Helder Magalhães wrote:
I'm not particularly interested, but yes: sharing a/the solution (or a
possible workaround, etc.), even if just a summary of it, is generally
welcome [1]... ;-)
OK. I do have an outstanding question about my own code, but it is an
SVG question and not anything to do with Batik. The question is what is
the role of the viewBox attribute in the imported node? I found that if
I do not set it to the viewport parameters this doesn't work.
SVGDocument ourDoc = getSVGDocument();
SVGSVGElement root = ourDoc.getRootElement();
SVGDocument doc = /* the document to import */ ;
// import the root SVG element
SVGSVGElement panelRoot = doc.getRootElement();
SVGOMSVGElement node = (SVGOMSVGElement)
ourDoc.importNode(panelRoot, true);
// make sure we are using the right namespace
String ns = root.getNamespaceURI();
// discover the rect where we want the new graphic to go
SVGRect position = /* where we want node to appear */;
// the original panel width is used to calculate the scale
// factor. We assume that the aspect ratio of node and root are
the same
float originalPanelWidth = node.getWidth().getBaseVal().getValue();
// set the viewport
node.setAttribute("x", Double.toString(position.getX()));
node.setAttribute("y", Double.toString(position.getY()));
node.setAttribute("width", Double.toString(position.getWidth()));
node.setAttribute("height", Double.toString(position.getHeight()));
// set the viewbox to the same as the view port
node.setAttribute("viewBox", String.format("%f %f %f %f",
position.getX(), position.getY(),
position.getWidth(), position.getHeight()));
// create a g element and transfer all of the svg element's
// elements to it, then make the g element the only child
// of the original g element
SVGOMGElement g = (SVGOMGElement)
ourDoc.createElementNS(ns, "g");
Node child;
while ((child = node.getFirstElementChild()) != null)
g.appendChild(child);
node.appendChild(g);
// move and scale to the position without rotation
if (!isRotationNeeded()) {
g.setAttribute("transform", String.format(
"translate(%f, %f) scale(%f)",
position.getX(), position.getY(),
position.getWidth() / originalPanelWidth));
}
// or rotate 90 degrees if needed
else {
g.setAttribute("transform", String.format(
"rotate(90) translate(%f, %f) scale(%f)",
0.0,
0 - position.getX() - position.getWidth(),
position.getHeight() / originalPanelWidth));
}
// attach to the new SVG element to our root and we are done
root.appendChild(node);
I hope someone finds this useful even though there are probably more
elegant ways of getting this done.
--
Alan Deikman
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