def configure_event(widget, event, data):
'''The "configure_event" signal handler. Any processing required when
the OpenGL-capable drawing area is re-configured should be done here.
Almost always it will be used to resize the OpenGL viewport when
the window is resized.'''
allocation = widget.get_allocation()
w = allocation.width
h = allocation.height
# OpenGL BEGIN
if not GtkGLExt.widget_begin_gl(widget):
return False
GL.glViewport(0, 0, w, h)
GL.glMatrixMode(GL.GL_PROJECTION)
GL.glLoadIdentity()
GL.glOrtho(-50., 50., -50., 50., -1., 1.)
GL.glMatrixMode(GL.GL_MODELVIEW)
GL.glLoadIdentity()
GtkGLExt.widget_end_gl(widget, False)
# OpenGL END
return True
def realize(widget, data):
'''The "realize" signal handler. All the OpenGL initialization
should be performed here, such as default background colour,
certain states etc.'''
# OpenGL BEGIN
if not GtkGLExt.widget_begin_gl(widget):
return
GL.glClearColor(0., 0., 0., 0.)
GL.glShadeModel(GL.GL_FLAT)
GtkGLExt.widget_end_gl(widget, False)
def draw (widget, cr, data):
'''The "draw" signal handler. All the OpenGL re-drawing should
be done here. This is repeatedly called as the painting routine
every time the 'draw' event is signalled.'''
# OpenGL BEGIN
if not GtkGLExt.widget_begin_gl(widget):
return False
GL.glClear(GL.GL_COLOR_BUFFER_BIT)
GL.glPushMatrix()
GL.glRotatef(spin, 0., 0., 1.)
GL.glColor3f(1., 1., 1.)
GL.glRectf(-25., -25., 25., 25.)
GL.glPopMatrix()
GtkGLExt.widget_end_gl(widget, True)
# OpenGL END
return True
def __enter__(self):
#self.context = GtkGLExt.widget_create_gl_context(self.widget)
assert GtkGLExt.widget_begin_gl(self.widget)
def __enter__(self):
#self.context = GtkGLExt.widget_create_gl_context(self.widget)
assert GtkGLExt.widget_begin_gl(self.widget)
