using System;
using System.Collections;
using System.util;
using iTextSharp.text;
/*
* $Id: PdfAnnotation.cs,v 1.12 2008/05/24 18:41:23 psoares33 Exp $
*
*
* Copyright 1999, 2000, 2001, 2002 Bruno Lowagie
*
* The contents of this file are subject to the Mozilla Public License Version 1.1
* (the "License"); you may not use this file except in compliance with the License.
* You may obtain a copy of the License at http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the License.
*
* 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.
*
* Alternatively, the contents of this file may be used under the terms of the
* LGPL license (the "GNU LIBRARY GENERAL PUBLIC LICENSE"), in which case the
* provisions of LGPL are applicable instead of those above. If you wish to
* allow use of your version of this file only under the terms of the LGPL
* License and not to allow others to use your version of this file under
* the MPL, indicate your decision by deleting the provisions above and
* replace them with the notice and other provisions required by the LGPL.
* If you do not delete the provisions above, a recipient may use your version
* of this file under either the MPL or the GNU LIBRARY GENERAL PUBLIC LICENSE.
*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the MPL as stated above or under the terms of the GNU
* Library General Public License as published by the Free Software Foundation;
* either version 2 of the License, or 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.
*
* 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/
*/
namespace iTextSharp.text.pdf {
/**
* A PdfAnnotation is a note that is associated with a page.
*
* @see PdfDictionary
*/
public class PdfAnnotation : PdfDictionary {
public static readonly PdfName HIGHLIGHT_NONE = PdfName.N;
public static readonly PdfName HIGHLIGHT_INVERT = PdfName.I;
public static readonly PdfName HIGHLIGHT_OUTLINE = PdfName.O;
public static readonly PdfName HIGHLIGHT_PUSH = PdfName.P;
public static readonly PdfName HIGHLIGHT_TOGGLE = PdfName.T;
public const int FLAGS_INVISIBLE = 1;
public const int FLAGS_HIDDEN = 2;
public const int FLAGS_PRINT = 4;
public const int FLAGS_NOZOOM = 8;
public const int FLAGS_NOROTATE = 16;
public const int FLAGS_NOVIEW = 32;
public const int FLAGS_READONLY = 64;
public const int FLAGS_LOCKED = 128;
public const int FLAGS_TOGGLENOVIEW = 256;
public static readonly PdfName APPEARANCE_NORMAL = PdfName.N;
public static readonly PdfName APPEARANCE_ROLLOVER = PdfName.R;
public static readonly PdfName APPEARANCE_DOWN = PdfName.D;
public static readonly PdfName AA_ENTER = PdfName.E;
public static readonly PdfName AA_EXIT = PdfName.X;
public static readonly PdfName AA_DOWN = PdfName.D;
public static readonly PdfName AA_UP = PdfName.U;
public static readonly PdfName AA_FOCUS = PdfName.FO;
public static readonly PdfName AA_BLUR = PdfName.BL;
public static readonly PdfName AA_JS_KEY = PdfName.K;
public static readonly PdfName AA_JS_FORMAT = PdfName.F;
public static readonly PdfName AA_JS_CHANGE = PdfName.V;
public static readonly PdfName AA_JS_OTHER_CHANGE = PdfName.C;
public const int MARKUP_HIGHLIGHT = 0;
public const int MARKUP_UNDERLINE = 1;
public const int MARKUP_STRIKEOUT = 2;
/** attributevalue */
public const int MARKUP_SQUIGGLY = 3;
protected internal PdfWriter writer;
protected internal PdfIndirectReference reference;
protected internal Hashtable templates;
protected internal bool form = false;
protected internal bool annotation = true;
/** Holds value of property used. */
protected internal bool used = false;
/** Holds value of property placeInPage. */
private int placeInPage = -1;
// constructors
public PdfAnnotation(PdfWriter writer, Rectangle rect) {
this.writer = writer;
if (rect != null)
Put(PdfName.RECT, new PdfRectangle(rect));
}
/**
* Constructs a new PdfAnnotation of subtype text.
*/
public PdfAnnotation(PdfWriter writer, float llx, float lly, float urx, float ury, PdfString title, PdfString content) {
this.writer = writer;
Put(PdfName.SUBTYPE, PdfName.TEXT);
Put(PdfName.T, title);
Put(PdfName.RECT, new PdfRectangle(llx, lly, urx, ury));
Put(PdfName.CONTENTS, content);
}
/**
* Constructs a new PdfAnnotation of subtype link (Action).
*/
public PdfAnnotation(PdfWriter writer, float llx, float lly, float urx, float ury, PdfAction action) {
this.writer = writer;
Put(PdfName.SUBTYPE, PdfName.LINK);
Put(PdfName.RECT, new PdfRectangle(llx, lly, urx, ury));
Put(PdfName.A, action);
Put(PdfName.BORDER, new PdfBorderArray(0, 0, 0));
Put(PdfName.C, new PdfColor(0x00, 0x00, 0xFF));
}
/**
* Creates a screen PdfAnnotation
* @param writer
* @param rect
* @param clipTitle
* @param fs
* @param mimeType
* @param playOnDisplay
* @return a screen PdfAnnotation
* @throws IOException
*/
public static PdfAnnotation CreateScreen(PdfWriter writer, Rectangle rect, String clipTitle, PdfFileSpecification fs,
String mimeType, bool playOnDisplay) {
PdfAnnotation ann = new PdfAnnotation(writer, rect);
ann.Put(PdfName.SUBTYPE, PdfName.SCREEN);
ann.Put (PdfName.F, new PdfNumber(FLAGS_PRINT));
ann.Put(PdfName.TYPE, PdfName.ANNOT);
ann.SetPage();
PdfIndirectReference refi = ann.IndirectReference;
PdfAction action = PdfAction.Rendition(clipTitle,fs,mimeType, refi);
PdfIndirectReference actionRef = writer.AddToBody(action).IndirectReference;
// for play on display add trigger event
if (playOnDisplay)
{
PdfDictionary aa = new PdfDictionary();
aa.Put(new PdfName("PV"), actionRef);
ann.Put(PdfName.AA, aa);
}
ann.Put(PdfName.A, actionRef);
return ann;
}
public PdfIndirectReference IndirectReference {
get {
if (reference == null) {
reference = writer.PdfIndirectReference;
}
return reference;
}
}
public static PdfAnnotation CreateText(PdfWriter writer, Rectangle rect, string title, string contents, bool open, string icon) {
PdfAnnotation annot = new PdfAnnotation(writer, rect);
annot.Put(PdfName.SUBTYPE, PdfName.TEXT);
if (title != null)
annot.Put(PdfName.T, new PdfString(title, PdfObject.TEXT_UNICODE));
if (contents != null)
annot.Put(PdfName.CONTENTS, new PdfString(contents, PdfObject.TEXT_UNICODE));
if (open)
annot.Put(PdfName.OPEN, PdfBoolean.PDFTRUE);
if (icon != null) {
annot.Put(PdfName.NAME, new PdfName(icon));
}
return annot;
}
protected static PdfAnnotation CreateLink(PdfWriter writer, Rectangle rect, PdfName highlight) {
PdfAnnotation annot = new PdfAnnotation(writer, rect);
annot.Put(PdfName.SUBTYPE, PdfName.LINK);
if (!highlight.Equals(HIGHLIGHT_INVERT))
annot.Put(PdfName.H, highlight);
return annot;
}
public static PdfAnnotation CreateLink(PdfWriter writer, Rectangle rect, PdfName highlight, PdfAction action) {
PdfAnnotation annot = CreateLink(writer, rect, highlight);
annot.PutEx(PdfName.A, action);
return annot;
}
public static PdfAnnotation CreateLink(PdfWriter writer, Rectangle rect, PdfName highlight, string namedDestination) {
PdfAnnotation annot = CreateLink(writer, rect, highlight);
annot.Put(PdfName.DEST, new PdfString(namedDestination));
return annot;
}
public static PdfAnnotation CreateLink(PdfWriter writer, Rectangle rect, PdfName highlight, int page, PdfDestination dest) {
PdfAnnotation annot = CreateLink(writer, rect, highlight);
PdfIndirectReference piref = writer.GetPageReference(page);
dest.AddPage(piref);
annot.Put(PdfName.DEST, dest);
return annot;
}
public static PdfAnnotation CreateFreeText(PdfWriter writer, Rectangle rect, string contents, PdfContentByte defaultAppearance) {
PdfAnnotation annot = new PdfAnnotation(writer, rect);
annot.Put(PdfName.SUBTYPE, PdfName.FREETEXT);
annot.Put(PdfName.CONTENTS, new PdfString(contents, PdfObject.TEXT_UNICODE));
annot.DefaultAppearanceString = defaultAppearance;
return annot;
}
public static PdfAnnotation CreateLine(PdfWriter writer, Rectangle rect, string contents, float x1, float y1, float x2, float y2) {
PdfAnnotation annot = new PdfAnnotation(writer, rect);
annot.Put(PdfName.SUBTYPE, PdfName.LINE);
annot.Put(PdfName.CONTENTS, new PdfString(contents, PdfObject.TEXT_UNICODE));
PdfArray array = new PdfArray(new PdfNumber(x1));
array.Add(new PdfNumber(y1));
array.Add(new PdfNumber(x2));
array.Add(new PdfNumber(y2));
annot.Put(PdfName.L, array);
return annot;
}
public static PdfAnnotation CreateSquareCircle(PdfWriter writer, Rectangle rect, string contents, bool square) {
PdfAnnotation annot = new PdfAnnotation(writer, rect);
if (square)
annot.Put(PdfName.SUBTYPE, PdfName.SQUARE);
else
annot.Put(PdfName.SUBTYPE, PdfName.CIRCLE);
annot.Put(PdfName.CONTENTS, new PdfString(contents, PdfObject.TEXT_UNICODE));
return annot;
}
public static PdfAnnotation CreateMarkup(PdfWriter writer, Rectangle rect, string contents, int type, float[] quadPoints) {
PdfAnnotation annot = new PdfAnnotation(writer, rect);
PdfName name = PdfName.HIGHLIGHT;
switch (type) {
case MARKUP_UNDERLINE:
name = PdfName.UNDERLINE;
break;
case MARKUP_STRIKEOUT:
name = PdfName.STRIKEOUT;
break;
case MARKUP_SQUIGGLY:
name = PdfName.SQUIGGLY;
break;
}
annot.Put(PdfName.SUBTYPE, name);
annot.Put(PdfName.CONTENTS, new PdfString(contents, PdfObject.TEXT_UNICODE));
PdfArray array = new PdfArray();
for (int k = 0; k < quadPoints.Length; ++k)
array.Add(new PdfNumber(quadPoints[k]));
annot.Put(PdfName.QUADPOINTS, array);
return annot;
}
public static PdfAnnotation CreateStamp(PdfWriter writer, Rectangle rect, string contents, string name) {
PdfAnnotation annot = new PdfAnnotation(writer, rect);
annot.Put(PdfName.SUBTYPE, PdfName.STAMP);
annot.Put(PdfName.CONTENTS, new PdfString(contents, PdfObject.TEXT_UNICODE));
annot.Put(PdfName.NAME, new PdfName(name));
return annot;
}
public static PdfAnnotation CreateInk(PdfWriter writer, Rectangle rect, string contents, float[][] inkList) {
PdfAnnotation annot = new PdfAnnotation(writer, rect);
annot.Put(PdfName.SUBTYPE, PdfName.INK);
annot.Put(PdfName.CONTENTS, new PdfString(contents, PdfObject.TEXT_UNICODE));
PdfArray outer = new PdfArray();
for (int k = 0; k < inkList.Length; ++k) {
PdfArray inner = new PdfArray();
float[] deep = inkList[k];
for (int j = 0; j < deep.Length; ++j)
inner.Add(new PdfNumber(deep[j]));
outer.Add(inner);
}
annot.Put(PdfName.INKLIST, outer);
return annot;
}
/** Creates a file attachment annotation.
* @param writer the PdfWriter
* @param rect the dimensions in the page of the annotation
* @param contents the file description
* @param fileStore an array with the file. If it's null
* the file will be read from the disk
* @param file the path to the file. It will only be used if
* fileStore is not null
* @param fileDisplay the actual file name stored in the pdf
* @throws IOException on error
* @return the annotation
*/
public static PdfAnnotation CreateFileAttachment(PdfWriter writer, Rectangle rect, String contents, byte[] fileStore, String file, String fileDisplay) {
return CreateFileAttachment(writer, rect, contents, PdfFileSpecification.FileEmbedded(writer, file, fileDisplay, fileStore));
}
/** Creates a file attachment annotation
* @param writer
* @param rect
* @param contents
* @param fs
* @return the annotation
* @throws IOException
*/
public static PdfAnnotation CreateFileAttachment(PdfWriter writer, Rectangle rect, String contents, PdfFileSpecification fs) {
PdfAnnotation annot = new PdfAnnotation(writer, rect);
annot.Put(PdfName.SUBTYPE, PdfName.FILEATTACHMENT);
if (contents != null)
annot.Put(PdfName.CONTENTS, new PdfString(contents, PdfObject.TEXT_UNICODE));
annot.Put(PdfName.FS, fs.Reference);
return annot;
}
public static PdfAnnotation CreatePopup(PdfWriter writer, Rectangle rect, string contents, bool open) {
PdfAnnotation annot = new PdfAnnotation(writer, rect);
annot.Put(PdfName.SUBTYPE, PdfName.POPUP);
if (contents != null)
annot.Put(PdfName.CONTENTS, new PdfString(contents, PdfObject.TEXT_UNICODE));
if (open)
annot.Put(PdfName.OPEN, PdfBoolean.PDFTRUE);
return annot;
}
public PdfContentByte DefaultAppearanceString {
set {
byte[] b = value.InternalBuffer.ToByteArray();
int len = b.Length;
for (int k = 0; k < len; ++k) {
if (b[k] == '\n')
b[k] = 32;
}
Put(PdfName.DA, new PdfString(b));
}
}
public int Flags {
set {
if (value == 0)
Remove(PdfName.F);
else
Put(PdfName.F, new PdfNumber(value));
}
}
public PdfBorderArray Border {
set {
Put(PdfName.BORDER, value);
}
}
public PdfBorderDictionary BorderStyle {
set {
Put(PdfName.BS, value);
}
}
/**
* Sets the annotation's highlighting mode. The values can be
* HIGHLIGHT_NONE, HIGHLIGHT_INVERT,
* HIGHLIGHT_OUTLINE and HIGHLIGHT_PUSH;
* @param highlight the annotation's highlighting mode
*/
public void SetHighlighting(PdfName highlight) {
if (highlight.Equals(HIGHLIGHT_INVERT))
Remove(PdfName.H);
else
Put(PdfName.H, highlight);
}
public void SetAppearance(PdfName ap, PdfTemplate template) {
PdfDictionary dic = (PdfDictionary)Get(PdfName.AP);
if (dic == null)
dic = new PdfDictionary();
dic.Put(ap, template.IndirectReference);
Put(PdfName.AP, dic);
if (!form)
return;
if (templates == null)
templates = new Hashtable();
templates[template] = null;
}
public void SetAppearance(PdfName ap, string state, PdfTemplate template) {
PdfDictionary dicAp = (PdfDictionary)Get(PdfName.AP);
if (dicAp == null)
dicAp = new PdfDictionary();
PdfDictionary dic;
PdfObject obj = dicAp.Get(ap);
if (obj != null && obj.IsDictionary())
dic = (PdfDictionary)obj;
else
dic = new PdfDictionary();
dic.Put(new PdfName(state), template.IndirectReference);
dicAp.Put(ap, dic);
Put(PdfName.AP, dicAp);
if (!form)
return;
if (templates == null)
templates = new Hashtable();
templates[template] = null;
}
public string AppearanceState {
set {
if (value == null) {
Remove(PdfName.AS);
return;
}
Put(PdfName.AS, new PdfName(value));
}
}
public Color Color {
set {
Put(PdfName.C, new PdfColor(value));
}
}
public string Title {
set {
if (value == null) {
Remove(PdfName.T);
return;
}
Put(PdfName.T, new PdfString(value, PdfObject.TEXT_UNICODE));
}
}
public PdfAnnotation Popup {
set {
Put(PdfName.POPUP, value.IndirectReference);
value.Put(PdfName.PARENT, this.IndirectReference);
}
}
public PdfAction Action {
set {
Put(PdfName.A, value);
}
}
public void SetAdditionalActions(PdfName key, PdfAction action) {
PdfDictionary dic;
PdfObject obj = Get(PdfName.AA);
if (obj != null && obj.IsDictionary())
dic = (PdfDictionary)obj;
else
dic = new PdfDictionary();
dic.Put(key, action);
Put(PdfName.AA, dic);
}
internal virtual bool IsUsed() {
return used;
}
public virtual void SetUsed() {
used = true;
}
public Hashtable Templates {
get {
return templates;
}
}
/** Getter for property form.
* @return Value of property form.
*/
public bool IsForm() {
return form;
}
/** Getter for property annotation.
* @return Value of property annotation.
*/
public bool IsAnnotation() {
return annotation;
}
public int Page {
set {
Put(PdfName.P, writer.GetPageReference(value));
}
}
public void SetPage() {
Put(PdfName.P, writer.CurrentPage);
}
/** Getter for property placeInPage.
* @return Value of property placeInPage.
*/
public int PlaceInPage {
get {
return placeInPage;
}
set {
this.placeInPage = value;
}
}
public static PdfAnnotation ShallowDuplicate(PdfAnnotation annot) {
PdfAnnotation dup;
if (annot.IsForm()) {
dup = new PdfFormField(annot.writer);
PdfFormField dupField = (PdfFormField)dup;
PdfFormField srcField = (PdfFormField)annot;
dupField.parent = srcField.parent;
dupField.kids = srcField.kids;
}
else
dup = new PdfAnnotation(annot.writer, null);
dup.Merge(annot);
dup.form = annot.form;
dup.annotation = annot.annotation;
dup.templates = annot.templates;
return dup;
}
public int Rotate {
set {
Put(PdfName.ROTATE, new PdfNumber(value));
}
}
internal PdfDictionary MK {
get {
PdfDictionary mk = (PdfDictionary)Get(PdfName.MK);
if (mk == null) {
mk = new PdfDictionary();
Put(PdfName.MK, mk);
}
return mk;
}
}
public int MKRotation {
set {
MK.Put(PdfName.R, new PdfNumber(value));
}
}
public static PdfArray GetMKColor(Color color) {
PdfArray array = new PdfArray();
int type = ExtendedColor.GetType(color);
switch (type) {
case ExtendedColor.TYPE_GRAY: {
array.Add(new PdfNumber(((GrayColor)color).Gray));
break;
}
case ExtendedColor.TYPE_CMYK: {
CMYKColor cmyk = (CMYKColor)color;
array.Add(new PdfNumber(cmyk.Cyan));
array.Add(new PdfNumber(cmyk.Magenta));
array.Add(new PdfNumber(cmyk.Yellow));
array.Add(new PdfNumber(cmyk.Black));
break;
}
case ExtendedColor.TYPE_SEPARATION:
case ExtendedColor.TYPE_PATTERN:
case ExtendedColor.TYPE_SHADING:
throw new Exception("Separations, patterns and shadings are not allowed in MK dictionary.");
default:
array.Add(new PdfNumber(color.R / 255f));
array.Add(new PdfNumber(color.G / 255f));
array.Add(new PdfNumber(color.B / 255f));
break;
}
return array;
}
public Color MKBorderColor {
set {
if (value == null)
MK.Remove(PdfName.BC);
else
MK.Put(PdfName.BC, GetMKColor(value));
}
}
public Color MKBackgroundColor {
set {
if (value == null)
MK.Remove(PdfName.BG);
else
MK.Put(PdfName.BG, GetMKColor(value));
}
}
public string MKNormalCaption {
set {
MK.Put(PdfName.CA, new PdfString(value, PdfObject.TEXT_UNICODE));
}
}
public string MKRolloverCaption {
set {
MK.Put(PdfName.RC, new PdfString(value, PdfObject.TEXT_UNICODE));
}
}
public string MKAlternateCaption {
set {
MK.Put(PdfName.AC, new PdfString(value, PdfObject.TEXT_UNICODE));
}
}
public PdfTemplate MKNormalIcon {
set {
MK.Put(PdfName.I, value.IndirectReference);
}
}
public PdfTemplate MKRolloverIcon {
set {
MK.Put(PdfName.RI, value.IndirectReference);
}
}
public PdfTemplate MKAlternateIcon {
set {
MK.Put(PdfName.IX, value.IndirectReference);
}
}
public void SetMKIconFit(PdfName scale, PdfName scalingType, float leftoverLeft, float leftoverBottom, bool fitInBounds) {
PdfDictionary dic = new PdfDictionary();
if (!scale.Equals(PdfName.A))
dic.Put(PdfName.SW, scale);
if (!scalingType.Equals(PdfName.P))
dic.Put(PdfName.S, scalingType);
if (leftoverLeft != 0.5f || leftoverBottom != 0.5f) {
PdfArray array = new PdfArray(new PdfNumber(leftoverLeft));
array.Add(new PdfNumber(leftoverBottom));
dic.Put(PdfName.A, array);
}
if (fitInBounds)
dic.Put(PdfName.FB, PdfBoolean.PDFTRUE);
MK.Put(PdfName.IF, dic);
}
public int MKTextPosition {
set {
MK.Put(PdfName.TP, new PdfNumber(value));
}
}
/**
* Sets the layer this annotation belongs to.
* @param layer the layer this annotation belongs to
*/
public IPdfOCG Layer {
set {
Put(PdfName.OC, value.Ref);
}
}
/**
* Sets the name of the annotation.
* With this name the annotation can be identified among
* all the annotations on a page (it has to be unique).
*/
public String Name {
set {
Put(PdfName.NM, new PdfString(value));
}
}
/**
* This class processes links from imported pages so that they may be active. The following example code reads a group
* of files and places them all on the output PDF, four pages in a single page, keeping the links active.
*
* String[] files = new String[] {"input1.pdf", "input2.pdf"};
* String outputFile = "output.pdf";
* int firstPage=1;
* Document document = new Document();
* PdfWriter writer = PdfWriter.GetInstance(document, new FileOutputStream(outputFile));
* document.SetPageSize(PageSize.A4);
* float W = PageSize.A4.GetWidth() / 2;
* float H = PageSize.A4.GetHeight() / 2;
* document.Open();
* PdfContentByte cb = writer.GetDirectContent();
* for (int i = 0; i < files.length; i++) {
* PdfReader currentReader = new PdfReader(files[i]);
* currentReader.ConsolidateNamedDestinations();
* for (int page = 1; page <= currentReader.GetNumberOfPages(); page++) {
* PdfImportedPage importedPage = writer.GetImportedPage(currentReader, page);
* float a = 0.5f;
* float e = (page % 2 == 0) ? W : 0;
* float f = (page % 4 == 1 || page % 4 == 2) ? H : 0;
* ArrayList links = currentReader.GetLinks(page);
* cb.AddTemplate(importedPage, a, 0, 0, a, e, f);
* for (int j = 0; j < links.Size(); j++) {
* PdfAnnotation.PdfImportedLink link = (PdfAnnotation.PdfImportedLink)links.Get(j);
* if (link.IsInternal()) {
* int dPage = link.GetDestinationPage();
* int newDestPage = (dPage-1)/4 + firstPage;
* float ee = (dPage % 2 == 0) ? W : 0;
* float ff = (dPage % 4 == 1 || dPage % 4 == 2) ? H : 0;
* link.SetDestinationPage(newDestPage);
* link.TransformDestination(a, 0, 0, a, ee, ff);
* }
* link.TransformRect(a, 0, 0, a, e, f);
* writer.AddAnnotation(link.CreateAnnotation(writer));
* }
* if (page % 4 == 0)
* document.NewPage();
* }
* if (i < files.length - 1)
* document.NewPage();
* firstPage += (currentReader.GetNumberOfPages()+3)/4;
* }
* document.Close();
*
*/
public class PdfImportedLink {
float llx, lly, urx, ury;
Hashtable parameters;
PdfArray destination = null;
int newPage=0;
internal PdfImportedLink(PdfDictionary annotation) {
parameters = (Hashtable)annotation.hashMap.Clone();
try {
destination = (PdfArray)parameters[PdfName.DEST];
parameters.Remove(PdfName.DEST);
} catch (Exception) {
throw new ArgumentException("You have to consolidate the named destinations of your reader.");
}
if (destination != null) {
destination = new PdfArray(destination);
}
PdfArray rc = (PdfArray)parameters[PdfName.RECT];
parameters.Remove(PdfName.RECT);
llx = rc.GetAsNumber(0).FloatValue;
lly = rc.GetAsNumber(1).FloatValue;
urx = rc.GetAsNumber(2).FloatValue;
ury = rc.GetAsNumber(3).FloatValue;
}
public bool IsInternal() {
return destination != null;
}
public int GetDestinationPage() {
if (!IsInternal()) return 0;
// here destination is something like
// [132 0 R, /XYZ, 29.3898, 731.864502, null]
PdfIndirectReference refi = destination.GetAsIndirectObject(0);
PRIndirectReference pr = (PRIndirectReference) refi;
PdfReader r = pr.Reader;
for (int i = 1; i <= r.NumberOfPages; i++) {
PRIndirectReference pp = r.GetPageOrigRef(i);
if (pp.Generation == pr.Generation && pp.Number == pr.Number) return i;
}
throw new ArgumentException("Page not found.");
}
public void SetDestinationPage(int newPage) {
if (!IsInternal()) throw new ArgumentException("Cannot change destination of external link");
this.newPage=newPage;
}
public void TransformDestination(float a, float b, float c, float d, float e, float f) {
if (!IsInternal()) throw new ArgumentException("Cannot change destination of external link");
if (destination.GetAsName(1).Equals(PdfName.XYZ)) {
float x = destination.GetAsNumber(2).FloatValue;
float y = destination.GetAsNumber(3).FloatValue;
float xx = x * a + y * c + e;
float yy = x * b + y * d + f;
destination.ArrayList[2] = new PdfNumber(xx);
destination.ArrayList[3] = new PdfNumber(yy);
}
}
public void TransformRect(float a, float b, float c, float d, float e, float f) {
float x = llx * a + lly * c + e;
float y = llx * b + lly * d + f;
llx = x;
lly = y;
x = urx * a + ury * c + e;
y = urx * b + ury * d + f;
urx = x;
ury = y;
}
public PdfAnnotation CreateAnnotation(PdfWriter writer) {
PdfAnnotation annotation = new PdfAnnotation(writer, new Rectangle(llx, lly, urx, ury));
if (newPage != 0) {
PdfIndirectReference refi = writer.GetPageReference(newPage);
destination.ArrayList[0] = refi;
}
if (destination != null) annotation.Put(PdfName.DEST, destination);
foreach (object key in parameters.Keys)
annotation.hashMap[key] = parameters[key];
return annotation;
}
}
}
}