Application: gvSIG desktop » gvSIG raster

/* 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.raster.fmap.tool.behavior;

import java.awt.BasicStroke;

import java.awt.Color;

import java.awt.Image;

import java.awt.Point;

import java.awt.Rectangle;

import java.awt.RenderingHints;

import java.awt.event.MouseEvent;

import java.awt.geom.AffineTransform;

import java.awt.geom.NoninvertibleTransformException;

import java.awt.geom.Point2D;

import java.awt.geom.Rectangle2D;

import java.awt.image.BufferedImage;

import org.gvsig.fmap.IconThemeHelper;

import org.gvsig.fmap.geom.GeometryLocator;

import org.gvsig.fmap.geom.GeometryManager;

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

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

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

import org.gvsig.fmap.mapcontext.ViewPort;

import org.gvsig.fmap.mapcontrol.MapControlDrawer;

import org.gvsig.fmap.mapcontrol.tools.BehaviorException;

import org.gvsig.fmap.mapcontrol.tools.Behavior.Behavior;

import org.gvsig.fmap.mapcontrol.tools.Events.EnvelopeEvent;

import org.gvsig.fmap.mapcontrol.tools.Listeners.RectangleListener;

import org.gvsig.fmap.mapcontrol.tools.Listeners.ToolListener;

import org.slf4j.Logger;

import org.slf4j.LoggerFactory;

/**

 * Comportamiento de una selecci?n por rectangulo con una transformaci?n

 * aplicada. El resultado visual es la selecci?n como un rectangulo com?n con

 * el rectangulo transformado superpuesto.

 *

 * @author Nacho Brodin (nachobrodin@gmail.com)

 *

 */

@SuppressWarnings("deprecation")

public class TransformedRectangleBehavior extends Behavior {

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

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

        /**

         * First point of the rectangle area, that represents a corner.

         */

        private Point2D                                     m_FirstPoint     = null;

        /**

         * Second point of the rectangle area, that represents the opposite corner of the first,

         *  along the diagonal.

         */

        private Point2D                                      m_LastPoint     = null;

        /**

         * Tool listener used to work with the <code>MapControl</code> object.

         *

         * @see #getListener()

         * @see #setListener(ToolListener)

         */

        private RectangleListener                           listener        = null;

        private AffineTransform                              at              = null;

        private BasicStroke                                  stroke          = new BasicStroke(1.0f, BasicStroke.CAP_BUTT, BasicStroke.JOIN_MITER, 10.0f, new float[]{5.0f}, 0.0f);

        /**

         * <p>Creates a new behavior for selecting rectangle areas.</p>

         *

         * @param zili listener used to permit this object to work with the associated <code>MapControl</code>

         */

        public TransformedRectangleBehavior(RectangleListener zili) {

                listener = zili;

        }

        /**

         * Asigna la matriz de transformaci?n para el cuadro externo.

         * @param at AffineTransform

         */

        public void setAffineTransform(AffineTransform at) {

                this.at = at;

        }

        /* (non-Javadoc)

         * @see com.iver.cit.gvsig.fmap.tools.Behavior.IBehavior#getImageCursor()

         */

        public Image getImageCursor(){

                return IconThemeHelper.getImage("rectangle-select-cursor");

        }

        /*

         * (non-Javadoc)

         * @see com.iver.cit.gvsig.fmap.tools.Behavior.Behavior#paintComponent(java.awt.Graphics)

         */

        public void paintComponent(MapControlDrawer mapControlDrawer) {

                BufferedImage img = getMapControl().getImage();

                RenderingHints hints = new RenderingHints(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);

                hints.add(new RenderingHints(RenderingHints.KEY_RENDERING, RenderingHints.VALUE_RENDER_QUALITY));

                mapControlDrawer.setRenderingHints(hints);

                mapControlDrawer.drawImage(img, 0, 0);

                mapControlDrawer.setColor(Color.black);

                //g.setXORMode(Color.white);

                // Borramos el anterior

                Rectangle r = new Rectangle();

                // Dibujamos el actual

                if ((m_FirstPoint != null) && (m_LastPoint != null)) {

                        r.setFrameFromDiagonal(m_FirstPoint, m_LastPoint);

                        mapControlDrawer.drawRect(r.x, r.y, r.width, r.height);

                }

                //Dibujamos el cuadro exterior

                if(at != null) {

                        Point2D.Double ul = new Point2D.Double(r.x, r.y);

                        Point2D.Double ur = new Point2D.Double(r.x + r.width, r.y);

                        Point2D.Double ll = new Point2D.Double(r.x, r.y + r.height);

                        Point2D.Double lr = new Point2D.Double(r.x + r.width, r.y + r.height);

                        Point2D center = new Point2D.Double((r.width) / 2.0, (r.height) / 2.0);

                        AffineTransform T1 = new AffineTransform(1D, 0, 0, 1, -center.getX(), -center.getY());

                        AffineTransform R1 = new AffineTransform(1D, at.getShearY() / at.getScaleY(), at.getShearX() / at.getScaleX(), 1, 0, 0);

                        AffineTransform T2 = new AffineTransform(1D, 0, 0, 1, center.getX(), center.getY());

                        T2.concatenate(R1);

                        T2.concatenate(T1);

                        try {

                                T2.inverseTransform(ul, ul);

                                T2.inverseTransform(ll, ll);

                                T2.inverseTransform(ur, ur);

                                T2.inverseTransform(lr, lr);

                                Point2D.Double ptMin = new Point2D.Double(        Math.min(Math.min(ul.getX(), ur.getX()), Math.min(ll.getX(), lr.getX())),

                                                                                                                        Math.min(Math.min(ul.getY(), ur.getY()), Math.min(ll.getY(), lr.getY())));

                                Point2D.Double ptMax = new Point2D.Double(        Math.max(Math.max(ul.getX(), ur.getX()), Math.max(ll.getX(), lr.getX())),

                                                                                                                        Math.max(Math.max(ul.getY(), ur.getY()), Math.max(ll.getY(), lr.getY())));

                                double w = ptMax.getX() - ptMin.getX();

                                double h = ptMax.getY() - ptMin.getY();

                                mapControlDrawer.setStroke(stroke);

                                mapControlDrawer.transform(T2);

                                mapControlDrawer.drawRect((int)ptMin.getX(), (int)ptMin.getY(), (int)w, (int)h);

                                mapControlDrawer.transform(at.createInverse());

                        } catch (NoninvertibleTransformException e) {

                                return;

                        }

                }

                //g.setPaintMode();

        }

        /*

         * (non-Javadoc)

         * @see com.iver.cit.gvsig.fmap.tools.Behavior.Behavior#mousePressed(java.awt.event.MouseEvent)

         */

        public void mousePressed(MouseEvent e) {

                if (e.getButton() == MouseEvent.BUTTON1) {

                        m_FirstPoint = e.getPoint();

                        getMapControl().repaint();

                }

                if (listener.cancelDrawing()) {

                        getMapControl().cancelDrawing();

                        getMapControl().repaint();

                }

        }

        /*

         * (non-Javadoc)

         * @see com.iver.cit.gvsig.fmap.tools.Behavior.Behavior#mouseReleased(java.awt.event.MouseEvent)

         */

        public void mouseReleased(MouseEvent e) throws BehaviorException {

            if (m_FirstPoint == null) return;

                Point2D p1;

                Point2D p2;

                Point pScreen = e.getPoint();

                ViewPort vp = getMapControl().getMapContext().getViewPort();

                p1 = vp.toMapPoint(m_FirstPoint);

                p2 = vp.toMapPoint(pScreen);

                if (e.getButton() == MouseEvent.BUTTON1) {

                        //        Fijamos el nuevo extent

                        double minX = Math.min(p1.getX(), p2.getX());

                        double minY = Math.min(p1.getY(), p2.getY());

                        double maxX = Math.max(p1.getX(), p2.getX());

                        double maxY = Math.max(p1.getY(), p2.getY());

                        Envelope env = null;

                        try {

                                env = geomManager.createEnvelope(minX, minY, maxX, maxY, SUBTYPES.GEOM2D);

                        } catch (CreateEnvelopeException e1) {

                                logger.error("Error creating the envelope", e);

                        }

                        Rectangle2D rectPixel = new Rectangle();

                        rectPixel.setFrameFromDiagonal(m_FirstPoint, pScreen);

                        EnvelopeEvent event = new EnvelopeEvent(env, e, rectPixel);

                        listener.rectangle(event);

                }

                m_FirstPoint = null;

                m_LastPoint = null;

        }

        /*

         * (non-Javadoc)

         * @see com.iver.cit.gvsig.fmap.tools.Behavior.Behavior#mouseDragged(java.awt.event.MouseEvent)

         */

        public void mouseDragged(MouseEvent e) {

                m_LastPoint = e.getPoint();

                getMapControl().repaint();

        }

        /**

         * <p>Sets a tool listener to work with the <code>MapControl</code> using this behavior.</p>

         *

         * @param listener a <code>RectangleListener</code> object for this behavior

         */

        public void setListener(ToolListener listener) {

                this.listener = (RectangleListener) listener;

        }

        /*

         * (non-Javadoc)

         * @see com.iver.cit.gvsig.fmap.tools.Behavior.Behavior#getListener()

         */

        public ToolListener getListener() {

                return listener;

        }

}