Keyboard.py

   1 import Views, Events
   2 import sys, curses, curses.ascii
   3
   4 class Source(Events.EventSource):
   5
   6     def __init__(self, context, win):
   7         Events.EventSource.__init__(self, sys.stdin, context)
   8         self._win = win
   9
  10     def readEvents(self):
  11         return [Events.Event(self.context(),  self._win.getch())]
  12
  13
  14 class View(Views.View):
  15
  16     def __init__(self, context, label, x, y, dx, dy, size=9, ignore_keys = ()):
  17         Views.View.__init__(self, context, label, x, y, dx, dy )
  18         self._size = size
  19         self._ignore_keys = ignore_keys
  20
  21     def updateView(self, bindings):
  22         self.win().clear()
  23         self.drawFrame()
  24         keys = bindings.keys()
  25         keys.sort()
  26         column = 2
  27         row = 1
  28         for key in keys:
  29             keyname = curses.keyname(key.code)
  30             if keyname.startswith('KEY_'):
  31                 keyname = '%s' % keyname[4:10].lower()
  32             if keyname[-2:-1] == '^':
  33                 keyname = '%sC-%s' % (keyname[:-2],keyname[-1:].lower())
  34             if curses.ascii.isupper(ord(keyname[-1:])):
  35                 keyname = '%sS-%s' % (keyname[:-1],keyname[-1:].lower())
  36             if keyname in self._ignore_keys : continue
  37             self.win().addstr(row, column, '%-6s %s'
  38                               % (keyname, bindings[key].label[:self._size]))
  39             row += 1
  40             if row >= self.dy-1:
  41                 row = 1
  42                 column += self._size+10
  43                 if column+self._size+7 >= self.dx : break
  44                 self.win().vline(1,column-2,curses.ACS_VLINE,self.dy-2)
  45         self.win().nooutrefresh()
  46
  47 def register( viewmanager,
  48               dispatcher,
  49               context,
  50               label,
  51               x,
  52               y,
  53               dx,
  54               dy,
  55               size = 9,
  56               ignore_keys = ()):
  57     viewmanager.registerView( View(context, label, x,y,dx,dy,size,ignore_keys) )
  58     dispatcher.registerSource( Source(context, viewmanager.win()) )