wxPython/demo/MediaCtrl.py

   1
   2 import wx
   3 import wx.media
   4 import os
   5
   6 #----------------------------------------------------------------------
   7
   8 class StaticText(wx.StaticText):
   9     """
  10     A StaticText that only updates the label if it has changed, to
  11     help reduce potential flicker since these controls would be
  12     updated very frequently otherwise.
  13     """
  14     def SetLabel(self, label):
  15         if label <> self.GetLabel():
  16             wx.StaticText.SetLabel(self, label)
  17
  18 #----------------------------------------------------------------------
  19
  20 class TestPanel(wx.Panel):
  21     def __init__(self, parent, log):
  22         self.log = log
  23         wx.Panel.__init__(self, parent, -1,
  24                           style=wx.TAB_TRAVERSAL|wx.CLIP_CHILDREN)
  25
  26         # Create some controls
  27         try:
  28             self.mc = wx.media.MediaCtrl(self, style=wx.SIMPLE_BORDER)
  29         except NotImplementedError:
  30             self.Destroy()
  31             raise
  32
  33         self.Bind(wx.media.EVT_MEDIA_LOADED, self.OnMediaLoaded)
  34
  35         btn1 = wx.Button(self, -1, "Load File")
  36         self.Bind(wx.EVT_BUTTON, self.OnLoadFile, btn1)
  37
  38         btn2 = wx.Button(self, -1, "Play")
  39         self.Bind(wx.EVT_BUTTON, self.OnPlay, btn2)
  40         self.playBtn = btn2
  41
  42         btn3 = wx.Button(self, -1, "Pause")
  43         self.Bind(wx.EVT_BUTTON, self.OnPause, btn3)
  44
  45         btn4 = wx.Button(self, -1, "Stop")
  46         self.Bind(wx.EVT_BUTTON, self.OnStop, btn4)
  47
  48         slider = wx.Slider(self, -1, 0, 0, 0)
  49         self.slider = slider
  50         slider.SetMinSize((150, -1))
  51         self.Bind(wx.EVT_SLIDER, self.OnSeek, slider)
  52
  53         self.st_size = StaticText(self, -1, size=(100,-1))
  54         self.st_len  = StaticText(self, -1, size=(100,-1))
  55         self.st_pos  = StaticText(self, -1, size=(100,-1))
  56
  57
  58         # setup the layout
  59         sizer = wx.GridBagSizer(5,5)
  60         sizer.Add(self.mc, (1,1), span=(5,1))#, flag=wx.EXPAND)
  61         sizer.Add(btn1, (1,3))
  62         sizer.Add(btn2, (2,3))
  63         sizer.Add(btn3, (3,3))
  64         sizer.Add(btn4, (4,3))
  65         sizer.Add(slider, (6,1), flag=wx.EXPAND)
  66         sizer.Add(self.st_size, (1, 5))
  67         sizer.Add(self.st_len,  (2, 5))
  68         sizer.Add(self.st_pos,  (3, 5))
  69         self.SetSizer(sizer)
  70
  71         #self.DoLoadFile(os.path.abspath("data/testmovie.mpg"))
  72         wx.CallAfter(self.DoLoadFile, os.path.abspath("data/testmovie.mpg"))
  73
  74         self.timer = wx.Timer(self)
  75         self.Bind(wx.EVT_TIMER, self.OnTimer)
  76         self.timer.Start(100)
  77
  78
  79
  80     def OnLoadFile(self, evt):
  81         dlg = wx.FileDialog(self, message="Choose a media file",
  82                             defaultDir=os.getcwd(), defaultFile="",
  83                             style=wx.OPEN | wx.CHANGE_DIR )
  84         if dlg.ShowModal() == wx.ID_OK:
  85             path = dlg.GetPath()
  86             self.DoLoadFile(path)
  87         dlg.Destroy()
  88
  89
  90     def DoLoadFile(self, path):
  91         self.playBtn.Disable()
  92         #noLog = wx.LogNull()
  93         if not self.mc.Load(path):
  94             wx.MessageBox("Unable to load %s: Unsupported format?" % path,
  95                           "ERROR",
  96                           wx.ICON_ERROR | wx.OK)
  97         else:
  98             self.mc.SetInitialSize()
  99             self.GetSizer().Layout()
 100             self.slider.SetRange(0, self.mc.Length())
 101
 102     def OnMediaLoaded(self, evt):
 103         self.playBtn.Enable()
 104
 105     def OnPlay(self, evt):
 106         if not self.mc.Play():
 107             wx.MessageBox("Unable to Play media : Unsupported format?",
 108                           "ERROR",
 109                           wx.ICON_ERROR | wx.OK)
 110         else:
 111             self.mc.SetInitialSize()
 112             self.GetSizer().Layout()
 113             self.slider.SetRange(0, self.mc.Length())
 114
 115     def OnPause(self, evt):
 116         self.mc.Pause()
 117
 118     def OnStop(self, evt):
 119         self.mc.Stop()
 120
 121
 122     def OnSeek(self, evt):
 123         offset = self.slider.GetValue()
 124         self.mc.Seek(offset)
 125
 126     def OnTimer(self, evt):
 127         offset = self.mc.Tell()
 128         self.slider.SetValue(offset)
 129         self.st_size.SetLabel('size: %s' % self.mc.GetBestSize())
 130         self.st_len.SetLabel('length: %d seconds' % (self.mc.Length()/1000))
 131         self.st_pos.SetLabel('position: %d' % offset)
 132
 133     def ShutdownDemo(self):
 134         self.timer.Stop()
 135         del self.timer
 136
 137 #----------------------------------------------------------------------
 138
 139 def runTest(frame, nb, log):
 140     try:
 141         win = TestPanel(nb, log)
 142         return win
 143     except NotImplementedError:
 144         from Main import MessagePanel
 145         win = MessagePanel(nb, 'wx.MediaCtrl is not available on this platform.',
 146                            'Sorry', wx.ICON_WARNING)
 147         return win
 148
 149
 150 #----------------------------------------------------------------------
 151
 152
 153
 154 overview = """<html><body>
 155 <h2><center>wx.MediaCtrl</center></h2>
 156
 157 wx.MediaCtrl is a class that allows a way to convieniently display
 158 various types of media, such as videos, audio files, natively through
 159 native codecs.  Several different formats of audio and video files are
 160 supported, but some formats may not be playable on all platforms or
 161 may require specific codecs to be installed.
 162
 163 <p>
 164 wx.MediaCtrl uses native backends to render media, for example on Windows
 165 there is a ActiveMovie/DirectShow backend, and on Macintosh there is a
 166 QuickTime backend.
 167 <p>
 168 wx.MediaCtrl is not currently available on unix systems.
 169
 170 </body></html>
 171 """
 172
 173
 174
 175 if __name__ == '__main__':
 176     import sys,os
 177     import run
 178     run.main(['', os.path.basename(sys.argv[0])] + sys.argv[1:])