wxPython/demo/DynamicSashWindow.py

   1
   2 import  wx
   3 import  wx.gizmos   as  gizmos
   4 import  wx.stc      as  stc
   5
   6 #----------------------------------------------------------------------
   7 # This is an example of the complex view that manages its own scrollbars
   8 # as described in the overview below.
   9
  10 class TestView(stc.StyledTextCtrl):
  11     def __init__(self, parent, ID, log):
  12         stc.StyledTextCtrl.__init__(self, parent, ID, style=wx.NO_BORDER)
  13         self.dyn_sash = parent
  14         self.log = log
  15         self.SetupScrollBars()
  16         self.SetMarginWidth(1,0)
  17
  18         self.StyleSetFont(stc.STC_STYLE_DEFAULT,
  19                           wx.Font(10, wx.MODERN, wx.NORMAL, wx.NORMAL))
  20
  21         self.Bind(gizmos.EVT_DYNAMIC_SASH_SPLIT, self.OnSplit)
  22         self.Bind(gizmos.EVT_DYNAMIC_SASH_UNIFY, self.OnUnify)
  23         #self.SetScrollWidth(500)
  24
  25     def SetupScrollBars(self):
  26         # hook the scrollbars provided by the wxDynamicSashWindow
  27         # to this view
  28         v_bar = self.dyn_sash.GetVScrollBar(self)
  29         h_bar = self.dyn_sash.GetHScrollBar(self)
  30         v_bar.Bind(wx.EVT_SCROLL, self.OnSBScroll)
  31         h_bar.Bind(wx.EVT_SCROLL, self.OnSBScroll)
  32         v_bar.Bind(wx.EVT_SET_FOCUS, self.OnSBFocus)
  33         h_bar.Bind(wx.EVT_SET_FOCUS, self.OnSBFocus)
  34
  35         # And set the wxStyledText to use these scrollbars instead
  36         # of its built-in ones.
  37         self.SetVScrollBar(v_bar)
  38         self.SetHScrollBar(h_bar)
  39
  40
  41     def __del__(self):
  42         self.log.write("TestView.__del__\n")
  43
  44     def OnSplit(self, evt):
  45         self.log.write("TestView.OnSplit\n");
  46         newview = TestView(self.dyn_sash, -1, self.log)
  47         newview.SetDocPointer(self.GetDocPointer())     # use the same document
  48         self.SetupScrollBars()
  49
  50
  51     def OnUnify(self, evt):
  52         self.log.write("TestView.OnUnify\n");
  53         self.SetupScrollBars()
  54
  55
  56     def OnSBScroll(self, evt):
  57         # redirect the scroll events from the dyn_sash's scrollbars to the STC
  58         self.GetEventHandler().ProcessEvent(evt)
  59
  60     def OnSBFocus(self, evt):
  61         # when the scrollbar gets the focus move it back to the STC
  62         self.SetFocus()
  63
  64
  65 sampleText="""\
  66 You can drag the little tabs above the vertical scrollbar, or to the
  67 left of the horizontal scrollbar to split this view, and you can
  68 continue splitting the new views as much as you like.  Try it and see.
  69
  70 In this case the views also share the same document so changes in one
  71 are instantly seen in the others.  This is a feature of the
  72 StyledTextCtrl that is used for the view class in this sample.
  73 """
  74
  75 #----------------------------------------------------------------------
  76 # This one is simpler, but doesn't do anything with the scrollbars
  77 # except the default wxDynamicSashWindow behaviour
  78
  79 class SimpleView(wx.Panel):
  80     def __init__(self, parent, ID, log):
  81         wx.Panel.__init__(self, parent, ID)
  82         self.dyn_sash = parent
  83         self.log = log
  84         self.SetBackgroundColour("LIGHT BLUE")
  85         self.Bind(gizmos.EVT_DYNAMIC_SASH_SPLIT, self.OnSplit)
  86
  87     def OnSplit(self, evt):
  88         v = SimpleView(self.dyn_sash, -1, self.log)
  89
  90
  91 #----------------------------------------------------------------------
  92
  93 def runTest(frame, nb, log):
  94     if wx.Platform == "__WXMAC__":
  95         wx.MessageBox("This demo currently fails on the Mac. The problem is being looked into...", "Sorry")
  96         return
  97
  98     if 1:
  99         win = gizmos.DynamicSashWindow(nb, -1, style =  wx.CLIP_CHILDREN
 100                                   #| wxDS_MANAGE_SCROLLBARS
 101                                   #| wxDS_DRAG_CORNER
 102                                   )
 103
 104         win.SetFont(wx.Font(10, wx.MODERN, wx.NORMAL, wx.NORMAL))
 105         view = TestView(win, -1, log)
 106         view.SetText(sampleText)
 107     else:
 108         win = wx.DynamicSashWindow(nb, -1)
 109         view = SimpleView(win, -1, log)
 110     return win
 111
 112 #----------------------------------------------------------------------
 113
 114 overview = """\
 115 <html><body>
 116 <h2>DynamicSashWindow</h2>
 117 <p>
 118 wxDynamicSashWindow widgets manages the way other widgets are viewed.
 119 When a wxDynamicSashWindow is first shown, it will contain one child
 120 view, a viewport for that child, and a pair of scrollbars to allow the
 121 user to navigate the child view area.  Next to each scrollbar is a small
 122 tab.  By clicking on either tab and dragging to the appropriate spot, a
 123 user can split the view area into two smaller views separated by a
 124 draggable sash.  Later, when the user wishes to reunify the two subviews,
 125 the user simply drags the sash to the side of the window.
 126 wxDynamicSashWindow will automatically reparent the appropriate child
 127 view back up the window hierarchy, and the wxDynamicSashWindow will have
 128 only one child view once again.
 129 <p>
 130 As an application developer, you will simply create a wxDynamicSashWindow
 131 using either the Create() function or the more complex constructor
 132 provided below, and then create a view window whose parent is the
 133 wxDynamicSashWindow.  The child should respond to
 134 wxDynamicSashSplitEvents -- perhaps with an OnSplit() event handler -- by
 135 constructing a new view window whose parent is also the
 136 wxDynamicSashWindow.  That's it!  Now your users can dynamically split
 137 and reunify the view you provided.
 138 <p>
 139 If you wish to handle the scrollbar events for your view, rather than
 140 allowing wxDynamicSashWindow to do it for you, things are a bit more
 141 complex.  (You might want to handle scrollbar events yourself, if,
 142 for instance, you wish to scroll a subwindow of the view you add to
 143 your wxDynamicSashWindow object, rather than scrolling the whole view.)
 144 In this case, you will need to construct your wxDynamicSashWindow without
 145 the wxDS_MANAGE_SCROLLBARS style and  you will need to use the
 146 GetHScrollBar() and GetVScrollBar() methods to retrieve the scrollbar
 147 controls and call SetEventHanler() on them to redirect the scrolling
 148 events whenever your window is reparented by wxDyanmicSashWindow.
 149 You will need to set the scrollbars' event handler at three times:
 150 <p>
 151 <ul>
 152 <li>  When your view is created
 153 <li>  When your view receives a wxDynamicSashSplitEvent
 154 <li>  When your view receives a wxDynamicSashUnifyEvent
 155 </ul>
 156 </body></html>
 157 """
 158
 159
 160 if __name__ == '__main__':
 161     import sys,os
 162     import run
 163     run.main(['', os.path.basename(sys.argv[0])])
 164