Add brightness control scripts

sway/.config/sway/config

@@ -45,8 +45,8 @@ bindsym XF86AudioPause exec playerctl play-pause
 bindsym XF86AudioNext exec playerctl next
 bindsym XF86AudioPrev exec playerctl previous
 
-bindsym XF86MonBrightnessUp exec brightnessctl set +5%
-bindsym XF86MonBrightnessDown exec brightnessctl set 5%-
+bindsym XF86MonBrightnessUp exec /bin/sh -c ~/.config/sway/scripts/increase_brightness
+bindsym XF86MonBrightnessDown exec /bin/sh -c ~/.config/sway/scripts/decrease_brightness
 
 
 bindsym $mod+c exec kitty -e python

sway/.config/sway/scripts/decrease_brightness

@@ -0,0 +1,18 @@
+#!/bin/sh
+
+export BRIGHTNESS=`brightnessctl g`
+if [ $BRIGHTNESS -gt 0 ]; then
+    brightnessctl set 5%-
+else
+    killall gammastep &> /dev/null
+
+    export BRIGHTNESS=`cat /tmp/brightness 2> /dev/null || echo 1` 
+    if [ `echo "$BRIGHTNESS > 0.1" | bc -l` == 1 ]; then
+        export BRIGHTNESS=`echo "$BRIGHTNESS - 0.1" | bc`
+        echo $BRIGHTNESS > /tmp/brightness
+        gammastep -O 6500 -b $BRIGHTNESS:0.1 &
+    else
+        gammastep -O 6500 -b 0.1:0.1 &
+    fi
+fi
+

sway/.config/sway/scripts/increase_brightness

@@ -0,0 +1,18 @@
+#!/bin/sh
+
+export BRIGHTNESS=`brightnessctl g`
+if [ $BRIGHTNESS == 0 ]; then
+    killall gammastep &> /dev/null
+
+    export BRIGHTNESS=`cat /tmp/brightness 2> /dev/null || echo 1` 
+    if [ `echo "$BRIGHTNESS < 1.0" | bc -l` == 1 ]; then
+        export BRIGHTNESS=`echo "$BRIGHTNESS + 0.1" | bc`
+        echo $BRIGHTNESS > /tmp/brightness
+        gammastep -O 6500 -b $BRIGHTNESS:0.1 &
+    else
+        brightnessctl set 5%
+    fi
+else
+    brightnessctl set +5%
+fi
+