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

   1 ##############################################################################
   2 ### The history window placement algorithm. ebind historyplacement.place   ###
   3 ### to the ob.EventAction.PlaceWindow event to use it.                     ###
   4 ##############################################################################
   5
   6 import windowplacement # fallback routines
   7
   8 ##############################################################################
   9 ###       Options for the historyplacement module (Options in the          ###
  10 ###                windowplacement module also apply!)                     ###
  11 ##############################################################################
  12 IGNORE_REQUESTED_POSITIONS = 0
  13 """When non-zero, the placement algorithm will attempt to place windows even
  14    when they request a position (like XMMS). Note this only applies to normal
  15    windows, not to special cases like desktops and docks."""
  16 DONT_DUPLICATE = 1
  17 """When non-zero, if 2 copies of the same match in history are to be placed
  18    before one of them is closed (so it would be placed over-top of the last
  19    one), this will cause the second window to not be placed via history, and
  20    the FALLBACK will be used instead."""
  21 FALLBACK = windowplacement.random
  22 """The window placement algorithm that will be used when history placement
  23    does not have a place for the window."""
  24 CONFIRM_CALLBACK = 0
  25 """Set this to a function to have the function called before attempting to
  26    place a window via history. If the function returns a non-zero, then an
  27    attempt will be made to place the window. If it returns zero, the
  28    FALLBACK method will be directly applied instead."""
  29 FILENAME = 'historydb'
  30 """The name of the file where history data will be stored. The number of
  31    the screen is appended onto this filename."""
  32 ##############################################################################
  33
  34 def place(data):
  35     """Place a window usingthe history placement algorithm."""
  36     _place(data)
  37
  38 ###########################################################################
  39 ###########################################################################
  40
  41 ###########################################################################
  42 ###      Internal stuff, should not be accessed outside the module.     ###
  43 ###########################################################################
  44
  45 import otk
  46 import ob
  47 import os
  48 import string
  49
  50 _data = []
  51
  52 class _state:
  53     def __init__(self, appname, appclass, role, x, y):
  54         self.appname = appname
  55         self.appclass = appclass
  56         self.role = role
  57         self.x = x
  58         self.y = y
  59         self.placed = 0
  60     def __eq__(self, other):
  61         if self.appname == other.appname and \
  62            self.appclass == other.appclass and \
  63            self.role == other.role:
  64             return 1
  65         return 0
  66
  67 def _load(data):
  68     global _data
  69     try:
  70         file = open(os.environ['HOME'] + '/.openbox/' + FILENAME+"." +
  71                     str(data.screen), 'r')
  72         # read data
  73         for line in file.readlines():
  74             line = line[:-1] # drop the '\n'
  75             try:
  76                 s = string.split(line, '\0')
  77                 state = _state(s[0], s[1], s[2],
  78                                string.atoi(s[3]), string.atoi(s[4]))
  79
  80                 while len(_data)-1 < data.screen:
  81                     _data.append([])
  82                 _data[data.screen].append(state)
  83
  84             except ValueError: pass
  85             except IndexError: pass
  86         file.close()
  87     except IOError: pass
  88
  89 def _save(data):
  90     global _data
  91     file = open(os.environ['HOME']+'/.openbox/'+FILENAME+"."+str(data.screen),
  92                 'w')
  93     if file:
  94         while len(_data)-1 < data.screen:
  95             _data.append([])
  96         for i in _data[data.screen]:
  97             file.write(i.appname + '\0' +
  98                        i.appclass + '\0' +
  99                        i.role + '\0' +
 100                        str(i.x) + '\0' +
 101                        str(i.y) + '\n')
 102         file.close()
 103
 104 def _create_state(data):
 105     global _data
 106     area = data.client.area()
 107     return _state(data.client.appName(), data.client.appClass(),
 108                   data.client.role(), area.x(), area.y())
 109
 110 def _find(screen, state):
 111     global _data
 112     try:
 113         return _data[screen].index(state)
 114     except ValueError:
 115         return -1
 116     except IndexError:
 117         while len(_data)-1 < screen:
 118             _data.append([])
 119         return _find(screen, state) # try again
 120
 121 def _place(data):
 122     global _data
 123     if data.client:
 124         if not (IGNORE_REQUESTED_POSITIONS and data.client.normal()):
 125             if data.client.positionRequested(): return
 126         state = _create_state(data)
 127         try:
 128             if not CONFIRM_CALLBACK or CONFIRM_CALLBACK(data):
 129                 print "looking for : " + state.appname +  " : " + \
 130                       state.appclass + " : " + state.role
 131
 132                 i = _find(data.screen, state)
 133                 if i >= 0:
 134                     coords = _data[data.screen][i]
 135                     print "Found in history ("+str(coords.x)+","+\
 136                           str(coords.y)+")"
 137                     if not (DONT_DUPLICATE and coords.placed):
 138                         data.client.move(coords.x, coords.y)
 139                         coords.placed = 1
 140                         return
 141                     else:
 142                         print "Already placed another window there"
 143                 else:
 144                     print "No match in history"
 145         except TypeError:
 146             pass
 147     if FALLBACK: FALLBACK(data)
 148
 149 def _save_window(data):
 150     global _data
 151     if data.client:
 152         state = _create_state(data)
 153         print "looking for : " + state.appname +  " : " + state.appclass + \
 154               " : " + state.role
 155
 156         i = _find(data.screen, state)
 157         if i >= 0:
 158             print "replacing"
 159             _data[data.screen][i] = state # replace it
 160         else:
 161             print "appending"
 162             _data[data.screen].append(state)
 163
 164 ob.ebind(ob.EventAction.CloseWindow, _save_window)
 165 ob.ebind(ob.EventAction.Startup, _load)
 166 ob.ebind(ob.EventAction.Shutdown, _save)
 167
 168 print "Loaded historyplacement.py"