awesome/lib/awful/widget/layout/horizontal.lua.in

159 lines
4.4 KiB
Lua

-------------------------------------------------
-- @author Gregor Best <farhaven@googlemail.com>
-- @copyright 2009 Gregor Best
-- @release @AWESOME_VERSION@
-------------------------------------------------
-- Grab environment
local ipairs = ipairs
local type = type
local table = table
local math = math
local util = require("awful.util")
local default = require("awful.widget.layout.default")
--- Horizontal widget layout
module("awful.widget.layout.horizontal")
local function horizontal(direction, bounds, widgets, screen)
local geometries = { }
local x = 0
-- we are only interested in tables and widgets
local keys = util.table.keys_filter(widgets, "table", "widget")
for _, k in ipairs(keys) do
local v = widgets[k]
if type(v) == "table" then
local layout = v.layout or default
local g = layout(bounds, v, screen)
for _, v in ipairs(g) do
v.x = v.x + x
table.insert(geometries, v)
end
bounds = g.free
x = x + g.free.x
elseif type(v) == "widget" then
local g
if v.visible then
g = v:extents(screen)
else
g = {
width = 0,
height = 0,
}
end
g.ratio = 1
if g.height > 0 then
g.ratio = g.width / g.height
end
if g.width > bounds.width then
g.width = bounds.width
end
g.height = bounds.height
g.y = 0
if v.resize and g.width > 0 then
g.width = math.floor(g.height * g.ratio)
end
if direction == "leftright" then
g.x = x
x = x + g.width
else
g.x = x + bounds.width - g.width
end
bounds.width = bounds.width - g.width
table.insert(geometries, g)
end
end
geometries.free = util.table.clone(bounds)
geometries.free.x = x
geometries.free.y = 0
return geometries
end
function flex(bounds, widgets, screen)
local geometries = {
free = util.table.clone(bounds)
}
-- the flex layout always uses the complete available place, thus we return
-- no usable free area
geometries.free.width = 0
-- we are only interested in tables and widgets
local keys = util.table.keys_filter(widgets, "table", "widget")
local nelements = 0
for _, k in ipairs(keys) do
local v = widgets[k]
if type(v) == "table" then
nelements = nelements + 1
elseif type(v) == "widget" then
local g = v:extents()
if v.resize and g.width > 0 and g.height > 0 then
bounds.width = bounds.width - bounds.height
elseif g.width > 0 and g.height > 0 then
nelements = nelements + 1
end
end
end
nelements = (nelements == 0) and 1 or nelements
local x = 0
local width = bounds.width / nelements
for _, k in ipairs(util.table.keys(widgets)) do
local v = widgets[k]
if type(v) == "table" then
local layout = v.layout or default
local g = layout(bounds, v, screen)
for _, v in ipairs(g) do
v.x = v.x + x
table.insert(geometries, v)
end
bounds = g.free
elseif type(v) == "widget" then
local g = v:extents(screen)
g.resize = v.resize
if v.resize and g.width > 0 and g.height > 0 then
g.width = bounds.height
g.height = bounds.height
g.x = x
g.y = bounds.y
x = x + g.width
elseif g.width > 0 and g.height > 0 then
g.x = x
g.y = bounds.y
g.width = math.floor(width + 0.5)
g.height = bounds.height
x = x + width
else
g.x = 0
g.y = 0
g.width = 0
g.height = 0
end
table.insert(geometries, g)
end
end
return geometries
end
function leftright(...)
return horizontal("leftright", ...)
end
function rightleft(...)
return horizontal("rightleft", ...)
end
-- vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=80