Hi Michael,
Thanks for the prompt reply. Yes, I would like to have look at your code if you don't mind as drawing bounding boxes around elements is precisely what I am trying to do! I am only just starting out with Batik and SVG in general so any help would be warmly appreciated. -JCT From: Bishop, Michael W. CONTR J9C880 [mailto:[EMAIL PROTECTED] Sent: Thursday, 16 October 2008 10:30 To: batik-users@xmlgraphics.apache.org Subject: RE: Querying the canvas for on-screen details It's possible I believe, just not simple. Someone who knows more might correct me on this. It would be something like this: // This is the element in question. Element element; SVGLocatable locatable = (SVGLocatable) element; SVGMatrix matrix = locatable.getScreenCTM(); This is where I'm a little fuzzy. I think you'd leave the matrix alone, but you might have to call inverse() on it. What you're going for is a transform (matrix) that maps screen coordinates to element coordinates. I think leaving it alone means that putting a document point through the matrix will transform it to a screen point. >From that transform, you should be able to derive a scale value, but you may need to remove rotate/skew/shear first in order to find the scale value. Ultimately you want to query your element for its stroke-width and multiply it by the appropriate scale value. See if that gets you anywhere. I do something similar in order to properly draw bounding boxes around my elements. I can provide some code if this is the path you're trying to go down. Michael _____ From: John C. Turnbull [mailto:[EMAIL PROTECTED] Sent: Wed 10/15/2008 7:02 PM To: batik-users@xmlgraphics.apache.org Subject: Querying the canvas for on-screen details Is it possible to determine the exact position and dimensions of an element on the screen after scaling has been applied from within a Java program? For example, I may have a line of thickness 2 which is actually displayed as 8 pixels wide on the screen when it is scaled. I would like to be able to query the SVG canvas and get that value of 8 returned. Thanks, -JCT
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