plot.py 文件源码

def OnSize(self, event):
        # The Buffer init is done here, to make sure the buffer is always
        # the same size as the Window
        Size = self.canvas.GetClientSize()
        if Size.width <= 0 or Size.height <= 0:
            return
        Size.width = max(1, Size.width)
        Size.height = max(1, Size.height)
        # Make new offscreen bitmap: this bitmap will always have the
        # current drawing in it, so it can be used to save the image to
        # a file, or whatever.
        #self._Buffer = wx.Bitmap(Size.width, Size.height)
        if IsNotWX4():
            self._img = wx.EmptyImage(Size.width,Size.height)
            self._Buffer = wx.BitmapFromImage(self._img)
        else:
            self._img = wx.Image(Size.width,Size.height)
            self._Buffer = wx.Bitmap(self._img)
        self._Buffer.SetHeight(Size.height)
        self._Buffer.SetWidth(Size.width)
        self._setSize()
        self.last_PointLabel = None  # reset pointLabel
        if self.last_draw is None:
            self.Clear()
        else:
            graphics, xSpec, ySpec = self.last_draw
            self._Draw(graphics, xSpec, ySpec)