Application: gvSIG desktop » gvSIG Document Layout

/* gvSIG. Geographic Information System of the Valencian Government

 *

 * Copyright (C) 2007-2008 Infrastructures and Transports Department

 * of the Valencian Government (CIT)

 *

 * 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., 51 Franklin Street, Fifth Floor, Boston,

 * MA  02110-1301, USA.

 *

 */

package org.gvsig.app.project.documents.layout.fframes;

import java.awt.BasicStroke;

import java.awt.Color;

import java.awt.Dimension;

import java.awt.Font;

import java.awt.Graphics2D;

import java.awt.Point;

import java.awt.Rectangle;

import java.awt.geom.AffineTransform;

import java.awt.geom.Area;

import java.awt.geom.NoninvertibleTransformException;

import java.awt.geom.Point2D;

import java.awt.geom.Rectangle2D;

import java.awt.image.BufferedImage;

import org.cresques.cts.IProjection;

import org.gvsig.andami.PluginServices;

import org.gvsig.andami.messages.NotificationManager;

import org.gvsig.andami.ui.mdiFrame.NewStatusBar;

import org.gvsig.app.project.Project;

import org.gvsig.app.project.ProjectManager;

import org.gvsig.app.project.documents.Document;

import org.gvsig.app.project.documents.layout.DefaultLayoutNotification;

import org.gvsig.app.project.documents.layout.FLayoutFunctions;

import org.gvsig.app.project.documents.layout.FLayoutUtilities;

import org.gvsig.app.project.documents.layout.LayoutNotification;

import org.gvsig.app.project.documents.layout.TocModelChangedNotification;

import org.gvsig.app.project.documents.view.ViewDocument;

import org.gvsig.compat.print.PrintAttributes;

import org.gvsig.fmap.dal.exception.ReadException;

import org.gvsig.fmap.geom.Geometry;

import org.gvsig.fmap.geom.Geometry.SUBTYPES;

import org.gvsig.fmap.geom.GeometryLocator;

import org.gvsig.fmap.geom.GeometryManager;

import org.gvsig.fmap.geom.exception.CreateEnvelopeException;

import org.gvsig.fmap.geom.primitive.Envelope;

import org.gvsig.fmap.mapcontext.MapContext;

import org.gvsig.fmap.mapcontext.MapContextException;

import org.gvsig.fmap.mapcontext.ViewPort;

import org.gvsig.fmap.mapcontext.events.AtomicEvent;

import org.gvsig.fmap.mapcontext.events.ColorEvent;

import org.gvsig.fmap.mapcontext.events.ExtentEvent;

import org.gvsig.fmap.mapcontext.events.FMapEvent;

import org.gvsig.fmap.mapcontext.events.ProjectionEvent;

import org.gvsig.fmap.mapcontext.events.listeners.AtomicEventListener;

import org.gvsig.fmap.mapcontext.events.listeners.ViewPortListener;

import org.gvsig.fmap.mapcontext.layers.CancelationException;

import org.gvsig.fmap.mapcontext.layers.LayerCollectionEvent;

import org.gvsig.fmap.mapcontext.layers.LayerCollectionListener;

import org.gvsig.fmap.mapcontext.layers.LayerEvent;

import org.gvsig.fmap.mapcontext.layers.LayerPositionEvent;

import org.gvsig.fmap.mapcontext.rendering.legend.events.LegendChangedEvent;

import org.gvsig.fmap.mapcontext.rendering.legend.events.listeners.LegendListener;

import org.gvsig.gui.beans.Messages;

import org.gvsig.tools.ToolsLocator;

import org.gvsig.tools.dynobject.DynStruct;

import org.gvsig.tools.locator.LocatorException;

import org.gvsig.tools.persistence.PersistenceManager;

import org.gvsig.tools.persistence.PersistentState;

import org.gvsig.tools.persistence.exception.PersistenceException;

import org.slf4j.Logger;

import org.slf4j.LoggerFactory;

/**

 * FFrame used for embedding a View in the Layout. The View is not actually

 * inserted on the Layout, but it is used together with the MapContext

 * in order do draw an image which is then painted on the FFrame. Therefore,

 * no MapControl is used in current implementation, but a similar behavior

 * is simulated by the FFrameView. The original MapContext is cloned when

 * assigned to the FFrameView, which is then used for drawing.

 * 

 * The FFrameView and the associated View can be synchronized, depending

 * on the values of {@link #getTypeScale()} and {@link #getLinked()}.

 * 

 * The main synchronization logic is kept on two internal classes: 

 * {@link OwnMapContextListener} and {@link ViewDocListener}. The first one

 * listens for events on the FFrameView and synchronizes the View accordingly.

 * The second one listens for events on the View and synchronizes the FFrameView

 * accordingly. There synchronization process is flagged using

 * {@link #b_updating} and {@link #b_updating}, in order

 * to avoid incurring on infinite synchronization loops. 

 * 

 * @author Vicente Caballero Navarro

 * @author Cesar Martinez Izquierdo

 */

public class FFrameView extends FFrame implements IFFrameUseProject,

                IFFrameUseFMap, LayoutPanelListener{

    public static final String PERSISTENCE_DEFINITION_NAME = "FFrameView";

    private static final String QUALITY_FIELD = "quality";

    private static final String MAPUNITS_FIELD = "mapUnits";

    private static final String SCALE_FIELD = "scale";

    private static final String VIEW_FIELD = "view";

    private static final String ENVELOPE_FIELD = "envelope";

    private static final String SHOWGRID_FIELD = "showGrid";

    private static final String GRID_FIELD = "gridview";

    private static final String HAS_TOC_FIELD = "hasToc";

    private static final String LAYER_SYNC_FIELD = "layerSync";

    private static final String EXTENT_SYNC_FIELD = "extentSync";

    private static final String SCALE_TYPE_FIELD = "scaleType";

    // following fields are unused - they are kept for backward-compatibility 

    private static final String EXTENSION_FIELD = "extension";

    private static final String BLINKED_FIELD = "bLinked";

    private static final String MODE_FIELD = "mode";

    private static final String TYPESCALE_FIELD = "typeScale";

    private static final String MAPCONTEXT_FIELD = "mapContext";

    private static final String VIEWING_FIELD = "viewing";

    private static final Logger logger = LoggerFactory

        .getLogger(FFrameView.class);

    public static final int PRESENTATION = 0;

    public static final int DRAFT = 1;

    protected boolean syncLayers = true;

    protected boolean syncExtents = true;

    protected int quality = PRESENTATION;

    protected ViewDocument viewDocument = null;

    protected MapContext mapContext = null;

    protected int mapUnits = 1; // Meters.

    protected BufferedImage m_image = null;

    protected AffineTransform mapAT = null;

    protected Project project = null;

    protected double scaleAnt;

    protected Point origin;

    protected Point2D p1;

    protected Point2D p2;

    protected IFFrame grid;

    protected boolean showGrid = false;

        private boolean b_updating = false;

        protected boolean b_validCache = false;

        protected boolean b_drawing = false;

        protected ViewDocListener viewDocListener;

        protected OwnMapContextListener ownMapContextListener;

        private boolean b_hasToc = true;

    protected static final GeometryManager geomManager = GeometryLocator.getGeometryManager();

        /**

         * When we load a FFrameview from project, it will receive a wrong

         * extentChanged event the first time the View is painted, so we must

         * ignore this first event. 

         */

        private boolean b_frameInitialized = true;

        protected AffineTransform originalGraphicsAT = null;

        protected Rectangle originalClip = null;

        private SCALE_TYPE scaleType = SCALE_TYPE.NORMAL;

        private Double fixedScale = null;

        private Envelope fixedExtent = null;

    /**

     * Creates a new FFrameView object.

     */

    public FFrameView() {

        num++;

        createListeners();

    }

    protected void createListeners() {

            viewDocListener = new ViewDocListener();

            ownMapContextListener = new OwnMapContextListener();

    }

    /**

     * Returns a description of the FFrame

     * 

     * @return Description.

     */

    public String toString() {

        if (getView() == null) {

            return "FFrameView " + num + ": " + "Vacio";

        }

        return "FFrameView " + num + ": " + getView().getName();

    }

    /**

     * Sets the scale of the MapContext contained in this FFrameView

     * 

     * @param d Scale to be set

     */

    public void setScale(double d) {

            if (getMapContext()!=null) {

                    getMapContext().setScaleView((long) d);

            }

    }

    /**

     * Sets a new Envelope on the MapContext contained in

     * this FFrameView

     * 

     * @param r Envelope to be set

     */

    public void setNewEnvelope(Envelope r) {

            getMapContext().getViewPort().setEnvelope(r);

            updateScaleCtrl();

    }

    /**

     * Calculates the resolution (measured on dots per inch, DPI) to be

     * considered to draw the FFrameView on screen. It is calculated by

     * dividing the width (in pixels) of the FFrame divided by the width

     * in inches of the paper.

     */

    protected double getDrawPaperDPI() {

            AffineTransform at = null;

            if (getLayoutContext()!=null) {

                    at = getLayoutContext().getAT();

            }

            return (2.54*getBoundingBox(at).width)/getBoundBox().width;        

    }

    /**

     * Returns the MapContext contained in this FFrameView, which is

     * usually a clone of the associated View. This MapContext

     * may be synchronized with the View one, depending on the

     * scale type that has been set (see {{@link #getTypeScale()}.

     * 

     * @return The mapContext object

     */

    public MapContext getMapContext() {

        return mapContext;

    }

    /**

     * Sets the quality of the visualization of the FFrame on screen.

     * Valid values include {@link #DRAFT} and {@link #PRESENTATION}.

     * Draft will disable the frame normal drawing, which will be

     * replaced by an empty rectangle only showing the name of the

     * frame.  

     * 

     * @param q Integer representing the quality.

     */

    public void setQuality(int q) {

        quality = q;

    }

    /**

     * Gets the quality of the visualization of the FFrame on screen.

     * Valid values include {@link #DRAFT} and {@link #PRESENTATION}.

     * Draft will disable the frame normal drawing, which will be

     * replaced by an empty rectangle only showing the name of the

     * frame.  

     * 

     * @param q The selected quality

     */

    public int getQuality() {

        return quality;

    }

    /**

     * Sets the MapContext associated with this FFrameView, which will

     * be used to clone the layers and synchronize the FFrameView with

     * the associated View 

     * 

     * @param viewMapContext

     */

    public void setViewMapContext(MapContext viewMapContext) {

            Envelope oldEnvelope = null;

            if (mapContext!=null) {

                    clearOwnListeners(mapContext);

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

                            oldEnvelope = mapContext.getViewPort().getEnvelope();

                    }

            }

            if (viewMapContext==null) { // disconnect the view from the map

                    this.mapContext=null;

                    return;

            }

            try {

                    if (syncLayers){

                            mapContext =

                                            viewMapContext.createNewFMap(

                                                            (ViewPort) viewMapContext.getViewPort().clone());

                    }

                    else {

                            mapContext = viewMapContext.cloneFMap();

                            mapContext.setViewPort((ViewPort) viewMapContext

                                            .getViewPort().clone());

                    }

                    ViewPort newViewPort = getMapContext().getViewPort();

                    if (!syncExtents && oldEnvelope!=null) {

                            // if extent is not synced with the view, restore the previous

                            // envelope if existing

                            newViewPort.setEnvelope(oldEnvelope);

                    }

                    AffineTransform at;

                    if (getLayoutContext()!=null) {

                            at = getLayoutContext().getAT();

                    }

                    else {

                            at = null;

                    }

                    newViewPort.setImageSize(new Dimension((int) getBoundingBox(at).width,

                                    (int) getBoundingBox(at).height));

                    newViewPort.setDPI(getDrawPaperDPI());

                    setListeners();

                    updateScaleCtrl();

                    setTocModel();

            } catch (CloneNotSupportedException e1) {

                    NotificationManager.addError("Excepci?n :", e1);

            }

    }

    /**

     * Sets the View associated with this FFrameView, which will

     * be used to clone the MapContext and the layers. It will

     * also used to synchronize the FFrameView with

     * the associated View, depending on the selected scale type 

     * 

     * @param viewMapContext

     */

    public void setView(ViewDocument dvd) {

            ViewDocument oldDoc = viewDocument;

            if (oldDoc!=null) {

                    if (oldDoc.getMapContext()!=null) {

                            clearViewListeners(oldDoc.getMapContext());

                    }

            }

        viewDocument = dvd;

        if (dvd!=null) {

            setViewMapContext(dvd.getMapContext());

        }

        else {

                setViewMapContext(null);

        }

    }

    /**

     * Gets the associated View

     * 

     * @return The associated view

     * @see {@link #setView(ViewDocument)}

     */

    public ViewDocument getView() {

        return viewDocument;

    }

    /**

     * Draws the FFrameView on the provided Graphics, according to the

     * provided affine transform and the visible rectangle.

     * 

     * @param g Graphics2D

     * @param at Affine transform to translate sheet coordinates (in cm)

     *                                 to screen coordinates (in pixels)

     * @param visibleLayoutDocRect visible rectangle

     * @param imgBase Image used to speed up the drawing process

     */

    public void draw(Graphics2D g, AffineTransform at, Rectangle2D visibleLayoutDocRect, BufferedImage imgBase) {

        Rectangle2D.Double fframeViewRect = getBoundingBox(at);

        Rectangle2D.Double visibleArea = (Rectangle2D.Double) getVisibleRect(visibleLayoutDocRect, fframeViewRect);

        if (visibleArea==null) {

                return;

        }

        preDraw(g, fframeViewRect, visibleArea);

        if (getMapContext() == null) {

                drawEmpty(g);

        } else {

                if (FLayoutUtilities.hasEditingLayers(getView())) {

                        /*

                         * We are not drawing if any layer is in editing mode

                         */

                        drawMessage(g, Messages.getText(

                                        "_Cannot_draw_view_if_layers_in_editing_mode"));

                } else {

                        if (getQuality() == PRESENTATION) {

                                try {

                                        drawPresentation(g, at, fframeViewRect, visibleArea, imgBase);

                                } catch (Exception exc) {

                                        drawMessage(g, FLayoutFunctions.getLastMessage(exc));

                                }

                        } else {

                                drawDraft(g);

                        }               

                }

        }

        postDraw(g, fframeViewRect, at); 

        if (showGrid && grid != null) {           

            grid.draw(g, at, visibleLayoutDocRect, imgBase);

        }    

    }

    private void drawMessage(Graphics2D g, String msg) {

        Rectangle2D r = getBoundingBox(null);

        g.setColor(Color.lightGray);

        g.fillRect((int) r.getX(), (int) r.getY(), (int) r.getWidth(),

            (int) r.getHeight());

        g.setColor(Color.darkGray);

        g.setStroke(new BasicStroke(2));

        g.drawRect((int) r.getX(), (int) r.getY(), (int) r.getWidth(),

            (int) r.getHeight());

        g.setColor(Color.black);

        int scale = (int) (r.getWidth() / 24);

        Font f = new Font("SansSerif", Font.PLAIN, scale);

        g.setFont(f);

        if (msg==null) {

                msg = Messages.getText("error");

        }

        g.drawString(msg, (int) (r.getCenterX() - ((msg.length() * scale) / 4)),

                        (int) (r.getCenterY()));

    }

    /**

     * Gets the visible envelope, in map coordinates

     * 

     * @param fframeViewRect Rectangle defining the bounding box of the

     * FFrameView, in screen coordinates

     * @param visiblefframeViewRect Rectangle defining the bounding box

     * of the visible area of the fframeView, in screen coordinates

     * @return

     */

    protected Envelope getVisibleEnvelope(Rectangle2D.Double fframeViewRect,

            Rectangle2D.Double visiblefframeViewRect) {

            Envelope oldEnv = getMapContext().getViewPort().getAdjustedEnvelope();

            double widthFactor = ((int)visiblefframeViewRect.width) / fframeViewRect.width;

            double heightFactor = ((int)visiblefframeViewRect.height) / fframeViewRect.height;

            double newWidth = oldEnv.getLength(0)*widthFactor;

            double newHeight = oldEnv.getLength(1)*heightFactor;

        double translateX = visiblefframeViewRect.x - fframeViewRect.x;

        double translateY = visiblefframeViewRect.y - fframeViewRect.y;

        double translateFactorX = translateX / fframeViewRect.width;

        double translateFactorY = translateY / fframeViewRect.height;

        double newX = oldEnv.getMinimum(0) + translateFactorX*oldEnv.getLength(0);

        double newMaxY =  oldEnv.getMaximum(1) - translateFactorY*oldEnv.getLength(1);

        double newMaxX = newX + newWidth;

        double newY = newMaxY - newHeight;

        Envelope newEnv = null;

                try {

                        newEnv = geomManager.createEnvelope(newX, newY, newMaxX, newMaxY, SUBTYPES.GEOM2D);

                } catch (CreateEnvelopeException e) {

                        logger.error("Error calculating visible extent", e);

                }

        return newEnv;

    }

    protected void drawPresentation(

        Graphics2D g,

        AffineTransform affineTransform,

        Rectangle2D.Double fframeViewRect,

        Rectangle2D.Double visibleRect,

        BufferedImage imgBase) throws Exception {

            b_drawing = true;

            int drawWidth = (int)visibleRect.width;

            int drawHeight = (int)visibleRect.height;

            Envelope oldEnvelope = null;

        if (!visibleRect.equals(fframeViewRect)) {

                // if visible area is smaller than the fframe, we will only draw this area,

                // so we need to tell the ViewPort the image size and extent for drawing,

                // and restore the real extent after drawing

            oldEnvelope = getMapContext().getViewPort().getEnvelope();

            if (oldEnvelope==null) {

                    return;

            }

                Envelope newEnvelope = getVisibleEnvelope(fframeViewRect, visibleRect);

                // image size must be set before the envelope, as it has influence on the adjustedExtent

                getMapContext().getViewPort().setImageSize(new Dimension(drawWidth, drawHeight));

                getMapContext().getViewPort().setEnvelope(newEnvelope);

        }

        else {

                getMapContext().getViewPort().setImageSize(new Dimension(drawWidth, drawHeight));

                getMapContext().getViewPort().refreshExtent();

        }

        // map origin should be calculated using the full fframeview, as the visible position will be relative

        Point mapOrigin = new Point((int)fframeViewRect.getMinX(), (int)fframeViewRect.getMaxY());

        // paint the MapContext on m_image, if not already cached

        createImage(affineTransform, drawWidth, drawHeight, mapOrigin);

        //Draw the created image

        drawImage(g, m_image, visibleRect);

        if (oldEnvelope!=null) {

                // restore real envelope and image size

                getMapContext().getViewPort().setImageSize(new Dimension((int)fframeViewRect.width, (int) fframeViewRect.height));

                getMapContext().getViewPort().setEnvelope(oldEnvelope);

        }

        scaleAnt = affineTransform.getScaleX();

        origin = mapOrigin;

        b_drawing = false;

    }

    protected void createImage(AffineTransform affineTransform,

                    int width, int height, Point mapOrigin) throws ReadException, MapContextException {

            ViewPort viewPort = this.getMapContext().getViewPort();

        //If the image has to be created...

            if (origin == null ||

                            !origin.equals(mapOrigin) ||

                            affineTransform.getScaleX() != scaleAnt ||

                            m_image == null ||

                            !b_validCache) { 

                    viewPort.setDPI(getDrawPaperDPI());

                viewPort.setImageSize(new Dimension(width, height)); 

            m_image =

                    new BufferedImage(

                                    width,

                                    height,

                                    BufferedImage.TYPE_INT_ARGB);

            Graphics2D gimg = (Graphics2D) m_image.createGraphics();

            getMapContext().draw(m_image, gimg, getScale());

            gimg.dispose();

            b_validCache = true;

        } 

    }

    protected void drawImage(Graphics2D g, BufferedImage image,

                    Rectangle2D.Double visibleRectangle) {

            Color theBackColor = getMapContext().getViewPort().getBackColor();

        if (theBackColor != null) {

            g.setColor(theBackColor);

            g.fillRect((int) visibleRectangle.x, (int) visibleRectangle.y,

                            (int)visibleRectangle.width,

                            (int)visibleRectangle.height);

        }

        g.drawImage(m_image, 

                        (int) visibleRectangle.x,

                        (int) visibleRectangle.y,

                        null);            

    }

    protected void preDraw(Graphics2D g, Rectangle2D.Double fframeViewRect, Rectangle2D.Double visibleRect){

            originalGraphicsAT = (AffineTransform) g.getTransform().clone();

        if (g.getClipBounds() != null) {

            originalClip = (Rectangle) g.getClipBounds().clone();

        }

        AffineTransform rotationAT = getRotationAT();

        if (rotationAT!=null) {

                g.transform(rotationAT);

        }

        g.setClip((int) visibleRect.getMinX(), (int) visibleRect.getMinY(),

            (int) visibleRect.getWidth(), (int) visibleRect.getHeight());

    }

    protected void postDraw(Graphics2D g, Rectangle2D.Double fframeViewRect, AffineTransform at){

            g.setTransform(originalGraphicsAT);

        if (getMapContext() != null) {

            setATMap(getMapContext().getViewPort().getAffineTransform());

        }

        if (originalClip != null) {

            g.setClip(originalClip.x, originalClip.y, originalClip.width, originalClip.height);

        }            

    }

    /**

     * @deprecated Use {@link #postDraw(Graphics2D, java.awt.geom.Rectangle2D.Double, AffineTransform)} instead.

     */

    @Deprecated

    protected void postDraw(Graphics2D g, Rectangle2D.Double rectangleLayout, Rectangle2D rectangleView, BufferedImage imgBase, Rectangle originalClip, AffineTransform at) {

            postDraw(g, rectangleLayout, at);

    }

    /**

     * @deprecated Use {@link #preDraw(Graphics2D, java.awt.geom.Rectangle2D.Double, java.awt.geom.Rectangle2D.Double) instead

     */

    @Deprecated

    protected Rectangle preDraw(Graphics2D g, Rectangle2D.Double rectangleLayout){

            Rectangle originalClip = null;

        if (g.getClipBounds() != null) {

            originalClip = (Rectangle) g.getClipBounds().clone();

        }

            preDraw(g, rectangleLayout, rectangleLayout);

            return originalClip;

    }

    public void print(Graphics2D g, AffineTransform at, Geometry geom,

        PrintAttributes printAttributes) {

        Rectangle2D.Double rectangleLayout = getBoundingBox(at);  

        preDraw(g, rectangleLayout, rectangleLayout);

        print(g, at, printAttributes);

        postDraw(g, rectangleLayout, at);

        if (showGrid && grid != null) {

            grid.print(g, at, geom, printAttributes);

        }    

    }

    protected void print(Graphics2D g, AffineTransform at, PrintAttributes printAttributes) {

        Rectangle2D.Double layoutRectangle = getBoundingBox(at);

        // FIXME: should we clone the mapcontext and viewport before printing ??

        // otherwise we will probably have unexpected results if the user modifies

        // the layout while printing (answer: not an issue at the moment as printing is

        // a blocking operation)

        ViewPort viewPort = this.getMapContext().getViewPort();

        Point2D old_offset = viewPort.getOffset();

        Dimension old_imgsize = viewPort.getImageSize();

        double oldDpi = viewPort.getDPI();

        viewPort.setOffset(new Point2D.Double(layoutRectangle.x, layoutRectangle.y));

        viewPort.setImageSize(new Dimension((int) layoutRectangle.width, (int) layoutRectangle.height));

        double dpi = PrintAttributes.PRINT_QUALITY_DPI[printAttributes.getPrintQuality()];

        viewPort.setDPI(dpi);

        //Draw the backgroung color of the map

        Color theBackColor = viewPort.getBackColor();

        if (theBackColor != null) {

            g.setColor(theBackColor);

            g.fillRect((int) layoutRectangle.x, (int) layoutRectangle.y, viewPort

                    .getImageWidth(), viewPort

                    .getImageHeight());

        }        

        //Print the map

        try {

            this.getMapContext().print(g, getScale(), printAttributes);

        } catch (ReadException e) {

            NotificationManager.addError(e.getMessage(), e);

        } catch (MapContextException e) {

            NotificationManager.addError(e.getMessage(), e);

        }      

        // Restore offset, imgsize

        viewPort.setOffset(old_offset);

        viewPort.setImageSize(old_imgsize);

        viewPort.setDPI(oldDpi);

    }

    /**

     * Rellena la unidad de medida en la que est? la vista.

     * 

     * @param i

     *            entero que representa la unidad de medida de la vista.

     */

    public void setMapUnits(int i) {

        mapUnits = i;

    }

    /**

     * Obtiene la unidad de medida en la que est? la vista.

     * 

     * @return Unidad de medida.

     */

    public int getMapUnits() {

        return mapUnits;

    }

    /**

     * Devuelve la escala seg?n el tipo de escala que se haya seleccionado al

     * a?adida la vista.

     * 

     * @return escala.

     */

    public long getScale() {

            return (long) getMapContext().getScaleView();

    }

    /**

     * Inserta la imagen para repintar el FFrameView.

     * 

     * @param bi

     *            Imagen para repintar.

     */

    public void setBufferedImage(BufferedImage bi) {

        m_image = bi;

    }

    /**

     * Devuelve la imagen para repintar.

     * 

     * @return Imagen para repintar.

     */

    public BufferedImage getBufferedImage() {

        return m_image;

    }

    /**

     * Devuelve la MAtriz de transformaci?n utilizada por la FFrameView.

     * 

     * @return MAtriz de transformaci?n.

     */

    public AffineTransform getATMap() {

        return mapAT;

    }

    /**

     * Inserta la matriz de transformaci?n.

     * 

     * @param transform

     *            Matriz de transformaci?n.

     */

    public void setATMap(AffineTransform transform) {

        mapAT = transform;

    }

    /**

     * Inserta el proyecto.

     * 

     * @param p

     *            Proyecto.

     */

    public void setProject(Project p) {

        project = p;

    }

    /**

     * @see org.gvsig.app.project.documents.layout.fframes.IFFrame#getNameFFrame()

     */

    public String getNameFFrame() {

        return PluginServices.getText(this, "Vista") + num;

    }

    public String getName() {

        return PERSISTENCE_DEFINITION_NAME;

    }

    /**

     * DOCUMENT ME!

     * 

     * @param arg0

     *            DOCUMENT ME!

     * 

     * @return DOCUMENT ME!

     */

    public boolean compare(Object arg0) {

        if (!(arg0 instanceof FFrameView)) {

            return false;

        }

        if (!this.getName().equals(((FFrameView) arg0).getName())) {

            return false;

        }

        if (Math.abs(this.getBoundBox().getWidth()

            - (((FFrameView) arg0).getBoundBox().getWidth())) > 0.05) {

            return false;

        }

        if (Math.abs(this.getBoundBox().getHeight()

            - (((FFrameView) arg0).getBoundBox().getHeight())) > 0.05) {

            return false;

        }

        if (!this.toString().equals(((FFrameView) arg0).toString())) {

            return false;

        }

        if (this.getMapContext() != null

            && !this.getMapContext()

                .equals(((FFrameView) arg0).getMapContext())) {

            return false;

        }

        if (this.getRotation() != ((FFrameView) arg0).getRotation()) {

            return false;

        }

        return true;

    }

    public void updateScaleCtrl() {

            NewStatusBar statusbar = PluginServices.getMainFrame().getStatusBar();

            MapContext mapContext = this.getMapContext();

            if (mapContext==null) {

                    return;

            }

            statusbar.setMessage("units",

                            PluginServices.getText(this, mapContext.getDistanceName()));

            String scale; 

            if (fixedScale!=null && getScaleType()==SCALE_TYPE.FIXED_SCALE) {

                    // prefer fixedScale as getScaleView() may offer slight differences

                    // because the influence of the adjusted envelope

                    scale = String.valueOf(fixedScale.longValue());

            }

            else {

                    scale = String.valueOf(getMapContext().getScaleView());

            }

            statusbar.setControlValue("layout-view-change-scale",

                            scale);

            IProjection proj = mapContext.getViewPort().getProjection();

            if (proj != null) {

                    statusbar.setMessage("projection", proj.getAbrev());

            } else {

                    statusbar.setMessage("projection", "");

            }

    }

    public void fullExtent() throws ReadException {

        setNewEnvelope(getMapContext().getFullEnvelope());

    }

    public void setPointsToZoom(Point2D px1, Point2D px2) {

        p1 = px1;

        p2 = px2;

    }

    public void movePoints(Point2D px1, Point2D px2) {

        double difX = -px2.getX() + px1.getX();

        double difY = -px2.getY() + px1.getY();

        if (p1 != null) {

            p1.setLocation(p1.getX() + difX, p1.getY() + difY);

            p2.setLocation(p2.getX() + difX, p2.getY() + difY);

        }

    }

    /**

     * This method deals with places where this fframeview and the cloned

     * fframeview (frame) are registered as listeners. The goal should be

     * leaving the cloned instance (frame) as listener in the same way

     * that 'this' instance is doing.

     */

    protected void cloneActions(FFrameView frame) {

    }

    public Object clone() throws CloneNotSupportedException {

        FFrameView frame = (FFrameView) super.clone();

        frame.createListeners(); // necessary to create the listeners within the right scope

        frame.setView(this.getView());

        if (grid != null) {

            FFrameGrid newGrid = (FFrameGrid) this.grid.clone();

            newGrid.setFFrameDependence(frame);

            frame.setGrid(newGrid);

        }

        cloneActions(frame);

        return frame;

    }

    public void setGrid(IFFrame grid) {

        this.grid = grid;

        this.grid.setRotation(this.getRotation());

    }

    public IFFrame getGrid() {

        return this.grid;

    }

    public void setRotation(double rotation) {

        super.setRotation(rotation);

        if (grid != null) {

            grid.setRotation(rotation);

        }

    }

    public void showGrid(boolean b) {

        showGrid = b;

    }

    public boolean isShowGrid() {

        return showGrid;

    }

    public void refreshOriginalExtent() {

    }

    public static void registerPersistent() {

        PersistenceManager manager = ToolsLocator.getPersistenceManager();

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

            DynStruct definition =

                manager.addDefinition(FFrameView.class,

                    PERSISTENCE_DEFINITION_NAME,

                    "FFrameView persistence definition", null, null);

            definition.extend(manager

                .getDefinition(FFrame.PERSISTENCE_DEFINITION_NAME));

            definition.addDynFieldInt(QUALITY_FIELD).setMandatory(true);

            definition.addDynFieldInt(MAPUNITS_FIELD).setMandatory(true);

            definition.addDynFieldDouble(SCALE_FIELD).setMandatory(false);

            definition.addDynFieldObject(VIEW_FIELD)

                .setClassOfValue(ViewDocument.class).setMandatory(false);

            definition.addDynFieldObject(ENVELOPE_FIELD)

                .setClassOfValue(Envelope.class).setMandatory(false);

            definition.addDynFieldBoolean(SHOWGRID_FIELD).setMandatory(true);

            definition.addDynFieldObject(GRID_FIELD)

                .setClassOfValue(IFFrame.class).setMandatory(false);

            definition.addDynFieldBoolean(HAS_TOC_FIELD).setMandatory(false);

            definition.addDynFieldBoolean(EXTENT_SYNC_FIELD).setMandatory(false);

            definition.addDynFieldBoolean(LAYER_SYNC_FIELD).setMandatory(false);

            definition.addDynFieldInt(SCALE_TYPE_FIELD).setMandatory(false);

            // unused fields, kept for backward compatibility

            definition.addDynFieldInt(MODE_FIELD).setMandatory(false);

            definition.addDynFieldInt(TYPESCALE_FIELD).setMandatory(false);

            definition.addDynFieldBoolean(BLINKED_FIELD).setMandatory(false);

            definition.addDynFieldObject(MAPCONTEXT_FIELD)

            .setClassOfValue(MapContext.class).setMandatory(false);

            definition.addDynFieldInt(VIEWING_FIELD).setMandatory(false);

            definition.addDynFieldInt(EXTENSION_FIELD).setMandatory(false);

        }

    }

    @Override

    public void loadFromState(PersistentState state)

        throws PersistenceException {

        super.loadFromState(state);

        b_frameInitialized = false;

        if (state.hasValue(EXTENT_SYNC_FIELD)) {

                syncExtents = state.getBoolean(EXTENT_SYNC_FIELD);

        }

        else {

                syncExtents = true;

        }

        if (state.hasValue(LAYER_SYNC_FIELD)) {

                syncLayers = state.getBoolean(LAYER_SYNC_FIELD);

        }

        else {

                syncLayers = true;

        }

        Double layoutScale = null;

        if (state.hasValue(SCALE_FIELD)) { 

                layoutScale = state.getDouble(SCALE_FIELD);

        }

            Envelope envelope = (Envelope) state.get(ENVELOPE_FIELD); 

        if (state.hasValue(SCALE_TYPE_FIELD)) {

                int value = state.getInt(SCALE_TYPE_FIELD);

                if (value==SCALE_TYPE.FIXED_EXTENT.ordinal()) {

                        scaleType = SCALE_TYPE.FIXED_EXTENT;

                        fixedExtent = envelope;

                }

                else if (value==SCALE_TYPE.FIXED_SCALE.ordinal()) {

                        scaleType = SCALE_TYPE.FIXED_SCALE;

                        fixedScale = layoutScale;

                }

                // else use the default value

        }

        quality = state.getInt(QUALITY_FIELD);

        mapUnits = state.getInt(MAPUNITS_FIELD);;

        viewDocument = (ViewDocument) state.get(VIEW_FIELD);

        if (state.hasValue(HAS_TOC_FIELD)) {

                this.b_hasToc = state.getBoolean(HAS_TOC_FIELD);

        }        

        if (viewDocument!=null) {

                this.setView(viewDocument);

                // it is crucial to don't persist the MapContext and get a cloned one from the View instead,

                // as the cloned instance is different from the one created using persistence. In particular,

                // the cloned one will share the EventBuffer with the original one, while persistence would

                // create 2 separate EventBuffers, which will then have a very stange behaviour

        }

        if (getMapContext()!=null) {

                if (layoutScale!=null) {

                        getMapContext().setScaleView(layoutScale.longValue());

                }

                getMapContext().getViewPort().setEnvelope(envelope);

                if (this.getLayoutContext()!=null) {

                        this.getLayoutContext().setTocModel(getMapContext());

                }

        }

        showGrid = state.getBoolean(SHOWGRID_FIELD);

        grid = (IFFrame) state.get(GRID_FIELD);

    }

    @Override

    public void saveToState(PersistentState state) throws PersistenceException {

        super.saveToState(state);

        state.set(EXTENT_SYNC_FIELD, syncExtents);

        state.set(LAYER_SYNC_FIELD, syncLayers);

        state.set(QUALITY_FIELD, quality);

        state.set(MAPUNITS_FIELD, mapUnits);

        state.set(VIEW_FIELD, viewDocument);

        state.set(HAS_TOC_FIELD, b_hasToc);

        state.set(SCALE_TYPE_FIELD, scaleType.ordinal());

        if (getMapContext() != null

            && getMapContext().getViewPort().getEnvelope() != null) {

                if (scaleType==SCALE_TYPE.FIXED_SCALE) {

                        if (fixedScale==null) {

                                fixedScale = new Double(getMapContext().getScaleView());

                        }

                        state.set(SCALE_FIELD, (double)fixedScale);

                }

                else {

                        state.set(SCALE_FIELD, (double)getMapContext().getScaleView());        

                }

                if (scaleType == SCALE_TYPE.FIXED_EXTENT) {

                        if (fixedExtent==null) {

                                fixedExtent = getMapContext().getViewPort().getAdjustedEnvelope();

                        }

                        state.set(ENVELOPE_FIELD, fixedExtent);

                }

                else {

                        state.set(ENVELOPE_FIELD, getMapContext().getViewPort()

                        .getAdjustedEnvelope());        

                }

        }

        state.set(SHOWGRID_FIELD, showGrid);

        state.set(GRID_FIELD, grid);

    }

    @Override

    public void setBoundBox(Rectangle2D r) {

            super.setBoundBox(r);

            if (getMapContext()!=null) {

                    AffineTransform at = this.getLayoutContext().getAT();

                    long scale = getMapContext().getScaleView();

                    getMapContext().getViewPort().setImageSize(

                                    new Dimension((int)getBoundingBox(at).getWidth(), (int)getBoundingBox(at).getHeight()));

                    getMapContext().getViewPort().setDPI(getDrawPaperDPI());

                    if (getScaleType()==SCALE_TYPE.FIXED_SCALE) {

                            getMapContext().setScaleView((long) scale);

                    }

                    updateScaleCtrl();

                    refresh();

            }

    }   

    /**

     * Gets the rotation of the frame

     * 

     * @return Rotation in degrees

     */

    public double getMapRotation() {

        return 0;

    }

        protected void invalidateLayout() {

                b_validCache = false;

                if (getLayoutContext()!=null) {

                        getLayoutContext().notifAllObservers();

                }

        observers.notifyObservers(this, 

                new DefaultLayoutNotification(LayoutNotification.LAYOUT_REFRESH));

        }

        protected void invalidateToc() {

                if (getLayoutContext()!=null) {

                        getLayoutContext().notifyTocUpdated(TocModelChangedNotification.Type.ITEM_UPDATED);

                }

        }

        protected void refreshToc() {

                if (getLayoutContext()!=null) {

                        getLayoutContext().notifyTocUpdated(TocModelChangedNotification.Type.MODEL_CHANGED);

                }

        }

        public void refresh() {

        // FIXME: what should we do here? do we really need to invalidate cache??

            b_validCache = false;

        }

    protected void resetListeners() {

                if (this.getMapContext()!=null) {

                        clearOwnListeners(this.getMapContext());

                }

                if (this.getView()!=null && this.getView().getMapContext()!=null) {

                        clearViewListeners(this.getView().getMapContext());

                }

            setListeners();

    }

    protected void setListeners() {

            if (getView()!=null) {

                    if (syncLayers) {

                            getView().getMapContext().addLayerListener(viewDocListener);

                            getView().getMapContext().getLayers().addLayerCollectionListener(viewDocListener);

                            getView().getMapContext().addAtomicEventListener(viewDocListener);

                    }

                    if (getExtentSynced()) {

                            getView().getMapContext().getViewPort().addViewPortListener(viewDocListener);

                    }

            }

            if (getMapContext()!=null) {

                    getMapContext().addLayerListener(ownMapContextListener);

                    getMapContext().getLayers().addLayerCollectionListener(ownMapContextListener);

                    getMapContext().getViewPort().addViewPortListener(ownMapContextListener);

            }

    }

    protected void clearOwnListeners(MapContext mapContext) {

            mapContext.removeLayerListener(ownMapContextListener);

            mapContext.getViewPort().removeViewPortListener(ownMapContextListener);

            mapContext.getLayers().removeLayerCollectionListener(ownMapContextListener);

    }

    protected void clearViewListeners(MapContext mapContext) {

            mapContext.removeLayerListener(viewDocListener);

            mapContext.getViewPort().removeViewPortListener(viewDocListener);

            mapContext.getLayers().removeLayerCollectionListener(viewDocListener);

            mapContext.removeAtomicEventListener(viewDocListener);

    }

    /*

     * (non-Javadoc)

     * @see org.gvsig.tools.dispose.Disposable#dispose()

     */

        public void dispose() {

                try {

                        if (this.getMapContext()!=null) {

                                clearOwnListeners(this.getMapContext());

                        }

                        if (this.getView()!=null && this.getView().getMapContext()!=null) {

                                clearViewListeners(this.getView().getMapContext());

                        }

                }

                catch (Exception ex) {}

                this.viewDocument = null;

                this.mapContext = null;

        }

        public void frameRemoved() {

                if (mapContext!=null) {

                        clearOwnListeners(mapContext);

                }

                if (this.getView()!=null && this.getView().getMapContext()!=null) {

                        clearViewListeners(this.getView().getMapContext());

                }

                if (b_hasToc && getLayoutContext()!=null) {

                        getLayoutContext().setTocModel(null);

                }

                m_image = null; // FIXME: we could instead move it to a LRU cache to keep the last N images

        }

        public void frameAdded() {

                setListeners();

                setTocModel();

                updateScaleCtrl();

        }

        public void setHasToc(boolean hasToc) {

                this.b_hasToc = hasToc;

                setTocModel();

        }

        protected void setTocModel() {

                if (getLayoutContext()!=null) {

                        if (b_hasToc && getMapContext()!=null) {

                                getLayoutContext().setTocModel(getMapContext());

                        }

                        else {

                                getLayoutContext().setTocModel(null);

                        }

                }

        }

        @Override

        protected void doSetSelected(int selectedStatus) {

                boolean oldSelectedStatus = isSelected();

                super.doSetSelected(selectedStatus);

                if (!oldSelectedStatus && isSelected()) { // changed from not selected to selected

                        setTocModel();

                        updateScaleCtrl();

                }

        }

        public boolean getLayerSynced() {

                return syncLayers;

        }

        public void setLayerSynced(boolean synced) {

        syncLayers = synced;

        resetListeners();

        }

        public boolean getExtentSynced() {

                return syncExtents;

        }

        public void setExtentSynced(boolean synced) {

                syncExtents = synced;

        resetListeners();

        }

        /**

         * Returns true if the newEnvelope represents a pan operation on oldEnvelope,

         * (both extents have the same height and width)

         */

        public static boolean isPan(Envelope oldEnvelope, Envelope newEnvelope) {

                if (oldEnvelope!=null && newEnvelope!=null) {

                        double toleranceX = 0.00000001*Math.min(oldEnvelope.getLength(0), newEnvelope.getLength(0));

                        double toleranceY = 0.00000001*Math.min(oldEnvelope.getLength(1), newEnvelope.getLength(1));

                        // we consider it to be a pan if both lengths are equal 

                        // (we use tolerance to avoid direct comparison of double values)

                        if ( ((oldEnvelope.getLength(0)-newEnvelope.getLength(0))<toleranceX)

                                        && ((oldEnvelope.getLength(1)-newEnvelope.getLength(1))<toleranceY) ) {

                                return true;

                        }

                }

                return false;

        }

        /**

         * Calculates the new extent for the FFrame. It is necessary to avoid

         * scale changes when a pan is triggered from the view, as the different

         * size factors from View/FFrameView introduces scale changes even for

         * pans

         * 

         * @param newEnvelope

         * @return

         */

        protected Envelope calculateNewExtent() {

                Envelope newEnvelope = getView().getMapContext().getViewPort().getEnvelope();

                Envelope oldViewEnvelope = null;

                try {

                        if (getView().getMapContext().getViewPort().getEnvelopes().hasPrevious()) {

                                Rectangle2D r = getView().getMapContext().getViewPort().getEnvelopes().get();

                                oldViewEnvelope = GeometryLocator.getGeometryManager().createEnvelope(r.getMinX(), r.getMinY(), r.getMaxX(), r.getMaxY(), SUBTYPES.GEOM2D);

                        }

                        if (isPan(oldViewEnvelope, newEnvelope)) {

                                Envelope envelope = getMapContext().getViewPort().getAdjustedEnvelope();

                                double shiftX = newEnvelope.getMinimum(0) - oldViewEnvelope.getMinimum(0);

                                double shiftY = newEnvelope.getMinimum(1) - oldViewEnvelope.getMinimum(1);

                                double minX = envelope.getMinimum(0) + shiftX;

                                double minY = envelope.getMinimum(1) + shiftY;

                                double maxX = envelope.getMaximum(0) + shiftX;

                                double maxY = envelope.getMaximum(1) + shiftY;

                                return GeometryLocator.getGeometryManager().createEnvelope(minX, minY, maxX, maxY, SUBTYPES.GEOM2D);

                        }

                }

                catch (LocatorException e) {}

                catch (CreateEnvelopeException e) {}

                return newEnvelope;

        }

        private class ViewDocListener

        implements ViewPortListener, LegendListener, LayerCollectionListener, AtomicEventListener {

                public void extentChanged(ExtentEvent e) {

                        if (!b_updating && getExtentSynced()) {

                                if (!b_frameInitialized) {

                                        b_frameInitialized = true;

                                        return;

                                }

                                b_updating = true;

                                if (getMapContext()!=null) {

                                        if (scaleType==SCALE_TYPE.FIXED_EXTENT) {

                                                getView().getMapContext().getViewPort().setEnvelope(fixedExtent);

                                        }

                                        else {

                                                getMapContext().getViewPort().setEnvelope(calculateNewExtent());

                                                if (scaleType==SCALE_TYPE.FIXED_SCALE) {

                                                        getMapContext().setScaleView(Math.round(fixedScale));  

                                                        getView().getMapContext().getViewPort().setEnvelope(getMapContext().getViewPort().getAdjustedEnvelope());

                                                }

                                                updateScaleCtrl();

                                                invalidateLayout();

                                        }

                                }

                                b_updating = false;

                        }                        

                }

                public void backColorChanged(ColorEvent e) {

                        if (!b_updating && syncLayers) {

                                if (getMapContext()!=null) {

                                        b_updating = true;

                                        mapContext.getViewPort().setBackColor(e.getNewColor());

                                        invalidateLayout();

                                        b_updating = true;

                                }

                        }

                }

                public void projectionChanged(ProjectionEvent e) {

                        if (!b_updating && getExtentSynced()) {

                                if (getMapContext()!=null) {

                                        b_updating = true;

                                        getMapContext().getViewPort().setProjection(e.getNewProjection());

                                        invalidateLayout();

                                        // FIXME: force also a view redraw someway??

                                        b_updating = false;

                                }

                        }