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, style = wx.TAB_TRAVERSAL
  16                      | wx.CLIP_CHILDREN
  17                      | wx.FULL_REPAINT_ON_RESIZE
  18                      )
  19         p.Bind(wx.EVT_LEFT_DOWN, self.OnLeftDown)
  20
  21         gbs = self.gbs = wx.GridBagSizer(5, 5)
  22
  23         gbs.Add( wx.StaticText(p, -1, gbsDescription),
  24                  (0,0), (1,7), wx.ALIGN_CENTER | wx.ALL, 5)
  25
  26         gbs.Add( wx.TextCtrl(p, -1, "pos(1,0)"), (1,0) )
  27         gbs.Add( wx.TextCtrl(p, -1, "pos(1,1)"), (1,1) )
  28         gbs.Add( wx.TextCtrl(p, -1, "pos(2,0)"), (2,0) )
  29         gbs.Add( wx.TextCtrl(p, -1, "pos(2,1)"), (2,1) )
  30
  31         gbs.Add( wx.TextCtrl(p, -1, "pos(3,2), span(1,2)\nthis row and col are growable", style=wx.TE_MULTILINE),
  32                  (3,2), (1,2), flag=wx.EXPAND )
  33
  34         gbs.Add( wx.TextCtrl(p, -1, "pos(4,3), span(3,1)", style=wx.TE_MULTILINE),
  35                  (4,3), (3,1), wx.EXPAND)
  36
  37         gbs.Add( wx.TextCtrl(p, -1, "pos(5,4)"), (5,4), flag=wx.EXPAND )
  38         gbs.Add( wx.TextCtrl(p, -1, "pos(6,5)"), (6,5), flag=wx.EXPAND )
  39         gbs.Add( wx.TextCtrl(p, -1, "pos(7,6)"), (7,6) )
  40
  41         moveBtn1 = wx.Button(p, -1, "Move this to (3,6)")
  42         moveBtn2 = wx.Button(p, -1, "Move this to (3,6)");
  43         gbs.Add( moveBtn1, (10,2) )
  44         gbs.Add( moveBtn2, (10,3) )
  45
  46         hideBtn = wx.Button(p, -1, "Hide this item -->")
  47         gbs.Add(hideBtn, (12, 3))
  48
  49         hideTxt = wx.TextCtrl(p, -1, "pos(12,4), size(150, -1)", size = (150,-1))
  50         gbs.Add( hideTxt, (12,4) )
  51
  52         showBtn = wx.Button(p, -1, "<-- Show it again")
  53         gbs.Add(showBtn, (12, 5))
  54         showBtn.Disable()
  55         self.hideBtn = hideBtn
  56         self.showBtn = showBtn
  57         self.hideTxt = hideTxt
  58
  59         self.Bind(wx.EVT_BUTTON, self.OnHideButton, hideBtn)
  60         self.Bind(wx.EVT_BUTTON, self.OnShowButton, showBtn)
  61         self.Bind(wx.EVT_BUTTON, self.OnMoveButton, moveBtn1)
  62         self.Bind(wx.EVT_BUTTON, self.OnMoveButton, moveBtn2)
  63
  64         # Add a spacer at the end to ensure some extra space at the bottom
  65         gbs.Add((10,10), (14,7))
  66
  67         gbs.AddGrowableRow(3)
  68         gbs.AddGrowableCol(2)
  69
  70         p.SetSizerAndFit(gbs)
  71         self.SetClientSize(p.GetSize())
  72
  73
  74     def OnHideButton(self, evt):
  75         self.gbs.Hide(self.hideTxt)
  76         self.hideBtn.Disable()
  77         self.showBtn.Enable()
  78         self.gbs.Layout()
  79
  80
  81     def OnShowButton(self, evt):
  82         self.gbs.Show(self.hideTxt)
  83         self.hideBtn.Enable()
  84         self.showBtn.Disable()
  85         self.gbs.Layout()
  86
  87
  88     def OnMoveButton(self, evt):
  89         btn = evt.GetEventObject()
  90         curPos = self.gbs.GetItemPosition(btn)
  91
  92         # if it's already at the "other" spot then move it back
  93         if curPos == (3,6):
  94             self.gbs.SetItemPosition(btn, self.lastPos)
  95             btn.SetLabel("Move this to (3,6)")
  96         else:
  97             if self.gbs.CheckForIntersectionPos( (3,6), (1,1) ):
  98                 wx.MessageBox("""\
  99 wx.GridBagSizer will not allow items to be in the same cell as
 100 another item, so this operation will fail.  You will also get an
 101 assert when compiled in debug mode.""",
 102                               "Warning", wx.OK | wx.ICON_INFORMATION)
 103
 104             try:
 105                 if self.gbs.SetItemPosition(btn, (3,6)):
 106                     self.lastPos = curPos
 107                     btn.SetLabel("Move it back")
 108             except wx.PyAssertionError:
 109                 pass
 110
 111         self.gbs.Layout()
 112
 113
 114     def OnLeftDown(self, evt):
 115         pt = evt.GetPosition()
 116         item = self.gbs.FindItemAtPoint(pt)
 117         if item is None:
 118             print "no item at", `pt`
 119         else:
 120             print "item found: ", `item.GetPos()`, "--", `item.GetSpan()`
 121
 122
 123 #---------------------------------------------------------------------------
 124
 125 class TestPanel(wx.Panel):
 126     def __init__(self, parent, log):
 127         self.log = log
 128         wx.Panel.__init__(self, parent, -1)
 129
 130         b = wx.Button(self, -1, "Show the GridBagSizer sample", (50,50))
 131         self.Bind(wx.EVT_BUTTON, self.OnButton, b)
 132
 133
 134     def OnButton(self, evt):
 135         win = TestFrame()
 136         win.Show(True)
 137
 138
 139
 140 #---------------------------------------------------------------------------
 141
 142
 143 def runTest(frame, nb, log):
 144     win = TestPanel(nb, log)
 145     return win
 146
 147
 148 #----------------------------------------------------------------------
 149
 150
 151
 152 overview = """<html><body>
 153 <h2><center>wx.GridBagSizer</center></h2>
 154
 155 The wx.GridBagSizer is more or less a port of the the RowColSizer (that
 156 has been in the wxPython.lib package for quite some time) to C++.  It
 157 allows items to be placed at specific layout grid cells, and items can
 158 span across more than one row or column.
 159 </body></html>
 160 """
 161
 162
 163
 164 if __name__ == '__main__':
 165     import sys,os
 166     import run
 167     run.main(['', os.path.basename(sys.argv[0])] + sys.argv[1:])
 168