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svn-gvsig-desktop / trunk / libraries / libFMap / src / com / iver / cit / gvsig / fmap / MapControl.java @ 1223

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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;
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import java.awt.Dimension;
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import java.awt.Graphics;
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import java.awt.Graphics2D;
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import java.awt.event.ActionEvent;
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import java.awt.event.ActionListener;
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import java.awt.event.ComponentEvent;
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import java.awt.event.ComponentListener;
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import java.awt.event.MouseEvent;
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import java.awt.event.MouseListener;
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import java.awt.event.MouseMotionListener;
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import java.awt.event.MouseWheelEvent;
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import java.awt.event.MouseWheelListener;
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import java.awt.image.BufferedImage;
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import java.util.HashMap;
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import javax.swing.JComponent;
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import javax.swing.Timer;
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import org.apache.log4j.Logger;
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import org.cresques.cts.IProjection;
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import org.cresques.cts.ProjectionPool;
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import com.iver.cit.gvsig.fmap.layers.LayerEvent;
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import com.iver.cit.gvsig.fmap.operations.Cancellable;
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import com.iver.cit.gvsig.fmap.tools.BehaviorException;
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import com.iver.cit.gvsig.fmap.tools.CompoundBehavior;
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import com.iver.cit.gvsig.fmap.tools.Behavior.Behavior;
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import com.iver.utiles.exceptionHandling.ExceptionHandlingSupport;
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import com.iver.utiles.exceptionHandling.ExceptionListener;
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/**
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 * MapControl.
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 *
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 * @author Fernando Gonz?lez Cort?s
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 */
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public class MapControl extends JComponent implements ComponentListener {
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        /** Cuando la vista est? actualizada. */
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        public static final int ACTUALIZADO = 0;
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        /** Cuando la vista est? desactualizada. */
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        public static final int DESACTUALIZADO = 1;
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        private static Logger logger = Logger.getLogger(MapControl.class.getName());
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        private FMap mapContext = null;
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        private HashMap namesMapTools = new HashMap();
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        private Behavior currentMapTool = null;
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        private int status = DESACTUALIZADO;
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        private BufferedImage image = null;
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        private String currentTool;
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        private CancelDraw canceldraw;
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        private boolean isCancelled = true;
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        private Timer timer;
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        protected ViewPort vp;
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        private Drawer drawer;
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        private MapToolListener mapToolListener = new MapToolListener();
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        private MapContextListener mapContextListener = new MapContextListener();
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        private ExceptionHandlingSupport exceptionHandlingSupport = new ExceptionHandlingSupport();
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        /**
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         * Crea un nuevo NewMapControl.
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         */
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        public MapControl() {
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                setDoubleBuffered(false);
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                setOpaque(true);
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                status = DESACTUALIZADO;
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                //Clase usada para cancelar el dibujado
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                canceldraw = new CancelDraw();
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                //Modelo de datos y ventana del mismo
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                // TODO: Cuando creamos un mapControl, deber?amos asignar
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                // la projecci?n por defecto con la que vayamos a trabajar.
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                // 23030 es el c?digo EPSG del UTM30 elipsoide ED50
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                vp = new ViewPort(ProjectionPool.get("EPSG:23030"));
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                setMapContext(new FMap(vp));
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                //eventos
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                this.addComponentListener(this);
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                this.addMouseListener(mapToolListener);
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                this.addMouseMotionListener(mapToolListener);
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                this.addMouseWheelListener(mapToolListener);
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                //Timer para mostrar el redibujado mientras se dibuja
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                timer = new Timer(300,
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                                new ActionListener() {
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                                        public void actionPerformed(ActionEvent e) {
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                                                MapControl.this.repaint();
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                                        }
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                                });
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        }
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        /**
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         * Inserta el modelo.
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         *
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         * @param model FMap.
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         */
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        public void setMapContext(FMap model) {
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                if (mapContext != null) {
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                        mapContext.removeAtomicEventListener(mapContextListener);
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                }
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                mapContext = model;
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146
                if (mapContext.getViewPort() == null) {
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                        mapContext.setViewPort(vp);
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                } else {
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                        vp = mapContext.getViewPort();
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                        // vp.setImageSize(new Dimension(getWidth(), getHeight()));
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                        //System.err.println("Viewport en setMapContext:" + vp);
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                }
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                mapContext.addAtomicEventListener(mapContextListener);
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157
                status = DESACTUALIZADO;
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        }
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160
        /**
161
         * Devuelve la proyecci?n.
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         *
163
         * @return Proyecci?n.
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         */
165
        public IProjection getProjection() {
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                return getMapContext().getProjection();
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        }
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169
        /**
170
         * Inserta una proyecci?n.
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         *
172
         * @param proj Proyecci?n.
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         */
174
        public void setProjection(IProjection proj) {
175
                getMapContext().setProjection(proj);
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        }
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178
        /**
179
         * Devuelve el modelo.
180
         *
181
         * @return FMap.
182
         */
183
        public FMap getMapContext() {
184
                return mapContext;
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        }
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187
        /**
188
         * Registra una herramienta (tool).
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         *
190
         * @param name Nombre de la herramienta.
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         * @param tool Herramienta.
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         */
193
        public void addMapTool(String name, Behavior tool) {
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                namesMapTools.put(name, tool);
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                tool.setMapControl(this);
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        }
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        public void addMapTool(String name, Behavior[] tools){
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                CompoundBehavior tool = new CompoundBehavior(tools);
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                addMapTool(name, tool);
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        }
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203
        /**
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         * DOCUMENT ME!
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         *
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         * @param toolName DOCUMENT ME!
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         */
208
        public void setTool(String toolName) {
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                Behavior mapTool = (Behavior) namesMapTools.get(toolName);
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                currentMapTool = mapTool;
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                currentTool = toolName;
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                this.setCursor(mapTool.getCursor());
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        }
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        /**
216
         * Devuelve el nombre de la herramienta seleccionada.
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         *
218
         * @return nombre.
219
         */
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        public String getTool() {
221
                return currentTool;
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        }
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        /**
225
         * Cancela el dibujado. Se espera a que la cancelaci?n surta efecto
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         */
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        public void cancelDrawing() {
228
                if (drawer != null) {
229
                        if (!drawer.isAlive()) {
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                                return;
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                        }
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                }
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                canceldraw.setCancel(true);
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                while (!isCancelled) {
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                }
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                canceldraw.setCancel(false);
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                isCancelled = false;
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        }
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        /**
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         * @see javax.swing.JComponent#paintComponent(java.awt.Graphics)
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         */
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        protected void paintComponent(Graphics g) {
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                if (status == ACTUALIZADO) {
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                        logger.debug("Dibujando la imagen obtenida");
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                        /*
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                         * Si hay un behaviour y la imagen es distinta de null se delega el dibujado
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                         * en dicho behaviour
254
                         */
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                        if ((currentMapTool != null) && (image != null)) {
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                                currentMapTool.paintComponent(g);                           
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                                System.out.println("Pinto ACTUALIZADO");
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                        }
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                } else if (status == DESACTUALIZADO) {
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                        System.out.println("DESACTUALIZADO: Obteniendo la imagen de la cartograf?a");
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                        /* if (isOpaque())
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                        {
263
                            if (image==null)
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                            {
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                                g.setColor(vp.getBackColor());
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                                g.fillRect(0,0,getWidth(), getHeight());                        
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                            } 
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                            // else g.drawImage(image,0,0,null);
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                        } */
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                        //Se cancela el dibujado anterior
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                        cancelDrawing();
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                        //Se crea la imagen con el color de fonde deseado
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                        if (image == null)
276
                        {
277
                                image = new BufferedImage(this.getWidth(), this.getHeight(),
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                                                BufferedImage.TYPE_INT_ARGB);
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                                vp.setImageSize(new Dimension(getWidth(), getHeight()));
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                                Graphics gTemp = image.createGraphics();
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                                gTemp.setColor(vp.getBackColor());
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                                gTemp.fillRect(0,0,getWidth(), getHeight());
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                                gTemp.dispose();
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                                // g.drawImage(image,0,0,null);
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                                System.out.println("Imagen con null en DESACTUALIZADO");
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                        }
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                        g.drawImage(image,0,0,null);
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                        Graphics imgg = image.createGraphics();
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291
                        //Se lanza el tread de dibujado                        
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                        drawer = new Drawer(image, (Graphics2D) imgg, canceldraw);
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                        drawer.start();
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                        timer.start();
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                        status = ACTUALIZADO;
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297
                        // repaint();
298
                }
299
        }
300

    
301
        /**
302
         * Devuelve la imagen de la vista.
303
         *
304
         * @return imagen.
305
         */
306
        public BufferedImage getImage() {
307
                return image;
308
        }
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310
        /**
311
         * Marca el mapa para que en el pr?ximo redibujado se acceda a la
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         * cartograf?a para reobtener la imagen
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         * @param doClear TODO
314
         */
315
        public void drawMap(boolean doClear) {
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                status = DESACTUALIZADO;
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                if (doClear) image = null; // Se usa para el PAN
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                repaint();
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        }
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        /**
322
         * @see java.awt.event.ComponentListener#componentHidden(java.awt.event.ComponentEvent)
323
         */
324
        public void componentHidden(ComponentEvent e) {
325
        }
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327
        /**
328
         * @see java.awt.event.ComponentListener#componentMoved(java.awt.event.ComponentEvent)
329
         */
330
        public void componentMoved(ComponentEvent e) {
331
        }
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333
        /**
334
         * @see java.awt.event.ComponentListener#componentResized(java.awt.event.ComponentEvent)
335
         */
336
        public void componentResized(ComponentEvent e) {
337
                /* image = new BufferedImage(this.getWidth(), this.getHeight(),
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                                BufferedImage.TYPE_INT_ARGB);                
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                Graphics gTemp = image.createGraphics();
340
                gTemp.setColor(vp.getBackColor());
341
                gTemp.fillRect(0,0,getWidth(), getHeight()); */
342
            image = null;
343
            vp.setImageSize(new Dimension(getWidth(), getHeight()));
344
                getMapContext().getViewPort().setScale();
345
                drawMap(false);
346
        }
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348
        /**
349
         * @see java.awt.event.ComponentListener#componentShown(java.awt.event.ComponentEvent)
350
         */
351
        public void componentShown(ComponentEvent e) {
352
        }
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354
        /**
355
         * A?ade un listener de tipo ExceptionListener.
356
         *
357
         * @param o ExceptionListener.
358
         */
359
        public void addExceptionListener(ExceptionListener o) {
360
                exceptionHandlingSupport.addExceptionListener(o);
361
        }
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363
        /**
364
         * Borra la ExceptioListener que se pasa como par?metro.
365
         *
366
         * @param o ExceptionListener.
367
         *
368
         * @return True si se borra correctamente.
369
         */
370
        public boolean removeExceptionListener(ExceptionListener o) {
371
                return exceptionHandlingSupport.removeExceptionListener(o);
372
        }
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374
        /**
375
         * Lanza una Excepci?n.
376
         *
377
         * @param t Excepci?n.
378
         */
379
        private void throwException(Throwable t) {
380
                exceptionHandlingSupport.throwException(t);
381
        }
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383
        /**
384
         * Clase utilizada para dibujar las capas.
385
         *
386
         * @author Vicente Caballero Navarro
387
         */
388
        public class Drawer extends Thread {
389
                private Graphics g;
390
                private BufferedImage image;
391
                private CancelDraw cancel;
392
                private boolean threadCancel = false;
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394
                /**
395
                 * Crea un nuevo Drawer.
396
                 *
397
                 * @param image
398
                 * @param g
399
                 * @param cancel
400
                 */
401
                public Drawer(BufferedImage image, Graphics g, CancelDraw cancel) {
402
                        this.g = g;
403
                        this.image = image;
404
                        this.cancel = cancel;
405
                }
406

    
407
                /**
408
                 * @see java.lang.Runnable#run()
409
                 */
410
                public void run() {
411
                        try {
412
                                synchronized (Drawer.class) {
413
                                        mapContext.draw(image, (Graphics2D) image.getGraphics(),
414
                                                cancel);
415
                                        timer.stop();
416
                                        isCancelled = true;
417
                                        repaint();
418
                                }
419
                        } catch (Throwable e) {
420
                                throwException(e);
421
                        } finally {
422
                        }
423
                }
424
        }
425

    
426
        /**
427
         * Clase para cancelar el dibujado.
428
         *
429
         * @author Fernando Gonz?lez Cort?s
430
         */
431
        public class CancelDraw implements Cancellable {
432
                private boolean cancel = false;
433

    
434
                /**
435
                 * Crea un nuevo CancelDraw.
436
                 */
437
                public CancelDraw() {
438
                }
439

    
440
                /**
441
                 * Insertar si se debe cancelar el dibujado.
442
                 *
443
                 * @param b true si se debe cancelar el dibujado.
444
                 */
445
                public void setCancel(boolean b) {
446
                        cancel = b;
447
                }
448

    
449
                /**
450
                 * @see com.iver.cit.gvsig.fmap.operations.Cancellable#isCanceled()
451
                 */
452
                public boolean isCanceled() {
453
                        return cancel;
454
                }
455
        }
456

    
457
        /**
458
         * Listener del MapTool.
459
         *
460
         * @author Fernando Gonz?lez Cort?s
461
         */
462
        public class MapToolListener implements MouseListener, MouseWheelListener,
463
                MouseMotionListener {
464
                /**
465
                 * @see java.awt.event.MouseListener#mouseClicked(java.awt.event.MouseEvent)
466
                 */
467
                public void mouseClicked(MouseEvent e) {
468
                        try {
469
                                currentMapTool.mouseClicked(e);
470
                        } catch (BehaviorException t) {
471
                                throwException(t);
472
                        }
473
                }
474

    
475
                /**
476
                 * @see java.awt.event.MouseListener#mouseEntered(java.awt.event.MouseEvent)
477
                 */
478
                public void mouseEntered(MouseEvent e) {
479
                        try {
480
                                currentMapTool.mouseEntered(e);
481
                        } catch (BehaviorException t) {
482
                                throwException(t);
483
                        }
484
                }
485

    
486
                /**
487
                 * @see java.awt.event.MouseListener#mouseExited(java.awt.event.MouseEvent)
488
                 */
489
                public void mouseExited(MouseEvent e) {
490
                        try {
491
                                currentMapTool.mouseExited(e);
492
                        } catch (BehaviorException t) {
493
                                throwException(t);
494
                        }
495
                }
496

    
497
                /**
498
                 * @see java.awt.event.MouseListener#mousePressed(java.awt.event.MouseEvent)
499
                 */
500
                public void mousePressed(MouseEvent e) {
501
                        try {
502
                                currentMapTool.mousePressed(e);
503
                        } catch (BehaviorException t) {
504
                                throwException(t);
505
                        }
506
                }
507

    
508
                /**
509
                 * @see java.awt.event.MouseListener#mouseReleased(java.awt.event.MouseEvent)
510
                 */
511
                public void mouseReleased(MouseEvent e) {
512
                        try {
513
                                currentMapTool.mouseReleased(e);
514
                        } catch (BehaviorException t) {
515
                                throwException(t);
516
                        }
517
                }
518

    
519
                /**
520
                 * @see java.awt.event.MouseWheelListener#mouseWheelMoved(java.awt.event.MouseWheelEvent)
521
                 */
522
                public void mouseWheelMoved(MouseWheelEvent e) {
523
                        try {
524
                                currentMapTool.mouseWheelMoved(e);
525
                        } catch (BehaviorException t) {
526
                                throwException(t);
527
                        }
528
                }
529

    
530
                /**
531
                 * @see java.awt.event.MouseMotionListener#mouseDragged(java.awt.event.MouseEvent)
532
                 */
533
                public void mouseDragged(MouseEvent e) {
534
                        try {
535
                                currentMapTool.mouseDragged(e);
536
                        } catch (BehaviorException t) {
537
                                throwException(t);
538
                        }
539
                }
540

    
541
                /**
542
                 * @see java.awt.event.MouseMotionListener#mouseMoved(java.awt.event.MouseEvent)
543
                 */
544
                public void mouseMoved(MouseEvent e) {
545
                        try {
546
                                currentMapTool.mouseMoved(e);
547
                        } catch (BehaviorException t) {
548
                                throwException(t);
549
                        }
550
                }
551
        }
552

    
553
        /**
554
         * Listener sobre el MapContext.
555
         *
556
         * @author Fernando Gonz?lez Cort?s
557
         */
558
        public class MapContextListener implements AtomicEventListener {
559
                /**
560
                 * @see com.iver.cit.gvsig.fmap.AtomicEventListener#atomicEvent(com.iver.cit.gvsig.fmap.AtomicEvent)
561
                 */
562
                public void atomicEvent(AtomicEvent e) {
563
                        boolean redraw = false;
564
                        LayerEvent[] layerEvents = e.getLayerEvents();
565

    
566
                        for (int i = 0; i < layerEvents.length; i++) {
567
                                if (layerEvents[i].getProperty().equals("visible")) {
568
                                        redraw = true;
569
                                }
570
                        }
571

    
572
                        if (e.getColorEvents().length > 0) {
573
                                redraw = true;
574
                        }
575

    
576
                        if (e.getExtentEvents().length > 0) {
577
                                redraw = true;
578
                        }
579

    
580
                        if (e.getLayerCollectionEvents().length > 0) {
581
                                redraw = true;
582
                        }
583

    
584
                        if (e.getLegendEvents().length > 0) {
585
                                redraw = true;
586
                        }
587

    
588
                        if (e.getSelectionEvents().length > 0) {
589
                                redraw = true;
590
                        }
591

    
592
                        if (redraw) {
593
                                MapControl.this.drawMap(false);
594
                        }
595
                }
596
        }
597
        public ViewPort getViewPort() {
598
                return vp;
599
        }
600
}