AbstractEntityHandler.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.dxf.parser.entities;

import org.kabeja.DraftDocument;
import org.kabeja.common.Layer;
import org.kabeja.common.LineType;
import org.kabeja.dxf.parser.DXFValue;
import org.kabeja.entities.Entity;
import org.kabeja.entities.util.Utils;

/**
 * @author <a href="mailto:simon.mieth@gmx.de">Simon Mieth </a>
 * 
 */
public abstract class AbstractEntityHandler implements DXFEntityHandler {
	public final static int ELEMENT_REFERENCE = 5;
	public final static int GROUPCODE_START_X = 10;
	public final static int GROUPCODE_START_Y = 20;
	public final static int GROUPCODE_START_Z = 30;
	public final static int END_X = 11;
	public final static int END_Y = 21;
	public final static int END_Z = 31;
	public final static int LAYER_NAME = 8;
	public final static int TRANSPARENCY = 440;
	public final static int COLOR_CODE = 62;
	public final static int COLORNAME = 430;
	public final static int COLOR_24BIT = 420;
	public final static int COLOR_TRANSPARENCY = 440;
	public final static int FLAGS = 70;
	public final static int EXTRUSION_X = 210;
	public final static int EXTRUSION_Y = 220;
	public final static int EXTRUSION_Z = 230;
	public final static int VISIBILITY = 60;
	public final static int LINE_TYPE = 6;
	public final static int LINE_TYPE_SCALE = 48;
	public final static int LINE_WEIGHT = 370;
	public final static int GROUPCODE_THICKNESS = 39;
	public final static int GROUPCODE_STYLENAME = 3;
	public final static int GROUPCODE_TEXT = 1;
	public final static int GROUPCODE_ROTATION_ANGLE = 50;
	public final static int GROUPCODE_MODELSPACE = 67;

	public final static int GROUPCODE_OWNER = 330;
	protected DraftDocument doc;

	private static Layer lastLayer;
	private boolean lastLayerPresent;

	public void setDocument(DraftDocument doc) {
		this.doc = doc;
	}

	protected void parseCommonProperty(int groupCode, DXFValue value, Entity entity) {
		switch (groupCode) {
		case ELEMENT_REFERENCE:
			entity.setID(Utils.parseIDString(value.getValue()));

			break;

		case LAYER_NAME:
			if (lastLayerPresent && lastLayer.getName().equals(value.getValue())) {
				entity.setLayer(lastLayer);
			} else {

				if (this.doc.containsLayer(value.getValue())) {
					Layer layer = this.doc.getLayer(value.getValue());
					entity.setLayer(layer);
					lastLayer = layer;
					lastLayerPresent = true;
				} else {
					Layer layer = new Layer();
					layer.setName(value.getValue());
					this.doc.addLayer(layer);
					entity.setLayer(layer);
					lastLayer = layer;
					lastLayerPresent = true;
				}
			}

			break;

		case FLAGS:
			entity.setFlags(value.getIntegerValue());

			break;

		case VISIBILITY:
			entity.setVisibile(!value.getBooleanValue());

			break;

		case LINE_TYPE:
			if (!value.getValue().equals("BYLAYER")) {
				if (this.doc.containsLineType(value.getValue())) {
					LineType ltype = this.doc.getLineType(value.getValue());
					entity.setLineType(ltype);
				} else {
					LineType ltype = new LineType();
					ltype.setName(value.getValue());
					this.doc.addLineType(ltype);
					entity.setLineType(ltype);
				}
			}
			break;

		case LINE_TYPE_SCALE:
			entity.setLinetypeScaleFactor(value.getDoubleValue());

			break;

		case COLOR_CODE:
			entity.setColor(value.getIntegerValue());

			break;

		case EXTRUSION_X:
			entity.getExtrusion().setX(value.getDoubleValue());

			break;

		case EXTRUSION_Y:
			entity.getExtrusion().setY(value.getDoubleValue());

			break;

		case EXTRUSION_Z:
			entity.getExtrusion().setZ(value.getDoubleValue());

			break;

		case COLOR_24BIT:
			String hexString = Integer.toHexString(value.getIntegerValue());
			if (hexString.length() == 6) {
				byte[] b = new byte[3];
				b[0] = (byte) Integer.parseInt(hexString.substring(0, 2), 16);
				b[1] = (byte) Integer.parseInt(hexString.substring(2, 4), 16);
				b[2] = (byte) Integer.parseInt(hexString.substring(4, 6), 16);
				entity.setColorRGB(b);
			}
			break;

		case COLOR_TRANSPARENCY:
			break;

		case LINE_WEIGHT:
			entity.setLineWeight(value.getIntegerValue());

			break;

		case GROUPCODE_THICKNESS:
			entity.setThickness(value.getDoubleValue());

			break;

		case GROUPCODE_MODELSPACE:
			entity.setModelSpace(value.getBooleanValue());
			break;

		case GROUPCODE_OWNER:
			entity.setOwnerID(Utils.parseIDString(value.getValue()));
			break;
		}
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.dxf2svg.parser.entities.EntityHandler#getEntityName()
	 */
	public abstract String getDXFEntityType();

	/*
	 * (non-Javadoc)
	 * 
	 * @see de.miethxml.kabeja.parser.Handler#releaseDXFDocument()
	 */
	public void releaseDocument() {
		this.doc = null;
	}
}