Source Code for Module arcmap.visualwidget

 1  ################################################################################ 
 2  # Authors: Brian Schott (Sir Alaran) 
 3  # Copyright: Brian Schott (Sir Alaran) 
 4  # Date: Sep 23 2009 
 5  # License: 
 6  # 
 7  # This program is free software: you can redistribute it and/or modify 
 8  # it under the terms of the GNU General Public License as published by 
 9  # the Free Software Foundation, either version 3 of the License, or 
10  # (at your option) any later version. 
11  # 
12  # This program is distributed in the hope that it will be useful, 
13  # but WITHOUT ANY WARRANTY; without even the implied warranty of 
14  # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 
15  # GNU General Public License for more details. 
16  # 
17  # You should have received a copy of the GNU General Public License 
18  # along with this program.  If not, see <http://www.gnu.org/licenses/>. 
19  ################################################################################ 
20   
21  """ 
22  Contains code for previewing graphical user preferences 
23  """ 
24   
25   
26  import cairo 
27  import gtk 
28   
29  import graphics 
30  import shapes 
31  import preferences 
32   
33   
34 -class VisualWidget(gtk.DrawingArea): 
35          """ 
36          Widget for previewing preferences 
37          """ 
38          __gsignals__ = {"expose-event" : "override"} 
39   
40 -        def __init__(self): 
41                  gtk.DrawingArea.__init__(self) 
42                  self.__checkerBoard = graphics.getCheckerPattern(16) 
43   
44                  self.shapes = [] 
45                  vPoly = shapes.Polygon([ 
46                          shapes.Point(10, 10), 
47                          shapes.Point(10, 86), 
48                          shapes.Point(40, 86), 
49                          shapes.Point(86, 10), 
50                  ]) 
51                  iPoly = shapes.Polygon([ 
52                          shapes.Point(106, 10), 
53                          shapes.Point(96, 86), 
54                          shapes.Point(140, 86), 
55                          shapes.Point(120, 50), 
56                          shapes.Point(160, 10), 
57                  ]) 
58                  circle = shapes.Circle(35) 
59                  circle.setCenter(shapes.Point(200, 48)) 
60                  self.shapes.append(vPoly) 
61                  self.shapes.append(iPoly) 
62                  self.shapes.append(circle) 
63   
64                  self.set_size_request(256, 96) 
65   
66 -        def update(self): 
67                  """ 
68                  Updates the preview 
69                  """ 
70                  self.queue_draw() 
71   
72 -        def do_expose_event(self, event): 
73                  context = self.window.cairo_create() 
74                  context.set_source(self.__checkerBoard) 
75                  context.paint() 
76                  size = self.window.get_size() 
77                  graphics.drawGrid(context, 16, size[0], size[1]) 
78                  for shape in self.shapes: 
79                          graphics.drawShape(shape, context, True) 
80