violet4 · January 4, 2022 02:54 · Jan 4, 2022
diff --git a/brightness.py b/brightness.py
@@ -0,0 +1,53 @@
+#!/usr/bin/env python3
+import curses
+import subprocess
+import re
+
+
+# use something that won't hurt the eyes if it's evening
+brightness_re = re.compile(r'Color temperature: (\d+)K')
+start_brightness = 3000
+
+print_str = '''
+increment by: 50<- {increment} ->50
+current brightness: V {brightness} ^
+
+to exit, press any key other than the arrow keys
+'''
+
+
+def print_screen(screen, brightness, increment):
+    screen.addstr(0, 0, print_str.format(brightness=brightness, increment=increment))
+    screen.refresh()
+
+
+def main(screen):
+    brightness = start_brightness
+    increment = 200
+
+    while True:
+        print_screen(screen, brightness, increment)
+        ch = screen.getch()
+
+        if ch == curses.KEY_DOWN:
+            brightness -= increment
+        elif ch == curses.KEY_UP:
+            brightness += increment
+        elif ch == curses.KEY_LEFT:
+            increment -= 50
+        elif ch == curses.KEY_RIGHT:
+            increment += 50
+        else:
+            return brightness
+
+        if brightness < 1000:
+            brightness = 1000
+        elif brightness > 25000:
+            brightness = 25000
+
+        subprocess.check_output(['redshift', '-PO', str(brightness)])
+
+
+if __name__ == '__main__':
+    brightness = curses.wrapper(main)
+    print('set brightness to', brightness)
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