13bf44b079
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@39236 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
232 lines
7.4 KiB
Python
232 lines
7.4 KiB
Python
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import wx
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import ScrolledWindow
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#----------------------------------------------------------------------
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class MyPrintout(wx.Printout):
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def __init__(self, canvas, log):
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wx.Printout.__init__(self)
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self.canvas = canvas
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self.log = log
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def OnBeginDocument(self, start, end):
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self.log.WriteText("MyPrintout.OnBeginDocument\n")
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return super(MyPrintout, self).OnBeginDocument(start, end)
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def OnEndDocument(self):
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self.log.WriteText("MyPrintout.OnEndDocument\n")
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super(MyPrintout, self).OnEndDocument()
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def OnBeginPrinting(self):
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self.log.WriteText("MyPrintout.OnBeginPrinting\n")
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super(MyPrintout, self).OnBeginPrinting()
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def OnEndPrinting(self):
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self.log.WriteText("MyPrintout.OnEndPrinting\n")
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super(MyPrintout, self).OnEndPrinting()
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def OnPreparePrinting(self):
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self.log.WriteText("MyPrintout.OnPreparePrinting\n")
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super(MyPrintout, self).OnPreparePrinting()
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def HasPage(self, page):
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self.log.WriteText("MyPrintout.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("MyPrintout.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("MyPrintout.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 centering 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, True)
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dc.DrawText("Page: %d" % page, marginX/2, maxY-marginY)
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return True
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#----------------------------------------------------------------------
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class TestPrintPanel(wx.Panel):
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def __init__(self, parent, frame, log):
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wx.Panel.__init__(self, parent, -1)
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self.log = log
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self.frame = frame
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self.printData = wx.PrintData()
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self.printData.SetPaperId(wx.PAPER_LETTER)
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self.printData.SetPrintMode(wx.PRINT_MODE_PRINTER)
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self.box = wx.BoxSizer(wx.VERTICAL)
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self.canvas = ScrolledWindow.MyCanvas(self)
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self.box.Add(self.canvas, 1, wx.GROW)
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subbox = wx.BoxSizer(wx.HORIZONTAL)
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btn = wx.Button(self, -1, "Page Setup")
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self.Bind(wx.EVT_BUTTON, self.OnPageSetup, btn)
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subbox.Add(btn, 1, wx.GROW | wx.ALL, 2)
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btn = wx.Button(self, -1, "Print Preview")
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self.Bind(wx.EVT_BUTTON, self.OnPrintPreview, btn)
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subbox.Add(btn, 1, wx.GROW | wx.ALL, 2)
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btn = wx.Button(self, -1, "Print")
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self.Bind(wx.EVT_BUTTON, self.OnDoPrint, btn)
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subbox.Add(btn, 1, wx.GROW | wx.ALL, 2)
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self.box.Add(subbox, 0, wx.GROW)
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self.SetAutoLayout(True)
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self.SetSizer(self.box)
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def OnPageSetup(self, evt):
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psdd = wx.PageSetupDialogData(self.printData)
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psdd.CalculatePaperSizeFromId()
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dlg = wx.PageSetupDialog(self, psdd)
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dlg.ShowModal()
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# this makes a copy of the wx.PrintData instead of just saving
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# a reference to the one inside the PrintDialogData that will
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# be destroyed when the dialog is destroyed
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self.printData = wx.PrintData( dlg.GetPageSetupData().GetPrintData() )
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dlg.Destroy()
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def OnPrintPreview(self, event):
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data = wx.PrintDialogData(self.printData)
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printout = MyPrintout(self.canvas, self.log)
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printout2 = MyPrintout(self.canvas, self.log)
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self.preview = wx.PrintPreview(printout, printout2, data)
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if not self.preview.Ok():
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self.log.WriteText("Houston, we have a problem...\n")
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return
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pfrm = wx.PreviewFrame(self.preview, self.frame, "This is a print preview")
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pfrm.Initialize()
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pfrm.SetPosition(self.frame.GetPosition())
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pfrm.SetSize(self.frame.GetSize())
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pfrm.Show(True)
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def OnDoPrint(self, event):
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pdd = wx.PrintDialogData(self.printData)
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pdd.SetToPage(2)
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printer = wx.Printer(pdd)
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printout = MyPrintout(self.canvas, self.log)
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if not printer.Print(self.frame, printout, True):
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wx.MessageBox("There was a problem printing.\nPerhaps your current printer is not set correctly?", "Printing", wx.OK)
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else:
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self.printData = wx.PrintData( printer.GetPrintDialogData().GetPrintData() )
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printout.Destroy()
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#----------------------------------------------------------------------
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def runTest(frame, nb, log):
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win = TestPrintPanel(nb, frame, log)
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return win
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#----------------------------------------------------------------------
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overview = """\
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<html>
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<body>
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<h1>PrintFramework</h1>
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This is an overview of the classes and methods used to print documents.
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It also demonstrates how to do print previews and invoke the printer
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setup dialog.
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<p>Classes demonstrated here:<P>
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<ul>
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<li><b>wx.Printout()</b> - This class encapsulates the functionality of printing out
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an application document. A new class must be derived and members overridden
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to respond to calls such as OnPrintPage and HasPage. Instances of this class
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are passed to wx.Printer.Print() or a wx.PrintPreview object to initiate
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printing or previewing.<P><p>
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<li><b>wx.PrintData()</b> - This class holds a variety of information related to
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printers and printer device contexts. This class is used to create a
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wx.PrinterDC and a wx.PostScriptDC. It is also used as a data member of
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wx.PrintDialogData and wx.PageSetupDialogData, as part of the mechanism for
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transferring data between the print dialogs and the application.<p><p>
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<li><b>wx.PrintDialog()</b> - This class represents the print and print setup
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common dialogs. You may obtain a wx.PrinterDC device context from a
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successfully dismissed print dialog.<p><p>
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<li><b>wx.PrintPreview()</b> - Objects of this class manage the print preview
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process. The object is passed a wx.Printout object, and the wx.PrintPreview
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object itself is passed to a wx.PreviewFrame object. Previewing is started by
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initializing and showing the preview frame. Unlike wxPrinter.Print, flow of
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control returns to the application immediately after the frame is shown.<p><p>
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</ul>
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<p>Other classes are also demonstrated, but this is the gist of the printer interface
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framework in wxPython.
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</body>
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</html>
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"""
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if __name__ == '__main__':
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import sys,os
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import run
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run.main(['', os.path.basename(sys.argv[0])] + sys.argv[1:])
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