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273 lines
7.9 KiB
Java
273 lines
7.9 KiB
Java
/*
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* $Id: PDFAnnot.java,v 1.2 2007/08/26 18:56:35 gil1 Exp $
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*
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* $Date: 2007/08/26 18:56:35 $
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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package gnu.jpdf;
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import java.io.IOException;
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import java.io.OutputStream;
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import java.io.Serializable;
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/**
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* <p>This class defines an annotation (commonly known as a Bookmark).</p>
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*
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* @author Eric Z. Beard, ericzbeard@hotmail.com
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* @author Peter T Mount, http://www.retep.org.uk/pdf/
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* @version $Revision: 1.2 $, $Date: 2007/08/26 18:56:35 $
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*/
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public class PDFAnnot extends PDFObject implements Serializable
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{
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/*
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* NOTE: The original class is the work of Peter T. Mount, who released it
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* in the uk.org.retep.pdf package. It was modified by Eric Z. Beard as
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* follows: the package name was changed to gnu.pdf. It is still
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* licensed under the LGPL.
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*/
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/**
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* Solid border. The border is drawn as a solid line.
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*/
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public static final short SOLID = 0;
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/**
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* The border is drawn with a dashed line.
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*/
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public static final short DASHED = 1;
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/**
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* The border is drawn in a beveled style (faux three-dimensional) such
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* that it looks as if it is pushed out of the page (opposite of INSET)
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*/
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public static final short BEVELED = 2;
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/**
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* The border is drawn in an inset style (faux three-dimensional) such
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* that it looks as if it is inset into the page (opposite of BEVELED)
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*/
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public static final short INSET = 3;
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/**
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* The border is drawn as a line on the bottom of the annotation rectangle
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*/
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public static final short UNDERLINED = 4;
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/**
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* The subtype of the outline, ie text, note, etc
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*/
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private String subtype;
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/**
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* The size of the annotation
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*/
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private int l,b,r,t;
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/**
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* The text of a text annotation
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*/
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private String s;
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/**
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* flag used to indicate that the destination should fit the screen
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*/
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private static final int FULL_PAGE = -9999;
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/**
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* Link to the Destination page
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*/
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private PDFObject dest;
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/**
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* If fl!=FULL_PAGE then this is the region of the destination page shown.
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* Otherwise they are ignored.
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*/
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private int fl,fb,fr,ft;
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/**
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* the border for this annotation
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*/
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private PDFBorder border;
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/**
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* This is used to create an annotation.
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* @param s Subtype for this annotation
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* @param l Left coordinate
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* @param b Bottom coordinate
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* @param r Right coordinate
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* @param t Top coordinate
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*/
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protected PDFAnnot(String s,int l,int b,int r,int t) {
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super("/Annot");
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subtype = s;
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this.l = l;
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this.b = b;
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this.r = r;
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this.t = t;
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}
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/**
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* Creates a text annotation
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* @param l Left coordinate
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* @param b Bottom coordinate
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* @param r Right coordinate
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* @param t Top coordinate
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* @param s Text for this annotation
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*/
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public PDFAnnot(int l,int b,int r,int t,String s) {
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this("/Text",l,b,r,t);
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this.s = s;
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}
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/**
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* Creates a link annotation
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* @param l Left coordinate
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* @param b Bottom coordinate
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* @param r Right coordinate
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* @param t Top coordinate
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* @param dest Destination for this link. The page will fit the display.
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*/
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public PDFAnnot(int l,int b,int r,int t,PDFObject dest) {
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this("/Link",l,b,r,t);
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this.dest = dest;
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this.fl = FULL_PAGE; // this is used to indicate a full page
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}
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/**
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* Creates a link annotation
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* @param l Left coordinate
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* @param b Bottom coordinate
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* @param r Right coordinate
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* @param t Top coordinate
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* @param dest Destination for this link
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* @param fl Left coordinate
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* @param fb Bottom coordinate
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* @param fr Right coordinate
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* @param ft Top coordinate
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* <br><br>Rectangle describing what part of the page to be displayed
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* (must be in User Coordinates)
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*/
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public PDFAnnot(int l,int b,int r,int t,
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PDFObject dest,
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int fl,int fb,int fr,int ft
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) {
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this("/Link",l,b,r,t);
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this.dest = dest;
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this.fl = fl;
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this.fb = fb;
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this.fr = fr;
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this.ft = ft;
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}
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/**
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* Sets the border for the annotation. By default, no border is defined.
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*
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* <p>If the style is DASHED, then this method uses PDF's default dash
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* scheme {3}
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*
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* <p>Important: the annotation must have been added to the document before
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* this is used. If the annotation was created using the methods in
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* PDFPage, then the annotation is already in the document.
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*
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* @param style Border style SOLID, DASHED, BEVELED, INSET or UNDERLINED.
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* @param width Width of the border
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*/
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public void setBorder(short style,double width) {
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border = new PDFBorder(style,width);
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pdfDocument.add(border);
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}
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/**
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* Sets the border for the annotation. Unlike the other method, this
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* produces a dashed border.
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*
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* <p>Important: the annotation must have been added to the document before
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* this is used. If the annotation was created using the methods in
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* PDFPage, then the annotation is already in the document.
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*
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* @param width Width of the border
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* @param dash Array of lengths, used for drawing the dashes. If this
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* is null, then the default of {3} is used.
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*/
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public void setBorder(double width,double dash[]) {
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border = new PDFBorder(width,dash);
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pdfDocument.add(border);
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}
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/**
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* Should this be public??
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*
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* @param os OutputStream to send the object to
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* @exception IOException on error
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*/
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public void write(OutputStream os) throws IOException {
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// Write the object header
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writeStart(os);
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// now the objects body
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os.write("/Subtype ".getBytes());
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os.write(subtype.getBytes());
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os.write("\n/Rect [".getBytes());
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os.write(Integer.toString(l).getBytes());
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os.write(" ".getBytes());
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os.write(Integer.toString(b).getBytes());
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os.write(" ".getBytes());
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os.write(Integer.toString(r).getBytes());
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os.write(" ".getBytes());
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os.write(Integer.toString(t).getBytes());
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os.write("]\n".getBytes());
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// handle the border
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if(border==null) {
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os.write("/Border [0 0 0]\n".getBytes());
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//if(pdf.defaultOutlineBorder==null)
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//pdf.add(pdf.defaultOutlineBorder = new border(SOLID,0.0));
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//os.write(pdf.defaultOutlineBorder.toString().getBytes());
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} else {
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os.write("/BS ".getBytes());
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os.write(border.toString().getBytes());
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os.write("\n".getBytes());
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}
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// Now the annotation subtypes
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if(subtype.equals("/Text")) {
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os.write("/Contents ".getBytes());
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os.write(PDFStringHelper.makePDFString(s).getBytes());
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os.write("\n".getBytes());
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} else if(subtype.equals("/Link")) {
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os.write("/Dest [".getBytes());
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os.write(dest.toString().getBytes());
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if(fl==FULL_PAGE)
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os.write(" /Fit]".getBytes());
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else {
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os.write(" /FitR ".getBytes());
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os.write(Integer.toString(fl).getBytes());
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os.write(" ".getBytes());
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os.write(Integer.toString(fb).getBytes());
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os.write(" ".getBytes());
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os.write(Integer.toString(fr).getBytes());
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os.write(" ".getBytes());
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os.write(Integer.toString(ft).getBytes());
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os.write("]".getBytes());
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}
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os.write("\n".getBytes());
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}
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// finish off with its footer
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writeEnd(os);
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}
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}
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