package net.sf.latexdraw.parsers.svg;
import java.io.File;
import java.net.URI;
import java.net.URISyntaxException;
import java.text.ParseException;
import net.sf.latexdraw.parsers.svg.parsers.SVGLengthParser;
import org.w3c.dom.Node;
/**
* Defines the SVG element defining a picture.<br>
*<br>
* This file is part of LaTeXDraw.<br>
* Copyright (c) 2005-2014 Arnaud BLOUIN<br>
*<br>
* LaTeXDraw is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.<br>
*<br>
* LaTeXDraw is distributed without any warranty; without even the
* implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
* PURPOSE. See the GNU General Public License for more details.<br>
*<br>
* 09/11/07<br>
* @author Arnaud BLOUIN
* @version 3.0
*/
public class SVGImageElement extends SVGElement {
/**
* {@link SVGImageElement#SVGImageElement(SVGDocument, String)}
* @param n The node.
* @param p The parent SVG element.
* @throws MalformedSVGDocument If the element is not well formed.
*/
public SVGImageElement(final Node n, final SVGElement p) throws MalformedSVGDocument {
super(n, p);
}
/**
* Creates an SVG image.
* @param doc The owner document.
* @param pathSource The path of the picture.
* @since 0.1
*/
public SVGImageElement(final SVGDocument doc, final String pathSource) {
super(doc);
if(pathSource==null)
throw new IllegalArgumentException();
setNodeName(SVGElements.SVG_IMAGE);
setAttribute("xlink:href", pathSource);//$NON-NLS-1$
}
/**
* @return The value of the X attribute (0 if there it does not exist or it is not a length).
* @since 0.1
*/
public double getX() {
final String v = getAttribute(getUsablePrefix()+SVGAttributes.SVG_X);
double x;
try { x = v==null ? 0 : new SVGLengthParser(v).parseCoordinate().getValue(); }
catch(final ParseException e) { x = 0; }
return x;
}
/**
* @return The value of the Y attribute (0 if there it does not exist or it is not a length).
* @since 0.1
*/
public double getY() {
final String v = getAttribute(getUsablePrefix()+SVGAttributes.SVG_Y);
double y;
try { y = v==null ? 0 : new SVGLengthParser(v).parseCoordinate().getValue(); }
catch(final ParseException e) { y = 0; }
return y;
}
/**
* @return The value of the <code>width</code> attribute.
* @since 0.1
*/
public double getWidth() {
final String v = getAttribute(getUsablePrefix()+SVGAttributes.SVG_WIDTH);
double width;
try { width = v==null ? Double.NaN : new SVGLengthParser(v).parseLength().getValue(); }
catch(final ParseException e) { width = Double.NaN; }
return width;
}
/**
* @return The value of the <code>height</code> attribute.
* @since 0.1
*/
public double getHeight() {
final String v = getAttribute(getUsablePrefix()+SVGAttributes.SVG_HEIGHT);
double height;
try { height = v==null ? Double.NaN : new SVGLengthParser(v).parseLength().getValue(); }
catch(final ParseException e) { height = Double.NaN; }
return height;
}
/**
* @return The URI reference.
* @since 0.1
*/
public String getURI() {
return getAttribute("xlink:href");//$NON-NLS-1$
}
@Override
public boolean checkAttributes() {
final double vWidth = getWidth();
final double vHeight = getHeight();
return !(Double.isNaN(vWidth) || Double.isNaN(vHeight) || vWidth < 0 || vHeight < 0);
}
@Override
public boolean enableRendering() {
if(getWidth()==0 || getHeight()==0 || getURI()==null)
return false;
try {
final URI uri = new URI(getURI());
final File f = new File(uri.getPath());
if(!f.exists() || !f.canRead())
return false;
}
catch(final URISyntaxException e) { return false; }
return true;
}
}