664 lines
24 KiB
Lua
664 lines
24 KiB
Lua
local this_package = ... and (...):match("(.-)[^%.]+$") or ""
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local machi_editor = require(this_package.."editor")
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local awful = require("awful")
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local gobject = require("gears.object")
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local capi = {
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screen = screen,
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client = client,
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mouse = mouse,
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}
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local ERROR = 2
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local WARNING = 1
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local INFO = 0
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local DEBUG = -1
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local module = {
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log_level = WARNING,
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global_default_cmd = "w66.",
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allow_shrinking_by_mouse_moving = false,
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}
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local function log(level, msg)
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if level > module.log_level then
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print(msg)
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end
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end
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local function min(a, b)
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if a < b then return a else return b end
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end
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local function max(a, b)
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if a < b then return b else return a end
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end
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local function get_screen(s)
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return s and capi.screen[s]
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end
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awful.mouse.resize.add_enter_callback(
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function (c)
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c.full_width_before_move = c.width + c.border_width * 2
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c.full_height_before_move = c.height + c.border_width * 2
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end, 'mouse.move')
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--- find the best area for the area-like object
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-- @param c area-like object - table with properties x, y, width, and height
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-- @param areas array of area objects
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-- @return the index of the best area
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local function find_area(c, areas)
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local choice = 1
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local choice_value = nil
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local c_area = c.width * c.height
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for i, a in ipairs(areas) do
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if a.habitable then
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local x_cap = max(0, min(c.x + c.width, a.x + a.width) - max(c.x, a.x))
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local y_cap = max(0, min(c.y + c.height, a.y + a.height) - max(c.y, a.y))
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local cap = x_cap * y_cap
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-- -- a cap b / a cup b
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-- local cup = c_area + a.width * a.height - cap
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-- if cup > 0 then
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-- local itx_ratio = cap / cup
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-- if choice_value == nil or choice_value < itx_ratio then
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-- choice_value = itx_ratio
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-- choice = i
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-- end
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-- end
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-- a cap b
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if choice_value == nil or choice_value < cap then
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choice = i
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choice_value = cap
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end
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end
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end
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return choice
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end
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local function distance(x1, y1, x2, y2)
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-- use d1
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return math.abs(x1 - x2) + math.abs(y1 - y2)
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end
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local function find_lu(c, areas, rd)
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local lu = nil
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for i, a in ipairs(areas) do
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if a.habitable then
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if rd == nil or (a.x < areas[rd].x + areas[rd].width and a.y < areas[rd].y + areas[rd].height) then
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if lu == nil or distance(c.x, c.y, a.x, a.y) < distance(c.x, c.y, areas[lu].x, areas[lu].y) then
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lu = i
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end
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end
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end
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end
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return lu
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end
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local function find_rd(c, border_width, areas, lu)
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local x, y
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x = c.x + c.width + (border_width or 0) * 2
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y = c.y + c.height + (border_width or 0) * 2
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local rd = nil
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for i, a in ipairs(areas) do
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if a.habitable then
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if lu == nil or (a.x + a.width > areas[lu].x and a.y + a.height > areas[lu].y) then
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if rd == nil or distance(x, y, a.x + a.width, a.y + a.height) < distance(x, y, areas[rd].x + areas[rd].width, areas[rd].y + areas[rd].height) then
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rd = i
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end
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end
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end
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end
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return rd
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end
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function module.set_geometry(c, area_lu, area_rd, useless_gap, border_width)
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-- We try to negate the gap of outer layer
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if area_lu ~= nil then
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c.x = area_lu.x - useless_gap
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c.y = area_lu.y - useless_gap
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end
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if area_rd ~= nil then
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c.width = area_rd.x + area_rd.width - c.x + useless_gap - border_width * 2
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c.height = area_rd.y + area_rd.height - c.y + useless_gap - border_width * 2
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end
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end
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local function get_machi_tag_string(tag)
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return tostring(tag.screen.geometry.width) .. "x" .. tostring(tag.screen.geometry.height) .. "+" ..
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tostring(tag.screen.geometry.x) .. "+" .. tostring(tag.screen.geometry.y) .. '+' .. tag.name
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end
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local function sanitize_geometry(geo, parent_area)
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local x = geo.x
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local width = geo.width
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if x + width > parent_area.x + parent_area.width then
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x = parent_area.x + parent_area.width - width
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end
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if x < parent_area.x then
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x = parent_area.x
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end
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if x + width > parent_area.x + parent_area.width then
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width = parent_area.x + parent_area.width - x
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end
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geo.x = x
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geo.width = width
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local y = geo.y
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local height = geo.height
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if y + height > parent_area.y + parent_area.height then
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y = parent_area.y + parent_area.height - height
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end
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if y < parent_area.y then
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y = parent_area.y
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end
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if y + height > parent_area.y + parent_area.height then
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height = parent_area.y + parent_area.height - y
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end
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geo.y = y
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geo.height = height
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end
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function module.create(args_or_name, editor, default_cmd)
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local args
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if type(args_or_name) == "string" then
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args = {
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name = args_or_name
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}
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elseif type(args_or_name) == "function" then
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args = {
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name_func = args_or_name
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}
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elseif type(args_or_name) == "table" then
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args = args_or_name
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else
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return nil
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end
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if args.name == nil and args.name_func == nil then
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local prefix = args.icon_name and (args.icon_name.."-") or ""
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args.name_func = function (tag)
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return prefix..get_machi_tag_string(tag)
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end
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end
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args.editor = args.editor or editor or machi_editor.default_editor
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args.default_cmd = args.default_cmd or default_cmd or global_default_cmd
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args.persistent = args.persistent == nil or args.persistent
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local layout = {}
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local instances = {}
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local function get_instance_info(tag)
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return (args.name_func and args.name_func(tag) or args.name), args.persistent
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end
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local function get_instance_(tag)
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local name, persistent = get_instance_info(tag)
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if instances[name] == nil then
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instances[name] = {
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layout = layout,
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cmd = persistent and args.editor.get_last_cmd(name) or nil,
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areas_cache = {},
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nested_tags = {},
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client_data = setmetatable({}, {__mode="k"}),
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}
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if instances[name].cmd == nil then
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instances[name].cmd = args.default_cmd
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end
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end
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return instances[name]
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end
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local function get_instance_data(screen, tag)
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if screen == nil then return end
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local workarea = screen.workarea
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local instance = get_instance_(tag)
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local cmd = instance.cmd or module.global_default_cmd
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if cmd == nil then return end
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local key = tostring(workarea.width) .. "x" .. tostring(workarea.height) .. "+" .. tostring(workarea.x) .. "+" .. tostring(workarea.y)
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if instance.areas_cache[key] == nil then
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instance.areas_cache[key] = args.editor.run_cmd(cmd, screen, tag)
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if instance.areas_cache[key] == nil then
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return
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end
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end
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return instance.client_data, instance.nested_tags, instance.areas_cache[key], instance, args.new_placement_cb
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end
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local function set_cmd(cmd, tag, keep_instance_data)
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local instance = get_instance_(tag)
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if instance.cmd ~= cmd then
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instance.cmd = cmd
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instance.areas_cache = {}
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for _, tag in pairs(instance.nested_tags) do
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tag:emit_signal("property::layout")
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end
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if not keep_instance_data then
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instance.nested_tags = {}
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instance.client_data = setmetatable({}, {__mode="k"})
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end
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end
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end
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local clean_up
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local tag_data = setmetatable({}, {__mode = "k"})
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clean_up = function (tag)
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local screen = tag.screen
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if not screen then
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-- This could happen when deleting tag.
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return
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end
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local _cd, _nt, _areas, instance, _new_placement_cb = get_instance_data(screen, tag)
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if tag_data[tag].regsitered then
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tag_data[tag].regsitered = false
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tag:disconnect_signal("property::layout", clean_up)
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tag:disconnect_signal("property::selected", clean_up)
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for _, tag in pairs(instance.nested_tags) do
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tag:emit_signal("property::layout")
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end
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end
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end
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clean_up_on_selected_change = function (tag)
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if not tag.selected then clean_up(tag) end
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end
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local function arrange(p)
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local useless_gap = p.useless_gap
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local screen = get_screen(p.screen)
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local wa = screen.workarea -- get the real workarea without the gap (instead of p.workarea)
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local cls = p.clients
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local tag = p.tag or screen.selected_tag
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local cd, nt, areas, instance, new_placement_cb = get_instance_data(screen, tag)
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if not tag_data[tag] then tag_data[tag] = {} end
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if not tag_data[tag].registered then
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tag_data[tag].regsitered = true
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tag:connect_signal("property::layout", clean_up)
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tag:connect_signal("property::selected", clean_up)
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end
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if areas == nil then return end
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local nested_clients = {}
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local function place_client_in_area(c, area)
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if machi_editor.nested_layouts[areas[area].layout] ~= nil then
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local clients = nested_clients[area]
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if clients == nil then clients = {}; nested_clients[area] = clients end
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clients[#clients + 1] = c
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else
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p.geometries[c] = {}
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module.set_geometry(p.geometries[c], areas[area], areas[area], useless_gap, 0)
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end
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end
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-- Make clients calling new_placement_cb appear in the end.
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local j = 0
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for i = 1, #cls do
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cd[cls[i]] = cd[cls[i]] or {}
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if cd[cls[i]].placement then
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j = j + 1
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cls[j], cls[i] = cls[i], cls[j]
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end
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end
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for i, c in ipairs(cls) do
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if c.floating or c.immobilized then
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log(DEBUG, "Ignore client " .. tostring(c))
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else
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local geo = {
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x = c.x,
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y = c.y,
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width = c.width + c.border_width * 2,
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height = c.height + c.border_width * 2,
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}
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if not c.machi_no_sanitize_geometry then
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sanitize_geometry(geo, screen.workarea)
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else
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c.machi_no_sanitize_geometry = nil
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end
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if not cd[c].placement and new_placement_cb then
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cd[c].placement = true
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new_placement_cb(c, instance, areas, geo)
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end
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local in_draft = cd[c].draft
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if cd[c].draft ~= nil then
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in_draft = cd[c].draft
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elseif cd[c].lu then
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in_draft = true
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elseif cd[c].area then
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in_draft = false
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else
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in_draft = nil
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end
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local skip = false
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if in_draft ~= false then
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if cd[c].lu ~= nil and cd[c].rd ~= nil and
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cd[c].lu <= #areas and cd[c].rd <= #areas and
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areas[cd[c].lu].habitable and areas[cd[c].rd].habitable
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then
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if areas[cd[c].lu].x == geo.x and
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areas[cd[c].lu].y == geo.y and
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areas[cd[c].rd].x + areas[cd[c].rd].width == geo.x + geo.width and
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areas[cd[c].rd].y + areas[cd[c].rd].height == geo.y + geo.height
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then
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skip = true
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end
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end
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local lu = nil
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local rd = nil
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if not skip then
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log(DEBUG, "Compute areas for " .. (c.name or ("<untitled:" .. tostring(c) .. ">")))
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lu = find_lu(geo, areas)
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if lu ~= nil then
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geo.x = areas[lu].x
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geo.y = areas[lu].y
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rd = find_rd(geo, 0, areas, lu)
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end
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end
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if lu ~= nil and rd ~= nil then
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if lu == rd and cd[c].lu == nil then
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cd[c].area = lu
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place_client_in_area(c, lu)
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else
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cd[c].lu = lu
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cd[c].rd = rd
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cd[c].area = nil
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p.geometries[c] = {}
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module.set_geometry(p.geometries[c], areas[lu], areas[rd], useless_gap, 0)
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end
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end
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else
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if cd[c].area ~= nil and
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cd[c].area <= #areas and
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areas[cd[c].area].habitable and
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areas[cd[c].area].layout == nil and
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areas[cd[c].area].x == geo.x and
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areas[cd[c].area].y == geo.y and
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areas[cd[c].area].width == geo.width and
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areas[cd[c].area].height == geo.height
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then
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skip = true
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else
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log(DEBUG, "Compute areas for " .. (c.name or ("<untitled:" .. tostring(c) .. ">")))
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local area = find_area(geo, areas)
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cd[c].area, cd[c].lu, cd[c].rd = area, nil, nil
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place_client_in_area(c, area)
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end
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end
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if skip then
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if geo.x ~= c.x or geo.y ~= c.y or
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geo.width ~= c.width + c.border_width * 2 or
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geo.height ~= c.height + c.border_width * 2 then
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p.geometries[c] = {}
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module.set_geometry(p.geometries[c], geo, geo, useless_gap, 0)
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end
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end
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end
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end
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local arranged_area = {}
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local function arrange_nested_layout(area, clients)
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local nested_layout = machi_editor.nested_layouts[areas[area].layout]
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if not nested_layout then return end
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if nt[area] == nil then
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local tag = gobject{}
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nt[area] = tag
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-- TODO: Make the default more flexible.
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tag.layout = nested_layout
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tag.column_count = 1
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tag.master_count = 1
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tag.master_fill_policy = "expand"
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tag.gap = 0
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tag.master_width_factor = 0.5
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tag._private = {
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awful_tag_properties = {
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},
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}
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end
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local nested_params = {
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tag = nt[area],
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screen = p.screen,
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clients = clients,
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padding = 0,
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geometry = {
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x = areas[area].x,
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y = areas[area].y,
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width = areas[area].width,
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height = areas[area].height,
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},
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-- Not sure how useless_gap adjustment works here. It seems to work anyway.
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workarea = {
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x = areas[area].x - useless_gap,
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y = areas[area].y - useless_gap,
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width = areas[area].width + useless_gap * 2,
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height = areas[area].height + useless_gap * 2,
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},
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useless_gap = useless_gap,
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geometries = {},
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}
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nested_layout.arrange(nested_params)
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for _, c in ipairs(clients) do
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p.geometries[c] = {
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x = nested_params.geometries[c].x,
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y = nested_params.geometries[c].y,
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width = nested_params.geometries[c].width,
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height = nested_params.geometries[c].height,
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}
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end
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|
end
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|
for area, clients in pairs(nested_clients) do
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arranged_area[area] = true
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arrange_nested_layout(area, clients)
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end
|
|
-- Also rearrange empty nested layouts.
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|
-- TODO Iterate through only if the area has a nested layout
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for area, data in pairs(areas) do
|
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if not arranged_area[area] and areas[area].layout then
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arrange_nested_layout(area, {})
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end
|
|
end
|
|
end
|
|
|
|
local function resize_handler (c, context, h)
|
|
local tag = c.screen.selected_tag
|
|
local instance = get_instance_(tag)
|
|
local cd = instance.client_data
|
|
local cd, nt, areas, _placement_cb = get_instance_data(c.screen, tag)
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|
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if areas == nil then return end
|
|
|
|
if context == "mouse.move" then
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local in_draft = cd[c].draft
|
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if cd[c].draft ~= nil then
|
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in_draft = cd[c].draft
|
|
elseif cd[c].lu then
|
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in_draft = true
|
|
elseif cd[c].area then
|
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in_draft = false
|
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else
|
|
log(ERROR, "Assuming in_draft for unhandled client "..tostring(c))
|
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in_draft = true
|
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end
|
|
if in_draft then
|
|
local lu = find_lu(h, areas)
|
|
local rd = nil
|
|
if lu ~= nil then
|
|
-- Use the initial width and height since it may change in undesired way.
|
|
local hh = {}
|
|
hh.x = areas[lu].x
|
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hh.y = areas[lu].y
|
|
hh.width = c.full_width_before_move
|
|
hh.height = c.full_height_before_move
|
|
rd = find_rd(hh, 0, areas, lu)
|
|
|
|
if rd ~= nil and not module.allowing_shrinking_by_mouse_moving and
|
|
(areas[rd].x + areas[rd].width - areas[lu].x < c.full_width_before_move or
|
|
areas[rd].y + areas[rd].height - areas[lu].y < c.full_height_before_move) then
|
|
hh.x = areas[rd].x + areas[rd].width - c.full_width_before_move
|
|
hh.y = areas[rd].y + areas[rd].height - c.full_height_before_move
|
|
lu = find_lu(hh, areas, rd)
|
|
end
|
|
|
|
if lu ~= nil and rd ~= nil then
|
|
cd[c].lu = lu
|
|
cd[c].rd = rd
|
|
cd[c].area = nil
|
|
module.set_geometry(c, areas[lu], areas[rd], 0, c.border_width)
|
|
end
|
|
end
|
|
else
|
|
local center_x = h.x + h.width / 2
|
|
local center_y = h.y + h.height / 2
|
|
|
|
local choice = nil
|
|
local choice_value = nil
|
|
|
|
for i, a in ipairs(areas) do
|
|
if a.habitable then
|
|
local ac_x = a.x + a.width / 2
|
|
local ac_y = a.y + a.height / 2
|
|
local dis = (ac_x - center_x) * (ac_x - center_x) + (ac_y - center_y) * (ac_y - center_y)
|
|
if choice_value == nil or choice_value > dis then
|
|
choice = i
|
|
choice_value = dis
|
|
end
|
|
end
|
|
end
|
|
|
|
if choice and cd[c].area ~= choice then
|
|
cd[c].lu = nil
|
|
cd[c].rd = nil
|
|
cd[c].area = choice
|
|
module.set_geometry(c, areas[choice], areas[choice], 0, c.border_width)
|
|
end
|
|
end
|
|
elseif cd[c].draft ~= false then
|
|
local lu = find_lu(h, areas)
|
|
local rd = nil
|
|
if lu ~= nil then
|
|
local hh = {}
|
|
hh.x = h.x
|
|
hh.y = h.y
|
|
hh.width = h.width
|
|
hh.height = h.height
|
|
rd = find_rd(hh, c.border_width, areas, lu)
|
|
end
|
|
|
|
if lu ~= nil and rd ~= nil then
|
|
if lu == rd and cd[c].draft ~= true then
|
|
cd[c].lu = nil
|
|
cd[c].rd = nil
|
|
cd[c].area = lu
|
|
awful.layout.arrange(c.screen)
|
|
else
|
|
cd[c].lu = lu
|
|
cd[c].rd = rd
|
|
cd[c].area = nil
|
|
module.set_geometry(c, areas[lu], areas[rd], 0, c.border_width)
|
|
end
|
|
end
|
|
end
|
|
end
|
|
|
|
layout.name = args.icon_name or "machi"
|
|
layout.arrange = arrange
|
|
layout.resize_handler = resize_handler
|
|
layout.machi_editor = args.editor
|
|
layout.machi_get_instance_info = get_instance_info
|
|
layout.machi_get_instance_data = get_instance_data
|
|
layout.machi_set_cmd = set_cmd
|
|
return layout
|
|
end
|
|
|
|
module.placement = {}
|
|
|
|
local function empty_then_maybe_fair(c, instance, areas, geometry, do_fair)
|
|
local area_client_count = {}
|
|
for _, oc in ipairs(c.screen.tiled_clients) do
|
|
local cd = instance.client_data[oc]
|
|
if cd and cd.placement and cd.area then
|
|
area_client_count[cd.area] = (area_client_count[cd.area] or 0) + 1
|
|
end
|
|
end
|
|
local choice_client_count = nil
|
|
local choice_spare_score = nil
|
|
local choice = nil
|
|
for i = 1, #areas do
|
|
local a = areas[i]
|
|
if a.habitable then
|
|
-- +1 for the new client
|
|
local client_count = (area_client_count[i] or 0) + 1
|
|
local spare_score = a.width * a.height / client_count
|
|
if choice == nil or (choice_client_count > 1 and client_count == 1) then
|
|
choice_client_count = client_count
|
|
choice_spare_score = spare_score
|
|
choice = i
|
|
elseif (choice_client_count > 1) == (client_count > 1) and choice_spare_score < spare_score then
|
|
choice_client_count = client_count
|
|
choice_spare_score = spare_score
|
|
choice = i
|
|
end
|
|
end
|
|
end
|
|
if choice_client_count > 1 and not do_fair then
|
|
return
|
|
end
|
|
instance.client_data[c].lu = nil
|
|
instance.client_data[c].rd = nil
|
|
instance.client_data[c].area = choice
|
|
geometry.x = areas[choice].x
|
|
geometry.y = areas[choice].y
|
|
geometry.width = areas[choice].width
|
|
geometry.height = areas[choice].height
|
|
end
|
|
|
|
function module.placement.empty(c, instance, areas, geometry)
|
|
empty_then_maybe_fair(c, instance, areas, geometry, false)
|
|
end
|
|
|
|
function module.placement.empty_then_fair(c, instance, areas, geometry)
|
|
empty_then_maybe_fair(c, instance, areas, geometry, true)
|
|
end
|
|
|
|
local function patch_awful_layout()
|
|
local old_alayout_move_handler = awful.layout.move_handler
|
|
if old_alayout_move_handler == nil then return end
|
|
-- Mostly the original one but does not swap clients in machi layouts.
|
|
function awful.layout.move_handler(c, context, ...)
|
|
if not c.floating and context == "mouse.move" then
|
|
local s = capi.mouse.screen
|
|
if s.selected_tag and s.selected_tag.layout and
|
|
s.selected_tag.layout.machi_get_instance_data then
|
|
local cd, nt, areas, instance, new_placement_cb = s.selected_tag.layout.machi_get_instance_data(s, s.selected_tag)
|
|
if cd and cd[c] and cd[c].area and areas[cd[c].area].layout then
|
|
-- Falling through in a nested layout.
|
|
else
|
|
if c.screen ~= s then
|
|
c.screen = s
|
|
end
|
|
return
|
|
end
|
|
end
|
|
end
|
|
return old_alayout_move_handler(c, context, ...)
|
|
end
|
|
capi.client.disconnect_signal("request::geometry", old_alayout_move_handler)
|
|
capi.client.connect_signal("request::geometry", awful.layout.move_handler)
|
|
end
|
|
patch_awful_layout()
|
|
|
|
return module
|