Denis Bohm wrote:
I checked out the lastest CVS and am trying that. The root of the problem
seems to be that I'm getting negative numbers from MouseEvent.getClientY
when I point at the center of the text. This seems wrong. Shouldn't I only
get positive values since they are with respect to the upper left of the
canvas?
If this is before you apply the matrix yes you should only get positive
values. There must be something odd about your setup as I have never seen
this happen. I'm sure a standalone version of the problem would help immensely.
BTW: Here is the SVG that I'm using:
<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.0//EN"
"http://www.w3.org/TR/2001/REC-SVG-20010904/DTD/svg10.dtd"; [
]>
<svg width="220" height="60" viewBox="0 0 220 60">
<text id="expression.0" transform="matrix(1 0 0 1 0 20)">if (true or
false) then {'foo'} else {'bar', 'zip'}</text>
<text id="result.0" transform="matrix(1 0 0 1 0 40)">result</text>
</svg>
Nothing looks particularly odd (other than the use of matrix rather
than 'translate(0,20)' or a simple y="20" on the text - but you probably just
cribbed from Illustrator :)
----- Original Message -----
From: "Thomas DeWeese" <[EMAIL PROTECTED]>
To: "Batik Users" <[EMAIL PROTECTED]>
Sent: Wednesday, August 20, 2003 5:03 AM
Subject: Re: getCharNumAtPosition trouble
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.
---------------------------------------------------------------------
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
---------------------------------------------------------------------
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
---------------------------------------------------------------------
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
