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/* 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.cutting.ui.listener;

import java.awt.Component;

import java.awt.geom.AffineTransform;

import java.awt.geom.NoninvertibleTransformException;

import java.awt.geom.Point2D;

import javax.swing.JOptionPane;

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

import org.gvsig.raster.util.RasterUtilities;

import org.gvsig.rastertools.cutting.ui.CuttingPanel;

import com.iver.andami.PluginServices;

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

import com.iver.cit.gvsig.fmap.tools.SaveRasterListenerImpl;

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

/**

 * <code>CuttingMouseViewListener</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 CuttingMouseViewListener extends SaveRasterListenerImpl {

        private FLyrRasterSE layer = null;

        private CuttingPanel cuttingPanel;

        private MapControl mapControl = null;

        private String currentTool = null;

        /**

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

         *

         * @param mapCtrl

         * @param cutRasterDialog

         */

        public CuttingMouseViewListener(MapControl mapControl, CuttingPanel cuttingPanel) {

                super(mapControl);

                this.cuttingPanel = cuttingPanel;

                this.layer = (FLyrRasterSE) cuttingPanel.getFLayer();

                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);

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

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

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

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

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

                try {

                        at.inverseTransform(ulPx, ulPx);

                        at.inverseTransform(lrPx, lrPx);

                        at.inverseTransform(urPx, urPx);

                        at.inverseTransform(llPx, llPx);

                } catch (NoninvertibleTransformException e) {

                        JOptionPane.showMessageDialog((Component) PluginServices.getMainFrame(), PluginServices.getText(this, "coordenadas_erroneas"));

                        return;

                }

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

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

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

                if(isOutside(ulPx, lrPx)) {

                        cuttingPanel.setCoorPixelFromDouble(0, 0, 0, 0, 0);

                        cuttingPanel.setWidthText(0, 0);

                        cuttingPanel.setHeightText(0, 0);

                        cuttingPanel.setCellSizeText(0, 0);

                        cuttingPanel.setRelWidthHeight(0);

                        cuttingPanel.setCoorRealFromDouble(0, 0, 0, 0, 0);

                        return;

                }

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

                RasterUtilities.adjustToPixelSize(pointList, dim);

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

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

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

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

                //Convertimos nuevamente a coordenadas reales

                Point2D ulWc = new Point2D.Double();

                Point2D lrWc = new Point2D.Double();

                at.transform(new Point2D.Double(minX, minY), ulWc);

                at.transform(new Point2D.Double(maxX + 1, maxY + 1), lrWc);

                cuttingPanel.setCoorRealFromDouble(ulWc.getX(), ulWc.getY(), lrWc.getX(), lrWc.getY(), 3);

                cuttingPanel.setCoorPixelFromDouble(minX, minY, maxX, maxY, 3);

                cuttingPanel.setWidthText(dim.getX(), 0);

                cuttingPanel.setHeightText(dim.getY(), 0);

                cuttingPanel.setCellSizeText(((maxX - minX) / dim.getX()), 4);

                cuttingPanel.setRelWidthHeight((double) (dim.getX() / dim.getY()));

                cuttingPanel.getPResolution().setWidthText(Math.abs(maxX - minX), 0);

                cuttingPanel.getPResolution().setHeightText(Math.abs(maxY - minY), 0);

                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;

        }

}