Module: `client`

A process window.

Clients are the name used by Awesome (and X11) to refer to a window.

A program can have multiple clients (e.g. for dialogs) or none at all (e.g. command line applications). Clients are usually grouped by classes. A class is the name used by X11 to help the window manager distinguish between windows and write rules for them. A client’s behavior is also defined by its type and size_hints properties. See the xprop command line application to query properties for a client.

Client geometry

The client’s :geometry() function returns a table with x, y, width and height. The area returned excludes the border width. All clients also have a shape_bounding and shape_clip used to “crop” the client’s content. Finally, each clients can have titlebars (see awful.titlebar).

Additionally to the classes described here, one can also use signals as described in signals and X properties as described in xproperties.

Some signal names are starting with a dot. These dots are artefacts from the documentation generation, you get the real signal name by removing the starting dot.

Accessing client objects can be done in multiple ways depending on the context. To get the currently focused client:

local c = client.focus
if c then
    -- do something
end

To get a list of all clients, use client:get:

for _, c in ipairs(client.get()) do
    -- do something
end

To execute a callback when a new client is added, use the manage signal:

client.connect_signal("request::manage", function(c)
    -- do something
end)

To be notified when a property of a client changed:

client.connect_signal("property::name", function(c)
    -- do something
end)

To be notified when a property of a specific client c changed:

c:connect_signal("property::name", function()
    -- do something
end)

To get all the clients for a screen use either screen.clients or screen.tiled_clients.

Usage example

Core components relationship

Acquire other objects from a client
Class		Property
tag		c.tags
screen		c.screen
awful.key		c:keys()
awful.button		c:buttons()

Acquire a client from other objects
Class		Property
tag		t:clients()
screen		s.clients
screen		s.hidden_clients
screen		s.tiled_clients
mouse		mouse.current_client

Legend: c: a client object, t: a tag object, s: a screen object, k: an awful.key object, b: a awful.button object, n: a naughty.notification object

Info:

Copyright: 2008-2009 Julien Danjou
Author: Julien Danjou <[email protected]>

Static module functions

client.instances () -> integer	Get the number of instances.
client.get ([screen[, stacked]]) -> table	Get all clients into a table.
client.disconnect_signal (name, func)	Disconnect from a signal.
client.emit_signal (name, ...)	Emit a signal.
client.connect_signal (name, func)	Connect to a signal.
awful.client.next (i[, sel[, stacked=false]]) -> client or nil	Get a client by its relative index to another client.
awful.client.swap.bydirection (dir[, c=focused[, stacked=false]])	Swap a client with another client in the given direction.
awful.client.swap.global_bydirection (dir[, sel])	Swap a client with another client in the given direction.
awful.client.swap.byidx (i[, c])	Swap a client by its relative index.
awful.client.cycle (clockwise[, s[, stacked=false]])	Cycle through the clients to change the focus.
awful.client.restore (s) -> client	Restore (=unminimize) a random client.
awful.client.property.persist (prop, kind)	Set a client property to be persistent across restarts (via X properties).
awful.client.iterate (filter, start, s)	Returns an iterator to cycle through clients.
awful.client.focus.history.disable_tracking () -> int	Disable history tracking.
awful.client.focus.history.enable_tracking () -> boolean	Enable history tracking.
awful.client.focus.history.is_enabled () -> (bool, int)	Is history tracking enabled?

Object properties

window	integer	The X window id.
name	string	The client title.
skip_taskbar	boolean	True if the client does not want to be in taskbar.
type	string	The window type.
class	string	The client class.
instance	string	The client instance.
pid	integer	The client PID, if available.
role	string	The window role, if available.
machine	string	The machine client is running on.
icon_name	string	The client name when iconified.
icon	surface	The client icon as a surface.
icon_sizes	table	The available sizes of client icons.
screen	screen	Client screen.
hidden	boolean	Define if the client must be hidden, i.e.
minimized	boolean	Define it the client must be iconify, i.e.
size_hints_honor	boolean	Honor size hints, e.g.
border_width	integer	The client border width.
border_color	color	The client border color.
urgent	boolean	The client urgent state.
content	surface	A cairo surface for the client window content.
opacity	number	The client opacity.
ontop	boolean	The client is on top of every other windows.
above	boolean	The client is above normal windows.
below	boolean	The client is below normal windows.
fullscreen	boolean	The client is fullscreen or not.
maximized	boolean	The client is maximized (horizontally and vertically) or not.
maximized_horizontal	boolean	The client is maximized horizontally or not.
maximized_vertical	boolean	The client is maximized vertically or not.
transient_for	client	The client the window is transient for.
group_window	integer	Window identification unique to a group of windows.
leader_window	number	Identification unique to windows spawned by the same command.
size_hints	table or nil	A table with size hints of the client.
motif_wm_hints	table	The motif WM hints of the client.
sticky	boolean	Set the client sticky, i.e.
modal	boolean	Indicate if the client is modal.
focusable	boolean	True if the client can receive the input focus.
shape_bounding	surface	The client’s bounding shape as set by awesome as a (native) cairo surface.
shape_clip	surface	The client’s clip shape as set by awesome as a (native) cairo surface.
shape_input	surface	The client’s input shape as set by awesome as a (native) cairo surface.
client_shape_bounding	surface	The client’s bounding shape as set by the program as a (native) cairo surface.
client_shape_clip	surface	The client’s clip shape as set by the program as a (native) cairo surface.
startup_id	string	The FreeDesktop StartId.
valid	boolean	If the client that this object refers to is still managed by awesome.
first_tag	tag	The first tag of the client.
buttons	table	Get or set mouse buttons bindings for a client.
keys	table	Get or set keys bindings for a client.
marked	boolean	If a client is marked or not.
is_fixed	boolean	Return if a client has a fixed size or not.
immobilized_horizontal	boolean	Is the client immobilized horizontally?
immobilized_vertical	boolean	Is the client immobilized vertically?
floating	boolean	The client floating state.
x	integer	The x coordinates.
y	integer	The y coordinates.
width	integer	The width of the client.
height	integer	The height of the client.
dockable	boolean	If the client is dockable.
requests_no_titlebar	boolean	If the client requests not to be decorated with a titlebar.
shape	gears.shape	Set the client shape.
active	boolean	Return true if the client is active (has focus).

Object methods

:struts (struts) -> table	Return client struts (reserved space at the edge of the screen).
:isvisible () -> boolean	Check if a client is visible on its screen.
:kill ()	Kill a client.
:swap (c)	Swap a client with another one in global client list.
:tags (tags_table) -> table	Access or set the client tags.
:raise ()	Raise a client on top of others which are on the same layer.
:lower ()	Lower a client on bottom of others which are on the same layer.
:unmanage ()	Stop managing a client.
:geometry (geo) -> table	Return or set client geometry.
:apply_size_hints (width, height) -> (integer, integer)	Apply size hints to a size.
:get_icon (index) -> surface	Get the client’s n-th icon.
:jump_to (merge)	Jump to the given client.
:append_keybinding (key)	Append a keybinding.
:remove_keybinding (key)	Remove a keybinding.
:append_mousebinding (button)	Append a mousebinding.
:remove_mousebinding (button)	Remove a mousebinding.
:relative_move ([x=c.x[, y=c.y[, w=c.width[, h=c.height]]]])	Move/resize a client relative to current coordinates.
:move_to_tag (target)	Move a client to a tag.
:toggle_tag (target)	Toggle a tag on a client.
:move_to_screen ([s=c.screen.index+1])	Move a client to a screen.
:to_selected_tags ()	Tag a client with the set of current tags.
:get_transient_for_matching (matcher) -> client or nil	Get a matching transient_for client (if any).
:is_transient_for (c2) -> client or nil	Is a client transient for another one?
:activate {[args]}	Activate (focus) a client.
:grant (permission, context)	Grant a permission for a client.
:deny (permission, context)	Deny a permission for a client.
:emit_signal (name, ...)	Emit a signal.	Inherited from gears.object
:connect_signal (name, func)	Connect to a signal.	Inherited from gears.object
:weak_connect_signal (name, func)	Connect to a signal weakly.	Inherited from gears.object

Signals

scanning	AwesomeWM is about to scan for existing clients.
scanned	AwesomeWM is done scanning for clients.
focus	When a client gains focus.
list	Before manage, after unmanage, and when clients swap.
swapped	When 2 clients are swapped
request::manage	When a new client appears and gets managed by Awesome.
request::unmanage	When a client is going away.
button::press	When a mouse button is pressed in a client.
button::release	When a mouse button is released in a client.
mouse::enter	When the mouse enters a client.
mouse::leave	When the mouse leaves a client.
mouse::move	When the mouse moves within a client.
request::activate	When a client should get activated (focused and/or raised).
request::autoactivate	When an event could lead to the client being activated.
request::geometry	When something request a client geometry to be modified.
request::tag	When the tag requests to be moved to a tag or needs a new tag.
request::urgent	When the client requests to become urgent.
request::default_mousebindings	Emitted during startup to gather the default client mousebindings.
request::default_keybindings	Emitted during startup to gather the default client keybindings.
request::default_keybindings	Sent once when AwesomeWM starts to add default keybindings.
tagged	When a client gets tagged.
unfocus	When a client gets unfocused.
untagged	When a client gets untagged.
raised	Emitted when the client is raised within its layer.
lowered	Emitted when the client is lowered within its layer.
property::floating_geometry	The last geometry when client was floating.
request::titlebars	Emited when a client need to get a titlebar.
request::border	Emited when the border client might need to be update.

Deprecated signals

manage [deprecated]	Use request::manage.
unmanage [deprecated]	Use request::unmanage.
marked [deprecated]	The client marked signal.
unmarked [deprecated]	The client unmarked signal.

Theme variables

beautiful.border_color_floating	color	The fallback border color when the client is floating.
beautiful.border_color_mazimized	color	The fallback border color when the client is mazimized.
beautiful.border_color_active	color	The border color when the client is active.
beautiful.border_color_normal	color	The border color when the client is not active.
beautiful.border_color_urgent	color	The border color when the client has the urgent property set.
beautiful.border_color_new	color	The border color when the client is not active and new.
beautiful.border_color_floating_active	color	The border color when the (floating) client is active.
beautiful.border_color_floating_normal	color	The border color when the (floating) client is not active.
beautiful.border_color_floating_urgent	color	The border color when the (floating) client has the urgent property set.
beautiful.border_color_floating_new	color	The border color when the (floating) client is not active and new.
beautiful.border_color_maximized_active	color	The border color when the (maximized) client is active.
beautiful.border_color_maximized_normal	color	The border color when the (maximized) client is not active.
beautiful.border_color_maximized_urgent	color	The border color when the (maximized) client has the urgent property set.
beautiful.border_color_maximized_new	color	The border color when the (maximized) client is not active and new.
beautiful.border_color_fullscreen_active	color	The border color when the (fullscreen) client is active.
beautiful.border_color_fullscreen_normal	color	The border color when the (fullscreen) client is not active.
beautiful.border_color_fullscreen_urgent	color	The border color when the (fullscreen) client has the urgent property set.
beautiful.border_color_fullscreen_new	color	The border color when the (fullscreen) client is not active and new.
beautiful.border_width	integer	The fallback border width when nothing else is set.
beautiful.border_width_floating	integer	The fallback border width when the client is floating.
beautiful.border_width_mazimized	integer	The fallback border width when the client is mazimized.
beautiful.border_width_normal	integer	The client border width for the normal clients.
beautiful.border_width_active	integer	The client border width for the active client.
beautiful.border_width_urgent	integer	The client border width for the urgent clients.
beautiful.border_width_new	integer	The client border width for the new clients.
beautiful.border_width_floating_normal	integer	The client border width for the normal floating clients.
beautiful.border_width_floating_active	integer	The client border width for the active floating client.
beautiful.border_width_floating_urgent	integer	The client border width for the urgent floating clients.
beautiful.border_width_floating_new	integer	The client border width for the new floating clients.
beautiful.border_width_maximized_normal	integer	The client border width for the normal maximized clients.
beautiful.border_width_maximized_active	integer	The client border width for the active maximized client.
beautiful.border_width_maximized_urgent	integer	The client border width for the urgent maximized clients.
beautiful.border_width_maximized_new	integer	The client border width for the new maximized clients.
beautiful.border_width_fullscreen_normal	integer	The client border width for the normal fullscreen clients.
beautiful.border_width_fullscreen_active	integer	The client border width for the active fullscreen client.
beautiful.border_width_fullscreen_urgent	integer	The client border width for the urgent fullscreen clients.
beautiful.border_width_fullscreen_new	integer	The client border width for the new fullscreen clients.
beautiful.opacity_normal	number	The client opacity for the normal clients.
beautiful.opacity_active	number	The client opacity for the active client.
beautiful.opacity_urgent	number	The client opacity for the urgent clients.
beautiful.opacity_new	number	The client opacity for the new clients.
beautiful.opacity_floating_normal	number	The client opacity for the normal floating clients.
beautiful.opacity_floating_active	number	The client opacity for the active floating client.
beautiful.opacity_floating_urgent	number	The client opacity for the urgent floating clients.
beautiful.opacity_floating_new	number	The client opacity for the new floating clients.
beautiful.opacity_maximized_normal	number	The client opacity for the normal maximized clients.
beautiful.opacity_maximized_active	number	The client opacity for the active maximized client.
beautiful.opacity_maximized_urgent	number	The client opacity for the urgent maximized clients.
beautiful.opacity_maximized_new	number	The client opacity for the new maximized clients.
beautiful.opacity_fullscreen_normal	number	The client opacity for the normal fullscreen clients.
beautiful.opacity_fullscreen_active	number	The client opacity for the active fullscreen client.
beautiful.opacity_fullscreen_urgent	number	The client opacity for the urgent fullscreen clients.
beautiful.opacity_fullscreen_new	number	The client opacity for the new fullscreen clients.
beautiful.border_marked	color	The marked clients border color.
beautiful.border_marked	string	The border color when the client is focused.

Deprecated functions

awful.client.jumpto [deprecated]	Jump to the given client.
awful.client.visible [deprecated]	Get visible clients from a screen.
awful.client.tiled [deprecated]	Get visible and tiled clients
awful.client.moveresize [deprecated]	Move/resize a client relative to current coordinates.
awful.client.movetotag [deprecated]	Move a client to a tag.
awful.client.toggletag [deprecated]	Toggle a tag on a client.
awful.client.movetoscreen [deprecated]	Move a client to a screen.
awful.client.mark [deprecated]	Mark a client, and then call ‘marked’ hook.
awful.client.unmark [deprecated]	Unmark a client and then call ‘unmarked’ hook.
awful.client.ismarked [deprecated]	Check if a client is marked.
awful.client.togglemarked [deprecated]	Toggle a client as marked.
awful.client.getmarked [deprecated]	Return the marked clients and empty the marked table.
awful.client.floating.set [deprecated]	Set a client floating state, overriding auto-detection.
awful.client.isfixed [deprecated]	Return if a client has a fixed size or not.
awful.client.floating.get [deprecated]	Get a client floating state.
awful.client.floating.toggle [deprecated]	Toggle the floating state of a client between ‘auto’ and ‘true’.
awful.client.dockable.get [deprecated]	Get a client’s dockable state.
awful.client.dockable.set [deprecated]	Set a client’s dockable state, overriding auto-detection.
awful.client.property.get [deprecated]	Get a client property.
awful.client.property.set [deprecated]	Set a client property.
awful.client.run_or_raise [deprecated]	Switch to a client matching the given condition if running, else spawn it.
awful.client.get_transient_for_matching [deprecated]	Get a matching transient_for client (if any).
awful.client.is_transient_for [deprecated]	Is a client transient for another one?

Layout related functions

awful.client.getmaster	Get the master window.
awful.client.setmaster	Set the client as master: put it at the beginning of other windows.
awful.client.setslave	Set the client as slave: put it at the end of other windows.
awful.client.idx	Calculate a client’s column number, index in that column, and number of visible clients in this column.
awful.client.setwfact	Set the window factor of a client
awful.client.incwfact	Change window factor of a client.

Extra properties available in the rules

placement	N/A	The client default placement on the screen.
honor_padding	boolean	When applying the placement, honor the screen padding.
honor_workarea	boolean	When applying the placement, honor the screen work area.
tag	tag	The client default tag.
tags	table	The client default tags.
new_tag	table or string or boolean	Create a new tag for this client.
switch_to_tags	boolean	Unselect the current tags and select this client tags.
focus	boolean	Define if the client should grab focus by default.
titlebars_enabled	boolean	Should this client have a titlebar by default.
callback	N/A	A function to call when this client is ready.

Tables

awful.client.object

Client class.

Fields

client.focus

client

The focused client or nil (in case there is none).

lib.awful.client.focus Functions

awful.client.focus.history.delete (c)	Remove a client from the focus history
awful.client.focus.byidx (i[, c])	Focus a client by its relative index.
awful.client.focus.filter (c)	Filter out window that we do not want handled by focus.
awful.client.focus.history.add (c)	Update client focus history.
awful.client.focus.history.get (s, idx, filter)	Get the latest focused client for a screen in history.
awful.client.focus.history.previous ()	Focus the previous client in history.
awful.client.focus.bydirection (dir[, c[, stacked=false]])	Focus a client by the given direction.
awful.client.focus.global_bydirection (dir[, c[, stacked=false]])	Focus a client by the given direction.

lib.awful.client.shape Functions

awful.client.shape.get_transformed (c, shape_name)	Get one of a client’s shapes and transform it to include window decorations.
awful.client.shape.update.all (c)	Update all of a client’s shapes from the shapes the client set itself.
awful.client.shape.update.bounding (c)	Update a client’s bounding shape from the shape the client set itself.
awful.client.shape.update.clip (c)	Update a client’s clip shape from the shape the client set itself.

lib.awful.client.urgent Functions

awful.urgent.get ()	Get the first client that got the urgent hint.
awful.urgent.jumpto (merge)	Jump to the client that received the urgent hint first.
awful.urgent.add (c, prop)	Adds client to urgent stack.
awful.urgent.delete (c)	Remove client from urgent stack.

Static module functions

client.instances () -> integer

Get the number of instances.

Returns:

integer

client.get ([screen[, stacked]]) -> table

Get all clients into a table.

Parameters:

screen integer A screen number to filter clients on. (optional)
stacked boolean Return clients in stacking order? (ordered from top to bottom). (optional)

Returns:

table

Usage:

for _, c in client.get() do
    -- do something
end

client.disconnect_signal (name, func)

Disconnect from a signal.

Parameters:

name string The name of the signal.
func function The callback that should be disconnected.

client.emit_signal (name, ...)

Emit a signal.

Parameters:

name string The name of the signal.
... Extra arguments for the callback functions. Each connected function receives the object as first argument and then any extra arguments that are given to emit_signal().

client.connect_signal (name, func)

Connect to a signal.

Parameters:

name string The name of the signal.
func function The callback to call when the signal is emitted.

awful.client.next (i[, sel[, stacked=false]]) -> client or nil

Get a client by its relative index to another client. If no client is passed, the focused client will be used.

Parameters:

i int The index. Use 1 to get the next, -1 to get the previous.
sel client The client. (optional)
stacked boolean Use stacking order? (top to bottom) (default false)

Returns:

client or nil

Usage:

-- focus the next window in the index
awful.client.next(1)
-- focus the previous
awful.client.next(-1)

awful.client.swap.bydirection (dir[, c=focused[, stacked=false]])

Swap a client with another client in the given direction.

Parameters:

dir string The direction, can be either “up”, “down”, “left” or “right”.
c client The client. (default focused)
stacked boolean Use stacking order? (top to bottom) (default false)

Parameters:

dir string The direction, can be either “up”, “down”, “left” or “right”.
sel client The client. (optional)

Requested actions or permissions:

Class	Permission	Context	Default	Description
client	activate	client.swap.global_bydirection	granted	When a client could be activated because awful.client.swap.global_bydirection was called.

awful.client.swap.byidx (i[, c])

Swap a client by its relative index.

Parameters:

i integer The index.
c client The client, otherwise focused one is used. (optional)

Parameters:

clockwise boolean True to cycle clients clockwise.
s screen The screen where to cycle clients. (optional)
stacked boolean Use stacking order? (top to bottom) (default false)

Parameters:

s screen The screen to use.

Returns:

client

awful.client.property.persist (prop, kind)

Set a client property to be persistent across restarts (via X properties).

Parameters:

prop string The property name.
kind string The type (used for register_xproperty). One of “string”, “number” or “boolean”.

awful.client.iterate (filter, start, s)

Returns an iterator to cycle through clients.

Starting from the client in focus or the given index, all clients that match a given criteria.

Parameters:

filter function a function that returns true to indicate a positive match.
start integer what index to start iterating from. Defaults to using the index of the currently focused client.
s screen which screen to use. nil means all screens.

Usage:

-- un-minimize all urxvt instances
local urxvt = function (c)
  return ruled.client.match(c, {class = "URxvt"})
end

for c in awful.client.iterate(urxvt) do
  c.minimized = false
end

awful.client.focus.history.disable_tracking () -> int

Disable history tracking.

See awful.client.focus.history.enable_tracking to enable it again.

Returns:

int

disabled_count

awful.client.focus.history.enable_tracking

awful.client.focus.history.enable_tracking () -> boolean

Enable history tracking.

This is the default, but can be disabled through awful.client.focus.history.disable_tracking.

Returns:

boolean

awful.client.focus.history.is_enabled () -> (bool, int)

Is history tracking enabled?

Returns:

bool True if history tracking is enabled.
int The number of times that tracking has been disabled.

Object properties

window integer · 1 signal

The X window id.

This is rarely useful, but some DBus protocols will have this ID in their API, so it can be useful when writing AwesomeWM bindings for them.

Click to display more

Emit signals:

property::window When the window value changes.

self client The object which changed (useful when connecting many object to the same callback).

name string · 1 signal

The client title.

This is the text which will be shown in awful.widget.tasklist and awful.titlebar.widget.titlewidget.

Emit signals:

property::name When the name value changes.

self client The object which changed (useful when connecting many object to the same callback).

skip_taskbar boolean · 1 signal

True if the client does not want to be in taskbar.

Some clients, like docked bars or some sticky clients such as wallpaper sensors like Conky have no value in the awful.widget.tasklist and should not be shown there.

The default value of this property reflects the value of the _NET_WM_STATE_SKIP_TASKBAR X11 protocol xproperty. Clients can modify this state through this property.

Emit signals:

property::skip_taskbar When the skip_taskbar value changes.

self client The object which changed (useful when connecting many object to the same callback).

type string · 1 signal

The window type.

This is useful in, among other places, the ruled.client rules to apply different properties depending on the client types. It is also used throughout the API to alter the client (and wibox) behavior depending on the type. For example, clients with the dock type are placed on the side of the screen while other like combo are totally ignored and never considered clients in the first place.

Valid types are:

Name	Description
desktop	The root client, it cannot be moved or resized.
dock	A client attached to the side of the screen.
splash	A client, usually without titlebar shown when an application starts.
dialog	A dialog, see transient_for.
menu	A context menu.
toolbar	A floating toolbar.
utility
dropdown_menu	A context menu attached to a parent position.
popup_menu	A context menu.
notification	A notification popup.
combo	A combobox list menu.
dnd	A drag and drop indicator.
normal	A normal application main window.

More information can be found here

Emit signals:

property::type When the type value changes.

self client The object which changed (useful when connecting many object to the same callback).

class string · 1 signal

The client class.

A class usually maps to the application name. It is useful in, among other places, the rules to apply different properties to different clients. It is also useful, along with instance, to implement “windows counter” used in many popular docks and Alt-Tab like popups.

To get a client class from the command line, use the command:

xprop WM_CLASS

The class will be the second string.

This should never change after the client is created, but some buggy application like the Spotify desktop client are known to violate the specification and do it anyway. There is a signal for this property, but it should hopefully never be useful. If your applications change their classes, please report a bug to them and point to ICCCM §4.1.2.5. It tends to break ruled.client and other AwesomeWM APIs.

Emit signals:

property::class When the class value changes.

self client The object which changed (useful when connecting many object to the same callback).

instance string · 1 signal

The client instance.

The instance is a subtype of the class. Each class can have multiple instances. This is useful in the ruled.client rules to filter clients and apply different properties to them.

To get a client instance from the command line, use the command:

 xprop WM_CLASS

The instance will be the first string.

This should never change after the client is created. There is a signal for * this property, but it should hopefully never be useful. If your applications change their classes, please report a bug to them and point to ICCCM §4.1.2.5. It tends to break ruled.client and other AwesomeWM APIs.

Emit signals:

property::instance When the instance value changes.

self client The object which changed (useful when connecting many object to the same callback).

pid integer · 1 signal

The client PID, if available.

This will never change.

Click to display more

Emit signals:

property::pid When the pid value changes.

self client The object which changed (useful when connecting many object to the same callback).

role string · 1 signal

The window role, if available.

Emit signals:

property::role When the role value changes.

self client The object which changed (useful when connecting many object to the same callback).

machine string · 1 signal

The machine client is running on.

X11 windows can “live” in another computer but shown in another one. This is called “network transparency” and is either used directly by allowing remote windows using the xhosts command for using proxies such as ssh -X or ssh -Y.

According to EWMH, this property contains the value returned by gethostname() on the computer that the client is running on.

Click to display more

Emit signals:

property::machine When the machine value changes.

self client The object which changed (useful when connecting many object to the same callback).

icon_name string · 1 signal

The client name when iconified.
Click to display more

Emit signals:

property::icon_name When the icon_name value changes.

self client The object which changed (useful when connecting many object to the same callback).

icon surface · 1 signal

The client icon as a surface.

This property holds the client icon closest to the size configured via awesome.set_preferred_icon_size.

It is not a path or an “real” file. Rather, it is already a bitmap surface.

Typically you would want to use awful.widget.clienticon to get this as a widget.

Working with icons is tricky because their surfaces do not use reference counting correctly. If gears.surface(c.icon) is called multiple time on the same icon, it will cause a double-free error and Awesome will crash. To get a copy of the icon, you can use:

local s = gears.surface(c.icon)
local img = cairo.ImageSurface.create(cairo.Format.ARGB32, s:get_width(), s:get_height())
local cr  = cairo.Context(img)
cr:set_source_surface(s, 0, 0)
cr:paint()

Usage:

local ib = wibox.widget.imagebox(c.icon)

Click to display more

Emit signals:

property::icon When the icon value changes.

self client The object which changed (useful when connecting many object to the same callback).

icon_sizes table · 1 signal

The available sizes of client icons. This is a table where each entry contains the width and height of an icon.

Emit signals:

property::icon_sizes When the icon_sizes value changes.

self client The object which changed (useful when connecting many object to the same callback).

screen screen · 1 signal

Client screen.

The screen corresponds to the top-left corner of the window.

Please note that clients can only be on one screen at once. X11 does not natively allow clients to be in multiple locations at once. Changing the screen directly will affect the tags and may cause several other changes to the state in order to ensure that a client’s position and its screen are consistent.

Emit signals:

property::screen When the screen value changes.

self client The object which changed (useful when connecting many object to the same callback).

hidden boolean · 1 signal

Define if the client must be hidden, i.e. never mapped, invisible in taskbar.

Emit signals:

property::hidden When the hidden value changes.

self client The object which changed (useful when connecting many object to the same callback).

minimized boolean · 1 signal

Define it the client must be iconify, i.e. only visible in taskbar.

Emit signals:

property::minimized When the minimized value changes.

self client The object which changed (useful when connecting many object to the same callback).

size_hints_honor boolean · 1 signal

Honor size hints, e.g. respect size ratio.

For example, a terminal such as xterm require the client size to be a multiple of the character size. Honoring size hints will cause the terminal window to have a small gap at the bottom.

This is enabled by default. To disable it by default, see ruled.client.

Emit signals:

property::size_hints_honor When the size_hints_honor value changes.

self client The object which changed (useful when connecting many object to the same callback).

border_width integer · 1 signal

The client border width.

Emit signals:

property::border_width When the border_width value changes.

self client The object which changed (useful when connecting many object to the same callback).

border_color color · 1 signal

The client border color.

Type constraints:

border_color color Any string, gradients and patterns will be converted to a cairo pattern.

Emit signals:

property::border_color When the border_color value changes.

self client The object which changed (useful when connecting many object to the same callback).

urgent boolean · 1 signal

The client urgent state.

Emit signals:

property::urgent When the urgent value changes.

self client The object which changed (useful when connecting many object to the same callback).

content surface

A cairo surface for the client window content.

To get the screenshot, use:

gears.surface(c.content)

To save it, use:

gears.surface(c.content):write_to_png(path)

Please note that this only creates a new cairo surface referring to the client’s content. This means that changes to the client’s content may or may not become visible in the returned surface. If you want to take a screenshot, a copy of the surface’s content needs to be taken. Note that the content of parts of a window that are currently not visible are undefined.

The only way to get an animated client screenshot widget is to poll this property multiple time per seconds. This is obviously a bad idea.

This property has no signals when the content changes.

Type constraints:

opacity number Between 0 (transparent) to 1 (opaque).

Emit signals:

property::opacity When the opacity value changes.

self client The object which changed (useful when connecting many object to the same callback).

ontop boolean · 1 signal

The client is on top of every other windows.

Emit signals:

property::ontop When the ontop value changes.

self client The object which changed (useful when connecting many object to the same callback).

above boolean · 1 signal

The client is above normal windows.

Emit signals:

property::above When the above value changes.

self client The object which changed (useful when connecting many object to the same callback).

below boolean · 1 signal

The client is below normal windows.

Emit signals:

property::below When the below value changes.

self client The object which changed (useful when connecting many object to the same callback).

fullscreen boolean · 1 signal · 1 permission

The client is fullscreen or not.

Usage example

  screen[1].clients[1].maximized            = true
  screen[2].clients[1].maximized_vertical   = true
  screen[3].clients[1].maximized_horizontal = true
  screen[4].clients[1].fullscreen           = true

Click to display more

Emit signals:

property::fullscreen When the fullscreen value changes.

self client The object which changed (useful when connecting many object to the same callback).

Requested actions or permissions:

Class	Permission	Context	Default	Description
client	geometry	fullscreen	granted	When the client must be resized because it became (or stop being) fullscreen.

maximized boolean · 1 signal · 1 permission

The client is maximized (horizontally and vertically) or not.

Usage example

  screen[1].clients[1].maximized            = true
  screen[2].clients[1].maximized_vertical   = true
  screen[3].clients[1].maximized_horizontal = true
  screen[4].clients[1].fullscreen           = true

Emit signals:

property::maximized When the maximized value changes.

self client The object which changed (useful when connecting many object to the same callback).

Requested actions or permissions:

Class	Permission	Context	Default	Description
client	geometry	maximized	granted	When the client must be resized because it became (or stop being) maximized.

maximized_horizontal boolean · 1 signal · 1 permission

The client is maximized horizontally or not.

Usage example

  screen[1].clients[1].maximized            = true
  screen[2].clients[1].maximized_vertical   = true
  screen[3].clients[1].maximized_horizontal = true
  screen[4].clients[1].fullscreen           = true

Click to display more

Emit signals:

property::maximized_horizontal When the maximized_horizontal value changes.

self client The object which changed (useful when connecting many object to the same callback).

Requested actions or permissions:

Class	Permission	Context	Default	Description
client	geometry	maximized_horizontal	granted	When the client must be resized because it became (or stop being) maximized horizontally.

maximized_vertical boolean · 1 signal · 1 permission

The client is maximized vertically or not.

Usage example

  screen[1].clients[1].maximized            = true
  screen[2].clients[1].maximized_vertical   = true
  screen[3].clients[1].maximized_horizontal = true
  screen[4].clients[1].fullscreen           = true

Click to display more

Emit signals:

property::maximized_vertical When the maximized_vertical value changes.

self client The object which changed (useful when connecting many object to the same callback).

Requested actions or permissions:

Class	Permission	Context	Default	Description
client	geometry	maximized_vertical	granted	When the client must be resized because it became (or stop being) maximized vertically.

transient_for client · 1 signal

The client the window is transient for.

A transient window is a client that “belongs” to another client. If the client is also modal, then the parent client cannot be focused while the child client exists. This is common for “Save as” dialogs or other dialogs where it is not possible to modify the content of the “parent” client while the dialog is open.

However, modal is not a requirement for using the transient_for concept. “Tools” such as popup palette in canvas-and-palettes applications can belong to each other without being modal.

Emit signals:

property::transient_for When the transient_for value changes.

self client The object which changed (useful when connecting many object to the same callback).

group_window integer · 1 signal

Window identification unique to a group of windows.

This is the ID of the group window, not a client object. The group window is most likely not a visible client, but only an invisible and internal window.

Emit signals:

property::group_window When the group_window value changes.

self client The object which changed (useful when connecting many object to the same callback).

leader_window number · 1 signal

Identification unique to windows spawned by the same command.

This is the ID of the group window, not a client object.

Emit signals:

property::leader_window When the leader_window value changes.

self client The object which changed (useful when connecting many object to the same callback).

size_hints table or nil · 1 signal

A table with size hints of the client.

For details on the meaning of the fields, refer to ICCCM § 4.1.2.3 WM_NORMAL_HINTS.

Please note that most fields are optional and may or may not be set.

When the client is tiled, the size_hints usually get in the way and cause the layouts to behave incorrectly. To mitigate this, it is often advised to set size_hints_honor to false in the ruled.client rules.

Type constraints:

hints The hints.
- user_position table or nil A table with x and y keys. It contains the preferred position of the client. This is set when the position has been modified by the user. See program_position. (optional)
- program_position table or nil A table with x and y keys. It contains the preferred position of the client. This is set when the application itself requests a specific position. See user_position. (optional)
- user_size table or nil A table with width and height. This contains the client preferred size when it has previously been set by the user. See program_size for the equivalent when the applications itself wants to specify its preferred size. (optional)
- program_size table or nil A table with width and height. This contains the client preferred size as specified by the application. (optional)
- max_width integer or nil The maximum width (in pixels). (optional)
- max_height integer or nil The maximum height (in pixels). (optional)
- min_width integer or nil The minimum width (in pixels). (optional)
- min_height integer or nil The minimum height (in pixels). (optional)
- width_inc integer or nil The number of pixels by which the client width may be increased or decreased. For example, for terminals, the size has to be proportional with the monospace font size. (optional)
- height_inc integer or nil The number of pixels by which the client height may be increased or decreased. For example, for terminals, the size has to be proportional with the monospace font size. (optional)
- win_gravity string or nil The client gravity defines the corder from which the size is computed. For most clients, it is north_west, which corresponds to the top-left of the window. This will affect how the client is resized and other size related operations. (optional)
- min_aspect_num integer or nil (optional)
- min_aspect_den integer or nil (optional)
- max_aspect_num integer or nil (optional)
- max_aspect_den integer or nil (optional)
- base_width integer or nil (optional)
- base_height integer or nil (optional)

Emit signals:

property::size_hints When the size_hints value changes.

self client The object which changed (useful when connecting many object to the same callback).

motif_wm_hints table · 1 signal

The motif WM hints of the client.

This is nil if the client has no motif hints. Otherwise, this is a table that contains the present properties. Note that awesome provides these properties as-is and does not interpret them for you. For example, if the function table only has “resize” set to true, this means that the window requests to be only resizable, but asks for the other functions not to be able. If however both “resize” and “all” are set, this means that all but the resize function should be enabled.

Type constraints:

hints The hints.
- functions.all boolean (optional)
- functions.resize boolean (optional)
- functions.move boolean (optional)
- functions.minimize boolean (optional)
- functions.maximize boolean (optional)
- functions.close boolean (optional)
- decorations.all boolean (optional)
- decorations.border boolean (optional)
- decorations.resizeh boolean (optional)
- decorations.title boolean (optional)
- decorations.menu boolean (optional)
- decorations.minimize boolean (optional)
- decorations.maximize boolean (optional)
- input_mode string This is either modeless, primary_application_modal, system_modal, full_application_modal or unknown. (optional)
- status.tearoff_window boolean (optional)

Click to display more

Emit signals:

property::motif_wm_hints When the motif_wm_hints value changes.

self client The object which changed (useful when connecting many object to the same callback).

sticky boolean · 1 signal

Set the client sticky, i.e. available on all tags.

Please note that AwesomeWM implements sticky clients per screens rather than globally like some other implementations.

Emit signals:

property::sticky When the sticky value changes.

self client The object which changed (useful when connecting many object to the same callback).

modal boolean · 1 signal

Indicate if the client is modal.

A transient window is a client that “belongs” to another client. If the client is also modal, then it always has to be on top of the other window and the parent client cannot be focused while the child client exists. This is common for “Save as” dialogs or other dialogs where is not possible to modify the content of the “parent” client while the dialog is open.

However, modal is not a requirement for using the transient_for concept. “Tools” such as popup palette in canvas-and-palettes applications can belong to each other without being modal.

Emit signals:

property::modal When the modal value changes.

self client The object which changed (useful when connecting many object to the same callback).

focusable boolean · 1 signal

True if the client can receive the input focus.

The client will not get focused even when the user click on it.

Emit signals:

property::focusable When the focusable value changes.

self client The object which changed (useful when connecting many object to the same callback).

shape_bounding surface · 1 signal

The client’s bounding shape as set by awesome as a (native) cairo surface.

The bounding shape is the outer shape of the client. It is outside of the border.

Do not use this directly unless you want total control over the shape (such as shape with holes). Even then, it is usually recommended to use transparency in the titlebars and a compositing manager. For the vast majority of use cases, use the shape property.

Emit signals:

property::shape_bounding When the shape_bounding value changes.

self client The object which changed (useful when connecting many object to the same callback).

shape_clip surface · 1 signal

The client’s clip shape as set by awesome as a (native) cairo surface.

The shape_clip is the shape of the client content. It is inside the border.

Emit signals:

property::shape_clip When the shape_clip value changes.

self client The object which changed (useful when connecting many object to the same callback).

shape_input surface · 1 signal

The client’s input shape as set by awesome as a (native) cairo surface.

The input shape is the shape where mouse input will be passed to the client rather than propagated below it.

Emit signals:

property::shape_input When the shape_input value changes.

self client The object which changed (useful when connecting many object to the same callback).

client_shape_bounding surface · 1 signal

The client’s bounding shape as set by the program as a (native) cairo surface.

Emit signals:

property::client_shape_bounding When the client_shape_bounding value changes.

self client The object which changed (useful when connecting many object to the same callback).

client_shape_clip surface · 1 signal

The client’s clip shape as set by the program as a (native) cairo surface.

Emit signals:

property::client_shape_clip When the client_shape_clip value changes.

self client The object which changed (useful when connecting many object to the same callback).

startup_id string · 1 signal

The FreeDesktop StartId.

When a client is spawned (like using a terminal or awful.spawn, a startup notification identifier is created. When the client is created, this identifier remain the same. This allow to match a spawn event to an actual client.

This is used to display a different mouse cursor when the application is loading and also to attach some properties to the newly created client (like a tag or floating state).

Some applications, like xterm, don’t support startup notification. While not perfect, the addition the following code to rc.lua will mitigate the issue. Please note that this code is Linux specific.

local blacklisted_snid = setmetatable({}, {__mode = "v" })

--- Make startup notification work for some clients like XTerm. This is ugly
-- but works often enough to be useful.
local function fix_startup_id(c)
    -- Prevent "broken" sub processes created by <code>c</code> to inherit its SNID
    if c.startup_id then
        blacklisted_snid[c.startup_id] = blacklisted_snid[c.startup_id] or c
        return
    end

    if not c.pid then return end

    -- Read the process environment variables
    local f = io.open("/proc/"..c.pid.."/environ", "rb")

    -- It will only work on Linux, that's already 99% of the userbase.
    if not f then return end

    local value = _VERSION <= "Lua 5.1" and "([^\z]*)\0" or "([^\0]*)\0"
    local snid = f:read("*all"):match("STARTUP_ID=" .. value)
    f:close()

    -- If there is already a client using this SNID, it means it's either a
    -- subprocess or another window for the same process. While it makes sense
    -- in some case to apply the same rules, it is not always the case, so
    -- better doing nothing rather than something stupid.
    if blacklisted_snid[snid] then return end

    c.startup_id = snid

    blacklisted_snid[snid] = c
end

ruled.client.add_rule_source(
    "snid", fix_startup_id, {}, {"awful.spawn", "ruled.client"}
)

Emit signals:

property::startup_id When the startup_id value changes.

self client The object which changed (useful when connecting many object to the same callback).

valid boolean · 1 signal

If the client that this object refers to is still managed by awesome.

To avoid errors, use:

local is_valid = pcall(function() return c.valid end) and c.valid

Emit signals:

property::valid When the valid value changes.

self client The object which changed (useful when connecting many object to the same callback).

first_tag tag · 1 signal

The first tag of the client.

Optimized form of c:tags()[1]. Not every workflow uses the ability to set multiple tags to a client. It is often enough to only get the first tag and ignore everything else.

Emit signals:

property::first_tag When the first_tag value changes.

self client The object which changed (useful when connecting many object to the same callback).

buttons table · 1 signal

Get or set mouse buttons bindings for a client.

Emit signals:

property::buttons When the buttons value changes.

self client The object which changed (useful when connecting many object to the same callback).

keys table · 1 signal

Get or set keys bindings for a client.

Emit signals:

property::keys When the keys value changes.

self client The object which changed (useful when connecting many object to the same callback).

marked boolean · 3 signals

If a client is marked or not.
Click to display more

Emit signals:

marked (for legacy reasons, use property::marked)
unmarker (for legacy reasons, use property::marked)
property::marked

is_fixed boolean · 1 signal

Return if a client has a fixed size or not.

This property is read only.

Type constraints:

is_fixed boolean The fixed size state (default false)

Emit signals:

property::is_fixed When the is_fixed value changes.

self client The object which changed (useful when connecting many object to the same callback).

immobilized_horizontal boolean

Is the client immobilized horizontally?

Does the client have a fixed horizontal position and width, i.e. is it fullscreen, maximized, or horizontally maximized?

This property is read only.

Type constraints:

immobilized_horizontal boolean The immobilized state (default false)

Type constraints:

immobilized_vertical boolean The immobilized state (default false)

Type constraints:

floating boolean The floating state.

Click to display more

Emit signals:

property::floating When the floating value changes.

self client The object which changed (useful when connecting many object to the same callback).

Requested actions or permissions:

Class	Permission	Context	Default	Description
client	border	floating	granted	When a border update is required because the client focus status changed.
client	border	active	granted	When a client becomes active and is not floating.
client	border	inactive	granted	When a client stop being active and is not floating.

x integer · 3 signals

The x coordinates.
Click to display more

Emit signals:

property::geometry

geo table The geometry (with x, y, width, height).

property::x
property::position

y integer · 3 signals

The y coordinates.
Click to display more

Emit signals:

property::geometry

geo table The geometry (with x, y, width, height).

property::y
property::position

width integer · 3 signals

The width of the client.
Click to display more

Emit signals:

property::geometry

geo table The geometry (with x, y, width, height).

property::width
property::size

height integer · 3 signals

The height of the client.
Click to display more

Emit signals:

property::geometry

geo table The geometry (with x, y, width, height).

property::height
property::size

dockable boolean · 1 signal

If the client is dockable.

A dockable client is an application confined to the edge of the screen. The space it occupies is substracted from the screen.workarea.

Clients with a type of “utility”, “toolbar” or “dock” are dockable by default.

Type constraints:

dockable boolean The dockable state

Click to display more

Emit signals:

property::dockable When the dockable value changes.

self client The object which changed (useful when connecting many object to the same callback).

requests_no_titlebar boolean · 1 signal

If the client requests not to be decorated with a titlebar.

The motif wm hints allow a client to request not to be decorated by the WM in various ways. This property uses the motif MWM_DECOR_TITLE hint and interprets it as the client (not) wanting a titlebar.

Type constraints:

requests_no_titlebar boolean Whether the client requests not to get a titlebar.

Click to display more

Emit signals:

property::requests_no_titlebar When the requests_no_titlebar value changes.

self client The object which changed (useful when connecting many object to the same callback).

shape gears.shape · 1 signal

Set the client shape.

Type constraints:

A gears.shape gears.shape compatible function.

Emit signals:

property::shape When the shape value changes.

self client The object which changed (useful when connecting many object to the same callback).
new_value A The new value affected to the property.

active boolean · 2 permissions

Return true if the client is active (has focus).

This property is READ ONLY. Use c:activate { context = "myreason" } to change the focus.

The reason for this is that directly setting the focus (which can also be done using client.focus = c) will bypass the focus stealing filters. This is easy at first, but as this gets called from more and more places, it quickly become unmanageable. This coding style is recommended for maintainable code:

-- Check if a client has focus:
if c.active then
    -- do something
end

-- Check if there is a active (focused) client:
if client.focus ~= nil then
    -- do something
end

-- Get the active (focused) client:
local c = client.focus

-- Set the focus:
c:activate {
    context       = "myreason",
    switch_to_tag = true,
}

-- Get notified when a client gets or loses the focus:
c:connect_signal("property::active", function(c, is_active)
    -- do something
end)

-- Get notified when any client gets or loses the focus:
client.connect_signal("property::active", function(c, is_active)
    -- do something
end)

-- Get notified when any client gets the focus:
client.connect_signal("focus", function(c)
    -- do something
end)

-- Get notified when any client loses the focus:
client.connect_signal("unfocus", function(c)
    -- do something
end)

Requested actions or permissions:

Class	Permission	Context	Default	Description
client	border	active	granted	When a client becomes active.
client	border	inactive	granted	When a client stop being active.

Object methods

:struts (struts) -> table

Return client struts (reserved space at the edge of the screen).

The struts area is a table with a left, right, top and bottom keys to define how much space of the screen workarea this client should reserve for itself.

This corresponds to EWMH’s _NET_WM_STRUT and _NET_WM_STRUT_PARTIAL.

Parameters:

struts table A table with new strut values, or none.

Returns:

table

Returns:

boolean

:kill ()

Kill a client.

This method can be used to close (kill) a client using the X11 protocol. To use the POSIX way to kill a process, use awesome.kill.

Parameters:

c client A client to swap with.

Emit signals:

swapped

The client other client.
<code>true</code> boolean when :swap() was called on self rather than the other client. false when :swap() was called on the other client.

list

:tags (tags_table) -> table · 1 signal

Access or set the client tags.

Use the first_tag field to access the first tag of a client directly.

Parameters:

tags_table table A table with tags to set, or nil to get the current tags.

Returns:

table

Emit signals:

property::tags

:raise () · 1 signal

Raise a client on top of others which are on the same layer.

Emit signals:

raised

:lower () · 1 signal

Lower a client on bottom of others which are on the same layer.

Emit signals:

lowered

:unmanage ()

Stop managing a client.

:geometry (geo) -> table

Return or set client geometry.

Parameters:

geo A table with new coordinates, or nil.
- x integer The horizontal position.
- y integer The vertical position.
- width integer The height.
- width integer The height.

Returns:

table

Parameters:

width integer Desired width of client
height integer Desired height of client

Returns:

integer Actual width of client
integer Actual height of client

Parameters:

index interger The index in the list of icons to get.

Returns:

surface

:jump_to (merge) · 1 permission

Jump to the given client. Takes care of focussing the screen, the right tag, etc.

Parameters:

merge bool or function If true then merge tags (select the client’s first tag additionally) when the client is not visible. If it is a function, it will be called with the client and its first tag as arguments.

Requested actions or permissions:

Class	Permission	Context	Default	Description
client	activate	client.jumpto	granted	When a client is activated because `c:jump_to()` is called.

:append_keybinding (key)

Append a keybinding.

Parameters:

key awful.key The key.

Parameters:

key awful.key The key.

:append_mousebinding (button)

Append a mousebinding.

Parameters:

button awful.button The button.

:remove_mousebinding (button)

Remove a mousebinding.

Parameters:

button awful.button The button.

:relative_move ([x=c.x[, y=c.y[, w=c.width[, h=c.height]]]])

Move/resize a client relative to current coordinates.

Parameters:

x number The relative x coordinate. (default c.x)
y number The relative y coordinate. (default c.y)
w number The relative width. (default c.width)
h number The relative height. (default c.height)

Parameters:

target tag The tag to move the client to.

Requested actions or permissions:

Class	Permission	Context	Default	Description
client	activate	client.movetotag	granted	When a client could be activated because `c:move_to_tag()` was called.

:toggle_tag (target)

Toggle a tag on a client.

Parameters:

target tag The tag to move the client to.

Parameters:

s screen The screen, default to current + 1. (default c.screen.index+1)

Requested actions or permissions:

Class	Permission	Context	Default	Description
client	activate	client.movetoscreen	granted	When a client could be activated because `c:move_to_screen()` was called.

:to_selected_tags ()

Tag a client with the set of current tags.

Parameters:

matcher function A function that should return true, if a matching parent client is found.

Returns:

client or nil

Parameters:

c2 client The parent client to check.

Returns:

client or nil

Parameters:

args
- context string Why was this activate called? (default other)
- raise boolean Raise the client to the top of its layer. (default true)
- force boolean Force the activation even for unfocusable clients. (default false)
- switch_to_tags boolean (default false)
- switch_to_tag boolean (default false)
- action boolean Once activated, perform an action. (default false)
- toggle_minimization boolean (default false)

Parameters:

permission string The permission name (just the name, no request::).
context string The reason why this permission is requested.

Parameters:

permission string The permission name (just the name, no request::).
context string The reason why this permission is requested.

Parameters:

name string The name of the signal.
... Extra arguments for the callback functions. Each connected function receives the object as first argument and then any extra arguments that are given to emit_signal().

:connect_signal (name, func) · Inherited from gears.object

Connect to a signal.

Parameters:

name string The name of the signal.
func function The callback to call when the signal is emitted.

:weak_connect_signal (name, func) · Inherited from gears.object

Connect to a signal weakly.

This allows the callback function to be garbage collected and automatically disconnects the signal when that happens.

Warning: Only use this function if you really, really, really know what you are doing.

Parameters:

name string The name of the signal.
func function The callback to call when the signal is emitted.

Signals

scanning · Class level only

AwesomeWM is about to scan for existing clients.

Connect to this signal when code needs to be executed after screens are initialized, but before clients are added.

scanned · Class level only

AwesomeWM is done scanning for clients.

This is emitted before the startup signal and after the scanning signal.

focus · Class level only

When a client gains focus.

list · Class level only

Before manage, after unmanage, and when clients swap.

swapped

When 2 clients are swapped

Arguments:

client client The other client
is_source boolean If self is the source or the destination of the swap

request::manage · 1 permission · Class level only

When a new client appears and gets managed by Awesome.

This request should be implemented by code which track the client. It isn’t recommended to use this to initialize the client content. This use case is a better fit for ruled.client, which has built-in dependency management. Using this request to mutate the client state will likely conflict with ruled.client.

Arguments:

c client The client.
context string What created the client. It is currently either “new” or “startup”.
hints table More metadata (currently empty, it exists for compliance with the other request:: signals).

Click to display more

Requested actions or permissions:

Class	Permission	Context	Default	Description
client	border	added	granted	When a new client needs a its initial border settings.

request::unmanage · Class level only

When a client is going away.

Each places which store client objects in non-weak table or whose state depend on the current client should answer this request.

The contexts are:

user: c:unmanage() was called.
reparented: The window was reparented to another window. It is no longer a stand alone client.
destroyed: The window was closed.

Arguments:

c client The client.
context string Why was the client unmanaged.
hints table More metadata (currently empty, it exists for compliance with the other request:: signals).

button::press

When a mouse button is pressed in a client.

button::release

When a mouse button is released in a client.

mouse::enter

When the mouse enters a client.

mouse::leave

When the mouse leaves a client.

mouse::move

When the mouse moves within a client.

request::activate · 1 permission · Class level only

When a client should get activated (focused and/or raised).

Contexts are:

ewmh: When a client asks for focus (from X11 events).
autofocus.check_focus: When autofocus is enabled (from awful.autofocus).
autofocus.check_focus_tag: When autofocus is enabled (from awful.autofocus).
client.jumpto: When a custom lua extension asks a client to be focused (from client.jump_to).
client.swap.global_bydirection: When client swapping requires a focus change (from awful.client.swap.bydirection).
client.movetotag: When a client is moved to a new tag (from client.move_to_tag).
client.movetoscreen: When the client is moved to a new screen (from client.move_to_screen).
client.focus.byidx: When selecting a client using its index (from awful.client.focus.byidx).
client.focus.history.previous: When cycling through history (from awful.client.focus.history.previous).
menu.clients: When using the builtin client menu (from awful.menu.clients).
rules: When a new client is focused from a rule (from ruled.client).
screen.focus: When a screen is focused (from awful.screen.focus).

Default implementation: awful.ewmh.activate.

To implement focus stealing filters see awful.ewmh.add_activate_filter.

Arguments:

context string The context where this signal was used.
hints A table with additional hints:
- raise boolean should the client be raised? (default false)

Click to display more

Requested actions or permissions:

Class	Permission	Context	Default	Description
client	activate	ewmh	granted	When the client asks to be activated.

request::autoactivate · Class level only

When an event could lead to the client being activated.

This is an layer “on top” of request::activate for event which are not actual request for activation/focus, but where “it would be nice” if the client got the focus. This includes the focus-follow-mouse model and focusing previous clients when the selected tag changes.

This idea is that request::autoactivate will emit request::activate. However it is much easier to replace the handler for request::autoactivate than it is to replace the handler for request::activate. Thus it provides a nice abstraction to simplify handling the focus when switching tags or moving the mouse.

Arguments:

context string The context where this signal was used.
hints A table with additional hints:
- raise boolean should the client be raised? (default false)

request::geometry · 2 permissions · Class level only

When something request a client geometry to be modified.

Arguments:

c client The client
context string Why and what to resize. This is used for the handlers to know if they are capable of applying the new geometry.
Additional table arguments. Each context handler may interpret this differently. (default {})

Click to display more

Requested actions or permissions:

Class	Permission	Context	Default	Description
client	geometry	client_maximize_horizontal	granted	When a client (programmatically) asks for the maximization to be changed.
client	geometry	client_maximize_vertical	granted	When a client (programmatically) asks for the maximization to be changed.

request::tag · Class level only

When the tag requests to be moved to a tag or needs a new tag.

request::urgent · Class level only

When the client requests to become urgent.

request::default_mousebindings · Class level only

Emitted during startup to gather the default client mousebindings.

This signals gives a chance to all module to register new client keybindings. Assuming the client rules does not overwrite them with the keys property, they will be added to all clients.

Arguments:

context string The reason why the signal was sent (currently always startup).

request::default_keybindings · Class level only

Emitted during startup to gather the default client keybindings.

This signals gives a chance to all module to register new client keybindings. Assuming the client rules does not overwrite them with the keys property, they will be added to all clients.

Arguments:

context string The reason why the signal was sent (currently always startup).

request::default_keybindings · 1 permission · Class level only

Sent once when AwesomeWM starts to add default keybindings.

Keybindings can be set directly on clients. Actually, older version of AwesomeWM did that through the rules. However this makes it impossible for auto-configured modules to add their own keybindings. Using the signals, rc.lua or any module can cleanly manage keybindings.

Arguments:

context string The context (currently always “startup”).

Click to display more

Requested actions or permissions:

Class	Permission	Context	Default	Description
client	default_keybindings	startup	granted	Sent when AwesomeWM starts.

tagged

When a client gets tagged.

Arguments:

t tag The tag object.

unfocus

When a client gets unfocused.

untagged

When a client gets untagged.

Arguments:

t tag The tag object.

raised

Emitted when the client is raised within its layer.

Arguments:

content string The context (like “rules”) (default nil)
hints table Some hints. (default nil)

request::border · Class level only

Emited when the border client might need to be update.

The context are:

added: When a new client is created.
active: When client gains the focus (or stop being urgent/floating but is active).
inactive: When client loses the focus (or stop being urgent/floating and is not active.
urgent: When a client becomes urgent.
floating: When the floating or maximization state changes.

Arguments:

context string The context.
hints table The hints.

Deprecated signals

manage [deprecated]: Use request::manage.
unmanage [deprecated]: Use request::unmanage.
marked [deprecated]: The client marked signal.
unmarked [deprecated]: The client unmarked signal.

Theme variables

beautiful.border_color_floating color

The fallback border color when the client is floating.

Deprecated functions

awful.client.jumpto [deprecated]

Jump to the given client. Takes care of focussing the screen, the right tag, etc.

Parameters:

c client the client to jump to
merge bool or function If true then merge tags (select the client’s first tag additionally) when the client is not visible. If it is a function, it will be called with the client and its first tag as arguments.

Parameters:

s integer or screen The screen, or nil for all screens. (optional)
stacked boolean Use stacking order? (top to bottom) (default false)

Returns:

table

Parameters:

s integer or screen The screen, or nil for all screens.
stacked boolean Use stacking order? (top to bottom) (default false)

Returns:

table

Parameters:

x integer The relative x coordinate.
y integer The relative y coordinate.
w integer The relative width.
h integer The relative height.
c client The client, otherwise focused one is used. (optional)

Parameters:

target tag The tag to move the client to.
c client The client to move, otherwise the focused one is used. (optional)

Parameters:

target tag The tag to toggle.
c client The client to toggle, otherwise the focused one is used. (optional)

Parameters:

c client The client to move.
s screen The screen, default to current + 1.

Parameters:

c client The client to mark, the focused one if not specified.

awful.client.unmark [deprecated]

Unmark a client and then call ‘unmarked’ hook.

Parameters:

c client The client to unmark, or the focused one if not specified.

awful.client.ismarked [deprecated]

Check if a client is marked.

Parameters:

c client The client to check, or the focused one otherwise.

awful.client.togglemarked [deprecated]

Toggle a client as marked.

Parameters:

c client The client to toggle mark.

awful.client.getmarked [deprecated]

Return the marked clients and empty the marked table.

Returns:

table

awful.client.floating.set [deprecated]

Set a client floating state, overriding auto-detection. Floating client are not handled by tiling layouts.

Parameters:

c client A client.
s boolean True or false.

awful.client.isfixed [deprecated]

Return if a client has a fixed size or not. This function is deprecated, use c.is_fixed

Parameters:

c client The client.

Parameters:

c client A client.

Returns:

boolean

Parameters:

c client A client.

Parameters:

c client A client.

Returns:

bool

awful.client.dockable.set [deprecated]

Set a client’s dockable state, overriding auto-detection.

With this enabled you can dock windows by moving them from the center to the edge of the workarea.

Parameters:

c client A client.
value boolean True or false.

awful.client.property.get [deprecated]

Get a client property.

This method is deprecated. It is now possible to use c.value directly.

Parameters:

c client The client.
prop string The property name.

Returns:

The property value.

awful.client.property.set [deprecated]

Set a client property.

This method is deprecated. It is now possible to use c.value = value directly.

Parameters:

c client The client.
prop string The property name.
value The property value.

awful.client.run_or_raise [deprecated]

Switch to a client matching the given condition if running, else spawn it. If multiple clients match the given condition then the next one is focussed.

Parameters:

cmd string the command to execute
matcher function a function that returns true to indicate a matching client
merge bool or function If true then merge tags (select the client’s first tag additionally) when the client is not visible. If it is a function, it will be called with the client as argument.

Usage:

-- run or raise urxvt (perhaps, with tabs) on modkey + semicolon
awful.key({ modkey, }, 'semicolon', function ()
    local matcher = function (c)
        return ruled.client.match(c, {class = 'URxvt'})
    end
    awful.client.run_or_raise('urxvt', matcher)
end);

awful.client.get_transient_for_matching [deprecated]

Get a matching transient_for client (if any).

Parameters:

c client The client.
matcher function A function that should return true, if a matching parent client is found.

Returns:

client or nil

Parameters:

c client The child client (having transient_for).
c2 client The parent client to check.

Returns:

client or nil

Layout related functions

awful.client.getmaster

Get the master window.

Parameters:

s screen The screen. (default awful.screen.focused())

awful.client.setmaster

Set the client as master: put it at the beginning of other windows.

Parameters:

c client The window to set as master.

awful.client.setslave

Set the client as slave: put it at the end of other windows.

Parameters:

c client The window to set as slave.

awful.client.idx

Calculate a client’s column number, index in that column, and number of visible clients in this column.

Parameters:

c client the client

awful.client.setwfact · 1 signal

Set the window factor of a client

Parameters:

wfact number the window factor value
c client the client

Click to display more

Emit signals:

property::windowfact

awful.client.incwfact · 1 signal

Change window factor of a client.

Parameters:

add number Amount to increase/decrease the client’s window factor. Should be between -current_window_factor and something close to infinite. The normalisation then ensures that the sum of all factors is 1.
c client the client.

Click to display more

Emit signals:

property::windowfact

Extra properties available in the rules

placement N/A

The client default placement on the screen.

The default config uses:

awful.placement.no_overlap+awful.placement.no_offscreen

Usage example

ruled.client.append_rule {
    rule = { class = 'mplayer' },
    properties = {
        floating  = true,
        placement = awful.placement.centered,
        width     = 640,
        height    = 480,
    },
}

-- Spawn mplayer
awful.spawn('mplayer')

Tables

awful.client.object

Client class.

This table allow to add more dynamic properties to the clients. For example, doing:

 function awful.client.object.set_my_cool_property(c, value)
     -- Some logic code
     c._my_secret_my_cool_property = value
     c:emit_signal("property::my_cool_property)
 end

 function awful.client.object.get_my_cool_property()
     return c._my_secret_my_cool_property
 end

Will add a new “my_cool_property” dyanmic property to all client. These methods will be called when an user does c.my_cool_property = "something" or set them in awdul.rules.

Note that doing this isn’t required to set random properties to the client, it is only useful when setting or getting these properties require code to executed.

Fields

client.focus client

The focused client or nil (in case there is none).

It is not recommanded to set the focused client using this property. Please use c:activate{} instead of client.focus = c. Setting the focus directly bypasses all the filters and emits fewer signals, which tend to cause unwanted side effects and make it harder to alter the code behavior in the future. It usually takes more code to use this rather than :activate{} because all the boilerplate code (such as c:raise()) needs to be added everywhere.

The main use case for this field is to check when there is an active client.

 if client.focus ~= nil then
     -- do something
 end

If you want to check if a client is active, use:

 if c.active then
     -- do something
 end

lib.awful.client.focus Functions

awful.client.focus.history.delete (c)

Remove a client from the focus history

Parameters:

c client The client that must be removed.

awful.client.focus.byidx (i[, c]) · 1 permission

Focus a client by its relative index.

Parameters:

i The index.
c client The client. (optional)

Click to display more

Requested actions or permissions:

Class	Permission	Context	Default	Description
client	activate	client.focus.byidx	granted	When `awful.focus.byidx` is called.

awful.client.focus.filter (c)

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.

Parameters:

c client A client.

Returns:

The same client if it’s ok, nil otherwise.

awful.client.focus.history.add (c)

Update client focus history.

Parameters:

c client The client that has been focused.

awful.client.focus.history.get (s, idx, filter)

Get the latest focused client for a screen in history.

Parameters:

s int or screen The screen to look for.
idx int The index: 0 will return first candidate, 1 will return second, etc.
filter function An optional filter. If no client is found in the first iteration, awful.client.focus.filter is used by default to get any client.

Returns:

client.object

awful.client.focus.history.previous () · 1 permission

Focus the previous client in history.
Click to display more

Requested actions or permissions:

Class	Permission	Context	Default	Description
client	activate	client.focus.history.previous	granted	When `awful.focus.history.previous` is called.

awful.client.focus.bydirection (dir[, c[, stacked=false]]) · 1 permission

Focus a client by the given direction.

Parameters:

dir string The direction, can be either "up", "down", "left" or "right".
c client The client. (optional)
stacked boolean Use stacking order? (top to bottom) (default false)

Click to display more

Requested actions or permissions:

Class	Permission	Context	Default	Description
client	activate	client.focus.bydirection	granted	When `awful.focus.bydirection` is called.

awful.client.focus.global_bydirection (dir[, c[, stacked=false]]) · 1 permission

Focus a client by the given direction. Moves across screens.

Parameters:

dir The direction, can be either “up”, “down”, “left” or “right”.
c client The client. (optional)
stacked boolean Use stacking order? (top to bottom) (default false)

Click to display more

Requested actions or permissions:

Class	Permission	Context	Default	Description
client	activate	client.focus.global_bydirection	granted	When awful.client.focus.global_bydirection is called.

lib.awful.client.shape Functions

awful.client.shape.get_transformed (c, shape_name)

Get one of a client’s shapes and transform it to include window decorations.

Parameters:

c client The client whose shape should be retrieved
shape_name string Either “bounding” or “clip”

awful.client.shape.update.all (c)

Update all of a client’s shapes from the shapes the client set itself.

Parameters:

c client The client to act on

awful.client.shape.update.bounding (c)

Update a client’s bounding shape from the shape the client set itself.

Parameters:

c client The client to act on

awful.client.shape.update.clip (c)

Update a client’s clip shape from the shape the client set itself.

Parameters:

c client The client to act on

lib.awful.client.urgent Functions

awful.urgent.get ()

Get the first client that got the urgent hint.

Returns:

client.object

awful.urgent.jumpto (merge)

Jump to the client that received the urgent hint first.

Parameters:

merge bool or function If true then merge tags (select the client’s first tag additionally) when the client is not visible. If it is a function, it will be called with the client as argument.

awful.urgent.add (c, prop) · 3 permissions

Adds client to urgent stack.

Parameters:

c client The client object.
prop The property which is updated.

Click to display more

Requested actions or permissions:

Class	Permission	Context	Default	Description
client	border	active	granted	When a client becomes active and is no longer urgent.
client	border	inactive	granted	When a client stop being active and is no longer urgent.
client	border	urgent	granted	When a client stop becomes urgent.

awful.urgent.delete (c)

Remove client from urgent stack.

Parameters:

c client The client object.

awesome

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Module: client

Core components relationship

Info:

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Module: `client`