----------------------------------------------------------------------------

-- @author Julien Danjou <julien@danjou.info>

-- @copyright 2008 Julien Danjou

-- @release @AWESOME_VERSION@

----------------------------------------------------------------------------

-- Grab environment

local os = os

local io = io

local http = require("socket.http")

local ltn12 = require("ltn12")

local setmetatable = setmetatable

local util = require("awful.util")

local hooks = require("awful.hooks")

local capi =

{

wibox = wibox,

widget = widget,

image = image

}

--- Root window image display library

module("telak")

local data = setmetatable({}, { __mode = 'k' })

-- Update a telak wibox.

-- @param w The wibox to update.

local function update(w)

local tmp = os.tmpname()

http.request{url = data[w].image, sink = ltn12.sink.file(io.open(tmp, "w"))}

local img = capi.image(tmp)

if img then

w:geometry({ width = img.width, height = img.height })

w.widgets.image = img

else

w.visible = false

end

os.remove(tmp)

end

--- Create a new telak wibox. This will be automagically update to show a

-- local or remote image.

-- @param args A table with arguments: image is the local or remote image.

-- Timer can be specified to set the time in seconds between two update.

-- Default is 300 seconds.

-- @return The wibox. You need to attach it to a screen and to set its

-- coordinates as you want.

local function new(_, args)

if not args or not args.image then return end

-- Create wibox

local w = capi.wibox({ position = "floating" })

data[w] = { image = args.image }

local wimg = capi.widget({ type = "imagebox" })

w.widgets = wimg

data[w].cb = function () update(w) end

hooks.timer.register(args.timer or 300, data[w].cb)

update(w)

return w

end

--- Delete a telak wibox.

-- @param w The wibox.

function delete(w)

if data[w] then

hooks.timer.unregister(data[w].cb)

data[w] = nil

end

end

setmetatable(_M, { __call = new })

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