105 lines
3.3 KiB
Lua
105 lines
3.3 KiB
Lua
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---------------------------------------------------------------------------
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-- @author Aleksey Fedotov <lexa@cfotr.com>
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-- @copyright 2015 Aleksey Fedotov
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-- @release @AWESOME_VERSION@
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---------------------------------------------------------------------------
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local capi = {awesome = awesome,
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awful = awful}
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local setmetatable = setmetatable
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local os = os
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local textbox = require("wibox.widget.textbox")
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local button = require("awful.button")
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local util = require("awful.util")
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local widget_base = require("wibox.widget.base")
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--- Keyboard Layout widget.
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-- awful.widget.keyboardlayout
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local keyboardlayout = { mt = {} }
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-- Callback for updaing current layout
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local function update_status (keyboardlayout)
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keyboardlayout.current = awesome.xkb_get_layout_group();
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local text = ""
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if (#keyboardlayout.layout > 0) then
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text = (" " .. keyboardlayout.layout[keyboardlayout.current] .. " ")
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end
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keyboardlayout.widget:set_text(text)
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end
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-- Callback for updating list of layouts
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local function update_layout(keyboardlayout)
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keyboardlayout.layout = {};
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local group_names = awesome.xkb_get_group_names();
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-- typical layout string looks like "pc+us+ru:2+de:3+ba:4+inet"
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-- and we want to get only three mathes: "us", "ru:2", "de:3" "ba:4"
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-- also please note, that numbers of groups reported by xkb_get_group_names
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-- is greater by one of the real group number
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local first_group = string.match(group_names, "+(%a+)");
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if (not first_group) then
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error ("Failed to get list of keyboard groups");
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return;
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end
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keyboardlayout.layout[0] = first_group;
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for name, number_str in string.gmatch(group_names, "+(%a+):(%d)") do
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group = tonumber(number_str);
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keyboardlayout.layout[group - 1] = name;
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end
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update_status(keyboardlayout)
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end
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--- Create a keyboard layout widget. It shows current keyboard layout name in a textbox.
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-- @return A keyboard layout widget.
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function keyboardlayout.new()
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local widget = textbox()
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local keyboardlayout = widget_base.make_widget(widget)
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keyboardlayout.widget = widget
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update_layout(keyboardlayout);
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keyboardlayout.next_layout = function()
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new_layout = (keyboardlayout.current + 1) % (#keyboardlayout.layout + 1)
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keyboardlayout.set_layout(new_layout)
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end
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keyboardlayout.set_layout = function(group_number)
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if (0 > group_number) or (group_number > #keyboardlayout.layout) then
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error("Invalid group number: " .. group_number ..
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"expected number from 0 to " .. #keyboardlayout.layout)
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return;
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end
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awesome.xkb_set_layout_group(group_number);
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end
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-- callback for processing layout changes
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capi.awesome.connect_signal("xkb::map_changed",
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function () update_layout(keyboardlayout) end)
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capi.awesome.connect_signal("xkb::group_changed",
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function () update_status(keyboardlayout) end);
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-- Mouse bindings
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keyboardlayout:buttons(
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util.table.join(button({ }, 1, keyboardlayout.next_layout))
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)
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return keyboardlayout
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end
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local _instance = nil;
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function keyboardlayout.mt:__call(...)
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if _instance == nil then
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_instance = keyboardlayout.new(...)
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end
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return _instance
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end
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return setmetatable(keyboardlayout, keyboardlayout.mt)
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-- vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
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