| gvSIG desktop 1

/* gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana

 *

 * Copyright (C) 2005 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

 */

/* CVS MESSAGES:

*

* $Id: MultiLayerLineSymbol.java 10450 2007-02-21 16:09:35Z jaume $

* $Log$

* Revision 1.1.2.3  2007-02-21 16:09:02  jaume

* *** empty log message ***

*

* Revision 1.1.2.2  2007/02/21 07:34:09  jaume

* labeling starts working

*

* Revision 1.1.2.1  2007/02/16 10:54:12  jaume

* multilayer splitted to multilayerline, multilayermarker,and  multilayerfill

*

*

*/

package com.iver.cit.gvsig.fmap.core.symbols;

import java.awt.Color;

import java.awt.Graphics2D;

import java.awt.Rectangle;

import java.awt.Shape;

import java.awt.geom.AffineTransform;

import java.util.ArrayList;

import com.iver.cit.gvsig.fmap.DriverException;

import com.iver.cit.gvsig.fmap.core.FShape;

import com.iver.cit.gvsig.fmap.core.IGeometry;

import com.iver.cit.gvsig.fmap.core.SymbologyFactory;

import com.iver.cit.gvsig.fmap.core.styles.ILabelStyle;

import com.iver.cit.gvsig.fmap.core.styles.ILineStyle;

import com.iver.cit.gvsig.fmap.core.v02.FSymbol;

import com.iver.utiles.XMLEntity;

public class MultiLayerLineSymbol extends AbstractSymbol implements

                ILineSymbol, IMultiLayerSymbol {

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

        private ILineSymbol selectionSymbol;        

        public Color getColor() {

                /*

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

                 * of each layer is defined by the layer itself

                 */

                return null;

        }

        public ILineStyle getLineStyle() {

                /*

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

                 * of each layer is defined by the layer itself

                 */

                return null;

        }

        public double getWidth() {

                /*

                 * will return the widest symbol's width 

                 */

                double width = Double.MIN_VALUE;

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

                        width = Math.max(width, layers[i].getWidth());

                }

                return width;

        }

        public void setColor(Color color) {

                /*

                 * will apply the color to each layer

                 */

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

                        layers[i].setColor(color);

                }

        }

        public void setLineStyle(ILineStyle lineStyle) {

                /*

                 * will apply the same patter to each layer

                 */

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

                        layers[i].setLineStyle(lineStyle);

                }

        }

        public void setWidth(double width) {

                /* take the biggest width of the layer set and

                 * extract a factor scale that will be applied

                 * to each layer.

                 */

                double myWidth = getWidth();

                double scaleFactor = width / myWidth;

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

                        layers[i].setWidth(layers[i].getWidth()*scaleFactor);

                }

        }

        public void draw(Graphics2D g, AffineTransform affineTransform, FShape shp) {

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

                        layers[i].draw(g, affineTransform, shp);

                }

        }

        public void drawInsideRectangle(Graphics2D g, AffineTransform scaleInstance, Rectangle r) {

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

                        layers[i].drawInsideRectangle(g, scaleInstance, r);

                }

        }

        public int getOnePointRgb() {

                // will paint only the last layer pixel

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

        }

        public int getPixExtentPlus(Graphics2D g, AffineTransform affineTransform,

                        Shape shp) {

                // TODO Implement it

                throw new Error("Not yet implemented!");

        }

        public ISymbol getSymbolForSelection() {

                if (selectionSymbol == null) {

                        selectionSymbol = new SimpleLineSymbol();

                        selectionSymbol.setDescription(getDescription());

                        selectionSymbol.setWidth(getWidth());

                        selectionSymbol.setColor(FSymbol.getSelectionColor());

                }

                return selectionSymbol;

        }

        public int getSymbolType() {

                return FShape.LINE;

        }

        public XMLEntity getXMLEntity() {

                XMLEntity xml = new XMLEntity();

                xml.putProperty("className", getClass().getName());

                xml.putProperty("isShapeVisible", isShapeVisible());

                xml.putProperty("desc", getDescription());

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

                        xml.addChild(layers[i].getXMLEntity());

                }

                return xml;

        }

        public boolean isSuitableFor(IGeometry geom) {

                return geom.getGeometryType() == FShape.LINE;

        }

        public String getClassName() {

                return getClass().getName();

        }

        public void setXMLEntity(XMLEntity xml) {

                setIsShapeVisible(xml.getBooleanProperty("isShapeVisible"));

                setDescription(xml.getStringProperty("desc"));

                layers = new ILineSymbol[xml.getChildrenCount()];

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

                        layers[i] = (ILineSymbol) SymbologyFactory.createSymbolFromXML(xml.getChild(i), "layer" + i);

                }

        }

        public void print(Graphics2D g, AffineTransform at, FShape shape)

                        throws DriverException {

                // TODO Implement it

                throw new Error("Not yet implemented!");

        }

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

                layers[index] = (ILineSymbol) layer;

        }

        public void swapLayers(int index1, int index2) {

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

                layers[index2] = (ILineSymbol) aux1;

                layers[index1] = (ILineSymbol) aux2;

        }

        public ISymbol getLayer(int layerIndex) {

                try{

                        return layers[layerIndex];

                } catch (Exception e) {

                        return null;

                }

        }

        public int getLayerCount() {

                return layers.length;

        }

        public void addLayer(ISymbol newLayer) {

                if (newLayer == null) return;

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

                                                                 * next time it is required

                                                                 */

                int size = layers.length+1;

                ILineSymbol[] newLayers = new ILineSymbol[size];

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

                        newLayers[i] = layers[i];

                }

                newLayers[size-1] = (ILineSymbol) newLayer;

                layers = newLayers;

        }

        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);

                ArrayList newLayers = new ArrayList();

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

                        newLayers.add(layers[i]);

                }

                newLayers.add(layerIndex, newLayer);

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

        }

        public boolean removeLayer(ISymbol layer) {

                int capacity = 0;

                capacity = layers.length;

                ArrayList lst = new ArrayList(capacity);

                for (int i = 0; i < capacity; i++) {

                        lst.add(layers[i]);

                }

                boolean contains = lst.remove(layer);

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

                return contains;

        }

        public int getAlpha() {

                // will compute the acumulated opacity

                double myAlpha = 0;

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

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

                        myAlpha += (1-myAlpha)*layerAlpha;

                }

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

                return (result>255) ? 255 : result;

        }

        public void setAlpha(int outlineAlpha) {

                // first, get the biggest alpha in the layers and the index if such layer

                int maxAlpha = Integer.MIN_VALUE;

                int maxAlphaLayerIndex = 0;

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

                        if (layers[i].getAlpha() > maxAlpha) {

                                maxAlpha = layers[i].getAlpha();

                                maxAlphaLayerIndex = i;

                        }

                }

                // now, max alpha takes the value of the desired alpha and the rest

                // will take a scaled (to biggest alpha) alpha value

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

                        if (i!=maxAlphaLayerIndex) {

                                double scaledAlpha = (double) layers[i].getAlpha()/maxAlpha;

                                layers[i].setAlpha((int) (outlineAlpha*scaledAlpha));

                        } else {

                                layers[i].setAlpha(outlineAlpha);

                        }

                }

        }

}