sugar-toolkit-gtk3/shell/view/Shell.py

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# Copyright (C) 2006-2007 Red Hat, Inc.
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#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
from gettext import gettext as _
from sets import Set
import logging
import tempfile
import os
import time
import shutil
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import gobject
import gtk
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import wnck
import dbus
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from sugar.activity.activityhandle import ActivityHandle
from sugar import activity
from sugar.activity import activityfactory
from sugar.datastore import datastore
from sugar import profile
from sugar import env
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from view.ActivityHost import ActivityHost
from view.frame.frame import Frame
from view.keyhandler import KeyHandler
from view.home.HomeWindow import HomeWindow
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from model.shellmodel import ShellModel
# #3903 - this constant can be removed and assumed to be 1 when dbus-python
# 0.82.3 is the only version used
if dbus.version >= (0, 82, 3):
DBUS_PYTHON_TIMEOUT_UNITS_PER_SECOND = 1
else:
DBUS_PYTHON_TIMEOUT_UNITS_PER_SECOND = 1000
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class Shell(gobject.GObject):
def __init__(self, model):
gobject.GObject.__init__(self)
self._activities_starting = Set()
self._model = model
self._hosts = {}
self._screen = wnck.screen_get_default()
self._current_host = None
self._pending_host = None
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self._screen_rotation = 0
self._zoom_level = ShellModel.ZOOM_HOME
self._key_handler = KeyHandler(self)
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self._frame = Frame(self)
self._home_window = HomeWindow(self)
self._home_window.show()
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home_model = self._model.get_home()
home_model.connect('activity-started', self._activity_started_cb)
home_model.connect('activity-removed', self._activity_removed_cb)
home_model.connect('active-activity-changed',
self._active_activity_changed_cb)
home_model.connect('pending-activity-changed',
self._pending_activity_changed_cb)
self._model.connect('notify::zoom-level', self._zoom_level_changed_cb)
gobject.idle_add(self._start_journal_idle)
def _start_journal_idle(self):
# Mount the datastore in internal flash
ds_path = env.get_profile_path('datastore')
try:
datastore.mount(ds_path, [], timeout=120 * \
DBUS_PYTHON_TIMEOUT_UNITS_PER_SECOND)
except:
# Don't explode if there's corruption; move the data out of the way
# and attempt to create a store from scratch.
shutil.move(ds_path, os.path.abspath(ds_path) + str(time.time()))
datastore.mount(ds_path, [], timeout=120 * \
DBUS_PYTHON_TIMEOUT_UNITS_PER_SECOND)
# Checking for the bundle existence will also ensure
# that the shell service is started up.
registry = activity.get_registry()
if registry.get_activity('org.laptop.JournalActivity'):
self.start_activity('org.laptop.JournalActivity')
def _activity_started_cb(self, home_model, home_activity):
activity_host = ActivityHost(home_activity)
self._hosts[activity_host.get_xid()] = activity_host
if home_activity.get_type() in self._activities_starting:
self._activities_starting.remove(home_activity.get_type())
def _activity_removed_cb(self, home_model, home_activity):
if home_activity.get_type() in self._activities_starting:
self._activities_starting.remove(home_activity.get_type())
xid = home_activity.get_xid()
if self._hosts.has_key(xid):
self._hosts[xid].destroy()
del self._hosts[xid]
def _active_activity_changed_cb(self, home_model, home_activity):
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if home_activity:
host = self._hosts[home_activity.get_xid()]
else:
host = None
if self._current_host:
self._current_host.set_active(False)
self._current_host = host
def _pending_activity_changed_cb(self, home_model, home_activity):
if home_activity:
self._pending_host = self._hosts[home_activity.get_xid()]
else:
self._pending_host = None
def get_model(self):
return self._model
def get_frame(self):
return self._frame
def join_activity(self, bundle_id, activity_id):
activity_host = self.get_activity(activity_id)
if activity_host:
activity_host.present()
return
# Get the service name for this activity, if
# we have a bundle on the system capable of handling
# this activity type
registry = activity.get_registry()
bundle = registry.get_activity(bundle_id)
if not bundle:
logging.error("Couldn't find activity for type %s" % bundle_id)
return
handle = ActivityHandle(activity_id)
activityfactory.create(bundle_id, handle)
def notify_launch(self, bundle_id, activity_id):
# Zoom to Home for launch feedback
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self.set_zoom_level(ShellModel.ZOOM_HOME)
home_model = self._model.get_home()
home_model.notify_activity_launch(activity_id, bundle_id)
def notify_launch_failure(self, activity_id):
home_model = self._model.get_home()
home_model.notify_activity_launch_failed(activity_id)
def start_activity(self, activity_type):
if activity_type in self._activities_starting:
logging.debug("This activity is still launching.")
return
self._activities_starting.add(activity_type)
activityfactory.create(activity_type)
def take_activity_screenshot(self):
if self._model.get_zoom_level() != ShellModel.ZOOM_ACTIVITY:
return
if self.get_frame().visible:
return
home_model = self._model.get_home()
activity = home_model.get_active_activity()
if activity is not None:
service = activity.get_service()
if service is not None:
try:
service.TakeScreenshot(timeout=2.0)
except dbus.DBusException, e:
logging.debug('Error raised by TakeScreenshot(): %s', e)
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def set_zoom_level(self, level):
if level == self._zoom_level:
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return
self.take_activity_screenshot()
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if level == ShellModel.ZOOM_ACTIVITY:
if self._pending_host is not None:
self._pending_host.present()
self._screen.toggle_showing_desktop(False)
else:
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self._model.set_zoom_level(level)
self._screen.toggle_showing_desktop(True)
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self._home_window.set_zoom_level(level)
def _zoom_level_changed_cb(self, model, pspec):
new_level = model.props.zoom_level
if new_level == ShellModel.ZOOM_HOME:
self._frame.show(Frame.MODE_NON_INTERACTIVE)
if self._zoom_level == ShellModel.ZOOM_HOME:
self._frame.hide()
self._zoom_level = new_level
def toggle_activity_fullscreen(self):
if self._model.get_zoom_level() == ShellModel.ZOOM_ACTIVITY:
self.get_current_activity().toggle_fullscreen()
def activate_previous_activity(self):
home_model = self._model.get_home()
activity = home_model.get_previous_activity()
if activity:
self.take_activity_screenshot()
activity.get_window().activate(1)
def activate_next_activity(self):
home_model = self._model.get_home()
activity = home_model.get_next_activity()
if activity:
self.take_activity_screenshot()
activity.get_window().activate(1)
def close_current_activity(self):
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if self._model.get_zoom_level() != ShellModel.ZOOM_ACTIVITY:
return
home_model = self._model.get_home()
activity = home_model.get_active_activity()
if activity.get_type() == 'org.laptop.JournalActivity':
return
self.take_activity_screenshot()
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self.get_current_activity().close()
def get_current_activity(self):
return self._current_host
def get_activity(self, activity_id):
for host in self._hosts.values():
if host.get_id() == activity_id:
return host
return None
def toggle_chat_visibility(self):
act = self.get_current_activity()
if not act:
return
is_visible = self._frame.is_visible()
if act.is_chat_visible():
frame_was_visible = act.chat_hide()
if not frame_was_visible:
self._frame.do_slide_out()
else:
if not is_visible:
self._frame.do_slide_in()
act.chat_show(is_visible)
def take_screenshot(self):
file_path = os.path.join(tempfile.gettempdir(), '%i' % time.time())
window = gtk.gdk.get_default_root_window()
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width, height = window.get_size()
x_orig, y_orig = window.get_origin()
screenshot = gtk.gdk.Pixbuf(gtk.gdk.COLORSPACE_RGB, has_alpha=False,
bits_per_sample=8, width=width, height=height)
screenshot.get_from_drawable(window, window.get_colormap(), x_orig, y_orig, 0, 0,
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width, height)
screenshot.save(file_path, "png")
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try:
jobject = datastore.create()
try:
jobject.metadata['title'] = _('Screenshot')
jobject.metadata['keep'] = '0'
jobject.metadata['buddies'] = ''
jobject.metadata['preview'] = ''
jobject.metadata['icon-color'] = profile.get_color().to_string()
jobject.metadata['mime_type'] = 'image/png'
jobject.file_path = file_path
datastore.write(jobject)
finally:
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jobject.destroy()
del jobject
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finally:
os.remove(file_path)