Hi Nazer,
mhhh, that's strange. As Thomas said, that's the way it should normally
work and my code looks very similiar to yours and it works.
Perhaps you can do one more thing. Test, if the node you are looking for
is an instance of SVGLocatable [if (node instanceof SVGLocatable) {...}]
Only if this is true, you can get the BoundingBox of this element.
If this also doesn't work, make a very simple example and test it there
first. Perhaps you can get closer to the problem then.
Florian
-----Original Message-----
From: Nazar Stasiv (Lohika, Inc) [mailto:[EMAIL PROTECTED]
Sent: Monday, August 14, 2006 5:47 PM
To: [email protected]
Subject: Re: SVGOMGElement and coordinates?
Florian,
I get null here for return value
public static SVGRect getSVGRect(SVGLocatable e){
return e.getBBox(); //<-- returns null.
}
And initialization I do with the code below
public static SVGDocument parseSvg(String uri) {
UserAgent userAgent = new UserAgentAdapter();
DocumentLoader loader = new DocumentLoader(userAgent);
SVGDocument doc;
try {
doc = (SVGDocument) loader.loadDocument(uri);
} catch (Exception e) {
e.printStackTrace();
throw new RuntimeException(e);
}
BridgeContext ctx = new BridgeContext(userAgent, loader);
ctx.setDynamicState(BridgeContext.DYNAMIC);
GVTBuilder builder = new GVTBuilder();
GraphicsNode rootGN = builder.build(ctx, doc);
loader.dispose();
return doc;
}
Everything goes fine (no exceptions in parseSvg(String)) untill
getSVGRect is called. Please help.
Pepping, Florian wrote:
> Hi Nazer,
>
> I think I had the same problem some time ago. Before you can use
> getBBox() you have to build the GVT-Tree in order to get this
> information.
> You can do this in the following way:
> SVGDocument svgDoc =
> (SVGDocument)loader.loadDocument(file.toURL().toString());
> loader.dispose();
> BridgeContext ctx = new BridgeContext(userAgent,
> loader);
> ctx.setDynamicState(BridgeContext.DYNAMIC);
> GVTBuilder builder = new GVTBuilder();
> builder.build(ctx, svgDoc);
>
> // use getBBox() afterwards
>
> After this, SVGLocatable.getBBox() shouldn't return null any longer.
>
> Florian
>
> -----Original Message-----
> From: Nazar Stasiv (Lohika, Inc) [mailto:[EMAIL PROTECTED]
> Sent: Monday, August 14, 2006 3:16 PM
> To: [email protected]
> Subject: Re: SVGOMGElement and coordinates?
>
>
> SVGLocatable.getBBox(elem) returns null No javadoc comments are there
to
>
> unveil the reason of such behaviour
>
> Is there the other way to get coordinates of SVGOMGElement ?
>
>
> [EMAIL PROTECTED] wrote:
>
>> Hi Nazer,
>>
>> "Nazar Stasiv (Lohika, Inc)" <[EMAIL PROTECTED]> wrote on 08/14/2006
>> 07:29:19 AM:
>>
>>
>>
>>> I use batik to operate SVG at runtime.
>>>
>>> The question is how can I get SVGOMGElement coordinates when walking
>>>
> DOM
>
>>> tree of the SVG document?
>>>
>>>
>> You should look at the SVG DOM. In particular the 'getBBox'
>>
> method.
>
>> There are also methods get 'getIntersectionList' that could be
useful.
>>
>>
>>
>>
>>> The reason I'm asking such a thing it that requirements are to
>>>
> display
>
>>> info popup near named elements of SVG. If I had coordinates of such
>>>
> an
>
>>> element I could use DOM to add new element to the tree with computed
>>> coordinates for correct positioning of the info popup.
>>>
>>>
>> This is typically done with mouse over/out event handlers. This
>> allows you to receive a DOM event when the mouse enters/exits a
>>
> particular
>
>> element or group in the SVG document. If you need the sensitive area
>>
> to
>
>> be larger than the rendered area you can add a hidden element
>> (visibility="hidden" pointer-events="fill") that can cover the
>>
> expanded
>
>> area and tie your event handler to that.
>>
>>
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>>
>>
>
>
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