def OnPreviewVideo(self, evt):
h = TrackList.background_size()['height']
max_height = 480
scale = min(1, max_height / (h or max_height))
wx.GetApp().RunInBackground(mix.preview_thread,
TrackList.all_tracks(),
**TrackList.background_size(),
scale=scale)
def GetSelectedTracks(self):
"""Returns a list of selected tracks."""
return [t for i, t in enumerate(TrackList.all_tracks())
if self.m_listCtrl.IsSelected(i)]
def OnPreviewAudio(self, evt):
wx.GetApp().RunInBackground(mix.preview_thread,
TrackList.all_tracks(),
**TrackList.background_size(),
audio_only=True)