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#!/usr/bin/env python
"""
demo.py - Demonstrates the simplest use of the plplot canvas widget with gtk.
Copyright (C) 2004, 2005 Thomas J. Duck
All rights reserved.
Thomas J. Duck <tom.duck@dal.ca>
Department of Physics and Atmospheric Science,
Dalhousie University, Halifax, Nova Scotia, Canada, B3H 3J5
$Author: tomduck $
$Revision: 1.8 $
$Date: 2005/05/16 17:06:49 $
$Name: cvs-tarball_2006-05-29-23-03-54 $
NOTICE
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
MA 02110-1301 USA
"""
import Numeric
import plplot_python_start
import plplotcanvas
import plplot
import gtk
import sys
# The width and height of the plplot canvas widget
WIDTH = 1000 # 500
HEIGHT = 600 # 300
# Delete event callback
def delete_event(widget, event, data=None):
return gtk.FALSE
# Destroy event calback
def destroy(widget, data=None):
gtk.main_quit()
# Parse the options
plplot.plparseopts(sys.argv,plplot.PL_PARSE_FULL);
# The data to plot
x = Numeric.arange(11)
y = x**2/10.
# Create the canvas and set its size; during the creation process,
# the gcw driver is loaded into plplot, and plinit() is invoked.
canvas=plplotcanvas.Canvas()
canvas.set_size(WIDTH,HEIGHT)
# Create a new window and stuff the canvas into it
window = gtk.Window(gtk.WINDOW_TOPLEVEL)
window.set_border_width(10)
window.add(canvas)
# Connect the signal handlers to the window decorations
window.connect("delete_event",delete_event)
window.connect("destroy",destroy)
# Display everything
window.show_all()
# Draw on the canvas with Plplot
canvas.adv(0) # Advance the page
canvas.col0(15) # Set color to black
canvas.wid(2) # Set the pen width
canvas.vsta() # Set the viewport
canvas.wind(0.,10.,0.,10.); # Set the window
canvas.box("bcnst",0.,0,"bcnstv",0.,0); # Set the box
canvas.lab("x-axis","y-axis","A Simple Plot") # Draw some labels
# Draw the line
canvas.col0(1) # Set the pen color
canvas.line(x,y)
# Advancing the page finalizes this plot
canvas.adv(0)
# Start the gtk main loop
gtk.main()
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