| gvSIG desktop 1

/* 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.symbology.fmap.mapcontext.rendering.symbol.warning.impl;

import java.awt.BasicStroke;

import java.awt.Color;

import java.awt.Font;

import java.awt.Graphics2D;

import java.awt.Rectangle;

import java.awt.geom.AffineTransform;

import java.awt.geom.Ellipse2D;

import org.gvsig.compat.CompatLocator;

import org.gvsig.compat.print.PrintAttributes;

import org.gvsig.fmap.geom.Geometry;

import org.gvsig.fmap.mapcontext.MapContextLocator;

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

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

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

import org.gvsig.symbology.fmap.mapcontext.rendering.symbol.impl.MultiShapeSymbol;

import org.gvsig.symbology.fmap.mapcontext.rendering.symbol.text.impl.SimpleTextSymbol;

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;

/**

 * Warning symbol

 * 

 * @author 2005-2008 jaume dominguez faus - jaume.dominguez@iver.es

 * @author 2009- <a href="cordinyana@gvsig.org">C?sar Ordi?ana</a> - gvSIG team

 */

public class WarningSymbol extends MultiShapeSymbol implements IWarningSymbol {

        public static final String WARNING_SYMBOL_PERSISTENCE_DEFINITION_NAME = "WarningSymbol";

        private static final String FIELD_DESCRIPTION = "description";

        private static final String FIELD_MESSAGE = "message";

        private static final String FIELD_EXCEPTION_TYPE = "exceptionType";

        private String message;

        private int exceptionType;

        private SimpleTextSymbol text;

        /**

         * Empty constructor, only used in persistence.

         */

        public WarningSymbol() {

                super();

        }

        public WarningSymbol(String message, String symbolDesc,

                        int symbolDrawExceptionType) {

                super();

                this.message = message;

                this.exceptionType = symbolDrawExceptionType;

                setDescription(symbolDesc);

        }

        public void draw(Graphics2D g, AffineTransform affineTransform,

                        Geometry geom, Cancellable cancel) {

                try {

                        drawInsideRectangle(g, g.getTransform(), geom.getBounds(), null);

                } catch (SymbolDrawingException e) {

                        // IMPOSSIBLE

                }

        }

        public void setDrawExceptionType(int symbolDrawExceptionType) {

                this.exceptionType = symbolDrawExceptionType;

        }

        public void setMessage(String message) {

                this.message = message;

        }

        private String getMessage() {

                return message;

        }

        public void drawInsideRectangle(Graphics2D g,

                        AffineTransform scaleInstance, Rectangle r,

                        PrintAttributes properties) throws SymbolDrawingException {

                g.setClip(r);

                if (message == null) {

                        message = "Symbol undrawable.\nPlease, check errors.";

                }

                String[] messageLines = CompatLocator.getStringUtils().split(message,

                                "\n");

                int strokeWidth = (int) (Math.min(r.width, r.height) * .1);

                if (strokeWidth == 0) {

                        strokeWidth = 1;

                }

                g.setColor(Color.red);

                g.setStroke(new BasicStroke(strokeWidth, BasicStroke.CAP_BUTT,

                                BasicStroke.JOIN_ROUND));

                int width = r.width - (strokeWidth + strokeWidth);

                int height = r.height - (strokeWidth + strokeWidth);

                double radius = Math.min(width, height) * .5;

                double centerX = r.getCenterX();

                double centerY = r.getCenterY();

                Ellipse2D circle = new Ellipse2D.Double(centerX - radius, centerY

                                - radius, 2 * radius, 2 * radius);

                g.draw(circle);

                g.setClip(circle);

                double aux = Math.cos(Math.PI * 0.25) * radius;

                g.drawLine((int) (centerX - aux), (int) (centerY - aux),

                                (int) (centerX + aux), (int) (centerY + aux));

                int fontSize = 20;

                g.setFont(new Font("Arial", fontSize, Font.PLAIN));

                g.setColor(Color.black);

                g.setClip(null);

                if (text == null) {

                        text = new SimpleTextSymbol();

                        text.setAutoresizeEnabled(true);

                }

                double lineHeight = (r.getHeight() - 6) / messageLines.length;

                Rectangle textRect = new Rectangle((int) r.getMinX(),

                                (int) r.getMinY() + 6, (int) r.getWidth(), (int) lineHeight);

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

                        text.setText(messageLines[i]);

                        text.drawInsideRectangle(g, null, textRect, null);

                        textRect.setLocation((int) r.getX(), (int) (r.getY() + r

                                        .getHeight()));

                }

        }

        public Object clone() throws CloneNotSupportedException {

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

                if (text != null) {

                        copy.text = (SimpleTextSymbol) text.clone();

                }

                return copy;

        }

        /**

         * @return the exceptionType

         */

        private int getExceptionType() {

                return exceptionType;

        }

        /**

         * @param exceptionType

         *            the exceptionType to set

         */

        private void setExceptionType(int exceptionType) {

                this.exceptionType = exceptionType;

        }

        public void loadFromState(PersistentState state)

                        throws PersistenceException {

                setDescription(state.getString(FIELD_DESCRIPTION));

                setExceptionType(state.getInt(FIELD_EXCEPTION_TYPE));

                setMessage(state.getString(FIELD_MESSAGE));

        }

        public void saveToState(PersistentState state) throws PersistenceException {

                state.set(FIELD_DESCRIPTION, getDescription());

                state.set(FIELD_EXCEPTION_TYPE, getExceptionType());

                state.set(FIELD_MESSAGE, getMessage());

        }

        public static class RegisterPersistence implements Callable {

                public Object call() throws Exception {

                        PersistenceManager manager = ToolsLocator.getPersistenceManager();

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

                                DynStruct definition = manager.addDefinition(

                                                WarningSymbol.class,

                                                WARNING_SYMBOL_PERSISTENCE_DEFINITION_NAME,

                                                WARNING_SYMBOL_PERSISTENCE_DEFINITION_NAME+" Persistence definition",

                                                null, 

                                                null

                                );

                                // Description

                                definition.addDynFieldString(FIELD_DESCRIPTION).setMandatory(true);

                                // Exception type

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

                                // Message

                                definition.addDynFieldString(FIELD_MESSAGE).setMandatory(true);

                        }

                        return Boolean.TRUE;

                }

        }

        public static class RegisterSymbol implements Callable {

                public Object call() throws Exception {

                SymbolManager manager = MapContextLocator.getSymbolManager();

                manager.registerSymbol(IWarningSymbol.SYMBOL_NAME,

                        WarningSymbol.class);

                        return Boolean.TRUE;

                }

        }

}