wxPython/demo/wxListCtrl_virtual.py

   1
   2 from wxPython.wx import *
   3
   4 #----------------------------------------------------------------------
   5
   6 class TestVirtualList(wxListCtrl):
   7     def __init__(self, parent, log):
   8         wxListCtrl.__init__(self, parent, -1,
   9                             style=wxLC_REPORT|wxLC_VIRTUAL|wxLC_HRULES|wxLC_VRULES)
  10         self.log = log
  11
  12         self.InsertColumn(0, "First")
  13         self.InsertColumn(1, "Second")
  14         self.InsertColumn(2, "Third")
  15         self.SetColumnWidth(0, 175)
  16         self.SetColumnWidth(1, 175)
  17         self.SetColumnWidth(2, 175)
  18
  19         self.SetItemCount(1000000)
  20
  21         self.attr1 = wxListItemAttr()
  22         self.attr1.SetBackgroundColour("yellow")
  23
  24         self.attr2 = wxListItemAttr()
  25         self.attr2.SetBackgroundColour("light blue")
  26
  27         EVT_LIST_ITEM_SELECTED(self, self.GetId(), self.OnItemSelected)
  28         EVT_LIST_ITEM_ACTIVATED(self, self.GetId(), self.OnItemActivated)
  29
  30
  31     def OnItemSelected(self, event):
  32         self.currentItem = event.m_itemIndex
  33         self.log.WriteText('OnItemSelected: "%s", "%s", "%s", "%s"\n' %
  34                            (self.currentItem,
  35                             self.GetItemText(self.currentItem),
  36                             self.getColumnText(self.currentItem, 1),
  37                             self.getColumnText(self.currentItem, 2)))
  38
  39     def OnItemActivated(self, event):
  40         self.currentItem = event.m_itemIndex
  41         self.log.WriteText("OnItemActivated: %s\n" % self.GetItemText(self.currentItem))
  42
  43     def getColumnText(self, index, col):
  44         item = self.GetItem(index, col)
  45         return item.GetText()
  46
  47     #---------------------------------------------------
  48     # These methods are callbacks for implementing the
  49     # "virtualness" of the list...
  50     def OnGetItemText(self, item, col):
  51         return "Item %d, column %d" % (item, col)
  52
  53
  54     def OnGetItemImage(self, item):
  55         return -1  # if used you should return the index in the ImageList
  56
  57
  58     def OnGetItemAttr(self, item):
  59         if item % 3 == 1:
  60             return self.attr1
  61         elif item % 3 == 2:
  62             return self.attr2
  63         else:
  64             return None
  65
  66
  67 #----------------------------------------------------------------------
  68
  69 def runTest(frame, nb, log):
  70     win = TestVirtualList(nb, log)
  71     return win
  72
  73 #----------------------------------------------------------------------
  74
  75
  76
  77
  78
  79 overview = """\
  80 """
  81
  82
  83
  84 if __name__ == '__main__':
  85     import sys,os
  86     import run
  87     run.main(['', os.path.basename(sys.argv[0])])
  88