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# Copyright (C) 2007, Red Hat, Inc.
#
# 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
import gtk
import gobject
import wnck
class EventArea(gobject.GObject):
__gsignals__ = {
'enter': (gobject.SIGNAL_RUN_FIRST,
gobject.TYPE_NONE, ([])),
'leave': (gobject.SIGNAL_RUN_FIRST,
gobject.TYPE_NONE, ([]))
}
def __init__(self):
gobject.GObject.__init__(self)
self._windows = []
self._hover = False
right = gtk.gdk.screen_width() - 1
bottom = gtk.gdk.screen_height() -1
invisible = self._create_invisible(0, 0, 1, 1)
self._windows.append(invisible)
invisible = self._create_invisible(right, 0, 1, 1)
self._windows.append(invisible)
invisible = self._create_invisible(0, bottom, 1, 1)
self._windows.append(invisible)
invisible = self._create_invisible(right, bottom, 1, 1)
self._windows.append(invisible)
screen = wnck.screen_get_default()
screen.connect('window-stacking-changed',
self._window_stacking_changed_cb)
def _create_invisible(self, x, y, width, height):
invisible = gtk.Invisible()
invisible.connect('enter-notify-event', self._enter_notify_cb)
invisible.connect('leave-notify-event', self._leave_notify_cb)
invisible.drag_dest_set(0, [], 0)
invisible.connect('drag_motion', self._drag_motion_cb)
invisible.connect('drag_leave', self._drag_leave_cb)
invisible.realize()
invisible.window.set_events(gtk.gdk.POINTER_MOTION_MASK |
gtk.gdk.ENTER_NOTIFY_MASK |
gtk.gdk.LEAVE_NOTIFY_MASK)
invisible.window.move_resize(x, y, width, height)
return invisible
def _notify_enter(self):
if not self._hover:
self._hover = True
self.emit('enter')
def _notify_leave(self):
if self._hover:
self._hover = False
self.emit('leave')
def _enter_notify_cb(self, widget, event):
self._notify_enter()
def _leave_notify_cb(self, widget, event):
self._notify_leave()
def _drag_motion_cb(self, widget, drag_context, x, y, timestamp):
drag_context.drag_status(0, timestamp);
self._notify_enter()
return True
def _drag_leave_cb(self, widget, drag_context, timestamp):
self._notify_leave()
return True
def show(self):
for window in self._windows:
window.show()
def hide(self):
for window in self._windows:
window.hide()
def _window_stacking_changed_cb(self, screen):
for window in self._windows:
window.window.raise_()
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