wxPython/demo/VirtualListCtrl.py

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