package net.sf.latexdraw.parsers.svg;
import java.text.ParseException;
import net.sf.latexdraw.parsers.svg.parsers.SVGLengthParser;
import org.w3c.dom.Node;
/**
* Defines the SVG tag <code>marker</code>.<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>
* 11/04/07<br>
* @author Arnaud BLOUIN
* @version 3.0
* @since 0.1
*/
public class SVGMarkerElement extends SVGElement {
/**
* {@link SVGElement#SVGElement(Node, SVGElement)}
* @param owner The owner document.
*/
public SVGMarkerElement(final SVGDocument owner) {
super(owner);
setNodeName(SVGElements.SVG_MARKER);
}
/**
* {@link SVGElement#SVGElement(Node, SVGElement)}
*/
public SVGMarkerElement(final Node n, final SVGElement p) throws MalformedSVGDocument {
super(n, p);
}
/**
* @return The x-axis coordinate of the reference point which is to be aligned exactly at the marker position.
* @since 0.1
*/
public double getRefX() {
final String v = getAttribute(getUsablePrefix()+SVGAttributes.SVG_REF_X);
double refx;
try { refx = v==null ? 0 : new SVGLengthParser(v).parseCoordinate().getValue(); }
catch(final ParseException e) { refx = 0; }
return refx;
}
/**
* @return The y-axis coordinate of the reference point which is to be aligned exactly at the marker position.
* @since 0.1
*/
public double getRefY() {
final String v = getAttribute(getUsablePrefix()+SVGAttributes.SVG_REF_Y);
double refy;
try { refy = v==null ? 0 : new SVGLengthParser(v).parseCoordinate().getValue(); }
catch(final ParseException e) { refy = 0; }
return refy;
}
/**
* @return Represents the width of the viewport into which the marker is to be fitted when it is rendered.
* @since 0.1
*/
public double getMarkerWidth() {
final String v = getAttribute(getUsablePrefix()+SVGAttributes.SVG_MARKER_WIDTH);
double markerW;
try { markerW = v==null ? 3 : new SVGLengthParser(v).parseLength().getValue(); }
catch(final ParseException e) { markerW = 3; }
return markerW;
}
/**
* @return Represents the height of the viewport into which the marker is to be fitted when it is rendered.
* @since 0.1
*/
public double getMarkerHeight() {
final String v = getAttribute(getUsablePrefix()+SVGAttributes.SVG_MARKER_HEIGHT);
double markerH;
try { markerH = v==null ? 3 : new SVGLengthParser(v).parseCoordinate().getValue(); }
catch(final ParseException e) { markerH = 3; }
return markerH;
}
/**
* @return The coordinate system for attributes markerWidth, markerHeight and the contents of the 'marker'.
* @since 0.1
*/
public String getMarkerUnits() {
final String v = getAttribute(getUsablePrefix()+SVGAttributes.SVG_MARKER_UNITS);
return v==null || !SVGAttributes.SVG_UNITS_VALUE_STROKE.equals(v) &&
!SVGAttributes.SVG_UNITS_VALUE_USR.equals(v) ? SVGAttributes.SVG_UNITS_VALUE_STROKE : v;
}
@Override
public boolean checkAttributes() {
return getMarkerWidth()>=0 && getMarkerHeight()>=0;
}
@Override
public boolean enableRendering() {
return getMarkerWidth()>0 && getMarkerHeight()>0;
}
}