wxPython/demo/wxGridBagSizer.py

   1
   2 import wx                  # This module uses the new wx namespace
   3
   4 #----------------------------------------------------------------------
   5 gbsDescription = """\
   6 The wxGridBagSizer is similar to the wxFlexGridSizer except the items are explicitly positioned
   7 in a virtual cell of the layout grid, and column or row spanning is allowed.  For example, this
   8 static text is positioned at (0,0) and it spans 7 columns.
   9 """
  10
  11
  12 class TestFrame(wx.Frame):
  13     def __init__(self):
  14         wx.Frame.__init__(self, None, -1, "wxGridBagSizer")
  15         p = wx.Panel(self, -1)
  16         gbs = self.gbs = wx.GridBagSizer()
  17
  18         gbs.Add( wx.StaticText(p, -1, gbsDescription),
  19                  (0,0), (1,7), wx.ALIGN_CENTER | wx.ALL, 5)
  20
  21
  22         gbs.Add( wx.TextCtrl(p, -1, "pos(1,0)"), (1,0) )
  23         gbs.Add( wx.TextCtrl(p, -1, "pos(1,1)"), (1,1) )
  24         gbs.Add( wx.TextCtrl(p, -1, "pos(2,0)"), (2,0) )
  25         gbs.Add( wx.TextCtrl(p, -1, "pos(2,1)"), (2,1) )
  26
  27         gbs.Add( wx.TextCtrl(p, -1, "pos(3,2), span(1,2)\nthis row and col are growable", style=wx.TE_MULTILINE),
  28                  (3,2), (1,2), flag=wx.EXPAND )
  29
  30         gbs.Add( wx.TextCtrl(p, -1, "pos(4,3), span(3,1)", style=wx.TE_MULTILINE),
  31                  (4,3), (3,1), wx.EXPAND)
  32
  33         gbs.Add( wx.TextCtrl(p, -1, "pos(5,4)"), (5,4), flag=wx.EXPAND )
  34         gbs.Add( wx.TextCtrl(p, -1, "pos(6,5)"), (6,5), flag=wx.EXPAND )
  35         gbs.Add( wx.TextCtrl(p, -1, "pos(7,6)"), (7,6) )
  36
  37         moveBtn1 = wx.Button(p, -1, "Move this to (3,6)")
  38         moveBtn2 = wx.Button(p, -1, "Move this to (3,6)");
  39         gbs.Add( moveBtn1, (10,2) )
  40         gbs.Add( moveBtn2, (10,3) )
  41
  42         hideBtn = wx.Button(p, -1, "Hide this item -->")
  43         gbs.Add(hideBtn, (12, 3))
  44
  45         hideTxt = wx.TextCtrl(p, -1, "pos(12,4), size(150, -1)", size = (150,-1))
  46         gbs.Add( hideTxt, (12,4) )
  47
  48         showBtn = wx.Button(p, -1, "<-- Show it again")
  49         gbs.Add(showBtn, (12, 5))
  50         showBtn.Disable()
  51         self.hideBtn = hideBtn
  52         self.showBtn = showBtn
  53         self.hideTxt = hideTxt
  54
  55         self.Bind(wx.EVT_BUTTON, self.OnHideButton, hideBtn)
  56         self.Bind(wx.EVT_BUTTON, self.OnShowButton, showBtn)
  57         self.Bind(wx.EVT_BUTTON, self.OnMoveButton, moveBtn1)
  58         self.Bind(wx.EVT_BUTTON, self.OnMoveButton, moveBtn2)
  59
  60         # Add a spacer at the end to ensure some extra space at the bottom
  61         gbs.Add((10,10), (14,0))
  62
  63         gbs.AddGrowableRow(3)
  64         gbs.AddGrowableCol(2)
  65
  66         p.SetSizerAndFit(gbs)
  67         self.SetClientSize(p.GetSize())
  68
  69
  70     def OnHideButton(self, evt):
  71         self.gbs.Hide(self.hideTxt)
  72         self.hideBtn.Disable()
  73         self.showBtn.Enable()
  74         self.gbs.Layout()
  75
  76
  77     def OnShowButton(self, evt):
  78         self.gbs.Show(self.hideTxt)
  79         self.hideBtn.Enable()
  80         self.showBtn.Disable()
  81         self.gbs.Layout()
  82
  83
  84     def OnMoveButton(self, evt):
  85         btn = evt.GetEventObject()
  86         curPos = self.gbs.GetItemPosition(btn)
  87
  88         # if it's already at the "other" spot then move it back
  89         if curPos == (3,6):
  90             self.gbs.SetItemPosition(btn, self.lastPos)
  91             btn.SetLabel("Move this to (3,6)")
  92         else:
  93             if self.gbs.CheckForIntersection( (3,6), (1,1) ):
  94                 wx.MessageBox("""\
  95 wxGridBagSizer will not allow items to be in the same cell as
  96 another item, so this operation will fail.  You will also get an assert
  97 when compiled in debug mode.""",
  98                               "Warning", wx.OK | wx.ICON_INFORMATION)
  99
 100             try:
 101                 if self.gbs.SetItemPosition(btn, (3,6)):
 102                     self.lastPos = curPos
 103                     btn.SetLabel("Move it back")
 104             except wx.PyAssertionError:
 105                 pass
 106
 107         self.gbs.Layout()
 108
 109
 110 #----------------------------------------------------------------------
 111
 112 def runTest(frame, nb, log):
 113     win = TestFrame()
 114     frame.otherWin = win
 115     win.Show(True)
 116
 117
 118 #----------------------------------------------------------------------
 119
 120
 121
 122 overview = """<html><body>
 123 <h2><center>wxGridBagSizer</center></h2>
 124
 125 The wxGridBagSizer is more or less a port of the the RowColSizer (that
 126 has been in the wxPython.lib package for quite some time) to C++.  It
 127 allows items to be placed at specific layout grid cells, and items can
 128 span across more than one row or column.
 129 </body></html>
 130 """
 131
 132
 133
 134 if __name__ == '__main__':
 135     import sys,os
 136     import run
 137     run.main(['', os.path.basename(sys.argv[0])])
 138