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Posted to batik-dev@xmlgraphics.apache.org by Robert D <r_...@hotmail.com> on 2002/08/05 18:18:55 UTC
SVGGraphics2D .....Are the attributes on the
Hello Batikers and Batik team,
I have been studying SVGGraphics2D class....(starting at the very top and
following everyline down. :-) ....the only way to learn):
http://cvs.apache.org/viewcvs.cgi/xml-batik/sources/org/apache/batik/svggen/SVGGraphics2D.java?annotate=1.33
I have run into a small problem....and maybe someone can help me....
If you output SVGGraphics2D without adding anything to the W3 DOM Document
object .
import java.io.IOException;
import java.io.OutputStreamWriter;
import java.io.Writer;
import org.w3c.dom.DOMImplementation;
import org.w3c.dom.Document;
import org.apache.batik.dom.GenericDOMImplementation;
import org.apache.batik.svggen.SVGGraphics2D;
import java.lang.*;
public class Robert
{
public static void main(String[] args)throws IOException
{
DOMImplementation DOMImplementation =
GenericDOMImplementation.getDOMImplementation();
Document Document = DOMImplementation.createDocument(null, "svg", null );
SVGGraphics2D SVGGraphics2D = new SVGGraphics2D( Document );
Writer out = new OutputStreamWriter(System.out);
SVGGraphics2D.stream(out);
}
}
.....you will get this as output:
<?xml version="1.0" encoding="Cp1252"?>
<!DOCTYPE svg PUBLIC '-//W3C//DTD SVG 1.0//EN'
'http://www.w3.org/TR/2001/REC-SVG-20010904 /DTD/svg10.dtd'>
<svg xmlns:xlink="http://www.w3.org/1999/xlink" style="fill-opacity:1;
color-rendering:aut
o; color-interpolation:auto; text-rendering:auto; stroke:black;
stroke-linecap:square; str
oke-miterlimit:10; shape-rendering:auto; stroke-opacity:1; fill:black;
stroke-dasharray:no
ne; font-weight:normal; stroke-width:1; font-family:'sansserif';
font-style:norm
al; stroke-linejoin:miter; font-size:12; stroke-dashoffset:0;
image-rendering:auto;" xmlns="http://www.w3.org/2000/svg">
<!--Generated by the Batik Graphics2D SVG Generator-->
<defs id="genericDefs" />
<g />
</svg>
Question :
I can see that the XMLWriter is used to build the :
<?xml version="1.0" encoding="Cp1252"?>
<!DOCTYPE svg PUBLIC '-//W3C//DTD SVG 1.0//EN'
'http://www.w3.org/TR/2001/REC-SVG-20010904/DTD/svg10.dtd'>
and it looks like DOMTreeManager and DOMGroupManager is for:
<!--Generated by the Batik Graphics2D SVG Generator-->
<defs id="genericDefs" />
<g />
</svg>
Where in the SVGGraphics class do the attributes to the <svg> element get
put on the <svg> element ?
I can creat a document object with this:
Document Document = DOMImplementation.createDocument(null, "rat", null );
and I still get the same output.....<svg> element :-(....it should be
rat....(even though I know that would be wrong)...are the attributes on the
svg element hard coded?
Any help would be great.....I really want to understand what is going on
under the hood ;-)
We all learn by sharing what we know
Robert A. DiBlasi
http://www.svgnotebook.com
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SVGGraphics2D .....Are the attributes on the
Posted by Thomas E Deweese <th...@kodak.com>.
>>>>> "RD" == Robert D <r_...@hotmail.com> writes:
RD> If you output SVGGraphics2D without adding anything to the W3 DOM
RD> Document object .
rD> <svg xmlns:xlink="http://www.w3.org/1999/xlink" style="fill-opacity:1;
RD> color-rendering:auto; color-interpolation:auto;
RD> text-rendering:auto; stroke:black; stroke-linecap:square; str
RD> oke-miterlimit:10; shape-rendering:auto; stroke-opacity:1;
RD> fill:black; stroke-dasharray:no ne; font-weight:normal;
RD> stroke-width:1; font-family:'sansserif'; font-style:norm
RD> al; stroke-linejoin:miter; font-size:12; stroke-dashoffset:0;
RD> image-rendering:auto;" xmlns="http://www.w3.org/2000/svg">
RD> <!--Generated by the Batik Graphics2D SVG Generator--> <defs
RD> id="genericDefs" /> <g /> </svg>
[...]
RD> Where in the SVGGraphics class do the attributes to the <svg>
RD> element get put on the <svg> element ?
They are added by DOMTreeManager.applyDefaultRenderingStyle
(called from DOMTreeManager.getRoot(..)).
It gets the list of properties to set from the 'defaultGC' which
is initialized from the GraphicsContext passed into the
DOMTreeConstructor from SVGGraphics2D.setGeneratorContext(...), which
can get initialized from the GeneratorContext passed in to the
SVGGraphics2D, but generally just takes the defaults from:
...batik.ext.awt.g2d.GraphicsContext object (which
has them hard coded).
RD> I can creat a document object with this:
RD> Document Document = DOMImplementation.createDocument(null, "rat",
RD> null );
RD> and I still get the same output.....<svg> element :-(....it should
RD> be rat....(even though I know that would be wrong)...are the
RD> attributes on the svg element hard coded?
RD> Any help would be great.....I really want to understand what is
RD> going on under the hood ;-)
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