| gvSIG desktop 1

/* 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.layers;

import java.util.ArrayList;

import java.util.StringTokenizer;

import org.cresques.io.GeoRasterFile;

import org.cresques.io.raster.RasterFilterStackManager;

import com.iver.utiles.XMLEntity;

/**

 * 

 * @author Nacho Brodin <brodin_ign@gva.es>

 *

 * Esta clase almacena el estado de un raster en cuanto a las caracteristicas

 * de opacidad, bandas y filtros. Estas caracter?sticas pueden ser salvadas a 

 * un xml y recuperadas por la capa a trav?s de las funciones setXMLEntity y 

 * getXMLEntity 

 */

public class StatusLayerRaster implements StatusRasterInterface{

        public String                                         clase = "com.iver.cit.gvsig.fmap.layers.StatusLayerRaster";

        //Valor de opacidad global de la imagen

        public int                                                transparency = 100;

        //(Selecci?n de bandas)N?mero de banda  asignado al Rojo, verde y azul         

        public int                                                 bandR = 0;

        public int                                                 bandG = 1;

        public int                                                 bandB = 2;

        //Ficheros cargados en un PxRaster 

        public ArrayList                                files = new ArrayList();

        //Filtros para poder montar una nueva pila

        public ArrayList                                filters = new ArrayList();

        /* (non-Javadoc)

         * @see com.iver.cit.gvsig.fmap.layers.StatusRasterInterface#setXMLEntity(com.iver.utiles.XMLEntity)

         */

        public void setXMLEntity(XMLEntity xml, FLyrRaster layer)throws XMLException {

                if (xml.contains("raster.opacityLevel")) {

                        transparency = xml.getIntProperty("raster.opacityLevel");

                }

                if (xml.contains("raster.bandR")) {

                        bandR = xml.getIntProperty("raster.bandR");

                } 

                if (xml.contains("raster.bandG")) {

                        bandG = xml.getIntProperty("raster.bandG");

                }

                if (xml.contains("raster.bandB")) {

                        bandB = xml.getIntProperty("raster.bandB");

                }

                int cont = 0;

                while(true && cont<50){

                        if (xml.contains("raster.file"+cont)) {

                                files.add(xml.getStringProperty("raster.file"+cont));

                                cont++;

                        }else 

                                break;

                }

                //Recuperamos las propiedades de los filtros

                for(int i=0;i<xml.getPropertyCount();i++){

                        if(xml.getPropertyName(i).startsWith("filter.")){

                                filters.add(xml.getPropertyName(i)+"="+xml.getPropertyValue(i));

                                //System.out.println("==>Recuperando "+xml.getPropertyName(i)+"="+xml.getPropertyValue(i));

                        }

                }

        }

        /* (non-Javadoc)

         * @see com.iver.cit.gvsig.fmap.layers.StatusRasterInterface#getXMLEntity(com.iver.utiles.XMLEntity)

         */

        public void getXMLEntity(XMLEntity xml, boolean loadClass, FLyrRaster layer) throws XMLException {

                if(loadClass)

                        xml.putProperty("raster.class", clase);

                if(transparency!=255)

                        xml.putProperty("raster.opacityLevel", ""+transparency);

                xml.putProperty("raster.bandR", ""+bandR);

                xml.putProperty("raster.bandG", ""+bandG);

                xml.putProperty("raster.bandB", ""+bandB);

                if(files!=null && files.size()!=0){

                        for(int i=0;i<files.size();i++)

                                xml.putProperty("raster.file"+i, ""+((String)files.get(i)));

                }

                //salvamos la pila de filtros

                RasterFilterStackManager stackManager 

                        = new RasterFilterStackManager(layer.getSource().getFilterStack());

                ArrayList l = stackManager.getStringsFromStack();

                for(int i=0;i<l.size();i++){

                        xml.putProperty(getElem((String)l.get(i)), getValue((String)l.get(i)));

                        //System.out.println("==>"+getElem((String)l.get(i))+" "+getValue((String)l.get(i)));

                }

        }

        /**

         * Obtiene el valor de una cadena de la forma elemento=valor

         * @param cadena 

         * @return

         */

        private String getValue(String cadena){

                if(cadena!=null)

                        return cadena.substring(cadena.indexOf("=")+1, cadena.length());

                else 

                        return null;

        }

        /**

         * Obtiene el elemento de una cadena de la forma elemento=valor

         * @param cadena 

         * @return

         */

        private String getElem(String cadena){

                if(cadena!=null)

                        return cadena.substring(0, cadena.indexOf("="));

                else 

                        return null;

        }

        /* (non-Javadoc)

         * @see com.iver.cit.gvsig.fmap.layers.StatusRasterInterface#getFilters()

         */

        public ArrayList getFilters(){

                return this.filters;

        }

        /* (non-Javadoc)

         * @see com.iver.cit.gvsig.fmap.layers.StatusRasterInterface#applyStatus(com.iver.cit.gvsig.fmap.layers.RasterFileAdapter)

         */

        public void applyStatus(FLyrRaster layer){

                //Asigna la transparencia

                if(transparency!=255)

                        layer.getSource().setTransparency(transparency);

                //Crea la pila de filtros a partir de las propiedades recuperadas desde el XML

                RasterFilterStackManager stackManager 

                        = new RasterFilterStackManager(layer.getSource().getFilterStack());

                stackManager.createStackFromStrings(this.filters);

                //Eliminamos el fichero inicial y cargamos las bandas si hay para que se carguen 

                //en el orden correcto

                if(files.size()!=0){

                        layer.delFile(layer.getSource().getFiles()[0].getName());

                        for(int i=0;i<files.size();i++)

                                layer.addFiles((String)files.get(i));

                }

                //Asigna las bandas

                layer.getSource().setBand(GeoRasterFile.RED_BAND, bandR);

                layer.getSource().setBand(GeoRasterFile.GREEN_BAND, bandG);

                layer.getSource().setBand(GeoRasterFile.BLUE_BAND, bandB);

        }

}