Module: `wibox.container.arcchart`

A circular chart (arc chart).

It can contain a central widget (or not) and display multiple values.

Usage example

Class Hierarchy

gears.object
- wibox.widget.base
- - wibox.container.arcchart

Info:

Copyright: 2013 Emmanuel Lepage Vallee
Originally authored by: Emmanuel Lepage Vallee <[email protected]>
(Full contributors list available on our github project)

Constructors

wibox.container.arcchart ([widget])

Returns a new arcchart layout.

Object properties

widget	widget	The widget to wrap in a radial proggressbar.
paddings	table or number	The padding between the outline and the progressbar.
border_color	color	The border background color.
colors	table	The arcchart values foreground colors.
border_width	number	The border width.
min_value	number	The minimum value.
max_value	number	The maximum value.
bg	color	The radial background.
value	number	The value.
values	table	The values.
rounded_edge	boolean	If the chart has rounded edges.
thickness	number	The arc thickness.
start_angle	number	The (radiant) angle where the first value start.
children	table	Get or set the children elements.	Inherited from wibox.widget.base
all_children	table	Get all direct and indirect children widgets.	Inherited from wibox.widget.base
forced_height	number or nil	Force a widget height.	Inherited from wibox.widget.base
forced_width	number or nil	Force a widget width.	Inherited from wibox.widget.base
opacity	number	The widget opacity (transparency).	Inherited from wibox.widget.base
visible	boolean	The widget visibility.	Inherited from wibox.widget.base
buttons	table	The widget buttons.	Inherited from wibox.widget.base

Object methods

:reset ()	Reset this layout.
:add_button (button)	Add a new awful.button to this widget.	Inherited from wibox.widget.base
:emit_signal_recursive (signal_name, ...)	Emit a signal and ensure all parent widgets in the hierarchies also forward the signal.	Inherited from wibox.widget.base
:index (widget[, recursive[, ...]]) -> (number, widget, table)	Get the index of a widget.	Inherited from wibox.widget.base
: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
:disconnect_signal (name, func)	Disonnect from a signal.	Inherited from gears.object
:emit_signal (name, ...)	Emit a signal.	Inherited from gears.object

Theme variables

beautiful.arcchart_border_color	color	The progressbar border background color.
beautiful.arcchart_color	color	The progressbar foreground color.
beautiful.arcchart_border_width	number	The progressbar border width.
beautiful.arcchart_paddings	table or number	The padding between the outline and the progressbar.
beautiful.arcchart_thickness	number	The arc thickness.

Signals

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

Constructors

wibox.container.arcchart ([widget])

Returns a new arcchart layout.

Parameters:

widget wibox.widget The widget to display. (optional)

Object properties

widget widget

The widget to wrap in a radial proggressbar.

Type constraints:

widget widget The widget

paddings table or number · 1 signal · 1 theme variable

The padding between the outline and the progressbar.

Usage example

Type constraints:

paddings A number or a table
- top number (default 0)
- bottom number (default 0)
- left number (default 0)
- right number (default 0)

Click to display more

Emit signals:

property::paddings When the paddings changes.

self widget The object being modified.
paddings table The new paddings.

Consumed theme variables:

Theme variable	Usage
beautiful.arcchart_paddings	Fallback value when the object paddings isn't specified.

border_color color · 1 signal · 1 theme variable

The border background color.
Click to display more

Emit signals:

property::border_color When the border_color value changes.

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

Consumed theme variables:

Theme variable	Usage
beautiful.arcchart_border_color	Fallback when border_color isn't set.

colors table · 1 signal · 1 theme variable

The arcchart values foreground colors.

Type constraints:

values table An ordered set of colors for each value in arcchart.

Click to display more

Emit signals:

property::colors When the colors value changes.

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

Consumed theme variables:

Theme variable	Usage
`beautiful.arcchart_colors`	Fallback when colors isn't set.

border_width number · 1 signal · 1 theme variable

The border width.

Usage example

Click to display more

Emit signals:

property::border_width When the border_width value changes.

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

Consumed theme variables:

Theme variable	Usage
beautiful.arcchart_border_width	Fallback when border_width isn't set.

min_value number · 1 signal

The minimum value.
Click to display more

Emit signals:

property::min_value When the min_value value changes.

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

max_value number · 1 signal

The maximum value.
Click to display more

Emit signals:

property::max_value When the max_value value changes.

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

bg color · 1 signal · 1 theme variable

The radial background.

Usage example

Emit signals:

property::bg When the bg value changes.

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

Consumed theme variables:

Theme variable	Usage
`beautiful.arcchart_bg`	Fallback when bg isn't set.

value number · 1 signal

The value.

Usage example

Type constraints:

value number Between minvalue and maxvalue

Emit signals:

property::value When the value value changes.

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

values table · 1 signal

The values. The arcchart is designed to display multiple values at once. Each will be shown in table order.

Type constraints:

values table An ordered set of values.

Emit signals:

property::values When the values value changes.

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

rounded_edge boolean · 1 signal

If the chart has rounded edges.

Usage example

Click to display more

Emit signals:

property::rounded_edge When the rounded_edge value changes.

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

thickness number · 1 signal

The arc thickness.

Usage example

Click to display more

Emit signals:

property::thickness When the thickness value changes.

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

start_angle number · 1 signal

The (radiant) angle where the first value start.

Usage example

Type constraints:

start_angle number A number between 0 and 2*math.pi (default math.pi)

Click to display more

Emit signals:

property::start_angle When the start_angle value changes.

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

children table · Inherited from wibox.widget.base

Get or set the children elements.

Type constraints:

children table The children.

all_children table · Inherited from wibox.widget.base

Get all direct and indirect children widgets. This will scan all containers recursively to find widgets Warning: This method it prone to stack overflow if there is a loop in the widgets hierarchy. A hierarchy loop is when a 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.base

Force a widget height.

Type constraints:

height number or nil The height (nil for automatic)

forced_width number or nil · Inherited from wibox.widget.base

Force a widget width.

Type constraints:

width number or nil The width (nil for automatic)

opacity number · Inherited from wibox.widget.base

The widget opacity (transparency).

Type constraints:

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

visible boolean · Inherited from wibox.widget.base

The widget visibility.

buttons table · Inherited from wibox.widget.base

The widget buttons.

The table contains a list of awful.button objects.

Object methods

:reset ()

Reset this layout. The widget will be removed and the rotation reset.

:add_button (button) · Inherited from wibox.widget.base

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.base

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.

Note that this function has some flaws:

The signal is only forwarded once the widget tree has been built. This happens after all currently scheduled functions have been executed. Therefore, it will not start to work right away.
In case the widget is present multiple times in a single widget tree, this function will also forward the signal multiple times (once per upward tree path).
If the widget is removed from the widget tree, the signal is still forwarded for some time, similar to the first case.

Parameters:

signal_name string
... Other arguments

:index (widget[, recursive[, ...]]) -> (number, widget, table) · Inherited from wibox.widget.base

Get the index of a widget.

Parameters:

widget widget The widget to look for.
recursive boolean Recursively check accross the sub-widgets hierarchy. (optional)
... widget Additional widgets to add at the end of the sub-widgets hierarchy "path". (optional)

Returns:

number The widget index.
widget The parent widget.
table The hierarchy path between "self" and "widget".

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

Connect to a signal.

Usage example output:

In slot [obj]   nil nil nil
In slot [obj]   foo bar 42

Parameters:

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

Usage:

local o = gears.object{}
-- Function can be attached to signals
local function slot(obj, a, b, c)
    print("In slot", obj, a, b, c)
end
o:connect_signal("my_signal", slot)
-- Emitting can be done without arguments. In that case, the object will be
-- implicitly added as an argument.
o:emit_signal "my_signal"
-- It is also possible to add as many random arguments are required.
o:emit_signal("my_signal", "foo", "bar", 42)
-- Finally, to allow the object to be garbage collected (the memory freed), it
-- is necessary to disconnect the signal or use weak_connect_signal
o:disconnect_signal("my_signal", slot)
-- This time, the slot wont be called as it is no longer connected.
o:emit_signal "my_signal"

: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.

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

Disonnect from a signal.

Parameters:

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

: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()

Theme variables

beautiful.arcchart_border_color color

The progressbar border background color.

beautiful.arcchart_color color

The progressbar foreground color.

beautiful.arcchart_border_width number

The progressbar border width.

beautiful.arcchart_paddings table or number

The padding between the outline and the progressbar.

Type constraints:

paddings A number or a table
- top number (default 0)
- bottom number (default 0)
- left number (default 0)
- right number (default 0)

beautiful.arcchart_thickness number

The arc thickness.

Signals

widget::layout_changed · Inherited from wibox.widget.base

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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Module: wibox.container.arcchart

Class Hierarchy

Info:

Constructors

Object properties

Object methods

Theme variables

Signals

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Module: `wibox.container.arcchart`