awesome/lib/gears/surface.lua.in

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---------------------------------------------------------------------------
-- @author Uli Schlachter
-- @copyright 2012 Uli Schlachter
-- @release @AWESOME_VERSION@
---------------------------------------------------------------------------
local setmetatable = setmetatable
local type = type
local capi = { awesome = awesome }
local cairo = require("lgi").cairo
module("gears.surface")
--- Try to convert the argument into an lgi cairo surface.
-- This is usually needed for loading images by file name.
function load(surface)
-- Nil is not changed
if not surface then
return nil
end
-- lgi cairo surfaces don't get changed either
if cairo.Surface:is_type_of(surface) then
return surface
end
-- Strings are assumed to be file names and get loaded
if type(surface) == "string" then
surface = capi.awesome.load_image(surface)
end
-- Everything else gets forced into a surface
return cairo.Surface(surface, true)
end
setmetatable(_M, { __call = function(_, ...) return load(...) end })
-- vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80