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\nTopItem: %s\n" %
  49                            (self.GetItemText(self.currentItem), self.GetTopItem()))
  50
  51     def getColumnText(self, index, col):
  52         item = self.GetItem(index, col)
  53         return item.GetText()
  54
  55     def OnItemDeselected(self, evt):
  56         self.log.WriteText("OnItemDeselected: %s" % evt.m_itemIndex)
  57
  58
  59     #---------------------------------------------------
  60     # These methods are callbacks for implementing the
  61     # "virtualness" of the list...  Normally you would
  62     # determine the text, attributes and/or image based
  63     # on values from some external data source, but for
  64     # this demo we'll just calcualte them
  65     def OnGetItemText(self, item, col):
  66         return "Item %d, column %d" % (item, col)
  67
  68     def OnGetItemImage(self, item):
  69         if item % 3 == 0:
  70             return self.idx1
  71         else:
  72             return -1
  73
  74     def OnGetItemAttr(self, item):
  75         if item % 3 == 1:
  76             return self.attr1
  77         elif item % 3 == 2:
  78             return self.attr2
  79         else:
  80             return None
  81
  82
  83 #----------------------------------------------------------------------
  84
  85 def runTest(frame, nb, log):
  86     win = TestVirtualList(nb, log)
  87     return win
  88
  89 #----------------------------------------------------------------------
  90
  91
  92
  93
  94
  95 overview = """\
  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