wxPython/demo/GridBagSizer.py

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