python - Non-flicker interactive Image sequence display with wxpython -


i've created interactive image sequence viewer. viewer work if there no flickering. read bit double buffering , find bit confusing. need straight on explanation/code should remove flickering in program. in of examples there explanation resizing. in other hand not need that, window size-fixed. approach should take fix flickering?

code:

import wx  class main_frame(wx.frame):     def __init__(self):         wx.frame.__init__(self, none, wx.id_any, 'main window', size=(1300, 750))         self.panel = wx.panel(self, -1)         self.centre() #------------------------------------------------------------------------------         self.frames = []         l=1         while l < 365:             self.frames.append(wx.image('images/{0}.png'.format(l), wx.bitmap_type_any))             print l             l+=1         self.slider = wx.slider(self.panel, wx.id_any, size = (500,-1))         self.slider.setmax(356)         l = self.slider.getvalue()          self.image = wx.staticbitmap(self.panel,-1,wx.bitmapfromimage(self.frames[l]))  #------------------------------------------------------------------------------          self.sizer = wx.boxsizer(wx.horizontal)         self.sizer_v = wx.boxsizer(wx.vertical)         self.sizer_v.add(self.image, 0, wx.centre | wx.all, 5)         self.sizer_v.add(self.slider, 0, wx.centre | wx.all, 5)         self.sizer.add(self.sizer_v, 1, wx.expand | wx.all | wx.center, 5)         self.panel.setsizer(self.sizer)          self.bind(wx.evt_slider, self.onslider, self.slider)      def onslider(self,e):         l = self.slider.getvalue()         self.image.setbitmap(wx.bitmapfromimage(self.frames[l]))  if __name__ == '__main__':     app = wx.app()     frame = main_frame().show()     app.mainloop()

wx.staticbitmap works best when static, in unchanging. think instead of using wx.staticbitmap use panel binds handler evt_paint event. when want image change self.panel.currentbitmap = self.frames[i] followed self.panel.refresh(). (or better move functionality panel class better encapsulation.) in evt_paint handler wx.paintdc , drawbitmap of current bitmap. also, keep bitmaps in list instead of images save conversion time when moving slider.


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