#!/usr/bin/env python3
# Copyright © 2014 Mattias Andrée (maandree@member.fsf.org)
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published by
# the Free Software Foundation, either version 3 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 Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
import sys
from curve import *
# /usr/lib
LIBDIR = 'bin'
sys.path.append(LIBDIR)
randr_opened = None
def translate_to_integers():
'''
Translate the curves from float to integer
@param :(list<int>, list<int>, list<int>) The red curve, the green curve and,
the blue curve mapped to integers
'''
R_curve, G_curve, B_curve = [0] * i_size, [0] * i_size, [0] * i_size
for i_curve, o_curve in ((r_curve, R_curve), (g_curve, G_curve), (b_curve, B_curve)):
for i in range(i_size):
o_curve[i] = int(i_curve[i] * (o_size - 1) + 0.5)
if clip_result:
o_curve[i] = min(max(0, o_curve[i]), (o_size - 1))
return (R_curve, G_curve, B_curve)
def close_c_bindings():
'''
Close all C bindings and let them free resources and close connections
'''
global randr_opened
if randr_opened is not None:
from blueshift_randr import randr_close
randr_opened = None
randr_close()
def randr(*crtcs, screen = 0):
'''
Applies colour curves using the X11 extension randr
@param *crtcs The CRT controllers to use, all are used if none are specified
@param screen The screen that the monitors belong to
'''
from blueshift_randr import randr_open, randr_apply, randr_close
global randr_opened
crtcs = sum([1 << i for i in list(crtcs)])
if crtcs == 0:
crtcs = (1 << 64) - 1
(R_curve, G_curve, B_curve) = translate_to_integers()
if (randr_opened is None) or not (randr_opened == screen):
if randr_opened is not None:
randr_close()
if randr_open(screen) == 0:
randr_opened = screen
else:
sys.exit(1)
try:
if not randr_apply(crtcs, R_curve, G_curve, B_curve) == 0:
sys.exit(1)
except OverflowError:
pass # Happens on exit by TERM signal
def print_curves(*crtcs, screen = 0):
'''
Prints the curves to stdout
@param *crtcs Dummy parameter
@param screen Dummy parameter
'''
(R_curve, G_curve, B_curve) = translate_to_integers()
print(R_curve)
print(G_curve)
print(B_curve)
