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From thomas.dewe...@kodak.com
Subject Re: Getting BBox on non-graphic application
Date Sat, 30 Oct 2010 12:37:06 GMT
Hi Jonathan,  Julien,

jonathan wood <jonathanshawwood@gmail.com> wrote on 10/29/2010 06:06:32 
PM:

>   You should be able to load the document, and subsequently calculate
> a bbox without actually rendering the document.

        Yes, this is close to what is needed but you need to "boot"
the SVG and CSS DOM for the calls to getBBox to work. See the Wiki page:

        http://wiki.apache.org/xmlgraphics-batik/BootSvgAndCssDom

        I would do this after the createSVGDocument call.

> Try some sequence like...
> 
>         InputStream templateStream =
> MyClass.class.getResourceAsStream("mysvg.svg"); //
>         String parser = XMLResourceDescriptor.getXMLParserClassName();
>         SAXSVGDocumentFactory f = new SAXSVGDocumentFactory(parser);
>         SVGDocument doc = null;
> 
>         try {
>             doc = f.createSVGDocument(null, templateStream);
>         } catch (IOException ex) {
>         } finally {
>         }
> 
>         NodeList rects = doc.getElementsByTagName("rect");
> 
>        SVGRect bbox = null;
> 
>        for(int i = 0;i < rects.getLength();i++) {
>             bbox = ((SVGLocatable)rects[i]).getBbox();
>             //transforms, etc if needed
>        }
> 
> 
> On Fri, Oct 29, 2010 at 4:08 AM, Julien Beghin 
> <minimoi1234@hotmail.com> wrote:
> > Hi Batik World !
> >
> > We are working on a server-side SVG generator : The are getting anXML 
file,
> > and we are converting its data to SVG.
> > The main part of the process is done and is OK, but we are facing a 
problem
> > of bounded box.
> >
> > Our problem is that we have to sort "rectangles" by size in order to 
put the
> > bigger items first in the generated SVG (so in the background of 
displayed
> > SVG) and the smallests at the end of the list( on the top of the SVG)?
> > This sort is done so that we can select all our rectangles.
> >
> >
> > So now the difficult part for us is to do this sort without rendering 
the
> > SVG, and consequently without getting their Bounded Boxes ?
> >
> > Do any of you have already done something like this ?
> >
> > Can you give some advice or orientations on the way this is possible ?
> >
> >
> >
> > Thanks and Regards,
> >
> > Julien
> >
> 
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