widget_fun.lua

local naughty = require("naughty")
local beautiful = require("beautiful")
local math = require("math")
local pairs = pairs

module("widget_fun")


-- Battery (based on http://awesome.naquadah.org/wiki/Gigamo_Battery_Widget)

local limits = { {25, 5},
                 {12, 3},
                 { 7, 1},
                  {0}}

local function getnextlim (num)
    for ind, pair in pairs(limits) do
        lim = pair[1]; step = pair[2]; nextlim = limits[ind+1][1] or 0
        if num > nextlim then
            repeat
                lim = lim - step
            until num > lim
            if lim < nextlim then
                lim = nextlim
            end
            return lim
        end
    end
end


function batclosure ()
    local nextlim = limits[1][1]
    return function (_, args)
        local prefix = "⚡"
        local state, charge = args[1], args[2]
        if not charge then return end
        if state == "−" then
            dirsign = "↓"
            prefix = "Bat:"
            if charge <= nextlim then
                naughty.notify({title = "⚡ Lystring! ⚡",
                                text = "Batteriet har nått låg nivå ( ⚡ "
                                        ..charge.."%)!",
                                timeout = 7,
                                position = "bottom_right",
                                fg = beautiful.fg_focus,
                                bg = beautiful.bg_focus
                               })
                nextlim = getnextlim(charge)
            end
        elseif state == "+" then
            dirsign = "↑"
            nextlim = limits[1][1]
        else
            return " ⚡ "
        end
        if dir ~= 0 then charge = charge.."%" end
        return " "..prefix.." "..dirsign..charge..dirsign.." "
    end
end

function watch_temp (thermowidget, args)
    local temp = args[1]
    if temp > 87 then
        naughty.notify({title = "Värmgång i systemet!",
                        text = "Temperatur är för hög ("..temp.."°C)",
                        timeout = 3,
                        position = "bottom_left",
                        fg = beautiful.fg_focus,
                        bg = beautiful.bg_focus
                       })
    end
    return " "..math.ceil(temp).."°"
end

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