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|
---------------------------------
-- Author: Andrei Thorp --
-- Copyright 2010 Andrei Thorp --
---------------------------------
-- Dependencies: setxkbmap (shell command)
-- Ideas:
-- * user specified rewrite table: convert us(dvorak) to "Dvorak"
-- * use formatting system to allow people to format their text widgets
-- * allow the user to override the text widget with some other widget
-- * filter out the current layout from the menu that appears on click
-- * let user configure the quick update delay (1 second) in case their
-- computer is unusually slow or quick or something
local setmetatable = setmetatable
local pairs = pairs
local ipairs = ipairs
local widget = widget
local io = {
popen = io.popen
}
local awful = require("awful")
local lib = {
hooks = require("obvious.lib.hooks"),
markup = require("obvious.lib.markup")
}
local defaults = {}
defaults.layouts = {}
defaults.menu = nil
defaults.widget = widget({ type = "textbox" })
defaults.widget.text = "..."
-- Clone the defaults to the used settings
local settings = {}
for key, value in pairs(defaults) do
settings[key] = value
end
module("obvious.keymap_switch")
-- Updates once after a short delay and then unregisters its timer
local function delayed_update_once(start)
if start == true then
lib.hooks.timer.register(1, 1, delayed_update_once, "One-off update for keymap widget")
lib.hooks.timer.start(delayed_update_once)
else
update()
lib.hooks.timer.unregister(delayed_update_once)
end
end
setup_done = false
local function init_once()
if setup_done then
return
end
lib.hooks.timer.register(5, 60, update, "Update for the keymap widget")
lib.hooks.timer.start(update)
delayed_update_once(true)
setup_done = true
end
local function init(widget)
init_once()
-- Use the default widget if not specified
if widget then
settings.widget = widget
end
-- Reconfigure the menu immediately
set_layouts(settings.layouts)
-- Set up the on-click menu event
settings.widget:buttons(awful.util.table.join(
awful.button({ }, 1, function() settings.menu:toggle() end)
))
return settings.widget
end
-- Returns the current keymap, as discovered from setxkbmap
local function get_current_keymap()
local fd = io.popen("setxkbmap -print")
if not fd then return end
for line in fd:lines() do
if line:match("xkb_symbols") then
local keymap = line:match("\+.*\+")
fd:close()
if not keymap then
return "unknown layout"
else
return keymap:sub(2, -2)
end
end
end
fd:close()
return "unknown layout"
end
local function switch_keymap(layout_string)
awful.util.spawn("setxkbmap \"" .. layout_string .. "\"")
delayed_update_once(true)
end
function set_layouts(layouts_table)
settings.layouts = layouts_table or settings.layouts
newitems = {}
for index, value in ipairs(settings.layouts) do
newitems[index] = { value, function() switch_keymap(value) end }
end
settings.menu = awful.menu.new({
id = "keymap_switch",
items = newitems
})
end
function update()
settings.widget.text = get_current_keymap()
end
setmetatable(_M, { __call = function() return init(settings.widget) end }) -- TODO let the user specify widget here
-- vim: filetype=lua:expandtab:shiftwidth=4:tabstop=4:softtabstop=4:encoding=utf-8:textwidth=80
|
