Text Display Demo : Pmw MegaWidget « GUI Pmw « Python

1. Python
2. GUI Pmw
3. Pmw MegaWidget

Text Display Demo

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title = 'Demonstration of how to create a megawidget'

# Import Pmw from this directory tree.
import sys
sys.path[:0] = ['../../..']

import Tkinter
import Pmw

class TextDisplay(Pmw.MegaWidget):

    # Demo Pmw megawidget.

    def __init__(self, parent = None, **kw):

  # Define the megawidget options.
  optiondefs = ()
  self.defineoptions(kw, optiondefs)

  # Initialise the base class (after defining the options).
  Pmw.MegaWidget.__init__(self, parent)

  # Create the components.
  interior = self.interior()

  self._text = self.createcomponent('text',
    (), None,
    Tkinter.Text, (interior,), state = 'disabled')
  self._text.pack(side='left', fill='both', expand='yes')

  self._scrollbar = self.createcomponent('scrollbar',
    (), None,
    Tkinter.Scrollbar, (interior,), command = self._text.yview)
  self._scrollbar.pack(side='right', fill='y')
  self._text.configure(yscrollcommand = self._scrollbar.set)

  # Check keywords and initialise options.
  self.initialiseoptions()

    def display(self, info):
  self._text.configure(state = 'normal')
  self._text.delete('1.0', 'end')
  self._text.insert('1.0', info)
  self._text.configure(state = 'disabled')

    def append(self, info):
  self._text.configure(state = 'normal')
  self._text.insert('end', info)
  self._text.configure(state = 'disabled')

class Demo:
    def __init__(self, parent):
  # Create and pack the megawidget.
  text = TextDisplay(parent,
    text_background = 'aliceblue',
    text_width = 40,
    text_height = 10,
    text_wrap = 'none',
  )
  text.pack(fill = 'both', expand = 1)
  text.display('This is an example of a simple Pmw megawidget.\n\n' +
    'Public attributes of the Tkinter module:\n\n')
  for name in dir(Tkinter):
      if name[0] != '_':
    text.append('    ' + name + '\n')

######################################################################

# Create demo in root window for testing.
if __name__ == '__main__':
    root = Tkinter.Tk()
    Pmw.initialise(root)
    root.title(title)

    exitButton = Tkinter.Button(root, text = 'Exit', command = root.destroy)
    exitButton.pack(side = 'bottom')
    widget = Demo(root)
    root.mainloop()


           
       

Related examples in the same category

1.	Demonstration of how to create a megawidget
2.	Public attributes of the Tkinter module
3.	Using Tk option database to configure Pmw megawidgets