IDEFrame.py 文件源码

def OnPrintPage(self, page):
        dc = self.GetDC()
        dc.SetUserScale(1.0, 1.0)
        dc.SetDeviceOrigin(0, 0)
        dc.printing = not self.Preview

        # Get the size of the DC in pixels
        ppiPrinterX, ppiPrinterY = self.GetPPIPrinter()
        ppiScreenX, ppiScreenY = self.GetPPIScreen()
        pw, ph = self.GetPageSizePixels()
        dw, dh = dc.GetSizeTuple()
        Xscale = (float(dw) * float(ppiPrinterX)) / (float(pw) * 25.4)
        Yscale = (float(dh) * float(ppiPrinterY)) / (float(ph) * 25.4)

        fontsize = self.FontSize * Yscale
        text_margin = self.TextMargin * Yscale

        margin_left = self.Margins[0].x * Xscale
        margin_top = self.Margins[0].y * Yscale
        area_width = dw - self.Margins[1].x * Xscale - margin_left
        area_height = dh - self.Margins[1].y * Yscale - margin_top

        dc.SetPen(MiterPen(wx.BLACK))
        dc.SetBrush(wx.TRANSPARENT_BRUSH)
        dc.DrawRectangle(margin_left, margin_top, area_width, area_height)

        dc.SetFont(wx.Font(fontsize, wx.DEFAULT, wx.NORMAL, wx.NORMAL))
        dc.SetTextForeground(wx.BLACK)
        block_name = " - ".join(self.Viewer.GetTagName().split("::")[1:])
        text_width, text_height = dc.GetTextExtent(block_name)
        dc.DrawText(block_name, margin_left, margin_top - text_height - self.TextMargin)
        dc.DrawText(_("Page: %d") % page, margin_left, margin_top + area_height + self.TextMargin)

        # Calculate the position on the DC for centering the graphic
        posX = area_width * ((page - 1) % self.PageGrid[0])
        posY = area_height * ((page - 1) / self.PageGrid[0])

        scaleX = float(area_width) / float(self.PageSize[0])
        scaleY = float(area_height) / float(self.PageSize[1])
        scale = min(scaleX, scaleY)

        # Set the scale and origin
        dc.SetDeviceOrigin(-posX + margin_left, -posY + margin_top)
        dc.SetClippingRegion(posX, posY, self.PageSize[0] * scale, self.PageSize[1] * scale)
        dc.SetUserScale(scale, scale)

        self.Viewer.DoDrawing(dc, True)

        return True