SVGDimensionGenerator.java

/*******************************************************************************
 * Copyright 2010 Simon Mieth
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 ******************************************************************************/

package org.kabeja.svg.generators;

import java.util.Map;

import org.kabeja.common.Block;
import org.kabeja.common.DraftEntity;
import org.kabeja.common.LineWidth;
import org.kabeja.entities.Dimension;
import org.kabeja.math.Point3D;
import org.kabeja.math.TransformContext;
import org.kabeja.svg.SVGConstants;
import org.kabeja.svg.SVGContext;
import org.kabeja.svg.SVGUtils;
import org.xml.sax.ContentHandler;
import org.xml.sax.SAXException;
import org.xml.sax.helpers.AttributesImpl;


public class SVGDimensionGenerator extends AbstractSVGSAXGenerator {
    public void toSAX(ContentHandler handler, Map svgContext, DraftEntity entity,
        TransformContext transformContext) throws SAXException {
        Dimension dimension = (Dimension) entity;

        Block block = dimension.getDocument()
        .getBlock(dimension.getDimensionBlock());
        if (block != null) {
           
            AttributesImpl attr = new AttributesImpl();
            StringBuffer buf = new StringBuffer();

            buf.append("translate(");
            buf.append((dimension.getInsertPoint().getX()));
            buf.append(SVGConstants.SVG_ATTRIBUTE_PATH_PLACEHOLDER);
            buf.append((dimension.getInsertPoint().getY()));
            buf.append(")");

            Point3D referencePoint = block.getReferencePoint();

            if ((referencePoint.getX() != 0.0) ||
                    (referencePoint.getY() != 0.0)) {
                buf.append(" translate(");
                buf.append(SVGUtils.formatNumberAttribute(referencePoint.getX()));
                buf.append(SVGConstants.SVG_ATTRIBUTE_PATH_PLACEHOLDER);
                buf.append(SVGUtils.formatNumberAttribute(referencePoint.getY()));
                buf.append(")");
            }

            SVGUtils.addAttribute(attr, "transform", buf.toString());

            super.setCommonAttributes(attr, svgContext, dimension);

   
            if (svgContext.containsKey(SVGContext.LAYER_STROKE_WIDTH)) {
    			LineWidth lw = (LineWidth) svgContext.get(SVGContext.LAYER_STROKE_WIDTH);
    			SVGUtils.addAttribute(attr,
    					SVGConstants.SVG_ATTRIBUTE_STROKE_WITDH, SVGUtils
    							.lineWidthToStrokeWidth(lw));
    		}
            
            SVGUtils.startElement(handler, SVGConstants.SVG_GROUP, attr);
            attr = new AttributesImpl();

            attr.addAttribute(SVGConstants.XMLNS_NAMESPACE, "xlink",
                "xmlns:xlink", "CDATA", SVGConstants.XLINK_NAMESPACE);
            attr.addAttribute(SVGConstants.XLINK_NAMESPACE, "href",
                "xlink:href", "CDATA",
                "#" + SVGUtils.toValidateID(block.getID()));

            SVGUtils.emptyElement(handler, SVGConstants.SVG_USE, attr);

            SVGUtils.endElement(handler, SVGConstants.SVG_GROUP);
        }

        // else if (dimType == TYPE_LINEAR || dimType == 32 || dimType == 160) {
        // LinearDimensionOutputter out = new LinearDimensionOutputter(
        // this);
        // out.output(handler);
        // }
    }
}