#!/usr/bin/env python3 copyright = ''' 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 os import sys import time import signal import datetime from argparser import * PROGRAM_NAME = 'blueshift' PROGRAM_VERSION = '1.1' ## Set global variables global DATADIR, i_size, o_size, r_curve, g_curve, b_curve, clip_result, reset, panicgate global periodically, wait_period, fadein_time, fadeout_time, fadein_steps, fadeout_steps global monitor_controller, running, continuous_run, panic, _globals_ global signal_SIGTERM from solar import * from curve import * from colour import * from monitor import * config_file = None periodically = None ''' :(int, int, int, int, int, int, int, float?)?→void Place holder for periodically invoked function Invoked periodically If you want to control at what to invoke this function next time you can set the value of the global variable `wait_period` to the number of seconds to wait before invoking this function again. The value does not need to be an integer. @param year:int The year @param month:int The month, 1 = January, 12 = December @param day:int The day, minimum value is 1, probable maximum value is 31 (*) @param hour:int The hour, minimum value is 0, maximum value is 23 @param minute:int The minute, minimum value is 0, maximum value is 59 @param second:int The second, minimum value is 0, probable maximum value is 60 (**) @param weekday:int The weekday, 1 = Monday, 7 = Sunday @param fade:float? Blueshift can use this function to fade into a state when it start or exits. `fade` can either be negative, zero or positive or `None`, but the magnitude of value cannot exceed 1. When Blueshift starts, this function will be invoked multiple with the time parameters of the time it is invoked and each time `fade` will increase towards 1, starting at 0, when the value is 1, the settings should be applied to 100 %. After this this function will be invoked once again with `fade` being `None`. When Blueshift exits the same behaviour is used except, `fade` decrease towards -1 but start slightly below 0, when -1 is reached all settings should be normal. Then Blueshift will NOT invoke this function with `fade` being `None`, instead it will by itself revert all settings and quit. (*) Can be exceeded if the calendar system is changed, like in 1712-(02)Feb-30 (**) See https://en.wikipedia.org/wiki/Leap_second ''' wait_period = 60 ''' :float The number of seconds to wait before invoking `periodically` again ''' monitor_controller = lambda : randr() ''' :()→void Function used by Blueshift on exit to apply reset colour curves, if using preimplemented `reset` ''' fadein_time = 2 ''' :float? The number of seconds used to fade in on start, `None` for no fading ''' fadeout_time = 2 ''' :float? The number of seconds used to fade out on exit, `None` for no fading ''' fadein_steps = 40 ''' :int The number of steps in the fade in phase, if any ''' fadeout_steps = 40 ''' :int The number of steps in the fade out phase, if any ''' panicgate = False ''' :bool `True` if translition into initial state should be skipped ''' running = True ''' :bool `True` while to program has not received a terminate signal ''' panic = False ''' :bool `True` if the program has received two terminate signals ''' conf_opts = None ''' :list<str> This list will never be `None` and it will always have at least one element. This list is filled with options passed to the configurations, with the first element being the configuration file ''' def reset(): ''' Invoked to reset the displays ''' start_over() monitor_controller() def signal_SIGTERM(signum, frame): ''' Signal handler for SIGTERM @param signum The signal number, 0 if called from the program itself @param frame Ignore, it will probably be `None` ''' global running, panic if not running: panic = True running = False _globals_, _locals_ = globals(), dict(locals()) for key in _locals_: _globals_[key] = _locals_[key] def signal_SIGUSR1(signum, frame): ''' Signal handler for SIGUSR1 @param signum The signal number, 0 if called from the program itself @param frame Ignore, it will probably be `None` ''' code = None with open(config_file, 'rb') as script: code = script.read() code = code.decode('utf8', 'error') + '\n' code = compile(code, config_file, 'exec') exec(code, _globals_) def continuous_run(): ''' Invoked to run continuously if `periodically` is not `None` ''' global running, wait_period, fadein_time, fadeout_time, fadein_steps, fadeout_steps def p(t, fade = None): try: wd = t.isocalendar()[2] periodically(t.year, t.month, t.day, t.hour, t.minute, t.second, wd, fade) except KeyboardInterrupt: signal_SIGTERM(0, None) def sleep(seconds): try: time.sleep(seconds) except KeyboardInterrupt: signal_SIGTERM(0, None) ## Catch signals signal.signal(signal.SIGTERM, signal_SIGTERM) signal.signal(signal.SIGUSR1, signal_SIGUSR1) ## Fade in early_exit = False ftime = 0 if fadein_steps <= 0: fadein_time = None if (fadein_time is not None) and not panicgate: dtime = fadein_time / fadein_steps df = 1 / fadein_steps while running: ftime += df if ftime > 1: break p(datetime.datetime.now(), ftime) sleep(dtime) if ftime <= 1: early_exit = True ## Run periodically if not early_exit: while running: p(datetime.datetime.now(), None) if running: sleep(wait_period) ## Fade out if fadeout_steps <= 0: fadeout_time = None if fadeout_time is not None: dtime = fadeout_time / fadeout_steps df = 1 / fadeout_steps if not early_exit: ftime = 1 while not panic: ftime -= df if ftime <= 0: break p(datetime.datetime.now(), -ftime) sleep(dtime) ## Reset reset() ## Read command line arguments parser = ArgParser('Colour temputare controller', sys.argv[0] + ' [options] [-- configuration-options]', 'Blueshift adjusts the colour temperature of your\n' 'monitor according to brightness outside to reduce\n' 'eye strain and make it easier to fall asleep when\n' 'going to bed. IT can also be used to increase the\n' 'colour temperature and make the monitor bluer,\n' 'this helps you focus on your work.', None, True, ArgParser.standard_abbreviations()) dn = '\nUse twice or daytime and nighttime respectively' parser.add_argumented(['-c', '--configurations'], 0, 'FILE', 'Select configuration file') parser.add_argumentless(['-p', '--panic-gate', '--panicgate'], 0, 'Skip transition into initial settings') parser.add_argumented(['-g', '--gamma'], 0, 'RGB|R:G:B', 'Set gamma correction' + dn) parser.add_argumented(['-b', '--brightness'], 0, 'RGB|R:G:B', 'Set brightness using sRGB' + dn) parser.add_argumented(['+b', '++brightness'], 0, 'Y', 'Set brightness using CIE xyY' + dn) parser.add_argumented(['-t', '--temperature'], 0, 'TEMP', 'Set colour temperature' + dn) parser.add_argumented(['-l', '--location'], 0, 'LAT:LON', 'Select your GPS location\n' 'Measured in degrees, negative for south or west') parser.add_argumentless(['-r', '--reset'], 0, 'Reset to default settings') parser.add_argumented(['-o', '--output', '--crtc'], 0, 'CRTCS', 'Select CRTC to apply changes to\nComma separated or multiple options\n' 'It is best to start one instance per monitor with colour calibration') parser.add_argumentless(['-h', '-?', '--help'], 0, 'Print this help information') parser.add_argumentless(['-C', '--copying', '--copyright'], 0, 'Print copyright information') parser.add_argumentless(['-W', '--warranty'], 0, 'Print non-warranty information') parser.add_argumentless(['-v', '--version'], 0, 'Print program name and version') parser.parse() parser.support_alternatives() if parser.opts['--help'] is not None: parser.help() sys.exit(0) elif parser.opts['--copyright'] is not None: print(copyright[1 : -1]) sys.exit(0) elif parser.opts['--warranty'] is not None: print('This program is distributed in the hope that it will be useful,') print('but WITHOUT ANY WARRANTY; without even the implied warranty of') print('MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the') print('GNU Affero General Public License for more details.') sys.exit(0) elif parser.opts['--version'] is not None: print('%s %s' % (PROGRAM_NAME, PROGRAM_VERSION)) sys.exit(0) a = lambda opt : opt[0] if opt is not None else None config_file = a(parser.opts['--configurations']) panicgate = parser.opts['--panicgate'] is not None doreset = parser.opts['--reset'] is not None location = a(parser.opts['--location']) gammas = parser.opts['--gamma'] rgb_brightnesses = parser.opts['--brightness'] cie_brightnesses = parser.opts['++brightness'] temperatures = parser.opts['--temperature'] output = parser.opts['--output'] if output is None: output = [] settings = [gammas, rgb_brightnesses, cie_brightnesses, temperatures] if (config_file is None) and any([doreset, location] + settings): ## Use one time configurations d = lambda a, default : [default, default] if a is None else (a * 2 if len(a) == 1 else a) continuous = any(map(lambda a : (a is not None) and (len(a) == 2), settings)) continuous = continuous or (location is not None) gammas = d(gammas, "1:1:1") rgb_brightnesses = d(rgb_brightnesses, "1") cie_brightnesses = d(cie_brightnesses, "1") if temperatures is None: temperatures = ['3700', '6500'] elif len(temperatures) == 1: temperatures *= 2 settings = [gammas, rgb_brightnesses, cie_brightnesses, temperatures, [location]] s = lambda f, v : f(v) if v is not None else None settings = [s(lambda c : [s(lambda x : [float(y) for y in x.split(':')], x) for x in c], c) for c in settings] [gammas, rgb_brightnesses, cie_brightnesses, temperatures, location] = settings location = None if location is None else location[0] alpha = lambda : 1 if continuous: if location is not None: alpha = lambda : sun(*location) else: def alpha_(): now = datetime.datetime.now() hh, mm = now.hour, now.minute + now.second / 60 if 12 <= hh <= 22: return 1 - (hh - 12) / (22 - 12) - mm / 60 if hh <= 12: hh += 22 - 12 return (hh - 22) / 14 + m / 60 alpha = alpha_ def reduce(f, items): if len(items) < 2: return items rc = items[0] for i in range(1, len(items)): rc = f(rc, items[i]) return rc output = reduce(lambda x, y : x + y, [a.split(',') for a in output]) monitor_controller = lambda : randr(*output) def apply(dayness, pureness): start_over() interpol_ = lambda d, p, a, r : d * r + (p[0] * a + p[1] * (1 - a)) * (1 - r) interpol = lambda d, p : [interpol_(d, [p[0][i], p[1][i]], dayness, pureness) for i in range(len(p[0]))] temperature(*interpol(6500, temperatures), algorithm = lambda t : divide_by_maximum(cmf_10deg(t))) rgb_brightness(*interpol(1, rgb_brightnesses)) cie_brightness(*interpol(1, cie_brightnesses)) clip() gamma(*interpol(1, gammas)) clip() monitor_controller() if continuous and not doreset: def periodically(year, month, day, hour, minute, second, weekday, fade): apply(alpha(), 0 if fade is None else 1 - abs(fade)) else: if not panicgate: signal.signal(signal.SIGTERM, signal_SIGTERM) trans = 0 while running: apply(alpha(), trans if doreset else 1 - trans) trans += 0.05 time.sleep(0.1) if trans >= 1: break apply(alpha(), 1 if doreset else 0) else: ## Load extension and configurations via blueshiftrc if config_file is None: for file in ('$XDG_CONFIG_HOME/%/%rc', '$HOME/.config/%/%rc', '$HOME/.%rc', '/etc/%rc'): file = file.replace('%', 'blueshift') for arg in ('XDG_CONFIG_HOME', 'HOME'): if '$' + arg in file: if arg in os.environ: file = file.replace('$' + arg, os.environ[arg].replace('$', '\0')) else: file = None break if file is not None: file = file.replace('\0', '$') if os.path.exists(file): config_file = file break conf_opts = [config_file] + parser.files if config_file is not None: code = None with open(config_file, 'rb') as script: code = script.read() code = code.decode('utf8', 'error') + '\n' code = compile(code, config_file, 'exec') g, l = globals(), dict(locals()) for key in l: g[key] = l[key] exec(code, g) else: print('No configuration file found') sys.exit(1) ## Run periodically if configured to if periodically is not None: continuous_run() close_c_bindings()