www.pudn.com > Caliph_v0.9.13+Emirv0.8.5-src.zip > AnnotationToolkit.java
/*
* This file is part of Caliph & Emir.
*
* Caliph & Emir 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.
*
* Caliph & Emir 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 Caliph & Emir; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* Copyright statement:
* --------------------
* (c) 2002-2004 by Mathias Lux (mathias@juggle.at)
* http://www.juggle.at
*/
package at.lux.fotoannotation;
/*
* Created by Mathias Lux, mathias@juggle.at
* User: Mathias Lux, mathias@juggle.at
* Date: 12.09.2002
* Time: 22:01:22
*/
import org.jaxen.XPath;
import org.jaxen.jdom.JDOMXPath;
import org.jdom.Element;
import org.jdom.Namespace;
import javax.imageio.ImageIO;
import javax.imageio.ImageWriter;
import javax.imageio.ImageWriteParam;
import javax.imageio.IIOImage;
import javax.imageio.stream.FileImageOutputStream;
import javax.imageio.stream.ImageOutputStream;
import javax.imageio.plugins.jpeg.JPEGImageWriteParam;
import java.awt.*;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import java.util.*;
import java.util.List;
import com.sun.imageio.plugins.jpeg.JPEG;
/**
* Toolkit class for Caliph, static variables, etc.
*
* @author Mathias Lux, mathias@juggle.at
*/
public class AnnotationToolkit {
public static String AGENTS_FILE = "./agents.mp7.xml";
public static String PROGRAM_NAME = "Caliph";
public static String VERSION_NUMBER = "v0.9.13";
public static List xpathQuery(org.jdom.Element document, String xpathQuery1, Namespace xNs) {
List returnValue = new Vector();
String xpathQuery = xpathQuery1;
XPath xPath;
try {
// if there is a xmlns namespace wihtout a prefix, then
// a default one has to be added. Otherwise jaxen does not work
// Note: the prefix "x" has to be used in the xpath-query as well.
Namespace ns = document.getNamespace();
if (ns.getPrefix().length() == 0) {
StringTokenizer tokens = new StringTokenizer(xpathQuery, "/", true);
xpathQuery = "";
while (tokens.hasMoreTokens()) {
String token = tokens.nextToken();
if (!token.equalsIgnoreCase("/")) {
token = "x:" + token;
}
xpathQuery += token;
}
xPath = new JDOMXPath(xpathQuery);
xPath.addNamespace("x", ns.getURI());
} else {
xPath = new JDOMXPath(xpathQuery);
}
if (xNs != null) {
xPath.addNamespace(xNs.getPrefix(), xNs.getURI());
}
// console.echo("OLD: \"" + xpathQuery1 + "\", NEW: \"" + xpathQuery + "\"");
Object jdomNode = document; // Document, Element etc.
//XPath path = new JDOMXPath("/*"); //--> das root element
returnValue = xPath.selectNodes(jdomNode); // entries are from the type "org.jdom.Element"
} catch (Exception e) {
e.printStackTrace();
}
return returnValue;
}
/**
* loest den Pfad des Files in eine URI auf und liefert den MediaLocator DS zurück
*
* @param file java.io.File, zu dem die URI gefunden werden soll.
* @return JDOM Element mit dem MediaLocator DS oder null wenn die URI zum File nicht bestimmt werden kann.
*/
public static Element getMpeg7MediaInstance(File file) {
Namespace mpeg7 = Namespace.getNamespace("", "urn:mpeg:mpeg7:schema:2001");
Element inst = new Element("MediaInstance", mpeg7).addContent(new Element("InstanceIdentifier", mpeg7));
if (file != null) {
try {
inst.addContent(new Element("MediaLocator", mpeg7).addContent(new Element("MediaUri",
mpeg7).addContent(file.getCanonicalFile().toURI().toString())));
} catch (IOException e) {
inst = null;
}
} else {
inst = null;
}
return inst;
}
public static String getMpeg7Time() {
Calendar c = Calendar.getInstance();
c.setTime(new Date());
String t = c.get(Calendar.YEAR) + "-" + to2letters(c.get(Calendar.MONTH) + 1) + "-" + to2letters(c.get(Calendar.DAY_OF_MONTH))
+ "T" + to2letters(c.get(Calendar.HOUR_OF_DAY)) + ":" + to2letters(c.get(Calendar.MINUTE));
return t;
}
public static String getMpeg7Time(Calendar c) {
String t = c.get(Calendar.YEAR) + "-" + to2letters(c.get(Calendar.MONTH) + 1) + "-" + to2letters(c.get(Calendar.DAY_OF_MONTH))
+ "T" + to2letters(c.get(Calendar.HOUR_OF_DAY)) + ":" + to2letters(c.get(Calendar.MINUTE));
return t;
}
public static String to2letters(int number) {
String ret = null;
// String min = null;
if (number < 10)
ret = ("0" + number);
else
ret = ("" + number);
return ret;
}
public static File generateThumbnail(File f) {
File thumb = null;
try {
String name = "tn_" + f.getName();
String path = f.getParentFile().getCanonicalPath();
thumb = new File(path + "/" + name);
if (!thumb.exists()) {
Image image = ImageIO.read(f);
int x, y, max;
double factor;
x = image.getWidth(null);
y = image.getHeight(null);
if (x > y) {
max = x;
factor = 110.0 / x;
} else {
max = y;
factor = 110.0 / y;
}
x = (int) Math.floor((double) x * factor);
y = (int) Math.floor((double) y * factor);
BufferedImage thumbnailImage = new BufferedImage(120, 120, BufferedImage.TYPE_INT_RGB);
Graphics g2 = thumbnailImage.getGraphics();
g2.setColor(Color.black);
g2.fillRect(0, 0, 120, 120);
g2.drawImage(image, (120 - x) / 2, (120 - y) / 2, x, y, null);
// Find a jpeg writer
ImageWriter writer = null;
Iterator iter = ImageIO.getImageWritersByFormatName("jpg");
if (iter.hasNext()) {
writer = (ImageWriter) iter.next();
} else {
System.err.print("Didn't find JPEG Writer -> could not create thumbnail");
}
// Prepare output file
ImageOutputStream ios = ImageIO.createImageOutputStream(thumb);
writer.setOutput(ios);
// Set the compression quality
ImageWriteParam iwparam = writer.getDefaultWriteParam();
iwparam.setCompressionMode(ImageWriteParam.MODE_EXPLICIT);
iwparam.setCompressionQuality(0.9f);
// Write the image
writer.write(null, new IIOImage(thumbnailImage, null, null), iwparam);
}
} catch (IOException e) {
e.printStackTrace();
}
return thumb;
}
}