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/*
* $Id: PdfDestination.java,v 1.22 2002/06/20 13:28:22 blowagie Exp $
* $Name: $
*
* Copyright 1999, 2000, 2001, 2002 Bruno Lowagie
*
*
* 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, 2000, 2001, 2002 by Bruno Lowagie.
* All Rights Reserved.
* Co-Developer of the code is Paulo Soares. Portions created by the Co-Developer
* are Copyright (C) 2000, 2001, 2002 by Paulo Soares. All Rights Reserved.
*
* Contributor(s): all the names of the contributors are added in the source code
* where applicable.
*
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) 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.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
*
* 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.text.pdf;
/**
* A <CODE>PdfColor</CODE> defines a Color (it's a <CODE>PdfArray</CODE> containing 3 values).
*
* @see PdfDictionary
*/
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
/**
* Constructs a new <CODE>PdfDestination</CODE>.
* <P>
* If <VAR>type</VAR> equals <VAR>FITB</VAR>, the bounding box of a page
* will fit the window of the Reader. Otherwise the type will be set to
* <VAR>FIT</VAR> 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 <CODE>PdfDestination</CODE>.
* <P>
* If <VAR>type</VAR> equals <VAR>FITBH</VAR> / <VAR>FITBV</VAR>,
* 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 <VAR>type</VAR> equals <VAR>FITH</VAR>
* or <VAR>FITV</VAR> 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 <VAR>FITH</VAR>.
*
* @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 <CODE>PdfDestination</CODE>.
* <P>
* 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 <VAR>PdfDestination.XYZ</VAR>
* @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 <CODE>PdfDestination</CODE>.
* <P>
* 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));
}
// methods
/**
* Checks if an indirect reference to a page has been added.
*
* @return <CODE>true</CODE> or <CODE>false</CODE>
*/
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;
}
}
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