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
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
|
#!/usr/bin/python3
# Licensed under the GNU GPLv3+
import math
import os
import subprocess
import gi
gi.require_version('Gtk', '3.0')
from gi.repository import Gtk
def xrandr(args):
cmd = ['xrandr'] + args
return subprocess.check_output(cmd).decode('utf-8')
def get_connected_outputs():
for line in xrandr([]).splitlines():
if line.startswith(' '):
continue
words = line.split()
if words[1] == 'connected':
yield words[0]
def set_brightness_and_gamma(outputs, brightness, gamma):
args = []
for output in outputs:
args += ['--output', output,
'--brightness', str(brightness),
'--gamma', '{}:{}:{}'.format(gamma[0], gamma[1], gamma[2])]
print(' '.join(args))
xrandr(args)
def color_temperature_to_rgb(kelvin):
"""Adapted from tannerhelland.com/4435."""
temp = kelvin / 100.0
if temp <= 66:
red = 255
green = temp
green = 99.4708025861 * math.log(green) - 161.1195681661
if temp <= 19:
blue = 0
else:
blue = temp-10
blue = 138.5177312231 * math.log(blue) - 305.0447927307
else:
red = temp - 60
red = 329.698727446 * math.pow(red, -0.1332047592)
green = temp - 60
green = 288.1221695283 * math.pow(green, -0.0755148492)
blue = 255
def clamp(val):
if val < 0:
return 0
elif val > 255:
return 255
else:
return val
return [clamp(red), clamp(green), clamp(blue)]
def temperature_to_gamma(kelvin):
rgb = color_temperature_to_rgb(kelvin)
fac = sum(rgb) / 3
for i in range(3):
rgb[i] /= (fac)
return rgb
class MyWindow(Gtk.Window):
def __init__(self, conf):
Gtk.Window.__init__(self, title="xrandr-slightly-fewer-tears")
self.set_default_size(640, -1)
self.conf = conf
self.box = Gtk.Box(orientation=Gtk.Orientation.VERTICAL, border_width=10)
self.add(self.box)
self.brightness_checkbutton = self.add_checkbutton(
'Brightness', conf.brightness_enabled)
self.brightness = self.add_hscale(20, 100, conf.brightness)
self.temperature_checkbutton = self.add_checkbutton(
'Temperature (K)', conf.temperature_enabled)
self.temperature = self.add_hscale(2000, 10000, conf.temperature)
# Update immediately so that saved values are loaded on startup
self.update()
def add_checkbutton(self, label, default):
btn = Gtk.CheckButton(label)
btn.set_active(default)
btn.connect('toggled', lambda _: self.update())
self.box.add(btn)
return btn
def add_hscale(self, min_val, max_val, def_val):
scale = Gtk.Scale(orientation=Gtk.Orientation.HORIZONTAL, digits=0)
scale.set_range(min_val, max_val)
scale.set_value(def_val)
scale.connect('value-changed', lambda _: self.update())
self.box.add(scale)
return scale
def save_conf(self):
self.conf.brightness_enabled = self.brightness_checkbutton.get_active()
self.conf.temperature_enabled = self.temperature_checkbutton.get_active()
self.conf.brightness = self.brightness.get_value()
self.conf.temperature = self.temperature.get_value()
self.conf.save()
def update(self):
if self.brightness_checkbutton.get_active():
brightness = self.brightness.get_value() / 100.0
if brightness < 0.2:
brightness = 0.2
else:
brightness = 1.0
if self.temperature_checkbutton.get_active():
gamma = temperature_to_gamma(self.temperature.get_value())
else:
gamma = (1, 1, 1)
set_brightness_and_gamma(get_connected_outputs(), brightness, gamma)
self.save_conf()
class Config(object):
def __init__(self):
self.pardir = os.path.join(os.getenv('HOME'),
'.config',
'xrandr-slightly-fewer-tears')
self.path = os.path.join(self.pardir, 'xsft.conf')
# key:default
self.items = {
'brightness': 80.0,
'brightness_enabled': True,
'temperature': 5500.0,
'temperature_enabled': True
}
# Set defaults
for key in self.items:
setattr(self, key, self.items[key])
try:
self.load()
except IOError:
pass
def load(self):
with open(self.path) as conf_file:
for line in conf_file.readlines():
parts = line.split('=')
key = parts[0]
val_str = parts[1]
default = self.items.get(key)
if default is not None:
if isinstance(default, bool):
val = bool(val_str)
else:
val = float(val_str)
setattr(self, key, val)
def save(self):
if not os.path.isdir(self.pardir):
os.mkdir(self.pardir)
with open(self.path, 'w') as conf_file:
for key in self.items:
val = getattr(self, key)
conf_file.write('{}={}\n'.format(key, val))
def main():
conf = Config()
win = MyWindow(conf)
win.connect("delete-event", Gtk.main_quit)
win.show_all()
Gtk.main()
if __name__ == '__main__':
main()
|
