Class wibox.layout.manual - awesome API documentation

# Class `wibox.layout.manual`

A layout with widgets added at specific positions.

Use cases include desktop icons, complex custom composed widgets, a floating client layout and fine grained control over the output.

### Usage:

    local w1, w2 = generic_widget(), generic_widget()
    w1.point  = {x=75,y=5}
    w1.text   = 'first'
    w1.forced_width = 50
    w2.text = 'second'
    w2.point  = function(geo, args)
        -- Bottom right
        return {
            x = args.parent.width-geo.width,
            y = args.parent.height-geo.height
        }
    end
    wibox.layout {
        w1,
        w2,
        generic_widget('third'),
        layout  = wibox.layout.manual
    }

### Info:

- Copyright: 2016 Emmanuel Lepage Vallee
- Author: Emmanuel Lepage Vallee

## Functions

manual_layout:add_at (widget, point) | Add a widget at a specific point.
manual_layout:move (index, point) | Move a widget (by index).
manual_layout:move_widget (widget, point) | Move a widget.

## Object properties

forced_height | Force a widget height.
forced_width | Force a widget width.
opacity | The widget opacity (transparency).
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.

## Methods

wibox.layout.manual:add (layout, ...) | Add some widgets to the given stack layout
wibox.layout.manual:remove (The) | Remove a widget from the layout
wibox.layout.manual:insert (index, widget) | Insert a new widget in the layout at position `index`
wibox.layout.manual:remove_widgets (widget) | Remove one or more widgets from the layout The last parameter can be a boolean, forcing a recursive seach of the widget(s) to remove.
wibox.layout.manual:get_all_children () | Get all direct and indirect children widgets.
wibox.layout.manual:setup (args) | Set a declarative widget hierarchy description.
wibox.layout.manual:buttons (_buttons) | Set/get a widget's buttons.
wibox.layout.manual:emit_signal_recursive (signal_name, ...) | Emit a signal and ensure all parent widgets in the hierarchies also forward the signal.
wibox.layout.manual:emit_signal (name, ...) | Emit a signal.
wibox.layout.manual:connect_signal (name, func) | Connect to a signal.
wibox.layout.manual:weak_connect_signal (name, func) | Connect to a signal weakly.

## Functions

Methods

manual_layout:add_at (widget, point)
  Add a widget at a specific point.

  The point can either be a function or a table. The table follow the generic geometry format used elsewhere in Awesome.

  - x: The horizontal position.
  - y: The vertical position.
  - width: The width.
  - height: The height.

  If a function is used, it follows the same prototype as awful.placement functions.

  - geo:
    - x: The horizontal position (always 0).
    - y: The vertical position (always 0).
    - width: The width.
    - height: The height.
    - geometry: A function to get or set the geometry (for compatibility). The function is compatible with the awful.placement prototype.
  - args:
    - parent The layout own geometry
      - x: The horizontal position (always 0).
      - y: The vertical position (always 0).
      - width: The width.
      - height: The height.
      - geometry: A function to get or set the geometry (for compatibility) The function is compatible with the awful.placement prototype.

  - widget widget The widget.
  - point table or function Either an `{x=x,y=y}` table or a function returning the new geometry.

  ### Usage:

      local l = wibox.layout {
          layout  = wibox.layout.manual
      }
      --
      -- Option 1: Set the point directly in the widget
      local w1        = generic_widget()
      w1.point        = {x=75, y=5}
      w1.text         = 'first'
      w1.forced_width = 50
      l:add(w1)
      --
      -- Option 2: Set the point directly in the widget as a function
      local w2  = generic_widget()
      w2.text   = 'second'
      w2.point  = function(geo, args)
          return {
              x = args.parent.width  - geo.width,
              y = 0
          }
      end
      l:add(w2)
      --
      -- Option 3: Set the point directly in the widget as an awful.placement
      -- function.
      local w3 = generic_widget()
      w3.text  = 'third'
      w3.point = awful.placement.bottom_right
      l:add(w3)
      --
      -- Option 4: Use :add_at instead of using the .point property. This works
      -- with all 3 ways to define the point.
      -- function.
      local w4 = generic_widget()
      w4.text  = 'fourth'
      l:add_at(w4, awful.placement.centered + awful.placement.maximize_horizontally)

manual_layout:move (index, point)
  Move a widget (by index).
  - index number The widget index.
  - point table or function A new point value.

  ### See also:

  add_at
manual_layout:move_widget (widget, point)
  Move a widget.

  - widget widget The widget.
  - point table or function A new point value.

  ### See also:

  add_at

  ### Usage:

      local l = wibox.layout {
          layout  = wibox.layout.manual
      }
      --
      local w1        = generic_widget()
      w1.point        = {x=75, y=5}
      w1.text         = 'first'
      w1.forced_width = 50
      l:add(w1)
      l:move_widget(w1, awful.placement.bottom_right)

## Object properties

forced_height
  Force a widget height.

  ### Type:

  - height number or nil The height (`nil` for automatic)
forced_width
  Force a widget width.

  ### Type:

  - width number or nil The width (`nil` for automatic)
opacity
  The widget opacity (transparency).

  ### Type:

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

  widget::layout_changed
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:

  mouse
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
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
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:

  mouse

## Methods

wibox.layout.manual:add (layout, ...)
  Add some widgets to the given stack layout
  - layout The layout you are modifying.
  - ... widget Widgets that should be added
wibox.layout.manual:remove (The)
  Remove a widget from the layout
  - The index widget index to remove

  ### Returns:

  boolean index If the operation is successful
wibox.layout.manual:insert (index, widget)
  Insert a new widget in the layout at position `index`
  - index number The position
  - widget The widget

  ### Returns:

  boolean If the operation is successful
wibox.layout.manual:remove_widgets (widget)
  Remove one or more widgets from the layout The last parameter can be a boolean, forcing a recursive seach of the widget(s) to remove.
  - widget ... Widgets that should be removed (must at least be one)

  ### Returns:

  boolean If the operation is successful
wibox.layout.manual: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.layout.manual:setup (args)
  Set a declarative widget hierarchy description. See The declarative layout system
  - args An array containing the widgets disposition
wibox.layout.manual:buttons (_buttons)
  Set/get a widget's buttons.
  - _buttons The table of buttons that should bind to the widget.
wibox.layout.manual: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.layout.manual: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.layout.manual: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.layout.manual: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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