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#!/usr/bin/env python
# This program is a mapping of the share-lists.c program
# written by Naofumi. It should provide a good test case for the
# relevant gtk.gtkgl.*/gtk.gdkgl.* classes and functions in PyGtkGLExt.
#
# Alif Wahid, May 2003.
import sys
import pygtk
pygtk.require('2.0')
import gtk
import gtk.gtkgl
from OpenGL.GL import *
from OpenGL.GLU import *
# Due to the low level nature of this
# program, I think aggregating Gtk
# classes is a better idea rather
# than inheriting. This class is really
# intended to provide a namespace rather
# than an object heirarchy.
class ShareListsDemo(object):
def __init__(self):
self.display_mode = gtk.gdkgl.MODE_RGB | \
gtk.gdkgl.MODE_DEPTH | \
gtk.gdkgl.MODE_DOUBLE
# Try to create a double buffered framebuffer,
# if not successful then create a single
# buffered one.
try:
self.glconfig = gtk.gdkgl.Config(mode=self.display_mode)
except gtk.gdkgl.NoMatches:
self.display_mode &= ~gtk.gdkgl.MODE_DOUBLE
self.glconfig = gtk.gdkgl.Config(mode=self.display_mode)
# Create the window for the app.
self.win = gtk.Window()
self.win.set_title('share-lists')
if sys.platform != 'win32':
self.win.set_resize_mode(gtk.RESIZE_IMMEDIATE)
self.win.set_reallocate_redraws(True)
self.win.set_border_width(10)
self.win.connect('destroy', lambda quit: gtk.main_quit())
# VBox to hold everything.
vbox = gtk.VBox()
self.win.add(vbox)
vbox.show()
# DrawingArea-1 for OpenGL rendering (main: creates display list).
glarea = gtk.gtkgl.DrawingArea( glconfig=self.glconfig,
share_list=None,
render_type=gtk.gdkgl.RGBA_TYPE)
glarea.set_size_request(120, 120)
red = (1.0, 0.0, 0.0, 0.0)
glarea.connect_after('realize', self.__realize_main, red)
glarea.connect('configure_event', self.__configure_event)
glarea.connect('expose_event', self.__expose_event)
vbox.pack_start(glarea, expand=True, fill=True, padding=5)
glarea.show()
# Get OpenGL context.
glarea.realize()
self.glcontext = glarea.get_gl_context()
# DrawingArea-2 for OpenGL rendering (sub: shares display list).
glarea = gtk.gtkgl.DrawingArea( glconfig=self.glconfig,
share_list=self.glcontext,
render_type=gtk.gdkgl.RGBA_TYPE)
glarea.set_size_request(120, 120)
green = (0.0, 1.0, 0.0, 0.0)
glarea.connect_after('realize', self.__realize, green)
glarea.connect('configure_event', self.__configure_event)
glarea.connect('expose_event', self.__expose_event)
vbox.pack_start(glarea, expand=True, fill=True, padding=5)
glarea.show()
# DrawingArea-3 for OpenGL rendering (sub: shares display list).
glarea = gtk.gtkgl.DrawingArea( glconfig=self.glconfig,
share_list=self.glcontext,
render_type=gtk.gdkgl.RGBA_TYPE)
glarea.set_size_request(120, 120)
blue = (0.0, 0.0, 1.0, 0.0)
glarea.connect_after('realize', self.__realize, blue)
glarea.connect('configure_event', self.__configure_event)
glarea.connect('expose_event', self.__expose_event)
vbox.pack_start(glarea, expand=True, fill=True, padding=5)
glarea.show()
# A quit button.
button = gtk.Button('Quit')
button.connect('clicked', lambda quit: self.win.destroy())
vbox.pack_start(button, expand=False, fill=False, padding=5)
button.show()
def __init_gl (self, light_diffuse):
# OpenGL context initialisation.
# Only call this while having a valid context!
light_position = (1.0, 1.0, 1.0, 0.0)
glLightfv(GL_LIGHT0, GL_DIFFUSE, light_diffuse)
glLightfv(GL_LIGHT0, GL_POSITION, light_position)
glEnable(GL_LIGHTING)
glEnable(GL_LIGHT0)
glEnable(GL_DEPTH_TEST)
glClearColor(1.0, 1.0, 1.0, 1.0)
glClearDepth(1.0)
glMatrixMode(GL_PROJECTION)
glLoadIdentity()
gluPerspective(40.0, 1.0, 1.0, 10.0)
glMatrixMode(GL_MODELVIEW)
glLoadIdentity()
gluLookAt(0.0, 0.0, 3.0,
0.0, 0.0, 0.0,
0.0, 1.0, 0.0)
glTranslatef(0.0, 0.0, -3.0)
def __realize_main(self, widget, light_diffuse):
# Get GLContext and GLDrawable
glcontext = widget.get_gl_context()
gldrawable = widget.get_gl_drawable()
# OpenGL begin.
if not gldrawable.gl_begin(glcontext): return
# Create display list #1.
qobj = gluNewQuadric()
gluQuadricDrawStyle(qobj, GLU_FILL)
glNewList(1, GL_COMPILE)
gluSphere(qobj, 1.0, 20, 20)
glEndList()
# Initialise rendering context.
self.__init_gl(light_diffuse)
# OpenGL end
gldrawable.gl_end()
def __realize(self, widget, light_diffuse):
# Get GLContext and GLDrawable
glcontext = widget.get_gl_context()
gldrawable = widget.get_gl_drawable()
# GL calls
if not gldrawable.gl_begin(glcontext): return
# Initialise rendering context.
self.__init_gl(light_diffuse)
# OpenGL end
gldrawable.gl_end()
def __configure_event(self, widget, event):
# Get GLContext and GLDrawable
glcontext = widget.get_gl_context()
gldrawable = widget.get_gl_drawable()
# GL calls
if not gldrawable.gl_begin(glcontext): return
# OpenGL begin.
glViewport(0, 0, widget.allocation.width, widget.allocation.height)
# OpenGL end
gldrawable.gl_end()
return True
def __expose_event(self, widget, event):
# Get GLContext and GLDrawable
glcontext = widget.get_gl_context()
gldrawable = widget.get_gl_drawable()
# GL calls
if not gldrawable.gl_begin(glcontext): return
# OpenGL begin.
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT)
glCallList(1)
if gldrawable.is_double_buffered():
gldrawable.swap_buffers()
else:
glFlush()
# OpenGL end
gldrawable.gl_end()
return True
def run(self):
self.win.show()
gtk.main()
if __name__ == '__main__':
app = ShareListsDemo()
app.run()
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