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svn-gvsig-desktop / tags / v1_0_2_Build_901 / libraries / libFMap / src / com / iver / cit / gvsig / fmap / layers / StatusLayerRaster.java @ 10571

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/* gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana
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*
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* Copyright (C) 2004 IVER T.I. and Generalitat Valenciana.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307,USA.
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*
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* For more information, contact:
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*
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*  Generalitat Valenciana
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*   Conselleria d'Infraestructures i Transport
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*   Av. Blasco Ib??ez, 50
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*   46010 VALENCIA
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*   SPAIN
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*
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*      +34 963862235
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*   gvsig@gva.es
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*      www.gvsig.gva.es
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*
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*    or
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*
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*   IVER T.I. S.A
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*   Salamanca 50
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*   46005 Valencia
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*   Spain
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*
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*   +34 963163400
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*   dac@iver.es
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*/
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package com.iver.cit.gvsig.fmap.layers;
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import java.util.ArrayList;
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import org.cresques.filter.RasterFilterStackManager;
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import org.cresques.io.GeoRasterFile;
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import com.iver.utiles.XMLEntity;
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/**
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 * Esta clase almacena el estado de un raster en cuanto a las caracteristicas
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 * de opacidad, bandas y filtros. Estas caracter?sticas pueden ser salvadas a 
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 * un xml y recuperadas por la capa a trav?s de las funciones setXMLEntity y 
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 * getXMLEntity
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 * 
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 * @author Nacho Brodin (brodin_ign@gva.es)
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 */
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public class StatusLayerRaster implements StatusRasterInterface{
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        public static String                         defaultClass = "com.iver.cit.gvsig.fmap.layers.StatusLayerRaster";
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        //Valor de opacidad global de la imagen
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        public int                                                transparency = 0;
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        //(Selecci?n de bandas)N?mero de banda  asignado al Rojo, verde y azul         
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        public int                                                 bandR = 0;
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        public int                                                 bandG = 1;
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        public int                                                 bandB = 2;
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        //Ficheros cargados en un PxRaster 
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        public ArrayList                                files = new ArrayList();
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        //Filtros para poder montar una nueva pila
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        public ArrayList                                filters = new ArrayList();
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        /* (non-Javadoc)
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         * @see com.iver.cit.gvsig.fmap.layers.StatusRasterInterface#setXMLEntity(com.iver.utiles.XMLEntity)
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         */
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        public void setXMLEntity(XMLEntity xml, RasterOperations layer)throws XMLException {
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                //Recuperamos las propiedades de los filtros
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                for(int i=0;i<xml.getPropertyCount();i++){
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                        if(xml.getPropertyName(i).startsWith("filter."))        
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                                filters.add(xml.getPropertyName(i)+"="+xml.getPropertyValue(i));
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                }
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                if (xml.contains("raster.opacityLevel")) {
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                        transparency = xml.getIntProperty("raster.opacityLevel");
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                }
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                if (xml.contains("raster.bandR")) {
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                        bandR = xml.getIntProperty("raster.bandR");
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                } 
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                if (xml.contains("raster.bandG")) {
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                        bandG = xml.getIntProperty("raster.bandG");
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                }
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                if (xml.contains("raster.bandB")) {
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                        bandB = xml.getIntProperty("raster.bandB");
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                }
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                int cont = 0;
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                while(true && cont<50){
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                        if (xml.contains("raster.file"+cont)) {
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                                files.add(xml.getStringProperty("raster.file"+cont));
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                                cont++;
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                        }else 
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                                break;
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                }
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        }
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        /* (non-Javadoc)
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         * @see com.iver.cit.gvsig.fmap.layers.StatusRasterInterface#getXMLEntity(com.iver.utiles.XMLEntity)
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         */
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        public void getXMLEntity(XMLEntity xml, boolean loadClass, RasterOperations layer) throws XMLException {
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                if(loadClass)
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                        xml.putProperty("raster.class", StatusLayerRaster.defaultClass);
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                if(transparency!=255)
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                        xml.putProperty("raster.opacityLevel", ""+transparency);
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                xml.putProperty("raster.bandR", ""+bandR);
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                xml.putProperty("raster.bandG", ""+bandG);
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                xml.putProperty("raster.bandB", ""+bandB);
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                if(files!=null && files.size()!=0){
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                        for(int i=0;i<files.size();i++)
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                                xml.putProperty("raster.file"+i, ""+((String)files.get(i)));
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                }
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                //Salvamos la pila de filtros.
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                //Si la pila es null (esto puede ocurrir cuando se abre un 
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                //proyecto que tiene WCS y no se abre la vista de este) entonces hay que leer los filtros
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                //que van a salvarse a disco directamente de la variable filters que es la que se ha cargado
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                //al hacer el setXMLEntity.
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                RasterFilterStackManager stackManager = null;
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                ArrayList l = null;
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                if(layer.getFilterStack()!=null){
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                        stackManager = new RasterFilterStackManager(layer.getFilterStack());
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                        l = stackManager.getStringsFromStack();
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                        if(l == null || l.size() == 0)
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                                l = filters;
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                }else
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                        l = filters;
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                for(int i=0;i<l.size();i++)
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                        xml.putProperty(getElem((String)l.get(i)), getValue((String)l.get(i)));
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        }
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        /**
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         * Obtiene el valor de una cadena de la forma elemento=valor
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         * @param cadena 
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         * @return
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         */
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        private String getValue(String cadena){
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                if(cadena!=null)
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                        return cadena.substring(cadena.indexOf("=")+1, cadena.length());
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                else 
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                        return null;
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        }
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        /**
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         * Obtiene el elemento de una cadena de la forma elemento=valor
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         * @param cadena 
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         * @return
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         */
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        private String getElem(String cadena){
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                if(cadena!=null)
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                        return cadena.substring(0, cadena.indexOf("="));
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                else 
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                        return null;
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        }
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        /* (non-Javadoc)
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         * @see com.iver.cit.gvsig.fmap.layers.StatusRasterInterface#getFilters()
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         */
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        public ArrayList getFilters(){
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                return this.filters;
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        }
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        /* (non-Javadoc)
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         * @see com.iver.cit.gvsig.fmap.layers.StatusRasterInterface#applyStatus(com.iver.cit.gvsig.fmap.layers.RasterFileAdapter)
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         */
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        public void applyStatus(RasterOperations layer){
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                //Eliminamos el fichero inicial y cargamos las bandas si hay para que se carguen 
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                //en el orden correcto
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                if(layer instanceof FLyrRaster){
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                        if(files.size()!=0){
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                                ((FLyrRaster)layer).delFile((String)files.get(0));
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                                for(int i=0;i<files.size();i++)
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                                        ((FLyrRaster)layer).addFiles((String)files.get(i));
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                        }
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                }
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                //Asigna las bandas
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                if(bandR==-1)bandR=0;
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                if(bandG==-1)bandG=0;
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                if(bandB==-1)bandB=0;
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                layer.setBand(GeoRasterFile.RED_BAND, bandR);
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                layer.setBand(GeoRasterFile.GREEN_BAND, bandG);
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                layer.setBand(GeoRasterFile.BLUE_BAND, bandB);
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                //Asigna la transparencia
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                if(transparency != 255)
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                        layer.setTransparency(transparency);
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                //Crea la pila de filtros a partir de las propiedades recuperadas desde el XML
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                if(layer.getFilterStack() != null){
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                        RasterFilterStackManager stackManager = new RasterFilterStackManager(layer.getFilterStack());
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                        if(layer instanceof FLyrRaster)
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                                stackManager.createStackFromStrings(this.filters, ((FLyrRaster)layer).getSource().getFiles());
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                        else
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                                stackManager.createStackFromStrings(this.filters, new Integer(0));
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                }
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        }
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}