Add files via upload

1 files changed, 59 insertions, 0 deletions

diff --git a/smart_greyscale.sh b/smart_greyscale.sh
new file mode 100644
index 0000000..2aff820
--- /dev/null
+++ b/smart_greyscale.sh
@@ -0,0 +1,59 @@
+#!/bin/bash
+
+# Requires redshift and picom
+
+period=300
+location=""
+
+trap cleanup EXIT
+
+cleanup()
+{
+    killall picom 2> /dev/null
+}
+
+check_if_picom_already_running()
+{
+    if pgrep -x "picom" > /dev/null
+    then
+        echo "PICOM IS ALREADY RUNNING, PLEASE KILL IT AND EXECUTE THE SCRIPT AGAIN."
+        exit 1
+    fi
+}
+
+check_and_enable_if_night_or_day()
+{
+    if redshift -l $location -p | grep -i -q "day"; then
+        killall picom
+    else
+        if ! pgrep -x "picom" > /dev/null; then
+            picom -b --config /dev/null --backend glx --glx-fshader-win  "uniform sampler2D tex; uniform float opacity; void main() { vec4 c = texture2D(tex, gl_TexCoord[0].xy); float y = dot(c.rgb, vec3(0.2126, 0.7152, 0.0722)); gl_FragColor = opacity*vec4(y, y, y, c.a); }" &    
+        fi
+    fi
+}
+
+while getopts ':l:p:' flag; do
+    case "${flag}" in
+        l) location="${OPTARG}"                  ;;
+        p) period="${OPTARG}"                    ;;
+    esac
+done
+
+main()
+{
+    if [ "$location" == "" ]; then
+        echo "Need location argument [-l (LAT:LON)]"
+        exit 1
+    fi
+
+    check_if_picom_already_running
+
+    while true 
+    do
+        check_and_enable_if_night_or_day 
+
+        sleep $period
+    done
+}
+
+main