Dogcows Code - chaz/openbox/blob - scripts/stackedcycle.py

   1 ###########################################################################
   2 ### Functions for cycling focus (in a 'stacked' order) between windows. ###
   3 ###########################################################################
   4
   5 ###########################################################################
   6 ###    Options that affect the behavior of the stackedcycle module.     ###
   7 ###########################################################################
   8 INCLUDE_ALL_DESKTOPS = 0
   9 """If this is non-zero then windows from all desktops will be included in
  10    the stacking list."""
  11 INCLUDE_ICONS = 1
  12 """If this is non-zero then windows which are iconified will be included
  13    in the stacking list."""
  14 INCLUDE_OMNIPRESENT = 1
  15 """If this is non-zero then windows which are on all-desktops at once will
  16    be included."""
  17 TITLE_SIZE_LIMIT = 80
  18 """This specifies a rough limit of characters for the cycling list titles.
  19    Titles which are larger will be chopped with an elipsis in their
  20    center."""
  21 ACTIVATE_WHILE_CYCLING = 1
  22 """If this is non-zero then windows will be activated as they are
  23    highlighted in the cycling list (except iconified windows)."""
  24 # See focus.AVOID_SKIP_TASKBAR
  25 # See focuscycle.RAISE_WINDOW
  26 ###########################################################################
  27
  28 def next(data):
  29     """Focus the next window."""
  30     if not data.state:
  31         raise RuntimeError("stackedcycle.next must be bound to a key" +
  32                            "combination with at least one modifier")
  33     _o.cycle(data, 1)
  34
  35 def previous(data):
  36     """Focus the previous window."""
  37     if not data.state:
  38         raise RuntimeError("stackedcycle.previous must be bound to a key" +
  39                            "combination with at least one modifier")
  40     _o.cycle(data, 0)
  41
  42 ###########################################################################
  43 ###########################################################################
  44
  45 ###########################################################################
  46 ###      Internal stuff, should not be accessed outside the module.     ###
  47 ###########################################################################
  48
  49 import otk
  50 import ob
  51 import focus
  52 import focuscycle
  53
  54 class _cycledata:
  55     def __init__(self):
  56         self.cycling = 0
  57
  58     def createpopup(self):
  59         self.style = self.screen.style()
  60         self.widget = otk.Widget(ob.openbox, self.style, otk.Widget.Vertical,
  61                                  0, self.style.bevelWidth(), 1)
  62         self.widget.setTexture(self.style.titlebarFocusBackground())
  63
  64     def destroypopup(self):
  65         self.menuwidgets = []
  66         self.widget = 0
  67
  68     def shouldadd(self, client):
  69         """Determines if a client should be added to the list."""
  70         curdesk = self.screen.desktop()
  71         desk = client.desktop()
  72
  73         if not client.normal(): return 0
  74         if not (client.canFocus() or client.focusNotify()): return 0
  75         if focus.AVOID_SKIP_TASKBAR and client.skipTaskbar(): return 0
  76
  77         if INCLUDE_ICONS and client.iconic(): return 1
  78         if INCLUDE_OMNIPRESENT and desk == 0xffffffff: return 1
  79         if INCLUDE_ALL_DESKTOPS: return 1
  80         if desk == curdesk: return 1
  81
  82         return 0
  83
  84     def populatelist(self):
  85         """Populates self.clients and self.menuwidgets, and then shows and
  86            positions the cycling popup."""
  87
  88         self.widget.hide()
  89
  90         try:
  91             current = self.clients[self.menupos]
  92         except IndexError: current = 0
  93         oldpos = self.menupos
  94         self.menupos = -1
  95
  96         # get the list of clients, keeping iconic windows at the bottom
  97         self.clients = []
  98         iconic_clients = []
  99         for c in focus._clients:
 100             if c.iconic(): iconic_clients.append(c)
 101             else: self.clients.append(c)
 102         self.clients.extend(iconic_clients)
 103
 104         font = self.style.labelFont()
 105         longest = 0
 106         height = font.height()
 107
 108         # make the widgets
 109         i = 0
 110         self.menuwidgets = []
 111         while i < len(self.clients):
 112             c = self.clients[i]
 113             if not self.shouldadd(c):
 114                 # make the clients and menuwidgets lists match
 115                 self.clients.pop(i)
 116                 continue
 117
 118             w = otk.FocusLabel(self.widget)
 119             if current and c.window() == current.window():
 120                 self.menupos = i
 121                 w.focus()
 122             else:
 123                 w.unfocus()
 124             self.menuwidgets.append(w)
 125
 126             if c.iconic(): t = c.iconTitle()
 127             else: t = c.title()
 128             if len(t) > TITLE_SIZE_LIMIT: # limit the length of titles
 129                 t = t[:TITLE_SIZE_LIMIT / 2 - 2] + "..." + \
 130                     t[0 - TITLE_SIZE_LIMIT / 2 - 2:]
 131             length = font.measureString(t)
 132             if length > longest: longest = length
 133             w.setText(t)
 134
 135             i += 1
 136
 137         # the window we were on may be gone
 138         if self.menupos < 0:
 139             # try stay at the same spot in the menu
 140             if oldpos >= len(self.clients):
 141                 self.menupos = len(self.clients) - 1
 142             else:
 143                 self.menupos = oldpos
 144
 145         # fit to the largest item in the menu
 146         for w in self.menuwidgets:
 147             w.fitSize(longest, height)
 148
 149         # show or hide the list and its child widgets
 150         if len(self.clients) > 1:
 151             area = self.screeninfo.rect()
 152             self.widget.update()
 153             self.widget.move(area.x() + (area.width() -
 154                                          self.widget.width()) / 2,
 155                              area.y() + (area.height() -
 156                                          self.widget.height()) / 2)
 157             self.widget.show(1)
 158
 159     def activatetarget(self, final):
 160         try:
 161             client = self.clients[self.menupos]
 162         except IndexError: return # empty list makes for this
 163
 164         # move the to client's desktop if required
 165         if not (client.iconic() or client.desktop() == 0xffffffff or \
 166                 client.desktop() == self.screen.desktop()):
 167             root = self.screeninfo.rootWindow()
 168             ob.send_client_msg(root, otk.atoms.net_current_desktop,
 169                                root, client.desktop())
 170
 171         # send a net_active_window message for the target
 172         if final or not client.iconic():
 173             if final: r = focuscycle.RAISE_WINDOW
 174             else: r = 0
 175             ob.send_client_msg(self.screeninfo.rootWindow(),
 176                                otk.atoms.openbox_active_window,
 177                                client.window(), final, r)
 178
 179     def cycle(self, data, forward):
 180         if not self.cycling:
 181             self.cycling = 1
 182             focus._disable = 1
 183             self.state = data.state
 184             self.screen = ob.openbox.screen(data.screen)
 185             self.screeninfo = otk.display.screenInfo(data.screen)
 186             self.menupos = 0
 187             self.createpopup()
 188             self.clients = [] # so it doesnt try start partway through the list
 189             self.populatelist()
 190
 191             ob.kgrab(self.screen.number(), _grabfunc)
 192             # the pointer grab causes pointer events during the keyboard grab
 193             # to go away, which means we don't get enter notifies when the
 194             # popup disappears, screwing up the focus
 195             ob.mgrab(self.screen.number())
 196
 197         if not len(self.clients): return # don't both doing anything
 198
 199         self.menuwidgets[self.menupos].unfocus()
 200         if forward:
 201             self.menupos += 1
 202         else:
 203             self.menupos -= 1
 204         # wrap around
 205         if self.menupos < 0: self.menupos = len(self.clients) - 1
 206         elif self.menupos >= len(self.clients): self.menupos = 0
 207         self.menuwidgets[self.menupos].focus()
 208         if ACTIVATE_WHILE_CYCLING:
 209             self.activatetarget(0) # activate, but dont deiconify/unshade/raise
 210
 211     def grabfunc(self, data):
 212         done = 0
 213         notreverting = 1
 214         # have all the modifiers this started with been released?
 215         if (data.action == ob.KeyAction.Release and
 216             not self.state & data.state):
 217             done = 1
 218         # has Escape been pressed?
 219         elif data.action == ob.KeyAction.Press and data.key == "Escape":
 220             done = 1
 221             notreverting = 0
 222             # revert
 223             self.menupos = 0
 224
 225         if done:
 226             self.cycling = 0
 227             focus._disable = 0
 228             # activate, and deiconify/unshade/raise
 229             self.activatetarget(notreverting)
 230             self.destroypopup()
 231             ob.kungrab()
 232             ob.mungrab()
 233
 234 def _newwindow(data):
 235     if _o.cycling: _o.populatelist()
 236
 237 def _closewindow(data):
 238     if _o.cycling: _o.populatelist()
 239
 240 def _grabfunc(data):
 241     _o.grabfunc(data)
 242
 243 ob.ebind(ob.EventAction.NewWindow, _newwindow)
 244 ob.ebind(ob.EventAction.CloseWindow, _closewindow)
 245
 246 _o = _cycledata()
 247
 248 print "Loaded stackedcycle.py"