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/*
Copyright 2014 by Tizra Inc.
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) 1999-2008 by Bruno Lowagie.
All Rights Reserved.
Co-Developer of the code is Paulo Soares. Portions created by the Co-Developer
are Copyright (C) 2000-2008 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.
dgd: com.lowagie.text.pdf.parser
*/
package com.lowagie.text.pdf.parser;
import javax.annotation.Nullable;
import com.lowagie.text.Rectangle;
import com.lowagie.text.pdf.PdfReader;
/**
* @author dgd
*/
public class Word extends ParsedTextImpl {
/**
* Is this an indivisible fragment, because it contained a space or was split from a space-
* containing string. Non-splittable words can be merged (into new non-splittable words).
*/
private final boolean shouldNotSplit;
/**
* If this word or fragment was preceded by a space, or a line break, it should never be merged
* into a preceding word.
*/
private final boolean breakBefore;
/**
* @param text text content
* @param ascent font ascent (e.g. height)
* @param descent How far below the baseline letters go
* @param startPoint first point of the text
* @param endPoint ending offset of text
* @param baseline line along which text is set.
* @param spaceWidth how much space is a space supposed to take.
* @param isCompleteWord word should never be split
* @param breakBefore word starts here, should never combine to the left.
*/
Word(String text, float ascent, float descent, Vector startPoint,
Vector endPoint, Vector baseline, float spaceWidth, boolean isCompleteWord, boolean breakBefore) {
super(text, startPoint, endPoint, baseline, ascent, descent, spaceWidth);
shouldNotSplit = isCompleteWord;
this.breakBefore = breakBefore;
}
/**
* accept a visitor that is assembling text
*
* @param p the assembler that is visiting us.
* @param contextName What is the wrapping markup element name if any
* @see com.lowagie.text.pdf.parser.ParsedTextImpl#accumulate(com.lowagie.text.pdf.parser.TextAssembler, String)
* @see com.lowagie.text.pdf.parser.TextAssemblyBuffer#accumulate(com.lowagie.text.pdf.parser.TextAssembler, String)
*/
@Override
public void accumulate(TextAssembler p, String contextName) {
p.process(this, contextName);
}
/**
* Accept a visitor that is assembling text
* @param p the assembler that is visiting us.
* @see com.lowagie.text.pdf.parser.TextAssemblyBuffer#assemble(com.lowagie.text.pdf.parser.TextAssembler)
* @see com.lowagie.text.pdf.parser.ParsedTextImpl#assemble(com.lowagie.text.pdf.parser.TextAssembler)
*/
@Override
public void assemble(TextAssembler p) {
p.renderText(this);
}
private static String formatPercent(float f) {
return String.format("%.2f%%", f);
}
/**
* Generate markup for this word. send the assembler a strings representing
* a CSS style that will format us nicely.
*
* @param text
* passed in because we may have wanted to alter it, e.g. by
* trimming white space, or filtering characters or something.
* @param reader
* the file reader from which we are extracting
* @param page
* number of the page we are reading text from
* @param assembler
* object to assemble text from fragments and larger strings on a
* page.
* @return markup to represent this one word.
*/
private String wordMarkup(@Nullable String text, PdfReader reader, int page, TextAssembler assembler) {
if (text == null) {
return "";
}
Rectangle mediaBox = reader.getPageSize(page);
Rectangle cropBox = reader.getBoxSize(page, "crop");
text = text.replaceAll("[\u00A0\u202f]", " ").trim();
if (text.length() == 0) {
return text;
}
mediaBox.normalize();
if (cropBox != null) {
cropBox.normalize();
} else {
cropBox = reader.getBoxSize(page, "trim");
if (cropBox != null) {
cropBox.normalize();
} else {
cropBox = mediaBox;
}
}
float xOffset = cropBox.getLeft() - mediaBox.getLeft();
float yOffset = cropBox.getTop() - mediaBox.getTop();
Vector startPoint = getStartPoint();
Vector endPoint = getEndPoint();
float pageWidth = cropBox.getWidth();
float pageHeight = cropBox.getHeight();
float leftPercent = (float) ((startPoint.get(0) - xOffset - mediaBox.getLeft()) / pageWidth * 100.0);
float bottom = endPoint.get(1) + yOffset - getDescent() - mediaBox.getBottom();
float bottomPercent = bottom / pageHeight * 100f;
StringBuilder result = new StringBuilder();
float width = getWidth();
float widthPercent = width / pageWidth * 100.0f;
float height = getAscent();
float heightPercent = height / pageHeight * 100.0f;
String myId = assembler.getWordId();
Rectangle resultRect = new Rectangle(leftPercent, bottomPercent, leftPercent+widthPercent, bottomPercent+heightPercent);
result.append("")
.append(escapeHTML(text)).append(" ");
result.append(" ");
return result.toString();
}
private static String escapeHTML(String s) {
return s.replaceAll("&", "&").replaceAll("<", "<")
.replaceAll(">", ">");
}
/**
* @see com.lowagie.text.pdf.parser.TextAssemblyBuffer#getFinalText(PdfReader,
* int, TextAssembler, boolean)
*/
@Override
public FinalText getFinalText(PdfReader reader, int page,
TextAssembler assembler, boolean useMarkup) {
final String text = getText() == null ? "" : getText();
if (useMarkup) {
return new FinalText(wordMarkup(text, reader, page, assembler));
} else {
final boolean hasSpaceAlready = text.startsWith(" ") || text.endsWith(" ");
String prefixSpace = hasSpaceAlready ? "" : " ";
return new FinalText(prefixSpace + text);
}
}
@Override
public String toString() {
return "[Word: [" + getText() + "] " + getStartPoint() + ", "
+ getEndPoint() + "] lead" + getAscent() + "]";
}
/**
* @see com.lowagie.text.pdf.parser.ParsedTextImpl#shouldNotSplit()
*/
@Override
public boolean shouldNotSplit() {
return shouldNotSplit;
}
/**
* @see com.lowagie.text.pdf.parser.ParsedTextImpl#breakBefore()
*/
@Override
public boolean breakBefore() {
return breakBefore;
}
}
