import wx import os FONTSIZE = 10 class TextDocPrintout(wx.Printout): """ A printout class that is able to print simple text documents. Does not handle page numbers or titles, and it assumes that no lines are longer than what will fit within the page width. Those features are left as an exercise for the reader. ;-) """ def __init__(self, text, title, margins): wx.Printout.__init__(self, title) self.lines = text.split('\n') self.margins = margins def HasPage(self, page): return page <= self.numPages def GetPageInfo(self): return (1, self.numPages, 1, self.numPages) def CalculateScale(self, dc): # Scale the DC such that the printout is roughly the same as # the screen scaling. ppiPrinterX, ppiPrinterY = self.GetPPIPrinter() ppiScreenX, ppiScreenY = self.GetPPIScreen() logScale = float(ppiPrinterX)/float(ppiScreenX) # Now adjust if the real page size is reduced (such as when # drawing on a scaled wx.MemoryDC in the Print Preview.) If # page width == DC width then nothing changes, otherwise we # scale down for the DC. pw, ph = self.GetPageSizePixels() dw, dh = dc.GetSize() scale = logScale * float(dw)/float(pw) # Set the DC's scale. dc.SetUserScale(scale, scale) # Find the logical units per millimeter (for calculating the # margins) self.logUnitsMM = float(ppiPrinterX)/(logScale*25.4) def CalculateLayout(self, dc): # Determine the position of the margins and the # page/line height topLeft, bottomRight = self.margins dw, dh = dc.GetSize() self.x1 = topLeft.x * self.logUnitsMM self.y1 = topLeft.y * self.logUnitsMM self.x2 = dc.DeviceToLogicalXRel(dw) - bottomRight.x * self.logUnitsMM self.y2 = dc.DeviceToLogicalYRel(dh) - bottomRight.y * self.logUnitsMM # use a 1mm buffer around the inside of the box, and a few # pixels between each line self.pageHeight = self.y2 - self.y1 - 2*self.logUnitsMM font = wx.Font(FONTSIZE, wx.TELETYPE, wx.NORMAL, wx.NORMAL) dc.SetFont(font) self.lineHeight = dc.GetCharHeight() self.linesPerPage = int(self.pageHeight/self.lineHeight) def OnPreparePrinting(self): # calculate the number of pages dc = self.GetDC() self.CalculateScale(dc) self.CalculateLayout(dc) self.numPages = len(self.lines) / self.linesPerPage if len(self.lines) % self.linesPerPage != 0: self.numPages += 1 def OnPrintPage(self, page): dc = self.GetDC() self.CalculateScale(dc) self.CalculateLayout(dc) # draw a page outline at the margin points dc.SetPen(wx.Pen("black", 0)) dc.SetBrush(wx.TRANSPARENT_BRUSH) r = wx.RectPP((self.x1, self.y1), (self.x2, self.y2)) dc.DrawRectangleRect(r) dc.SetClippingRect(r) # Draw the text lines for this page line = (page-1) * self.linesPerPage x = self.x1 + self.logUnitsMM y = self.y1 + self.logUnitsMM while line < (page * self.linesPerPage): dc.DrawText(self.lines[line], x, y) y += self.lineHeight line += 1 if line >= len(self.lines): break return True class PrintFrameworkSample(wx.Frame): def __init__(self): wx.Frame.__init__(self, None, size=(640, 480), title="Print Framework Sample") self.CreateStatusBar() # A text widget to display the doc and let it be edited self.tc = wx.TextCtrl(self, -1, "", style=wx.TE_MULTILINE|wx.TE_DONTWRAP) self.tc.SetFont(wx.Font(FONTSIZE, wx.TELETYPE, wx.NORMAL, wx.NORMAL)) filename = os.path.join(os.path.dirname(__file__), "sample-text.txt") self.tc.SetValue(open(filename).read()) self.tc.Bind(wx.EVT_SET_FOCUS, self.OnClearSelection) wx.CallAfter(self.tc.SetInsertionPoint, 0) # Create the menu and menubar menu = wx.Menu() item = menu.Append(-1, "Page Setup...\tF5", "Set up page margins and etc.") self.Bind(wx.EVT_MENU, self.OnPageSetup, item) item = menu.Append(-1, "Print Preview...\tF6", "View the printout on-screen") self.Bind(wx.EVT_MENU, self.OnPrintPreview, item) item = menu.Append(-1, "Print...\tF7", "Print the document") self.Bind(wx.EVT_MENU, self.OnPrint, item) menu.AppendSeparator() ## item = menu.Append(-1, "Test other stuff...\tF9", "") ## self.Bind(wx.EVT_MENU, self.OnPrintTest, item) ## menu.AppendSeparator() item = menu.Append(wx.ID_EXIT, "E&xit\tCtrl-Q", "Close this application") self.Bind(wx.EVT_MENU, self.OnExit, item) menubar = wx.MenuBar() menubar.Append(menu, "&File") self.SetMenuBar(menubar) # initialize the print data and set some default values self.pdata = wx.PrintData() self.pdata.SetPaperId(wx.PAPER_LETTER) self.pdata.SetOrientation(wx.PORTRAIT) self.margins = (wx.Point(15,15), wx.Point(15,15)) def OnExit(self, evt): self.Close() def OnClearSelection(self, evt): evt.Skip() wx.CallAfter(self.tc.SetInsertionPoint, self.tc.GetInsertionPoint()) def OnPageSetup(self, evt): data = wx.PageSetupDialogData() data.SetPrintData(self.pdata) data.SetDefaultMinMargins(True) data.SetMarginTopLeft(self.margins[0]) data.SetMarginBottomRight(self.margins[1]) dlg = wx.PageSetupDialog(self, data) if dlg.ShowModal() == wx.ID_OK: data = dlg.GetPageSetupData() self.pdata = wx.PrintData(data.GetPrintData()) # force a copy self.pdata.SetPaperId(data.GetPaperId()) self.margins = (data.GetMarginTopLeft(), data.GetMarginBottomRight()) dlg.Destroy() def OnPrintPreview(self, evt): data = wx.PrintDialogData(self.pdata) text = self.tc.GetValue() printout1 = TextDocPrintout(text, "title", self.margins) printout2 = None #TextDocPrintout(text, "title", self.margins) preview = wx.PrintPreview(printout1, printout2, data) if not preview.Ok(): wx.MessageBox("Unable to create PrintPreview!", "Error") else: # create the preview frame such that it overlays the app frame frame = wx.PreviewFrame(preview, self, "Print Preview", pos=self.GetPosition(), size=self.GetSize()) frame.Initialize() frame.Show() def OnPrint(self, evt): data = wx.PrintDialogData(self.pdata) printer = wx.Printer(data) text = self.tc.GetValue() printout = TextDocPrintout(text, "title", self.margins) useSetupDialog = True if not printer.Print(self, printout, useSetupDialog) \ and printer.GetLastError() == wx.PRINTER_ERROR: wx.MessageBox( "There was a problem printing.\n" "Perhaps your current printer is not set correctly?", "Printing Error", wx.OK) else: data = printer.GetPrintDialogData() self.pdata = wx.PrintData(data.GetPrintData()) # force a copy printout.Destroy() def OnPrintTest(self, evt): data = wx.PrintDialogData(self.pdata) dlg = wx.PrintDialog(self, data) if dlg.ShowModal() == wx.ID_OK: data = dlg.GetPrintDialogData() print print "GetFromPage:", data.GetFromPage() print "GetToPage:", data.GetToPage() print "GetMinPage:", data.GetMinPage() print "GetMaxPage:", data.GetMaxPage() print "GetNoCopies:", data.GetNoCopies() print "GetAllPages:", data.GetAllPages() print "GetSelection:", data.GetSelection() print "GetCollate:", data.GetCollate() print "GetPrintToFile:", data.GetPrintToFile() self.pdata = wx.PrintData(data.GetPrintData()) print print "GetPrinterName:", self.pdata.GetPrinterName() dlg.Destroy() app = wx.PySimpleApp() frm = PrintFrameworkSample() frm.Show() app.MainLoop()