/usr/share/pyshared/gnomeosd/server.py is in gnome-osd 0.12.2-1.1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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import sys
import gobject
import gtk
import gtk.gdk as gdk
import pango
import bonobo
import gosd
import gconfsync
import gc
import os.path
import gnome
import gnome_osd_conf
import warnings
import xml.dom.minidom as dom
import gtasklet
import traceback
try:
import dbus
import dbus.service
import dbus.glib
except ImportError:
HAVE_DBUS = False
else:
HAVE_DBUS = True
bgcolor = "#000000"
fgcolor = "#80ff80"
gosd.BORDER_WIDTH = 1
ANIMATION = True
ANIMATION_STEPS = 10
ANIMATION_TIME = 200
gnome.program_init("gnome-osd-server", gnome_osd_conf.VERSION)
prefs = gconfsync.GConfSync("/apps/gnome-osd",
dict(osd_halignment=dict(left=pango.ALIGN_LEFT,
right=pango.ALIGN_RIGHT,
center=pango.ALIGN_CENTER)))
# Note: interning atoms avoids X server roundtrips
_NET_CURRENT_DESKTOP = gtk.gdk.atom_intern("_NET_CURRENT_DESKTOP")
_NET_WORKAREA = gtk.gdk.atom_intern("_NET_WORKAREA")
def get_current_workarea():
root = gtk.gdk.screen_get_default().get_root_window()
prop = root.property_get(_NET_CURRENT_DESKTOP)
if prop is None:
return None
propname, proptype, propvalue = prop
current = propvalue[0]
prop = root.property_get(_NET_WORKAREA)
if prop is None:
return None
propname, proptype, propvalue = prop
return propvalue[current*4 : (current + 1)*4]
def _map_ellipsize_val(val):
return {
'none': pango.ELLIPSIZE_NONE,
'start': pango.ELLIPSIZE_START,
'middle': pango.ELLIPSIZE_MIDDLE,
'end': pango.ELLIPSIZE_END,
} [val.lower()]
class OSDMessage(object):
class Message(object):
__slots__ = ('text', 'timeout')
class Animation(gtasklet.Tasklet):
def __init__(self, win, x0, y0, xf, yf):
self.x = float(x0)
self.y = float(y0)
self.dx = (xf - x0) / ANIMATION_STEPS
self.dy = (yf - y0) / ANIMATION_STEPS
self.win = win
self.counter = ANIMATION_STEPS
self.timeout = gtasklet.WaitForTimeout(ANIMATION_TIME//ANIMATION_STEPS)
win.move(int(x0), int(y0))
win.show()
gtasklet.Tasklet.__init__(self)
def run(self):
counter = ANIMATION_STEPS
while counter:
counter -= 1
yield self.timeout
gtasklet.get_event()
self.x += self.dx
self.y += self.dy
self.win.move(int(self.x), int(self.y))
def __init__(self, id, inherit=None):
self.hide_timeout = None
self.message_queue = []
self.__show_lock = False
self.animation_vector = None
self.inherit = inherit
self.props = {}
self.id = id
self.occupied_area = None
self.__show_task = None
def getprop(self, name):
try:
return self.props[name]
except KeyError:
if self.inherit is None:
return prefs[name]
else:
return self.inherit.getprop(name)
def show(self, text, timeout=None):
msg = self.Message()
msg.text = text
if timeout is None:
msg.timeout = self.getprop('hide_timeout')
else:
msg.timeout = timeout
self.message_queue.append(msg)
if self.__show_task is None:
self.__show_task = gtasklet.Tasklet(self._show_messages())
else:
## speed up hiding existing message
self.__show_task.send_message(gtasklet.Message("continue"))
def _show_messages(self):
while self.message_queue:
msg = self.message_queue.pop(0)
halign = self.getprop('osd_halignment')
vpos = self.getprop('osd_vposition')
if self.getprop('avoid_panels'):
workarea = get_current_workarea()
if workarea is not None:
desk_x, desk_y, desk_w, desk_h = workarea
else:
warnings.warn("get_current_workarea failed, somehow")
desk_x, desk_y = 0, 0
desk_w = gdk.screen_width()
desk_h = gdk.screen_height()
else:
desk_x, desk_y = 0, 0
desk_w = gdk.screen_width()
desk_h = gdk.screen_height()
w = gosd.osd(msg.text, bgcolor, fgcolor,
pango.FontDescription(self.getprop('osd_font')),
use_markup=True,
alignment=halign,
fake_translucent_bg=self.getprop("osd_fake_translucent_bg"),
drop_shadow=self.getprop("drop_shadow"),
max_width=desk_w,
debug_frame=self.getprop('debug_frame'),
ellipsize=_map_ellipsize_val(self.getprop('ellipsize')))
if self.getprop('enable_sound'):
gnome.sound_play(self.__get_sound_sample_file())
y, x, y_final = self.reserve_display_area(vpos, halign, w,
desk_x, desk_y, desk_w, desk_h)
if self.getprop('animations'):
anim = self.Animation(w, x, y, x, y_final)
yield gtasklet.WaitForTasklet(anim), gtasklet.WaitForMessages(defer='continue')
gtasklet.get_event()
else:
w.move(x, y_final)
w.show()
wait_list = [gtasklet.WaitForMessages(accept='continue')]
if not self.message_queue:
## if there are messages waiting, don't pause
wait_list.append(gtasklet.WaitForTimeout(msg.timeout))
if self.getprop('hide_on_hover'):
wait_list.append(gtasklet.WaitForSignal(w, "enter-notify-event"))
yield wait_list ## during this yield the message stays on screen, very still
event = gtasklet.get_event()
## Now hide it
if self.getprop('animations'):
anim = self.Animation(w, x, y_final, x, y)
yield gtasklet.WaitForTasklet(anim), gtasklet.WaitForMessages(defer='continue')
gtasklet.get_event()
w.destroy()
self.occupied_area = None
while gc.collect():
pass
self.__show_task = None
return
def __get_sound_sample_file(self):
sound_sample = self.getprop('sound_sample')
if sound_sample[0] == '/':
return sound_sample
else:
return os.path.join(gnome_osd_conf.datadir, "sounds", sound_sample)
instances = {}
def get(cls, attrs={}):
global prefs
id_ = attrs.get('id', 'default')
inherit = attrs.get('inherit', 'default')
try:
osd_msg = cls.instances[id_]
except KeyError:
if inherit == 'default':
inherit_osd = None
else:
inherit_osd = cls.instances[inherit]
osd_msg = OSDMessage(id=id_, inherit=inherit_osd)
cls.instances[id_] = osd_msg
for key, str_val in attrs.iteritems():
if key in ('id', 'inherit'): # special properties, no gconf schema
continue
if id_ == 'default':
raise ValueError, "changing message properties"\
" for 'default' instance not allowed"
val = prefs.parse_string(key, str_val)
osd_msg.props[key] = val
return osd_msg
get = classmethod(get)
def reserve_display_area(self, vpos, halign, w, desk_x, desk_y, desk_w, desk_h):
if halign == pango.ALIGN_LEFT:
x = 2 + desk_x
elif halign == pango.ALIGN_RIGHT:
x = desk_x + desk_w - w.width - 2
else: # center
x = desk_x + (desk_w - w.width) // 2
occupied_areas = [inst.occupied_area for inst in self.instances.itervalues()
if not (inst is self or inst.occupied_area is None)]
def intersection(area, x, y):
x1, y1 = x, y
x2, y2 = x + w.width, y + w.height
ox1, oy1, ox2, oy2 = area
result = ((x1 >= ox1 and x1 <= ox2
or x2 <= ox2 and x2 >= ox1
or x1 <= ox1 and x2 >= ox2)
and
(y1 >= oy1 and y1 <= oy2
or y2 <= oy2 and y2 >= oy1
or y1 <= oy1 and y2 >= oy2))
return result
if vpos == 'top':
y = -w.height
def sort_func(a, b):
return cmp(a[3], b[3])
occupied_areas.sort(sort_func)
y_final = desk_y + 2
for area in occupied_areas:
if intersection(area, x, y_final):
y_final = area[3] + 2
else:
break
elif vpos == 'center':
y = -w.height
y_ideal = desk_y + desk_h//2 - w.height//2
def sort_func(a, b):
return cmp(abs(y_ideal - a), abs(y_ideal - b))
y_final = y_ideal
possible_targets = [y_ideal]
for area in occupied_areas:
possible_targets.append(area[3] + 2)
possible_targets.append(area[1] - 2 - w.height)
possible_targets.sort(sort_func)
for target in possible_targets:
for area in occupied_areas:
if intersection(area, x, target):
break
else:
y_final = target
break
else:
y_final = None
assert y_final is not None
elif vpos == 'bottom':
y = gdk.screen_height()
y_final = desk_y + desk_h - w.height - 2
def sort_func(a, b):
return cmp(b[1], a[1])
occupied_areas.sort(sort_func)
for area in occupied_areas:
if intersection(area, x, y_final):
y_final = area[1] - 2 - w.height
else:
break
else:
raise ValueError, "invalid vposition '%s'" % vpos
self.occupied_area = (x, y_final, x + w.width, y_final + w.height)
return y, x, y_final
def message_quit_cb(app_client, message, app):
print "received quit message"
app.unref()
bonobo.main_quit()
def message_show_cb(_, message, timeout=-1):
try:
attrs = {'id': 'default'}
if timeout == -1:
timeout = None
osd_msg = OSDMessage.get(attrs)
osd_msg.show(message, timeout)
return ''
except Exception, ex:
exc_info = sys.exc_info()
try:
error = "".join(traceback.format_exception(*exc_info))
finally:
del exc_info
print >> sys.stderr, error
return error
def message_parse(message):
'''message_parse(msg) -> (attrs, pango_markup)'''
doc = dom.parseString(message.decode("utf-8"))
root = doc.documentElement
if root.tagName != "message":
raise RuntimeError("Protocol error: expecting <message>, got <%s>" % root.tagName)
pango_markup = "".join(map(dom.Node.toxml, root.childNodes))
attrs = {}
for i in xrange(root.attributes.length):
name = root.attributes.item(i).name
attrs[name] = root.getAttribute(name)
return attrs, pango_markup
def message_show_full_cb(_, message):
try:
attrs, pango_s = message_parse(message)
osd_msg = OSDMessage.get(attrs)
osd_msg.show(pango_s)
return ''
except Exception, ex:
print >> sys.stderr, ex
return "%s: %s" % (str(ex.__class__), str(ex))
(ACTIVATION_REG_SUCCESS,
ACTIVATION_REG_NOT_LISTED,
ACTIVATION_REG_ALREADY_ACTIVE,
ACTIVATION_REG_ERROR) = range(4)
def start_bonobo_interface():
os.putenv("DISPLAY", gtk.gdk.get_display())
bonobo.activate()
app = bonobo.Application("GNOME_OSD")
def last_unref_cb(*args):
print "Last Unref, quitting"
bonobo.main_quit()
reg = bonobo.activation.active_server_register("OAFIID:GNOME_OSD", app.corba_objref())
if reg != ACTIVATION_REG_SUCCESS:
raise SystemExit(3)
app.connect("message::quit", message_quit_cb, app)
app.register_message("show",
"Show a message in pango markup using default options",
str, (str, int),
message_show_cb)
app.register_message("show-full",
"Show a message in Gnome OSD protocol format"
" (XML <message ...> ... </message>)",
str, (str,),
message_show_full_cb)
bonobo.context_running_get().connect("last-unref", last_unref_cb)
if HAVE_DBUS:
class DBusInterface(dbus.service.Object):
def __init__(self, bus_name, object_path="/Server"):
dbus.service.Object.__init__(self, bus_name, object_path)
#@dbus.service.method("pt.inescporto.telecom.GnomeOSD")
def showMessage(self, message, timeout=-1):
return message_show_cb(None, message, timeout)
showMessage = dbus.service.method("pt.inescporto.telecom.GnomeOSD")(showMessage)
#@dbus.service.method("pt.inescporto.telecom.GnomeOSD")
def showMessageFull(self, message):
return message_show_full_cb(None, message)
showMessageFull = dbus.service.method("pt.inescporto.telecom.GnomeOSD")(showMessageFull)
def start_dbus_interface():
session_bus = dbus.SessionBus()
name = dbus.service.BusName("pt.inescporto.telecom.GnomeOSD",
bus=session_bus)
obj = DBusInterface(name)
def main():
print "starting Bonobo interface..."
start_bonobo_interface()
if HAVE_DBUS:
print "starting DBUS interface..."
start_dbus_interface()
print "entering main loop..."
bonobo.main()
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