[email protected] wrote:
Hi Dan,
Dan Slater <[email protected]> wrote on 02/09/2009 01:27:36 PM:
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);
Try adding the text node before adding the title element
to the document (I don't think it matters but it might).
I changed the order as follows, to no avail:
Text txt = doc.createTextNode(id);
SVGTitleElement title =
(SVGTitleElement)doc.createElementNS(svgNS, "title");
title.appendChild(txt);
a.appendChild(title);
...and the <use> element displays correctly in the JSVGCanvas, sans
tooltip.
The SVGGraphics2D output:
Hmm, how do you configure the Canvas? Do you set it to be
dynamic or interactive?
This was only set on the initial document, but now I've added it to each
subsequent .setSVGDocument() call, to no avail:
svgCanvas.setSVGDocument(svgDoc);
svgCanvas.setDoubleBufferedRendering(true);
svgCanvas.setDocumentState(JSVGCanvas.ALWAYS_DYNAMIC);
<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 (?).
This looks right to me.
What Batik version did you use in your test? Could you please send
me a snippet?
I used current trunk Batik, but I don't think anything has changed
in this area for a while. I used two tests, first was from the Batik
Distribution: samples/tests/spec/scripting/addDescOnClick.svg. I also
added an 'anchor' test row to samples/tests/spec/structure/toolTip.svg:
<g id="aRow" transform="translate(0, 220)">
<g fill="white" stroke="black" >
<rect x="0" y="0" width="60" height="20" />
<rect x="60" y="0" width="60" height="20" />
<rect x="120" y="0" width="60" height="20" />
<rect x="180" y="0" width="60" height="20" />
<rect x="240" y="0" width="60" height="20" />
</g>
<text x="30" y="15" class="label"><a></text>
<g id="aSamples" stroke="none" fill="blue"
text-anchor="middle">
<!-- No info -->
<!-- No info -->
<a xlink:href="#useElem"
><text transform="translate(60, 0)" x="30" y="15"
>Link!</text></a>
<!-- title -->
<a xlink:href="#useElem">
<text transform="translate(120, 0)" x="30" y="15"
>Link!</text>
<title><text> with <title> only</title>
</a>
<!-- desc -->
<a xlink:href="#useElem">
<desc><text> with <desc> only</desc>
<text transform="translate(180, 0)" x="30" y="15"
>Link!</text></a>
<!-- title and desc -->
<a xlink:href="#useElem">
<title>Title: <text> with <title> and
<desc></title>
<desc>Description: <text> with <desc>
and <desc></desc>
<text transform="translate(240, 0)" x="30" y="15"
>Link!</text></a>
</g>
</g> <!-- "aRow" -->
I looked at the addDescOnClick.svg file (dated 4/10/2005 in my
distribution)...is that a test that you would run via loading the file
with a browser? When I load the file with Firefox 3 or IE6 I get no
tooltips, even over the rectangles that have predefined titles/descs,
and no onClick action when I click on top row of rectangles. I checked
options on Firefox to make sure Java and JavaScript are both enabled,
and my firewall is not blocking anything.
Am I missing something basic, or using these tests incorrectly? I don't
understand how to implement these tests on the JSVGCanvas. Is it
possible the JSVGCanvas might not mimic browser behavior despite a
'correct' internal DOM representation? Or it's time to try updating to
Batik 1.7?
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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