62 lines
2.1 KiB
Lua
62 lines
2.1 KiB
Lua
---------------------------------------------------------------------------
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--- Create easily new buttons objects ignoring certain modifiers.
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--
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-- @author Julien Danjou <julien@danjou.info>
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-- @copyright 2009 Julien Danjou
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-- @classmod awful.button
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---------------------------------------------------------------------------
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-- Grab environment we need
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local setmetatable = setmetatable
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local ipairs = ipairs
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local capi = { button = button }
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local gmath = require("gears.math")
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local gtable = require("gears.table")
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local button = { mt = {} }
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--- Modifiers to ignore.
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--
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-- By default this is initialized as `{ "Lock", "Mod2" }`
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-- so the `Caps Lock` or `Num Lock` modifier are not taking into account by awesome
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-- when pressing keys.
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--
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-- @table ignore_modifiers
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local ignore_modifiers = { "Lock", "Mod2" }
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--- Create a new button to use as binding.
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--
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-- This function is useful to create several buttons from one, because it will use
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-- the ignore_modifier variable to create more button with or without the ignored
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-- modifiers activated.
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--
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-- For example if you want to ignore CapsLock in your buttonbinding (which is
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-- ignored by default by this function), creating button binding with this function
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-- will return 2 button objects: one with CapsLock on, and the other one with
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-- CapsLock off.
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--
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-- @treturn table A table with one or several button objects.
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function button.new(mod, _button, press, release)
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local ret = {}
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local subsets = gmath.subsets(ignore_modifiers)
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for _, set in ipairs(subsets) do
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ret[#ret + 1] = capi.button({ modifiers = gtable.join(mod, set),
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button = _button })
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if press then
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ret[#ret]:connect_signal("press", function(_, ...) press(...) end)
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end
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if release then
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ret[#ret]:connect_signal("release", function (_, ...) release(...) end)
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end
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end
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return ret
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end
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function button.mt:__call(...)
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return button.new(...)
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end
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return setmetatable(button, button.mt)
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-- vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
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