Class wibox.widget.piechart

Display percentage in a circle.

Note that this widget makes no attempts to prevent overlapping labels or labels drawn outside of the widget boundaries.

Usage example

Usage:

    wibox.widget {
        data_list = {
            { 'L1', 100 },
            { 'L2', 200 },
            { 'L3', 300 },
        },
        border_width = 1,
        colors = {
            beautiful.bg_normal,
            beautiful.bg_highlight,
            beautiful.border_color,
        },
        widget = wibox.widget.piechart
    }
    

Info:

  • Copyright: 2012 Emmanuel Lepage Vallee
  • Author: Emmanuel Lepage Valle

Object properties

wibox.widget.piechart.data_list The pie chart data list.
wibox.widget.piechart.data The pie chart data.
wibox.widget.piechart.border_color The border color.
wibox.widget.piechart.border_width The pie elements border width.
wibox.widget.piechart.colors The pie chart colors.
wibox.widget.piechart.display_labels If the pie chart has labels.
wibox.widget.piechart.forced_height Force a widget height.
wibox.widget.piechart.forced_width Force a widget width.
wibox.widget.piechart.opacity The widget opacity (transparency).
wibox.widget.piechart.visible The widget visibility.

Signals

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

Theme variables

beautiful.piechart_border_color The border color.
beautiful.piechart_border_width The pie elements border width.
beautiful.piechart_colors The pie chart colors.

Methods

wibox.widget.piechart:index (widget[, recursive[, ...]]) Get a widex index.
wibox.widget.piechart:get_all_children () Get all direct and indirect children widgets.
wibox.widget.piechart:setup (args) Set a declarative widget hierarchy description.
wibox.widget.piechart:buttons (_buttons) Set/get a widget’s buttons.
wibox.widget.piechart:emit_signal_recursive (signal_name, ...) Emit a signal and ensure all parent widgets in the hierarchies also forward the signal.
wibox.widget.piechart:disconnect_signal (name, func) Disconnect to a signal.
wibox.widget.piechart:emit_signal (name, ...) Emit a signal.
wibox.widget.piechart:connect_signal (name, func) Connect to a signal.
wibox.widget.piechart:weak_connect_signal (name, func) Connect to a signal weakly.


Object properties

wibox.widget.piechart.data_list
The pie chart data list.

Type:

  • data_list table Sorted table where each entry has a label as its first value and a number as its second value.
wibox.widget.piechart.data
The pie chart data.

Type:

  • data table Labels as keys and number as value.
wibox.widget.piechart.border_color
The border color. If none is set, it will use current foreground (text) color.

Usage example

Type:

  • color

See also:

wibox.widget.piechart.border_width
The pie elements border width.

Usage example

Type:

  • border_width number (default 1)
wibox.widget.piechart.colors
The pie chart colors. If no color is set, only the border will be drawn. If less colors than required are set, colors will be re-used in order.

Type:

  • colors table A table of colors, one for each elements

See also:

wibox.widget.piechart.display_labels
If the pie chart has labels.

Usage example

Type:

  • boolean (default true)
wibox.widget.piechart.forced_height
Force a widget height.

Type:

  • height number or nil The height (nil for automatic)
wibox.widget.piechart.forced_width
Force a widget width.

Type:

  • width number or nil The width (nil for automatic)
wibox.widget.piechart.opacity
The widget opacity (transparency).

Type:

  • opacity number The opacity (between 0 and 1) (default 1)
wibox.widget.piechart.visible
The widget visibility.

Type:

  • boolean

Signals

widget::layout_changed
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.

See also:

widget::redraw_needed
When the widget content changed. This signal is emitted when the content of the widget changes. The widget will be redrawn, it is not re-layouted. Put differently, it is assumed that :layout() and :fit() would still return the same results as before.

See also:

button::press
When a mouse button is pressed over the widget.

Arguments:

  • 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.

See also:

button::release
When a mouse button is released over the widget.

Arguments:

  • 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.

See also:

mouse::enter
When the mouse enter a widget.

Arguments:

  • 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.

See also:

mouse::leave
When the mouse leave a widget.

Arguments:

  • 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.

See also:

Theme variables

beautiful.piechart_border_color
The border color. If none is set, it will use current foreground (text) color.

Type:

  • color

See also:

beautiful.piechart_border_width
The pie elements border width.

Type:

  • border_width number (default 1)
beautiful.piechart_colors
The pie chart colors. If no color is set, only the border will be drawn. If less colors than required are set, colors will be re-used in order.

Type:

  • colors table A table of colors, one for each elements

See also:

Methods

wibox.widget.piechart:index (widget[, recursive[, ...]])
Get a widex index.
  • widget The widget to look for
  • recursive Also check sub-widgets (optional)
  • ... Aditional widgets to add at the end of the "path" (optional)

Returns:

  1. The index
  2. The parent layout
  3. The path between "self" and "widget"
wibox.widget.piechart:get_all_children ()
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.

Returns:

    table The children
wibox.widget.piechart:setup (args)
Set a declarative widget hierarchy description. See The declarative layout system
  • args An array containing the widgets disposition
wibox.widget.piechart:buttons (_buttons)
Set/get a widget’s buttons.
  • _buttons The table of buttons that should bind to the widget.
wibox.widget.piechart:emit_signal_recursive (signal_name, ...)
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.
  • signal_name string
  • ... Other arguments
wibox.widget.piechart:disconnect_signal (name, func)
Disconnect to a signal.
  • name string The name of the signal
  • func function The callback that should be disconnected
wibox.widget.piechart:emit_signal (name, ...)
Emit a signal.
  • 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()
wibox.widget.piechart:connect_signal (name, func)
Connect to a signal.
  • name string The name of the signal
  • func function The callback to call when the signal is emitted
wibox.widget.piechart:weak_connect_signal (name, func)
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.

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