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# -*- python -*-
# This example demonstrates how the currents settings
# can be read and transitioned from.
# This file is dual-licensed under GNU General Public License
# version 3 and GNU Free Documentation License version 1.3.
# 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 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 General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
# Copyright © 2014 Mattias Andrée (maandree@member.fsf.org)
#
# Permission is granted to copy, distribute and/or modify this document
# under the terms of the GNU Free Documentation License, Version 1.3
# or any later version published by the Free Software Foundation;
# with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts.
# You should have received a copy of the GNU General Public License
# along with this software package. If not, see <http://www.gnu.org/licenses/>.
uses_adhoc_opts = True
'''
:bool `True` if the configuration script parses the ad-hoc settings
'''
# Get --temperature from Blueshift ad-hoc settigns
temperature_to = int(parser.opts['--temperature'][0])
# Get current colour curves
(drm_get if ttymode else randr_get)(0)()
r_, g_, b_ = r_curve[:], g_curve[:], b_curve[:]
start_over()
# Calculate divergence
temperature(temperature_to, lambda t : divide_by_maximum(cmf_10deg(t)))
f = lambda xy : abs(xy[0] - xy[1])
divergence = max([max(map(f, zip(x, y))) for x, y in curves(r_, g_, b_)])
# Get the end state colour curves
r, g, b = r_curve[:], g_curve[:], b_curve[:]
# Calculate transition time
fadein_time = divergence * 5
fadein_steps = fadein_time * 10
# Function for setting the colour temperature
def adjust(alpha):
f = lambda on : on[0] * (1 - alpha) + on[1] * alpha
ccc = curves((r_, r), (g_, g), (b_, b))
ccc = [(out, list(map(f, zip(old, new)))) for out, (old, new) in ccc]
for out, curve in ccc:
out[:] = curve
(drm if ttymode else randr)(0)
# Perform transition
if divergence and not panicgate:
signal.signal(signal.SIGTERM, signal_SIGTERM)
dtime = fadein_time / fadein_steps
df = 1 / fadein_steps
trans = 0
while running:
try:
trans += df
if trans > 1:
break
adjust(trans)
time.sleep(dtime)
except KeyboardInterrupt:
running = False
adjust(1)
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