| gvSIG desktop 1

/*

 * Created on 10-abr-2006

 *

 * 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

 */

/* CVS MESSAGES:

*

* $Id: 

* $Log: 

*/

package com.iver.cit.gvsig.cad;

import java.awt.Graphics;

import java.awt.Graphics2D;

import java.awt.event.InputEvent;

import java.awt.event.MouseEvent;

import java.awt.geom.Point2D;

import java.util.ArrayList;

import java.util.Collections;

import java.util.List;

import org.apache.log4j.Logger;

import org.gvsig.fmap.core.NewFConverter;

import org.gvsig.jts.JtsUtil;

import statemap.State;

import com.hardcode.gdbms.driver.exceptions.ReadDriverException;

import com.iver.andami.PluginServices;

import com.iver.cit.gvsig.cad.sm.SplitGeometryCADToolContext;

import com.iver.cit.gvsig.exceptions.expansionfile.ExpansionFileReadException;

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

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

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

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

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

import com.iver.cit.gvsig.fmap.edition.DefaultRowEdited;

import com.iver.cit.gvsig.fmap.edition.EditionEvent;

import com.iver.cit.gvsig.fmap.edition.IRowEdited;

import com.iver.cit.gvsig.fmap.edition.VectorialEditableAdapter;

import com.iver.cit.gvsig.gui.cad.DefaultCADTool;

import com.iver.cit.gvsig.gui.cad.exception.CommandException;

import com.iver.cit.gvsig.layers.VectorialLayerEdited;

import com.vividsolutions.jts.geom.Coordinate;

import com.vividsolutions.jts.geom.Geometry;

import com.vividsolutions.jts.geom.GeometryCollection;

import com.vividsolutions.jts.geom.LineString;

/**

 * CAD Tool which splits the selected geometries of a vectorial editing

 * layer with a digitized polyline.

 * 

 * 

 * @author Alvaro Zabala

 *

 */

public class SplitGeometryCADTool extends DefaultCADTool {

        private static Logger logger = Logger.getLogger(SplitGeometryCADTool.class.getName());

        /**

         * String representation of this tool (used for example to active the tool

         * in mapcontrol)

         */

        public static final String SPLIT_GEOMETRY_TOOL_NAME = "_split_geometry";

        /**

         * finite state machine for this CAD tool

         */

        protected SplitGeometryCADToolContext _fsm;

        /**

         * Flag to mark if the digitized line has been finished.

         */

        protected boolean digitizingFinished = false;

        /**

         * Collection of digitized geometries

         */

        protected List<Point2D> clickedPoints;

        /**

         * Default Constructor

         */

        public SplitGeometryCADTool(){

        }

        /**

         * Initialization method.

         */

        public void init() {

                digitizingFinished = false;

                _fsm = new SplitGeometryCADToolContext(this);

                setNextTool(SplitGeometryCADTool.SPLIT_GEOMETRY_TOOL_NAME);

        }

        public boolean isDigitizingFinished() {

                return digitizingFinished;

        }

        public String toString() {

                return SplitGeometryCADTool.SPLIT_GEOMETRY_TOOL_NAME;

        }

        public void finishDigitizedLine(){

        }

        public ArrayList getSelectedRows(){

                return (ArrayList) CADUtil.getSelectedFeatures(getVLE());

        }

        public void splitSelectedGeometryWithDigitizedLine(){

                Point2D[] clickedPts = new Point2D[this.clickedPoints.size()];

                clickedPoints.toArray(clickedPts);

                Coordinate[] digitizedCoords = JtsUtil.getPoint2DAsCoordinates(clickedPts);

                LineString splittingLs = JtsUtil.GEOMETRY_FACTORY.createLineString(digitizedCoords);

                ArrayList selectedRows = getSelectedRows();

//                ArrayList<IRowEdited> splitSelectionGeoms = new

//                        ArrayList<IRowEdited>();

                IRowEdited editedRow = null;

                VectorialLayerEdited vle = getVLE();

                VectorialEditableAdapter vea = vle.getVEA();

                getCadToolAdapter().getMapControl().getMapContext().beginAtomicEvent();

                vea.startComplexRow();

                List<Integer> indices = new ArrayList<Integer>();

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

                        editedRow = (IRowEdited) selectedRows.get(i);

                        IFeature feat = (IFeature) editedRow.getLinkedRow().cloneRow();

                        IGeometry ig = feat.getGeometry();

                        Geometry jtsGeo = NewFConverter.toJtsGeometry(ig);

                        try {

                        Geometry splitGeo = JtsUtil.split(jtsGeo, splittingLs);

                        if(splitGeo instanceof GeometryCollection

                                        && ((GeometryCollection)splitGeo).getNumGeometries()>1){

                                //Saving originals polygons index

                                indices.add(new Integer(editedRow.getIndex()));

                                //and then, we add new features for each split geometry

                                GeometryCollection gc = (GeometryCollection)splitGeo;

                                for(int j = 0; j < gc.getNumGeometries(); j++){

                                        Geometry g = gc.getGeometryN(j);

                                        IGeometry fmapGeo = NewFConverter.toFMap(g);

                                        String newFID = vea.getNewFID();

                                        DefaultFeature df = new DefaultFeature(fmapGeo, feat.getAttributes(), newFID);

                                        int newIdx = CADUtil.addFeature(vle, df, getName());

//                                        DefaultRowEdited newRowEdited = new DefaultRowEdited(df,

//                                                                IRowEdited.STATUS_ADDED, 

//                                                                        newIdx);

//                                        splitSelectionGeoms.add(newRowEdited);

                                }//for j

                        }//if splitGeo

                        } catch (Exception ex) {

                                PluginServices.getLogger().error("Error splitting geom "+editedRow.getIndex(), ex);

                        }

                }

                // Vector index ordered highest to lowest

                Collections.sort(indices, Collections.reverseOrder());

                // Clear polygon erasing their lines in the table

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

                        try {

                                vea.removeRow(((Integer)indices.get(i)).intValue(), 

                                                PluginServices.getText(this,"deleted_feature"),

                                                EditionEvent.GRAPHIC);

                        } catch (ExpansionFileReadException e) {

                                logger.error("Error ExpansionFileReadException en la funcion split");

                        } catch (ReadDriverException e) {

                                logger.error("Error ReadDriverException en la funcion split");

                        }

                }

                vea.endComplexRow(getName());

                try {

                        vle.clearSelection(false);

                } catch (ReadDriverException e) {

                        PluginServices.getLogger().error("Error clearing selection", e);

                }

                getCadToolAdapter().getMapControl().getMapContext().endAtomicEvent();

        }

        public void end(){

                getCadToolAdapter().refreshEditedLayer();

                init();

        }

        public void addOption(String s) {

                State actualState = _fsm.getPreviousState();

                String status = actualState.getName();

                if (s.equals(PluginServices.getText(this, "cancel"))) {

                        init();

                        return;

                }

                if (status.equals("TopologicalEdition.FirstPoint")) {

                        return;

                }

                init();

        }

        public void addPoint(double x, double y, InputEvent event) {

                State actualState = _fsm.getPreviousState();

                String status = actualState.getName();

                if (status.equals("SplitGeometry.FirstPoint")) {

                        clickedPoints = new ArrayList<Point2D>();

                        clickedPoints.add(new Point2D.Double(x,y));

                } else if (status.equals("SplitGeometry.DigitizingLine")) {

                        clickedPoints.add(new Point2D.Double(x,y));

                        if (event != null && ((MouseEvent) event).getClickCount() == 2) {

                                digitizingFinished = true;

                                finishDigitizedLine();

                                splitSelectedGeometryWithDigitizedLine();

                                end();

                        }

                }

        }

        public void addValue(double d) {

        }

        /**

         * Draws a polyline with the clicked digitized points in the specified graphics.

         * 

         * @param g2 graphics on to draw the polyline

         * @param x last x mouse pointer position

         * @param y last y mouse pointer position

         */

        protected void drawPolyLine(Graphics2D g, double x, double y) {

                GeneralPathX gpx = 

                        new GeneralPathX(GeneralPathX.WIND_EVEN_ODD, 

                                                                        clickedPoints.size());

                Point2D firstPoint = clickedPoints.get(0);

                gpx.moveTo(firstPoint.getX(), firstPoint.getY());

                for (int i = 1; i < clickedPoints.size(); i++) {

                        Point2D clickedPoint = clickedPoints.get(i);

                        gpx.lineTo(clickedPoint.getX(), clickedPoint.getY());

                }

                gpx.lineTo(x, y);

                ShapeFactory.createPolyline2D(gpx).draw((Graphics2D) g,

                                        getCadToolAdapter().getMapControl().getViewPort(),

                                        DefaultCADTool.geometrySelectSymbol);

        }

        public void drawOperation(Graphics g, double x, double y) {

                State actualState = _fsm.getState();

        String status = actualState.getName();

        if (status.equals("SplitGeometry.FirstPoint") ) {

                return;

        } else if ((status.equals("SplitGeometry.DigitizingLine"))) {

                drawPolyLine((Graphics2D) g, x, y);

         }

//        else{

//                        try {

//                                Image imgSel = getVLE().getSelectionImage();

//                                if (imgSel != null)

//                                        g.drawImage(imgSel, 0, 0, null);

//                        } catch (Exception e) {

//                                e.printStackTrace();

//                        }

//         }

        }

        public String getName() {

                return PluginServices.getText(this, SPLIT_GEOMETRY_TOOL_NAME);

        }

        public void transition(double x, double y, InputEvent event) {

                try {

                        _fsm.addPoint(x, y, event);

                } catch (Exception e) {

                        init();

                }

        }

        public void transition(double d) {

                _fsm.addValue(d);

        }

        public void transition(String s) throws CommandException {

                if (!super.changeCommand(s)) {

                        _fsm.addOption(s);

                }

        }

}