mirror of
https://github.com/awesomeWM/awesome
synced 2024-11-17 07:47:41 +01:00
87 lines
2.9 KiB
Lua
87 lines
2.9 KiB
Lua
---------------------------------------------------------------------------
|
|
-- @author dodo
|
|
-- @copyright 2012 dodo
|
|
-- @release @AWESOME_VERSION@
|
|
---------------------------------------------------------------------------
|
|
|
|
local ipairs = ipairs
|
|
local table = table
|
|
local capi = {
|
|
keygrabber = keygrabber }
|
|
|
|
--- Keygrabber Stack
|
|
module("awful.keygrabber")
|
|
|
|
-- Private data
|
|
local grabbers = {}
|
|
local keygrabbing = false
|
|
|
|
|
|
local function grabber(mod, key, event)
|
|
for i, g in ipairs(grabbers) do
|
|
-- continue if the grabber explicitly returns false
|
|
if g(mod, key, event) ~= false then
|
|
break
|
|
end
|
|
end
|
|
end
|
|
|
|
--- Stop grabbing the keyboard for the provided callback.
|
|
-- When no callback is given, the least grabber gets removed (last one added to the stack).
|
|
-- @param g The key grabber that must be removed.
|
|
function stop(g)
|
|
for i, v in ipairs(grabbers) do
|
|
if v == g then
|
|
table.remove(grabbers, i)
|
|
break
|
|
end
|
|
end
|
|
-- stop the global key grabber if the last grabber disappears from stack
|
|
if #grabbers == 0 then
|
|
keygrabbing = false
|
|
capi.keygrabber.stop()
|
|
end
|
|
end
|
|
|
|
---
|
|
-- Grab keyboard and read pressed keys, calling the least callback function from
|
|
-- stack at each key press, until stack is empty. </br>
|
|
-- Calling run with the same callback again will bring the callback
|
|
-- to the top of the stack. </br></br>
|
|
-- The callback function is passed three arguments: </br>
|
|
-- a table containing modifiers keys, a string with the key pressed and a
|
|
-- string with either "press" or "release" to indicate the event type.</br></br>
|
|
-- A callback can return false to pass the events to the next key grabber in the stack.
|
|
-- @param g The key grabber callback that will get the key events until it will be deleted or a new grabber is added.
|
|
-- @return the given callback `g`
|
|
-- @usage Following function can be bound to a key, and used to resize a client
|
|
-- using keyboard.
|
|
-- <p><code>
|
|
-- function resize(c) <br/>
|
|
-- local grabber = awful.keygrabber.run(function(mod, key, event) </br>
|
|
-- if event == "release" then return end </br></br>
|
|
--
|
|
-- if key == 'Up' then awful.client.moveresize(0, 0, 0, 5, c) <br/>
|
|
-- elseif key == 'Down' then awful.client.moveresize(0, 0, 0, -5, c) <br/>
|
|
-- elseif key == 'Right' then awful.client.moveresize(0, 0, 5, 0, c) <br/>
|
|
-- elseif key == 'Left' then awful.client.moveresize(0, 0, -5, 0, c) <br/>
|
|
-- else awful.keygrabber.stop(grabber) <br/>
|
|
-- end <br/><br/>
|
|
--
|
|
-- end) <br/>
|
|
-- end <br/>
|
|
-- </code></p>
|
|
function run(g)
|
|
-- Remove the grabber if its in stack
|
|
stop(g)
|
|
-- Record the grabber has latest added
|
|
table.insert(grabbers, 1, g)
|
|
-- start the keygrabber if its not running already
|
|
if not keygrabbing then
|
|
keygrabbing = true
|
|
capi.keygrabber.run(grabber)
|
|
end
|
|
return g
|
|
end
|
|
|
|
-- vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
|