com.itextpdf.text.pdf.PdfDestination Maven / Gradle / Ivy
/*
* $Id: caf48059e2d5ccbe1d1c1384e1e163395894f508 $
*
* This file is part of the iText (R) project.
* Copyright (c) 1998-2016 iText Group NV
* Authors: Bruno Lowagie, Paulo Soares, et al.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License version 3
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* following permission added to Section 15 as permitted in Section 7(a):
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*
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* of this program must display Appropriate Legal Notices, as required under
* Section 5 of the GNU Affero General Public License.
*
* In accordance with Section 7(b) of the GNU Affero General Public License,
* a covered work must retain the producer line in every PDF that is created
* or manipulated using iText.
*
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* a commercial license. Buying such a license is mandatory as soon as you
* develop commercial activities involving the iText software without
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*/
package com.itextpdf.text.pdf;
import java.util.StringTokenizer;
/**
* A PdfDestination is a reference to a location in a PDF file.
*/
public class PdfDestination extends PdfArray {
// public static final member-variables
/** This is a possible destination type */
public static final int XYZ = 0;
/** This is a possible destination type */
public static final int FIT = 1;
/** This is a possible destination type */
public static final int FITH = 2;
/** This is a possible destination type */
public static final int FITV = 3;
/** This is a possible destination type */
public static final int FITR = 4;
/** This is a possible destination type */
public static final int FITB = 5;
/** This is a possible destination type */
public static final int FITBH = 6;
/** This is a possible destination type */
public static final int FITBV = 7;
// member variables
/** Is the indirect reference to a page already added? */
private boolean status = false;
// constructors
public PdfDestination(PdfDestination d) {
super(d);
this.status = d.status;
}
/**
* Constructs a new PdfDestination.
*
* If type equals FITB, the bounding box of a page
* will fit the window of the Reader. Otherwise the type will be set to
* FIT so that the entire page will fit to the window.
*
* @param type The destination type
*/
public PdfDestination(int type) {
super();
if (type == FITB) {
add(PdfName.FITB);
}
else {
add(PdfName.FIT);
}
}
/**
* Constructs a new PdfDestination.
*
* If type equals FITBH / FITBV,
* the width / height of the bounding box of a page will fit the window
* of the Reader. The parameter will specify the y / x coordinate of the
* top / left edge of the window. If the type equals FITH
* or FITV the width / height of the entire page will fit
* the window and the parameter will specify the y / x coordinate of the
* top / left edge. In all other cases the type will be set to FITH.
*
* @param type the destination type
* @param parameter a parameter to combined with the destination type
*/
public PdfDestination(int type, float parameter) {
super(new PdfNumber(parameter));
switch(type) {
default:
addFirst(PdfName.FITH);
break;
case FITV:
addFirst(PdfName.FITV);
break;
case FITBH:
addFirst(PdfName.FITBH);
break;
case FITBV:
addFirst(PdfName.FITBV);
}
}
/** Constructs a new PdfDestination.
*
* Display the page, with the coordinates (left, top) positioned
* at the top-left corner of the window and the contents of the page magnified
* by the factor zoom. A negative value for any of the parameters left or top, or a
* zoom value of 0 specifies that the current value of that parameter is to be retained unchanged.
* @param type must be a PdfDestination.XYZ
* @param left the left value. Negative to place a null
* @param top the top value. Negative to place a null
* @param zoom The zoom factor. A value of 0 keeps the current value
*/
public PdfDestination(int type, float left, float top, float zoom) {
super(PdfName.XYZ);
if (left < 0)
add(PdfNull.PDFNULL);
else
add(new PdfNumber(left));
if (top < 0)
add(PdfNull.PDFNULL);
else
add(new PdfNumber(top));
add(new PdfNumber(zoom));
}
/** Constructs a new PdfDestination.
*
* Display the page, with its contents magnified just enough
* to fit the rectangle specified by the coordinates left, bottom, right, and top
* entirely within the window both horizontally and vertically. If the required
* horizontal and vertical magnification factors are different, use the smaller of
* the two, centering the rectangle within the window in the other dimension.
*
* @param type must be PdfDestination.FITR
* @param left a parameter
* @param bottom a parameter
* @param right a parameter
* @param top a parameter
* @since iText0.38
*/
public PdfDestination(int type, float left, float bottom, float right, float top) {
super(PdfName.FITR);
add(new PdfNumber(left));
add(new PdfNumber(bottom));
add(new PdfNumber(right));
add(new PdfNumber(top));
}
/**
* Creates a PdfDestination based on a String.
* Valid Strings are for instance the values returned by SimpleNamedDestination:
* "Fit", "XYZ 36 806 0",...
* @param dest a String notation of a destination.
* @since iText 5.0
*/
public PdfDestination(String dest) {
super();
StringTokenizer tokens = new StringTokenizer(dest);
if (tokens.hasMoreTokens()) {
add(new PdfName(tokens.nextToken()));
}
while (tokens.hasMoreTokens()) {
String token = tokens.nextToken();
if ("null".equals(token))
add(new PdfNull());
else {
try {
add(new PdfNumber(token));
} catch (RuntimeException e) {
add(new PdfNull());
}
}
}
}
// methods
/**
* Checks if an indirect reference to a page has been added.
*
* @return true or false
*/
public boolean hasPage() {
return status;
}
/** Adds the indirect reference of the destination page.
*
* @param page an indirect reference
* @return true if the page reference was added
*/
public boolean addPage(PdfIndirectReference page) {
if (!status) {
addFirst(page);
status = true;
return true;
}
return false;
}
}