Application: gvSIG desktop

/**

 * gvSIG. Desktop Geographic Information System.

 *

 * Copyright (C) 2007-2013 gvSIG Association.

 *

 * 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 3

 * 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.

 *

 * For any additional information, do not hesitate to contact us

 * at info AT gvsig.com, or visit our website www.gvsig.com.

 */

package org.gvsig.symbology.fmap.mapcontext.rendering.symbol.fill.impl;

import java.awt.Color;

import java.awt.Dimension;

import java.awt.Graphics2D;

import java.awt.Paint;

import java.awt.Rectangle;

import java.awt.RenderingHints;

import java.awt.Shape;

import java.awt.TexturePaint;

import java.awt.geom.AffineTransform;

import java.awt.image.BufferedImage;

import java.io.IOException;

import java.net.URL;

import org.gvsig.fmap.dal.feature.Feature;

import org.gvsig.fmap.geom.Geometry;

import org.gvsig.fmap.mapcontext.MapContextLocator;

import org.gvsig.fmap.mapcontext.ViewPort;

import org.gvsig.fmap.mapcontext.rendering.symbols.CartographicSupport;

import org.gvsig.fmap.mapcontext.rendering.symbols.ISymbol;

import org.gvsig.fmap.mapcontext.rendering.symbols.ISymbol_v2;

import org.gvsig.fmap.mapcontext.rendering.symbols.SymbolDrawingException;

import org.gvsig.fmap.mapcontext.rendering.symbols.SymbolManager;

import org.gvsig.fmap.mapcontext.rendering.symbols.styles.IBackgroundFileStyle;

import org.gvsig.i18n.Messages;

import org.gvsig.symbology.fmap.mapcontext.rendering.symbol.fill.IPictureFillSymbol;

import org.gvsig.symbology.fmap.mapcontext.rendering.symbol.style.BackgroundFileStyle;

import org.gvsig.symbology.fmap.mapcontext.rendering.symbol.style.IMarkerFillPropertiesStyle;

import org.gvsig.symbology.fmap.mapcontext.rendering.symbol.style.SimpleMarkerFillPropertiesStyle;

import org.gvsig.tools.ToolsLocator;

import org.gvsig.tools.dynobject.DynStruct;

import org.gvsig.tools.persistence.PersistenceManager;

import org.gvsig.tools.persistence.PersistentState;

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

import org.gvsig.tools.task.Cancellable;

import org.gvsig.tools.util.Callable;

import org.slf4j.Logger;

import org.slf4j.LoggerFactory;

/**

 * PictureFillSymbol allows to use an image file suported by gvSIG as a padding

 * for the polygons.This image can be modified using methods to scale or rotate it.

 * @author jaume dominguez faus - jaume.dominguez@iver.es

 */

public class PictureFillSymbol extends AbstractFillSymbol implements IPictureFillSymbol {

        private static final Logger logger = LoggerFactory.getLogger(PictureFillSymbol.class);

    public static final String PICTURE_FILL_SYMBOL_PERSISTENCE_DEFINITION_NAME =

        "PictureFillSymbol";

    private static final String SELECTED = "selected";

    private static final String SELECTION_SYMBOL = "selectionSym";

    private static final String BACKGROUND_IMAGE = "bgImage";

    private static final String BACKGROUND_SELECTION_IMAGE = "bgSelImage";

    private static final String ANGLE = "angle";

    private static final String X_SCALE = "xScale";

    private static final String Y_SCALE = "yScale";

    private static final String MARKER_FILL_PROPERTIES = "markerFillProperties";

        private double angle = 0;

        private double xScale = 1;

        private double yScale = 1;

        transient private PictureFillSymbol selectionSym;

        private boolean selected;

        private IMarkerFillPropertiesStyle markerFillProperties = new SimpleMarkerFillPropertiesStyle();

        private BackgroundFileStyle bgImage;

        private BackgroundFileStyle bgSelImage;

    @Override

    public void draw(Graphics2D g, AffineTransform affineTransform, Geometry geom, Feature f, Cancellable cancel, Rectangle r) {

                 Color fillColor = getFillColor();

                if(r != null){

                    geom = getSampleGeometry(r);

                }

                 Shape transf_geom = geom.getShape(affineTransform);

                if (fillColor != null) {

                        g.setColor(fillColor);

                        g.fill(transf_geom);

                }

                g.setClip(transf_geom);

                BackgroundFileStyle bg = (!selected) ? bgImage : bgSelImage ;

                if (bg != null && bg.getBounds() != null){

                        int sizeW=(int) ((int)bg.getBounds().getWidth() * xScale);

                        int sizeH=(int) ((int)bg.getBounds().getHeight() * yScale);

                        Rectangle rProv = new Rectangle();

                        rProv.setFrame(0,0,sizeW,sizeH);

                        Paint resulPatternFill;

                        BufferedImage sample;

                        sample= new BufferedImage(sizeW,sizeH,BufferedImage.TYPE_INT_ARGB);

                        Graphics2D gAux = sample.createGraphics();

                        double xSeparation = markerFillProperties.getXSeparation(); // TODO apply CartographicSupport

                        double ySeparation = markerFillProperties.getYSeparation(); // TODO apply CartographicSupport

                        double xOffset = markerFillProperties.getXOffset();

                        double yOffset = markerFillProperties.getYOffset();

                        try {

                                bg.drawInsideRectangle(gAux, rProv);

                        } catch (SymbolDrawingException e) {

                                logger.warn(Messages.getText("label_style_could_not_be_painted"), e);

                        }

                        Dimension sz = rProv.getSize();

                        sz = new Dimension((int) Math.round(sz.getWidth()+(xSeparation)),

                                        (int) Math.round(sz.getHeight() + (ySeparation)));

                        rProv.setSize(sz);

                        BufferedImage bi = new BufferedImage(rProv.width, rProv.height, BufferedImage.TYPE_INT_ARGB);

                        gAux = bi.createGraphics();

                        gAux.drawImage(sample, null, (int) (xSeparation*0.5), (int) (ySeparation*0.5));

                        rProv.x = rProv.x+(int)xOffset;

                        rProv.y = rProv.y+(int)yOffset;

                        resulPatternFill = new TexturePaint(bi,rProv);

                        g.setColor(null);

                        g.setRenderingHint(RenderingHints.KEY_ANTIALIASING,

                                        RenderingHints.VALUE_ANTIALIAS_ON);

                        g.setPaint(resulPatternFill);

                }

                if (angle == 0) {

                    g.fill(transf_geom);

                } else {

            AffineTransform at = new AffineTransform();

            at.rotate(angle);

                    Geometry pixels_geom = geom.cloneGeometry();

                    pixels_geom.transform(affineTransform);

                    pixels_geom.transform(at);

                    g.rotate(-angle);

                    g.fill(pixels_geom.getShape());

                    g.rotate(angle);

                }

                g.setClip(null);

                if (getOutline()!=null) {

                    getOutline().setCartographicContext(this.getCartographicContext());

                    if(getOutline() instanceof ISymbol_v2){

                        ((ISymbol_v2)getOutline()).draw(g, affineTransform, geom, null, cancel, null);

                    } else {

                        getOutline().draw(g, affineTransform, geom, null, cancel);

                    }

                }

        }

        /**

         * Constructor method

         *

         */

        public PictureFillSymbol() {

                super();

        }

        /**

         * Constructor method

         * @param imageURL, URL of the normal image

         * @param selImageURL, URL of the image when it is selected in the map

         * @throws IOException

         */

        public PictureFillSymbol(URL imageURL, URL selImageURL) throws IOException {

                setImage(imageURL);

                if (selImageURL!=null)

                        setSelImage(selImageURL);

                else setSelImage(imageURL);

        }

        /**

         * Sets the URL for the image to be used as a picture fill symbol (when it is selected in the map)

         * @param imageFile, File

         * @throws IOException

         */

        @Override

        public final void setSelImage(URL selImageUrl) throws IOException{

                bgSelImage= BackgroundFileStyle.createStyleByURL(selImageUrl);

        }

        /**

         * Defines the URL from where the picture to fill the polygon is taken.

         * @param imageFile

         * @throws IOException

         */

        @Override

        public final void setImage(URL imageUrl) throws IOException{

                bgImage = BackgroundFileStyle.createStyleByURL(imageUrl);

        }

        @Override

        public ISymbol getSymbolForSelection(Color selectionColor) {

                if (selectionSym == null) {

                        selectionSym = (PictureFillSymbol) cloneForSelection(selectionColor);

                        selectionSym.selected=true;

                        selectionSym.selectionSym = selectionSym; // avoid too much lazy creations

                }else {

                    selectionSym.setFillColor(selectionColor);

                }

                if (selectionSym instanceof CartographicSupport) {

                    ((CartographicSupport) selectionSym).setUnit(this.getUnit());

                }

                return selectionSym;

        }

        @Override

        public int getSymbolType() {

                return Geometry.TYPES.SURFACE;

        }

        public String getClassName() {

                return getClass().getName();

        }

        /**

         * Returns the IMarkerFillProperties that allows this class to treat the picture as

         * a marker in order to scale it, rotate it and so on.

         * @return markerFillProperties,IMarkerFillPropertiesStyle

         */

        @Override

        public IMarkerFillPropertiesStyle getMarkerFillProperties() {

                return markerFillProperties;

        }

        /**

         * Sets the MarkerFillProperties in order to allow the user to modify the picture as

         * a marker (it is possible to scale it, rotate it and so on)

         * @param prop

         */

        @Override

        public void setMarkerFillProperties(IMarkerFillPropertiesStyle prop) {

                this.markerFillProperties = prop;

        }

        /**

         * Defines the angle for the rotation of the image when it is added to create the

         * padding

         *

         * @return angle

         */

        @Override

        public double getAngle() {

                return angle;

        }

        /**

         * Sets the angle for the rotation of the image when it is added to create the padding

         * @param angle

         */

        @Override

        public void setAngle(double angle) {

                this.angle = angle;

        }

        /**

         * Defines the scale for the x axis of the image when it is added to create the

         * padding

         * @return xScale

         */

        @Override

        public double getXScale() {

                return xScale;

        }

        /**

         * Returns the scale for the x axis of the image when it is added to create the

         * padding

         * @param xScale

         */

        @Override

        public void setXScale(double xScale) {

                this.xScale = xScale;

        }

        /**

         * Defines the scale for the y axis of the image when it is added to create the

         * padding

         * @return yScale

         */

        @Override

        public double getYScale() {

                return yScale;

        }

        /**

         * Returns the scale for the y axis of the image when it is added to create the

         * padding

         * @param yScale

         */

        @Override

        public void setYScale(double yScale) {

                this.yScale = yScale;

        }

        /**

         * Returns the URL of the image that is used to create the padding to fill the

         * polygon

         * @return imagePath

         */

        @Override

        public URL getSource() {

                if (bgImage != null){

                        return bgImage.getSource();

                }

                return null;

        }

        /**

         * Returns the URL of the image used when the polygon is selected

         * @return

         */

        @Override

        public URL getSelectedSource(){

                if( bgSelImage != null){

                        return bgSelImage.getSource();

                }

                return null;

        }

        @Override

        public double toCartographicSize(ViewPort viewPort, double dpi, Geometry geom) {

                return super.toCartographicSize(viewPort, dpi, geom);

                // this symbol cannot apply any cartographic transfomation to its filling

        }

    @Override

    public Object clone() throws CloneNotSupportedException {

            PictureFillSymbol copy = (PictureFillSymbol) super.clone();

        // clone selection

            if (selectionSym != null) {

                    //Parche por lo que hace el m?todo getSymbolForSelection

                    if (this == selectionSym){

                            copy.selectionSym = copy;

                    } else {

                            copy.selectionSym = (PictureFillSymbol) selectionSym.clone();

                    }

            }

        // clone brackground image

        if (bgImage != null) {

            copy.bgImage = (BackgroundFileStyle) bgImage.clone();

        }

        // clone selection brackground image

        if (bgSelImage != null) {

            copy.bgSelImage = (BackgroundFileStyle) bgSelImage.clone();

        }

        // FIXME: clone properties

        return copy;

    }

    @Override

    public void loadFromState(PersistentState state) throws PersistenceException {

        // Set parent style properties

        super.loadFromState(state);

        this.selected = (Boolean) state.get(SELECTED);

        this.selectionSym = (PictureFillSymbol) state.get(SELECTION_SYMBOL);

        this.bgImage = (BackgroundFileStyle) state.get(BACKGROUND_IMAGE);

        this.bgSelImage =

            (BackgroundFileStyle) state.get(BACKGROUND_SELECTION_IMAGE);

        this.angle = (Double) state.get(ANGLE);

        this.xScale = (Double) state.get(X_SCALE);

        this.yScale = (Double) state.get(Y_SCALE);

        this.markerFillProperties = (IMarkerFillPropertiesStyle) state.get(MARKER_FILL_PROPERTIES);

    }

    @Override

    public void saveToState(PersistentState state) throws PersistenceException {

        // Save parent fill symbol properties

        super.saveToState(state);

        // Save own properties

        state.set(SELECTED, this.selected);

        state.set(SELECTION_SYMBOL, this.getSymbolForSelection());

        state.set(BACKGROUND_IMAGE, this.bgImage);

        state.set(BACKGROUND_SELECTION_IMAGE, this.bgSelImage);

        state.set(ANGLE, this.angle);

        state.set(X_SCALE, this.xScale);

        state.set(Y_SCALE, this.yScale);

        state.set(MARKER_FILL_PROPERTIES, this.markerFillProperties);

    }

    public static class RegisterPersistence implements Callable {

        @Override

        public Object call() throws Exception {

            PersistenceManager manager = ToolsLocator.getPersistenceManager();

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

                DynStruct definition =

                    manager.addDefinition(PictureFillSymbol.class,

                                    PICTURE_FILL_SYMBOL_PERSISTENCE_DEFINITION_NAME,

                                    PICTURE_FILL_SYMBOL_PERSISTENCE_DEFINITION_NAME

                            + " Persistence definition",

                        null,

                        null);

                // Extend the Style base definition

                definition.extend(manager.getDefinition(FILL_SYMBOL_PERSISTENCE_DEFINITION_NAME));

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

                definition.addDynFieldObject(SELECTION_SYMBOL)

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

                definition.addDynFieldObject(BACKGROUND_IMAGE)

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

                definition.addDynFieldObject(BACKGROUND_SELECTION_IMAGE)

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

                definition.addDynFieldDouble(ANGLE).setMandatory(true);

                definition.addDynFieldDouble(X_SCALE).setMandatory(true);

                definition.addDynFieldDouble(Y_SCALE).setMandatory(true);

                definition.addDynFieldObject(MARKER_FILL_PROPERTIES)

                .setClassOfValue(IMarkerFillPropertiesStyle.class).setMandatory(true);

            }

            return Boolean.TRUE;

        }

    }

        public static class RegisterSymbol implements Callable {

                @Override

                public Object call() throws Exception {

                SymbolManager manager = MapContextLocator.getSymbolManager();

                manager.registerSymbol(PICTURE_FILL_SYMBOL_PERSISTENCE_DEFINITION_NAME,

                    PictureFillSymbol.class);

                        return Boolean.TRUE;

                }

        }

        @Override

        public IBackgroundFileStyle getBackgroundFileStyle() {

                return this.bgImage;

        }

        @Override

        public IBackgroundFileStyle getSelectedBackgroundFileStyle() {

                return this.bgSelImage;

        }

}