001/* ===========================================================
002 * Orson Charts : a 3D chart library for the Java(tm) platform
003 * ===========================================================
004 * 
005 * (C)opyright 2013-2016, by Object Refinery Limited.  All rights reserved.
006 * 
007 * http://www.object-refinery.com/orsoncharts/index.html
008 * 
009 * This program is free software: you can redistribute it and/or modify
010 * it under the terms of the GNU General Public License as published by
011 * the Free Software Foundation, either version 3 of the License, or
012 * (at your option) any later version.
013 *
014 * This program is distributed in the hope that it will be useful,
015 * but WITHOUT ANY WARRANTY; without even the implied warranty of
016 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
017 * GNU General Public License for more details.
018 *
019 * You should have received a copy of the GNU General Public License
020 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
021 * 
022 * [Oracle and Java are registered trademarks of Oracle and/or its affiliates. 
023 * Other names may be trademarks of their respective owners.]
024 * 
025 * If you do not wish to be bound by the terms of the GPL, an alternative
026 * commercial license can be purchased.  For details, please see visit the
027 * Orson Charts home page:
028 * 
029 * http://www.object-refinery.com/orsoncharts/index.html
030 * 
031 */
032
033package com.orsoncharts.graphics3d.swing;
034
035import java.awt.Graphics2D;
036import java.awt.Rectangle;
037import java.awt.event.ActionEvent;
038import java.awt.geom.Dimension2D;
039import java.awt.image.BufferedImage;
040import java.io.File;
041import java.io.IOException;
042
043import javax.imageio.ImageIO;
044import javax.swing.AbstractAction;
045import javax.swing.JFileChooser;
046import javax.swing.filechooser.FileNameExtensionFilter;
047
048import com.orsoncharts.Resources;
049import com.orsoncharts.util.ArgChecks;
050
051/**
052 * An action that handles saving the content of a panel to a PNG image.
053 * <br><br>
054 * NOTE: This class is serializable, but the serialization format is subject 
055 * to change in future releases and should not be relied upon for persisting 
056 * instances of this class. 
057 */
058@SuppressWarnings("serial")
059public class ExportToPNGAction extends AbstractAction {
060
061    /** The panel to which this action applies. */
062    private Panel3D panel;
063  
064    /**
065     * Creates a new action instance.
066     * 
067     * @param panel  the panel ({@code null} not permitted).
068     */
069    public ExportToPNGAction(Panel3D panel) {
070        super(Resources.localString("PNG_MENU_LABEL"));
071        ArgChecks.nullNotPermitted(panel, "panel");
072        this.panel = panel;
073    }
074
075    /**
076     * Writes the content of the panel to a PNG image, using Java's ImageIO.
077     * 
078     * @param e  the event.
079     */
080    @Override
081    public void actionPerformed(ActionEvent e) {
082        JFileChooser fileChooser = new JFileChooser();
083        FileNameExtensionFilter filter = new FileNameExtensionFilter(
084            Resources.localString("PNG_FILE_FILTER_DESCRIPTION"), "png");
085        fileChooser.addChoosableFileFilter(filter);
086        fileChooser.setFileFilter(filter);
087
088        int option = fileChooser.showSaveDialog(this.panel);
089        if (option == JFileChooser.APPROVE_OPTION) {
090            String filename = fileChooser.getSelectedFile().getPath();
091            if (!filename.endsWith(".png")) {
092                filename = filename + ".png";
093            }
094            Dimension2D size = this.panel.getSize();
095            int w = (int) size.getWidth();
096            int h = (int) size.getHeight();
097            BufferedImage image = new BufferedImage(w, h, 
098                    BufferedImage.TYPE_INT_ARGB);
099            Graphics2D g2 = image.createGraphics();
100            this.panel.getDrawable().draw(g2, new Rectangle(w, h));
101            try {
102                ImageIO.write(image, "png", new File(filename));
103            } catch (IOException ex) {
104                throw new RuntimeException(ex);
105            }
106        }
107    }
108    
109}