277 lines
7.1 KiB
Lua
277 lines
7.1 KiB
Lua
local gears_obj = require("gears.object")
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local gears_tab = require("gears.table")
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local grect = require("gears.geometry").rectangle
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local screen, meta = awesome._shim_fake_class()
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screen._count, screen._deleted = 0, {}
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local function get_drawin_screen(s, d)
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return grect.area_intersect_area (s.geometry, {
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x = d:geometry().x,
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y = d:geometry().y,
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width = 1,
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height = 1
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})
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end
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local function compute_workarea(s)
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local struts = {top=0,bottom=0,left=0,right=0}
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for _, c in ipairs(drawin.get()) do
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if get_drawin_screen(s, c) then
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for k,v in pairs(struts) do
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struts[k] = v + (c:struts()[k] or 0)
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end
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end
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end
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for _, c in ipairs(client.get()) do
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if c.screen == s then
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for k,v in pairs(struts) do
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struts[k] = v + (c:struts()[k] or 0)
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end
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end
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end
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return {
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x = s.geometry.x + struts.left,
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y = s.geometry.y + struts.top ,
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width = s.geometry.width - struts.left - struts.right ,
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height = s.geometry.height - struts.top - struts.bottom,
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}
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end
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local function create_screen(args)
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local s = gears_obj()
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awesome._forward_class(s, screen)
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s._private = {}
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s.valid = true
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-- Deprecated.
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s.data = s._private
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-- Copy the geo in case the args are mutated
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local geo = {
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x = args.x ,
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y = args.y ,
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width = args.width ,
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height = args.height,
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}
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function s._resize(args2)
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local old = gears_tab.clone(s.geometry)
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geo.x = args2.x or geo.x
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geo.y = args2.y or geo.y
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geo.width = args2.width or geo.width
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geo.height = args2.height or geo.height
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s:emit_signal("property::geometry", old)
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end
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function s.fake_resize(self, x, y, width, height)
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self._resize {
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x=x,y=y,width=width,height=height
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}
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end
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function s:fake_remove()
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local i = s.index
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table.remove(screen, i)
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screen._deleted[s] = true
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s:emit_signal("removed")
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screen[screen[i]] = nil
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s.valid = false
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end
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function s:swap(other_s)
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local s1geo = gears_tab.clone(s.geometry)
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local s2geo = gears_tab.clone(other_s.geometry)
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s:fake_resize(
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s2geo.x, s2geo.y, s2geo.width, s2geo.height
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)
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other_s:fake_resize(
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s1geo.x, s1geo.y, s1geo.width, s1geo.height
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)
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s:emit_signal("swapped",other_s)
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other_s:emit_signal("swapped",s)
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end
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s.outputs = { LVDS1 ={
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name = "LVDS1",
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mm_width = (geo.width /96)*25.4,
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mm_height = (geo.height/96)*25.4,
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}}
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local wa = args.workarea_sides or 10
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return setmetatable(s,{ __index = function(_, key)
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assert(s.valid)
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if key == "geometry" then
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return {
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x = geo.x or 0,
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y = geo.y or 0,
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width = geo.width ,
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height = geo.height,
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}
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elseif key == "workarea" then
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if screen._track_workarea then
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return compute_workarea(s)
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else
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return {
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x = (geo.x or 0) + wa ,
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y = (geo.y or 0) + wa ,
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width = geo.width - 2*wa,
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height = geo.height - 2*wa,
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}
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end
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else
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return meta.__index(_, key)
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end
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end,
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__newindex = function(...) assert(s.valid); return meta.__newindex(...) end
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})
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end
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local screens = {}
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function screen._add_screen(args)
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local s = create_screen(args)
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table.insert(screens, s)
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-- Skip the metatable or it will have side effects
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rawset(s, "index", #screens)
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screen[#screen+1] = s
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screen[s] = s
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screen._count = screen._count + 1
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return s
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end
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function screen._get_extents()
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local xmax, ymax
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for v in screen do
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if not xmax or v.geometry.x+v.geometry.width > xmax.geometry.x+xmax.geometry.width then
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xmax = v
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end
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if not ymax or v.geometry.y+v.geometry.height > ymax.geometry.y+ymax.geometry.height then
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ymax = v
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end
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end
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return xmax.geometry.x+xmax.geometry.width, ymax.geometry.y+ymax.geometry.height
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end
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-- The way the `screen` module is used to store both number and object is
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-- problematic since it can cause invalid screens to be "resurrected".
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local function catch_invalid(_, s)
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-- The CAPI implementation allows `nil`
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if s == nil then return end
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-- Try to get the screens by output name.
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if type(s) == "string" then
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for s2 in screen do
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for out in pairs(s2.outputs or {}) do
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if out == s then
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return s2
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end
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end
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end
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end
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assert(screen ~= s, "Some code tried (and failed) to shadow the global `screen`")
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-- Valid numbers wont get this far.
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assert(type(s) == "table", "Expected a table, but got a "..type(s))
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if type(s) == "number" then return end
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assert(s.geometry, "The object is not a screen")
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assert(s.outputs, "The object is not a screen")
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assert((not screen._deleted[s]) or (not s.valid), "The shims are broken")
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assert(not screen._deleted[s], "The screen "..tostring(s).."has been deleted")
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-- Other errors. If someone place an object in the `screen` module, it wont
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-- get this far. So the remaining cases are probably bugs.
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assert(false)
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end
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function screen._clear()
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assert(#screen == screen._count)
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for i=1, #screen do
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screen._deleted[screen[i]] = true
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screen[i].valid = false
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screen[screen[i]] = nil
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screen[i] = nil
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end
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screens = {}
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if mouse then
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mouse.screen = nil
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end
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screen._count = 0
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end
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function screen._setup_grid(w, h, rows, args)
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args = args or {}
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screen._clear()
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for i, row in ipairs(rows) do
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for j=1, row do
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args.x = (j-1)*w + (j-1)*screen._grid_horizontal_margin
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args.y = (i-1)*h + (i-1)*screen._grid_vertical_margin
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args.width = w
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args.height = h
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screen._add_screen(args)
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end
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end
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end
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local function iter_scr(_, _, s)
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if not s then
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assert(screen[1])
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return screen[1], 1
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end
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local i = s.index
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if i < #screen then
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return screen[i+1], i+1
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end
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end
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function screen._viewports()
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return {}
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end
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function screen.fake_add(x,y,width,height)
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return screen._add_screen {
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x=x,y=y,width=width,height=height
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}
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end
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screen._add_screen {width=320, height=240}
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screen._grid_vertical_margin = 10
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screen._grid_horizontal_margin = 10
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screen.primary = screen[1]
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screen._track_workarea = false
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function screen.count()
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return screen._count
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end
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return setmetatable(screen, {
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__call = iter_scr,
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__index = catch_invalid
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})
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-- vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
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