request_selection_notification(SELECTION)
try:
with xsync:
setsel = X11Window.XSetSelectionOwner(xtray, SELECTION)
log("setup tray: set selection owner returned %s, owner=%#x", setsel, X11Window.XGetSelectionOwner(SELECTION))
event_mask = StructureNotifyMask
log("setup tray: sending client message")
X11Window.sendClientMessage(root.xid, root.xid, False, event_mask, "MANAGER",
CurrentTime, SELECTION, xtray)
owner = X11Window.XGetSelectionOwner(SELECTION)
assert owner==xtray, "we failed to get ownership of the tray selection"
add_event_receiver(self.tray_window, self)
log("setup tray: done")
except Exception:
log("setup_tray failure", exc_info=True)
self.cleanup()
raise
def __init__(self, replace_other_wm, wm_name, display=None):
gobject.GObject.__init__(self)
if display is None:
display = gtk.gdk.display_manager_get().get_default_display()
self._display = display
self._root = self._display.get_default_screen().get_root_window()
self._wm_name = wm_name
self._ewmh_window = None
self._windows = {}
# EWMH says we have to know the order of our windows oldest to
# youngest...
self._windows_in_order = []
# Become the Official Window Manager of this year's display:
self._wm_selection = ManagerSelection(self._display, "WM_S0")
self._cm_wm_selection = ManagerSelection(self._display, "_NET_WM_CM_S0")
self._wm_selection.connect("selection-lost", self._lost_wm_selection)
self._cm_wm_selection.connect("selection-lost", self._lost_wm_selection)
# May throw AlreadyOwned:
if replace_other_wm:
mode = self._wm_selection.FORCE
else:
mode = self._wm_selection.IF_UNOWNED
self._wm_selection.acquire(mode)
self._cm_wm_selection.acquire(mode)
# Set up the necessary EWMH properties on the root window.
self._setup_ewmh_window()
# Start with just one desktop:
self.set_desktop_list([u"Main"])
self.set_current_desktop(0)
# Start with the full display as workarea:
root_w, root_h = gtk.gdk.get_default_root_window().get_size()
self.root_set("_NET_SUPPORTED", ["atom"], NET_SUPPORTED)
self.set_workarea(0, 0, root_w, root_h)
self.set_desktop_geometry(root_w, root_h)
self.root_set("_NET_DESKTOP_VIEWPORT", ["u32"], [0, 0])
# Load up our full-screen widget
self._world_window = WorldWindow(self._display.get_default_screen())
self.notify("toplevel")
self._world_window.show_all()
# Okay, ready to select for SubstructureRedirect and then load in all
# the existing clients.
add_event_receiver(self._root, self)
add_fallback_receiver("xpra-client-message-event", self)
X11Window.substructureRedirect(self._root.xid)
for w in get_children(self._root):
# Checking for FOREIGN here filters out anything that we've
# created ourselves (like, say, the world window), and checking
# for mapped filters out any withdrawn windows.
if (w.get_window_type() == gtk.gdk.WINDOW_FOREIGN
and not X11Window.is_override_redirect(w.xid)
and X11Window.is_mapped(w.xid)):
log("Wm managing pre-existing child window %#x", w.xid)
self._manage_client(w)
# Also watch for focus change events on the root window
X11Window.selectFocusChange(self._root.xid)
X11Keyboard.selectBellNotification(True)
def acquire(self, when):
old_owner = self._owner()
if when is self.IF_UNOWNED and old_owner != XNone:
raise AlreadyOwned
self.clipboard.set_with_data([("VERSION", 0, 0)],
self._get,
self._clear,
None)
# Having acquired the selection, we have to announce our existence
# (ICCCM 2.8, still). The details here probably don't matter too
# much; I've never heard of an app that cares about these messages,
# and metacity actually gets the format wrong in several ways (no
# MANAGER or owner_window atoms). But might as well get it as right
# as possible.
# To announce our existence, we need:
# -- the timestamp we arrived at
# -- the manager selection atom
# -- the window that registered the selection
# Of course, because Gtk is doing so much magic for us, we have to do
# some weird tricks to get at these.
# Ask ourselves when we acquired the selection:
ts_data = self.clipboard.wait_for_contents("TIMESTAMP").data
#data is a timestamp, X11 datatype is Time which is CARD32,
#(which is 64 bits on 64-bit systems!)
Lsize = calcsize("@L")
if len(ts_data)==Lsize:
ts_num = unpack("@L", ts_data[:Lsize])[0]
else:
ts_num = 0 #CurrentTime
log.warn("invalid data for 'TIMESTAMP': %s", ([hex(ord(x)) for x in ts_data]))
# Calculate the X atom for this selection:
selection_xatom = get_xatom(self.atom)
# Ask X what window we used:
self._xwindow = X11Window.XGetSelectionOwner(self.atom)
root = self.clipboard.get_display().get_default_screen().get_root_window()
X11Window.sendClientMessage(root.xid, root.xid, False, StructureNotifyMask,
"MANAGER",
ts_num, selection_xatom, self._xwindow)
if old_owner != XNone and when is self.FORCE:
# Block in a recursive mainloop until the previous owner has
# cleared out.
try:
with xsync:
window = get_pywindow(self.clipboard, old_owner)
window.set_events(window.get_events() | gtk.gdk.STRUCTURE_MASK)
log("got window")
except XError:
log("Previous owner is already gone, not blocking")
else:
log("Waiting for previous owner to exit...")
add_event_receiver(window, self)
gtk.main()
log("...they did.")
window = get_pywindow(self.clipboard, self._xwindow)
window.set_title("Xpra-ManagerSelection")
def __init__(self, screen_number=0):
gobject.GObject.__init__(self)
XSettingsHelper.__init__(self, screen_number)
self._root = self._clipboard.get_display().get_default_screen().get_root_window()
add_event_receiver(self._root, self)
self._add_watch()
def _add_watch(self):
owner = self.xsettings_owner()
if owner is not None:
add_event_receiver(owner, self)
def _add_watch(self):
owner = self.xsettings_owner()
if owner is not None:
add_event_receiver(owner, self)
