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/*
* $Id: Split.java,v 1.9 2005/11/29 21:05:02 blowagie Exp $
* $Name: $
*
* This code is free software. It may only be copied or modified
* if you include the following copyright notice:
*
* This class by Mark Thompson. Copyright (c) 2002 Mark Thompson.
*
* This code 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.
*
* itext-questions@list.sourceforge.net
*/
package com.lowagie.tools.plugins;
import java.io.File;
import java.io.FileOutputStream;
import javax.swing.JInternalFrame;
import com.lowagie.text.Document;
import com.lowagie.text.DocumentException;
import com.lowagie.text.pdf.PdfContentByte;
import com.lowagie.text.pdf.PdfImportedPage;
import com.lowagie.text.pdf.PdfReader;
import com.lowagie.text.pdf.PdfWriter;
import com.lowagie.tools.arguments.FileArgument;
import com.lowagie.tools.arguments.LabelAccessory;
import com.lowagie.tools.arguments.PdfFilter;
import com.lowagie.tools.arguments.ToolArgument;
/**
* This tool lets you split a PDF in two separate PDF files.
*/
public class Split extends AbstractTool {
static {
addVersion("$Id: Split.java,v 1.9 2005/11/29 21:05:02 blowagie Exp $");
}
/**
* Constructs an Split object.
*/
public Split() {
FileArgument f = new FileArgument(this, "srcfile", "The file you want to split", false, new PdfFilter());
f.setLabel(new LabelAccessory());
arguments.add(f);
arguments.add(new FileArgument(this, "destfile1", "The file to which the first part of the original PDF has to be written", true, new PdfFilter()));
arguments.add(new FileArgument(this, "destfile2", "The file to which the second part of the original PDF has to be written", true, new PdfFilter()));
arguments.add(new ToolArgument(this, "pagenumber", "The pagenumber where you want to split", String.class.getName()));
}
/**
* @see com.lowagie.tools.plugins.AbstractTool#createFrame()
*/
protected void createFrame() {
internalFrame = new JInternalFrame("Split", true, false, true);
internalFrame.setSize(300, 80);
internalFrame.setJMenuBar(getMenubar());
System.out.println("=== Split OPENED ===");
}
/**
* @see com.lowagie.tools.plugins.AbstractTool#execute()
*/
public void execute() {
try {
if (getValue("srcfile") == null) throw new InstantiationException("You need to choose a sourcefile");
File src = (File)getValue("srcfile");
if (getValue("destfile1") == null) throw new InstantiationException("You need to choose a destination file for the first part of the PDF");
File file1 = (File)getValue("destfile1");
if (getValue("destfile2") == null) throw new InstantiationException("You need to choose a destination file for the second part of the PDF");
File file2 = (File)getValue("destfile2");
int pagenumber = Integer.parseInt((String)getValue("pagenumber"));
// we create a reader for a certain document
PdfReader reader = new PdfReader(src.getAbsolutePath());
// we retrieve the total number of pages
int n = reader.getNumberOfPages();
System.out.println("There are " + n + " pages in the original file.");
if (pagenumber < 2 || pagenumber > n) {
throw new DocumentException("You can't split this document at page " + pagenumber + "; there is no such page.");
}
// step 1: creation of a document-object
Document document1 = new Document(reader.getPageSizeWithRotation(1));
Document document2 = new Document(reader.getPageSizeWithRotation(pagenumber));
// step 2: we create a writer that listens to the document
PdfWriter writer1 = PdfWriter.getInstance(document1, new FileOutputStream(file1));
PdfWriter writer2 = PdfWriter.getInstance(document2, new FileOutputStream(file2));
// step 3: we open the document
document1.open();
PdfContentByte cb1 = writer1.getDirectContent();
document2.open();
PdfContentByte cb2 = writer2.getDirectContent();
PdfImportedPage page;
int rotation;
int i = 0;
// step 4: we add content
while (i < pagenumber - 1) {
i++;
document1.setPageSize(reader.getPageSizeWithRotation(i));
document1.newPage();
page = writer1.getImportedPage(reader, i);
rotation = reader.getPageRotation(i);
if (rotation == 90 || rotation == 270) {
cb1.addTemplate(page, 0, -1f, 1f, 0, 0, reader.getPageSizeWithRotation(i).height());
}
else {
cb1.addTemplate(page, 1f, 0, 0, 1f, 0, 0);
}
}
while (i < n) {
i++;
document2.setPageSize(reader.getPageSizeWithRotation(i));
document2.newPage();
page = writer2.getImportedPage(reader, i);
rotation = reader.getPageRotation(i);
if (rotation == 90 || rotation == 270) {
cb2.addTemplate(page, 0, -1f, 1f, 0, 0, reader.getPageSizeWithRotation(i).height());
}
else {
cb2.addTemplate(page, 1f, 0, 0, 1f, 0, 0);
}
}
// step 5: we close the document
document1.close();
document2.close();
}
catch(Exception e) {
e.printStackTrace();
}
}
/**
* @see com.lowagie.tools.plugins.AbstractTool#valueHasChanged(com.lowagie.tools.arguments.ToolArgument)
*/
public void valueHasChanged(ToolArgument arg) {
if (internalFrame == null) {
// if the internal frame is null, the tool was called from the commandline
return;
}
// represent the changes of the argument in the internal frame
}
/**
* Split a PDF in two separate PDF files.
* @param args
*/
public static void main(String[] args) {
Split tool = new Split();
if (args.length < 4) {
System.err.println(tool.getUsage());
}
tool.setArguments(args);
tool.execute();
}
/**
* @see com.lowagie.tools.plugins.AbstractTool#getDestPathPDF()
*/
protected File getDestPathPDF() throws InstantiationException {
return (File)getValue("destfile1");
}
}
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