149 lines
4.1 KiB
Lua
149 lines
4.1 KiB
Lua
----------------------------------------------------------------------------
|
|
--- Theme library.
|
|
--
|
|
-- @author Damien Leone <damien.leone@gmail.com>
|
|
-- @author Julien Danjou <julien@danjou.info>
|
|
-- @copyright 2008-2009 Damien Leone, Julien Danjou
|
|
-- @release @AWESOME_VERSION@
|
|
-- @module beautiful
|
|
----------------------------------------------------------------------------
|
|
|
|
-- Grab environment
|
|
local os = os
|
|
local print = print
|
|
local pcall = pcall
|
|
local pairs = pairs
|
|
local type = type
|
|
local dofile = dofile
|
|
local setmetatable = setmetatable
|
|
local util = require("awful.util")
|
|
local lgi = require("lgi")
|
|
local cairo = lgi.cairo
|
|
local Pango = lgi.Pango
|
|
local PangoCairo = lgi.PangoCairo
|
|
local capi =
|
|
{
|
|
screen = screen,
|
|
awesome = awesome
|
|
}
|
|
|
|
local xresources = require("beautiful.xresources")
|
|
|
|
local beautiful = { xresources = xresources, mt = {} }
|
|
|
|
-- Local data
|
|
local theme = {}
|
|
local descs = setmetatable({}, { __mode = 'k' })
|
|
local fonts = setmetatable({}, { __mode = 'v' })
|
|
local active_font
|
|
|
|
--- Load a font name
|
|
--
|
|
-- @param name Font name, which can be a string or a table
|
|
local function load_font(name)
|
|
name = name or active_font
|
|
if name and type(name) ~= "string" and descs[name] then
|
|
name = descs[name]
|
|
end
|
|
if fonts[name] then
|
|
return fonts[name]
|
|
end
|
|
|
|
-- Load new font
|
|
local desc = Pango.FontDescription.from_string(name)
|
|
local ctx = PangoCairo.font_map_get_default():create_context()
|
|
ctx:set_resolution(beautiful.xresources.get_dpi())
|
|
|
|
-- Apply default values from the context (e.g. a default font size)
|
|
desc:merge(ctx:get_font_description(), false)
|
|
|
|
-- Calculate font height.
|
|
local metrics = ctx:get_metrics(desc, nil)
|
|
local height = math.ceil((metrics:get_ascent() + metrics:get_descent()) / Pango.SCALE)
|
|
|
|
local font = { name = name, description = desc, height = height }
|
|
fonts[name] = font
|
|
descs[desc] = name
|
|
return font
|
|
end
|
|
|
|
--- Set an active font
|
|
--
|
|
-- @param name The font
|
|
local function set_font(name)
|
|
active_font = load_font(name).name
|
|
end
|
|
|
|
--- Get a font description
|
|
--
|
|
-- @param name The name of the font
|
|
function beautiful.get_font(name)
|
|
return load_font(name).description
|
|
end
|
|
|
|
--- Get the heigh of a font
|
|
--
|
|
-- @param name Name of the font
|
|
function beautiful.get_font_height(name)
|
|
return load_font(name).height
|
|
end
|
|
|
|
--- Init function, should be runned at the beginning of configuration file.
|
|
-- @tparam string|table config The theme to load. It can be either the path to
|
|
-- the theme file (returning a table) or directly the table
|
|
-- containing all the theme values.
|
|
function beautiful.init(config)
|
|
if config then
|
|
local success
|
|
local homedir = os.getenv("HOME")
|
|
|
|
-- If config is the path to the theme file,
|
|
-- run this file,
|
|
-- else if it is the theme table, save it
|
|
if type(config) == 'string' then
|
|
-- Expand the '~' $HOME shortcut
|
|
config = config:gsub("^~/", homedir .. "/")
|
|
success, theme = xpcall(function() return dofile(config) end,
|
|
debug.traceback)
|
|
elseif type(config) == 'table' then
|
|
success = true
|
|
theme = config
|
|
end
|
|
|
|
if not success then
|
|
return print("E: beautiful: error loading theme file " .. theme)
|
|
elseif theme then
|
|
-- expand '~'
|
|
if homedir then
|
|
for k, v in pairs(theme) do
|
|
if type(v) == "string" then theme[k] = v:gsub("^~/", homedir .. "/") end
|
|
end
|
|
end
|
|
|
|
if theme.font then set_font(theme.font) end
|
|
else
|
|
return print("E: beautiful: error loading theme file " .. config)
|
|
end
|
|
else
|
|
return print("E: beautiful: error loading theme: no theme specified")
|
|
end
|
|
end
|
|
|
|
--- Get the current theme.
|
|
--
|
|
-- @treturn table The current theme table.
|
|
function beautiful.get()
|
|
return theme
|
|
end
|
|
|
|
function beautiful.mt:__index(k)
|
|
return theme[k]
|
|
end
|
|
|
|
-- Set the default font
|
|
set_font("sans 8")
|
|
|
|
return setmetatable(beautiful, beautiful.mt)
|
|
|
|
-- vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
|