From 8d3f3d19b98a6779333c249405879c74e916c483 Mon Sep 17 00:00:00 2001
From: Skladnayazebra <skladnayazebra@gmail.com>
Date: Fri, 7 Nov 2025 11:22:34 +0100
Subject: Improve battery indicator, add low level highlights

---
 tmux/battery.sh | 38 +++++++++++++++++++++++++-------------
 tmux/tmux.conf  |  2 +-
 2 files changed, 26 insertions(+), 14 deletions(-)

(limited to 'tmux')

diff --git a/tmux/battery.sh b/tmux/battery.sh
index 26b3388..2cd1afb 100755
--- a/tmux/battery.sh
+++ b/tmux/battery.sh
@@ -1,17 +1,29 @@
 round() { awk -v n=$1 -v d=$2 'BEGIN{print int((n+d/2)/d) * d}'; }
 
 upower -i /org/freedesktop/UPower/devices/DisplayDevice | awk '/percentage:/ {print $2}' | {
-	read s;
-	lvl=$(round "${s%%%}" 10);
-	if [ $lvl -eq "10" ]; then printf "󰁺"; fi
-	if [ $lvl -eq "20" ]; then printf "󰁻"; fi
-	if [ $lvl -eq "30" ]; then printf "󰁼"; fi
-	if [ $lvl -eq "40" ]; then printf "󰁽"; fi
-	if [ $lvl -eq "50" ]; then printf "󰁾"; fi
-	if [ $lvl -eq "60" ]; then printf "󰁿"; fi
-	if [ $lvl -eq "70" ]; then printf "󰂀"; fi
-	if [ $lvl -eq "80" ]; then printf "󰂁"; fi
-	if [ $lvl -eq "90" ]; then printf "󰂂"; fi
-	if [ $lvl -eq "100" ]; then printf "󰁹"; fi
-	printf " %.0f%%" "${s%%%}";
+	read percentage_raw; # e.g. 69.420%
+	percentage_10s=$(round "${percentage_raw%%%}" 10); # rounded number: 70
+	# when battery is low, highlight it
+	if [ $percentage_10s -le "10" ]; then 
+		printf "#[bg=red,fg=brightwhite]";
+	elif [ $percentage_10s -le "20" ]; then
+		printf "#[bg=brightyellow]";
+	fi
+	printf " ";
+	# icon
+	if [ $percentage_10s -le "10" ]; then printf "󰁺"; fi
+	if [ $percentage_10s -eq "20" ]; then printf "󰁻"; fi
+	if [ $percentage_10s -eq "30" ]; then printf "󰁼"; fi
+	if [ $percentage_10s -eq "40" ]; then printf "󰁽"; fi
+	if [ $percentage_10s -eq "50" ]; then printf "󰁾"; fi
+	if [ $percentage_10s -eq "60" ]; then printf "󰁿"; fi
+	if [ $percentage_10s -eq "70" ]; then printf "󰂀"; fi
+	if [ $percentage_10s -eq "80" ]; then printf "󰂁"; fi
+	if [ $percentage_10s -eq "90" ]; then printf "󰂂"; fi
+	if [ $percentage_10s -eq "100" ]; then printf "󰁹"; fi
+	printf " ";
+	# percentage level rounded to a whole number (69%)
+	printf "%.0f%%" "${percentage_raw%%%}";
+	printf " ";
+	printf "#[default]"; # reset style
 }
diff --git a/tmux/tmux.conf b/tmux/tmux.conf
index 0b9d45f..8ffbe81 100644
--- a/tmux/tmux.conf
+++ b/tmux/tmux.conf
@@ -26,4 +26,4 @@ set-window-option -g window-status-current-format ' #I:#W '
 bind '"' split-window -v -c "#{pane_current_path}"
 bind % split-window -h -c "#{pane_current_path}"
 
-set-window-option -g status-right "%H:%M %d-%b-%y #($HOME/.config/tmux/battery.sh) "
+set-window-option -g status-right '%H:%M  %d-%b-%y #($HOME/.config/tmux/battery.sh)'
-- 
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