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* Copyright (c) 2005, www.pdfbox.org
* All rights reserved.
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* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
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package org.pdfbox.examples.pdmodel;
import org.pdfbox.pdmodel.PDDocument;
import org.pdfbox.pdmodel.PDPage;
import org.pdfbox.pdmodel.common.PDRectangle;
import org.pdfbox.pdmodel.edit.PDPageContentStream;
import org.pdfbox.pdmodel.font.PDFont;
import org.pdfbox.pdmodel.font.PDType1Font;
import org.pdfbox.pdmodel.graphics.color.PDGamma;
import org.pdfbox.pdmodel.interactive.action.type.PDActionURI;
import org.pdfbox.pdmodel.interactive.annotation.PDAnnotationLine;
import org.pdfbox.pdmodel.interactive.annotation.PDAnnotationSquareCircle;
import org.pdfbox.pdmodel.interactive.annotation.PDAnnotationTextMarkup;
import org.pdfbox.pdmodel.interactive.annotation.PDAnnotationLink;
import org.pdfbox.pdmodel.interactive.annotation.PDBorderStyleDictionary;
import java.util.List;
/**
* This is an example on how to add annotations to pages of a PDF document.
*
* @author Paul King
* @version $Revision: 1.2 $
*/
public class Annotation
{
private Annotation()
{
//utility class, should not be instantiated.
}
/**
* This will create a doucument showing various annotations.
*
* @param args The command line arguments.
*
* @throws Exception If there is an error parsing the document.
*/
public static void main( String[] args ) throws Exception
{
if( args.length != 1 )
{
usage();
}
else
{
PDDocument document = new PDDocument();
try
{
PDPage page = new PDPage();
document.addPage(page);
List annotations = page.getAnnotations();
// Setup some basic reusable objects/constants
// Annotations themselves can only be used once!
float inch = 72;
PDGamma colourRed = new PDGamma();
colourRed.setR(1);
PDGamma colourBlue = new PDGamma();
colourBlue.setB(1);
PDGamma colourBlack = new PDGamma();
PDBorderStyleDictionary borderThick = new PDBorderStyleDictionary();
borderThick.setWidth(inch/12); // 12th inch
PDBorderStyleDictionary borderThin = new PDBorderStyleDictionary();
borderThin.setWidth(inch/72); // 1 point
PDBorderStyleDictionary borderULine = new PDBorderStyleDictionary();
borderULine.setStyle(PDBorderStyleDictionary.STYLE_UNDERLINE);
borderULine.setWidth(inch/72); // 1 point
float pw = page.getMediaBox().getUpperRightX();
float ph = page.getMediaBox().getUpperRightY();
// First add some text, two lines we'll add some annotations to this later
PDFont font = PDType1Font.HELVETICA_BOLD;
PDPageContentStream contentStream = new PDPageContentStream(document, page);
contentStream.beginText();
contentStream.setFont( font, 18 );
contentStream.moveTextPositionByAmount( inch, ph-inch-18);
contentStream.drawString( "PDFBox" );
contentStream.moveTextPositionByAmount( 0,-(inch/2));
contentStream.drawString( "Click Here" );
contentStream.endText();
contentStream.close();
// Now add the markup annotation, a highlight to PDFBox text
PDAnnotationTextMarkup txtMark = new PDAnnotationTextMarkup(PDAnnotationTextMarkup.SUB_TYPE_HIGHLIGHT);
txtMark.setColour(colourBlue);
txtMark.setConstantOpacity((float)0.2); // Make the highlight 20% transparent
// Set the rectangle containing the markup
float textWidth = (font.getStringWidth( "PDFBox" )/1000) * 18;
PDRectangle position = new PDRectangle();
position.setLowerLeftX(inch);
position.setLowerLeftY( ph-inch-18 );
position.setUpperRightX(72 + textWidth);
position.setUpperRightY(ph-inch);
txtMark.setRectangle(position);
// work out the points forming the four corners of the annotations
// set out in anti clockwise form (Completely wraps the text)
// OK, the below doesn't match that description.
// It's what acrobat 7 does and displays properly!
float[] quads = new float[8];
quads[0] = position.getLowerLeftX(); // x1
quads[1] = position.getUpperRightY()-2; // y1
quads[2] = position.getUpperRightX(); // x2
quads[3] = quads[1]; // y2
quads[4] = quads[0]; // x3
quads[5] = position.getLowerLeftY()-2; // y3
quads[6] = quads[2]; // x4
quads[7] = quads[5]; // y5
txtMark.setQuadPoints(quads);
txtMark.setContents("Highlighted since it's important");
annotations.add(txtMark);
// Now add the link annotation, so the clickme works
PDAnnotationLink txtLink = new PDAnnotationLink();
txtLink.setBorderStyle(borderULine);
// Set the rectangle containing the link
textWidth = (font.getStringWidth( "Click Here" )/1000) * 18;
position = new PDRectangle();
position.setLowerLeftX(inch);
position.setLowerLeftY( ph-(float)(1.5*inch)-20); // down a couple of points
position.setUpperRightX(72 + textWidth);
position.setUpperRightY(ph-(float)(1.5*inch));
txtLink.setRectangle(position);
// add an action
PDActionURI action = new PDActionURI();
action.setURI("http://www.pdfbox.org");
txtLink.setAction(action);
annotations.add(txtLink);
// Now draw a few more annotations
PDAnnotationSquareCircle aCircle =
new PDAnnotationSquareCircle( PDAnnotationSquareCircle.SUB_TYPE_CIRCLE);
aCircle.setContents("Circle Annotation");
aCircle.setInteriorColour(colourRed); // Fill in circle in red
aCircle.setColour(colourBlue); // The border itself will be blue
aCircle.setBorderStyle(borderThin);
// Place the annotation on the page, we'll make this 1" round
// 3" down, 1" in on the page
position = new PDRectangle();
position.setLowerLeftX(inch);
position.setLowerLeftY(ph-(3*inch)-inch); // 1" height, 3" down
position.setUpperRightX(2*inch); // 1" in, 1" width
position.setUpperRightY(ph-(3*inch)); // 3" down
aCircle.setRectangle(position);
// add to the annotations on the page
annotations.add(aCircle);
// Now a square annotation
PDAnnotationSquareCircle aSquare =
new PDAnnotationSquareCircle( PDAnnotationSquareCircle.SUB_TYPE_SQUARE);
aSquare.setContents("Square Annotation");
aSquare.setColour(colourRed); // Outline in red, not setting a fill
aSquare.setBorderStyle(borderThick);
// Place the annotation on the page, we'll make this 1" (72points) square
// 3.5" down, 1" in from the right on the page
position = new PDRectangle(); // Reuse the variable, but note it's a new object!
position.setLowerLeftX(pw-(2*inch)); // 1" in from right, 1" wide
position.setLowerLeftY(ph-(float)(3.5*inch) - inch); // 1" height, 3.5" down
position.setUpperRightX(pw-inch); // 1" in from right
position.setUpperRightY(ph-(float)(3.5*inch)); // 3.5" down
aSquare.setRectangle(position);
// add to the annotations on the page
annotations.add(aSquare);
// Now we want to draw a line between the two, one end with an open arrow
PDAnnotationLine aLine = new PDAnnotationLine();
aLine.setEndPointEndingStyle( PDAnnotationLine.LE_OPEN_ARROW );
aLine.setContents("Circle->Square");
aLine.setCaption(true); // Make the contents a caption on the line
// Set the rectangle containing the line
position = new PDRectangle(); // Reuse the variable, but note it's a new object!
position.setLowerLeftX(2*inch); // 1" in + width of circle
position.setLowerLeftY(ph-(float)(3.5*inch)-inch); // 1" height, 3.5" down
position.setUpperRightX(pw-inch-inch); // 1" in from right, and width of square
position.setUpperRightY(ph-(3*inch)); // 3" down (top of circle)
aLine.setRectangle(position);
// Now set the line position itself
float[] linepos = new float[4];
linepos[0] = 2*inch; // x1 = rhs of circle
linepos[1] = ph-(float)(3.5*inch); // y1 halfway down circle
linepos[2] = pw-(2*inch); // x2 = lhs of square
linepos[3] = ph-(4*inch); // y2 halfway down square
aLine.setLine(linepos);
aLine.setBorderStyle(borderThick);
aLine.setColour(colourBlack);
// add to the annotations on the page
annotations.add(aLine);
// Finally all done
document.save( args[0] );
}
finally
{
document.close();
}
}
}
/**
* This will print the usage for this document.
*/
private static void usage()
{
System.err.println( "Usage: java org.pdfbox.examples.pdmodel.Annotation <output-pdf>" );
}
}