A simple sticky note application using pygtk!

stickynote.py

import pygtk
pygtk.require('2.0')
import gtk
import os

class TextBox:
	def __init__(self):
		self.window = gtk.Window(gtk.WINDOW_TOPLEVEL)
		self.window.set_size_request(200,250)
		self.window.connect("destroy", self.close_application)
		self.window.set_title("sticky note")
		self.window.set_border_width(4)
		self.box1 = gtk.EventBox()
		self.box1.connect('leave_notify_event',self.save_text)
		self.window.add(self.box1)
		self.box1.show()
		
		self.textview = gtk.TextView()
		self.textbuffer = self.textview.get_buffer()
		self.textview.set_editable(True)
		self.box1.add(self.textview)
		self.textview.show()
		if os.path.isfile(os.path.join(os.getcwd(),'stickynote.txt')):
		  infile = open('stickynote.txt','r')
	  	if infile:
	  	  string = infile.read()
	  	  infile.close()
	  	  self.textbuffer.set_text(string)
		  
		self.window.show()
        
	def close_application(self, widget):
		file = open('stickynote.txt','w')
		startiter = self.textbuffer.get_start_iter()
		enditer = self.textbuffer.get_end_iter()
		text = self.textbuffer.get_text(startiter, enditer)
		file.write(text)
		file.close()
		gtk.main_quit()
	
	def save_text(self, widget, data=None):
	  file = open('stickynote.txt','w')
	  startiter = self.textbuffer.get_start_iter()
	  enditer = self.textbuffer.get_end_iter()
	  text = self.textbuffer.get_text(startiter, enditer)
	  file.write(text)
	  file.close()
	  return	
def main():
	gtk.main()
	
if __name__ == '__main__':
	TextBox()
	main()

save this in your home directory. And add following command to your .profile file
python stickynotes.py &
Don't forget to add "&"!
And whenever you log in, It would be there.

New feature added. Every time mouse pointer goes out of the window(box), text will get saved. This is because, if machine is shut down or logged out, the process is killed and text does not get stored.

I ported this to PyGObject with python three. In addition, I fixed the alternating tabs and spaces, added a shebang, and fixed a bug where using ^C wouldn't end the process on linux.

#!/usr/bin/env python3

import gi
gi.require_version('Gtk', '3.0')
from gi.repository import Gtk
import os

class TextBox:
    def __init__(self):
        self.window = Gtk.Window(Gtk.WindowType.TOPLEVEL)
        self.window.set_size_request(200,250)
        self.window.connect("destroy", self.close_application)
        self.window.set_title("sticky note")
        self.window.set_border_width(4)
        self.box1 = Gtk.EventBox()
        self.box1.connect('leave_notify_event',self.save_text)
        self.window.add(self.box1)
        self.box1.show()
        self.textview = Gtk.TextView()
        self.textbuffer = self.textview.get_buffer()
        self.textview.set_editable(True)
        self.box1.add(self.textview)
        self.textview.show()
        if os.path.isfile(os.path.join(os.getcwd(),'stickynote.txt')):
            infile = open('stickynote.txt','r')
            if infile:
                string = infile.read()
                infile.close()
            self.textbuffer.set_text(string)
        self.window.show()

    def close_application(self, widget):
        file = open('stickynote.txt','w')
        startiter = self.textbuffer.get_start_iter()
        enditer = self.textbuffer.get_end_iter()
        _ = 'This is a throwaway variable.'
        text = self.textbuffer.get_text(startiter, enditer, _)
        file.write(text)
        file.close()
        Gtk.main_quit()

    def save_text(self, widget, data=None):
        file = open('stickynote.txt','w')
        startiter = self.textbuffer.get_start_iter()
        enditer = self.textbuffer.get_end_iter()
        _ = 'This is a throwaway variable.'
        text = self.textbuffer.get_text(startiter, enditer, _)
        file.write(text)
        file.close()
        return
def main():
    Gtk.main()

if __name__ == '__main__':
    import signal
    signal.signal(signal.SIGINT, signal.SIG_DFL)
    TextBox()
    main()