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 org.gvsig.fmap.geom.utils;

import java.awt.Color;

import java.awt.Font;

import java.awt.Graphics2D;

import java.awt.Shape;

import java.awt.geom.AffineTransform;

import java.awt.geom.Point2D;

import java.awt.geom.Rectangle2D;

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

import org.gvsig.fmap.geom.aggregate.MultiPoint;

import org.gvsig.fmap.geom.exception.CreateGeometryException;

import org.gvsig.fmap.geom.util.Converter;

import org.gvsig.fmap.mapcontext.ViewPort;

import org.gvsig.fmap.mapcontext.rendering.symbols.FGraphicUtilities;

import org.gvsig.fmap.mapcontext.rendering.symbols.FSymbol;

import org.gvsig.fmap.mapcontext.rendering.symbols.ISymbol;

import com.iver.utiles.XMLEntity;

import com.vividsolutions.jts.geom.Geometry;

import com.vividsolutions.jts.geom.Point;

/**

 * 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;

        public static final double SQUARE = Math.sqrt(2.0);

        /**

         * <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

        private int m_Style;

        private Rectangle2D boundBox;

        private Color color;

        private static Font font=new Font("Dialog",Font.PLAIN,12);

        /**

         * 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() {

                FLabel label=new FLabel(m_Str, m_Orig, m_Height, m_rotation);

                label.boundBox=(Rectangle2D)boundBox.clone();

                return label;

        }

        /**

         * 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 = Math.toRadians(-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 una Geometry.

         *

         * @param geom Geometry.

         *

         * @return nuevo FLabel creado.

         * @throws CreateGeometryException 

         */

        public static FLabel createFLabel(org.gvsig.fmap.geom.Geometry geom) throws CreateGeometryException {

                float angle;

                Point2D pAux = createLabelPoint(geom);

                FLabel label = new FLabel();

                label.setOrig(pAux);

                switch (geom.getType()) {

                        case org.gvsig.fmap.geom.Geometry.TYPES.CURVE:

                           PathLength pathLen = new PathLength(geom);

                                float midDistance = pathLen.lengthOfPath() / 2;

                                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));

                                break;

                } // switch

                return label;

        }

        public static Point2D createLabelPoint(org.gvsig.fmap.geom.Geometry geom) throws CreateGeometryException {

                Point2D pAux = null;

                switch (geom.getType()) {

                        case org.gvsig.fmap.geom.Geometry.TYPES.POINT:

                    pAux = new Point2D.Double(((org.gvsig.fmap.geom.primitive.Point) geom).getX(),

                                                ((org.gvsig.fmap.geom.primitive.Point) geom).getY());

                                return pAux;

                        case org.gvsig.fmap.geom.Geometry.TYPES.CURVE:

                    PathLength pathLen = new PathLength(geom);

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

                                float midDistance = pathLen.lengthOfPath() / 2;

                                pAux = pathLen.pointAtLength(midDistance);

                                return pAux;

                        case org.gvsig.fmap.geom.Geometry.TYPES.SURFACE:

                    Geometry geo = Converter.geometryToJts(geom);

                                if (geo == null) {

                                        return null;

                                }

                                Point pJTS = geo.getCentroid();

                                if (pJTS != null) {

                                        org.gvsig.fmap.geom.Geometry pLabel = Converter.jtsToGeometry(pJTS);

                                        return new Point2D.Double(((org.gvsig.fmap.geom.primitive.Point) pLabel).getX(),

                                                        ((org.gvsig.fmap.geom.primitive.Point) pLabel).getY());

                                }

                                break;

            case org.gvsig.fmap.geom.Geometry.TYPES.MULTIPOINT:

                    int num=((MultiPoint)geom).getPrimitivesNumber();

                            Rectangle2D r=null;

                            if (num>0){

                                    r= ((MultiPoint)geom).getPointAt(0).getBounds2D();

                                    for (int i=1;i<num;i++){

                                            org.gvsig.fmap.geom.primitive.Point fp=((MultiPoint)geom).getPointAt(i);

                                            r.add(new Point2D.Double(fp.getX(),fp.getY()));

                                    }

                            }

                            if (r!=null)

                            return new Point2D.Double(r.getCenterX(),r.getCenterY());

                            break;

                } // switch

                                return null;

        }

        public void setTypeFont(String t) {

                font=Font.getFont(t,font);

        }

        public int getStyle() {

                return m_Style;

        }

        public void setBoundBox(Rectangle2D boundBox) {

                this.boundBox=boundBox;

        }

        public Rectangle2D getBoundBox(){

                return boundBox;

        }

        public Rectangle2D getBoundingBox(ViewPort vp) {

                return vp.fromMapRectangle(boundBox);

        }

        public void setColor(int i) {

                color=new Color(i);

        }

        public Color getColor() {

                return color;

        }

        /*public Font getFont(AffineTransform at,boolean isInPixels){

                if (!isInPixels) {

                        float alturaPixels = (float) ((getHeight() * at.getScaleX())*SQUARE);

                        //Font nuevaFuente = font.deriveFont(alturaPixels);//new Font(getTypeFont(),getStyle(),(int)alturaPixels);

                        return font.deriveFont(alturaPixels);

                }

                //Font nuevaFuente = font.deriveFont((float)(getHeight()*SQUARE));//new Font(getTypeFont(),getStyle(),(int)(getHeight()*SQUARE));

                return font;//font.deriveFont((float)(getHeight()*SQUARE));

        }*/

        public Font getFont(AffineTransform at,Font font){

                float alturaPixels = (float) ((getHeight() * at.getScaleX())*SQUARE);

                //return font.deriveFont(alturaPixels);

        return font.deriveFont(font.getStyle(),alturaPixels);

        }

        /**

         * Por ahora, para extender el renderizado de etiquetas, habr?a que

         * crear otro FLabel y reimplementar este m?todo para que haga caso

         * a otros s?mbolos. Es decir, NO usar FGraphicUtilities

         * @param g

         * @param affineTransform

         * @param theShape

         * @param theSymbol

         */

        public void draw(Graphics2D g, AffineTransform affineTransform, Shape theShape, ISymbol theSymbol) {

        FGraphicUtilities.DrawLabel(g, affineTransform,

                (org.gvsig.fmap.geom.Geometry) theShape, (FSymbol) theSymbol, this);

        }

}