Denis Bohm wrote:
I'm trying to track the cursor movement across some text to highlight the
character that the cursor is over. In my svg I have a text element that
contains a tspan element. I tried the following on mousemove for the text,
but always get -1 for the character index:
This I believe is because you should use getClientX/Y not screenX/Y.
Rereading the spec it is unclear which coordinate system getScreenCTM should
transform to (clientX/Y has 0,0 at the upper left of the canvas, screenX/Y
has 0,0 at the upper left of the physical device).
I will send a question to the SVG Working Group on this to get a clarification
of what is the correct answer.
SVGRect extent = parent.getExtentOfChar(0);
System.out.println(extent.getX() + " " + extent.getY());
So I tried the following, which also gives -1:
point.setX(extent.getX() + 1);
point.setY(extent.getY() + 1);
index = parent.getCharNumAtPosition(point);
System.out.println(index);
Any idea what I might be doing wrong?
There was a bug in getExtentOfChar which I just fixed in CVS. You can
check the commit message to get the patches, or just use CVS to update.
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