Hi, Thomas,
Thanks for taking a look. I still can't get it to work, though. Here's a
specific code followed by the resulting SVG from a SVGGraphics2D output stream.
'parElt' is a <g>.
SVGDocument doc = (SVGDocument)parElt.getOwnerDocument();
Element a = doc.createElementNS(Intersection.svgNS, "a");
parElt.appendChild(a);
SVGUseElement use
= (SVGUseElement)doc.createElementNS(svgNS, "use");
use.setAttributeNS(xlinkNS, "xlink:href", "#receptor");
use.setAttributeNS(null, "id",id);
use.setAttributeNS(null, "x", xs);
use.setAttributeNS(null, "y", ys);
a.appendChild(use);
Element title = doc.createElementNS(Intersection.svgNS, "title");
a.appendChild(title);
Text txt = doc.createTextNode(id);
title.appendChild(txt);
...and the <use> element displays correctly in the JSVGCanvas, sans tooltip.
The SVGGraphics2D output:
<a xlink:type="simple" xlink:actuate="onRequest"
xlink:show="replace" xmlns:xlink="http://www.w3.org/1999/xlink";>
<use xmlns:xlink="http://www.w3.org/1999/xlink"; id="D1XS0R011"
xlink:show="embed" xlink:type="simple" x="-35.0" y="107.0"
xlink:href="#receptor" xlink:actuate="onLoad" />
<title>D1XS0R011</title>
</a>
which, if I understand you correctly, should work. But it doesn't. For
clarity, I stripped out some custom attributes and a transform from the <use>
element - I don't think that should make any difference (?).
What Batik version did you use in your test? Could you please send me a
snippet?
Thanks,
Dan
[email protected] wrote:
Hi Dan,
Dan Slater <[email protected]> wrote on 02/04/2009 02:26:28 PM:
Does anyone have an example of code that results in a tooltip for a
<use> element in a JSVGCanvas? This is unfortunately a long-standing
unresolved problem I have [1]. That past example shows that, for a Web
page, it would work like so:
<a xlink:href="http://www.gnote.org/"; cursor="help"
xlink:title="thinking about communication">
<title>Thought bubbles</title>
<use xlink:href="#communicate" x="90" y="-150" />
</a>
Indeed, "thinking about communication" pops up on mouseover.
This should work for Batik, you will get a tool tip with
'Thought bubbles' and not 'thinking about communication'.
But I am developing for JSVGCanvas (Batik v1.6), not the Web. When I
use this code:
SVGElement elt = (SVGElement)doc.createElementNS(Intersection.svgNS,
"use");
elt.setAttributeNS("http://www.w3.org/1999/xlink";, "xlink:href",
"#receptor");
xlink.setXLinkTitle(elt, "test");
You need to create an SVG 'title' element as your example shows and
put your tool-tip text in that.
nothing pops up on hover. Nor when I wrap the <use> in an <a> and put
xlink:title in the <a>. Nor when I explicitly set "xlink:title" instead
of using the XLinkSupport class, which just produces 'title="xyz"'....
So we use the SVG native 'title' and 'desc' elements rather than
the xlink attributes.
Element d = doc.createElementNS(Intersection.svgNS, "desc");
Text t = doc.createTextNode(id);
Element a = doc.createElementNS(Intersection.svgNS, "a");
a.setAttributeNS("http://www.w3.org/1999/xlink";, "xlink:title",
"test");
//xlink.setXLinkTitle(a, "test");
d.appendChild(t);
elt.appendChild(d);
a.appendChild(elt);
parElt.appendChild(a);
Any hints would be extremely welcome.
This example should work and does work in my testing.
I'm not sure why it isn't working for you. You can drop all
of the 'xlink:title' stuff if you want for now.
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