Application: gvSIG desktop

/* 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

 */

package com.iver.cit.gvsig.fmap;

import java.awt.Color;

import java.awt.Dimension;

import java.awt.Graphics;

import java.awt.Graphics2D;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import java.awt.event.ComponentEvent;

import java.awt.event.ComponentListener;

import java.awt.event.MouseEvent;

import java.awt.event.MouseListener;

import java.awt.event.MouseMotionListener;

import java.awt.event.MouseWheelEvent;

import java.awt.event.MouseWheelListener;

import java.awt.image.BufferedImage;

import java.util.HashMap;

import javax.swing.JComponent;

import javax.swing.Timer;

import org.cresques.cts.IProjection;

import org.cresques.cts.ProjectionPool;

import com.iver.cit.gvsig.fmap.edition.commands.CommandListener;

import com.iver.cit.gvsig.fmap.layers.LayerEvent;

import com.iver.cit.gvsig.fmap.operations.Cancellable;

import com.iver.cit.gvsig.fmap.tools.BehaviorException;

import com.iver.cit.gvsig.fmap.tools.CompoundBehavior;

import com.iver.cit.gvsig.fmap.tools.Behavior.Behavior;

import com.iver.utiles.exceptionHandling.ExceptionHandlingSupport;

import com.iver.utiles.exceptionHandling.ExceptionListener;

/**

 * MapControl.

 *

 * @author Fernando Gonz?lez Cort?s

 */

public class MapControl extends JComponent implements ComponentListener,CommandListener {

        /** Cuando la vista est? actualizada. */

        public static final int ACTUALIZADO = 0;

        /** Cuando la vista est? desactualizada. */

        public static final int DESACTUALIZADO = 1;

    public static final int ONLY_GRAPHICS = 2;

    // public static final int FAST_PAINT = 3;

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

        private FMap mapContext = null;

    //private boolean drawerAlive = false;

        private HashMap namesMapTools = new HashMap();

        private Behavior currentMapTool = null;

        private int status = DESACTUALIZADO;

        private BufferedImage image = null;

        private String currentTool;

        private CancelDraw canceldraw;

        //private boolean isCancelled = true;

        private Timer timer;

        protected ViewPort vp;

        //private Drawer drawer;

    private Drawer2 drawer2;

    // private boolean firstDraw = true;

        private MapToolListener mapToolListener = new MapToolListener();

        private MapContextListener mapContextListener = new MapContextListener();

        private ExceptionHandlingSupport exceptionHandlingSupport = new ExceptionHandlingSupport();

        private String prevTool;

        /**

     * We need this to avoid not wanted refresh. REMEMBER TO SET TO TRUE!!

     */

    // private boolean paintEnabled = false;

        /**

         * Crea un nuevo NewMapControl.

         */

        public MapControl() {

                setDoubleBuffered(false);

                setOpaque(true);

                status = DESACTUALIZADO;

                //Clase usada para cancelar el dibujado

                canceldraw = new CancelDraw();

                //Modelo de datos y ventana del mismo

                // TODO: Cuando creamos un mapControl, deber?amos asignar

                // la projecci?n por defecto con la que vayamos a trabajar.

                // 23030 es el c?digo EPSG del UTM30 elipsoide ED50

                vp = new ViewPort(ProjectionPool.get("EPSG:23030"));

                setMapContext(new FMap(vp));

                //eventos

                this.addComponentListener(this);

                this.addMouseListener(mapToolListener);

                this.addMouseMotionListener(mapToolListener);

                this.addMouseWheelListener(mapToolListener);

        this.drawer2 = new Drawer2();

                //Timer para mostrar el redibujado mientras se dibuja

                timer = new Timer(300,

                                new ActionListener() {

                                        public void actionPerformed(ActionEvent e) {

                                                MapControl.this.repaint();

                                        }

                                });

        }

        /**

         * Inserta el modelo.

         *

         * @param model FMap.

         */

        public void setMapContext(FMap model) {

                if (mapContext != null) {

                        mapContext.removeAtomicEventListener(mapContextListener);

                }

                mapContext = model;

                if (mapContext.getViewPort() == null) {

                        mapContext.setViewPort(vp);

                } else {

                        vp = mapContext.getViewPort();

                        // vp.setImageSize(new Dimension(getWidth(), getHeight()));

                        //System.err.println("Viewport en setMapContext:" + vp);

                }

                mapContext.addAtomicEventListener(mapContextListener);

                status = DESACTUALIZADO;

        }

        /**

         * Devuelve la proyecci?n.

         *

         * @return Proyecci?n.

         */

        public IProjection getProjection() {

                return getMapContext().getProjection();

        }

        /**

         * Inserta una proyecci?n.

         *

         * @param proj Proyecci?n.

         */

        public void setProjection(IProjection proj) {

                getMapContext().setProjection(proj);

        }

        /**

         * Devuelve el modelo.

         *

         * @return FMap.

         */

        public FMap getMapContext() {

                return mapContext;

        }

        /**

         * Registra una herramienta (tool).

         *

         * @param name Nombre de la herramienta.

         * @param tool Herramienta.

         */

        public void addMapTool(String name, Behavior tool) {

                namesMapTools.put(name, tool);

                tool.setMapControl(this);

        }

        public void addMapTool(String name, Behavior[] tools){

                CompoundBehavior tool = new CompoundBehavior(tools);

                addMapTool(name, tool);

        }

        /**

         * DOCUMENT ME!

         *

         * @param toolName DOCUMENT ME!

         */

        public void setTool(String toolName) {

                prevTool=getTool();

                Behavior mapTool = (Behavior) namesMapTools.get(toolName);

                currentMapTool = mapTool;

                currentTool = toolName;

                this.setCursor(mapTool.getCursor());

        }

        public Behavior getCurrentMapTool(){

                return currentMapTool;

        }

        /**

         * Devuelve el nombre de la herramienta seleccionada.

         *

         * @return nombre.

         */

        public String getTool() {

                return currentTool;

        }

        /**

         * Cancela el dibujado. Se espera a que la cancelaci?n surta efecto

         */

        public void cancelDrawing() {

                /* if (drawer != null) {

                        if (!drawer.isAlive()) {

                                return;

                        }

                }

                */

                canceldraw.setCanceled(true);

                /* while (!isCancelled) {

                        if (!drawer.isAlive()) {

                            // Si hemos llegado aqu? con un thread vivo, seguramente

                            // no estamos actualizados.

                                break;

                        }

                }

                canceldraw.setCancel(false);

                isCancelled = false;

        drawerAlive = false; */

        }

    private boolean adaptToImageSize()

    {

        if ((image == null) || (vp.getImageWidth() != this.getWidth()) || (vp.getImageHeight() != this.getHeight()))

        {

            image = new BufferedImage(this.getWidth(), this.getHeight(),

                    BufferedImage.TYPE_INT_ARGB);

            vp.setImageSize(new Dimension(getWidth(), getHeight()));

            getMapContext().getViewPort().setScale();

            Graphics gTemp = image.createGraphics();

            Color theBackColor = vp.getBackColor();

            if (theBackColor == null)

                gTemp.setColor(Color.WHITE);

            else

                gTemp.setColor(theBackColor);

            gTemp.fillRect(0,0,getWidth(), getHeight());

            gTemp.dispose();

            status = DESACTUALIZADO;

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

            return true;

        }

        return false;

    }

        /**

         * @see javax.swing.JComponent#paintComponent(java.awt.Graphics)

         */

        protected void paintComponent(Graphics g) {

        adaptToImageSize();

        /* if (status == FAST_PAINT) {

            System.out.println("FAST_PAINT");

            g.drawImage(image,0,0,null);

            status = ACTUALIZADO;

            return;

        } */

        // System.out.println("PINTANDO MAPCONTROL" + this);

                if (status == ACTUALIZADO) {

                        // LWS logger.debug("Dibujando la imagen obtenida");

                        /*

                         * Si hay un behaviour y la imagen es distinta de null se delega el dibujado

                         * en dicho behaviour

                         */

            if (image != null)

            {

                if (currentMapTool != null)

                    currentMapTool.paintComponent(g);

                else

                    g.drawImage(image,0,0,null);

                                // System.out.println("Pinto ACTUALIZADO");

                        }

                } else if ((status == DESACTUALIZADO)

                || (status == ONLY_GRAPHICS)) {

                        // LWS System.out.println("DESACTUALIZADO: Obteniendo la imagen de la cartograf?a");

                        /* if (isOpaque())

                        {

                            if (image==null)

                            {

                                g.setColor(vp.getBackColor());

                                g.fillRect(0,0,getWidth(), getHeight());

                            }

                            // else g.drawImage(image,0,0,null);

                        } */

            // cancelDrawing();

                        //Se crea la imagen con el color de fonde deseado

                        /* if (image == null)

                        {

                                image = new BufferedImage(this.getWidth(), this.getHeight(),

                                                BufferedImage.TYPE_INT_ARGB);

                                vp.setImageSize(new Dimension(getWidth(), getHeight()));

                                Graphics gTemp = image.createGraphics();

                            Color theBackColor = vp.getBackColor();

                            if (theBackColor == null)

                                gTemp.setColor(Color.WHITE);

                            else

                                gTemp.setColor(theBackColor);

                                gTemp.fillRect(0,0,getWidth(), getHeight());

                                gTemp.dispose();

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

                                System.out.println("Imagen con null en DESACTUALIZADO. Width = " + this.getWidth());

                        } */

            // else

            // {

            // if (image != null)

            //  {

                g.drawImage(image,0,0,null);

                drawer2.put(new PaintingRequest());

                timer.start();

            /* }

            else

                return; */

            // }

            /* if (drawerAlive == false)

            {

                drawer = new Drawer(image, canceldraw);

                drawer.start();

                        //Se lanza el tread de dibujado

            } */

                        // status = ACTUALIZADO;

                }

        }

        /**

         * Devuelve la imagen de la vista.

         *

         * @return imagen.

         */

        public BufferedImage getImage() {

                return image;

        }

        /**

         * Marca el mapa para que en el pr?ximo redibujado se acceda a la

         * cartograf?a para reobtener la imagen

         * @param doClear Solo deber?a ser true cuando se llama desde pan

         */

        public void drawMap(boolean doClear) {

                cancelDrawing();

                System.out.println("drawMap con doClear=" + doClear);

        status = DESACTUALIZADO;

                if (doClear)

        {

            // image = null; // Se usa para el PAN

            if (image != null)

            {

                Graphics2D g = image.createGraphics();

                Color theBackColor = vp.getBackColor();

                if (theBackColor == null)

                    g.setColor(Color.WHITE);

                else

                    g.setColor(theBackColor);

                g.fillRect(0, 0, vp.getImageWidth(), vp.getImageHeight());

                g.dispose();

            }

        }

                repaint();

        }

    public void drawGraphics() {

        status = ONLY_GRAPHICS;

        repaint();

    }

        /**

         * @see java.awt.event.ComponentListener#componentHidden(java.awt.event.ComponentEvent)

         */

        public void componentHidden(ComponentEvent e) {

        }

        /**

         * @see java.awt.event.ComponentListener#componentMoved(java.awt.event.ComponentEvent)

         */

        public void componentMoved(ComponentEvent e) {

        }

        /**

         * @see java.awt.event.ComponentListener#componentResized(java.awt.event.ComponentEvent)

         */

        public void componentResized(ComponentEvent e) {

                /* image = new BufferedImage(this.getWidth(), this.getHeight(),

                                BufferedImage.TYPE_INT_ARGB);

                Graphics gTemp = image.createGraphics();

                gTemp.setColor(vp.getBackColor());

                gTemp.fillRect(0,0,getWidth(), getHeight());

        System.out.println("MapControl resized");

            // image = null;

            vp.setImageSize(new Dimension(getWidth(), getHeight()));

                getMapContext().getViewPort().setScale(); */

                // drawMap(true);

        }

        /**

         * @see java.awt.event.ComponentListener#componentShown(java.awt.event.ComponentEvent)

         */

        public void componentShown(ComponentEvent e) {

        }

        /**

         * A?ade un listener de tipo ExceptionListener.

         *

         * @param o ExceptionListener.

         */

        public void addExceptionListener(ExceptionListener o) {

                exceptionHandlingSupport.addExceptionListener(o);

        }

        /**

         * Borra la ExceptioListener que se pasa como par?metro.

         *

         * @param o ExceptionListener.

         *

         * @return True si se borra correctamente.

         */

        public boolean removeExceptionListener(ExceptionListener o) {

                return exceptionHandlingSupport.removeExceptionListener(o);

        }

        /**

         * Lanza una Excepci?n.

         *

         * @param t Excepci?n.

         */

        private void throwException(Throwable t) {

                exceptionHandlingSupport.throwException(t);

        }

    private class PaintingRequest

    {

        public PaintingRequest()

        {

        }

        public void paint()

        {

            try

            {

                    canceldraw.setCanceled(false);

                /* if (image == null)

                {

                    image = new BufferedImage(vp.getImageWidth(), vp.getImageHeight(),

                            BufferedImage.TYPE_INT_ARGB);

                    Graphics gTemp = image.createGraphics();

                    Color theBackColor = vp.getBackColor();

                    if (theBackColor == null)

                        gTemp.setColor(Color.WHITE);

                    else

                        gTemp.setColor(theBackColor);

                    gTemp.fillRect(0,0,getWidth(), getHeight());

                    gTemp.dispose();

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

                    System.out.println("Imagen con null en DESACTUALIZADO. Width = " + this.getWidth());

                } */

                Graphics2D g = image.createGraphics();

                ViewPort viewPort = mapContext.getViewPort();

                if (status == DESACTUALIZADO)

                {

                    Color theBackColor = viewPort.getBackColor();

                    if (theBackColor == null)

                        g.setColor(Color.WHITE);

                    else

                        g.setColor(theBackColor);

                    g.fillRect(0, 0, viewPort.getImageWidth(), viewPort.getImageHeight());

                    status = ACTUALIZADO;

                    mapContext.draw(image, g, canceldraw, mapContext.getScaleView());

                }

                else if (status == ONLY_GRAPHICS)

                {

                    status = ACTUALIZADO;

                    mapContext.drawGraphics(image, g, canceldraw,mapContext.getScaleView());

                }

                // status = FAST_PAINT;

              //  drawerAlive = false;

                timer.stop();

                repaint();

            } catch (Throwable e) {

                timer.stop();

              //  isCancelled = true;

                e.printStackTrace();

                throwException(e);

            } finally {

            }

        }

    }

    /**

     * @author fjp

     *

     * Basasdo en el patr?n WorkerThread

     *

     */

    public class Drawer2

    {

        // Una mini cola de 2. No acumulamos peticiones de dibujado

        // dibujamos solo lo ?ltimo que nos han pedido.

        private PaintingRequest paintingRequest;

        private PaintingRequest waitingRequest;

        private boolean waiting;

        private boolean shutdown;

        public void setShutdown(boolean isShutdown)

        {

            shutdown = isShutdown;

        }

        public Drawer2()

        {

            paintingRequest = null;

            waitingRequest = null;

            waiting = false;

            shutdown = false;

            new Thread(new Worker()).start();

        }

        public void put(PaintingRequest newPaintRequest)

        {

            waitingRequest = newPaintRequest;

            if (waiting)

            {

                synchronized (this) {

                    notifyAll();

                }

            }

        }

        public PaintingRequest take()

        {

            if (waitingRequest == null)

            {

                synchronized (this) {

                    waiting = true;

                    try {

                        wait();

                    }

                    catch (InterruptedException ie)

                    {

                        waiting = false;

                    }

                }

            }

            paintingRequest = waitingRequest;

            waitingRequest = null;

            return paintingRequest;

        }

        private class Worker implements Runnable

        {

            public void run()

            {

                while (!shutdown)

                {

                    PaintingRequest p = take();

                    System.out.println("Pintando");

                    if (image != null){

                            cancelDrawing();

                        p.paint();

                    } else

                        status = DESACTUALIZADO;

                }

            }

        }

    }

        /**

         * Clase utilizada para dibujar las capas.

         *

         * @author Vicente Caballero Navarro

         */

        public class Drawer extends Thread {

                //private Graphics g;

                private BufferedImage image = null;

                private CancelDraw cancel;

                //private boolean threadCancel = false;

                /**

                 * Crea un nuevo Drawer.

                 *

                 */

                public Drawer(BufferedImage image, CancelDraw cancel)

        {

                        this.image = image;

                        this.cancel = cancel;

         //   drawerAlive = true;

                }

                /**

                 * @see java.lang.Runnable#run()

                 */

                public void run() {

                        try {

                                // synchronized (Drawer.class) {

                                    Graphics2D g = image.createGraphics();

                                    ViewPort viewPort = mapContext.getViewPort();

                    if (status == DESACTUALIZADO)

                    {

                                        Color theBackColor = viewPort.getBackColor();

                                        if (theBackColor == null)

                                            g.setColor(Color.WHITE);

                                        else

                                            g.setColor(theBackColor);

                                            g.fillRect(0, 0, viewPort.getImageWidth(), viewPort.getImageHeight());

                        status = ACTUALIZADO;

                        mapContext.draw(image, g, cancel,mapContext.getScaleView());

                    }

                    else if (status == ONLY_GRAPHICS)

                    {

                        status = ACTUALIZADO;

                        mapContext.drawGraphics(image, g, cancel,mapContext.getScaleView());

                    }

                                        timer.stop();

                    // status = FAST_PAINT;

                  //  drawerAlive = false;

                                        repaint();

                                // }

                        } catch (Throwable e) {

                            timer.stop();

                                //isCancelled = true;

                e.printStackTrace();

                                throwException(e);

                        } finally {

                        }

                }

        }

        /**

         * Clase para cancelar el dibujado.

         *

         * @author Fernando Gonz?lez Cort?s

         */

        public class CancelDraw implements Cancellable {

                private boolean cancel = false;

                /**

                 * Crea un nuevo CancelDraw.

                 */

                public CancelDraw() {

                }

                /**

                 * Insertar si se debe cancelar el dibujado.

                 *

                 * @param b true si se debe cancelar el dibujado.

                 */

                public void setCanceled(boolean b) {

                        cancel = b;

                }

                /**

                 * @see com.iver.cit.gvsig.fmap.operations.Cancellable#isCanceled()

                 */

                public boolean isCanceled() {

                        return cancel;

                }

        }

        /**

         * Listener del MapTool.

         *

         * @author Fernando Gonz?lez Cort?s

         */

        public class MapToolListener implements MouseListener, MouseWheelListener,

                MouseMotionListener {

                /**

                 * @see java.awt.event.MouseListener#mouseClicked(java.awt.event.MouseEvent)

                 */

                public void mouseClicked(MouseEvent e) {

                        try {

                                currentMapTool.mouseClicked(e);

                        } catch (BehaviorException t) {

                                throwException(t);

                        }

                }

                /**

                 * @see java.awt.event.MouseListener#mouseEntered(java.awt.event.MouseEvent)

                 */

                public void mouseEntered(MouseEvent e) {

                        try {

                                currentMapTool.mouseEntered(e);

                        } catch (BehaviorException t) {

                                throwException(t);

                        }

                }

                /**

                 * @see java.awt.event.MouseListener#mouseExited(java.awt.event.MouseEvent)

                 */

                public void mouseExited(MouseEvent e) {

                        try {

                                currentMapTool.mouseExited(e);

                        } catch (BehaviorException t) {

                                throwException(t);

                        }

                }

                /**

                 * @see java.awt.event.MouseListener#mousePressed(java.awt.event.MouseEvent)

                 */

                public void mousePressed(MouseEvent e) {

                        try {

                                currentMapTool.mousePressed(e);

                        } catch (BehaviorException t) {

                                throwException(t);

                        }

                }

                /**

                 * @see java.awt.event.MouseListener#mouseReleased(java.awt.event.MouseEvent)

                 */

                public void mouseReleased(MouseEvent e) {

                        try {

                                currentMapTool.mouseReleased(e);

                        } catch (BehaviorException t) {

                                throwException(t);

                        }

                }

                /**

                 * @see java.awt.event.MouseWheelListener#mouseWheelMoved(java.awt.event.MouseWheelEvent)

                 */

                public void mouseWheelMoved(MouseWheelEvent e) {

                        try {

                                currentMapTool.mouseWheelMoved(e);

                        } catch (BehaviorException t) {

                                throwException(t);

                        }

                }

                /**

                 * @see java.awt.event.MouseMotionListener#mouseDragged(java.awt.event.MouseEvent)

                 */

                public void mouseDragged(MouseEvent e) {

                        try {

                                currentMapTool.mouseDragged(e);

                        } catch (BehaviorException t) {

                                throwException(t);

                        }

                }

                /**

                 * @see java.awt.event.MouseMotionListener#mouseMoved(java.awt.event.MouseEvent)

                 */

                public void mouseMoved(MouseEvent e) {

                        try {

                                currentMapTool.mouseMoved(e);

                        } catch (BehaviorException t) {

                                throwException(t);

                        }

                }

        }

        /**

         * Listener sobre el MapContext.

         *

         * @author Fernando Gonz?lez Cort?s

         */

        public class MapContextListener implements AtomicEventListener {

                /**

                 * @see com.iver.cit.gvsig.fmap.AtomicEventListener#atomicEvent(com.iver.cit.gvsig.fmap.AtomicEvent)

                 */

                public void atomicEvent(AtomicEvent e) {

                        boolean redraw = false;

                        LayerEvent[] layerEvents = e.getLayerEvents();

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

                                if (layerEvents[i].getProperty().equals("visible")) {

                                        redraw = true;

                                }

                        }

                        if (e.getColorEvents().length > 0) {

                                redraw = true;

                        }

                        if (e.getExtentEvents().length > 0) {

                                redraw = true;

                        }

                        if (e.getLayerCollectionEvents().length > 0) {

                                redraw = true;

                        }

                        if (e.getLegendEvents().length > 0) {

                                redraw = true;

                        }

                        if (e.getSelectionEvents().length > 0) {

                                redraw = true;

                        }

                        if (redraw) {

                System.out.println("MapContextListener redraw");

                                MapControl.this.drawMap(false);

                        }

                }

        }

        public ViewPort getViewPort() {

                return vp;

        }

        /**

         * Returns a HashMap with the tools that have been registered

         * in the Mapcontrol.

         */

        public HashMap getNamesMapTools() {

                return namesMapTools;

        }

        public void commandRepaint() {

                drawMap(false);

        }

        public void commandRefresh() {

                // TODO Auto-generated method stub

        }

        public void setPrevTool() {

                setTool(prevTool);

        }

}