Module: `wibox.layout.align`

Usage example

Usage:

wibox.widget {
    generic_widget( 'first'  ),
    generic_widget( 'second' ),
    generic_widget( 'third'  ),
    layout  = wibox.layout.align.horizontal
}

Info:

Copyright: 2010 Uli Schlachter
Author: Uli Schlachter

Constructors

wibox.layout.align.horizontal ([left[, middle[, right]]])	Returns a new horizontal align layout.
wibox.layout.align.vertical ([top[, middle[, bottom]]])	Returns a new vertical align layout.

Object properties

first	widget	Set the layout’s first widget.
second	widget	Set the layout’s second widget.
third	widget	Set the layout’s third widget.
expand	string	Set the expand mode which determines how sub widgets expand to take up unused space.
children	table	Get or set the children elements.	Inherited from wibox.widget
all_children	table	Get all direct and indirect children widgets.	Inherited from wibox.widget
forced_height	number or nil	Force a widget height.	Inherited from wibox.widget
forced_width	number or nil	Force a widget width.	Inherited from wibox.widget
opacity	number	The widget opacity (transparency).	Inherited from wibox.widget
visible	boolean	The widget visibility.	Inherited from wibox.widget
buttons	table	The widget buttons.	Inherited from wibox.widget

Object methods

:set (index, widget2)	Set a widget at a specific index, replace the current one.
:replace_widget (widget, widget2[, recursive=false])	Replace the first instance of `widget` in the layout with `widget2`.
:swap (index1, index2)	Swap 2 widgets in a layout.
:swap_widgets (widget1, widget2[, recursive=false])	Swap 2 widgets in a layout.
:reset ()	Reset a ratio layout.
:setup {[args]}	Set a declarative widget hierarchy description.	Inherited from wibox.widget
:add_button (button)	Add a new awful.button to this widget.	Inherited from wibox.widget
:emit_signal_recursive (signal_name, ...)	Emit a signal and ensure all parent widgets in the hierarchies also forward the signal.	Inherited from wibox.widget
: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

widget::layout_changed	When the layout (size) change.	Inherited from wibox.widget
widget::redraw_needed	When the widget content changed.	Inherited from wibox.widget
button::press	When a mouse button is pressed over the widget.	Inherited from wibox.widget
button::release	When a mouse button is released over the widget.	Inherited from wibox.widget
mouse::enter	When the mouse enter a widget.	Inherited from wibox.widget
mouse::leave	When the mouse leave a widget.	Inherited from wibox.widget

Constructors

wibox.layout.align.horizontal ([left[, middle[, right]]])

Returns a new horizontal align layout. An align layout can display up to three widgets. The widget set via :set_left() is left-aligned. :set_right() sets a widget which will be right-aligned. The remaining space between those two will be given to the widget set via :set_middle().

Parameters:

left widget Widget to be put to the left. (optional)
middle widget Widget to be put to the middle. (optional)
right widget Widget to be put to the right. (optional)

wibox.layout.align.vertical ([top[, middle[, bottom]]])

Returns a new vertical align layout. An align layout can display up to three widgets. The widget set via :set_top() is top-aligned. :set_bottom() sets a widget which will be bottom-aligned. The remaining space between those two will be given to the widget set via :set_middle().

Parameters:

top widget Widget to be put to the top. (optional)
middle widget Widget to be put to the middle. (optional)
bottom widget Widget to be put to the right. (optional)

Object properties

first (widget) · 1 signal

Set the layout’s first widget. This is the widget that is at the left/top
Click to display more

Emit signals:

property::first When the first value changes.

self wibox.layout.align The object which changed (useful when connecting many object to the same callback).
new_value first The new value affected to the property.

second (widget) · 1 signal

Set the layout’s second widget. This is the centered one.
Click to display more

Emit signals:

property::second When the second value changes.

self wibox.layout.align The object which changed (useful when connecting many object to the same callback).
new_value second The new value affected to the property.

third (widget) · 1 signal

Set the layout’s third widget. This is the widget that is at the right/bottom
Click to display more

Emit signals:

property::third When the third value changes.

self wibox.layout.align The object which changed (useful when connecting many object to the same callback).
new_value third The new value affected to the property.

expand (string)

Set the expand mode which determines how sub widgets expand to take up unused space.

The following values are valid:

“inside” - Default option. Size of outside widgets is determined using their fit function. Second, middle, or center widget expands to fill remaining space.
“outside” - Center widget is sized using its fit function and placed in the center of the allowed space. Outside widgets expand (or contract) to fill remaining space on their side.
“none” - All widgets are sized using their fit function, drawn to only the returned space, or remaining space, whichever is smaller. Center widget gets priority.

Type constraints:

mode string How to use unused space. (default inside)

children (table) · Inherited from wibox.widget

Get or set the children elements.

Type constraints:

children table The children.

all_children (table) · Inherited from wibox.widget

Get all direct and indirect children widgets. This will scan all containers recursively to find widgets Warning: This method it prone to stack overflow id the widget, or any of its children, contain (directly or indirectly) itself.

Type constraints:

children table The children.

forced_height (number or nil) · Inherited from wibox.widget

Force a widget height.

Type constraints:

height number or nil The height (nil for automatic)

forced_width (number or nil) · Inherited from wibox.widget

Force a widget width.

Type constraints:

width number or nil The width (nil for automatic)

opacity (number) · Inherited from wibox.widget

The widget opacity (transparency).

Type constraints:

opacity number The opacity (between 0 and 1) (default 1)

visible (boolean) · Inherited from wibox.widget

The widget visibility.

buttons (table) · Inherited from wibox.widget

The widget buttons.

The table contains a list of awful.button objects.

Object methods

:set (index, widget2) · 1 signal

Set a widget at a specific index, replace the current one.

Parameters:

index number A widget or a widget index
widget2 widget The widget to take the place of the first one

Returns:

boolean

Click to display more

Emit signals:

widget::replaced

self widget The layout.
widget widget index The inserted widget.
previous widget The previous widget.
index number The replaced index.

:replace_widget (widget, widget2[, recursive=false]) · 1 signal

Replace the first instance of widget in the layout with widget2.

Signal: widget::replaced The argument is the new widget and the old one and the index.

Parameters:

widget widget The widget to replace
widget2 widget The widget to replace widget with
recursive boolean Dig in all compatible layouts to find the widget. (default false)

Returns:

boolean

Click to display more

Emit signals:

widget::replaced

self widget The layout.
widget widget index The inserted widget.
previous widget The previous widget.
index number The replaced index.

:swap (index1, index2) · 1 signal

Swap 2 widgets in a layout.

Parameters:

index1 number The first widget index
index2 number The second widget index

Returns:

boolean

Click to display more

Emit signals:

widget::swapped

self widget The layout.
widget1 widget index The first widget.
widget2 widget index The second widget.
index1 number The first index.
index1 number The second index.

:swap_widgets (widget1, widget2[, recursive=false]) · 1 signal

Swap 2 widgets in a layout. If widget1 is present multiple time, only the first instance is swapped Signal: widget::swapped The arguments are both widgets and both (new) indexes. if the layouts not the same, then only widget::replaced will be emitted.

Parameters:

widget1 widget The first widget
widget2 widget The second widget
recursive boolean Dig in all compatible layouts to find the widget. (default false)

Returns:

boolean

Click to display more

Emit signals:

widget::swapped

self widget The layout.
widget1 widget index The first widget.
widget2 widget index The second widget.
index1 number The first index.
index1 number The second index.

:reset () · 1 signal

Reset a ratio layout. This removes all widgets from the layout.
Click to display more

Emit signals:

widget::reset

self widget The layout.

:setup {[args]} · Inherited from wibox.widget

Set a declarative widget hierarchy description. See The declarative layout system

Parameters:

args An array containing the widgets disposition

:add_button (button) · Inherited from wibox.widget

Add a new awful.button to this widget.

Parameters:

button awful.button The button to add.

:emit_signal_recursive (signal_name, ...) · Inherited from wibox.widget

Emit a signal and ensure all parent widgets in the hierarchies also forward the signal. This is useful to track signals when there is a dynamic set of containers and layouts wrapping the widget.

Parameters:

signal_name string
... Other arguments

:emit_signal (name, ...) · Inherited from gears.object

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().

: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

widget::layout_changed · Inherited from wibox.widget

When the layout (size) change. This signal is emitted when the previous results of :layout() and :fit() are no longer valid. Unless this signal is emitted, :layout() and :fit() must return the same result when called with the same arguments.

Arguments:

self table The current object instance itself.
lx number The horizontal position relative to the (0,0) position in the widget.
ly number The vertical position relative to the (0,0) position in the widget.
button number The button number.
mods table The modifiers (mod4, mod1 (alt), Control, Shift)
find_widgets_result The entry from the result of wibox.drawable:find_widgets for the position that the mouse hit.
- drawable wibox.drawable The drawable containing the widget.
- widget widget The widget being displayed.
- hierarchy wibox.hierarchy The hierarchy managing the widget’s geometry.
- x number An approximation of the X position that the widget is visible at on the surface.
- y number An approximation of the Y position that the widget is visible at on the surface.
- width number An approximation of the width that the widget is visible at on the surface.
- height number An approximation of the height that the widget is visible at on the surface.
- widget_width number The exact width of the widget in its local coordinate system.
- widget_height number The exact height of the widget in its local coordinate system.

Arguments:

self table The current object instance itself.
lx number The horizontal position relative to the (0,0) position in the widget.
ly number The vertical position relative to the (0,0) position in the widget.
button number The button number.
mods table The modifiers (mod4, mod1 (alt), Control, Shift)
find_widgets_result The entry from the result of wibox.drawable:find_widgets for the position that the mouse hit.
- drawable wibox.drawable The drawable containing the widget.
- widget widget The widget being displayed.
- hierarchy wibox.hierarchy The hierarchy managing the widget’s geometry.
- x number An approximation of the X position that the widget is visible at on the surface.
- y number An approximation of the Y position that the widget is visible at on the surface.
- width number An approximation of the width that the widget is visible at on the surface.
- height number An approximation of the height that the widget is visible at on the surface.
- widget_width number The exact width of the widget in its local coordinate system.
- widget_height number The exact height of the widget in its local coordinate system.

Arguments:

self table The current object instance itself.
find_widgets_result The entry from the result of wibox.drawable:find_widgets for the position that the mouse hit.
- drawable wibox.drawable The drawable containing the widget.
- widget widget The widget being displayed.
- hierarchy wibox.hierarchy The hierarchy managing the widget’s geometry.
- x number An approximation of the X position that the widget is visible at on the surface.
- y number An approximation of the Y position that the widget is visible at on the surface.
- width number An approximation of the width that the widget is visible at on the surface.
- height number An approximation of the height that the widget is visible at on the surface.
- widget_width number The exact width of the widget in its local coordinate system.
- widget_height number The exact height of the widget in its local coordinate system.

Arguments:

self table The current object instance itself.
find_widgets_result The entry from the result of wibox.drawable:find_widgets for the position that the mouse hit.
- drawable wibox.drawable The drawable containing the widget.
- widget widget The widget being displayed.
- hierarchy wibox.hierarchy The hierarchy managing the widget’s geometry.
- x number An approximation of the X position that the widget is visible at on the surface.
- y number An approximation of the Y position that the widget is visible at on the surface.
- width number An approximation of the width that the widget is visible at on the surface.
- height number An approximation of the height that the widget is visible at on the surface.
- widget_width number The exact width of the widget in its local coordinate system.
- widget_height number The exact height of the widget in its local coordinate system.

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Classes

Documentation

Module: wibox.layout.align

Usage:

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Constructors

Object properties

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Signals

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Module: `wibox.layout.align`