Add Battery widget plugin (#178)

* Init * fix: remove placeholder (weird bugs) * fix: README * fix: return if battery not found * fix: add "Not Charging" status * fix: insert in content table * feat: add error color when under 20% and discharging * feat: add warning color setting * fix(README): longer plugin description and settings descriptions * feat: add color and charging color * fix: default charging color
2026-07-31 23:15:04 -04:00
parent 7480982d83
commit 6db8390fd5
5 changed files with 315 additions and 0 deletions
@@ -0,0 +1,119 @@
+noctalia.setUpdateInterval(noctalia.getConfig("refresh_interval") * 1000)
+
+local glyph
+local color
+local percent
+local status
+
+local path = "/sys/class/power_supply/"
+local batName
+
+local function getBatName()
+    local config = noctalia.getConfig("battery")
+
+    if config == "bat0" then
+        return "BAT0"
+    elseif config == "custom" then
+        return noctalia.getConfig("battery_name")
+    end
+
+    local folders = noctalia.listDir(path)
+
+    if folders then
+        for _, name in ipairs(folders) do
+            if name:match("^BAT") then
+                return name
+            end
+        end
+    end
+    return nil
+end
+
+local function getGlyph()
+    if status == "Charging" then
+        glyph = "battery-charging"
+    elseif status == "Full" or status == "Not Charging" then
+        glyph = "battery-plugged"
+    elseif status == "Unknown" then
+        glyph = "battery-exclamation"
+    else
+        glyph = percent >= 85 and "battery-4"
+        or percent >= 55 and "battery-3"
+        or percent >= 30 and "battery-2"
+        or percent >= 10 and "battery-1"
+        or "battery-0"
+    end
+end
+
+local function getColor()
+    if status ~= "Charging" and percent <= 20 then
+        color = noctalia.getConfig("warning_color")
+        return
+    end
+    if status == "Charging" or status == "Full" or status == "Not Charging" then
+        color = noctalia.getConfig("charging_color")
+        return
+    end
+    color = noctalia.getConfig("color")
+end
+
+local function render()
+    if (noctalia.getConfig("hide_plugged") and (status == "Charging" or status == "Not Charging"))
+        or (noctalia.getConfig("hide_full") and status == "Full") then
+        desktopWidget.render(ui.row())
+        return
+    end
+
+    local content = {}
+    if noctalia.getConfig("show_glyph") then
+        table.insert(content, ui.glyph({ name = glyph, color = color }))
+    end
+    if noctalia.getConfig("show_label") then
+        table.insert(content, ui.label({ text = percent .. "%", color = color }))
+    end
+
+    local layout = noctalia.getConfig("layout") == "vertical" and ui.column or ui.row
+
+    desktopWidget.render(layout({ gap = 4, align = "center" }, content))
+end
+
+local function refreshBattery()
+    noctalia.runAsync(
+        "cat "
+        .. path .. batName .. "/capacity "
+        .. path .. batName .. "/status",
+        function(result)
+            if result.exitCode ~= 0 then
+                noctalia.log("battery-widget: failed to read battery: " .. result.stderr)
+                return
+            end
+
+            local lines = {}
+            for line in result.stdout:gmatch("[^\r\n]+") do
+                table.insert(lines, line)
+            end
+
+            if not lines[1] or not lines[2] then
+                noctalia.log("battery-widget: invalid battery output")
+                return
+            end
+
+            percent = tonumber(noctalia.string.trim(lines[1]))
+            status = noctalia.string.trim(lines[2])
+
+            getGlyph()
+            getColor()
+            render()
+        end
+    )
+end
+
+batName = getBatName()
+if not batName then
+    noctalia.log("battery-widget: battery not found")
+    return
+end
+
+function update()
+    refreshBattery()
+end