Mega Code Archive
Demonstration of how to create a megawidget
<![CDATA[
#Pmw copyright
#Copyright 1997-1999 Telstra Corporation Limited, Australia
#Copyright 2000-2002 Really Good Software Pty Ltd, Australia
#Permission is hereby granted, free of charge, to any person obtaining a copy
#of this software and associated documentation files (the "Software"), to deal
#in the Software without restriction, including without limitation the rights
#to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
#copies of the Software, and to permit persons to whom the Software is furnished
#to do so, subject to the following conditions:
#The above copyright notice and this permission notice shall be included in all
#copies or substantial portions of the Software.
#THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
#INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
#PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
#HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
#OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
#SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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()
]]>