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Jake Stanger edited this page Jun 29, 2023 · 15 revisions

Allows you to compose custom modules consisting of multiple widgets, including popups. Labels can display dynamic content from scripts, and buttons can interact with the bar or execute commands on click.

If you only intend to run a single script, prefer the script module, or label if you only need a single text label.

Custom module with a button on the bar, and the popup open. The popup contains a header, shutdown button and restart button.

Configuration

Type: custom

This module can be quite fiddly to configure as you effectively have to build a tree of widgets by hand. It is well worth looking at the examples.

Widget

There are many widget types, each with their own config options. You can think of these like HTML elements and their attributes.

Every widget has the following options available; type is mandatory. You can also add common module-level options on a widget.

Name Type Default Description
type 'box' or 'label' or 'button' or 'image' or 'slider' or 'progress' null Type of GTK widget to create.
name string null Widget name.
class string null Widget class name.

Box

A container to place nested widgets inside.

Type: box

Name Type Default Description
orientation 'horizontal' or 'vertical' (shorthand: 'h' or 'v') 'horizontal' Whether child widgets should be horizontally or vertically added.
widgets Widget[] [] List of widgets to add to this box.

Label

A text label. Pango markup is supported.

Type label

Name Type Default Description
label Dynamic String null Widget text label. Pango markup and embedded scripts are supported.

Button

A clickable button, which can run a command when clicked.

Type button

Name Type Default Description
label Dynamic String null Widget text label. Pango markup and embedded scripts are supported.
on_click string [command] null Command to execute. More on this below.

Image

An image or icon from disk or http.

Type image

Name Type Default Description
src image via Dynamic String null Image source.
size integer null Width/height of the image. Aspect ratio is preserved.

Slider

A draggable slider.

Type: slider

Note that on_change will provide the floating point value as an argument. If your input program requires an integer, you will need to round it.

Name Type Default Description
orientation 'horizontal' or 'vertical' (shorthand: 'h' or 'v') 'horizontal' Orientation of the slider.
value Script null Script to run to get the slider value. Output must be a valid number.
on_change string [command] null Command to execute when the slider changes. More on this below.
min float 0 Minimum slider value.
max float 100 Maximum slider value.
step float - The increment to change when scrolling with the mouse wheel. If left blank, will use the default determined by the environment.
length integer null Slider length. GTK will automatically size if left unset.
show_label boolean true Whether to show the value label above the slider.

The example slider widget below shows a volume control for MPC, which updates the server when changed, and polls the server for volume changes to keep the slider in sync.

$slider = { 
    type = "custom" 
    bar = [
        {
            type = "slider"
            length = 100
            max = 100
            on_change="!mpc volume ${0%.*}"
            value = "200:mpc volume | cut -d ':' -f2 | cut -d '%' -f1"
        }
    ] 
}

Progress

A progress bar.

Type: progress

Note that value expects a numeric value between 0-max as output.

Name Type Default Description
orientation 'horizontal' or 'vertical' (shorthand: 'h' or 'v') horizontal Orientation of the progress bar.
value Script null Script to run to get the progress bar value. Output must be a valid percentage.
max float 100 Maximum progress bar value.
length integer null Slider length. GTK will automatically size if left unset.

The example below shows progress for the current playing song in MPD, and displays the elapsed/length timestamps as a label above:

$progress = { 
    type = "custom" 
    bar = [
        {
            type = "progress"
            value = "500:mpc | sed -n 2p | awk '{ print $4 }' | grep -Eo '[0-9]+' || echo 0"
            label = "{{500:mpc | sed -n 2p | awk '{ print $3 }'}} elapsed"
            length = 200
        }
    ] 
}

Label Attributes

ℹ This is different to the label widget, although applies to it.

Any widgets with a label attribute support embedded scripts, meaning you can interpolate text from scripts to dynamically show content.

This can be done by including scripts in {{double braces}} using the shorthand script syntax.

For example, the following label would output your system uptime, updated every 30 seconds.

Uptime: {{30000:uptime -p | cut -d ' ' -f2-}}

Both polling and watching mode are supported. For more information on script syntax, see here.

Commands

Buttons can execute commands that interact with the bar, as well as any arbitrary shell command.

To execute shell commands, prefix them with an !. For example, if you want to run ~/.local/bin/my-script.sh on click, you'd set on_click to !~/.local/bin/my-script.sh.

Some widgets provide a value when they run the command, such as slider. This is passed as an argument and can be accessed using $0.

The following bar commands are supported:

  • popup:toggle
  • popup:open
  • popup:close

XML is arguably better-suited and easier to read for this sort of markup, but currently is not supported. Nonetheless, it may be worth comparing the examples to the below equivalent to help get your head around what's going on:

<?xml version="1.0" encoding="utf-8" ?>
<custom class="power-menu">
    <bar>
        <button name="power-btn" label="" on_click="popup:toggle"/>
    </bar>
    <popup>
        <box orientation="vertical">
            <label name="header" label="Power menu" />
            <box>
                <button class="power-btn" label="" on_click="!shutdown now" />
                <button class="power-btn" label="" on_click="!reboot" />
            </box>
            <label name="uptime" label="Uptime: {{30000:uptime -p | cut -d ' ' -f2-}}" />
        </box>
    </popup>
</custom>
JSON 
{
  "end": [
    {
      "type": "clock"
    },
    {
      "bar": [
        {
          "on_click": "popup:toggle",
          "label": "",
          "name": "power-btn",
          "type": "button"
        }
      ],
      "class": "power-menu",
      "popup": [
        {
          "orientation": "vertical",
          "type": "box",
          "widgets": [
            {
              "label": "Power menu",
              "name": "header",
              "type": "label"
            },
            {
              "type": "box",
              "widgets": [
                {
                  "class": "power-btn",
                  "on_click": "!shutdown now",
                  "label": "<span font-size='40pt'></span>",
                  "type": "button"
                },
                {
                  "class": "power-btn",
                  "on_click": "!reboot",
                  "label": "<span font-size='40pt'></span>",
                  "type": "button"
                }
              ]
            },
            {
              "label": "Uptime: {{30000:uptime -p | cut -d ' ' -f2-}}",
              "name": "uptime",
              "type": "label"
            }
          ]
        }
      ],
      "type": "custom"
    }
  ]
}
TOML 
[[end]]
type = 'clock'

[[end]]
class = 'power-menu'
type = 'custom'

[[end.bar]]
on_click = 'popup:toggle'
label = ''
name = 'power-btn'
type = 'button'

[[end.popup]]
orientation = 'vertical'
type = 'box'

[[end.popup.widgets]]
label = 'Power menu'
name = 'header'
type = 'label'

[[end.popup.widgets]]
type = 'box'

[[end.popup.widgets.widgets]]
class = 'power-btn'
on_click = '!shutdown now'
label = '''<span font-size='40pt'></span>'''
type = 'button'

[[end.popup.widgets.widgets]]
class = 'power-btn'
on_click = '!reboot'
label = '''<span font-size='40pt'></span>'''
type = 'button'

[[end.popup.widgets]]
label = '''Uptime: {{30000:uptime -p | cut -d ' ' -f2-}}'''
name = 'uptime'
type = 'label'
YAML 
end:
- type: clock
- bar:
  - on_click: popup:toggle
    label: 
    name: power-btn
    type: button
  class: power-menu
  popup:
  - orientation: vertical
    type: box
    widgets:
    - label: Power menu
      name: header
      type: label
    - type: box
      widgets:
      - class: power-btn
        on_click: '!shutdown now'
        label: <span font-size='40pt'></span>
        type: button
      - class: power-btn
        on_click: '!reboot'
        label: <span font-size='40pt'></span>
        type: button
    - label: 'Uptime: {{30000:uptime -p | cut -d '' '' -f2-}}'
      name: uptime
      type: label
  type: custom
Corn 
let {
    $button = { type = "button" name="power-btn" label = "" on_click = "popup:toggle" }

    $popup = {
        type = "box"
        orientation = "vertical"
        widgets = [
            { type = "label" name = "header" label = "Power menu" }
            {
                type = "box"
                widgets = [
                    { type = "button" class="power-btn" label = "<span font-size='40pt'></span>" on_click = "!shutdown now" }
                    { type = "button" class="power-btn" label = "<span font-size='40pt'></span>" on_click = "!reboot" }
                ]
            }
            { type = "label" name = "uptime" label = "Uptime: {{30000:uptime -p | cut -d ' ' -f2-}}" }
        ]
    }

    $power_menu = {
        type = "custom"
        class = "power-menu"

        bar = [ $button ]
        popup = [ $popup ]

        tooltip = "Up: {{30000:uptime -p | cut -d ' ' -f2-}}"
    }
} in {
    end = [ $power_menu ]
}

Styling

Since the widgets are all custom, you can use their name and class attributes, then target them using #name and .class.

The following top-level selectors are always available:

Selector Description
.custom Custom widget container.
.popup-custom Custom widget popup container.

For more information on styling, please see the styling guide.

Guides

Dynamic content

Examples

Custom

Modules

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