wxPython/demo/ScrolledPanel.py

   1
   2 from wxPython.wx import *
   3
   4 #----------------------------------------------------------------------
   5
   6 text = "one two buckle my shoe three four shut the door five six pick up sticks seven eight lay them straight nine ten big fat hen"
   7
   8
   9 class ScrolledPanel(wxScrolledWindow):
  10     def __init__(self, parent, log):
  11         self.log = log
  12         wxScrolledWindow.__init__(self, parent, -1,
  13                                   style = wxTAB_TRAVERSAL|wxHSCROLL|wxVSCROLL)
  14
  15
  16         box = wxBoxSizer(wxVERTICAL)
  17         box.Add(wxStaticText(self, -1,
  18                              "This sample shows how to make a scrollable data entry \n"
  19                              "form by using a wxSizer in a wxScrolledWindow."),
  20                 0, wxCENTER|wxALL, 5)
  21         box.Add(wxStaticLine(self, -1), 0, wxEXPAND|wxALL, 5)
  22
  23         fgs = wxFlexGridSizer(cols=2, vgap=4, hgap=4)
  24         fgs.AddGrowableCol(1)
  25
  26         # Add some spacers
  27         fgs.Add(75, 10)
  28         fgs.Add(150, 10)
  29
  30         for word in text.split():
  31             label = wxStaticText(self, -1, word+":")
  32             tc = wxTextCtrl(self, -1, word)
  33             fgs.Add(label, flag=wxALIGN_RIGHT | wxALIGN_CENTER_VERTICAL)
  34             fgs.Add(tc, flag=wxEXPAND)
  35
  36         box.Add(fgs, 1)
  37         box.Add(10, 40)  # some more empty space at the bottom
  38         self.SetSizer(box)
  39
  40
  41         # The following is all that is needed to integrate the sizer and the
  42         # scrolled window.  In this case we will only support vertical scrolling.
  43         self.EnableScrolling(false, true)
  44         self.SetScrollRate(0, 20)
  45         box.SetVirtualSizeHints(self)
  46
  47         EVT_CHILD_FOCUS(self, self.OnChildFocus)
  48
  49
  50     def OnChildFocus(self, evt):
  51         # If the child window that gets the focus is not visible,
  52         # this handler will try to scroll enough to see it.  If you
  53         # need to handle horizontal auto-scrolling too then this will
  54         # need adapted.
  55         evt.Skip()
  56         child = evt.GetWindow()
  57
  58         sppu_y = self.GetScrollPixelsPerUnit()[1]
  59         vs_y   = self.GetViewStart()[1]
  60         cpos = child.GetPosition()
  61         csz  = child.GetSize()
  62
  63         # is it above the top?
  64         if cpos.y < 0:
  65             new_vs = cpos.y / sppu_y
  66             self.Scroll(-1, new_vs)
  67
  68         # is it below the bottom ?
  69         if cpos.y + csz.height > self.GetClientSize().height:
  70             diff = (cpos.y + csz.height - self.GetClientSize().height) / sppu_y
  71             self.Scroll(-1, vs_y + diff + 1)
  72
  73
  74 #----------------------------------------------------------------------
  75
  76 ## class ScrollToHandler(wxEvtHandler):
  77 ##     """This class helps to scroll the panel
  78
  79 #----------------------------------------------------------------------
  80
  81 def runTest(frame, nb, log):
  82     win = ScrolledPanel(nb, log)
  83     return win
  84
  85 #----------------------------------------------------------------------
  86
  87
  88
  89 overview = """<html><body>
  90 This sample shows how to make a scrollable data entry form by
  91 using a wxSizer in a wxScrolledWindow.
  92 </body></html>
  93 """
  94
  95
  96
  97 if __name__ == '__main__':
  98     import sys,os
  99     import run
 100     run.main(['', os.path.basename(sys.argv[0])])
 101