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author | Adrian C. (anrxc) <anrxc@sysphere.org> | 2010-03-14 01:55:33 +0100 |
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committer | Adrian C. (anrxc) <anrxc@sysphere.org> | 2010-03-14 01:55:33 +0100 |
commit | 237470c8f45190b213e3a173ce6ae1a74b3e11fe (patch) | |
tree | 7f53c8144761947d4bde20715bcad34f4be0d6c0 /widgets/volume.lua | |
parent | 9a82d4113a8271b7dfc7506f2b07379e3ede89a8 (diff) | |
download | vicious-legacy-237470c8f45190b213e3a173ce6ae1a74b3e11fe.tar.xz |
API: transform widgets namespace table to a directory
Diffstat (limited to 'widgets/volume.lua')
-rw-r--r-- | widgets/volume.lua | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/widgets/volume.lua b/widgets/volume.lua new file mode 100644 index 0000000..42f72e4 --- /dev/null +++ b/widgets/volume.lua @@ -0,0 +1,50 @@ +--------------------------------------------------- +-- Licensed under the GNU General Public License v2 +-- * (c) 2010, Adrian C. <anrxc@sysphere.org> +--------------------------------------------------- + +-- {{{ Grab environment +local tonumber = tonumber +local io = { popen = io.popen } +local setmetatable = setmetatable +local string = { match = string.match } +-- }}} + + +-- Volume: provides volume levels and state of requested ALSA mixers +module("vicious.widgets.volume") + + +-- {{{ Volume widget type +local function worker(format, warg) + local mixer_state = { + ["on"] = "♫", -- "", + ["off"] = "♩" -- "M" + } + + -- Get mixer control contents + local f = io.popen("amixer get " .. warg) + local mixer = f:read("*all") + f:close() + + -- Capture mixer control state: [5%] ... ... [on] + local volu, mute = string.match(mixer, "([%d]+)%%.*%[([%l]*)") + -- Handle mixers without data + if volu == nil then + return {0, mixer_state["off"]} + end + + -- Handle mixers without mute + if mute == "" and volu == "0" + -- Handle mixers that are muted + or mute == "off" then + mute = mixer_state["off"] + else + mute = mixer_state["on"] + end + + return {tonumber(volu), mute} +end +-- }}} + +setmetatable(_M, { __call = function(_, ...) return worker(...) end }) |