Demo/sgi/cd/cdwin.py

   1 # Window interface to (some of) the CD player's vital audio functions
   2
   3 import cd
   4 import CD
   5 import stdwin
   6 from stdwinevents import *
   7 import mainloop
   8
   9 def main():
  10         player = cd.open()
  11         stdwin.setdefscrollbars(0, 0)
  12         win = stdwin.open('CD')
  13         win.player = player
  14         win.dispatch = cddispatch
  15         mainloop.register(win)
  16         win.settimer(10)
  17         mainloop.mainloop()
  18
  19 def cddispatch(type, win, detail):
  20         if type == WE_NULL:
  21                 pass
  22         elif type == WE_CLOSE:
  23                 mainloop.unregister(win)
  24                 win.close()
  25         elif type == WE_DRAW:
  26                 draw(win)
  27         elif type == WE_TIMER:
  28                 update(win)
  29         elif type == WE_MOUSE_UP:
  30                 left, top, right, bottom, v1, v2 = getgeo(win)
  31                 h, v = detail[0]
  32                 if left < h < right:
  33                         if top < v < v1:
  34                                 but1(win)
  35                         elif v1 < v < v2:
  36                                 but2(win)
  37                         elif v2 < v < bottom:
  38                                 but3(win)
  39                         else:
  40                                 stdwin.fleep()
  41
  42 def but1(win):
  43         update(win)
  44
  45 def but2(win):
  46         state = win.player.getstatus()[0]
  47         if state == CD.READY:
  48                 win.player.play(1, 1)
  49         elif state in (CD.PLAYING, CD.PAUSED):
  50                 win.player.togglepause()
  51         else:
  52                 stdwin.fleep()
  53         update(win)
  54
  55 def but3(win):
  56         win.player.stop()
  57         update(win)
  58
  59 def update(win):
  60         d = win.begindrawing()
  61         drawstatus(win, d)
  62         d.enddrawing()
  63         win.settimer(10)
  64
  65 statedict = ['ERROR', 'NODISK', 'READY', 'PLAYING', 'PAUSED', 'STILL']
  66
  67 def draw(win):
  68         left, top, right, bottom, v1, v2 = getgeo(win)
  69         d = win.begindrawing()
  70         drawstatus(win, d)
  71         box(d, left, v1, right, v2, 'Play/Pause')
  72         box(d, left, v2, right, bottom, 'Stop')
  73         d.enddrawing()
  74
  75 def drawstatus(win, d):
  76         left, top, right, bottom, v1, v2 = getgeo(win)
  77         state, track, curtime, abstime, totaltime, first, last, \
  78                 scsi_audio, cur_block, dummy = win.player.getstatus()
  79         if 0 <= state < len(statedict):
  80                 message = statedict[state]
  81         else:
  82                 message = `status`
  83         message = message + ' track ' + `track` + ' of ' + `last`
  84         d.erase((left, top), (right, v1))
  85         box(d, left, top, right, v1, message)
  86
  87 def box(d, left, top, right, bottom, label):
  88         R = (left+1, top+1), (right-1, bottom-1)
  89         width = d.textwidth(label)
  90         height = d.lineheight()
  91         h = (left + right - width) / 2
  92         v = (top + bottom - height) / 2
  93         d.box(R)
  94         d.cliprect(R)
  95         d.text((h, v), label)
  96         d.noclip()
  97
  98 def getgeo(win):
  99         (left, top), (right, bottom) = (0, 0), win.getwinsize()
 100         v1 = top + (bottom - top) / 3
 101         v2 = top + (bottom - top) * 2 / 3
 102         return left, top, right, bottom, v1, v2
 103
 104 main()