Module: `wibox.layout.ratio`

A layout filling all the available space.

Each widget is assigned a ratio (percentage) of the total space. Multiple methods are available to adjust this ratio.

Usage example

Usage:

local w = wibox.widget {
    generic_widget( 'first'  ),
    generic_widget( 'second' ),
    generic_widget( 'third'  ),
    layout  = wibox.layout.ratio.horizontal
}
w:adjust_ratio(2, 0.44, 0.33, 0.22)

Info:

Copyright: 2016 Emmanuel Lepage Vallee
Author: Emmanuel Lepage Vallee

Constructors

wibox.layout.ratio.horizontal (...)	Returns a new horizontal ratio layout.
wibox.layout.ratio.vertical (...)	Returns a new vertical ratio layout.

Object properties

spacing_widget	widget	The widget used to fill the spacing between the layout elements.
spacing	number	Add spacing between each layout widgets.
inner_fill_strategy	string	Set how the space of invisible or `0x0` sized widget is redistributed.
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

:inc_ratio (index, increment)	Increase the ratio of “widget”.
:inc_widget_ratio (widget, increment)	Increment the ratio of the first instance of `widget`.
:set_ratio (index, percent)	Set the ratio of the widget at position `index`.
:get_ratio (index) -> number	Get the ratio at `index`.
:set_widget_ratio (widget, percent)	Set the ratio of `widget` to `percent`.
:adjust_ratio (index, before, itself, after)	Update all widgets to match a set of a ratio.
:adjust_widget_ratio (widget, before, itself, after)	Update all widgets to match a set of a ratio.
:add (...)	Add some widgets to the given fixed layout.
:remove (index) -> boolean	Remove a widget from the layout.
:insert (index, widget)	Insert a new widget in the layout at position `index`.
:set (index, widget2) -> boolean	Set a widget at a specific index, replace the current one.
:replace_widget (widget, widget2[, recursive=false]) -> boolean	Replace the first instance of `widget` in the layout with `widget2`.
:swap (index1, index2) -> boolean	Swap 2 widgets in a layout.
:swap_widgets (widget1, widget2[, recursive=false]) -> boolean	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

Deprecated functions

wibox.layout.ratio.ajust_ratio [deprecated]	Update all widgets to match a set of a ratio.
wibox.layout.ratio.ajust_widget_ratio [deprecated]	Update all widgets to match a set of a ratio.

Constructors

wibox.layout.ratio.horizontal (...)

Returns a new horizontal ratio layout. A ratio layout shares the available space. equally among all widgets. Widgets can be added via :add(widget).

Parameters:

... widget Widgets that should be added to the layout.

wibox.layout.ratio.vertical (...)

Returns a new vertical ratio layout. A ratio layout shares the available space. equally among all widgets. Widgets can be added via :add(widget).

Parameters:

... widget Widgets that should be added to the layout.

Object properties

spacing_widget widget · 1 signal

The widget used to fill the spacing between the layout elements.

By default, no widget is used.

Usage example

Usage:

-- Use the separator widget directly
local w1 = wibox.widget {
    spacing        = 10,
    spacing_widget = wibox.widget.separator,
    layout         = wibox.layout.ratio.horizontal
}
-- Use a standard declarative widget construct
local w2 = wibox.widget {
    spacing = 10,
    spacing_widget = {
        color  = '#00ff00',
        shape  = gears.shape.circle,
        widget = wibox.widget.separator,
    },
    layout = wibox.layout.ratio.horizontal
}
-- Use composed widgets
local w3 = wibox.widget {
    spacing = 10,
    spacing_widget = {
        {
            text   = 'F',
            widget = wibox.widget.textbox,
        },
        bg     = '#ff0000',
        widget = wibox.container.background,
    },
    layout = wibox.layout.ratio.horizontal
}
-- Use negative spacing to create a powerline effect
local w4 = wibox.widget {
    spacing = -12,
    spacing_widget = {
        color  = '#ff0000',
        shape  = gears.shape.powerline,
        widget = wibox.widget.separator,
    },
    layout = wibox.layout.ratio.horizontal
}

Click to display more

Emit signals:

property::spacing_widget When the spacing_widget value changes.

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

spacing number · 1 signal

Add spacing between each layout widgets.

Usage example

Type constraints:

spacing number Spacing between widgets.

Usage:

for i=1, 5 do
    local w = wibox.widget {
        first,
        second,
        third,
        spacing = i*3,
        layout  = wibox.layout.ratio.horizontal
    }
end

Click to display more

Emit signals:

property::spacing When the spacing value changes.

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

inner_fill_strategy string · 1 signal

Set how the space of invisible or 0x0 sized widget is redistributed.

Possible values:

“default”: Honor the ratio and do not redistribute the space.
“justify”: Distribute the space among remaining widgets.
“center”: Squash remaining widgets and leave equal space on both side.
“inner_spacing”: Add equal spacing between all widgets.
“spacing”: Add equal spacing between all widgets and on the outside.
“left”: Squash remaining widgets and leave empty space on the left.
“right”: Squash remaining widgets and leave empty space on the right.

Usage example

Type constraints:

inner_fill_strategy string One of the value listed above.

Click to display more

Emit signals:

property::inner_fill_strategy When the inner_fill_strategy value changes.

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

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

:inc_ratio (index, increment)

Increase the ratio of “widget”. If the increment produce an invalid ratio (not between 0 and 1), the method do nothing.

Usage example

Parameters:

index number The widget index to change
increment number An floating point value between -1 and 1 where the end result is within 0 and 1

Usage:

local ret = wibox.layout.fixed.vertical()
local w = wibox.widget {
    first,
    second,
    third,
    layout  = wibox.layout.ratio.horizontal
}
for i=1, 5 do
    w:inc_ratio(2, 0.1)
end

:inc_widget_ratio (widget, increment)

Increment the ratio of the first instance of widget. If the increment produce an invalid ratio (not between 0 and 1), the method do nothing.

Parameters:

widget widget The widget to adjust
increment number An floating point value between -1 and 1 where the end result is within 0 and 1

:set_ratio (index, percent)

Set the ratio of the widget at position index.

Parameters:

index number The index of the widget to change
percent number An floating point value between 0 and 1

:get_ratio (index) -> number

Get the ratio at index.

Parameters:

index number The widget index to query

Returns:

number

:set_widget_ratio (widget, percent)

Set the ratio of widget to percent.

Parameters:

widget widget The widget to adjust.
percent number A floating point value between 0 and 1.

:adjust_ratio (index, before, itself, after)

Update all widgets to match a set of a ratio. The sum of before, itself and after must be 1 or nothing will be done.

Usage example

Parameters:

index number The index of the widget to change
before number The sum of the ratio before the widget
itself number The ratio for “widget”
after number The sum of the ratio after the widget

Usage:

local ret = wibox.layout.fixed.vertical()
local w = wibox.widget {
    first,
    second,
    third,
    layout  = wibox.layout.ratio.horizontal
}
local values = {
    {0.25, 0.50, 0.25},
    {0.33, 0.55, 0.12},
    {0.123, 0.456, 0.789},
    {0.123, 0, 0.789},
    {0, 1, 0},
}
for i=1, 5 do
    w:adjust_ratio(2, unpack(values[i]))
end

:adjust_widget_ratio (widget, before, itself, after)

Update all widgets to match a set of a ratio.

Parameters:

widget widget The widget to adjust
before number The sum of the ratio before the widget
itself number The ratio for “widget”
after number The sum of the ratio after the widget

:add (...) · 1 signal

Add some widgets to the given fixed layout.

Parameters:

... widget Widgets that should be added (must at least be one)

Click to display more

Emit signals:

widget::added All new widgets are passed in the parameters.

self widget The layout.

:remove (index) -> boolean · 1 signal

Remove a widget from the layout.

Parameters:

index number The widget index to remove

Returns:

boolean

Click to display more

Emit signals:

widget::removed

self widget The fixed layout.
widget widget index The removed widget.
index number The removed index.

:insert (index, widget) · 1 signal

Insert a new widget in the layout at position index.

Parameters:

index number The position.
widget widget The widget.

Click to display more

Emit signals:

widget::inserted

self widget The ratio layout.
widget widget index The inserted widget.
count number The widget count.

:set (index, widget2) -> boolean · 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]) -> boolean · 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) -> boolean · 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]) -> boolean · 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.

Deprecated functions

wibox.layout.ratio.ajust_ratio [deprecated]

Update all widgets to match a set of a ratio.

This method is kept for backwards compatibility, please use :adjust_ratio instead.

Parameters:

index number The index of the widget to change
index number The index of the widget to change
before number The sum of the ratio before the widget
before number The sum of the ratio before the widget
itself number The ratio for “widget”
itself number The ratio for “widget”
after number The sum of the ratio after the widget
after number The sum of the ratio after the widget

Parameters:

widget widget The widget to adjust
before number The sum of the ratio before the widget
before number The sum of the ratio before the widget
itself number The ratio for “widget”
itself number The ratio for “widget”
after number The sum of the ratio after the widget
after number The sum of the ratio after the widget

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Contents

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Declarative rules

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Utility libraries

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Libraries

Sample files

Classes

Documentation

Module: wibox.layout.ratio

Usage:

Info:

Constructors

Object properties

Object methods

Signals

Deprecated functions

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Module: `wibox.layout.ratio`