Module: `wibox.container.background`

A container capable of changing the background color, foreground color and widget shape.

Usage example

Info:

Copyright: 2010 Uli Schlachter
Author: Uli Schlachter

Constructors

wibox.container.background ([widget[, bg[, shape]]])

Returns a new background container.

Object properties

widget	widget	The widget displayed in the background widget.
bg	color	The background color/pattern/gradient to use.
fg	color	The foreground (text) color/pattern/gradient to use.
shape	gears.shape or function	The background shape.
border_width	number	Add a border of a specific width.
border_color	color	Set the color for the border.
border_strategy	string	How the border width affects the contained widget.
bgimage	string or surface or function	The background image to use.
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

Deprecated object properties

shape_border_width	number	When a shape is set, also draw a border.
shape_border_color	color	When a shape is set, also draw a border.

Object methods

:set_shape (shape)	Set the background shape.
: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.container.background ([widget[, bg[, shape]]])

Returns a new background container.

A background container applies a background and foreground color to another widget.

Parameters:

widget widget The widget to display. (optional)
bg color The background to use for that widget. (optional)
shape gears.shape or function A gears.shape compatible shape function (optional)

Object properties

widget widget

The widget displayed in the background widget.

Type constraints:

widget widget The widget to be disaplayed inside of the background area.

bg color · 1 signal

The background color/pattern/gradient to use.

Usage example

Type constraints:

bg color A color string, pattern or gradient

Usage:

local text_widget = {
    text   = 'Hello world!',
    widget = wibox.widget.textbox
}
parent : setup {
    {
        text_widget,
        bg     = '#ff0000',
        widget = wibox.container.background
    },
    {
        text_widget,
        bg     = '#00ff00',
        widget = wibox.container.background
    },
    {
        text_widget,
        bg     = '#0000ff',
        widget = wibox.container.background
    },
    spacing = 10,
    layout  = wibox.layout.fixed.vertical
}

Click to display more

Emit signals:

property::bg When the bg value changes.

self wibox.container.background The object which changed (useful when connecting many object to the same callback).
new_value bg The new value affected to the property.

fg color · 1 signal

The foreground (text) color/pattern/gradient to use.

Usage example

Type constraints:

fg color A color string, pattern or gradient

Usage:

local text_widget = {
    text   = 'Hello world!',
    widget = wibox.widget.textbox
}
parent : setup {
    {
        text_widget,
        fg     = '#ff0000',
        widget = wibox.container.background
    },
    {
        text_widget,
        fg     = '#00ff00',
        widget = wibox.container.background
    },
    {
        text_widget,
        fg     = '#0000ff',
        widget = wibox.container.background
    },
    spacing = 10,
    layout  = wibox.layout.fixed.vertical
}

Click to display more

Emit signals:

property::fg When the fg value changes.

self wibox.container.background The object which changed (useful when connecting many object to the same callback).
new_value fg The new value affected to the property.

shape gears.shape or function

The background shape.

Use set_shape to set additional shape paramaters.

Usage example

Type constraints:

shape gears.shape or function A function taking a context, width and height as arguments

Usage:

parent : setup {
    {
        -- Adding a shape without margin may result in cropped output
        {
            text   = 'Hello world!',
            widget = wibox.widget.textbox
        },
        shape              = gears.shape.hexagon,
        bg                 = beautiful.bg_normal,
        shape_border_color = beautiful.border_color,
        shape_border_width = beautiful.border_width,
        widget             = wibox.container.background
    },
    {
        -- To solve this, use a margin
        {
            {
                text   = 'Hello world!',
                widget = wibox.widget.textbox
            },
            left   = 10,
            right  = 10,
            top    = 3,
            bottom = 3,
            widget = wibox.container.margin
        },
        shape        = gears.shape.hexagon,
        bg           = beautiful.bg_normal,
        border_color = beautiful.border_color,
        border_width = beautiful.border_width,
        widget       = wibox.container.background
    },
    spacing = 10,
    layout  = wibox.layout.fixed.vertical
}

border_width number · 1 signal

Add a border of a specific width.

If the shape is set, the border will also be shaped.

See wibox.container.background.shape for an usage example.

Type constraints:

width number The border width. (default 0)

Emit signals:

property::border_width When the border_width value changes.

self wibox.container.background The object which changed (useful when connecting many object to the same callback).
new_value width The new value affected to the property.

border_color color · 1 signal · 1 theme variable

Set the color for the border.

See wibox.container.background.shape for an usage example.

Type constraints:

fg color The border color, pattern or gradient (default self._private.foreground)

Emit signals:

property::border_color When the border_color value changes.

self wibox.container.background The object which changed (useful when connecting many object to the same callback).
new_value fg The new value affected to the property.

Consumed theme variables:

Theme variable	Usage
`beautiful.fg_normal`	Fallback when ‘fg’ and border_color aren’t set.

border_strategy string

How the border width affects the contained widget.

The valid values are:

none: Just apply the border, do not affect the content size (default).
inner: Squeeze the size of the content by the border width.

bgimage string or surface or function

The background image to use.

If image is a function, it will be called with (context, cr, width, height) as arguments. Any other arguments passed to this method will be appended.

Type constraints:

image string, surface or function A background image or a function

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.

Deprecated object properties

shape_border_width number

When a shape is set, also draw a border.

See wibox.container.background.shape for an usage example.

Type constraints:

width number The border width

Type constraints:

fg color The border color, pattern or gradient (default self._private.foreground)

Consumed theme variables:

Theme variable	Usage
`beautiful.fg_normal`	Fallback when ‘fg’ and border_color aren’t set.

Object methods

:set_shape (shape) · 1 signal

Set the background shape.

Any other arguments will be passed to the shape function.

Parameters:

shape gears.shape or function A function taking a context, width and height as arguments

Emit signals:

property::set_shape When the set_shape value changes.

self wibox.container.background The object which changed (useful when connecting many object to the same callback).
new_value shape The new value affected to the property.

: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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Utility libraries

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Sample files

Classes

Documentation

Module: wibox.container.background

Info:

Constructors

Object properties

Deprecated object properties

Object methods

Signals

Constructors

Parameters:

Object properties

Type constraints:

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Module: `wibox.container.background`