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|
----------------------------------------------------------------------------
--- Library for getting xrdb data.
--
-- @author Yauhen Kirylau <yawghen@gmail.com>
-- @copyright 2015 Yauhen Kirylau
-- @module beautiful.xresources
----------------------------------------------------------------------------
-- Grab environment
local awesome = awesome
local screen = screen
local round = require("awful.util").round
local gears_debug = require("gears.debug")
local xresources = {}
local fallback = {
--black
color0 = '#000000',
color8 = '#465457',
--red
color1 = '#cb1578',
color9 = '#dc5e86',
--green
color2 = '#8ecb15',
color10 = '#9edc60',
--yellow
color3 = '#cb9a15',
color11 = '#dcb65e',
--blue
color4 = '#6f15cb',
color12 = '#7e5edc',
--purple
color5 = '#cb15c9',
color13 = '#b75edc',
--cyan
color6 = '#15b4cb',
color14 = '#5edcb4',
--white
color7 = '#888a85',
color15 = '#ffffff',
--
background = '#0e0021',
foreground = '#bcbcbc',
}
--- Get current base colorscheme from xrdb.
-- @treturn table Color table with keys 'background', 'foreground' and 'color0'..'color15'
function xresources.get_current_theme()
local keys = { 'background', 'foreground' }
for i=0,15 do table.insert(keys, "color"..i) end
local colors = {}
for _, key in ipairs(keys) do
colors[key] = awesome.xrdb_get_value("", key)
if not colors[key] then
gears_debug.print_warning("beautiful: can't get colorscheme from xrdb (using fallback).")
return fallback
end
if colors[key]:find("rgb:") then
colors[key] = "#"..colors[key]:gsub("[a]?rgb:", ""):gsub("/", "")
end
end
return colors
end
local dpi_per_screen = {}
local function get_screen(s)
return s and screen[s]
end
--- Get global or per-screen DPI value falling back to xrdb.
-- @tparam[opt] integer|screen s The screen.
-- @treturn number DPI value.
function xresources.get_dpi(s)
s = get_screen(s)
if dpi_per_screen[s] then
return dpi_per_screen[s]
end
if not xresources.dpi then
-- Might not be present when run under unit tests
if awesome and awesome.xrdb_get_value then
xresources.dpi = tonumber(awesome.xrdb_get_value("", "Xft.dpi"))
end
if not xresources.dpi then
xresources.dpi = 96
end
end
return xresources.dpi
end
--- Set DPI for a given screen (defaults to global).
-- @tparam number dpi DPI value.
-- @tparam[opt] integer s Screen.
function xresources.set_dpi(dpi, s)
s = get_screen(s)
if not s then
xresources.dpi = dpi
else
dpi_per_screen[s] = dpi
end
end
--- Compute resulting size applying current DPI value (optionally per screen).
-- @tparam number size Size
-- @tparam[opt] integer|screen s The screen.
-- @treturn integer Resulting size (rounded to integer).
function xresources.apply_dpi(size, s)
return round(size / 96 * xresources.get_dpi(s))
end
return xresources
-- vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
|
