Application: gvSIG desktop

/*

 * Created on 13-jul-2004

 *

 * TODO To change the template for this generated file go to

 * Window - Preferences - Java - Code Generation - Code and Comments

 */

/* gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana

 *

 * Copyright (C) 2004 IVER T.I. and Generalitat Valenciana.

 *

 * This program 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.

 *

 * This program is distributed in the hope that it will be useful,

 * but 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.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program; if not, write to the Free Software

 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307,USA.

 *

 * For more information, contact:

 *

 *  Generalitat Valenciana

 *   Conselleria d'Infraestructures i Transport

 *   Av. Blasco Ib??ez, 50

 *   46010 VALENCIA

 *   SPAIN

 *

 *      +34 963862235

 *   gvsig@gva.es

 *      www.gvsig.gva.es

 *

 *    or

 *

 *   IVER T.I. S.A

 *   Salamanca 50

 *   46005 Valencia

 *   Spain

 *

 *   +34 963163400

 *   dac@iver.es

 */

package com.iver.cit.gvsig.fmap.core.v02;

import com.iver.cit.gvsig.fmap.core.FPoint2D;

import com.iver.cit.gvsig.fmap.core.FShape;

import com.iver.utiles.XMLEntity;

import com.vividsolutions.jts.geom.Geometry;

import com.vividsolutions.jts.geom.Point;

import org.apache.batik.ext.awt.geom.PathLength;

import java.awt.geom.Point2D;

/**

 * Se utiliza para etiquetar. Las capas vectoriales tienen un arrayList

 * (m_labels) de FLabel, un FLabel por cada registro.

 *

 * @author FJP

 */

public class FLabel implements Cloneable {

        public final static byte LEFT_TOP = 0;

        public final static byte LEFT_CENTER = 1;

        public final static byte LEFT_BOTTOM = 2;

        public final static byte CENTER_TOP = 6;

        public final static byte CENTER_CENTER = 7;

        public final static byte CENTER_BOTTOM = 8;

        public final static byte RIGHT_TOP = 12;

        public final static byte RIGHT_CENTER = 13;

        public final static byte RIGHT_BOTTOM = 14;

        private String m_Str = null;

        private Point2D m_Orig = null;

        private double m_Height;

        /**

         * <code>m_rotation</code> en grados, NO en radianes. Se convierte en

         * radianes al dibujar.

         */

        private double m_rotation;

        /**

         * Valores posibles para <code>m_Justification</code>: Left/Top = 0

         * Center/Top = 6                Right/Top = 12 Left/Center = 1

         * Center/Center = 7            Right/Center = 13 Left/Bottom = 2

         * Center/Bottom = 8            Right/Bottom = 14

         */

        private byte m_Justification = LEFT_BOTTOM; // Por defecto 

        /**

         * Crea un nuevo FLabel.

         */

        public FLabel() {

        }

        /**

         * Crea un nuevo FLabel.

         *

         * @param str DOCUMENT ME!

         */

        public FLabel(String str) {

                m_Str = str;

        }

        /**

         * Crea un nuevo FLabel.

         *

         * @param str

         * @param pOrig

         * @param heightText

         * @param rotation

         */

        public FLabel(String str, Point2D pOrig, double heightText, double rotation) {

                m_Str = str;

                m_Orig = pOrig;

                m_Height = heightText;

                m_rotation = rotation;

        }

        /**

         * Introduce un nuevo FLabel al ya existente.

         *

         * @param label

         */

        public void setFLabel(FLabel label) {

                m_Str = label.m_Str;

                m_Orig = label.m_Orig;

                m_Height = label.m_Height;

                m_rotation = label.m_rotation;

        }

        /**

         * Clona el FLabel.

         *

         * @return Object clonado.

         */

        public Object clone() {

                return new FLabel(m_Str, m_Orig, m_Height, m_rotation);

        }

        /**

         * Devuelve la altura del Label.

         *

         * @return Returns the m_Height.

         */

        public double getHeight() {

                return m_Height;

        }

        /**

         * Devuelve el punto de origen.

         *

         * @return Returns the m_Orig.

         */

        public Point2D getOrig() {

                return m_Orig;

        }

        /**

         * Devuelve la rotaci?n.

         *

         * @return Returns the m_rotation.

         */

        public double getRotation() {

                return m_rotation;

        }

        /**

         * Devuelve un String con el texto del Label.

         *

         * @return Returns the m_Str.

         */

        public String getString() {

                return m_Str;

        }

        /**

         * Introduce la altura del Label.

         *

         * @param height The m_Height to set.

         */

        public void setHeight(double height) {

                m_Height = height;

        }

        /**

         * Introduce el punto de origen del Label.

         *

         * @param orig The m_Orig to set.

         */

        public void setOrig(Point2D orig) {

                m_Orig = orig;

        }

        /**

         * Introduce la rotaci?n a aplicar al Label.

         *

         * @param m_rotation The m_rotation to set.

         */

        public void setRotation(double m_rotation) {

                this.m_rotation = m_rotation;

        }

        /**

         * Introduce el texto del Label.

         *

         * @param str The m_Str to set.

         */

        public void setString(String str) {

                m_Str = str;

        }

        /**

         * Valores posibles para <code>m_Justification</code>: Left/Top = 0

         * Center/Top = 6                Right/Top = 12 Left/Center = 1

         * Center/Center = 7            Right/Center = 13 Left/Bottom = 2

         * Center/Bottom = 8            Right/Bottom = 14

         *

         * @return byte.

         */

        public byte getJustification() {

                return m_Justification;

        }

        /**

         * Valores posibles para <code>m_Justification</code>: Left/Top = 0

         * Center/Top = 6                Right/Top = 12 Left/Center = 1

         * Center/Center = 7            Right/Center = 13 Left/Bottom = 2

         * Center/Bottom = 8            Right/Bottom = 14

         *

         * @param justification byte

         */

        public void setJustification(byte justification) {

                m_Justification = justification;

        }

        /**

         * Devuelve un Objeto XMLEntity con la informaci?n los atributos necesarios

         * para poder despu?s volver a crear el objeto original.

         *

         * @return XMLEntity.

         */

        public XMLEntity getXMLEntity() {

                XMLEntity xml = new XMLEntity();

                xml.putProperty("className",this.getClass().getName());

                xml.setName("flabel");

                xml.putProperty("m_Height", m_Height);

                xml.putProperty("m_Justification", (int) m_Justification);

                xml.putProperty("m_OrigX", m_Orig.getX());

                xml.putProperty("m_OrigY", m_Orig.getY());

                xml.putProperty("m_rotation", m_rotation);

                xml.putProperty("m_Str", m_Str);

                return xml;

        }

        /**

         * Crea un Objeto de esta clase a partir de la informaci?n del XMLEntity.

         *

         * @param xml XMLEntity

         *

         * @return Objeto de esta clase.

         */

        public static FLabel createFLabel(XMLEntity xml) {

                FLabel label = new FLabel();

                label.setHeight(xml.getDoubleProperty("m_Height"));

                label.setJustification((byte) xml.getIntProperty("m_Justification"));

                label.setOrig(new Point2D.Double(xml.getDoubleProperty("m_OrigX"),

                                xml.getDoubleProperty("m_OrigY")));

                label.setString("m_Str");

                return label;

        }

        /**

         * M?todo est?tico que crea un FLabel a partir de un FShape.

         *

         * @param shp FShape.

         *

         * @return nuevo FLabel creado.

         */

        public static FLabel createFLabel(FShape shp) {

                float angle;

                float x;

                float y;

                Point2D pAux = null;

                FLabel label = new FLabel();

                switch (shp.getShapeType()) {

                        case FShape.POINT:

                                pAux = new Point2D.Double(((FPoint2D) shp).getX(),

                                                ((FPoint2D) shp).getY());

                                label.setOrig(pAux);

                                break;

                        case FShape.LINE:

                        case FShape.ARC:

                        case FShape.CIRCLE:

                        case FShape.ELLIPSE:

                                PathLength pathLen = new PathLength(shp);

                                // if (pathLen.lengthOfPath() < width / mT.getScaleX()) return;

                                float midDistance = pathLen.lengthOfPath() / 2;

                                pAux = pathLen.pointAtLength(midDistance);

                                angle = pathLen.angleAtLength(midDistance);

                                if (angle < 0) {

                                        angle = angle + (float) (2 * Math.PI);

                                }

                                if ((angle > (Math.PI / 2)) && (angle < ((3 * Math.PI) / 2))) {

                                        angle = angle - (float) Math.PI;

                                }

                                label.setRotation(Math.toDegrees(angle));

                                label.setOrig(pAux);

                                break;

                        case FShape.POLYGON:

                                Geometry geo = FConverter.java2d_to_jts(shp);

                                if (geo == null) {

                                        return null;

                                }

                                Point pJTS = geo.getCentroid();

                                if (pJTS == null) {

                                        label = null;

                                } else {

                                        FShape pLabel = FConverter.jts_to_java2d(pJTS);

                                        label.setRotation(0);

                                        label.setOrig(new Point2D.Double(

                                                        ((FPoint2D) pLabel).getX(),

                                                        ((FPoint2D) pLabel).getY()));

                                }

                                break;

                } // switch

                return label;

        }

}