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iTechSharp/iTextSharp/text/pdf/events/FieldPositioningEvents.cs
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183
iTechSharp/iTextSharp/text/pdf/events/FieldPositioningEvents.cs
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using System;
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using System.IO;
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using System.Collections;
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using iTextSharp.text;
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using iTextSharp.text.pdf;
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/*
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* Copyright 2005 by Bruno Lowagie
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*
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* The contents of this file are subject to the Mozilla Public License Version 1.1
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* (the "License"); you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the License.
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*
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* The Original Code is 'iText, a free JAVA-PDF library'.
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*
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* The Initial Developer of the Original Code is Bruno Lowagie. Portions created by
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* the Initial Developer are Copyright (C) 1999-2005 by Bruno Lowagie.
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* All Rights Reserved.
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* Co-Developer of the code is Paulo Soares. Portions created by the Co-Developer
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* are Copyright (C) 2000-2005 by Paulo Soares. All Rights Reserved.
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*
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* Contributor(s): all the names of the contributors are added in the source code
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* where applicable.
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*
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* Alternatively, the contents of this file may be used under the terms of the
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* LGPL license (the "GNU LIBRARY GENERAL PUBLIC LICENSE"), in which case the
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* provisions of LGPL are applicable instead of those above. If you wish to
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* allow use of your version of this file only under the terms of the LGPL
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* License and not to allow others to use your version of this file under
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* the MPL, indicate your decision by deleting the provisions above and
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* replace them with the notice and other provisions required by the LGPL.
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* If you do not delete the provisions above, a recipient may use your version
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* of this file under either the MPL or the GNU LIBRARY GENERAL PUBLIC LICENSE.
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*
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* This library is free software; you can redistribute it and/or modify it
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* under the terms of the MPL as stated above or under the terms of the GNU
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* Library General Public License as published by the Free Software Foundation;
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* either version 2 of the License, or any later version.
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*
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* This library is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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* FOR A PARTICULAR PURPOSE. See the GNU Library general Public License for more
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* details.
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*
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* If you didn't download this code from the following link, you should check if
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* you aren't using an obsolete version:
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* http://www.lowagie.com/iText/
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*/
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namespace iTextSharp.text.pdf.events {
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/**
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* Class for an index.
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*
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* @author Michael Niedermair
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*/
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public class FieldPositioningEvents : PdfPageEventHelper, IPdfPCellEvent {
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/**
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* Keeps a map with fields that are to be positioned in inGenericTag.
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*/
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protected Hashtable genericChunkFields = new Hashtable();
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/**
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* Keeps the form field that is to be positioned in a cellLayout event.
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*/
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protected PdfFormField cellField = null;
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/**
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* The PdfWriter to use when a field has to added in a cell event.
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*/
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protected PdfWriter fieldWriter = null;
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/**
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* The PdfFormField that is the parent of the field added in a cell event.
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*/
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protected PdfFormField parent = null;
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/** Creates a new event. This constructor will be used if you need to position fields with Chunk objects. */
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public FieldPositioningEvents() {}
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/** Some extra padding that will be taken into account when defining the widget. */
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public float padding;
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/**
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* Add a PdfFormField that has to be tied to a generic Chunk.
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*/
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public void AddField(String text, PdfFormField field) {
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genericChunkFields[text] = field;
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}
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/** Creates a new event. This constructor will be used if you need to position fields with a Cell Event. */
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public FieldPositioningEvents(PdfWriter writer, PdfFormField field) {
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this.cellField = field;
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this.fieldWriter = writer;
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}
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/** Creates a new event. This constructor will be used if you need to position fields with a Cell Event. */
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public FieldPositioningEvents(PdfFormField parent, PdfFormField field) {
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this.cellField = field;
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this.parent = parent;
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}
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/** Creates a new event. This constructor will be used if you need to position fields with a Cell Event.
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* @throws DocumentException
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* @throws IOException*/
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public FieldPositioningEvents(PdfWriter writer, String text) {
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this.fieldWriter = writer;
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TextField tf = new TextField(writer, new Rectangle(0, 0), text);
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tf.FontSize = 14;
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cellField = tf.GetTextField();
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}
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/** Creates a new event. This constructor will be used if you need to position fields with a Cell Event.
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* @throws DocumentException
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* @throws IOException*/
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public FieldPositioningEvents(PdfWriter writer, PdfFormField parent, String text) {
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this.parent = parent;
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TextField tf = new TextField(writer, new Rectangle(0, 0), text);
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tf.FontSize = 14;
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cellField = tf.GetTextField();
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}
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/**
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* @param padding The padding to set.
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*/
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public float Padding {
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set {
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padding = value;
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}
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get {
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return padding;
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}
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}
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/**
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* @param parent The parent to set.
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*/
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public PdfFormField Parent {
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set {
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parent = value;
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}
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get {
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return parent;
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}
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}
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/**
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* @see com.lowagie.text.pdf.PdfPageEvent#onGenericTag(com.lowagie.text.pdf.PdfWriter, com.lowagie.text.Document, com.lowagie.text.Rectangle, java.lang.String)
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*/
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public override void OnGenericTag(PdfWriter writer, Document document,
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Rectangle rect, String text) {
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rect.Bottom = rect.Bottom - 3;
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PdfFormField field = (PdfFormField) genericChunkFields[text];
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if (field == null) {
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TextField tf = new TextField(writer, new Rectangle(rect.GetLeft(padding), rect.GetBottom(padding), rect.GetRight(padding), rect.GetTop(padding)), text);
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tf.FontSize = 14;
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field = tf.GetTextField();
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}
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else {
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field.Put(PdfName.RECT, new PdfRectangle(rect.GetLeft(padding), rect.GetBottom(padding), rect.GetRight(padding), rect.GetTop(padding)));
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}
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if (parent == null)
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writer.AddAnnotation(field);
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else
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parent.AddKid(field);
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}
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/**
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* @see com.lowagie.text.pdf.PdfPCellEvent#cellLayout(com.lowagie.text.pdf.PdfPCell, com.lowagie.text.Rectangle, com.lowagie.text.pdf.PdfContentByte[])
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*/
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public void CellLayout(PdfPCell cell, Rectangle rect, PdfContentByte[] canvases) {
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if (cellField == null || (fieldWriter == null && parent == null)) throw new ArgumentException("You have used the wrong constructor for this FieldPositioningEvents class.");
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cellField.Put(PdfName.RECT, new PdfRectangle(rect.GetLeft(padding), rect.GetBottom(padding), rect.GetRight(padding), rect.GetTop(padding)));
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if (parent == null)
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fieldWriter.AddAnnotation(cellField);
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else
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parent.AddKid(cellField);
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}
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}
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}
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