/usr/share/awesome/lib/freedesktop/desktop.lua is in awesome-extra 2017110501.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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Awesome-Freedesktop
Freedesktop.org compliant desktop entries and menu
Desktop section
Licensed under GNU General Public License v2
* (c) 2016, Luke Bonham
* (c) 2009-2015, Antonio Terceiro
--]]
local awful = require("awful")
local theme = require("beautiful")
local utils = require("menubar.utils")
local wibox = require("wibox")
local capi = { screen = screen }
local io = io
local ipairs = ipairs
local mouse = mouse
local os = os
local string = { format = string.format }
local table = table
-- Desktop icons
-- freedesktop.desktop
local desktop = {
-- Default desktop basic icons
baseicons = {
[1] = {
label = "This PC",
icon = "computer",
onclick = "computer://"
},
[2] = {
label = "Home",
icon = "user-home",
onclick = os.getenv("HOME")
},
[3] = {
label = "Trash",
icon = "user-trash",
onclick = "trash://"
}
},
-- Default parameters
iconsize = { width = 48, height = 48 },
labelsize = { width = 140, height = 20 },
margin = { x = 20, y = 20 },
}
-- MIME types list
local mime_types = {}
-- Icons positioning
local desktop_current_pos = {}
-- @return iterator on input pipe
local function pipelines(...)
local f = assert(io.popen(...))
return function ()
local data = f:read()
if data == nil then f:close() end
return data
end
end
-- Adds an icon to desktop
-- @param args settings from desktop.add_icons
-- @param label icon string label
-- @param icon icon string file path
-- @param onclick function to execute on click
function desktop.add_single_icon(args, label, icon, onclick)
local s = args.screen
-- define icon dimensions and position
if not desktop_current_pos[s] then
desktop_current_pos[s] = { x = (capi.screen[s].geometry.x + args.iconsize.width + args.margin.x), y = 40 }
end
local totheight = (icon and args.iconsize.height or 0) + (label and args.labelsize.height or 0)
if totheight == 0 then return end
if desktop_current_pos[s].y + totheight > capi.screen[s].geometry.height - 40 then
desktop_current_pos[s].x = desktop_current_pos[s].x + args.labelsize.width + args.iconsize.width + args.margin.x
desktop_current_pos[s].y = 40
end
local common = { screen = s, bg = "#00000000", visible = true, type = "desktop" }
-- create icon container
if icon then
common.width = args.iconsize.width
common.height = args.iconsize.height
common.x = desktop_current_pos[s].x
common.y = desktop_current_pos[s].y
icon = wibox.widget {
image = icon,
resize = false,
widget = wibox.widget.imagebox
}
icon:buttons(awful.button({ }, 1, nil, onclick))
icon_container = wibox(common)
icon_container:set_widget(icon)
desktop_current_pos[s].y = desktop_current_pos[s].y + args.iconsize.height + 5
end
-- create label container
if label then
common.width = args.labelsize.width
common.height = args.labelsize.height
common.x = desktop_current_pos[s].x - (args.labelsize.width/2) + args.iconsize.width/2
common.y = desktop_current_pos[s].y
caption = wibox.widget {
text = label,
align = "center",
forced_width = common.width,
forced_height = common.height,
ellipsize = "middle",
widget = wibox.widget.textbox
}
caption:buttons(awful.button({ }, 1, onclick))
caption_container = wibox(common)
caption_container:set_widget(caption)
end
desktop_current_pos[s].y = desktop_current_pos[s].y + args.labelsize.height + args.margin.y
end
-- Adds base icons (This PC, Trash, etc) to desktop
-- @param args settings from desktop.add_icons
function desktop.add_base_icons(args)
for _,base in ipairs(args.baseicons) do
desktop.add_single_icon(args, base.label, utils.lookup_icon(base.icon), function()
awful.spawn(string.format("%s '%s'", args.open_width, base.onclick))
end)
end
end
-- Looks up a suitable icon for filename
-- @param filename string file name
-- @return icon file path (string)
function desktop.lookup_file_icon(filename)
-- load system MIME types
if #mime_types == 0 then
for line in io.lines("/etc/mime.types") do
if not line:find("^#") then
local parsed = {}
for w in line:gmatch("[^%s]+") do
table.insert(parsed, w)
end
if #parsed > 1 then
for i = 2, #parsed do
mime_types[parsed[i]] = parsed[1]:gsub("/", "-")
end
end
end
end
end
-- try to search a possible icon among standards
local extension = filename:match("%a+$")
local mime = mime_types[extension] or ""
local mime_family = mime:match("^%a+") or ""
local possible_filenames = {
mime, "gnome-mime-" .. mime,
mime_family, "gnome-mime-" .. mime_family,
extension
}
for i, filename in ipairs(possible_filenames) do
local icon = utils.lookup_icon(filename)
if icon then return icon end
end
-- if we don"t find ad icon, then pretend is a plain text file
return utils.lookup_icon("text-x-generic")
end
-- Parse subdirectories and files list from input directory
-- @input dir directory to parse (string)
-- @return files table with found entries
function desktop.parse_dirs_and_files(dir)
local files = {}
local paths = pipelines('find '..dir..' -maxdepth 1 -type d | tail -1')
for path in paths do
if path:match("[^/]+$") then
local file = {}
file.filename = path:match("[^/]+$")
file.path = path
file.show = true
file.icon = utils.lookup_icon("folder")
table.insert(files, file)
end
end
local paths = pipelines('find '..dir..' -maxdepth 1 -type f')
for path in paths do
if not path:find("%.desktop$") then
local file = {}
file.filename = path:match("[^/]+$")
file.path = path
file.show = true
file.icon = desktop.lookup_file_icon(file.filename)
table.insert(files, file)
end
end
return files
end
-- Adds subdirectories and files icons from args.dir
-- @param args settings from desktop.add_icons
function desktop.add_dirs_and_files_icons(args)
for _, file in ipairs(desktop.parse_dirs_and_files(args.dir)) do
if file.show then
local label = args.showlabels and file.filename or nil
local onclick = function () awful.spawn(string.format("%s '%s'", args.open_with, file.path)) end
desktop.add_single_icon(args, label, file.icon, onclick)
end
end
end
-- Main function, adds base, directory and files icons
-- @param args user defined settings, with fallback on defaults
function desktop.add_icons(args)
args = args or {}
args.screen = args.screen or mouse.screen
args.dir = args.dir or os.getenv("HOME") .. "/Desktop"
args.showlabels = args.showlabel or true
args.open_with = args.open_with or "xdg_open"
args.baseicons = args.baseicons or desktop.baseicons
args.iconsize = args.iconsize or desktop.iconsize
args.labelsize = args.labelsize or desktop.labelsize
args.margin = args.margin or desktop.margin
-- trying to fallback on Adwaita if theme.icon_theme is not defined
-- if Adwaita is missing too, no icons will be shown
if not theme.icon_theme then
theme.icon_theme = args.icon_theme or "Adwaita"
end
desktop.add_base_icons(args)
desktop.add_dirs_and_files_icons(args)
end
return desktop
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