1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
|
"""
@package mapdisp.gprint
@brief Print context and utility functions for printing
contents of map display window.
Classes:
- gprint::MapPrint
- gprint::PrintOptions
(C) 2007-2011 by the GRASS Development Team
This program is free software under the GNU General Public License
(>=v2). Read the file COPYING that comes with GRASS for details.
@author Michael Barton (Arizona State University)
"""
import wx
from core.gcmd import GMessage
class MapPrint(wx.Printout):
def __init__(self, canvas):
wx.Printout.__init__(self)
self.canvas = canvas
def OnBeginDocument(self, start, end):
return super().OnBeginDocument(start, end)
def OnEndDocument(self):
super().OnEndDocument()
def OnBeginPrinting(self):
super().OnBeginPrinting()
def OnEndPrinting(self):
super().OnEndPrinting()
def OnPreparePrinting(self):
super().OnPreparePrinting()
def HasPage(self, page):
if page <= 2:
return True
else:
return False
def GetPageInfo(self):
return (1, 2, 1, 2)
def OnPrintPage(self, page):
dc = self.GetDC()
# -------------------------------------------
# One possible method of setting scaling factors...
maxX, maxY = self.canvas.GetSize()
# Let's have at least 50 device units margin
marginX = 10
marginY = 10
# Add the margin to the graphic size
maxX = maxX + (2 * marginX)
maxY = maxY + (2 * marginY)
# Get the size of the DC in pixels
(w, h) = dc.GetSizeTuple()
# Calculate a suitable scaling factor
scaleX = float(w) / maxX
scaleY = float(h) / maxY
# Use x or y scaling factor, whichever fits on the DC
actualScale = min(scaleX, scaleY)
# Calculate the position on the DC for centering the graphic
posX = (w - (self.canvas.GetSize()[0] * actualScale)) / 2.0
posY = (h - (self.canvas.GetSize()[1] * actualScale)) / 2.0
# Set the scale and origin
dc.SetUserScale(actualScale, actualScale)
dc.SetDeviceOrigin(int(posX), int(posY))
# -------------------------------------------
self.canvas.pdc.DrawToDC(dc)
# prints a page number on the page
# dc.DrawText("Page: %d" % page, marginX/2, maxY-marginY)
return True
class PrintOptions(wx.Object):
def __init__(self, parent, mapwin):
self.mapframe = parent
self.mapwin = mapwin
self.printData = None
def setup(self):
if self.printData:
return
self.printData = wx.PrintData()
self.printData.SetPaperId(wx.PAPER_LETTER)
self.printData.SetPrintMode(wx.PRINT_MODE_PRINTER)
def OnPageSetup(self, event):
self.setup()
psdd = wx.PageSetupDialogData(self.printData)
psdd.CalculatePaperSizeFromId()
dlg = wx.PageSetupDialog(self.mapwin, psdd)
dlg.ShowModal()
# this makes a copy of the wx.PrintData instead of just saving
# a reference to the one inside the PrintDialogData that will
# be destroyed when the dialog is destroyed
self.printData = wx.PrintData(dlg.GetPageSetupData().GetPrintData())
dlg.Destroy()
def OnPrintPreview(self, event):
self.setup()
data = wx.PrintDialogData(self.printData)
printout = MapPrint(self.mapwin)
printout2 = MapPrint(self.mapwin)
self.preview = wx.PrintPreview(printout, printout2, data)
if not self.preview.Ok():
wx.MessageBox("There was a problem printing this display\n", wx.OK)
return
pfrm = wx.PreviewFrame(self.preview, self.mapframe, "Print preview")
pfrm.Initialize()
pfrm.SetPosition(self.mapframe.GetPosition())
pfrm.SetSize(self.mapframe.GetClientSize())
pfrm.Show(True)
def OnDoPrint(self, event):
self.setup()
pdd = wx.PrintDialogData(self.printData)
# set number of pages/copies
pdd.SetToPage(1)
printer = wx.Printer(pdd)
printout = MapPrint(self.mapwin)
if not printer.Print(self.mapframe, printout, True):
GMessage(
_(
"There was a problem printing.\n"
"Perhaps your current printer is not set correctly?"
)
)
else:
self.printData = wx.PrintData(printer.GetPrintDialogData().GetPrintData())
printout.Destroy()
|
