extensions from laptop

.local/share/noctalia/plugins/system-status/cpu.luau

@@ -11,6 +11,26 @@ local command = [[awk '
 local previous = {}
 local request_in_flight = false
 
+local function colorForUsage(percent)
+  if percent >= 85 then
+    return "#ff453a" -- red
+  end
+  if percent >= 70 then
+    return "#ff8800" -- orange
+  end
+  if percent >= 50 then
+    return "#ffd60a" -- yellow
+  end
+  return "#ffffff" -- white
+end
+
+local function renderStatus(text, color)
+  barWidget.render(ui.row({ gap = 4, align = "center" }, {
+    ui.glyph({ name = "cpu", size = 14, color = color }),
+    ui.label({ text = text, color = color }),
+  }))
+end
+
 function update()
   noctalia.setUpdateInterval(2000)
 
@@ -23,7 +43,8 @@ function update()
     request_in_flight = false
 
     if result.exitCode ~= 0 then
-      barWidget.setText("CPU —")
+      renderStatus("CPU —", "#fff1e6")
+      barWidget.setTooltip("Unable to read CPU utilization")
       return
     end
 
@@ -47,12 +68,19 @@ function update()
       previous[name] = { total = total, idle = idle }
     end
 
-    barWidget.setGlyph("cpu")
     if sampled > 0 then
-      barWidget.setText(string.format("%.0f%%", utilization))
-      barWidget.setTooltip("Aggregate CPU utilization (100% per logical CPU)")
+      -- Keep the aggregate display, but base its heat color on average
+      -- utilization per logical CPU so multicore systems do not stay red.
+      local per_cpu_utilization = utilization / sampled
+      renderStatus(string.format("%.0f%%", utilization), colorForUsage(per_cpu_utilization))
+      barWidget.setTooltip(
+        string.format(
+          "Aggregate CPU utilization (100%% per logical CPU) · %.0f%% average per CPU",
+          per_cpu_utilization
+        )
+      )
     else
-      barWidget.setText("—")
+      renderStatus("—", "#fff1e6")
       barWidget.setTooltip("Sampling CPU utilization…")
     end
   end)

.local/share/noctalia/plugins/system-status/memory.luau

@@ -8,16 +8,37 @@ $1 == "SwapFree:" { swap_free = $2 }
 END {
   if (!total || !available) exit 1
   used = total - available
+  memory_used = used * 100 / total
   if (swap_total > 0) {
     swap_used = (swap_total - swap_free) * 100 / swap_total
-    printf "RAM %.1f/%.1f GiB  S %.0f%%\n", used / 1048576, total / 1048576, swap_used
+    printf "%.1f/%.1f GiB  S %.0f%%\t%.0f\t%.0f\n", used / 1048576, total / 1048576, swap_used, memory_used, swap_used
   } else {
-    printf "RAM %.1f/%.1f GiB  S —\n", used / 1048576, total / 1048576
+    printf "%.1f/%.1f GiB  S —\t%.0f\t0\n", used / 1048576, total / 1048576, memory_used
   }
 }' /proc/meminfo]]
 
 local request_in_flight = false
 
+local function colorForUsage(percent)
+  if percent >= 85 then
+    return "#ff453a" -- red
+  end
+  if percent >= 70 then
+    return "#ff8800" -- orange
+  end
+  if percent >= 50 then
+    return "#ffd60a" -- yellow
+  end
+  return "#ffffff" -- white
+end
+
+local function renderStatus(text, color)
+  barWidget.render(ui.row({ gap = 4, align = "center" }, {
+    ui.glyph({ name = "memory", size = 14, color = color }),
+    ui.label({ text = text, color = color }),
+  }))
+end
+
 function update()
   noctalia.setUpdateInterval(5000)
 
@@ -30,14 +51,32 @@ function update()
     request_in_flight = false
 
     if result.exitCode ~= 0 then
-      barWidget.setText("RAM —")
+      renderStatus("RAM —", "#fff1e6")
       barWidget.setTooltip("Unable to read /proc/meminfo")
       return
     end
 
-    local text = string.gsub(result.stdout, "%s+$", "")
-    barWidget.setGlyph("memory")
-    barWidget.setText(text)
-    barWidget.setTooltip("RAM used / total · S = swap used")
+    local text, memory_percent, swap_percent = string.match(
+      result.stdout,
+      "^([^\t]+)\t([%d.]+)\t([%d.]+)"
+    )
+    memory_percent = tonumber(memory_percent)
+    swap_percent = tonumber(swap_percent)
+
+    if text == nil or memory_percent == nil or swap_percent == nil then
+      renderStatus("RAM —", "#fff1e6")
+      barWidget.setTooltip("Unable to parse memory utilization")
+      return
+    end
+
+    local highest_usage = math.max(memory_percent, swap_percent)
+    renderStatus(text, colorForUsage(highest_usage))
+    barWidget.setTooltip(
+      string.format(
+        "RAM used / total · %.0f%% RAM · %.0f%% swap",
+        memory_percent,
+        swap_percent
+      )
+    )
   end)
 end

.local/share/noctalia/plugins/system-status/plugin.toml

@@ -3,7 +3,7 @@ name = "System Status"
 version = "1.0.0"
 plugin_api = 3
 author = "alex"
-description = "Low-overhead memory and swap indicator for the bar."
+description = "Low-overhead system and network status indicators for the bar."
 
 [[widget]]
 id = "cpu"
@@ -17,6 +17,10 @@ entry = "memory.luau"
 id = "battery-rate"
 entry = "battery-rate.luau"
 
+[[widget]]
+id = "network-rate"
+entry = "network-rate.luau"
+
 [[widget]]
 id = "gpu-mode"
 entry = "gpu-mode.luau"