Application: gvSIG desktop

/**

 * gvSIG. Desktop Geographic Information System.

 *

 * Copyright (C) 2007-2013 gvSIG Association.

 *

 * 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 3

 * 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.

 *

 * For any additional information, do not hesitate to contact us

 * at info AT gvsig.com, or visit our website www.gvsig.com.

 */

package org.gvsig.symbology.fmap.mapcontext.rendering.symbol.fill.impl;

import java.awt.Color;

import java.awt.Graphics2D;

import java.awt.Rectangle;

import java.awt.geom.AffineTransform;

import java.util.ArrayList;

import java.util.Arrays;

import java.util.List;

import org.gvsig.fmap.dal.feature.Feature;

import org.gvsig.fmap.geom.Geometry;

import org.gvsig.fmap.geom.type.GeometryType;

import org.gvsig.fmap.mapcontext.MapContextLocator;

import org.gvsig.fmap.mapcontext.ViewPort;

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

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

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

import org.gvsig.fmap.mapcontext.rendering.symbols.ISymbol_v2;

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

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

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

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;

import org.gvsig.tools.task.Cancellable;

import org.gvsig.tools.util.Callable;

import org.slf4j.Logger;

import org.slf4j.LoggerFactory;

/**

 * MultiLayerFillSymbol is a symbol which allows to group several kind of fill symbols

 * (xxxFillSymbol implementing IFillSymbol)in one and treats it like single symbol.

 * @author 2009-     <a href="cordinyana@gvsig.org">C?sar Ordi?ana</a> - gvSIG team

 */

public class MultiLayerFillSymbol extends AbstractFillSymbol implements IFillSymbol, IMultiLayerSymbol, IMultiLayerFillSymbol{

        private static final Logger LOG = LoggerFactory.getLogger(MultiLayerFillSymbol.class);

    public static final String MULTILAYER_FILL_SYMBOL_PERSISTENCE_DEFINITION_NAME = "MultiLayerFillSymbol";

    private static final String FIELD_LAYERS = "layers";

        private static final double OPACITY_SELECTION_FACTOR = .8;

        private IFillSymbol[] layers = new IFillSymbol[0];

        private MultiLayerFillSymbol selectionSymbol;

    private double[] sizes;

        @Override

        public Color getFillColor() {

                /*

                 * a multilayer symbol does not define any color, the color

                 * of each layer is defined by the layer itself

                 */

                return null;

        }

//        @Override

//        public int getOnePointRgb() {

//                // will paint only the last layer pixel

//                return layers[layers.length-1].getOnePointRgb();

//        }

        @Override

        public ILineSymbol getOutline() {

                /*

                 * a multilayer symbol does not define any outline, the outline

                 * of each layer is defined by the layer it self

                 */

                return null;

        }

    @Override

        public boolean isSuitableFor(Geometry geom) {

        GeometryType gt = geom.getGeometryType();

        return gt.isTypeOf(Geometry.TYPES.SURFACE);

        }

    @Override

        public void setFillColor(Color color) {

                /*

                 * Will apply the color to each layer

                 */

                for (int i = 0; layers != null && i < layers.length; i++) {

                        layers[i].setFillColor(color);

                }

        }

        @Override

        public void setOutline(ILineSymbol outline) {

                if (layers != null && layers.length > 0) {

                        for (int i = 0; i < layers.length - 1; i++) {

                                layers[i].setOutline(null);

                        }

                        layers[layers.length - 1].setOutline(outline);

                }

        }

    @Override

    public void draw(Graphics2D g, AffineTransform affineTransform, Geometry geom, Feature f, Cancellable cancel, Rectangle r) {

        for (int i = 0; (cancel == null || !cancel.isCanceled())

                && layers != null && i < layers.length; i++) {

            ISymbol layer = layers[i];

            if (layer == null) {

                continue;

            }

            if(layer instanceof CartographicSupport){

                ((CartographicSupport)layer).setCartographicContext(this.getCartographicContext());

            }

            if(layer instanceof ISymbol_v2){

                ((ISymbol_v2)layer).draw(g, affineTransform, geom, f, cancel, r);

            } else {

                layer.draw(g, affineTransform, geom, f, cancel);

            }

        }

    }

//        public void getPixExtentPlus(Geometry geom, float[] distances,

//                        ViewPort viewPort, int dpi) {

//                float[] myDistances = new float[] {0,0};

//                distances[0] = 0;

//                distances[1] = 0;

//                for (int i = 0; layers != null && i < layers.length; i++) {

//                        layers[i].getPixExtentPlus(geom, myDistances, viewPort, dpi);

//                        distances[0] = Math.max(myDistances[0], distances[0]);

//                        distances[1] = Math.max(myDistances[1], distances[1]);

//                }

//        }

        @Override

        public ISymbol getSymbolForSelection() {

        if (selectionSymbol == null) {

                            MultiLayerFillSymbol selectionSymbol =

                                new MultiLayerFillSymbol();

                        selectionSymbol.setDescription(getDescription());

                        for (int i = 0; layers != null && i < layers.length; i++) {

                                selectionSymbol.addLayer(layers[i].getSymbolForSelection());

                        }

                        setSymbolForSelection(selectionSymbol);

                } else {

          for (int i = 0; i < selectionSymbol.getLayerCount(); i++) {

                selectionSymbol.setLayer(i, selectionSymbol.getLayer(i).getSymbolForSelection());

            }

        }

        if (selectionSymbol instanceof CartographicSupport) {

            ((CartographicSupport) selectionSymbol).setUnit(this.getUnit());

        }

                return selectionSymbol;

        }

        @Override

        public int getSymbolType() {

                return Geometry.TYPES.SURFACE;

        }

        @Override

        public void setLayer(int index, ISymbol layer) throws IndexOutOfBoundsException {

                layers[index] = (IFillSymbol) layer;

        }

        @Override

        public void swapLayers(int index1, int index2) {

                ISymbol aux1 = getLayer(index1), aux2 = getLayer(index2);

                layers[index2] = (IFillSymbol) aux1;

                layers[index1] = (IFillSymbol) aux2;

        }

        @Override

        public ISymbol getLayer(int layerIndex) {

            return layers[layerIndex];

        }

        @Override

        public int getLayerCount() {

                return layers.length;

        }

        @Override

        public void addLayer(ISymbol newLayer) {

                addLayer(newLayer, layers.length);

        }

        @Override

        public void addLayer(ISymbol newLayer, int layerIndex) throws IndexOutOfBoundsException {

                if (newLayer == null ) {

                        /*|| newLayer instanceof ILabelStyle)*/ return; // null or symbols that are styles are not allowed

                }

                selectionSymbol = null; /* forces the selection symbol to be re-created

                                                                  * next time it is required

                                                                  */

                if (layerIndex < 0 || layers.length < layerIndex) {

                        throw new IndexOutOfBoundsException(layerIndex+" < 0 or "+layerIndex+" > "+layers.length);

                }

                List<ISymbol> newLayers = new ArrayList<>();

                newLayers.addAll(Arrays.asList(layers));

                try {

                        newLayers.add(layerIndex, newLayer);

                        layers = (IFillSymbol[]) newLayers.toArray(new IFillSymbol[0]);

                } catch (ArrayStoreException asEx) {

                        throw new ClassCastException(newLayer.getClass().getName() + " is not an IFillSymbol");

                }

        }

        @Override

        public boolean removeLayer(ISymbol layer) {

                int capacity = layers.length;

                List<IFillSymbol> lst = new ArrayList<IFillSymbol>(capacity);

                for (int i = 0; layers != null && i < capacity; i++) {

                        lst.add(layers[i]);

                }

                boolean contains = lst.remove(layer);

                layers = (IFillSymbol[])lst.toArray(new IFillSymbol[0]);

                return contains;

        }

        @Override

        public void setUnit(int unitIndex) {

                super.setUnit(unitIndex);

                for (int i = 0; layers != null && i < layers.length; i++) {

                        layers[i].setUnit(unitIndex);

                }

        }

        @Override

        public void setReferenceSystem(int system) {

                super.setReferenceSystem(system);

                for (int i = 0; layers != null && i < layers.length; i++) {

                        layers[i].setReferenceSystem(system);

                }

        }

        /**

         *Returns the transparency of the multi layer fill symbol created

         */

        @Override

        public int getFillAlpha() {

                // will compute the acumulated opacity

                double myAlpha = 0;

                for (int i = 0; layers != null && i < layers.length; i++) {

                        double layerAlpha = layers[i].getFillAlpha()/255D;

                        myAlpha += (1-myAlpha)*layerAlpha;

                }

                int result = (int) Math.round(myAlpha * 255);

                return (result>255) ? 255 : result;

        }

        public Object clone() throws CloneNotSupportedException {

                MultiLayerFillSymbol copy = (MultiLayerFillSymbol) super.clone();

                // Clone layers

                if (layers != null) {

                        IFillSymbol[] layersCopy = new IFillSymbol[layers.length];

                        for (int i = 0; i < layers.length; i++) {

                                layersCopy[i] = (IFillSymbol) layers[i].clone();

                        }

                        copy.layers = layersCopy;

                }

                // Clone selection

                if (selectionSymbol != null) {

                        copy.selectionSymbol = (MultiLayerFillSymbol) selectionSymbol

                                        .clone();

                }

                return copy;

        }

        private void setSymbolForSelection(MultiLayerFillSymbol symbolForSelection) {

                this.selectionSymbol = symbolForSelection;

        }

        @SuppressWarnings("unchecked")

        @Override

        public void loadFromState(PersistentState state)

                        throws PersistenceException {

                // Set parent fill symbol properties

                super.loadFromState(state);

                LOG.warn("FIXME, fix implement of loadFromState");

                // Set own properties

                // setSymbolForSelection((MultiLayerFillSymbol)

                // state.get(FIELD_SYMBOL_FOR_SELECTION));

                List theLayers = state.getList(FIELD_LAYERS);

                if (theLayers != null) {

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

                                addLayer((ISymbol) theLayers.get(i));

                        }

                }

        }

        @Override

        public void saveToState(PersistentState state) throws PersistenceException {

                // Save parent fill symbol properties

                super.saveToState(state);

                LOG.warn("FIXME, fix implement of saveToState");

                // Save own properties

                // Don't use the getSymbolForSelection method, as it will create it

                // if it does not exist, and persistence will enter an infinite loop

                // state.set(FIELD_SYMBOL_FOR_SELECTION, selectionSymbol);

                state.set(FIELD_LAYERS, layers);

        }

        public static class RegisterPersistence implements Callable {

                @Override

                public Object call() throws Exception {

                        PersistenceManager manager = ToolsLocator.getPersistenceManager();

                        if( manager.getDefinition(MULTILAYER_FILL_SYMBOL_PERSISTENCE_DEFINITION_NAME)==null ) {

                                DynStruct definition = manager.addDefinition(

                                                MultiLayerFillSymbol.class,

                                                MULTILAYER_FILL_SYMBOL_PERSISTENCE_DEFINITION_NAME,

                                                MULTILAYER_FILL_SYMBOL_PERSISTENCE_DEFINITION_NAME+" Persistence definition",

                                                null,

                                                null

                                );

                                // Extend the FillSymbol base definition

                                definition.extend(manager.getDefinition(FILL_SYMBOL_PERSISTENCE_DEFINITION_NAME));

                                // Selection Symbol

                                // definition.addDynFieldSingle(FIELD_SYMBOL_FOR_SELECTION).setType(

                                // DataTypes.OBJECT);

                                // Layers

                                definition.addDynFieldList(FIELD_LAYERS).setClassOfItems(IFillSymbol.class);

                        }

                        return Boolean.TRUE;

                }

        }

        public static class RegisterSymbol implements Callable {

                @Override

                public Object call() throws Exception {

                        int[] shapeTypes;

                        SymbolManager manager = MapContextLocator.getSymbolManager();

                        shapeTypes = new int[] { Geometry.TYPES.SURFACE,

                                        Geometry.TYPES.MULTISURFACE };

                        manager.registerMultiLayerSymbol(IFillSymbol.SYMBOL_NAME,

                                        shapeTypes, MultiLayerFillSymbol.class);

                        return Boolean.TRUE;

                }

        }

}