Source Code Cross Referenced for FieldPositioningEvents.java in  » PDF » pdf-itext » com » lowagie » text » pdf » events » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » PDF » pdf itext » com.lowagie.text.pdf.events 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         * Copyright 2005 by Bruno Lowagie
003:         *
004:         * The contents of this file are subject to the Mozilla Public License Version 1.1
005:         * (the "License"); you may not use this file except in compliance with the License.
006:         * You may obtain a copy of the License at http://www.mozilla.org/MPL/
007:         *
008:         * Software distributed under the License is distributed on an "AS IS" basis,
009:         * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
010:         * for the specific language governing rights and limitations under the License.
011:         *
012:         * The Original Code is 'iText, a free JAVA-PDF library'.
013:         *
014:         * The Initial Developer of the Original Code is Bruno Lowagie. Portions created by
015:         * the Initial Developer are Copyright (C) 1999-2005 by Bruno Lowagie.
016:         * All Rights Reserved.
017:         * Co-Developer of the code is Paulo Soares. Portions created by the Co-Developer
018:         * are Copyright (C) 2000-2005 by Paulo Soares. All Rights Reserved.
019:         *
020:         * Contributor(s): all the names of the contributors are added in the source code
021:         * where applicable.
022:         *
023:         * Alternatively, the contents of this file may be used under the terms of the
024:         * LGPL license (the "GNU LIBRARY GENERAL PUBLIC LICENSE"), in which case the
025:         * provisions of LGPL are applicable instead of those above.  If you wish to
026:         * allow use of your version of this file only under the terms of the LGPL
027:         * License and not to allow others to use your version of this file under
028:         * the MPL, indicate your decision by deleting the provisions above and
029:         * replace them with the notice and other provisions required by the LGPL.
030:         * If you do not delete the provisions above, a recipient may use your version
031:         * of this file under either the MPL or the GNU LIBRARY GENERAL PUBLIC LICENSE.
032:         *
033:         * This library is free software; you can redistribute it and/or modify it
034:         * under the terms of the MPL as stated above or under the terms of the GNU
035:         * Library General Public License as published by the Free Software Foundation;
036:         * either version 2 of the License, or any later version.
037:         *
038:         * This library is distributed in the hope that it will be useful, but WITHOUT
039:         * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
040:         * FOR A PARTICULAR PURPOSE. See the GNU Library general Public License for more
041:         * details.
042:         *
043:         * If you didn't download this code from the following link, you should check if
044:         * you aren't using an obsolete version:
045:         * http://www.lowagie.com/iText/
046:         */
047:        package com.lowagie.text.pdf.events;
048:
049:        import java.io.IOException;
050:        import java.util.HashMap;
051:
052:        import com.lowagie.text.Document;
053:        import com.lowagie.text.DocumentException;
054:        import com.lowagie.text.ExceptionConverter;
055:        import com.lowagie.text.Rectangle;
056:        import com.lowagie.text.pdf.PdfContentByte;
057:        import com.lowagie.text.pdf.PdfFormField;
058:        import com.lowagie.text.pdf.PdfName;
059:        import com.lowagie.text.pdf.PdfPCell;
060:        import com.lowagie.text.pdf.PdfPCellEvent;
061:        import com.lowagie.text.pdf.PdfPageEventHelper;
062:        import com.lowagie.text.pdf.PdfRectangle;
063:        import com.lowagie.text.pdf.PdfWriter;
064:        import com.lowagie.text.pdf.TextField;
065:
066:        /**
067:         * Class for an index.
068:         * 
069:         * @author Michael Niedermair
070:         */
071:        public class FieldPositioningEvents extends PdfPageEventHelper
072:                implements  PdfPCellEvent {
073:
074:            /**
075:             * Keeps a map with fields that are to be positioned in inGenericTag.
076:             */
077:            protected HashMap genericChunkFields = new HashMap();
078:
079:            /**
080:             * Keeps the form field that is to be positioned in a cellLayout event.
081:             */
082:            protected PdfFormField cellField = null;
083:
084:            /**
085:             * The PdfWriter to use when a field has to added in a cell event. 
086:             */
087:            protected PdfWriter fieldWriter = null;
088:            /**
089:             * The PdfFormField that is the parent of the field added in a cell event. 
090:             */
091:            protected PdfFormField parent = null;
092:
093:            /** Creates a new event. This constructor will be used if you need to position fields with Chunk objects. */
094:            public FieldPositioningEvents() {
095:            }
096:
097:            /** Some extra padding that will be taken into account when defining the widget. */
098:            public float padding;
099:
100:            /**
101:             * Add a PdfFormField that has to be tied to a generic Chunk.
102:             */
103:            public void addField(String text, PdfFormField field) {
104:                genericChunkFields.put(text, field);
105:            }
106:
107:            /** Creates a new event. This constructor will be used if you need to position fields with a Cell Event. */
108:            public FieldPositioningEvents(PdfWriter writer, PdfFormField field) {
109:                this .cellField = field;
110:                this .fieldWriter = writer;
111:            }
112:
113:            /** Creates a new event. This constructor will be used if you need to position fields with a Cell Event. */
114:            public FieldPositioningEvents(PdfFormField parent,
115:                    PdfFormField field) {
116:                this .cellField = field;
117:                this .parent = parent;
118:            }
119:
120:            /** Creates a new event. This constructor will be used if you need to position fields with a Cell Event. 
121:             * @throws DocumentException
122:             * @throws IOException*/
123:            public FieldPositioningEvents(PdfWriter writer, String text)
124:                    throws IOException, DocumentException {
125:                this .fieldWriter = writer;
126:                TextField tf = new TextField(writer, new Rectangle(0, 0), text);
127:                tf.setFontSize(14);
128:                cellField = tf.getTextField();
129:            }
130:
131:            /** Creates a new event. This constructor will be used if you need to position fields with a Cell Event. 
132:             * @throws DocumentException
133:             * @throws IOException*/
134:            public FieldPositioningEvents(PdfWriter writer,
135:                    PdfFormField parent, String text) throws IOException,
136:                    DocumentException {
137:                this .parent = parent;
138:                TextField tf = new TextField(writer, new Rectangle(0, 0), text);
139:                tf.setFontSize(14);
140:                cellField = tf.getTextField();
141:            }
142:
143:            /**
144:             * @param padding The padding to set.
145:             */
146:            public void setPadding(float padding) {
147:                this .padding = padding;
148:            }
149:
150:            /**
151:             * @param parent The parent to set.
152:             */
153:            public void setParent(PdfFormField parent) {
154:                this .parent = parent;
155:            }
156:
157:            /**
158:             * @see com.lowagie.text.pdf.PdfPageEvent#onGenericTag(com.lowagie.text.pdf.PdfWriter, com.lowagie.text.Document, com.lowagie.text.Rectangle, java.lang.String)
159:             */
160:            public void onGenericTag(PdfWriter writer, Document document,
161:                    Rectangle rect, String text) {
162:                rect.setBottom(rect.getBottom() - 3);
163:                PdfFormField field = (PdfFormField) genericChunkFields
164:                        .get(text);
165:                if (field == null) {
166:                    TextField tf = new TextField(writer, new Rectangle(rect
167:                            .getLeft(padding), rect.getBottom(padding), rect
168:                            .getRight(padding), rect.getTop(padding)), text);
169:                    tf.setFontSize(14);
170:                    try {
171:                        field = tf.getTextField();
172:                    } catch (Exception e) {
173:                        throw new ExceptionConverter(e);
174:                    }
175:                } else {
176:                    field.put(PdfName.RECT, new PdfRectangle(rect
177:                            .getLeft(padding), rect.getBottom(padding), rect
178:                            .getRight(padding), rect.getTop(padding)));
179:                }
180:                if (parent == null)
181:                    writer.addAnnotation(field);
182:                else
183:                    parent.addKid(field);
184:            }
185:
186:            /**
187:             * @see com.lowagie.text.pdf.PdfPCellEvent#cellLayout(com.lowagie.text.pdf.PdfPCell, com.lowagie.text.Rectangle, com.lowagie.text.pdf.PdfContentByte[])
188:             */
189:            public void cellLayout(PdfPCell cell, Rectangle rect,
190:                    PdfContentByte[] canvases) {
191:                if (cellField == null
192:                        || (fieldWriter == null && parent == null))
193:                    throw new ExceptionConverter(
194:                            new IllegalArgumentException(
195:                                    "You have used the wrong constructor for this FieldPositioningEvents class."));
196:                cellField.put(PdfName.RECT, new PdfRectangle(rect
197:                        .getLeft(padding), rect.getBottom(padding), rect
198:                        .getRight(padding), rect.getTop(padding)));
199:                if (parent == null)
200:                    fieldWriter.addAnnotation(cellField);
201:                else
202:                    parent.addKid(cellField);
203:            }
204:        }
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