simple-awesome/tiling.lua

-- Offers window tiling functionnality

local awful = require("awful")

-- Check if geometries are the same
local isTiled = function(c, geometry)
    return c.height == geometry.height and c.x == geometry.x and c.y == geometry.y
end

-- Tile a window to the left
local tileToLeft = function(c)
    local apply = awful.placement.scale
        + awful.placement.left
        + awful.placement['maximize_vertically']
    return apply(c, {honor_workarea=true, to_percent = 0.5})
end

-- Tile a window to the right
local tileToRight = function(c)
    local apply = awful.placement.scale
        + awful.placement.right
        + awful.placement['maximize_vertically']
    return apply(c, {honor_workarea=true, to_percent = 0.5})
end

return {
    key = {
        tileRight = function (c)
            local initialGeometry = {
                x = c.x,
                y = c.y,
                width = c.width,
                height = c.height
            }
            local newGeometry = tileToRight(c, c.screen)
            if isTiled(initialGeometry, newGeometry) then
                local newScreen = c.screen.get_next_in_direction(c.screen, "right")
                if newScreen ~= nil then
                    c.screen = newScreen
                    tileToLeft(c)
                end
            end
        end,
        tileLeft = function (c)
            local initialGeometry = {
                x = c.x,
                y = c.y,
                width = c.width,
                height = c.height
            }
            local newGeometry = tileToLeft(c, c.screen)
            if isTiled(initialGeometry, newGeometry) then
                local newScreen = c.screen.get_next_in_direction(c.screen, "left")
                if newScreen ~= nil then
                    c.screen = newScreen
                    tileToRight(c)
                end
            end
        end,
        maximize = function (c)
            local axis = 'vertically'
            local f = awful.placement.scale
                + (axis and awful.placement['maximize'] or nil)
            c.geometry = f(c.focus, {honor_workarea=true, to_percent = 0.5})
            c.position = "maximized"
        end
    }
}