lib/beautiful.lua.in

   1 ----------------------------------------------------------------------------
   2 -- @author Damien Leone &lt;damien.leone@gmail.com&gt;
   3 -- @author Julien Danjou &lt;julien@danjou.info&gt;
   4 -- @copyright 2008-2009 Damien Leone, Julien Danjou
   5 -- @release @AWESOME_VERSION@
   6 ----------------------------------------------------------------------------
   7
   8 -- Grab environment
   9 local os = os
  10 local print = print
  11 local pcall = pcall
  12 local pairs = pairs
  13 local type = type
  14 local dofile = dofile
  15 local setmetatable = setmetatable
  16 local util = require("awful.util")
  17 local capi =
  18 {
  19     screen = screen,
  20     awesome = awesome,
  21     oocairo = oocairo,
  22     oopango = oopango
  23 }
  24
  25 --- Theme library.
  26 module("beautiful")
  27
  28 -- Local data
  29 local theme
  30 local descs = setmetatable({}, { __mode = 'k' })
  31 local fonts = setmetatable({}, { __mode = 'v' })
  32 local active_font
  33
  34 local function load_font(name)
  35     name = name or active_font
  36     if name and type(name) ~= "string" and descs[name] then
  37         name = descs[name]
  38     end
  39     if fonts[name] then
  40         return fonts[name]
  41     end
  42     -- load new font
  43     local desc = capi.oopango.font_description_from_string(name)
  44
  45     -- Create a temporary surface that we need for computing the size :(
  46     local surface = capi.oocairo.image_surface_create("argb32", 1, 1)
  47     local cr = capi.oocairo.context_create(surface)
  48     local layout
  49     -- Api breakage in oopango
  50     if capi.oopango.cairo_layout_create then
  51         layout = capi.oopango.cairo_layout_create(cr)
  52     else
  53         layout = capi.oopango.cairo.layout_create(cr)
  54     end
  55
  56     layout:set_font_description(desc)
  57
  58     local width, height = layout:get_pixel_size()
  59     local font = { name = name, description = desc, height = height }
  60     fonts[name] = font
  61     descs[desc] = name
  62     return font
  63 end
  64
  65 local function set_font(name)
  66     active_font = load_font(name).name
  67 end
  68
  69 function get_font(name)
  70     return load_font(name).description
  71 end
  72
  73 function get_font_height(name)
  74     return load_font(name).height
  75 end
  76
  77 --- Init function, should be runned at the beginning of configuration file.
  78 -- @param path The theme file path.
  79 function init(path)
  80     if path then
  81         local success
  82         success, theme = pcall(function() return dofile(path) end)
  83
  84         if not success then
  85             return print("E: beautiful: error loading theme file " .. theme)
  86         elseif theme then
  87             -- try and grab user's $HOME directory
  88             local homedir = os.getenv("HOME")
  89             -- expand '~'
  90             if homedir then
  91                 for k, v in pairs(theme) do
  92                     if type(v) == "string" then theme[k] = v:gsub("~", homedir) end
  93                 end
  94             end
  95
  96             -- setup wallpaper
  97             if theme.wallpaper_cmd then
  98                 for s = 1, capi.screen.count() do
  99                     util.spawn(theme.wallpaper_cmd[util.cycle(#theme.wallpaper_cmd, s)], false, s)
 100                 end
 101             end
 102             if theme.font then set_font(theme.font) end
 103             if theme.fg_normal then capi.awesome.fg = theme.fg_normal end
 104             if theme.bg_normal then capi.awesome.bg = theme.bg_normal end
 105         else
 106             return print("E: beautiful: error loading theme file " .. path)
 107         end
 108     else
 109         return print("E: beautiful: error loading theme: no path specified")
 110     end
 111 end
 112
 113 --- Get the current theme.
 114 -- @return The current theme table.
 115 function get()
 116     return theme
 117 end
 118
 119 -- Set the default font
 120 set_font("sans 8")
 121
 122 setmetatable(_M, { __index = function(t, k) return theme[k] end })
 123
 124 -- vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=80