The Audio widget

Author: Markus Damman

Available since: 0.8.4 (2014)

Description

The audio widget embeds an audio file, which can be automatically played by incoming data

Settings

For a general understanding of how the configuration files are structured and what elements and attributes are it is recommended to read this section first: Pages and structure of CometVisu.

The behaviour and appearance of the Audio widget can be influenced by using certain attributes and elements. The following tables show the allowed attributes and elements and their possible values. The screenshots show, how both can be edited in the editor.

Attributes underlined by ….. are mandatory, all the others are optional and be omitted.

Allowed attributes in the Audio-element

Element	Attribute
	Name	Content	Description
audio	src	URI
	id	string
	threshold_value	string
	width	dimension (number+unit)
	height	dimension (number+unit)
	volume	string
	autoplay	string
	loop	string
	flavour	string	Selection of a display variant. See also Flavour.
	class	string	Add this value to the CSS class so that it can be formatted by a user provided style sheet.

Attributes in the editor (simple view) [1]

Allowed child-elements and their attributes

Element	Attribute
Structure	Name	Content	Description
audio layout	colspan	decimal	Amount of columns this widget should be wide.
	colspan-m	decimal	Overrules the amount of columns on a medium screen.
	colspan-s	decimal	Overrules the amount of columns on a small screen.
	rowspan	decimal	Amount of rows this widget should be high.
	x	string	Horizontal position of the widget for 2D pages.
	x-s	string	Horizontal position of the widget for 2D pages on a small screen.
	x-m	string	Horizontal position of the widget for 2D pages on a medium screen.
	y	string	Vertical position of the widget for 2D pages.
	y-s	string	Vertical position of the widget for 2D pages on a small screen.
	y-m	string	Vertical position of the widget for 2D pages on a medium screen.
	z	string	Reserved for future use.
	width	string	Width for the widget for 2D pages.
	width-s	string	Width for the widget for 2D pages on a small screen.
	width-m	string	Width for the widget for 2D pages on a medium screen.
	scale	true or false	Enable/Disable scaling layout values relative to backdrop on 2d pages (default: true).
	scale-s	true or false	Enable/Disable scaling layout values relative to backdrop on 2d pages on a small screen (default: true).
	scale-m	true or false	Enable/Disable scaling layout values relative to backdrop on 2d pages on a medium screen (default: true).

Element	Attribute
Structure	Name	Content	Description
audio label icon	name	string	Name of the icon registration.
	type	string
	flavour	string	Selection of a display variant. See also Flavour.
	color	string	Color of the icon in CSS notation (e.g. #1188FF).
	styling	string	Change the color of the displayed value depending on its value. See also Styling
	class	string	Add this value to the CSS class so that it can be formatted by a user provided style sheet.
audio label #text		string	Text to display a label for the widget.

Element	Attribute
Structure	Name	Content	Description
audio address	transform	string	Transformation of the bus system value to be shown.
	mode	disable, read, write or readwrite	“disable” deactivates the communication, “read” will only fetch data from the backend, “write” will only write to it and an address with “readwrite” will be both, read from and written to.
	variant	string
	format-pos	decimal	Position for format string when multiple addresses are used.
	selector	string	Only MQTT: JSON selector
	qos	decimal	Only MQTT: QoS
	retain	true or false	Only MQTT: retain flag
	ignore-error	true or false	Only MQTT: ignore decode errors.
audio address #text		string	The GA (like: 12/0/7) for KNX-backends, the item name for openHAB-backend or the MQTT topic

Elements in the editor

Examples

It is possible to manually edit the visu_config.xml and add an entry for the Audio widget.

Caution

Make sure that you only use UTF-8 encoded characters by settings the encoding in your XML-editor to UTF-8 mode!

<audio id="audio_widget" src="path/to/audio_file.mp3">
  <layout colspan="4"/>
  <label>Audio</label>
  <address transform="DPT:1.001" mode="read">0/0/0</address>
</audio>

Footnotes

[1]

The simple view might not show everything. To see all elements/attributes use the expert view.