Demo/sgi/cd/cdwin.py

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