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#!/usr/bin/env python
"""
A blank screen stimulus.
This module contains a class implementing a blank screen stimulus.
"""
__author__ = 'Florian Krause <florian@expyriment.org>, \
Oliver Lindemann <oliver@expyriment.org>'
__version__ = '0.7.0'
__revision__ = '55a4e7e'
__date__ = 'Wed Mar 26 14:33:37 2014 +0100'
import expyriment
from _canvas import Canvas
class BlankScreen(Canvas):
"""A class implementing a blank screen."""
def __init__(self, colour=None):
"""Create a blank screen.
Parameters
----------
colour : (int,int,int), optional
colour of the blank screen
"""
if colour is not None:
self._colour = colour
else:
self._colour = expyriment._active_exp.background_colour
try:
size = expyriment._active_exp.screen.surface.get_size()
except:
raise RuntimeError("Could not get size of screen!")
Canvas.__init__(self, size, colour=self._colour)
if __name__ == "__main__":
from expyriment import control
control.set_develop_mode(True)
defaults.event_logging = 0
exp = control.initialize()
blankscreen = BlankScreen()
blankscreen.present()
exp.clock.wait(1000)
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