95bfd958bd
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@25140 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
242 lines
8.1 KiB
Python
242 lines
8.1 KiB
Python
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import string
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import wx
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import wx.grid as gridlib
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#---------------------------------------------------------------------------
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class MyCellEditor(gridlib.PyGridCellEditor):
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"""
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This is a sample GridCellEditor that shows you how to make your own custom
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grid editors. All the methods that can be overridden are show here. The
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ones that must be overridden are marked with "*Must Override*" in the
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docstring.
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Notice that in order to call the base class version of these special
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methods we use the method name preceded by "base_". This is because these
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methods are "virtual" in C++ so if we try to call wx.GridCellEditor.Create
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for example, then when the wxPython extension module tries to call
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ptr->Create(...) then it actually calls the derived class version which
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looks up the method in this class and calls it, causing a recursion loop.
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If you don't understand any of this, don't worry, just call the "base_"
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version instead.
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"""
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def __init__(self, log):
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self.log = log
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self.log.write("MyCellEditor ctor\n")
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gridlib.PyGridCellEditor.__init__(self)
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def Create(self, parent, id, evtHandler):
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"""
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Called to create the control, which must derive from wx.Control.
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*Must Override*
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"""
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self.log.write("MyCellEditor: Create\n")
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self._tc = wx.TextCtrl(parent, id, "")
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self._tc.SetInsertionPoint(0)
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self.SetControl(self._tc)
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if evtHandler:
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self._tc.PushEventHandler(evtHandler)
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def SetSize(self, rect):
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"""
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Called to position/size the edit control within the cell rectangle.
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If you don't fill the cell (the rect) then be sure to override
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PaintBackground and do something meaningful there.
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"""
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self.log.write("MyCellEditor: SetSize %s\n" % rect)
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self._tc.SetDimensions(rect.x, rect.y, rect.width+2, rect.height+2,
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wx.SIZE_ALLOW_MINUS_ONE)
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def Show(self, show, attr):
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"""
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Show or hide the edit control. You can use the attr (if not None)
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to set colours or fonts for the control.
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"""
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self.log.write("MyCellEditor: Show(self, %s, %s)\n" % (show, attr))
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self.base_Show(show, attr)
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def PaintBackground(self, rect, attr):
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"""
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Draws the part of the cell not occupied by the edit control. The
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base class version just fills it with background colour from the
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attribute. In this class the edit control fills the whole cell so
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don't do anything at all in order to reduce flicker.
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"""
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self.log.write("MyCellEditor: PaintBackground\n")
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def BeginEdit(self, row, col, grid):
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"""
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Fetch the value from the table and prepare the edit control
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to begin editing. Set the focus to the edit control.
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*Must Override*
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"""
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self.log.write("MyCellEditor: BeginEdit (%d,%d)\n" % (row, col))
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self.startValue = grid.GetTable().GetValue(row, col)
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self._tc.SetValue(self.startValue)
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self._tc.SetInsertionPointEnd()
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self._tc.SetFocus()
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# For this example, select the text
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self._tc.SetSelection(0, self._tc.GetLastPosition())
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def EndEdit(self, row, col, grid):
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"""
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Complete the editing of the current cell. Returns True if the value
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has changed. If necessary, the control may be destroyed.
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*Must Override*
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"""
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self.log.write("MyCellEditor: EndEdit (%d,%d)\n" % (row, col))
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changed = False
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val = self._tc.GetValue()
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if val != self.startValue:
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changed = True
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grid.GetTable().SetValue(row, col, val) # update the table
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self.startValue = ''
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self._tc.SetValue('')
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return changed
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def Reset(self):
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"""
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Reset the value in the control back to its starting value.
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*Must Override*
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"""
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self.log.write("MyCellEditor: Reset\n")
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self._tc.SetValue(self.startValue)
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self._tc.SetInsertionPointEnd()
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def IsAcceptedKey(self, evt):
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"""
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Return True to allow the given key to start editing: the base class
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version only checks that the event has no modifiers. F2 is special
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and will always start the editor.
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"""
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self.log.write("MyCellEditor: IsAcceptedKey: %d\n" % (evt.GetKeyCode()))
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## Oops, there's a bug here, we'll have to do it ourself..
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##return self.base_IsAcceptedKey(evt)
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return (not (evt.ControlDown() or evt.AltDown()) and
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evt.GetKeyCode() != wx.WXK_SHIFT)
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def StartingKey(self, evt):
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"""
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If the editor is enabled by pressing keys on the grid, this will be
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called to let the editor do something about that first key if desired.
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"""
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self.log.write("MyCellEditor: StartingKey %d\n" % evt.GetKeyCode())
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key = evt.GetKeyCode()
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ch = None
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if key in [ wx.WXK_NUMPAD0, wx.WXK_NUMPAD1, wx.WXK_NUMPAD2, wx.WXK_NUMPAD3,
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wx.WXK_NUMPAD4, wx.WXK_NUMPAD5, wx.WXK_NUMPAD6, wx.WXK_NUMPAD7,
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wx.WXK_NUMPAD8, wx.WXK_NUMPAD9
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]:
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ch = ch = chr(ord('0') + key - wx.WXK_NUMPAD0)
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elif key < 256 and key >= 0 and chr(key) in string.printable:
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ch = chr(key)
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if not evt.ShiftDown():
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ch = ch.lower()
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if ch is not None:
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# For this example, replace the text. Normally we would append it.
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#self._tc.AppendText(ch)
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self._tc.SetValue(ch)
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self._tc.SetInsertionPointEnd()
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else:
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evt.Skip()
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def StartingClick(self):
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"""
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If the editor is enabled by clicking on the cell, this method will be
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called to allow the editor to simulate the click on the control if
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needed.
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"""
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self.log.write("MyCellEditor: StartingClick\n")
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def Destroy(self):
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"""final cleanup"""
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self.log.write("MyCellEditor: Destroy\n")
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self.base_Destroy()
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def Clone(self):
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"""
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Create a new object which is the copy of this one
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*Must Override*
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"""
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self.log.write("MyCellEditor: Clone\n")
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return MyCellEditor(self.log)
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#---------------------------------------------------------------------------
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class GridEditorTest(gridlib.Grid):
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def __init__(self, parent, log):
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gridlib.Grid.__init__(self, parent, -1)
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self.log = log
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self.CreateGrid(10, 3)
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# Somebody changed the grid so the type registry takes precedence
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# over the default attribute set for editors and renderers, so we
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# have to set null handlers for the type registry before the
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# default editor will get used otherwise...
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#self.RegisterDataType(wxGRID_VALUE_STRING, None, None)
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#self.SetDefaultEditor(MyCellEditor(self.log))
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# Or we could just do it like this:
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#self.RegisterDataType(wx.GRID_VALUE_STRING,
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# wx.GridCellStringRenderer(),
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# MyCellEditor(self.log))
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# )
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# but for this example, we'll just set the custom editor on one cell
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self.SetCellEditor(1, 0, MyCellEditor(self.log))
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self.SetCellValue(1, 0, "Try to edit this box")
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# and on a column
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attr = gridlib.GridCellAttr()
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attr.SetEditor(MyCellEditor(self.log))
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self.SetColAttr(2, attr)
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self.SetCellValue(1, 2, "or any in this column")
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self.SetColSize(0, 150)
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self.SetColSize(1, 150)
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self.SetColSize(2, 150)
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#---------------------------------------------------------------------------
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class TestFrame(wx.Frame):
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def __init__(self, parent, log):
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wx.Frame.__init__(self, parent, -1, "Custom Grid Cell Editor Test",
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size=(640,480))
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grid = GridEditorTest(self, log)
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#---------------------------------------------------------------------------
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if __name__ == '__main__':
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import sys
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app = wx.PySimpleApp()
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frame = TestFrame(None, sys.stdout)
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frame.Show(True)
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app.MainLoop()
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