| | 1 | |
| | 2 | import wx |
| | 3 | import images |
| | 4 | |
| | 5 | #---------------------------------------------------------------------- |
| | 6 | |
| | 7 | class TestVirtualList(wx.ListCtrl): |
| | 8 | def __init__(self, parent, log): |
| | 9 | wx.ListCtrl.__init__( |
| | 10 | self, parent, -1, |
| | 11 | style=wx.LC_REPORT|wx.LC_VIRTUAL|wx.LC_HRULES|wx.LC_VRULES |
| | 12 | ) |
| | 13 | |
| | 14 | self.log = log |
| | 15 | |
| | 16 | self.il = wx.ImageList(16, 16) |
| | 17 | self.idx1 = self.il.Add(images.getSmilesBitmap()) |
| | 18 | self.SetImageList(self.il, wx.IMAGE_LIST_SMALL) |
| | 19 | |
| | 20 | |
| | 21 | self.InsertColumn(0, "First") |
| | 22 | self.InsertColumn(1, "Second") |
| | 23 | self.InsertColumn(2, "Third") |
| | 24 | self.SetColumnWidth(0, 175) |
| | 25 | self.SetColumnWidth(1, 175) |
| | 26 | self.SetColumnWidth(2, 175) |
| | 27 | |
| | 28 | self.SetItemCount(1000000) |
| | 29 | |
| | 30 | self.attr1 = wx.ListItemAttr() |
| | 31 | self.attr1.SetBackgroundColour("yellow") |
| | 32 | |
| | 33 | self.attr2 = wx.ListItemAttr() |
| | 34 | self.attr2.SetBackgroundColour("light blue") |
| | 35 | |
| | 36 | self.Bind(wx.EVT_LIST_ITEM_SELECTED, self.OnItemSelected) |
| | 37 | self.Bind(wx.EVT_LIST_ITEM_ACTIVATED, self.OnItemActivated) |
| | 38 | self.Bind(wx.EVT_LIST_ITEM_DESELECTED, self.OnItemDeselected) |
| | 39 | |
| | 40 | |
| | 41 | def OnItemSelected(self, event): |
| | 42 | self.currentItem = event.m_itemIndex |
| | 43 | self.log.WriteText('OnItemSelected: "%s", "%s", "%s", "%s"\n' % |
| | 44 | (self.currentItem, |
| | 45 | self.GetItemText(self.currentItem), |
| | 46 | self.getColumnText(self.currentItem, 1), |
| | 47 | self.getColumnText(self.currentItem, 2))) |
| | 48 | |
| | 49 | def OnItemActivated(self, event): |
| | 50 | self.currentItem = event.m_itemIndex |
| | 51 | self.log.WriteText("OnItemActivated: %s\nTopItem: %s\n" % |
| | 52 | (self.GetItemText(self.currentItem), self.GetTopItem())) |
| | 53 | |
| | 54 | def getColumnText(self, index, col): |
| | 55 | item = self.GetItem(index, col) |
| | 56 | return item.GetText() |
| | 57 | |
| | 58 | def OnItemDeselected(self, evt): |
| | 59 | self.log.WriteText("OnItemDeselected: %s" % evt.m_itemIndex) |
| | 60 | |
| | 61 | |
| | 62 | #--------------------------------------------------- |
| | 63 | # These methods are callbacks for implementing the |
| | 64 | # "virtualness" of the list... Normally you would |
| | 65 | # determine the text, attributes and/or image based |
| | 66 | # on values from some external data source, but for |
| | 67 | # this demo we'll just calculate them |
| | 68 | def OnGetItemText(self, item, col): |
| | 69 | return "Item %d, column %d" % (item, col) |
| | 70 | |
| | 71 | def OnGetItemImage(self, item): |
| | 72 | if item % 3 == 0: |
| | 73 | return self.idx1 |
| | 74 | else: |
| | 75 | return -1 |
| | 76 | |
| | 77 | def OnGetItemAttr(self, item): |
| | 78 | if item % 3 == 1: |
| | 79 | return self.attr1 |
| | 80 | elif item % 3 == 2: |
| | 81 | return self.attr2 |
| | 82 | else: |
| | 83 | return None |
| | 84 | |
| | 85 | |
| | 86 | #---------------------------------------------------------------------- |
| | 87 | |
| | 88 | def runTest(frame, nb, log): |
| | 89 | win = TestVirtualList(nb, log) |
| | 90 | return win |
| | 91 | |
| | 92 | #---------------------------------------------------------------------- |
| | 93 | |
| | 94 | |
| | 95 | overview = """\ |
| | 96 | This example demonstrates the ListCtrl's Virtual List features. A Virtual list |
| | 97 | can contain any number of cells, but data is not loaded into the control itself. |
| | 98 | It is loaded on demand via virtual methods <code>OnGetItemText(), OnGetItemImage()</code>, |
| | 99 | and <code>OnGetItemAttr()</code>. This greatly reduces the amount of memory required |
| | 100 | without limiting what can be done with the list control itself. |
| | 101 | """ |
| | 102 | |
| | 103 | |
| | 104 | |
| | 105 | if __name__ == '__main__': |
| | 106 | import sys,os |
| | 107 | import run |
| | 108 | run.main(['', os.path.basename(sys.argv[0])] + sys.argv[1:]) |
| | 109 | |
projects / wxWidgets.git / blame_incremental