/*
* $Id: ImageXRefViewer.java,v 1.3 2006/04/05 07:55:00 blowagie Exp $
* $Name: $
*
* Copyright 2005 by Carsten Hammer and Bruno Lowagie.
*
* The contents of this file are subject to the Mozilla Public License Version 1.1
* (the "License"); you may not use this file except in compliance with the License.
* You may obtain a copy of the License at http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the License.
*
* The Original Code is 'iText, a free JAVA-PDF library'.
*
* The Initial Developer of the Original Code is Bruno Lowagie. Portions created by
* the Initial Developer are Copyright (C) 1999-2006 by Bruno Lowagie.
* All Rights Reserved.
* Co-Developer of the code is Paulo Soares. Portions created by the Co-Developer
* are Copyright (C) 2000-2006 by Paulo Soares. All Rights Reserved.
*
* Contributor(s): all the names of the contributors are added in the source code
* where applicable.
*
* Alternatively, the contents of this file may be used under the terms of the
* LGPL license (the "GNU LIBRARY GENERAL PUBLIC LICENSE"), in which case the
* provisions of LGPL are applicable instead of those above. If you wish to
* allow use of your version of this file only under the terms of the LGPL
* License and not to allow others to use your version of this file under
* the MPL, indicate your decision by deleting the provisions above and
* replace them with the notice and other provisions required by the LGPL.
* If you do not delete the provisions above, a recipient may use your version
* of this file under either the MPL or the GNU LIBRARY GENERAL PUBLIC LICENSE.
*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the MPL as stated above or under the terms of the GNU
* Library General Public License as published by the Free Software Foundation;
* either version 2 of the License, or any later version.
*
* This library 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 Library general Public License for more
* details.
*
* If you didn't download this code from the following link, you should check if
* you aren't using an obsolete version:
* http://www.lowagie.com/iText/
*/
package com.lowagie.tools.plugins;
import java.awt.BorderLayout;
import java.awt.CardLayout;
import java.awt.Toolkit;
import java.io.File;
import javax.swing.BorderFactory;
import javax.swing.JInternalFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JSpinner;
import javax.swing.SpinnerModel;
import javax.swing.SwingConstants;
import javax.swing.event.ChangeEvent;
import com.lowagie.text.pdf.PRStream;
import com.lowagie.text.pdf.PdfName;
import com.lowagie.text.pdf.PdfObject;
import com.lowagie.text.pdf.PdfReader;
import com.lowagie.text.pdf.PdfStream;
import com.lowagie.tools.arguments.FileArgument;
import com.lowagie.tools.arguments.PdfFilter;
import com.lowagie.tools.arguments.ToolArgument;
import javax.swing.JScrollPane;
import com.lowagie.tools.SwingWorker;
import java.io.*;
import java.awt.Cursor;
/**
* Allows you to inspect the Image XObjects inside a PDF file.
*/
public class ImageXRefViewer
extends AbstractTool {
static {
addVersion("$Id: ImageXRefViewer.java,v 1.3 2006/04/05 07:55:00 blowagie Exp $");
}
class ViewXRefImages_jSpinner1_propertyChangeAdapter
implements javax.swing.event.ChangeListener {
private ImageXRefViewer adaptee;
ViewXRefImages_jSpinner1_propertyChangeAdapter(ImageXRefViewer adaptee) {
this.adaptee = adaptee;
}
/**
* @see javax.swing.event.ChangeListener#stateChanged(javax.swing.event.ChangeEvent)
*/
public void stateChanged(ChangeEvent e) {
adaptee.jSpinner_propertyChange(e);
}
}
JPanel jPanel1 = new JPanel();
BorderLayout borderLayout1 = new BorderLayout();
JLabel jLabel1 = new JLabel();
int picturenumber = 0;
JPanel jPanel2 = new JPanel();
BorderLayout borderLayout2 = new BorderLayout();
CardLayout cardLayout1 = new CardLayout();
JPanel jPanel3 = new JPanel();
JSpinner jSpinner1 = new JSpinner();
BorderLayout borderLayout3 = new BorderLayout();
SpinnerModel spinnerModel1 = jSpinner1.getModel();
JScrollPane jScrollPane1 = new JScrollPane();
/**
* Creates a ViewImageXObjects object.
*/
public ImageXRefViewer() {
arguments.add(new FileArgument(this, "srcfile", "The file you want to inspect", false, new PdfFilter()));
}
/**
* @see com.lowagie.tools.plugins.AbstractTool#getDestPathPDF()
*/
protected File getDestPathPDF() throws InstantiationException {
throw new InstantiationException("There is no file to show.");
}
/**
* @see com.lowagie.tools.plugins.AbstractTool#createFrame()
*/
protected void createFrame() {
internalFrame = new JInternalFrame("View Image XObjects", true, false, true);
internalFrame.setSize(500, 300);
internalFrame.setJMenuBar(getMenubar());
internalFrame.getContentPane().setLayout(borderLayout1);
jPanel1.setLayout(borderLayout2);
jLabel1.setHorizontalAlignment(SwingConstants.CENTER);
jLabel1.setText("images");
jPanel2.setLayout(cardLayout1);
jPanel3.setLayout(borderLayout3);
jSpinner1.addChangeListener(new
ViewXRefImages_jSpinner1_propertyChangeAdapter(this));
jPanel2.setBorder(BorderFactory.createEtchedBorder());
internalFrame.getContentPane().add(jPanel1, java.awt.BorderLayout.CENTER);
jPanel3.add(jSpinner1, java.awt.BorderLayout.CENTER);
jPanel3.add(jLabel1, java.awt.BorderLayout.NORTH);
jPanel1.add(jPanel3, java.awt.BorderLayout.NORTH);
jPanel1.add(jScrollPane1, java.awt.BorderLayout.CENTER);
jScrollPane1.setViewportView(jPanel2);
System.out.println("=== Image XObject Viewer OPENED ===");
}
/**
* @see com.lowagie.tools.plugins.AbstractTool#valueHasChanged(com.lowagie.tools.arguments.ToolArgument)
*/
public void valueHasChanged(ToolArgument arg) {
// do nothing
}
/**
* Reflects the change event in the JSpinner object.
* @param evt
*/
public void jSpinner_propertyChange(ChangeEvent evt) {
int blatt = Integer.parseInt(jSpinner1.getValue().toString());
if (blatt < 0) blatt = 0;
if (blatt >= picturenumber) blatt = picturenumber - 1;
this.cardLayout1.show(jPanel2, String.valueOf(blatt));
jPanel2.repaint();
}
/**
* Shows the images that are added to the PDF as Image XObjects.
* @param args
*/
public static void main(String[] args) {
InspectPDF tool = new InspectPDF();
if (args.length < 1) {
System.err.println(tool.getUsage());
}
tool.setArguments(args);
tool.execute();
}
/**
* @see com.lowagie.tools.plugins.AbstractTool#execute()
*/
public void execute() {
picturenumber = 0;
try {
if (getValue("srcfile") == null) throw new InstantiationException("You need to choose a sourcefile");
SwingWorker work= new SwingWorker(){
public Object construct() {
try {
PdfReader reader = new PdfReader( ( (File)
getValue("srcfile")).getAbsolutePath());
for (int i = 0; i < reader.getXrefSize(); i++) {
PdfObject pdfobj = reader.getPdfObject(i);
if (pdfobj != null) {
if (pdfobj.isStream()) {
PdfStream pdfdict = (PdfStream) pdfobj;
PdfObject pdfsubtype = pdfdict.get(PdfName.
SUBTYPE);
if (pdfsubtype == null) {
continue;
}
if (!pdfsubtype.toString().equals(PdfName.
IMAGE.toString())) {
continue;
}
System.out.println("picturenumber: " +
picturenumber);
System.out.println("height:" +
pdfdict.get(PdfName.HEIGHT));
System.out.println("width:" +
pdfdict.get(PdfName.WIDTH));
System.out.println("bitspercomponent:" +
pdfdict.get(PdfName.BITSPERCOMPONENT));
byte[] barr = PdfReader.getStreamBytesRaw( (
PRStream) pdfdict);
java.awt.Image im = Toolkit.
getDefaultToolkit().createImage(barr);
javax.swing.ImageIcon ii = new javax.swing.
ImageIcon(im);
JLabel jLabel1 = new JLabel();
jLabel1.setIcon(ii);
jPanel2.add(jLabel1, "" + picturenumber++);
}
}
}
}
catch (InstantiationException ex) {
}
catch (IOException ex) {
}
internalFrame.setCursor(Cursor.getDefaultCursor());
return null;
}
};
internalFrame.setCursor(Cursor.getPredefinedCursor(Cursor.WAIT_CURSOR));
work.start();
}
catch(Exception e) {
JOptionPane.showMessageDialog(internalFrame,
e.getMessage(),
e.getClass().getName(),
JOptionPane.ERROR_MESSAGE);
System.err.println(e.getMessage());
}
}
}