Pmw/Pmw_1_2/demos/PanedWidget.py

   1 title = 'Pmw.PanedWidget demonstration'
   2
   3 # Import Pmw from this directory tree.
   4 import sys
   5 sys.path[:0] = ['../../..']
   6
   7 import Tkinter
   8 import Pmw
   9
  10 class Demo:
  11     def __init__(self, parent):
  12
  13         # Create a main PanedWidget with a few panes.
  14         self.pw = Pmw.PanedWidget(parent,
  15                 orient='vertical',
  16                 hull_borderwidth = 1,
  17                 hull_relief = 'sunken',
  18                 hull_width=300,
  19                 hull_height=400)
  20         for self.numPanes in range(4):
  21             if self.numPanes == 1:
  22                 name = 'Fixed size'
  23                 pane = self.pw.add(name, min = .1, max = .1)
  24             else:
  25                 name = 'Pane ' + str(self.numPanes)
  26                 pane = self.pw.add(name, min = .1, size = .25)
  27             label = Tkinter.Label(pane, text = name)
  28             label.pack(side = 'left', expand = 1)
  29             button = Tkinter.Button(pane, text = 'Delete',
  30                     command = lambda s=self, n=name: s.deletePane(n))
  31             button.pack(side = 'left', expand = 1)
  32             # TODO: add buttons to invoke self.moveOneUp and self.moveOneUp.
  33
  34         self.pw.pack(expand = 1, fill='both')
  35
  36         buttonBox = Pmw.ButtonBox(parent)
  37         buttonBox.pack(fill = 'x')
  38         buttonBox.add('Add pane', command = self.addPane)
  39         buttonBox.add('Move pane', command = self.move)
  40         self.moveSrc = 0
  41         self.moveNewPos = 1
  42         self.moveBack = 0
  43
  44     def move(self):
  45         numPanes = len(self.pw.panes())
  46         if numPanes == 0:
  47             print 'No panes to move!'
  48             return
  49
  50         if self.moveSrc >= numPanes:
  51             self.moveSrc = numPanes - 1
  52         if self.moveNewPos >= numPanes:
  53             self.moveNewPos = numPanes - 1
  54         print 'Moving pane', self.moveSrc, 'to new position', self.moveNewPos
  55         self.pw.move(self.moveSrc, self.moveNewPos)
  56
  57         self.moveSrc, self.moveNewPos = self.moveNewPos, self.moveSrc
  58         if self.moveBack:
  59             if self.moveNewPos == numPanes - 1:
  60                 self.moveNewPos = 0
  61                 if self.moveSrc == numPanes - 1:
  62                     self.moveSrc = 0
  63                 else:
  64                     self.moveSrc = self.moveSrc + 1
  65             else:
  66                 self.moveNewPos = self.moveNewPos + 1
  67         self.moveBack = not self.moveBack
  68
  69     def addPane(self):
  70         self.numPanes = self.numPanes + 1
  71         name = 'Pane ' + str(self.numPanes)
  72         print 'Adding', name
  73         pane = self.pw.add(name, min = .1, size = .25)
  74         label = Tkinter.Label(pane, text = name)
  75         label.pack(side = 'left', expand = 1)
  76         button = Tkinter.Button(pane, text = 'Delete',
  77                 command = lambda s=self, n=name: s.deletePane(n))
  78         button.pack(side = 'left', expand = 1)
  79         self.pw.updatelayout()
  80
  81     def deletePane(self, name):
  82         print 'Deleting', name
  83         self.pw.delete(name)
  84         self.pw.updatelayout()
  85
  86     def moveOneUp(self, name):
  87         self.pw.move(name, name, -1)
  88
  89     def moveOneDown(self, name):
  90         self.pw.move(name, name, 1)
  91
  92 ######################################################################
  93
  94 # Create demo in root window for testing.
  95 if __name__ == '__main__':
  96     root = Tkinter.Tk()
  97     Pmw.initialise(root)
  98     root.title(title)
  99
 100     exitButton = Tkinter.Button(root, text = 'Exit', command = root.destroy)
 101     exitButton.pack(side = 'bottom')
 102     widget = Demo(root)
 103     root.mainloop()