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.swing.impl.preview;

import java.awt.Component;

import java.awt.Graphics2D;

import javax.swing.JOptionPane;

import org.gvsig.gui.beans.imagenavigator.IClientImageNavigator;

import org.gvsig.gui.beans.imagenavigator.ImageUnavailableException;

import org.gvsig.i18n.Messages;

import org.gvsig.raster.swing.preview.DataSourcePreview;

import org.gvsig.raster.swing.preview.PreviewRenderProcess;

import org.slf4j.Logger;

import org.slf4j.LoggerFactory;

/**

 * Gestor de visualizaci?n de preview. Se encarga del repintado de la imagen

 * de la previsualizaci?n

 *

 * @author Nacho Brodin nachobrodin@gmail.com

 */

public class PreviewRequestManager implements IClientImageNavigator {

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

        private DataSourcePreview       previewLayer      = null;

        private PreviewRenderProcess    renderProcess     = null;

        /**

         * Construye un ColorTableListener

         * @param

         */

        public PreviewRequestManager(        PreviewRenderProcess renderProcess,

                                                                        DataSourcePreview layer) {

                this.renderProcess = renderProcess;

                setLayer(layer);

        }

        /**

         * Asigna la capa raster de la vista

         * @param fLayer

         */

        private void setLayer(DataSourcePreview fLayer) {

                //if (fLayer instanceof IRasterLayerActions) {

                        //IRasterLayerActions ly = (IRasterLayerActions) fLayer;

                        //try {

                                //Este c?digo no va bien pq la preview siempre tiene el extent global y el ?ltimo fichero

                                //puede ser de un zoom

                                /*if(ly.isActionEnabled(IRasterLayerActions.REMOTE_ACTIONS))

                                        previewLayer = (FLyrRaster)fLayer.getFileLayer();

                                else*/

                                        previewLayer = fLayer.cloneDataSourcePreview();                                        

                        //} catch (Exception e) {

                                //messageBoxError("preview_not_available", previewBasePanel, e);

                        //}

                //}

        }

        /**

         * Cierra la capa abierta para previsualizaci?n

         */

        public void closePreviewLayer() {

                previewLayer.closePreviewLayer();

        }

        public void drawImage(Graphics2D g, double x1, double y1, double x2, double y2, double zoom, int width, int height)

                throws ImageUnavailableException {

                if (previewLayer == null)

                        throw new ImageUnavailableException(Messages.getText("error_dont_exists_layer"));

                previewLayer.pushStatus();

                try {

                        if(renderProcess != null)

                                renderProcess.process(previewLayer);

                } catch (ImageUnavailableException e2) {

                        throw new ImageUnavailableException(Messages.getText("error_adding_filters"));

                } catch (Exception e2) {

                        logger.debug("error_adding_filters", this, e2);

                        throw new ImageUnavailableException(Messages.getText("error_adding_filters"));

                }

                try {

                        double[] coords = new double[]{x1, y1, x2, y2};

                        previewLayer.draw(null, g, coords, width, height, null, 1.0);

                } catch (ImageUnavailableException e) {

                        logger.debug("error_preview_render", this, e);

                        throw new ImageUnavailableException(Messages.getText("error_preview_render"));

                } catch (Exception e2) {

                        logger.debug("error_preview_render", this, e2);

                        throw new ImageUnavailableException(Messages.getText("error_preview_render"));

                }

                previewLayer.popStatus();

        }

        /**

         * Shows a error dialog with a text and a accept button 

         * @param msg Message to show in the dialog

         * @param parentWindow Parent window

         */

        public void messageBoxError(String msg, Object parentWindow, Exception exception) {

                logger.debug(msg, parentWindow, exception);

                String string = Messages.getText("accept");

                Object[] options = {string};

                JOptionPane.showOptionDialog((Component)parentWindow,

                                        "<html>" + Messages.getText(msg).replaceAll("\n", "<br>") + "</html>",

                                        Messages.getText("confirmacion"),

                                        JOptionPane.OK_OPTION,

                                        JOptionPane.ERROR_MESSAGE,

                                        null,

                                        options,

                                        string);

        }

}