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ninoborges |
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##Printer2
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from wxPython.wx import *
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class MyPrintout(wxPrintout):
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def __init__(self, canvas):
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wxPrintout.__init__(self)
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self.canvas = canvas
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def OnBeginDocument(self, start, end):
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#self.log.WriteText("wxPrintout.OnBeginDocument\n")
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return self.base_OnBeginDocument(start, end)
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def OnEndDocument(self):
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#self.log.WriteText("wxPrintout.OnEndDocument\n")
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self.base_OnEndDocument()
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def OnBeginPrinting(self):
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#self.log.WriteText("wxPrintout.OnBeginPrinting\n")
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self.base_OnBeginPrinting()
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def OnEndPrinting(self):
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#self.log.WriteText("wxPrintout.OnEndPrinting\n")
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self.base_OnEndPrinting()
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def OnPreparePrinting(self):
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#self.log.WriteText("wxPrintout.OnPreparePrinting\n")
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self.base_OnPreparePrinting()
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def HasPage(self, page):
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#self.log.WriteText("wxPrintout.HasPage: %d\n" % page)
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if page <= 2:
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return True
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else:
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return False
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def GetPageInfo(self):
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#self.log.WriteText("wxPrintout.GetPageInfo\n")
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return (1, 2, 1, 2)
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def OnPrintPage(self, page):
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#self.log.WriteText("wxPrintout.OnPrintPage: %d\n" % page)
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dc = self.GetDC()
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#-------------------------------------------
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# One possible method of setting scaling factors...
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maxX = self.canvas.GetWidth()
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maxY = self.canvas.GetHeight()
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# Let's have at least 50 device units margin
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marginX = 50
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marginY = 50
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# Add the margin to the graphic size
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maxX = maxX + (2 * marginX)
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maxY = maxY + (2 * marginY)
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# Get the size of the DC in pixels
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(w, h) = dc.GetSizeTuple()
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# Calculate a suitable scaling factor
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scaleX = float(w) / maxX
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scaleY = float(h) / maxY
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# Use x or y scaling factor, whichever fits on the DC
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actualScale = min(scaleX, scaleY)
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# Calculate the position on the DC for centring the graphic
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posX = (w - (self.canvas.getWidth() * actualScale)) / 2.0
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posY = (h - (self.canvas.getHeight() * actualScale)) / 2.0
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# Set the scale and origin
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dc.SetUserScale(actualScale, actualScale)
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dc.SetDeviceOrigin(int(posX), int(posY))
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#-------------------------------------------
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self.canvas.DoDrawing(dc)
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dc.DrawText("Page: %d" % page, marginX/2, maxY-marginY)
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return True |
