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SharpKit Reference

ElementTimeControl Class

SMILAnimation supports several methods for controlling the behavior of animation:

beginElement()
and
endElement()
, et al. These methods are used to begin and end an animation that has declared the timing to respond to the DOM, using the following syntax:

<animate begin="indefinite" end="indefinite" .../>

Note that only one of

begin
or
end
need be specified - either or both can be used. The
beginElement()
and
beginElementAt()
methods must do nothing if the animation is not explicitly set with the
begin="indefinite"
syntax above. The
endElement()
and
endElementAt()
methods must do nothing if the animation is not explicitly set with the
end
="indefinite"
syntax above.

Calling

beginElement()
causes the animation to begin in much the same way that an animation with event-based begin timing begins. The effective begin time is the current presentation time at the time of the DOM method call. Note that
beginElement()
is subject to the
restart
attribute in the same manner that event-based begin timing is. If an animation is specified to disallow restarting at a given point,
beginElement()
methods calls must fail. Refer also to the section Restarting animations.

Calling

beginElementAt()
has the same effect as
beginElement()
, except that the effective begin time is offset from the current presentation time by an amount specified as a parameter. Passing a negative value for the offset causes the element to begin as for
beginElement()
, but has the effect that the element begins at the specified offset into its active duration. The
beginElementAt()
method must also respect the
restart
attribute. The restart semantics for a
beginElementAt()
method call are evaluated at the time of the method call, and not at the effective begin time specified by the offset parameter.

Calling

endElement()
causes an animation to end the active duration, just as
end
does. Depending upon the value of the
fill
attribute, the animation effect may no longer be applied, or it may be frozen at the current effect. Refer also to the section Freezing animations. If an animation is not currently active (i.e. if it has not yet begun or if it is frozen), the
endElement()
method will fail.

Calling

endElementAt()
causes an animation to end the active duration, just as
endElement()
does, but allows the caller to specify a positive offset, to cause the element to end at a point in the future. Other than delaying when the end actually happens, the semantics are identical to those for
endElement()
. If
endElementAt()
is called more than once while an element is active, the end time specified by the last method call will determine the end behavior.

The expectation of the following interface is that an instance of the ElementTimeControl interface can be obtained by using binding-specific casting methods on an instance of an animate element. A DOM application can use the

hasFeature
method of the DOMImplementation interface to determine whether the
ElementTimeControl
interface is supported or not. The feature string for this interface is
"TimeControl"
.

Namespace: SharpKit.Html

Base Types

System.Object

Constructors

Name Description
ElementTimeControl()

Methods

Name Description
beginElement() Causes this element to begin the local timeline (subject to restart constraints).
beginElementAt(Single) Causes this element to begin the local timeline (subject to restart constraints), at the passed offset from the current time when the method is called. If the offset is >= 0, the semantics are equivalent to an event-base begin with the specified offset. If the offset is < 0, the semantics are equivalent to beginElement(), but the element active duration is evaluated as though the element had begun at the passed (negative) offset from the current time when the method is called.
endElement() Causes this element to end the local timeline.
endElementAt(Single) Causes this element to end the local timeline at the specified offset from the current time when the method is called

See Also

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