wxPython/demo/wxListCtrl_virtual.py

   1
   2 from wxPython.wx import *
   3 import images
   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.il = wxImageList(16, 16)
  14         self.idx1 = self.il.Add(images.getSmilesBitmap())
  15         self.SetImageList(self.il, wxIMAGE_LIST_SMALL)
  16
  17
  18         self.InsertColumn(0, "First")
  19         self.InsertColumn(1, "Second")
  20         self.InsertColumn(2, "Third")
  21         self.SetColumnWidth(0, 175)
  22         self.SetColumnWidth(1, 175)
  23         self.SetColumnWidth(2, 175)
  24
  25         self.SetItemCount(1000000)
  26
  27         self.attr1 = wxListItemAttr()
  28         self.attr1.SetBackgroundColour("yellow")
  29
  30         self.attr2 = wxListItemAttr()
  31         self.attr2.SetBackgroundColour("light blue")
  32
  33         EVT_LIST_ITEM_SELECTED(self, self.GetId(), self.OnItemSelected)
  34         EVT_LIST_ITEM_ACTIVATED(self, self.GetId(), self.OnItemActivated)
  35         EVT_LIST_ITEM_DESELECTED(self, self.GetId(), self.OnItemDeselected)
  36
  37
  38     def OnItemSelected(self, event):
  39         self.currentItem = event.m_itemIndex
  40         self.log.WriteText('OnItemSelected: "%s", "%s", "%s", "%s"\n' %
  41                            (self.currentItem,
  42                             self.GetItemText(self.currentItem),
  43                             self.getColumnText(self.currentItem, 1),
  44                             self.getColumnText(self.currentItem, 2)))
  45
  46     def OnItemActivated(self, event):
  47         self.currentItem = event.m_itemIndex
  48         self.log.WriteText("OnItemActivated: %s\n" % self.GetItemText(self.currentItem))
  49
  50     def getColumnText(self, index, col):
  51         item = self.GetItem(index, col)
  52         return item.GetText()
  53
  54     def OnItemDeselected(self, evt):
  55         print evt.m_itemIndex
  56
  57
  58     #---------------------------------------------------
  59     # These methods are callbacks for implementing the
  60     # "virtualness" of the list...  Normally you would
  61     # determine the text, attributes and/or image based
  62     # on values from some external data source, but for
  63     # this demo we'll just calcualte them
  64     def OnGetItemText(self, item, col):
  65         return "Item %d, column %d" % (item, col)
  66
  67     def OnGetItemImage(self, item):
  68         if item % 3 == 0:
  69             return self.idx1
  70         else:
  71             return -1
  72
  73     def OnGetItemAttr(self, item):
  74         if item % 3 == 1:
  75             return self.attr1
  76         elif item % 3 == 2:
  77             return self.attr2
  78         else:
  79             return None
  80
  81
  82 #----------------------------------------------------------------------
  83
  84 def runTest(frame, nb, log):
  85     win = TestVirtualList(nb, log)
  86     return win
  87
  88 #----------------------------------------------------------------------
  89
  90
  91
  92
  93
  94 overview = """\
  95 """
  96
  97
  98
  99 if __name__ == '__main__':
 100     import sys,os
 101     import run
 102     run.main(['', os.path.basename(sys.argv[0])])
 103