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         p.Bind(wx.EVT_LEFT_DOWN, self.OnLeftDown)
  17
  18         gbs = self.gbs = wx.GridBagSizer(5, 5)
  19
  20         gbs.Add( wx.StaticText(p, -1, gbsDescription),
  21                  (0,0), (1,7), wx.ALIGN_CENTER | wx.ALL, 5)
  22
  23
  24         gbs.Add( wx.TextCtrl(p, -1, "pos(1,0)"), (1,0) )
  25         gbs.Add( wx.TextCtrl(p, -1, "pos(1,1)"), (1,1) )
  26         gbs.Add( wx.TextCtrl(p, -1, "pos(2,0)"), (2,0) )
  27         gbs.Add( wx.TextCtrl(p, -1, "pos(2,1)"), (2,1) )
  28
  29         gbs.Add( wx.TextCtrl(p, -1, "pos(3,2), span(1,2)\nthis row and col are growable", style=wx.TE_MULTILINE),
  30                  (3,2), (1,2), flag=wx.EXPAND )
  31
  32         gbs.Add( wx.TextCtrl(p, -1, "pos(4,3), span(3,1)", style=wx.TE_MULTILINE),
  33                  (4,3), (3,1), wx.EXPAND)
  34
  35         gbs.Add( wx.TextCtrl(p, -1, "pos(5,4)"), (5,4), flag=wx.EXPAND )
  36         gbs.Add( wx.TextCtrl(p, -1, "pos(6,5)"), (6,5), flag=wx.EXPAND )
  37         gbs.Add( wx.TextCtrl(p, -1, "pos(7,6)"), (7,6) )
  38
  39         moveBtn1 = wx.Button(p, -1, "Move this to (3,6)")
  40         moveBtn2 = wx.Button(p, -1, "Move this to (3,6)");
  41         gbs.Add( moveBtn1, (10,2) )
  42         gbs.Add( moveBtn2, (10,3) )
  43
  44         hideBtn = wx.Button(p, -1, "Hide this item -->")
  45         gbs.Add(hideBtn, (12, 3))
  46
  47         hideTxt = wx.TextCtrl(p, -1, "pos(12,4), size(150, -1)", size = (150,-1))
  48         gbs.Add( hideTxt, (12,4) )
  49
  50         showBtn = wx.Button(p, -1, "<-- Show it again")
  51         gbs.Add(showBtn, (12, 5))
  52         showBtn.Disable()
  53         self.hideBtn = hideBtn
  54         self.showBtn = showBtn
  55         self.hideTxt = hideTxt
  56
  57         self.Bind(wx.EVT_BUTTON, self.OnHideButton, hideBtn)
  58         self.Bind(wx.EVT_BUTTON, self.OnShowButton, showBtn)
  59         self.Bind(wx.EVT_BUTTON, self.OnMoveButton, moveBtn1)
  60         self.Bind(wx.EVT_BUTTON, self.OnMoveButton, moveBtn2)
  61
  62         # Add a spacer at the end to ensure some extra space at the bottom
  63         gbs.Add((10,10), (14,7))
  64
  65         gbs.AddGrowableRow(3)
  66         gbs.AddGrowableCol(2)
  67
  68         p.SetSizerAndFit(gbs)
  69         self.SetClientSize(p.GetSize())
  70
  71
  72     def OnHideButton(self, evt):
  73         self.gbs.Hide(self.hideTxt)
  74         self.hideBtn.Disable()
  75         self.showBtn.Enable()
  76         self.gbs.Layout()
  77
  78
  79     def OnShowButton(self, evt):
  80         self.gbs.Show(self.hideTxt)
  81         self.hideBtn.Enable()
  82         self.showBtn.Disable()
  83         self.gbs.Layout()
  84
  85
  86     def OnMoveButton(self, evt):
  87         btn = evt.GetEventObject()
  88         curPos = self.gbs.GetItemPosition(btn)
  89
  90         # if it's already at the "other" spot then move it back
  91         if curPos == (3,6):
  92             self.gbs.SetItemPosition(btn, self.lastPos)
  93             btn.SetLabel("Move this to (3,6)")
  94         else:
  95             if self.gbs.CheckForIntersection( (3,6), (1,1) ):
  96                 wx.MessageBox("""\
  97 wxGridBagSizer will not allow items to be in the same cell as
  98 another item, so this operation will fail.  You will also get an assert
  99 when compiled in debug mode.""",
 100                               "Warning", wx.OK | wx.ICON_INFORMATION)
 101
 102             try:
 103                 if self.gbs.SetItemPosition(btn, (3,6)):
 104                     self.lastPos = curPos
 105                     btn.SetLabel("Move it back")
 106             except wx.PyAssertionError:
 107                 pass
 108
 109         self.gbs.Layout()
 110
 111
 112     def OnLeftDown(self, evt):
 113         pt = evt.GetPosition()
 114         item = self.gbs.FindItemAtPoint(pt)
 115         if item is None:
 116             print "no item at", `pt`
 117         else:
 118             print "item found: ", `item.GetPos()`, "--", `item.GetSpan()`
 119
 120
 121 #----------------------------------------------------------------------
 122
 123 def runTest(frame, nb, log):
 124     win = TestFrame()
 125     frame.otherWin = win
 126     win.Show(True)
 127
 128
 129 #----------------------------------------------------------------------
 130
 131
 132
 133 overview = """<html><body>
 134 <h2><center>wxGridBagSizer</center></h2>
 135
 136 The wxGridBagSizer is more or less a port of the the RowColSizer (that
 137 has been in the wxPython.lib package for quite some time) to C++.  It
 138 allows items to be placed at specific layout grid cells, and items can
 139 span across more than one row or column.
 140 </body></html>
 141 """
 142
 143
 144
 145 if __name__ == '__main__':
 146     import sys,os
 147     import run
 148     run.main(['', os.path.basename(sys.argv[0])])
 149