awesome/lib/awful/layout/suit/floating.lua

---------------------------------------------------------------------------
--- Dummy function for floating layout
--
-- @author Gregor Best
-- @copyright 2008 Gregor Best
-- @module awful.layout
---------------------------------------------------------------------------

-- Grab environment we need
local ipairs = ipairs
local capi =
{
    mouse = mouse,
    mousegrabber = mousegrabber
}

--- The floating layout layoutbox icon.
-- @beautiful beautiful.layout_floating
-- @param surface
-- @see gears.surface

local floating = {}

--- Jump mouse cursor to the client's corner when resizing it.
-- @field awful.layout.suit.floating.resize_jump_to_corner
floating.resize_jump_to_corner = true

function floating.mouse_resize_handler(c, corner, x, y)
    local g = c:geometry()

    -- Do not allow maximized clients to be resized by mouse
    local fixed_x = c.maximized_horizontal
    local fixed_y = c.maximized_vertical

    local prev_coords = {}
    local coordinates_delta = {x=0, y=0}

    if floating.resize_jump_to_corner then
      -- Warp mouse pointer
      capi.mouse.coords({ x = x, y = y })
    else
      local corner_x, corner_y = x, y
      local mouse_coords = capi.mouse.coords()

      x = mouse_coords.x
      y = mouse_coords.y
      coordinates_delta = {x = corner_x-x,y = corner_y-y}
    end

    capi.mousegrabber.run(function (state)
        if not c.valid then return false end

        state.x = state.x + coordinates_delta.x
        state.y = state.y + coordinates_delta.y

        for _, v in ipairs(state.buttons) do
            if v then
                local ng

                prev_coords = { x = state.x, y = state.y }

                if corner == "bottom_right" then
                    ng = { width = state.x - g.x,
                            height = state.y - g.y }
                elseif corner == "bottom_left" then
                    ng = { x = state.x,
                            width = (g.x + g.width) - state.x,
                            height = state.y - g.y }
                elseif corner == "top_left" then
                    ng = { x = state.x,
                            width = (g.x + g.width) - state.x,
                            y = state.y,
                            height = (g.y + g.height) - state.y }
                else
                    ng = { width = state.x - g.x,
                            y = state.y,
                            height = (g.y + g.height) - state.y }
                end

                if ng.width <= 0 then ng.width = nil end
                if ng.height <= 0 then ng.height = nil end
                if fixed_x then ng.width = g.width ng.x = g.x end
                if fixed_y then ng.height = g.height ng.y = g.y end

                c:geometry(ng)
                -- Get real geometry that has been applied
                -- in case we honor size hints
                -- XXX: This should be rewritten when size
                -- hints are available from Lua.
                local rg = c:geometry()

                if corner == "bottom_right" then
                    ng = {}
                elseif corner == "bottom_left" then
                    ng = { x = (g.x + g.width) - rg.width  }
                elseif corner == "top_left" then
                    ng = { x = (g.x + g.width) - rg.width,
                            y = (g.y + g.height) - rg.height }
                else
                    ng = { y = (g.y + g.height) - rg.height }
                end

                c:geometry({ x = ng.x, y = ng.y })
                return true
            end
        end

        return prev_coords.x == state.x and prev_coords.y == state.y
    end, corner .. "_corner")
end

function floating.arrange()
end

--- The floating layout.
-- @clientlayout awful.layout.suit.floating
-- @usebeautiful beautiful.layout_floating

floating.name = "floating"

return floating

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