wxPython/demo/XmlResourceSubclass.py

   1
   2 import  wx
   3 import  wx.xrc  as  xrc
   4
   5 #----------------------------------------------------------------------
   6
   7 resourceText = r'''<?xml version="1.0"?>
   8 <resource>
   9
  10 <!-- Notice that the class IS a standard wx class, and a custom
  11      subclass is specified as "moduleName.ClassName"  Try changing
  12      the classname to one that does not exist and see what happens -->
  13
  14 <object class="wxPanel" subclass="XmlResourceSubclass.MyBluePanel" name="MyPanel">
  15     <size>200,100</size>
  16     <object class="wxStaticText" name="label1">
  17         <label>This blue panel is a class derived from wx.Panel
  18 and is loaded by a using a subclass attribute of the object tag.</label>
  19         <pos>10,10</pos>
  20     </object>
  21 </object>
  22 </resource>
  23 '''
  24
  25 #----------------------------------------------------------------------
  26
  27 class MyBluePanel(wx.Panel):
  28     def __init__(self):
  29         p = wx.PrePanel()
  30         # the Create step is done by XRC.
  31         self.PostCreate(p)
  32         self.Bind(wx.EVT_WINDOW_CREATE, self.OnCreate)
  33
  34     def OnCreate(self, evt):
  35         # This is the little bit of customization that we do for this
  36         # silly example.  It could just as easily have been done in
  37         # the resource.  We do it in the EVT_WINDOW_CREATE handler
  38         # because the window doesn't really exist yet in the __init__.
  39         self.SetBackgroundColour("BLUE")
  40         self.SetForegroundColour("WHITE")
  41
  42 #----------------------------------------------------------------------
  43
  44
  45 class TestPanel(wx.Panel):
  46     def __init__(self, parent, log):
  47         self.log = log
  48         wx.Panel.__init__(self, parent, -1)
  49
  50         # make the components
  51         label = wx.StaticText(self, -1, "The lower panel was built from this XML:")
  52         label.SetFont(wx.Font(12, wx.SWISS, wx.NORMAL, wx.BOLD))
  53
  54         text = wx.TextCtrl(self, -1, resourceText,
  55                           style=wx.TE_READONLY|wx.TE_MULTILINE)
  56         text.SetInsertionPoint(0)
  57
  58         line = wx.StaticLine(self, -1)
  59
  60         # Load the resource
  61         res = xrc.EmptyXmlResource()
  62         res.LoadFromString(resourceText)
  63
  64         # Now create a panel from the resource data
  65         panel = res.LoadPanel(self, "MyPanel")
  66
  67         # and do the layout
  68         sizer = wx.BoxSizer(wx.VERTICAL)
  69         sizer.Add(label, 0, wx.EXPAND|wx.TOP|wx.LEFT, 5)
  70         sizer.Add(text, 1, wx.EXPAND|wx.ALL, 5)
  71         sizer.Add(line, 0, wx.EXPAND)
  72         sizer.Add(panel, 1, wx.EXPAND|wx.ALL, 5)
  73
  74         self.SetSizer(sizer)
  75         self.SetAutoLayout(True)
  76
  77
  78 #----------------------------------------------------------------------
  79
  80 def runTest(frame, nb, log):
  81     win = TestPanel(nb, log)
  82     return win
  83
  84 #----------------------------------------------------------------------
  85
  86
  87
  88 overview = """<html><body>
  89 <h2><center>wx.XmlResourceSubclass</center></h2>
  90
  91 Sometimes it is necessary to use custom classes, but you still want
  92 them to be created from XRC.  The subclass XRC attribute allows you to
  93 do that.
  94
  95 </body></html>
  96 """
  97
  98
  99
 100 if __name__ == '__main__':
 101     import sys,os
 102     import run
 103     run.main(['', os.path.basename(sys.argv[0])])
 104