Application: gvSIG desktop » gvSIG raster

/* gvSIG. Geographic Information System of the Valencian Government

*

* Copyright (C) 2007-2008 Infrastructures and Transports Department

* of the Valencian Government (CIT)

* 

* 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., 51 Franklin Street, Fifth Floor, Boston, 

* MA  02110-1301, USA.

* 

*/

package org.gvsig.raster.fmap.legend;

import java.awt.Color;

import java.util.Arrays;

import java.util.List;

import org.gvsig.fmap.dal.coverage.RasterLocator;

import org.gvsig.fmap.dal.coverage.datastruct.ColorItem;

import org.gvsig.fmap.dal.coverage.store.props.ColorTable;

import org.gvsig.fmap.dal.coverage.util.MathUtils;

import org.gvsig.fmap.mapcontext.rendering.legend.IClassifiedLegend;

import org.gvsig.fmap.mapcontext.rendering.legend.ILegend;

import org.gvsig.fmap.mapcontext.rendering.legend.events.LegendContentsChangedListener;

import org.gvsig.fmap.mapcontext.rendering.legend.events.SymbolLegendEvent;

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

import org.gvsig.symbology.SymbologyLocator;

import org.gvsig.symbology.fmap.mapcontext.rendering.symbol.fill.IFillSymbol;

import org.gvsig.symbology.fmap.mapcontext.rendering.symbol.line.ILineSymbol;

import org.gvsig.tools.ToolsLocator;

import org.gvsig.tools.dynobject.DynStruct;

import org.gvsig.tools.persistence.PersistenceManager;

import org.gvsig.tools.persistence.PersistentState;

import org.gvsig.tools.persistence.exception.PersistenceException;

/**

 * Leyenda para tablas de color aplicadas a un raster.

 *

 * @version 27/06/2007

 * @author Nacho Brodin (nachobrodin@gmail.com)

 */

public class ColorTableLegend implements IClassifiedLegend, ILegend {

        public static final String  COLOR_TABLE_LEGEND_DYNCLASS_NAME = "ColorTableLegend";

        private static final String FIELD_SYMBOLS                    = "symbols";

        private static final String FIELD_DESCRIPTIONS               = "descriptions";

        private ISymbol[]           symbols                          = null;

        private String[]            desc                             = null;

        /**

         * Crea una leyenda de tipo ColorTableLegend a partir de un objeto ColorTable

         * @param colorTable

         * @return ColorTableLegend

         */

        public static ColorTableLegend createLegend(ColorTable colorTable) {

                if ((colorTable == null) || (colorTable.getColorItems() == null))

                        return null;

                MathUtils math = RasterLocator.getManager().getMathUtils();

                ILineSymbol line = SymbologyLocator.getSymbologyManager().createSimpleLineSymbol();

                line.setLineColor(Color.BLACK);

                ISymbol[] symbol = new ISymbol[colorTable.getColorItems().size()];

                String[] desc = new String[colorTable.getColorItems().size()];

                String nameClass = null;

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

                        IFillSymbol s = SymbologyLocator.getSymbologyManager().createSimpleFillSymbol();

                        s.setOutline(line);

                        s.setFillColor(((ColorItem) colorTable.getColorItems().get(i)).getColor());

                        nameClass = ((ColorItem) colorTable.getColorItems().get(i)).getNameClass();

                        if ((nameClass == null) || (nameClass.equals(""))){

                                if (i < (colorTable.getColorItems().size() - 1)){

                                        desc[i] = "[" + math.format(((ColorItem) colorTable.getColorItems().get(i)).getValue(), 2) + " , " + math.format(((ColorItem) colorTable.getColorItems().get(i + 1)).getValue(), 2) + "[ ";

                                }else{

                                        desc[i] = "[" + math.format(((ColorItem) colorTable.getColorItems().get(i)).getValue(), 2) + "] ";

                                }

                        }else{

                                desc[i] = ((ColorItem) colorTable.getColorItems().get(i)).getNameClass();

                        }        

                        symbol[i] = s;

                }

                return new ColorTableLegend(symbol, desc);

        }

        /**

         * Leyenda para tablas de color raster.

         * @param s Lista de simbolos

         * @param d Lista de descripciones de simbolos

         */

        public ColorTableLegend(ISymbol[] s, String[] d) {

                symbols = s;

                desc = d;

        }

        /**

         * Empty constructor used only for persistence purposes.

         */

        public ColorTableLegend() {

        }

        /*

         * (non-Javadoc)

         * @see com.iver.cit.gvsig.fmap.rendering.IClassifiedLegend#getDescriptions()

         */

        public String[] getDescriptions() {

                return desc;

        }

        /*

         * (non-Javadoc)

         * @see com.iver.cit.gvsig.fmap.rendering.IClassifiedLegend#getSymbols()

         */

        public ISymbol[] getSymbols() {

                return symbols;

        }

        /*

         * (non-Javadoc)

         * @see com.iver.cit.gvsig.fmap.rendering.IClassifiedLegend#getValues()

         */

        public Object[] getValues() {

                return desc;

        }

        /*

         * (non-Javadoc)

         * @see com.iver.cit.gvsig.fmap.rendering.ILegend#cloneLegend()

         */

        public ILegend cloneLegend() {

                return null;

        }

        /*

         * (non-Javadoc)

         * @see com.iver.cit.gvsig.fmap.rendering.ILegend#getDefaultSymbol()

         */

        public ISymbol getDefaultSymbol() {

                return null;

        }

        /*

         * (non-Javadoc)

         * @see com.iver.cit.gvsig.fmap.rendering.ILegend#getSLDString(java.lang.String)

         */

        public String getSLDString(String layerName) {

                return null;

        }

        /*

         * (non-Javadoc)

         * @see com.iver.utiles.IPersistance#getClassName()

         */

        public String getClassName() {

                return null;

        }

        public void addLegendListener(LegendContentsChangedListener listener) {

                // TODO Auto-generated method stub

        }

        public void fireDefaultSymbolChangedEvent(SymbolLegendEvent event) {

                // TODO Auto-generated method stub

        }

        public LegendContentsChangedListener[] getListeners() {

                // TODO Auto-generated method stub

                return null;

        }

        public void removeLegendListener(LegendContentsChangedListener listener) {

                // TODO Auto-generated method stub

        }

        @Override

        public Object clone() throws CloneNotSupportedException {

                // TODO Auto-generated method stub

                return super.clone();

        }

        private void setDescriptions(String[] descriptions) {

                this.desc = descriptions;

        }

        private void setSymbols(ISymbol[] symbols) {

                this.symbols = symbols;

        }

        @SuppressWarnings("unchecked")

        public void loadFromState(PersistentState state)

                        throws PersistenceException {

                List<ISymbol> symbols = (List<ISymbol>) state.get(FIELD_SYMBOLS);

                setSymbols(symbols.toArray(new ISymbol[symbols.size()]));

                List<String> descriptions =

                                (List<String>) state.get(FIELD_DESCRIPTIONS);

                setDescriptions(descriptions.toArray(new String[descriptions.size()]));

        }

        public void saveToState(PersistentState state) throws PersistenceException {

                state.set(FIELD_SYMBOLS, Arrays.asList(getSymbols()));

                state.set(FIELD_DESCRIPTIONS, Arrays.asList(getDescriptions()));

        }

        public static void registerPersistence() {

                PersistenceManager manager = ToolsLocator.getPersistenceManager();

                DynStruct definition = manager.addDefinition(

                                ColorTableLegend.class,

                                COLOR_TABLE_LEGEND_DYNCLASS_NAME,

                                COLOR_TABLE_LEGEND_DYNCLASS_NAME + " Persistence definition",

                                null, 

                                null

                );

                // Symbols

                definition.addDynFieldList(FIELD_SYMBOLS).setClassOfItems(ISymbol.class).setMandatory(true);

                // Descriptions

                definition.addDynFieldList(FIELD_DESCRIPTIONS).setClassOfItems(String.class).setMandatory(true);

        }

}