Hello!
I took a look at the link below which has some code for generating a rect
element:
http://xml.apache.org/batik/domapi.html
// create the rectangle
Element rectangle = doc.createElementNS(svgNS, "rect");
rectangle.setAttributeNS(null, "x", "10");
rectangle.setAttributeNS(null, "y", "20");
rectangle.setAttributeNS(null, "width", "100");
rectangle.setAttributeNS(null, "height", "50");
rectangle.setAttributeNS(null, "style", "fill:red");
My question is do I use createElementNS to create an SVG text element, or is
that what createTextNode is for?
In fact, I assumed the later since createElementNS returns an Element, and I
was not able to figure out how to to set the text that goes in between
<text> and </text>. However, neither Element nor Text has the crucial method
getComputedTextLength(), which I believe I need to get the width of the
string in pixels. Hence in my code below you will see a "dummy" cast of Text
to SVGOMTextContentElement, which of course causes an exception. In fact,
SVGOMTextContentElement is abstract anyway, I was unable to find anything
concrete that contains getComputedTextLength(). In fact now I believe I must
have misunderstood the purpose of the getComputedTextLength() method, but I
still have this crazy dream of outputting a non-constant string of text, and
I hope someone smarter than me will be happy to steer me in the right
direction! I joined this list yesterday just so I could ask this question,
and hopefully I will be able to help someone else out too one day. Thanks in
advance for a reply.
This will show you what I am trying to do:
public int stringWidth(String name)
{
DOMImplementation impl = SVGDOMImplementation.getDOMImplementation();
Document doc = impl.createDocument("http://www.w3.org/2000/svg";,
"svg", null);
org.w3c.dom.Text someText = doc.createTextNode(name);
/* flag and avold "not initialized" error */
float someTextLen = -1;
try
/* bad cast - want to cast Text to an object with
getComputedTextLength() */
{
someTextLen = ((SVGOMTextContentElement)
someText).getComputedTextLength();
}
catch (java.lang.ClassCastException CastawayEx)
{
System.out.println("org.w3c.dom.Text cannot be cast " +
"to org.apache.batik.dom.svg.SVGOMTextContentElement");
}
return (int) someTextLen;
}
Thanks in advance,
Dave
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