The two widgets next to the system tray:
Awesome WM widgets
Battery monitor
This one is pretty simple, based on this wiki page: (requires
acpitools):
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| -- Hex converter, for RGB colors | |
| function hex(inp) | |
| return inp > 16 and string.format("%X", inp) or string.format("0%X", inp) | |
| end | |
| -- Battery monitor | |
| mybattmon = widget({ type = "textbox", name = "mybattmon", align = "right" }) | |
| function battery_status () | |
| local output={} -- output buffer | |
| local fd=io.popen("acpitool -b", "r") -- list present batteries | |
| local line=fd:read() | |
| while line do -- there might be several batteries | |
| local battery_num = string.match(line, "Battery \#(%d+)") | |
| local battery_load = string.match(line, " (%d*)\.%d+%%") | |
| local time_rem = string.match(line, "(%d+\:%d+)\:%d+") | |
| if battery_num and battery_load and time_rem then | |
| table.insert(output, "<span color=\"#" | |
| .. hex(170 * (100 - tonumber(battery_load)) / 100) | |
| .. hex(170 * tonumber(battery_load) / 100) | |
| .. "00\">" .. time_rem .. " " .. battery_load .. "%</span>") | |
| elseif battery_num and battery_load then -- remaining time unavailable | |
| table.insert(output, "<span color=\"#00AA00\">" .. battery_load.."%</span>") | |
| end | |
| line=fd:read() -- read next line | |
| end | |
| return table.concat(output," ") | |
| end | |
| mybattmon.text = " " .. battery_status() .. " " | |
| my_battmon_timer=timer({timeout=17}) | |
| my_battmon_timer:add_signal("timeout", function() | |
| mybattmon.text = " " .. battery_status() .. " " | |
| end) | |
| my_battmon_timer:start() |
The nice thing about it is that it changes its color dynamically (and
linearly). 0% battery = #FF0000, 100% = #00FF00.
CPU temperature monitor
Based on the same code, looks very similar to the battery widget:
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| -- Heat monitor | |
| myheatmon = widget({ type = "textbox", name = "myheatmon", align = "right" }) | |
| function heat_status () | |
| local output = {} -- output buffer | |
| local fd = io.popen("acpitool -t", "r") -- list present thermal zones | |
| local line = fd:read() | |
| while line do -- there might be several thermal zones | |
| local heat_num = string.match(line, "Thermal zone (%d+)") | |
| local heat_load = string.match(line, "(%d+) C") | |
| if heat_num and heat_load then | |
| table.insert(output, "<span color=\"#" | |
| .. hex(255 * tonumber(heat_load) / 105) | |
| .. hex(255 * (105 - tonumber(heat_load)) / 105) | |
| .. "00\">" .. heat_load .. "℃</span>") | |
| end | |
| line=fd:read() -- read next line | |
| end | |
| return table.concat(output," ") | |
| end | |
| myheatmon.text = heat_status() .. " " | |
| my_heatmon_timer = timer({timeout = 19}) | |
| my_heatmon_timer:add_signal("timeout", function() | |
| myheatmon.text = heat_status() .. " " | |
| end) | |
| my_heatmon_timer:start() |
Update
I’ve updated the temperature monitor to work without acpitool. Now instead
of relying on legacy files in /proc/, it uses the new ACPI interface
provided by /sys/ files.
I have also replaced the battery monitor with the gnome-power-manager applet,
as it is more powerful and consumes less on-screan real estate. Start it from
your rc.lua like this:
awful.util.spawn("gnome-power-manager")