added pywal script for forest theme

simple/forest/scripts/pywal.sh

@@ -0,0 +1,88 @@
+#!/usr/bin/env bash
+
+# Color files
+PFILE="$HOME/.config/polybar/forest/colors.ini"
+RFILE="$HOME/.config/polybar/forest/scripts/rofi/colors.rasi"
+WFILE="$HOME/.cache/wal/colors.sh"
+
+# Get colors
+pywal_get() {
+	wal -i "$1" -q -t
+}
+
+# Change colors
+change_color() {
+	# polybar
+	sed -i -e "s/background = #.*/background = $BG/g" $PFILE
+	sed -i -e "s/foreground = #.*/foreground = $FG/g" $PFILE
+	sed -i -e "s/foreground-alt = #.*/foreground-alt = $FGA/g" $PFILE
+	sed -i -e "s/module-fg = #.*/module-fg = $MF/g" $PFILE
+	sed -i -e "s/primary = #.*/primary = $AC/g" $PFILE
+	sed -i -e "s/secondary = #.*/secondary = $SC/g" $PFILE
+	sed -i -e "s/alternate = #.*/alternate = $AL/g" $PFILE
+
+	# rofi
+	cat > $RFILE <<- EOF
+	/* colors */
+
+	* {
+	  al:   #00000000;
+	  bg:   ${BG}FF;
+	  bga:  ${AC}33;
+	  bar:  ${MF}FF;
+	  fg:   ${FG}FF;
+	  ac:   ${AC}FF;
+	}
+	EOF
+}
+
+hex_to_rgb() {
+    # Convert a hex value WITHOUT the hashtag (#)
+    R=$(printf "%d" 0x${1:0:2})
+    G=$(printf "%d" 0x${1:2:2})
+    B=$(printf "%d" 0x${1:4:2})
+}
+
+get_fg_color(){
+    INTENSITY=$(calc "$R*0.299 + $G*0.587 + $B*0.114")
+
+    if [ $(echo "$INTENSITY>186" | bc) -eq 1 ]; then
+        MF="#202020"
+    else
+        MF="#F5F5F5"
+    fi
+}
+
+# Main
+if [[ -x "`which wal`" ]]; then
+	if [[ "$1" ]]; then
+		pywal_get "$1"
+
+		# Source the pywal color file
+		if [[ -e "$WFILE" ]]; then
+			. "$WFILE"
+		else
+			echo 'Color file does not exist, exiting...'
+			exit 1
+		fi
+
+		BG=`printf "%s\n" "$background"`
+		FG=`printf "%s\n" "$foreground"`
+		FGA=`printf "%s\n" "$color8"`
+		AC=`printf "%s\n" "$color1"`
+		SC=`printf "%s\n" "$color2"`
+		AL=`printf "%s\n" "$color3"`
+
+		HEX=${AC:1}
+
+		hex_to_rgb $HEX
+		get_fg_color
+		change_color
+	else
+		echo -e "[!] Please enter the path to wallpaper. \n"
+		echo "Usage : ./pywal.sh path/to/image"
+	fi
+else
+	echo "[!] 'pywal' is not installed."
+fi
+