MultiMeter

MultiMeter

new MultiMeter(optionsopt)

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Properties:
Name Type Attributes Default Description
options.count Number <optional>
 2

The number of level meters.
options.label String <optional>
 ""

The label of the multi meter. Set to false to hide the label from the DOM.
options.labels Array.<String> <optional>
 ["L", "R"]

An Array containing labels for the level meters. Their order is the same as the meters.
options.values Array.<Number> <optional>
 []

An Array containing values for the level meters. Their order is the same as the meters.
options.value_labels Array.<Number> <optional>
 []

An Array containing label values for the level meters. Their order is the same as the meters.
options.clips Array.<Boolean> <optional>
 []

An Array containing clippings for the level meters. Their order is the same as the meters.
options.tops Array.<Number> <optional>
 []

An Array containing values for top for the level meters. Their order is the same as the meters.
options.bottoms Array.<Number> <optional>
 []

An Array containing values for bottom for the level meters. Their order is the same as the meters.

MultiMeter is a collection of LevelMeters to show levels of channels containing multiple audio streams. It offers all options of LevelMeter and Meter which are passed to all instantiated level meters.

Available presets:

  • mono
  • 2.1
  • 3
  • 3.1
  • 4
  • 4.1
  • 5
  • 5.1
  • 7.1
  • dolby_digital_1_0
  • dolby_digital_2_0
  • dolby_digital_3_0
  • dolby_digital_2_1
  • dolby_digital_2_1.1
  • dolby_digital_3_1
  • dolby_digital_3_1.1
  • dolby_digital_2_2
  • dolby_digital_2_2.1
  • dolby_digital_3_2
  • dolby_digital_3_2.1
  • dolby_digital_ex
  • dolby_stereo
  • dolby_digital
  • dolby_pro_logic
  • dolby_pro_logic_2
  • dolby_pro_logic_2x
  • dolby_e_mono
  • dolby_e_stereo
  • dolby_e_5.1_stereo
Parameters:
Name Type Attributes Default Description
options Object <optional>
 { }

An object containing initial options.

Extends

Members

element :HTMLDivElement

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The main DIV container. Has class .aux-multimeter.

Type:
  • HTMLDivElement

label :HTMLDivElement

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The Label widget displaying the meters title.

Type:
  • HTMLDivElement

Methods

addChild(child)

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Registers a widget as a child widget. This method is used to build up the widget tree. It does not modify the DOM tree.

Parameters:
Name Type Description
child Widget

The child to add.
Fires:
  • Widget#event:child_added

addChildren(a)

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Registers an array of widgets as children.

Parameters:
Name Type Description
a Array.<Widget>

An array of Widgets.

allChildren()

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Returns an array of all children.

appendChild(child)

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Appends child.element to the widget element and registers child as a child widget.

Parameters:
Name Type Description
child Widget

The child widget to append.

appendChildren(children)

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Calls Widget#appendChild for an array of widgets.

Parameters:
Name Type Description
children Array.<Widget>

The child widgets to append.

disableTansitions()

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Disable CSS transitions.

enableDraw()

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Schedules this widget for drawing.

Fires:

enableDrawChildren()

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Enables rendering for all children of this widget.

enableTransitions()

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Enable CSS transitions.

forceHide()

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Hide the widget immediately by applying the class aux-hide. Does not call disableDraw().

forceShow()

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Show the widget immediately by applying the class aux-show. Does not call enableDraw().

getStyle()

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Returns the computed style of this widget's DOM element.

hidden()

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Returns the current hidden status.

hide()

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Starts the transition of the visible to false.

hideChild(child)

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Switches the hidden state of a child to hidden. The argument is either the child index or the child itself.

Parameters:
Name Type Description
child Object | integer

Child or its index.

invalidate(key)

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Invalidates an option and triggers a redraw() call.

Parameters:
Name Type Description
key string

isChildHidden(child) → {boolean}

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Returns true if the given child is currently marked as hidden in this container.

Parameters:
Name Type Description
child number | Widget
Returns:
Type
boolean

observeResize(cb)

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Calls a callback whenever the widget resizes. This method will trigger one resize.

Parameters:
Name Type Description
cb function

removeChild(child)

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Removes a child widget. Note that this method only modifies the widget tree and does not change the DOM.

Parameters:
Name Type Description
child Widget

The child to remove.
Fires:
  • Widget#event:child_removed

removeChildren(a)

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Removes an array of children.

Parameters:
Name Type Description
a Array.<Widget>

An array of Widgets.

set(key, value)

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Sets an option.

Parameters:
Name Type Description
key string

The option name.
value

The option value.

setStyle()

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Sets a CSS style property in this widget's DOM element.

show()

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Starts the transition of the visible to true.

showChild(child)

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Switches the hidden state of a child to shown. The argument is either the child index or the child itself.

Parameters:
Name Type Description
child Object | integer

Child or its index.

toggleChild(child)

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Toggles the hidden state of a child. The argument is either the child index or the child itself.

Parameters:
Name Type Description
child Object | integer

Child or its index.

toggleHidden()

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Toggle the hidden status. This is equivalent to calling hide() or show(), depending on the current hidden status of this widget.

transitionsDisabled()

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Returns true if transitions are currently disabled on this widget.

visibleChildren()

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Returns an array of all visible children.

Events

destroy

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Is fired when a widget is destroyed.

doubleclick

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Is fired after a double click appeared. Set dblclick to 0 to disable click event handling.

Parameters:
Name Type Description
event string

The browsers MouseEvent.

GenericDOMEvents

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Generic DOM events. Please refer to W3Schools for further details.

hide

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The hide event is emitted when a widget is hidden and is not rendered anymore. This happens both with browser visibility changes and also internally when using layout widgets such as Pager.

initialized

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Is fired when a widget is initialized.

redraw

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The redraw event is emitted when a widget is redrawn. This can be used to do additional DOM modifications to a Widget.

resize

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The resize event is emitted whenever a widget is being resized. This event can be used to e.g. measure its new size. Note that some widgets do internal adjustments after the resize event. If that is relevant, the Widget#resized event can be used instead.

resized

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The resized event is emitted after each rendering frame, which was triggered by a resize event.

set

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The set event is emitted when an option was set using the Widget#set method. The arguments are the option name and its new value.

Note that this happens both for user interaction and programmatical option changes.

show

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The show event is emitted when a widget is shown and is being rendered. This is the counterpart to Widget#hide.

visibility

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Is fired when the visibility state changes. The first argument is the visibility state, which is either true or false.