panel/handle.py

   1 # vim:set noet ts=4:
   2 #
   3 # ibus - The Input Bus
   4 #
   5 # Copyright (c) 2007-2008 Huang Peng <shawn.p.huang@gmail.com>
   6 #
   7 # This library is free software; you can redistribute it and/or
   8 # modify it under the terms of the GNU Lesser General Public
   9 # License as published by the Free Software Foundation; either
  10 # version 2 of the License, or (at your option) any later version.
  11 #
  12 # This library is distributed in the hope that it will be useful,
  13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 # GNU Lesser General Public License for more details.
  16 #
  17 # You should have received a copy of the GNU Lesser General Public
  18 # License along with this program; if not, write to the
  19 # Free Software Foundation, Inc., 59 Temple Place, Suite 330,
  20 # Boston, MA  02111-1307  USA
  21
  22 import gtk
  23 import gtk.gdk as gdk
  24 import gobject
  25
  26 class Handle (gtk.EventBox):
  27         def __init__ (self):
  28                 gtk.EventBox.__init__ (self)
  29                 self.set_visible_window (False)
  30                 self.set_size_request (10, -1)
  31                 self.set_events (
  32                         gdk.EXPOSURE_MASK | \
  33                         gdk.BUTTON_PRESS_MASK | \
  34                         gdk.BUTTON_RELEASE_MASK | \
  35                         gdk.BUTTON1_MOTION_MASK)
  36
  37                 self._move_begined = False
  38
  39                 root = gdk.get_default_root_window ()
  40                 workarea = root.property_get ("_NET_WORKAREA")[2]
  41
  42         def do_button_press_event (self, event):
  43                 if event.button == 1:
  44                         root = gdk.get_default_root_window ()
  45                         desktop = root.property_get ("_NET_CURRENT_DESKTOP")[2][0]
  46                         self._workarea = root.property_get ("_NET_WORKAREA")[2][desktop * 4: (desktop + 1) * 4]
  47                         self._move_begined = True
  48                         toplevel = self.get_toplevel ()
  49                         x, y = toplevel.get_position ()
  50                         self._press_pos = event.x_root - x, event.y_root - y
  51                         self.window.set_cursor (gdk.Cursor (gdk.FLEUR))
  52                         return True
  53                 return False
  54
  55         def do_button_release_event (self, event):
  56                 if event.button == 1:
  57                         self._move_begined = False
  58                         del self._press_pos
  59                         del self._workarea
  60                         self.window.set_cursor (gdk.Cursor (gdk.LEFT_PTR))
  61                         return True
  62
  63                 return False
  64
  65         def do_motion_notify_event (self, event):
  66                 if not self._move_begined:
  67                         return
  68                 toplevel = self.get_toplevel ()
  69                 x, y = toplevel.get_position ()
  70                 x  = int (event.x_root - self._press_pos[0])
  71                 y  = int (event.y_root - self._press_pos[1])
  72
  73                 if x < self._workarea[0] and x > self._workarea[0] - 16:
  74                         x = self._workarea[0]
  75                 if y < self._workarea[1] and y > self._workarea[1] - 16:
  76                         y = self._workarea[1]
  77
  78                 w, h = toplevel.get_size ()
  79                 if x + w > self._workarea[0] + self._workarea[2] and \
  80                         x + w < self._workarea[0] + self._workarea[2] + 16:
  81                         x = self._workarea[0] + self._workarea[2] - w
  82                 if y + h > self._workarea[1] + self._workarea[3] and \
  83                         y + h < self._workarea[1] + self._workarea[3] + 16:
  84                         y =  self._workarea[1] + self._workarea[3] - h
  85
  86                 toplevel.move (x, y)
  87
  88         def do_expose_event (self, event):
  89                 self.style.paint_handle (
  90                                         self.window,
  91                                         gtk.STATE_NORMAL,
  92                                         gtk.SHADOW_OUT,
  93                                         event.area,
  94                                         self,
  95                                         "",
  96                                         self.allocation.x, self.allocation.y,
  97                                         10, self.allocation.height,
  98                                         gtk.ORIENTATION_VERTICAL)
  99                 return True
 100
 101 gobject.type_register (Handle, "IBusHandle")
 102
 103