/usr/lib/python2.7/dist-packages/openexp/canvas.py is in opensesame 0.27.4-2.1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 | #-*- coding:utf-8 -*-
"""
This file is part of openexp.
openexp 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 3 of the License, or
(at your option) any later version.
openexp 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 openexp. If not, see <http://www.gnu.org/licenses/>.
"""
from libopensesame import debug
import tempfile
import pygame
import os
temp_files = [] # Contains a list of temporary files that should be cleaned up
class canvas:
"""A 'magic' class that morphs into the approriate backend from openexp._canvas"""
def __init__(self, experiment, bgcolor=None, fgcolor=None, auto_prepare=True):
backend = experiment.canvas_backend
debug.msg('morphing into %s' % backend)
mod = __import__('openexp._canvas.%s' % backend, fromlist=['dummy'])
cls = getattr(mod, backend)
self.__class__ = cls
cls.__init__(self, experiment, bgcolor, fgcolor, auto_prepare)
def init_display(experiment):
"""Call the back-end specific init_display function"""
backend = experiment.canvas_backend
debug.msg('morphing into %s' % backend)
mod = __import__('openexp._canvas.%s' % backend, fromlist=['dummy'])
mod.init_display(experiment)
def close_display(experiment):
"""Call the back-end specific close_display function"""
backend = experiment.canvas_backend
debug.msg('morphing into %s' % backend)
mod = __import__('openexp._canvas.%s' % backend, fromlist=['dummy'])
mod.close_display(experiment)
def clean_up(verbose = False):
"""
Cleans up the temporary pool folders
Keyword arguments:
verbose -- a boolean indicating if debugging output should be provided
(default = False)
"""
global temp_files
if verbose:
print "canvas.clean_up()"
for path in temp_files:
if verbose:
print "canvas.clean_up(): removing '%s'" % path
try:
os.remove(path)
except Exception as e:
if verbose:
print "canvas.clean_up(): failed to remove '%s': %s" % (path, e)
def gabor_file(orient, freq, env = "gaussian", size = 96, stdev = 12, phase = 0, col1 = "white", col2 = "black", bgmode = "avg"):
"""
Creates a temporary file containing a Gabor patch.
Keyword arguments:
See canvas.noise_patch()
Returns:
A path to the image file
"""
global temp_files
import openexp._canvas.legacy
surface = openexp._canvas.legacy._gabor(orient, freq, env, size, stdev, phase, col1, col2, bgmode)
tmp = tempfile.mkstemp(suffix = ".png") [1]
pygame.image.save(surface, tmp)
temp_files.append(tmp)
return tmp
def noise_file(env = "gaussian", size = 96, stdev = 12, col1 = "white", col2 = "black", bgmode = "avg"):
"""
Creates a temporary file containing a noise patch.
Keyword arguments:
See canvas.noise_patch()
Returns:
A path to the image file
"""
global temp_files
import openexp._canvas.legacy
surface = openexp._canvas.legacy._noise_patch(env, size, stdev, col1, col2, bgmode)
tmp = tempfile.mkstemp(suffix = ".png") [1]
pygame.image.save(surface, tmp)
temp_files.append(tmp)
return tmp
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