A few weeks ago I was painting one or more JSVGCanvas objects on top of
another to build a display with multiple document roots. This works
pretty well by using the JContainer.add() method, then you can use Swing
methods to size and position the child JSVGCanvas. However it has some
drawbacks -- the deal breaker for me was reconciling the coordinate
systems and CTMs of both the parent and child objects so that the child
showed up where I wanted it to in the right scale. Further, the
kbd/mouse interactors for both objects remain completely separate.
So I learned how to do the following:
SVGDocument ourDoc = getSVGDocument();
SVGSVGElement root = ourDoc.getRootElement();
// now get another document and import it
SVGDocument doc = otherCanvas.getSVGDocument();
SVGSVGElement panelRoot = doc.getRootElement();
SVGOMSVGElement node = (SVGOMSVGElement)
ourDoc.importNode(panelRoot, true);
// now add it to the display
root.appendChild(node);
So far so good. The next step is what I need help with, which is to
scale, translate, and possibly rotate the sub-document in "node" to a
fixed place in "root." I have the target position as follows:
SVGGraphicsElement position = (SVGGraphicsElement)
ourDoc.getElementByID("xyzzy");
SVGRect targetRect = position.getBBox();
So what is the most efficient way to get "node" to appear exactly on top
of "targetRect?" I have gotten hopelessly confused over the various
viewports, viewboxes, and transforms involved.
I may also need to rotate node by 90 degrees. Since node is an SVG
element, it won't take a transform, so do I need to encapsulate it
inside a G element?
Much thanks for any help on this.
--
Alan Deikman
ZNYX Networks
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
