widget.lua

-- Copyright 2013 mokasin
-- This file is part of the Awesome Pulseaudio Widget (APW).
--
-- APW is free software: you can redistribute it and/or modify
-- it under the terms of the GNU General Public License as published by
-- the Free Software Foundation, either version 3 of the License, or
-- (at your option) any later version.
--
-- APW is distributed in the hope that it will be useful,
-- but WITHOUT ANY WARRANTY; without even the implied warranty of
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-- GNU General Public License for more details.
--
-- You should have received a copy of the GNU General Public License
-- along with APW. If not, see <http://www.gnu.org/licenses/>.

local awful = require("awful")
local wibox = require("wibox")
local naughty = require("naughty")
local beautiful = require("beautiful")
local pulseaudio = require("apw.pulseaudio")


-- Configuration variables
local step          = 0.05      -- stepsize for volume change (ranges from 0 to 1)
local mixer         = 'pavucontrol'
local mixer_class   = 'Pavucontrol'
local veromix       = 'veromix' --veromix command
local veromix_class = 'veromix'
local icon_theme    = 'gnome'
local icon_path     = '/usr/share/icons/'..icon_theme..'/32x32/status/'
local icon_level    = { [0] = 'muted', 'low', 'medium', 'high' }

local apw_theme = (type(beautiful.apw) == "table") and beautiful.apw  or {}

-- default configuration overridden by Beautiful theme
color           = apw_theme.fg_color        or '#1a4b5c'
color_bg        = apw_theme.bg_color        or '#0F1419'
color_mute      = apw_theme.mute_fg_color   or '#be2a15'
color_bg_mute   = apw_theme.mute_bg_color   or color_bg
color_amp       = apw_theme.amp_fg_color    or '#3465a4'
color_bg_amp    = apw_theme.amp_bg_color    or color
margin_right    = apw_theme.margin_right    or 0
margin_left     = apw_theme.margin_left     or 0
margin_top      = apw_theme.margin_top      or 1
margin_bottom   = apw_theme.margin_bottom   or 5
width           = apw_theme.width           or 10


-- End of configuration

local p = pulseaudio:Create()

local pulseBar = awful.widget.progressbar()
local pulseBox = wibox.widget.textbox(1)
local pulseLayout = wibox.layout.fixed.horizontal()

pulseBar:set_width(width)
pulseBar:set_vertical(true)
pulseBar.step = step
pulseBar.minstep = minstep

pulseLayout:add(pulseBar)
pulseLayout:add(pulseBox)

local pulseWidget = wibox.widget.background(wibox.layout.margin(pulseLayout, margin_left, margin_right, margin_top, margin_bottom), color_bg)

function pulseWidget.setColor(mute, volume)
    if mute then
        pulseBar:set_color(color_mute)
        pulseBar:set_background_color(color_bg_mute)
    else
        if p.Volume > 1.0 then
            pulseBar:set_color(color_amp)
            pulseBar:set_background_color(color_bg_amp)
        else
            pulseBar:set_color(color)
            pulseBar:set_background_color(color_bg)
        end
    end
end

local function _update()
    if p.Volume > 1.0 then
        pulseBar:set_value(p.Volume - 1.0)
    else
        pulseBar:set_value(p.Volume)
    end
    pulseBox:set_text(p.Perc)
    pulseWidget.setColor(p.Mute, p.Volume)
end

function pulseWidget.SetMixer(command)
    mixer = command
end

function pulseWidget.notify(text)
    if last_text ~= text then
        last_text = text;
        local icon = {
			[false] = icon_path..'/audio-volume-'..icon_level[math.ceil(p.Volume/0.5)]..'.png',
             [true] = icon_path..'/audio-volume-'..icon_level[0]..'.png' }
        notid = naughty.notify({ title = 'apw', text = text, icon = icon[p.Mute],
                                 timeout = 2, replaces_id = notid }).id
    end
end

function pulseWidget.Up(notify)
    notify = notify or 1
    p:SetVolume(p.Volume + pulseBar.step)
    if notify ~=0 then
        pulseWidget.notify('Volume: ' .. p.Perc)
    end
    _update()
end

function pulseWidget.Down(notify)
    notify = notify or 1
    p:SetVolume(p.Volume - pulseBar.step)
    if notify ~= 0 then
        pulseWidget.notify('Volume: ' .. p.Perc)
    end
    _update()
end

function pulseWidget.ToggleMute(notify)
    notify = notify or 1
    p:ToggleMute()
    if notify ~= 0 then
        local msg = { [false] = 'Unmuted: ', [true] = 'Muted: ' }
        pulseWidget.notify( msg[p.Mute] .. p.Perc)
    end
    _update()
end

function pulseWidget.Update()
    p:UpdateState()
     _update()
end

function pulseWidget.LaunchMixer()
    run_or_kill(mixer,  { class = mixer_class })
    _update()
end

function pulseWidget.LaunchVeromix()
    run_or_kill(veromix, { class = veromix_class })
    _update()
end



function run_or_kill(cmd, properties)
    local clients = client.get()
    local focused = awful.client.next(0)
    local findex = 0
    local matched_clients = {}
    local n = 0
    for i, c in pairs(clients) do
        --make an array of matched clients
        if match(properties, c) then
            n = n + 1
            matched_clients[n] = c
            if c == focused then
                findex = n
            end
        end
    end
    if n > 0 then
        local c = matched_clients[1]
        -- if the focused window matched switch focus to next in list
        if 0 < findex and findex < n then
            c = matched_clients[findex+1]
        end
        local ctags = c:tags()
        if #ctags == 0 then
            -- ctags is empty, show client on current tag
            local curtag = awful.tag.selected()
            awful.client.movetotag(curtag, c)
        else
            -- Otherwise, pop to first tag client is visible on
            awful.tag.viewonly(ctags[1])
        end
        -- And then kill the client
        c:kill()
        return
    end
    awful.util.spawn(cmd)
end

-- Returns true if all pairs in table1 are present in table2
function match (table1, table2)
    for k, v in pairs(table1) do
        if table2[k] ~= v and not table2[k]:find(v) then
            return false
        end
    end
    return true
end



-- register mouse button actions
buttonsTable = awful.util.table.join(
        awful.button({ }, 1,  pulseWidget.LaunchVeromix),
        awful.button({ }, 12, function() pulseWidget.ToggleMute(0) end),
        awful.button({ }, 2,  function() pulseWidget.ToggleMute(0) end),
        awful.button({ }, 3,  pulseWidget.LaunchMixer),
        awful.button({ }, 4,  function() pulseWidget.Up(0) end),
        awful.button({ }, 5,  function() pulseWidget.Down(0) end)
    )
pulseWidget:buttons(buttonsTable)


-- initialize
_update()

return pulseWidget