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899 lines (805 loc) · 25 KB
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---------------------------------------------------------------------------
-- @author Julien Danjou <julien@danjou.info>
-- @copyright 2008 Julien Danjou
-- @release @AWESOME_VERSION@
---------------------------------------------------------------------------
-- Grab environment we need
local util = require("awful.util")
local tag = require("awful.tag")
local pairs = pairs
local type = type
local ipairs = ipairs
local table = table
local math = math
local setmetatable = setmetatable
local capi =
{
client = client,
mouse = mouse,
screen = screen,
}
--- Useful client manipulation functions.
module("awful.client")
-- Private data
data = {}
data.focus = {}
data.urgent = {}
data.marked = {}
data.properties = setmetatable({}, { __mode = 'k' })
-- Functions
urgent = {}
focus = {}
focus.history = {}
swap = {}
floating = {}
dockable = {}
property = {}
--- Get the first client that got the urgent hint.
-- @return The first urgent client.
function urgent.get()
if #data.urgent > 0 then
return data.urgent[1]
else
-- fallback behaviour: iterate through clients and get the first urgent
local clients = capi.client.get()
for k, cl in pairs(clients) do
if cl.urgent then
return cl
end
end
end
end
--- Jump to the client that received the urgent hint first.
-- @param merge If true then merge tags when clients are not visible.
function urgent.jumpto(merge)
local c = urgent.get()
if c then
local s = capi.client.focus and capi.client.focus.screen or capi.mouse.screen
-- focus the screen
if s ~= c.screen then
capi.mouse.screen = c.screen
end
-- Try to make client visible, this also covers e.g. sticky
local t = c:tags()[1]
if t and not c:isvisible() then
if merge then
t.selected = true
else
tag.viewonly(t)
end
end
-- focus the client
capi.client.focus = c
c:raise()
end
end
--- Adds client to urgent stack.
-- @param c The client object.
-- @param prop The property which is updated.
function urgent.add(c, prop)
if type(c) == "client" and prop == "urgent" and c.urgent then
table.insert(data.urgent, c)
end
end
--- Remove client from urgent stack.
-- @param c The client object.
function urgent.delete(c)
for k, cl in ipairs(data.urgent) do
if c == cl then
table.remove(data.urgent, k)
break
end
end
end
--- Remove a client from the focus history
-- @param c The client that must be removed.
function focus.history.delete(c)
for k, v in ipairs(data.focus) do
if v == c then
table.remove(data.focus, k)
break
end
end
end
--- Filter out window that we do not want handled by focus.
-- This usually means that desktop, dock and splash windows are
-- not registered and cannot get focus.
-- @param c A client.
-- @return The same client if it's ok, nil otherwise.
function focus.filter(c)
if c.type == "desktop"
or c.type == "dock"
or c.type == "splash"
or not c.focusable then
return nil
end
return c
end
--- Update client focus history.
-- @param c The client that has been focused.
function focus.history.add(c)
if focus.filter(c) then
-- Remove the client if its in stack
focus.history.delete(c)
-- Record the client has latest focused
table.insert(data.focus, 1, c)
end
end
--- Get the latest focused client for a screen in history.
-- @param screen The screen number to look for.
-- @param idx The index: 0 will return first candidate,
-- 1 will return second, etc.
-- @return A client.
function focus.history.get(screen, idx)
-- When this counter is equal to idx, we return the client
local counter = 0
local vc = visible(screen)
for k, c in ipairs(data.focus) do
if c.screen == screen then
for j, vcc in ipairs(vc) do
if vcc == c then
if counter == idx then
return c
end
-- We found one, increment the counter only.
counter = counter + 1
break
end
end
end
end
-- Argh nobody found in history, give the first one visible if there is one
-- that passes the filter.
if counter == 0 then
for k, v in ipairs(vc) do
if focus.filter(v) then
return v
end
end
end
end
--- Focus the previous client in history.
function focus.history.previous()
local sel = capi.client.focus
local s
if sel then
s = sel.screen
else
s = capi.mouse.screen
end
local c = focus.history.get(s, 1)
if c then capi.client.focus = c end
end
--- Get visible clients from a screen.
-- @param screen The screen number, or nil for all screens.
-- @return A table with all visible clients.
function visible(screen)
local cls = capi.client.get(screen)
local vcls = {}
for k, c in pairs(cls) do
if c:isvisible() then
table.insert(vcls, c)
end
end
return vcls
end
--- Get visible and tiled clients
-- @param screen The screen number, or nil for all screens.
-- @return A tabl with all visible and tiled clients.
function tiled(screen)
local clients = visible(screen)
local tclients = {}
-- Remove floating clients
for k, c in pairs(clients) do
if not floating.get(c) then
table.insert(tclients, c)
end
end
return tclients
end
--- Get a client by its relative index to the focused window.
-- @usage Set i to 1 to get next, -1 to get previous.
-- @param i The index.
-- @param c Optional client.
-- @return A client, or nil if no client is available.
function next(i, c)
-- Get currently focused client
local sel = c or capi.client.focus
if sel then
-- Get all visible clients
local cls = visible(sel.screen)
local fcls = {}
-- Remove all non-normal clients
for idx, c in ipairs(cls) do
if focus.filter(c) or c == sel then
table.insert(fcls, c)
end
end
cls = fcls
-- Loop upon each client
for idx, c in ipairs(cls) do
if c == sel then
-- Cycle
return cls[util.cycle(#cls, idx + i)]
end
end
end
end
-- Return true whether client B is in the right direction
-- compared to client A.
-- @param dir The direction.
-- @param cA The first client.
-- @param cB The second client.
-- @return True if B is in the direction of A.
local function is_in_direction(dir, cA, cB)
local gA = cA:geometry()
local gB = cB:geometry()
if dir == "up" then
return gA.y > gB.y
elseif dir == "down" then
return gA.y < gB.y
elseif dir == "left" then
return gA.x > gB.x
elseif dir == "right" then
return gA.x < gB.x
end
return false
end
-- Calculate distance between two points.
-- i.e: if we want to move to the right, we will take the right border
-- of the currently focused client and the left side of the checked client.
-- This avoid the focus of an upper client when you move to the right in a
-- tilebottom layout with nmaster=2 and 5 clients open, for instance.
-- @param dir The direction.
-- @param cA The first client.
-- @param cB The second client.
-- @return The distance between the clients.
local function calculate_distance(dir, cA, cB)
local gA = cA:geometry()
local gB = cB:geometry()
if dir == "up" then
gB.y = gB.y + gB.height
elseif dir == "down" then
gA.y = gA.y + gA.height
elseif dir == "left" then
gB.x = gB.x + gB.width
elseif dir == "right" then
gA.x = gA.x + gA.width
end
return math.sqrt(math.pow(gB.x - gA.x, 2) + math.pow(gB.y - gA.y, 2))
end
-- Get the nearest client in the given direction.
-- @param dir The direction, can be either "up", "down", "left" or "right".
-- @param c Optional client to get a client relative to. Else focussed is used.
local function get_client_in_direction(dir, c)
local sel = c or capi.client.focus
if sel then
local geometry = sel:geometry()
local dist, dist_min
local target = nil
local cls = visible(sel.screen)
-- We check each client.
for i, c in ipairs(cls) do
-- Check geometry to see if client is located in the right direction.
if is_in_direction(dir, sel, c) then
-- Calculate distance between focused client and checked client.
dist = calculate_distance(dir, sel, c)
-- If distance is shorter then keep the client.
if not target or dist < dist_min then
target = c
dist_min = dist
end
end
end
return target
end
end
--- Focus a client by the given direction.
-- @param dir The direction, can be either "up", "down", "left" or "right".
-- @param c Optional client.
function focus.bydirection(dir, c)
local sel = c or capi.client.focus
if sel then
local target = get_client_in_direction(dir, sel)
-- If we found a client to focus, then do it.
if target then
capi.client.focus = target
end
end
end
--- Focus a client by its relative index.
-- @param i The index.
-- @param c Optional client.
function focus.byidx(i, c)
local target = next(i, c)
if target then
capi.client.focus = target
end
end
--- Swap a client with another client in the given direction
-- @param dir The direction, can be either "up", "down", "left" or "right".
-- @param c Optional client.
function swap.bydirection(dir, c)
local sel = c or capi.client.focus
if sel then
local target = get_client_in_direction(dir, sel)
-- If we found a client to swap with, then go for it
if target then
target:swap(sel)
end
end
end
--- Swap a client by its relative index.
-- @param i The index.
-- @param c Optional client, otherwise focused one is used.
function swap.byidx(i, c)
local sel = c or capi.client.focus
local target = next(i, sel)
if target then
target:swap(sel)
end
end
--- Cycle clients.
-- @param clockwise True to cycle clients clockwise.
-- @param screen Optional screen where to cycle clients.
function cycle(clockwise, screen)
local screen = screen or capi.mouse.screen
local cls = visible(screen)
-- We can't rotate without at least 2 clients, buddy.
if #cls >= 2 then
local c = table.remove(cls, 1)
if clockwise then
for i = #cls, 1, -1 do
c:swap(cls[i])
end
else
for _, rc in pairs(cls) do
c:swap(rc)
end
end
end
end
--- Get the master window.
-- @param screen Optional screen number, otherwise screen mouse is used.
-- @return The master window.
function getmaster(screen)
local s = screen or capi.mouse.screen
return visible(s)[1]
end
--- Set the client as slave: put it at the end of other windows.
-- @param c The window to set as slave.
function setslave(c)
local cls = capi.client.get(c.screen)
for k, v in pairs(cls) do
c:swap(v)
end
end
--- Move/resize a client relative to current coordinates.
-- @param x The relative x coordinate.
-- @param y The relative y coordinate.
-- @param w The relative width.
-- @param h The relative height.
-- @param c The optional client, otherwise focused one is used.
function moveresize(x, y, w, h, c)
local sel = c or capi.client.focus
local geometry = sel:geometry()
geometry['x'] = geometry['x'] + x
geometry['y'] = geometry['y'] + y
geometry['width'] = geometry['width'] + w
geometry['height'] = geometry['height'] + h
sel:geometry(geometry)
end
--- Move a client to a tag.
-- @param target The tag to move the client to.
-- @param c Optional client to move, otherwise the focused one is used.
function movetotag(target, c)
local sel = c or capi.client.focus
if sel and target.screen then
-- Set client on the same screen as the tag.
sel.screen = target.screen
sel:tags({ target })
end
end
--- Toggle a tag on a client.
-- @param target The tag to toggle.
-- @param c Optional client to toggle, otherwise the focused one is used.
function toggletag(target, c)
local sel = c or capi.client.focus
-- Check that tag and client screen are identical
if sel and sel.screen == target.screen then
local tags = sel:tags()
local index = nil;
for i, v in ipairs(tags) do
if v == target then
index = i
break
end
end
if index then
-- If it's the only tag for the window, stop.
if #tags == 1 then return end
tags[index] = nil
else
tags[#tags + 1] = target
end
sel:tags(tags)
end
end
--- Move a client to a screen. Default is next screen, cycling.
-- @param c The client to move.
-- @param s The screen number, default to current + 1.
function movetoscreen(c, s)
local sel = c or capi.client.focus
if sel then
local sc = capi.screen.count()
if not s then
s = sel.screen + 1
end
if s > sc then s = 1 elseif s < 1 then s = sc end
sel.screen = s
capi.mouse.coords(capi.screen[s].geometry)
end
end
--- Mark a client, and then call 'marked' hook.
-- @param c The client to mark, the focused one if not specified.
-- @return True if the client has been marked. False if the client was already marked.
function mark(c)
local cl = c or capi.client.focus
if cl then
for k, v in pairs(data.marked) do
if cl == v then
return false
end
end
table.insert(data.marked, cl)
-- Call callback
cl:emit_signal("marked")
return true
end
end
--- Unmark a client and then call 'unmarked' hook.
-- @param c The client to unmark, or the focused one if not specified.
-- @return True if the client has been unmarked. False if the client was not marked.
function unmark(c)
local cl = c or capi.client.focus
for k, v in pairs(data.marked) do
if cl == v then
table.remove(data.marked, k)
cl:emit_signal("unmarked")
return true
end
end
return false
end
--- Check if a client is marked.
-- @param c The client to check, or the focused one otherwise.
function ismarked(c)
local cl = c or capi.client.focus
if cl then
for k, v in pairs(data.marked) do
if cl == v then
return true
end
end
end
return false
end
--- Toggle a client as marked.
-- @param c The client to toggle mark.
function togglemarked(c)
local cl = c or capi.client.focus
if not mark(c) then
unmark(c)
end
end
--- Return the marked clients and empty the marked table.
-- @return A table with all marked clients.
function getmarked()
for k, v in pairs(data.marked) do
v:emit_signal("unmarked")
end
t = data.marked
data.marked = {}
return t
end
--- Set a client floating state, overriding auto-detection.
-- Floating client are not handled by tiling layouts.
-- @param c A client.
-- @param s True or false.
function floating.set(c, s)
local c = c or capi.client.focus
if c and property.get(c, "floating") ~= s then
property.set(c, "floating", s)
local screen = c.screen
if s == true then
c:geometry(property.get(c, "floating_geometry"))
end
c.screen = screen
end
end
local function store_floating_geometry(c)
if floating.get(c) then
property.set(c, "floating_geometry", c:geometry())
end
end
-- Store the initial client geometry.
capi.client.add_signal("new", function(c)
local function store_init_geometry(c)
property.set(c, "floating_geometry", c:geometry())
c:remove_signal("property::border_width", store_init_geometry)
end
c:add_signal("property::border_width", store_init_geometry)
end)
capi.client.add_signal("manage", function(c)
c:add_signal("property::geometry", store_floating_geometry)
end)
--- Return if a client has a fixe size or not.
-- @param c The client.
function isfixed(c)
local c = c or capi.client.focus
if not c then return end
local h = c.size_hints
if h.min_width and h.max_width
and h.max_height and h.min_height
and h.min_width > 0 and h.max_width > 0
and h.max_height > 0 and h.min_height > 0
and h.min_width == h.max_width
and h.min_height == h.max_height then
return true
end
return false
end
--- Get a client floating state.
-- @param c A client.
-- @return True or false. Note that some windows might be floating even if you
-- did not set them manually. For example, windows with a type different than
-- normal.
function floating.get(c)
local c = c or capi.client.focus
if c then
local value = property.get(c, "floating")
if value ~= nil then
return value
end
if c.type ~= "normal"
or c.fullscreen
or c.maximized_vertical
or c.maximized_horizontal
or isfixed(c) then
return true
end
return false
end
end
--- Toggle the floating state of a client between 'auto' and 'true'.
-- @param c A client.
function floating.toggle(c)
local c = c or capi.client.focus
-- If it has been set to floating
if floating.get(c) then
floating.set(c, false)
else
floating.set(c, true)
end
end
--- Remove the floating information on a client.
-- @param c The client.
function floating.delete(c)
floating.set(c, nil)
end
--- Restore (=unminimize) a random client.
-- @param s The screen to use.
-- @return True if some client was restored.
function restore(s)
local s = s or (capi.client.focus and capi.client.focus.screen) or capi.mouse.screen
local cls = capi.client.get(s)
local tags = tag.selectedlist(s)
local mcls = {}
for k, c in pairs(cls) do
local ctags = c:tags()
if c.minimized then
for k, t in ipairs(tags) do
if util.table.hasitem(ctags, t) then
c.minimized = false
return true
end
end
end
end
return false
end
-- Normalize a set of numbers to 1
-- @param set the set of numbers to normalize
-- @param num the number of numbers to normalize
local function normalize(set, num)
local num = num or #set
local total = 0
if num then
for i = 1,num do
total = total + set[i]
end
for i = 1,num do
set[i] = set[i] / total
end
else
for i,v in ipairs(set) do
total = total + v
end
for i,v in ipairs(set) do
set[i] = v / total
end
end
end
--- Calculate a client's column number, index in that column, and
-- number of visible clients in this column.
-- @param c the client
-- @return col the column number
-- @return idx index of the client in the column
-- @return num the number of visible clients in the column
function idx(c)
local c = c or capi.client.focus
if not c then return end
local clients = tiled(c.screen)
local idx = nil
for k, cl in ipairs(clients) do
if cl == c then
idx = k
break
end
end
local t = tag.selected(c.screen)
local nmaster = tag.getnmaster(t)
if idx <= nmaster then
return {idx = idx, col=0, num=nmaster}
end
local nother = #clients - nmaster
idx = idx - nmaster
-- rather than regenerate the column number we can calculate it
-- based on the how the tiling algorithm places clients we calculate
-- the column, we could easily use the for loop in the program but we can
-- calculate it.
local ncol = tag.getncol(t)
-- minimum number of clients per column
local percol = math.floor(nother / ncol)
-- number of columns with an extra client
local overcol = math.mod(nother, ncol)
-- number of columns filled with [percol] clients
local regcol = ncol - overcol
local col = math.floor( (idx - 1) / percol) + 1
if col > regcol then
-- col = math.floor( (idx - (percol*regcol) - 1) / (percol + 1) ) + regcol + 1
-- simplified
col = math.floor( (idx + regcol + percol) / (percol+1) )
-- calculate the index in the column
idx = idx - percol*regcol - (col - regcol - 1) * (percol+1)
percol = percol+1
else
idx = idx - percol*(col-1)
end
return {idx = idx, col=col, num=percol}
end
--- Set the window factor of a client
-- @param wfact the window factor value
-- @param c the client
function setwfact(wfact, c)
-- get the currently selected window
local c = c or capi.client.focus
if not c or not c:isvisible() then return end
local t = tag.selected(c.screen)
local w = idx(c)
local cls = tiled(t.screen)
local nmaster = tag.getnmaster(t)
-- n is the number of windows currently visible for which we have to be concerned with the properties
local data = tag.getproperty(t, "windowfact") or {}
local colfact = data[w.col]
colfact[w.idx] = wfact
rest = 1-wfact
-- calculate the current denominator
local total = 0
for i = 1,w.num do
if i ~= w.idx then
total = total + colfact[i]
end
end
-- normalize the windows
for i = 1,w.num do
if i ~= w.idx then
colfact[i] = (colfact[i] * rest) / total
end
end
t:emit_signal("property::windowfact")
end
--- Increment a client's window factor
-- @param add amount to increase the client's window
-- @param c the client
function incwfact(add, c)
local c = c or capi.client.focus
if not c then return end
local t = tag.selected(c.screen)
local w = idx(c)
local nmaster = tag.getnmaster(t)
local data = tag.getproperty(t, "windowfact") or {}
local colfact = data[w.col]
curr = colfact[w.idx] or 1
colfact[w.idx] = curr + add
-- keep our ratios normalized
normalize(colfact, w.num)
t:emit_signal("property::windowfact")
end
--- Get a client dockable state.
-- @param c A client.
-- @return True or false. Note that some windows might be dockable even if you
-- did not set them manually. For example, windows with a type "utility", "toolbar"
-- or "dock"
function dockable.get(c)
local value = property.get(c, "dockable")
-- Some sane defaults
if value == nil then
if (c.type == "utility" or c.type == "toolbar" or c.type == "dock") then
value = true
else
value = false
end
end
return value
end
--- Set a client dockable state, overriding auto-detection.
-- With this enabled you can dock windows by moving them from the center
-- to the edge of the workarea.
-- @param c A client.
-- @param value True or false.
function dockable.set(c, value)
property.set(c, "dockable", value)
end
--- Get a client property.
-- @param c The client.
-- @param prop The property name.
-- @return The property.
function property.get(c, prop)
if data.properties[c] then
return data.properties[c][prop]
end
end
--- Set a client property.
-- This properties are internal to awful. Some are used to move clients, etc.
-- @param c The client.
-- @param prop The property name.
-- @param value The value.
function property.set(c, prop, value)
if not data.properties[c] then
data.properties[c] = {}
end
data.properties[c][prop] = value
c:emit_signal("property::" .. prop)
end
---
-- Returns an iterator to cycle through, starting from the client in focus or
-- the given index, all clients that match a given criteria.
-- @param filter a function that returns true to indicate a positive match
-- @param start what index to start iterating from. Defaults to using the
-- index of the currently focused client.
-- @param s which screen to use. nil means all screens.
-- @usage e.g.: un-minimize all urxvt instances
-- <p><code>
-- local urxvt = function (c) <br/>
-- return awful.rules.match(c, {class = "URxvt"}) <br/>
-- end <br/>
-- </br>
-- for c in awful.client.cycle(urxvt) do <br/>
-- c.minimized = false <br/>
-- end <br/>
-- </code></p>
function cycle(filter, start, s)
local clients = capi.client.get(s)
local focused = capi.client.focus
local start = start or util.table.hasitem(clients, focused)
return util.table.cycle(clients, filter, start)
end
-- Register standards signals
capi.client.add_signal("focus", focus.history.add)
capi.client.add_signal("unmanage", focus.history.delete)
capi.client.add_signal("manage", function(c) c:add_signal("property::urgent", urgent.add) end)
capi.client.add_signal("focus", urgent.delete)
capi.client.add_signal("unmanage", urgent.delete)
capi.client.add_signal("unmanage", floating.delete)
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