new Crossover(optionsopt)
TK.Crossover is a TK.Equalizer displaying the response of a multi-band crossover filter. TK.Crossover uses TK.CrossoverBand as response handles.
Parameters:
Name | Type | Attributes | Default | Description |
---|---|---|---|---|
options |
Object |
<optional> |
{ } | An object containing initial options. |
Properties:
Name | Type | Attributes | Default | Description |
---|---|---|---|---|
options.leap |
Boolean |
<optional> |
true | Define if bands are allowed to leap over each other. |
options.distance |
Number |
<optional> |
0 | Set a minimal distance between bands if leaping is not allowed. Value is a factor of x. Example: if distance=0.2 a band cannot be moved beyond 800Hz if the upper next band is at 1kHz. |
Source: |
Extends
Members inherited from TK.Equalizer
_bands :SVGGroup
The SVG group containing all the bands SVG elements.
Has class toolkit-eqbands
.
bands :Array
Array of TK.EqBand instances.
baseline :TK.Graph
The graph drawing the zero line.
Has class toolkit-baseline
element :HTMLDivElement
The main DIV container.
Has class toolkit-equalizer
.
Members inherited from TK.ResponseHandler
_handles :SVGImage
An SVG group element containing all TK.ResponseHandle graphics.
Has class toolkit-response-handles
.
Members inherited from TK.Chart
_graphs :SVGGroup
The SVG group containing all graphs.
Has class toolkit-graphs
.
_key :SVGGroup
The SVG group containing all descriptions.
Has class toolkit-key
.
_key_background :SVGRect
The SVG rectangle of the key.
Has class toolkit-background
.
_title :SVGText
The title of the chart.
Has class toolkit-title
.
graphs :Array
An array containing all SVG paths acting as graphs.
grid :TK.Grid
The grid element of the chart.
Has class toolkit-grid
.
handles :Array
An array containing all TK.ResponseHandle instances.
range_x :TK.Range
The TK.Range for the x axis.
range_y :TK.Range
The TK.Range for the y axis.
Methods inherited from TK.Equalizer
add_band(optionsopt, typeopt)
Add a new band to the equalizer. Options is an object containing options for the TK.EqBand
add_bands(options, typeopt)
Add multiple new TK.EqBands to the equalizer. Options is an array of objects containing options for the new instances of TK.EqBand
remove_bands(bands)
remove_handle(band)
Remove a band from the widget.
Methods inherited from TK.Chart
add_graph(graph) → {Object}
Add a graph to the chart.
add_handle(optionsopt, typeopt)
Add a new handle to the widget. Options is an object containing options for the TK.ResponseHandle.
add_handles(options, typeopt)
Add multiple new TK.ResponseHandle to the widget. Options is an array of objects containing options for the new instances of TK.ResponseHandle.
empty()
Remove all graphs from the chart.
remove_graph(graph)
Remove a graph from the chart.
remove_handles(handles)
Remove multiple or all TK.ResponseHandle from the widget.
Methods inherited from TK.Widget
add_child(child)
Registers a widget as a child widget. This method is used to build up the widget tree. It does not modify the DOM tree.
add_children(a)
Registers an array of widgets as children.
all_children()
Returns an array of all children.
enable_draw()
Schedules this widget for drawing.
force_hide()
This is an alias for hide, which may be overloaded. See TK.Container for an example.
force_show()
This is an alias for hide, which may be overloaded. See TK.Container for an example.
get_style()
Returns the computed style of this widgets DOM element.
hidden()
Returns the current hidden status.
hide()
Make the widget hidden. This does not modify the DOM, instead it will stop rendering this widget. Options changed after calling hide will only be rendered (i.e. applied to the DOM) when the widget is made visible again using TK.Widget#show.
remove_child(child)
Removes a child widget. Note that this method only modifies the widget tree and does not change the DOM.
remove_children(a)
Removes an array of children.
set(key, value)
Sets an option.
set_style()
Sets a CSS style property in this widgets DOM element.
show()
Make the widget visible. This does not modify the DOM, instead it will only schedule the widget for rendering.
toggle_hidden()
TK.Toggle the hidden status. This is equivalent to calling hide() or show(), depending on the current hidden status of this widget.
visible_children()
Returns an array of all visible children.
widgetize()
Set the DOM elements of this widgets. This method is usually only used internally. Basically it means to add the id from options and set a basic CSS class. If delegate is true, basic events will be delegated from the element to the widget instance if classify is true, CSS functions will be bound to the widget instance.
Methods inherited from TK.Base
add_event(event, func, prevent, stop)
Register an event handler.
add_events(events, func)
Add multiple event handlers at once, either as dedicated event handlers or a list of event descriptors with a single handler function.
delegate_events(element) → {HTMLElement}
Delegates all occuring DOM events of a specific DOM node to the widget. This way the widget fires e.g. a click event if someone clicks on the given DOM node.
destroy()
Destroys all event handlers and the options object.
fire_event(event, …args)
Fires an event.
fire_events(events)
Fires several events.
get(key)
Get the value of an option.
has_event_listeners(event) → {boolean}
Test if the event descriptor has some handler functions in the queue.
remove_event(event, fun)
Removes the given function from the event queue. If it is a native DOM event, it removes the DOM event listener as well.
remove_events(events, func)
Remove multiple event handlers at once, either as dedicated event handlers or a list of event descriptors with a single handler function.
set_options(optionsopt)
Merges a new options object into the existing one, including deep copies of objects. If an option key begins with the string "on" it is considered as event handler. In this case the value should be the handler function for the event with the corresponding name without the first "on" characters.
userset(key, value)
Sets an option by user interaction. Emits the userset
event. The userset
event can be cancelled (if an event handler
returns false
), in which case the option is not set.
Returns true
if the option was set, false
otherwise. If the option was set, it will emit a useraction
event.
Events inherited from TK.Equalizer
bandadded
Is fired when a new band was added.
bandremoved
Is fired when a band was removed.
emptied
Is fired when all bands are removed.
Events inherited from TK.Chart
graphadded
Is fired when a graph was added. Arguments are the graph and its position in the array.
graphremoved
Is fired when a graph was removed. Arguments are the graph and its position in the array.
handleadded
Is fired when a new handle was added.
handleremoved
Is fired when a handle was removed.
Events inherited from TK.Widget
GenericDOMEvents
Generic DOM events. Please refer to W3Schools for further details.
classified
Is fired when a widget is classified.
destroy
Is fired when a widget is destroyed.
doubleclick
Is fired after a double click appeared. Set dblclick
to 0 to
disable click event handling.
hide
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 TK.Pager.
initialized
Is fired when a widget is initialized.
redraw
Is fired when a redraw is executed.
resize
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 TK.Widget#resized event can
be used, instead.
resized
The resized
event is emitted after each rendering frame, which was triggered by
a resize event.
set
The set
event is emitted when an option was set using the TK.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
The show
event is emitted when a widget is shown and is being rendered. This is the
counterpart to TK.Widget#hide.
stylized
Is fired when a widget is stylized.
visibility
Is fired when the visibility state changes. The first argument
is the visibility state, which is either true
or false
.
widgetize
Is fired when a widget is widgetized.
Events inherited from TK.Base
delegated
Is fired when an element is delegated.
set_[option]
Is fired when an option is set.