I've attached a small test case to show the problem. If I bring the cursor down the window until it touches the top of the text then I see negative client coordinates printed out. (The zero point on the Y axis seems like it may be at the baseline of the text.) Do you see the same?
----- Original Message ----- From: "Thomas DeWeese" <[EMAIL PROTECTED]> To: "Batik Users" <[EMAIL PROTECTED]> Sent: Wednesday, August 20, 2003 10:55 AM Subject: Re: getCharNumAtPosition trouble > 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] > >
<<attachment: TextTest.svg>>
TextTest.java
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