Initial Commit

widget/cpu/cpu-meter.lua

@@ -0,0 +1,50 @@
+local wibox = require('wibox')
+local mat_list_item = require('widget.material.list-item')
+local mat_slider = require('widget.material.slider')
+local mat_icon = require('widget.material.icon')
+local icons = require('theme.icons')
+local watch = require('awful.widget.watch')
+local dpi = require('beautiful').xresources.apply_dpi
+
+local total_prev = 0
+local idle_prev = 0
+
+local slider =
+  wibox.widget {
+  read_only = true,
+  widget = mat_slider
+}
+
+watch(
+  [[bash -c "cat /proc/stat | grep '^cpu '"]],
+  1,
+  function(_, stdout)
+    local user, nice, system, idle, iowait, irq, softirq, steal, guest, guest_nice =
+      stdout:match('(%d+)%s(%d+)%s(%d+)%s(%d+)%s(%d+)%s(%d+)%s(%d+)%s(%d+)%s(%d+)%s(%d+)%s')
+
+    local total = user + nice + system + idle + iowait + irq + softirq + steal
+
+    local diff_idle = idle - idle_prev
+    local diff_total = total - total_prev
+    local diff_usage = (1000 * (diff_total - diff_idle) / diff_total + 5) / 10
+
+    slider:set_value(diff_usage)
+
+    total_prev = total
+    idle_prev = idle
+    collectgarbage('collect')
+  end
+)
+
+local cpu_meter =
+  wibox.widget {
+  wibox.widget {
+    icon = icons.chart,
+    size = dpi(24),
+    widget = mat_icon
+  },
+  slider,
+  widget = mat_list_item
+}
+
+return cpu_meter