Hi Dylan,
.getScreenCTM() is your friend here.
Here is some code:
function calcCoord(evt) {
var svgPoint = document.documentElement.createSVGPoint();
svgPoint.x = evt.clientX;
svgPoint.y = evt.clientY;
var matrix = evt.target.getScreenCTM(); //alternatively use a
different node reference here instead of evt.target, f.e. if you want to
calculate to a different node in the hierarchy
svgPoint = svgPoint.matrixTransform(matrix.inverse());
return svgPoint;
}
If you need standard tooltips, Batik already provides tooltips.
Unfortunately, the Adobe SVG viewer version 3 neither supports tooltips
nor .getScreenCTM.
For this viewer there is a workaround:
http://www.carto.net/papers/svg/gui/mapApp/
And here is a tooltip example that works in all browsers:
http://www.carto.net/papers/svg/gui/tooltips/index.svg
All the best,
Andreas
Dylan Browne wrote:
Hi,
(Not strictly a Batik Posting, although I am using Batik DOM to create my
SVG, so I hope that almost counts...!)
I am using JavaScript "evt.clientX" and "evt.clientY" (I have also tried
"screenX") to retrieve the co-ordinates of a mouseover event, and some extra
code then displays a label using these coordinates. (In essence, I'm
creating a souped-up tool-tip).
This works fine in standard view, but once the SVG document has been zoomed,
the co-ordinates returned are no longer relative to the original
document,(as, of course, I would expect :). I'd be grateful if someone could
point me towards the correct JS syntax so the coordinates I return are in
relation to my zoomed/panned document.
Thanks a lot in advance for any help,
Regards,
Dylan
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Andreas Neumann
Institute of Cartography
ETH Zurich
Wolfgang-Paulistrasse 15
CH-8093 Zurich, Switzerland
Phone: ++41-44-633 3031, Fax: ++41-44-633 1153
e-mail: [EMAIL PROTECTED]
www: http://www.carto.net/neumann/
SVG.Open: http://www.svgopen.org/
Carto.net: http://www.carto.net/
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