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1
2import wx
3import ScrolledWindow
4
5#----------------------------------------------------------------------
6
7ID_Setup = wx.NewId()
8ID_Preview = wx.NewId()
9ID_Print = wx.NewId()
10
11class MyPrintout(wx.Printout):
12 def __init__(self, canvas, log):
13 wx.Printout.__init__(self)
14 self.canvas = canvas
15 self.log = log
16
17 def OnBeginDocument(self, start, end):
18 self.log.WriteText("wx.Printout.OnBeginDocument\n")
19 return self.base_OnBeginDocument(start, end)
20
21 def OnEndDocument(self):
22 self.log.WriteText("wx.Printout.OnEndDocument\n")
23 self.base_OnEndDocument()
24
25 def OnBeginPrinting(self):
26 self.log.WriteText("wx.Printout.OnBeginPrinting\n")
27 self.base_OnBeginPrinting()
28
29 def OnEndPrinting(self):
30 self.log.WriteText("wx.Printout.OnEndPrinting\n")
31 self.base_OnEndPrinting()
32
33 def OnPreparePrinting(self):
34 self.log.WriteText("wx.Printout.OnPreparePrinting\n")
35 self.base_OnPreparePrinting()
36
37 def HasPage(self, page):
38 self.log.WriteText("wx.Printout.HasPage: %d\n" % page)
39 if page <= 2:
40 return True
41 else:
42 return False
43
44 def GetPageInfo(self):
45 self.log.WriteText("wx.Printout.GetPageInfo\n")
46 return (1, 2, 1, 2)
47
48 def OnPrintPage(self, page):
49 self.log.WriteText("wx.Printout.OnPrintPage: %d\n" % page)
50 dc = self.GetDC()
51
52 #-------------------------------------------
53 # One possible method of setting scaling factors...
54
55 maxX = self.canvas.getWidth()
56 maxY = self.canvas.getHeight()
57
58 # Let's have at least 50 device units margin
59 marginX = 50
60 marginY = 50
61
62 # Add the margin to the graphic size
63 maxX = maxX + (2 * marginX)
64 maxY = maxY + (2 * marginY)
65
66 # Get the size of the DC in pixels
67 (w, h) = dc.GetSizeTuple()
68
69 # Calculate a suitable scaling factor
70 scaleX = float(w) / maxX
71 scaleY = float(h) / maxY
72
73 # Use x or y scaling factor, whichever fits on the DC
74 actualScale = min(scaleX, scaleY)
75
76 # Calculate the position on the DC for centering the graphic
77 posX = (w - (self.canvas.getWidth() * actualScale)) / 2.0
78 posY = (h - (self.canvas.getHeight() * actualScale)) / 2.0
79
80 # Set the scale and origin
81 dc.SetUserScale(actualScale, actualScale)
82 dc.SetDeviceOrigin(int(posX), int(posY))
83
84 #-------------------------------------------
85
86 self.canvas.DoDrawing(dc, True)
87 dc.DrawText("Page: %d" % page, (marginX/2, maxY-marginY))
88
89 return True
90
91
92#----------------------------------------------------------------------
93
94
95class TestPrintPanel(wx.Panel):
96 def __init__(self, parent, frame, log):
97 wx.Panel.__init__(self, parent, -1)
98 self.log = log
99 self.frame = frame
100
101 self.printData = wx.PrintData()
102 self.printData.SetPaperId(wx.PAPER_LETTER)
103 self.printData.SetPrintMode(wx.PRINT_MODE_PRINTER)
104
105 self.box = wx.BoxSizer(wx.VERTICAL)
106 self.canvas = ScrolledWindow.MyCanvas(self)
107 self.box.Add(self.canvas, 1, wx.GROW)
108
109 subbox = wx.BoxSizer(wx.HORIZONTAL)
110 btn = wx.Button(self, ID_Setup, "Print Setup")
111 self.Bind(wx.EVT_BUTTON, self.OnPrintSetup, btn)
112 subbox.Add(btn, 1, wx.GROW | wx.ALL, 2)
113
114 btn = wx.Button(self, ID_Preview, "Print Preview")
115 self.Bind(wx.EVT_BUTTON, self.OnPrintPreview, btn)
116 subbox.Add(btn, 1, wx.GROW | wx.ALL, 2)
117
118 btn = wx.Button(self, ID_Print, "Print")
119 self.Bind(wx.EVT_BUTTON, self.OnDoPrint, btn)
120 subbox.Add(btn, 1, wx.GROW | wx.ALL, 2)
121
122 self.box.Add(subbox, 0, wx.GROW)
123
124 self.SetAutoLayout(True)
125 self.SetSizer(self.box)
126
127
128 def OnPrintSetup(self, event):
129 data = wx.PrintDialogData(self.printData)
130 printerDialog = wx.PrintDialog(self, data)
131 printerDialog.GetPrintDialogData().SetSetupDialog(True)
132 printerDialog.ShowModal();
133 self.printData = printerDialog.GetPrintDialogData().GetPrintData()
134 printerDialog.Destroy()
135
136
137 def OnPrintPreview(self, event):
138 self.log.WriteText("OnPrintPreview\n")
139 data = wx.PrintDialogData(self.printData)
140 printout = MyPrintout(self.canvas, self.log)
141 printout2 = MyPrintout(self.canvas, self.log)
142 self.preview = wx.PrintPreview(printout, printout2, data)
143
144 if not self.preview.Ok():
145 self.log.WriteText("Houston, we have a problem...\n")
146 return
147
148 frame = wx.PreviewFrame(self.preview, self.frame, "This is a print preview")
149
150 frame.Initialize()
151 frame.SetPosition(self.frame.GetPosition())
152 frame.SetSize(self.frame.GetSize())
153 frame.Show(True)
154
155
156
157 def OnDoPrint(self, event):
158 pdd = wx.PrintDialogData(self.printData)
159 pdd.SetToPage(2)
160 printer = wx.Printer(pdd)
161 printout = MyPrintout(self.canvas, self.log)
162
163 if not printer.Print(self.frame, printout, True):
164 wx.MessageBox("There was a problem printing.\nPerhaps your current printer is not set correctly?", "Printing", wx.OK)
165 else:
166 self.printData = printer.GetPrintDialogData().GetPrintData()
167 printout.Destroy()
168
169
170#----------------------------------------------------------------------
171
172def runTest(frame, nb, log):
173 win = TestPrintPanel(nb, frame, log)
174 return win
175
176
177#----------------------------------------------------------------------
178
179
180
181
182
183overview = """\
184<html>
185<body>
186<h1>PrintFramework</h1>
187
188This is an overview of the classes and methods used to print documents.
189It also demonstrates how to do print previews and invoke the printer
190setup dialog.
191
192<p>Classes demonstrated here:<P>
193<ul>
194 <li><b>wx.Printout()</b> - This class encapsulates the functionality of printing out
195 an application document. A new class must be derived and members overridden
196 to respond to calls such as OnPrintPage and HasPage. Instances of this class
197 are passed to wx.Printer.Print() or a wx.PrintPreview object to initiate
198 printing or previewing.<P><p>
199
200 <li><b>wx.PrintData()</b> - This class holds a variety of information related to
201 printers and printer device contexts. This class is used to create a
202 wx.PrinterDC and a wx.PostScriptDC. It is also used as a data member of
203 wx.PrintDialogData and wx.PageSetupDialogData, as part of the mechanism for
204 transferring data between the print dialogs and the application.<p><p>
205
206 <li><b>wx.PrintDialog()</b> - This class represents the print and print setup
207 common dialogs. You may obtain a wx.PrinterDC device context from a
208 successfully dismissed print dialog.<p><p>
209
210 <li><b>wx.PrintPreview()</b> - Objects of this class manage the print preview
211 process. The object is passed a wx.Printout object, and the wx.PrintPreview
212 object itself is passed to a wx.PreviewFrame object. Previewing is started by
213 initializing and showing the preview frame. Unlike wxPrinter.Print, flow of
214 control returns to the application immediately after the frame is shown.<p><p>
215</ul>
216
217<p>Other classes are also demonstrated, but this is the gist of the printer interface
218framework in wxPython.
219
220</body>
221</html>
222
223"""
224
225
226if __name__ == '__main__':
227 import sys,os
228 import run
229 run.main(['', os.path.basename(sys.argv[0])] + sys.argv[1:])
230