Hi Tonny.
Tonny Kohar:
> I would like to request public API access to the
> org.apache.batik.anim.timing.TimedElement.
I agree it would be useful to expose animation engine information from
the document. I’m not sure what the ideal API would be, though.
> After briefly studying Batik code base, I think by simple doing the
> following will expose public TimedElement
>
> - in org.apache.batik.dom.svg.SVGOMAnimationElement provide
> * public SVGAnimationContext getSVGAnimationContext() {
> return ((SVGAnimationContext) getSVGContext())
> }
>
> - in org.apache.batik.dom.svg.SVGAnimationContext provide
> * public TimedElement getTimedElement();
>
> - in org.apache.batik.bridge.SVGAnimationElementBridge already provide
> the above getTimedElement()
Given that SVGAnimationElementBridge already exposes the TimedElement
through that method, I think we don’t need to add the first two methods
you propose. You can just do, for example:
SVGOMAnimateElement e = …;
TimedElement te =
(SVGAnimationElementBridge) e.getSVGContext()).getTimedElement();
> I need to get access to the TimedElement, because currently I am
> creating SVG Animation Editor and need more information regarding the
> animation more than SVGAnimationElement provide (getStartTime(),
> getSimpleDuration).
Tonny Kohar:
> Sorry, almost forgot, I also would like to request public API for some
> attribute of TimedElement
>
> - public TimingSpecifier[] getBeginTimes() {
> return beginTimes;
> }
>
> - public TimingSpecifier[] getEndTimes() {
> return endTimes;
> }
I suspect that in the end you’ll need some more complex interface to the
animation engine (e.g. registering listeners for changes to the
timegraph, begin/end instance times being created/removed, etc.).
I am a little reluctant to make the existing classes more “public”,
since they’re not really designed for applications to use. For example,
TimingSpecifier has public initialize()/deinitialize() methods, which
are really just for use by TimedElement.
But if you don’t mind the interface possibly changing later, and if you
promise not to call initialize(), I can add these methods. :-)
Please do feel free to suggest a more complete/modular interface for
gaining access to timing information from the document.
--
Cameron McCormack, http://mcc.id.au/
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