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path: root/.config/awesome/rc.lua
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-- If LuaRocks is installed, make sure that packages installed through it are
-- found (e.g. lgi). If LuaRocks is not installed, do nothing.
pcall(require, "luarocks.loader")
-- Standard awesome library
local gears = require("gears")
local awful = require("awful")
require("awful.autofocus")
-- Widget and layout library
local wibox = require("wibox")
-- Theme handling library
local beautiful = require("beautiful")
-- Notification library
local naughty = require("naughty")
local menubar = require("menubar")
local hotkeys_popup = require("awful.hotkeys_popup")
-- require("awful.hotkeys_popup.keys")
-- Enable hotkeys help widget for VIM and other apps
-- when client with a matching name is opened:
require("awful.hotkeys_popup.keys")

-- Error handling -----------------------------------------------------------
-- Check if awesome encountered an error during startup and fell back to
-- another config (This code will only ever execute for the fallback config)
if awesome.startup_errors then
    naughty.notify({ preset = naughty.config.presets.critical,
                     title = "Oops, there were errors during startup!",
                     text = awesome.startup_errors })
end

-- Handle runtime errors after startup
do
    local in_error = false
    awesome.connect_signal("debug::error", function (err)
        -- Make sure we don't go into an endless error loop
        if in_error then return end
        in_error = true

        naughty.notify({ preset = naughty.config.presets.critical,
                         title = "Oops, an error happened!",
                         text = tostring(err) })
        in_error = false
    end)
end
-----------------------------------------------------------------------------

-- Variable definitions -----------------------------------------------------
-- Themes define colours, icons, font and wallpapers.
beautiful.init(gears.filesystem.get_themes_dir() .. "default/theme.lua")

-- This is used later as the default terminal and editor to run.
terminal = "st -e tmux"
editor = "nvim"
editor_cmd = "st -e nvim"

modkey = "Mod4"

-- Table of layouts to cover with awful.layout.inc, order matters.
awful.layout.layouts = {
    awful.layout.suit.tile,
    awful.layout.suit.tile.bottom,
    awful.layout.suit.max,
    awful.layout.suit.floating,
}
-----------------------------------------------------------------------------

-- Keyboard map indicator and switcher
mykeyboardlayout = awful.widget.keyboardlayout()

-- Wibar --------------------------------------------------------------------

-- Create a textclock widget
mytextclock = wibox.widget.textclock("%A %d %b %I:%M %p")

-- Create a wibox for each screen and add it
local taglist_buttons = gears.table.join(
                    awful.button({ }, 1, function(t) t:view_only() end),
                    awful.button({ modkey }, 1, function(t)
                                              if client.focus then
                                                  client.focus:move_to_tag(t)
                                              end
                                          end),
                    awful.button({ }, 3, awful.tag.viewtoggle),
                    awful.button({ modkey }, 3, function(t)
                                              if client.focus then
                                                  client.focus:toggle_tag(t)
                                              end
                                          end),
                    awful.button({ }, 4, function(t) awful.tag.viewprev(t.screen) end),
                    awful.button({ }, 5, function(t) awful.tag.viewnext(t.screen) end)
                )

local my_tags = { "a", "s", "d", "f", "u", "i", "o", "p" }

awful.screen.connect_for_each_screen(function(s)
    -- Each screen has its own tag table.
    awful.tag(my_tags, s, awful.layout.layouts[1])

    -- Create an imagebox widget which will contain an icon indicating which layout we're using.
    -- We need one layoutbox per screen.
    s.mylayoutbox = awful.widget.layoutbox(s)
    s.mylayoutbox:buttons(gears.table.join(
                           awful.button({ }, 1, function () awful.layout.inc( 1) end),
                           awful.button({ }, 3, function () awful.layout.inc(-1) end),
                           awful.button({ }, 4, function () awful.layout.inc( 1) end),
                           awful.button({ }, 5, function () awful.layout.inc(-1) end)))
    -- Create a taglist widget
    s.mytaglist = awful.widget.taglist {
        screen  = s,
        filter  = awful.widget.taglist.filter.all,
        buttons = taglist_buttons
    }

    -- Create the wibox
    s.mywibox = awful.wibar({ position = "bottom", screen = s })

    -- Add widgets to the wibox
    s.mywibox:setup {
        layout = wibox.layout.align.horizontal,
        { -- Left widgets
            layout = wibox.layout.fixed.horizontal,
            s.mytaglist,
        },
        nil, -- Middle widget
        { -- Right widgets
            layout = wibox.layout.fixed.horizontal,
            mykeyboardlayout,
            mytextclock,
            wibox.widget.systray(),
            s.mylayoutbox,
        },
    }
end)
-----------------------------------------------------------------------------

-- Key bindings -------------------------------------------------------------
globalkeys = gears.table.join(
    awful.key({ modkey, "Control" }, "s", hotkeys_popup.show_help,
              {description="show help", group="awesome"}),

    awful.key({ modkey }, "Escape", awful.tag.history.restore,
              {description = "go back", group = "tag"}),

    -- Move
    awful.key({ modkey }, "j", function () awful.client.focus.byidx( 1) end,
        {description = "focus next by index", group = "client"}),
    awful.key({ modkey }, "k", function () awful.client.focus.byidx(-1) end,
        {description = "focus previous by index", group = "client"}),

    -- Layout manipulation
    awful.key({ modkey, "Shift" }, "j", function () awful.client.swap.byidx(  1)    end,
              {description = "swap with next client by index", group = "client"}),
    awful.key({ modkey, "Shift" }, "k", function () awful.client.swap.byidx( -1)    end,
              {description = "swap with previous client by index", group = "client"}),

    -- Standard program
    awful.key({ modkey,           }, "Return", function () awful.spawn(terminal) end,
              {description = "open a terminal", group = "launcher"}),
    awful.key({ modkey, "Control" }, "r", awesome.restart,
              {description = "reload awesome", group = "awesome"}),
    awful.key({ modkey, "Control" }, "q", awesome.quit,
              {description = "quit awesome", group = "awesome"}),

    awful.key({ modkey,           }, "g",     function () awful.tag.incmwfact( 0.05)          end,
              {description = "increase master width factor", group = "layout"}),
    awful.key({ modkey,           }, "v",     function () awful.tag.incmwfact(-0.05)          end,
              {description = "decrease master width factor", group = "layout"}),

    awful.key({ modkey, "Shift"   }, "g",     function () awful.tag.incnmaster( 1, nil, true) end,
              {description = "increase the number of master clients", group = "layout"}),
    awful.key({ modkey, "Shift"   }, "v",     function () awful.tag.incnmaster(-1, nil, true) end,
              {description = "decrease the number of master clients", group = "layout"}),

    awful.key({ modkey, }, "Tab", function () awful.layout.inc(1) end,
              {description = "select next", group = "layout"}),
    awful.key({ modkey, "Shift" }, "Tab", function () awful.layout.inc(-1) end,
              {description = "select previous", group = "layout"}),

    -- Prompt
    awful.key({ modkey }, "r", function () awful.spawn("rofi -show run") end,
              {description = "Use Rofi to start a new program.", group = "launcher"}),

    -- Widgets
    awful.key({ modkey }, "space", function () mykeyboardlayout.next_layout() end,
              {description = "next keyboard layout", group = "widgets"}),

    -- Audio
    awful.key({ modkey }, "h", function () awful.spawn("amixer -q sset Master 1%+") end,
              {description = "Increase volume", group = "audio"}),
    awful.key({ modkey }, "n", function () awful.spawn("amixer -q sset Master 1%-") end,
              {description = "Decrease volume", group = "audio"}),
    awful.key({ modkey }, "m", function () awful.spawn("amixer -q sset Master toggle") end,
              {description = "Toggle mute", group = "audio"}),

    -- Music
    awful.key({ modkey }, "x", function () awful.spawn("mpc toggle") end,
              {description = "Pause/Resume MPD playback", group = "music"}),
    awful.key({ modkey, "Shift" }, "x", function () awful.spawn("bash -c ~/.local/bin/mpd_show.sh") end,
              {description = "Display song.", group = "music"}),

    awful.key({ modkey }, "z", function () awful.spawn("mpc next") end,
              {description = "MPD next song", group = "music"}),
    awful.key({ modkey, "Shift" }, "z", function () awful.spawn("mpc prev") end,
              {description = "MPD previous song", group = "music"}),

    -- Utilities
    awful.key({ modkey }, "e", function () awful.spawn("bash -c ~/.local/bin/unmount_usb.sh") end,
              {description = "Eject USB", group = "utilities"}),
    awful.key({ modkey, "Control" }, "p", function () awful.spawn("scrot -ze 'mv $f ~/stuff/pictures/screenshots/'") end,
              {description = "Take a screenshot", group = "utilities"})

)

clientkeys = gears.table.join(
    awful.key({ modkey }, "w", function (c) c:kill() end,
              {description = "close", group = "client"}),

    awful.key({ modkey }, "t",  awful.client.floating.toggle                     ,
              {description = "toggle floating", group = "client"}),

    awful.key({ modkey, "Shift" }, "Return", function (c) c:swap(awful.client.getmaster()) end,
              {description = "move to master", group = "client"}),

    awful.key({ modkey, "Shift" }, "t", function (c) c.ontop = not c.ontop end,
              {description = "toggle keep on top", group = "client"})
)

-- Bind all key numbers to tags.
-- Be careful: we use keycodes to make it work on any keyboard layout.
-- This should map on the top row of your keyboard, usually 1 to 9.
for i = 1, #my_tags do
    globalkeys = gears.table.join(globalkeys,
        -- View tag only.
        awful.key({ modkey }, my_tags[i],
                  function ()
                        local screen = awful.screen.focused()
                        local tag = screen.tags[i]
                        if tag then
                           tag:view_only()
                        end
                  end,
                  {description = "view tag "..my_tags[i], group = "tag"}),
        -- Move client to tag.
        awful.key({ modkey, "Shift" }, my_tags[i],
                  function ()
                      if client.focus then
                          local tag = client.focus.screen.tags[i]
                          if tag then
                              client.focus:move_to_tag(tag)
                          end
                     end
                  end,
                  {description = "move focused client to tag "..my_tags[i], group = "tag"})
    )
end

clientbuttons = gears.table.join(
    awful.button({ }, 1, function (c)
        c:emit_signal("request::activate", "mouse_click", {raise = true})
    end),
    awful.button({ modkey }, 1, function (c)
        c:emit_signal("request::activate", "mouse_click", {raise = true})
        awful.mouse.client.move(c)
    end),
    awful.button({ modkey }, 3, function (c)
        c:emit_signal("request::activate", "mouse_click", {raise = true})
        awful.mouse.client.resize(c)
    end)
)

-- Set keys
root.keys(globalkeys)
-- }}}

-- Rules --------------------------------------------------------------------
-- Rules to apply to new clients (through the "manage" signal).
awful.rules.rules = {
    -- All clients will match this rule.
    { rule = { },
      properties = { border_width = beautiful.border_width,
                     border_color = beautiful.border_normal,
                     focus = awful.client.focus.filter,
                     raise = true,
                     keys = clientkeys,

                     maximized_vertical   = false,
                     maximized_horizontal = false,
                     size_hints_honor = false,

                     buttons = clientbuttons,
                     screen = awful.screen.preferred,
                     placement = awful.placement.no_overlap+awful.placement.no_offscreen
     }
    },

    -- Floating clients.
    { rule_any = {
        instance = {
          "DTA",  -- Firefox addon DownThemAll.
          "copyq",  -- Includes session name in class.
          "pinentry",
        },
        class = {
          "Arandr",
          "Blueman-manager",
          "Gpick",
          "Kruler",
          "MessageWin",  -- kalarm.
          "Sxiv",
          "Tor Browser", -- Needs a fixed window size to avoid fingerprinting by screen size.
          "Wpa_gui",
          "veromix",
          "xtightvncviewer"},

        -- Note that the name property shown in xprop might be set slightly after creation of the client
        -- and the name shown there might not match defined rules here.
        name = {
          "Event Tester",  -- xev.
        },
        role = {
          "AlarmWindow",  -- Thunderbird's calendar.
          "ConfigManager",  -- Thunderbird's about:config.
          "pop-up",       -- e.g. Google Chrome's (detached) Developer Tools.
        }
      }, properties = { floating = true }},
}
-----------------------------------------------------------------------------

-- Signals ------------------------------------------------------------------
-- Signal function to execute when a new client appears.
client.connect_signal("manage", function (c)
    -- Set the windows at the slave,
    -- i.e. put it at the end of others instead of setting it master.
    -- if not awesome.startup then awful.client.setslave(c) end

    if awesome.startup
      and not c.size_hints.user_position
      and not c.size_hints.program_position then
        -- Prevent clients from being unreachable after screen count changes.
        awful.placement.no_offscreen(c)
    end
end)


-- Enable sloppy focus, so that focus follows mouse.
client.connect_signal("mouse::enter", function(c)
    c:emit_signal("request::activate", "mouse_enter", {raise = false})
end)

client.connect_signal("focus", function(c) c.border_color = beautiful.border_focus end)
client.connect_signal("unfocus", function(c) c.border_color = beautiful.border_normal end)