25ecabd93b
the demo framework. git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@43385 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
135 lines
4.5 KiB
Python
135 lines
4.5 KiB
Python
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import wx
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import images
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#----------------------------------------------------------------------
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class TestVirtualList(wx.ListCtrl):
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def __init__(self, parent, log):
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wx.ListCtrl.__init__(
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self, parent, -1,
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style=wx.LC_REPORT|wx.LC_VIRTUAL|wx.LC_HRULES|wx.LC_VRULES
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)
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self.log = log
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self.il = wx.ImageList(16, 16)
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self.idx1 = self.il.Add(images.getSmilesBitmap())
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self.SetImageList(self.il, wx.IMAGE_LIST_SMALL)
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self.InsertColumn(0, "First")
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self.InsertColumn(1, "Second")
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self.InsertColumn(2, "Third")
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self.SetColumnWidth(0, 175)
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self.SetColumnWidth(1, 175)
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self.SetColumnWidth(2, 175)
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self.SetItemCount(1000000)
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self.attr1 = wx.ListItemAttr()
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self.attr1.SetBackgroundColour("yellow")
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self.attr2 = wx.ListItemAttr()
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self.attr2.SetBackgroundColour("light blue")
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self.Bind(wx.EVT_LIST_ITEM_SELECTED, self.OnItemSelected)
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self.Bind(wx.EVT_LIST_ITEM_ACTIVATED, self.OnItemActivated)
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self.Bind(wx.EVT_LIST_ITEM_DESELECTED, self.OnItemDeselected)
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def OnItemSelected(self, event):
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self.currentItem = event.m_itemIndex
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self.log.WriteText('OnItemSelected: "%s", "%s", "%s", "%s"\n' %
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(self.currentItem,
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self.GetItemText(self.currentItem),
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self.getColumnText(self.currentItem, 1),
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self.getColumnText(self.currentItem, 2)))
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def OnItemActivated(self, event):
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self.currentItem = event.m_itemIndex
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self.log.WriteText("OnItemActivated: %s\nTopItem: %s\n" %
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(self.GetItemText(self.currentItem), self.GetTopItem()))
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def getColumnText(self, index, col):
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item = self.GetItem(index, col)
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return item.GetText()
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def OnItemDeselected(self, evt):
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self.log.WriteText("OnItemDeselected: %s" % evt.m_itemIndex)
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#---------------------------------------------------
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# These methods are callbacks for implementing the
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# "virtualness" of the list... Normally you would
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# determine the text, attributes and/or image based
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# on values from some external data source, but for
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# this demo we'll just calculate them
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def OnGetItemText(self, item, col):
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return "Item %d, column %d" % (item, col)
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def OnGetItemImage(self, item):
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if item % 3 == 0:
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return self.idx1
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else:
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return -1
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def OnGetItemAttr(self, item):
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if item % 3 == 1:
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return self.attr1
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elif item % 3 == 2:
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return self.attr2
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else:
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return None
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class TestVirtualListPanel(wx.Panel):
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def __init__(self, parent, log):
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wx.Panel.__init__(self, parent, -1, style=wx.WANTS_CHARS)
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self.log = log
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sizer = wx.BoxSizer(wx.VERTICAL)
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if wx.Platform == "__WXMAC__" and \
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hasattr(wx.GetApp().GetTopWindow(), "LoadDemo"):
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self.useNative = wx.CheckBox(self, -1, "Use native listctrl")
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self.useNative.SetValue(
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not wx.SystemOptions.GetOptionInt("mac.listctrl.always_use_generic") )
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self.Bind(wx.EVT_CHECKBOX, self.OnUseNative, self.useNative)
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sizer.Add(self.useNative, 0, wx.ALL | wx.ALIGN_RIGHT, 4)
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self.list = TestVirtualList(self, self.log)
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sizer.Add(self.list, 1, wx.EXPAND)
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self.SetSizer(sizer)
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self.SetAutoLayout(True)
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def OnUseNative(self, event):
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wx.SystemOptions.SetOptionInt("mac.listctrl.always_use_generic", not event.IsChecked())
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wx.GetApp().GetTopWindow().LoadDemo("ListCtrl_virtual")
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#----------------------------------------------------------------------
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def runTest(frame, nb, log):
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win = TestVirtualListPanel(nb, log)
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return win
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#----------------------------------------------------------------------
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overview = """\
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This example demonstrates the ListCtrl's Virtual List features. A Virtual list
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can contain any number of cells, but data is not loaded into the control itself.
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It is loaded on demand via virtual methods <code>OnGetItemText(), OnGetItemImage()</code>,
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and <code>OnGetItemAttr()</code>. This greatly reduces the amount of memory required
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without limiting what can be done with the list control itself.
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"""
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if __name__ == '__main__':
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import sys,os
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import run
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run.main(['', os.path.basename(sys.argv[0])] + sys.argv[1:])
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