Application: gvSIG desktop

/* gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana

 *

 * Copyright (C) 2004 IVER T.I. and Generalitat Valenciana.

 *

 * This program is free software; you can redistribute it and/or

 * modify it under the terms of the GNU General Public License

 * as published by the Free Software Foundation; either version 2

 * of the License, or (at your option) any later version.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program; if not, write to the Free Software

 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307,USA.

 */

package org.gvsig.rastertools.clipping.ui.listener;

import java.awt.geom.AffineTransform;

import java.awt.geom.NoninvertibleTransformException;

import java.awt.geom.Point2D;

import org.gvsig.fmap.raster.layers.FLyrRasterSE;

import org.gvsig.fmap.raster.tools.SaveRasterListenerImpl;

import org.gvsig.gui.beans.buttonspanel.ButtonsPanel;

import org.gvsig.raster.util.RasterToolsUtil;

import org.gvsig.raster.util.RasterUtilities;

import org.gvsig.rastertools.clipping.ClippingData;

import org.gvsig.rastertools.clipping.ui.ClippingPanel;

import com.iver.cit.gvsig.fmap.MapControl;

import com.iver.cit.gvsig.fmap.tools.Events.RectangleEvent;

/**

 * <code>ClippingMouseViewListener</code> es un listener del recorte de raster.

 * Al seleccionar un ?rea sobre la vista debe cargar el cuadro con los datos de

 * coordenadas pixel, coordenadas reales, ancho y alto del raster resultante,

 * tama?o de celda.

 *

 * @version 19/04/2007

 * @author BorSanZa - Borja S?nchez Zamorano (borja.sanchez@iver.es)

 */

public class ClippingMouseViewListener extends SaveRasterListenerImpl {

        private FLyrRasterSE    layer          = null;

        private ClippingPanel   clippingPanel  = null;

        private ClippingData    data           = null;

        private MapControl      mapControl     = null;

        private String          currentTool    = null;

        /**

         * Crea un nuevo <code>ClippingMouseViewListener</code>

         *

         * @param mapCtrl

         * @param cutRasterDialog

         */

        public ClippingMouseViewListener(MapControl mapControl, ClippingPanel clippingPanel, ClippingData data, FLyrRasterSE lyr) {

                super(mapControl);

                this.clippingPanel = clippingPanel;

                this.data = data;

                this.layer = lyr;

                this.mapControl = mapControl;

                this.currentTool = mapControl.getCurrentTool();

        }

        /**

         * Asigna la capa raster.

         * @param flyr Capa raster

         */

        public void setRasterLayer(FLyrRasterSE flyr) {

                layer = flyr;

        }

        /**

         * Realiza las acciones de selecci?n del ?rea de recorte por medio de un rectangulo

         * sobre la vista.

         */

        public void rectangle(RectangleEvent event) {

                super.rectangle(event);

                clippingPanel.getButtonsPanel().getButton(ButtonsPanel.BUTTON_APPLY).setEnabled(false);

                clippingPanel.getButtonsPanel().getButton(ButtonsPanel.BUTTON_ACCEPT).setEnabled(false);

                if(((FLyrRasterSE) layer).getAffineTransform() == null)

                        return;

                AffineTransform at = ((FLyrRasterSE) layer).getAffineTransform();

                //Temporalmente cargamos las coordenadas reales para luego transformarlas a pixel

                Point2D ulWc = new Point2D.Double(rect.getMinX(), rect.getMaxY());

                Point2D lrWc = new Point2D.Double(rect.getMaxX(), rect.getMinY());

                Point2D urWc = new Point2D.Double(rect.getMaxX(), rect.getMaxY());

                Point2D llWc = new Point2D.Double(rect.getMinX(), rect.getMinY());

                Point2D ulPx = new Point2D.Double();

                Point2D lrPx = new Point2D.Double();

                Point2D urPx = new Point2D.Double();

                Point2D llPx = new Point2D.Double();

                try {

                        at.inverseTransform(ulWc, ulPx);

                        at.inverseTransform(lrWc, lrPx);

                        at.inverseTransform(urWc, urPx);

                        at.inverseTransform(llWc, llPx);

                } catch (NoninvertibleTransformException e) {

                        RasterToolsUtil.messageBoxError(RasterToolsUtil.getText(this, "coordenadas_erroneas"), null);

                        return;

                }

                Point2D[] pointList = new Point2D[]{ulPx, lrPx, urPx, llPx};

                Point2D dim = new Point2D.Double(layer.getPxWidth(), layer.getPxHeight());

                //Comprobamos si la selecci?n est? completamente fuera del ?rea

                if(isOutside(ulPx, lrPx)) {

                        data.setOutOfArea();

                        return;

                }

                //Ajustamos los puntos al ?rea en pixeles del raster

                RasterUtilities.adjustToPixelSize(pointList, dim);

                //Convertimos nuevamente a coordenadas reales despu?s de ajustar

                at.transform(ulPx, ulWc);

                at.transform(lrPx, lrWc);

                at.transform(llPx, llWc);

                at.transform(urPx, urWc);

                data.setCoorPixel(ulPx, lrPx, llPx, urPx);

                data.setCoorReal(ulWc, lrWc, llWc, urWc);

                data.setAffineTransform(at);

                data.initSize();

                clippingPanel.saveStatus(data);

                clippingPanel.getButtonsPanel().getButton(ButtonsPanel.BUTTON_APPLY).setEnabled(true);

                clippingPanel.getButtonsPanel().getButton(ButtonsPanel.BUTTON_ACCEPT).setEnabled(true);

                if (currentTool != null)

                        mapControl.setTool(currentTool);

        }

        /**

         * Comprueba si la selecci?n del punto est? fuera del ?rea del raster.

         * @param ulPx Coordenada superior izquierda en pixeles

         * @param lrPx Corrdenada inferior derecha en pixeles

         * @return true si la selecci?n del punto est? fuera del raster y false si no lo est?

         */

        private boolean isOutside(Point2D ulPx, Point2D lrPx) {

                double minX = Math.min(ulPx.getX(), lrPx.getX());

                double minY = Math.min(ulPx.getY(), lrPx.getY());

                double maxX = Math.max(ulPx.getX(), lrPx.getX());

                double maxY = Math.max(ulPx.getY(), lrPx.getY());

                if(minX >= layer.getPxWidth() || minY >= layer.getPxHeight() || maxX < 0 || maxY < 0)

                        return true;

                return false;

        }

}