plot.py 文件源码

def PrintPreview(self):
        """Print-preview current plot."""
        printout = PlotPrintout(self)
        printout2 = PlotPrintout(self)
        self.preview = wx.PrintPreview(printout, printout2, self.print_data)
        if not self.preview.IsOk():
            wx.MessageDialog(self, "Print Preview failed.\n"
                             "Check that default printer is configured\n",
                             "Print error", wx.OK | wx.CENTRE).ShowModal()
        self.preview.SetZoom(40)
        # search up tree to find frame instance
        frameInst = self
        while not isinstance(frameInst, wx.Frame):
            frameInst = frameInst.GetParent()
        frame = wx.PreviewFrame(self.preview, frameInst, "Preview")
        frame.Initialize()
        frame.SetPosition(self.GetPosition())
        frame.SetSize((600, 550))
        frame.Centre(wx.BOTH)
        frame.Show(True)