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package de.lmu.ifi.dbs.elki.visualization.savedialog;
/*
This file is part of ELKI:
Environment for Developing KDD-Applications Supported by Index-Structures
Copyright (C) 2013
Ludwig-Maximilians-Universität München
Lehr- und Forschungseinheit für Datenbanksysteme
ELKI Development Team
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as published by
the Free Software Foundation, either version 3 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 Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
import java.awt.Component;
import java.io.File;
import java.io.IOException;
import javax.swing.JFileChooser;
import javax.swing.JOptionPane;
import javax.xml.transform.TransformerException;
import javax.xml.transform.TransformerFactoryConfigurationError;
import org.apache.batik.transcoder.TranscoderException;
import de.lmu.ifi.dbs.elki.logging.Logging;
import de.lmu.ifi.dbs.elki.utilities.FileUtil;
import de.lmu.ifi.dbs.elki.visualization.svg.SVGPlot;
/**
* A save dialog to save/export a SVG image to a file.
*
* Supported formats:
* <ul>
* <li>JPEG (broken) (with width and height options)</li>
* <li>PNG (with width and height options)</li>
* <li>PDF</li>
* <li>PS</li>
* <li>EPS</li>
* <li>SVG</li>
* </ul>
*
* @author Simon Mittermüller
*
* @apiviz.composedOf SaveOptionsPanel
*/
public class SVGSaveDialog {
/** The default title. "Save as ...". */
public static final String DEFAULT_TITLE = "Save as ...";
/** Static logger reference */
private static final Logging LOG = Logging.getLogger(SVGSaveDialog.class);
/** Automagic file format */
final static String automagic_format = "automatic";
/** Supported file format (extensions) */
final static String[] formats;
/** Visible file formats */
final static String[] visibleformats;
static {
// FOP installed?
if (SVGPlot.hasFOPInstalled()) {
formats = new String[] { "svg", "png", "jpeg", "jpg", "pdf", "ps", "eps" };
visibleformats = new String[] { automagic_format, "svg", "png", "jpeg", "pdf", "ps", "eps" };
} else {
formats = new String[] { "svg", "png", "jpeg", "jpg" };
visibleformats = new String[] { automagic_format, "svg", "png", "jpeg" };
}
}
/**
* Show a "Save as" dialog.
*
* @param plot The plot to be exported.
* @param width The width of the exported image (when export to JPEG/PNG).
* @param height The height of the exported image (when export to JPEG/PNG).
* @return Result from {@link JFileChooser#showSaveDialog}
*/
public static int showSaveDialog(SVGPlot plot, int width, int height) {
double quality = 1.0;
int ret = -1;
JFileChooser fc = new JFileChooser(new File("."));
fc.setDialogTitle(DEFAULT_TITLE);
// fc.setFileFilter(new ImageFilter());
SaveOptionsPanel optionsPanel = new SaveOptionsPanel(fc, width, height);
fc.setAccessory(optionsPanel);
ret = fc.showSaveDialog(null);
fc.setDialogTitle("Saving... Please wait.");
if (ret == JFileChooser.APPROVE_OPTION) {
File file = fc.getSelectedFile();
String format = optionsPanel.getSelectedFormat();
if (format == null || automagic_format.equals(format)) {
format = guessFormat(file.getName());
}
try {
if (format == null) {
showError(fc, "Error saving image.", "File format not recognized.");
} else if ("jpeg".equals(format) || "jpg".equals(format)) {
quality = optionsPanel.getJPEGQuality();
plot.saveAsJPEG(file, width, height, quality);
} else if ("png".equals(format)) {
plot.saveAsPNG(file, width, height);
} else if ("ps".equals(format)) {
plot.saveAsPS(file);
} else if ("eps".equals(format)) {
plot.saveAsEPS(file);
} else if ("pdf".equals(format)) {
plot.saveAsPDF(file);
} else if ("svg".equals(format)) {
plot.saveAsSVG(file);
} else {
showError(fc, "Error saving image.", "Unsupported format: " + format);
}
} catch (java.lang.IncompatibleClassChangeError e) {
showError(fc, "Error saving image.", "It seems that your Java version is incompatible with this version of Batik and Jpeg writing. Sorry.");
} catch (ClassNotFoundException e) {
showError(fc, "Error saving image.", "A class was not found when saving this image. Maybe installing Apache FOP will help (for PDF, PS and EPS output).\n" + e.toString());
} catch (IOException e) {
LOG.exception(e);
showError(fc, "Error saving image.", e.toString());
} catch (TranscoderException e) {
LOG.exception(e);
showError(fc, "Error saving image.", e.toString());
} catch (TransformerFactoryConfigurationError e) {
LOG.exception(e);
showError(fc, "Error saving image.", e.toString());
} catch (TransformerException e) {
LOG.exception(e);
showError(fc, "Error saving image.", e.toString());
} catch (Exception e) {
LOG.exception(e);
showError(fc, "Error saving image.", e.toString());
}
} else if (ret == JFileChooser.ERROR_OPTION) {
showError(fc, "Error in file dialog.", "Unknown Error.");
} else if (ret == JFileChooser.CANCEL_OPTION) {
// do nothing - except return result
}
return ret;
}
/**
* Guess a supported format from the file name. For "auto" format handling.
*
* @param name File name
* @return format or "null"
*/
public static String guessFormat(String name) {
String ext = FileUtil.getFilenameExtension(name);
for (String format : formats) {
if (format.equals(ext)) {
return ext;
}
}
return null;
}
/**
* @return the formats
*/
public static String[] getFormats() {
return formats;
}
/**
* @return the visibleformats
*/
public static String[] getVisibleFormats() {
return visibleformats;
}
/**
* Helper method to show a error message as "popup". Calls
* {@link JOptionPane#showMessageDialog(java.awt.Component, Object)}.
*
* @param parent The parent component for the popup.
* @param msg The message to be displayed.
* */
private static void showError(Component parent, String title, String msg) {
JOptionPane.showMessageDialog(parent, msg, title, JOptionPane.ERROR_MESSAGE);
}
}
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