Commit e4d3b1585cd6accd15c77e0ec167ad55c9913405
Parent: 52e9e3c95e26c68c06d2e4f2e9d82d3d3629b6fe
Author: mcol <mcol@posteo.net>
Date: 2020-01-10 18:40:57 +0000
Committer: mcol <mcol@posteo.net>
Committed: 2020-01-10 18:40:57 +0000

add backlight Notifier-based plugin

backlight/backlight.py Added

@@ -0,0 +1,60 @@
+"""
+Qtile plugin to control the screen backlight.
+
+Example usage:
+
+    import qtools.backlight
+    backlight = qtools.backlight.Backlight()
+    keys.extend([EzKey(k, v) for k, v in {
+        '<XF86MonBrightnessUp>':    backlight.lazy_inc_brightness,
+        '<XF86MonBrightnessDown>':  backlight.lazy_dec_brightness,
+    }.items()])
+
+"""
+
+import os
+
+from libqtile.log_utils import logger
+from qtools import Notifier
+
+
+class Backlight(Notifier):
+
+    defaults = [
+        ('summary', 'Backlight', 'Notification summary.'),
+        ('interval', 10, 'Percentage interval by which to change backlight'),
+        (
+            'path',
+            '/sys/class/backlight/nv_backlight/brightness',
+            'Full path to backlight device.'
+        ),
+    ]
+
+    def __init__(self, **config):
+        Notifier.__init__(self, **config)
+        self.add_defaults(Backlight.defaults)
+
+        if os.path.isfile(self.path):
+            self.brightness = self.read()
+        else:
+            logger.error('Path passed to Backlight plugin is invalid')
+            self.path = '/dev/null'
+            self.brightness = 0
+
+    def read(self):
+        with open(self.path, 'r') as f:
+            return int(f.read())
+
+    def write(self, string):
+        with open(self.path, 'w') as f:
+            f.write(string)
+        self.update(string)
+        self.show()
+
+    def inc_brightness(self, qtile=None):
+        self.brightness = min(self.brightness + self.interval, 100)
+        self.write(str(self.brightness))
+
+    def dec_brightness(self, qtile=None):
+        self.brightness = max(self.brightness - self.interval, 0)
+        self.write(str(self.brightness))

backlight/__init__.py Added

@@ -0,0 +1 @@
+from .backlight import Backlight