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iText, a free Java-PDF library
/*
* $Id: Paragraph.java 4784 2011-03-15 08:33:00Z blowagie $
*
* This file is part of the iText (R) project.
* Copyright (c) 1998-2011 1T3XT BVBA
* Authors: Bruno Lowagie, Paulo Soares, et al.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License version 3
* as published by the Free Software Foundation with the addition of the
* following permission added to Section 15 as permitted in Section 7(a):
* FOR ANY PART OF THE COVERED WORK IN WHICH THE COPYRIGHT IS OWNED BY 1T3XT,
* 1T3XT DISCLAIMS THE WARRANTY OF NON INFRINGEMENT OF THIRD PARTY RIGHTS.
*
* This program 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 Affero General Public License for more details.
* You should have received a copy of the GNU Affero General Public License
* along with this program; if not, see http://www.gnu.org/licenses or write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA, 02110-1301 USA, or download the license from the following URL:
* http://itextpdf.com/terms-of-use/
*
* The interactive user interfaces in modified source and object code versions
* of this program must display Appropriate Legal Notices, as required under
* Section 5 of the GNU Affero General Public License.
*
* In accordance with Section 7(b) of the GNU Affero General Public License,
* a covered work must retain the producer line in every PDF that is created
* or manipulated using iText.
*
* You can be released from the requirements of the license by purchasing
* a commercial license. Buying such a license is mandatory as soon as you
* develop commercial activities involving the iText software without
* disclosing the source code of your own applications.
* These activities include: offering paid services to customers as an ASP,
* serving PDFs on the fly in a web application, shipping iText with a closed
* source product.
*
* For more information, please contact iText Software Corp. at this
* address: [email protected]
*/
package com.itextpdf.text;
/**
* A Paragraph is a series of Chunks and/or Phrases.
*
* A Paragraph has the same qualities of a Phrase, but also
* some additional layout-parameters:
*
* - the indentation
*
- the alignment of the text
*
*
* Example:
*
* Paragraph p = new Paragraph("This is a paragraph",
* FontFactory.getFont(FontFactory.HELVETICA, 18, Font.BOLDITALIC, new Color(0, 0, 255)));
*
*
* @see Element
* @see Phrase
* @see ListItem
*/
public class Paragraph extends Phrase {
// constants
private static final long serialVersionUID = 7852314969733375514L;
// membervariables
/** The alignment of the text. */
protected int alignment = Element.ALIGN_UNDEFINED;
/** The text leading that is multiplied by the biggest font size in the line. */
protected float multipliedLeading = 0;
/** The indentation of this paragraph on the left side. */
protected float indentationLeft;
/** The indentation of this paragraph on the right side. */
protected float indentationRight;
/** Holds value of property firstLineIndent. */
private float firstLineIndent = 0;
/** The spacing before the paragraph. */
protected float spacingBefore;
/** The spacing after the paragraph. */
protected float spacingAfter;
/** Holds value of property extraParagraphSpace. */
private float extraParagraphSpace = 0;
/** Does the paragraph has to be kept together on 1 page. */
protected boolean keeptogether = false;
// constructors
/**
* Constructs a Paragraph.
*/
public Paragraph() {
super();
}
/**
* Constructs a Paragraph with a certain leading.
*
* @param leading the leading
*/
public Paragraph(float leading) {
super(leading);
}
/**
* Constructs a Paragraph with a certain Chunk.
*
* @param chunk a Chunk
*/
public Paragraph(Chunk chunk) {
super(chunk);
}
/**
* Constructs a Paragraph with a certain Chunk
* and a certain leading.
*
* @param leading the leading
* @param chunk a Chunk
*/
public Paragraph(float leading, Chunk chunk) {
super(leading, chunk);
}
/**
* Constructs a Paragraph with a certain String.
*
* @param string a String
*/
public Paragraph(String string) {
super(string);
}
/**
* Constructs a Paragraph with a certain String
* and a certain Font.
*
* @param string a String
* @param font a Font
*/
public Paragraph(String string, Font font) {
super(string, font);
}
/**
* Constructs a Paragraph with a certain String
* and a certain leading.
*
* @param leading the leading
* @param string a String
*/
public Paragraph(float leading, String string) {
super(leading, string);
}
/**
* Constructs a Paragraph with a certain leading, String
* and Font.
*
* @param leading the leading
* @param string a String
* @param font a Font
*/
public Paragraph(float leading, String string, Font font) {
super(leading, string, font);
}
/**
* Constructs a Paragraph with a certain Phrase.
*
* @param phrase a Phrase
*/
public Paragraph(Phrase phrase) {
super(phrase);
if (phrase instanceof Paragraph) {
Paragraph p = (Paragraph)phrase;
setAlignment(p.alignment);
setLeading(phrase.getLeading(), p.multipliedLeading);
setIndentationLeft(p.getIndentationLeft());
setIndentationRight(p.getIndentationRight());
setFirstLineIndent(p.getFirstLineIndent());
setSpacingAfter(p.spacingAfter());
setSpacingBefore(p.spacingBefore());
setExtraParagraphSpace(p.getExtraParagraphSpace());
}
}
// implementation of the Element-methods
/**
* Gets the type of the text element.
*
* @return a type
*/
@Override
public int type() {
return Element.PARAGRAPH;
}
// methods
/**
* Adds an Element to the Paragraph.
*
* @param o the element to add.
* @return true is adding the object succeeded
*/
@Override
public boolean add(Element o) {
if (o instanceof List) {
List list = (List) o;
list.setIndentationLeft(list.getIndentationLeft() + indentationLeft);
list.setIndentationRight(indentationRight);
return super.add(list);
}
else if (o instanceof Image) {
super.addSpecial(o);
return true;
}
else if (o instanceof Paragraph) {
super.add(o);
java.util.List chunks = getChunks();
if (!chunks.isEmpty()) {
Chunk tmp = chunks.get(chunks.size() - 1);
super.add(new Chunk("\n", tmp.getFont()));
}
else {
super.add(Chunk.NEWLINE);
}
return true;
}
return super.add(o);
}
// setting the membervariables
/**
* Sets the alignment of this paragraph.
*
* @param alignment the new alignment
*/
public void setAlignment(int alignment) {
this.alignment = alignment;
}
/**
* @see com.itextpdf.text.Phrase#setLeading(float)
*/
@Override
public void setLeading(float fixedLeading) {
this.leading = fixedLeading;
this.multipliedLeading = 0;
}
/**
* Sets the variable leading. The resultant leading will be
* multipliedLeading*maxFontSize where maxFontSize is the
* size of the biggest font in the line.
* @param multipliedLeading the variable leading
*/
public void setMultipliedLeading(float multipliedLeading) {
this.leading = 0;
this.multipliedLeading = multipliedLeading;
}
/**
* Sets the leading fixed and variable. The resultant leading will be
* fixedLeading+multipliedLeading*maxFontSize where maxFontSize is the
* size of the biggest font in the line.
* @param fixedLeading the fixed leading
* @param multipliedLeading the variable leading
*/
public void setLeading(float fixedLeading, float multipliedLeading) {
this.leading = fixedLeading;
this.multipliedLeading = multipliedLeading;
}
/**
* Sets the indentation of this paragraph on the left side.
*
* @param indentation the new indentation
*/
public void setIndentationLeft(float indentation) {
this.indentationLeft = indentation;
}
/**
* Sets the indentation of this paragraph on the right side.
*
* @param indentation the new indentation
*/
public void setIndentationRight(float indentation) {
this.indentationRight = indentation;
}
/**
* Setter for property firstLineIndent.
* @param firstLineIndent New value of property firstLineIndent.
*/
public void setFirstLineIndent(float firstLineIndent) {
this.firstLineIndent = firstLineIndent;
}
/**
* Sets the spacing before this paragraph.
*
* @param spacing the new spacing
*/
public void setSpacingBefore(float spacing) {
this.spacingBefore = spacing;
}
/**
* Sets the spacing after this paragraph.
*
* @param spacing the new spacing
*/
public void setSpacingAfter(float spacing) {
this.spacingAfter = spacing;
}
/**
* Indicates that the paragraph has to be kept together on one page.
*
* @param keeptogether true of the paragraph may not be split over 2 pages
*/
public void setKeepTogether(boolean keeptogether) {
this.keeptogether = keeptogether;
}
/**
* Checks if this paragraph has to be kept together on one page.
*
* @return true if the paragraph may not be split over 2 pages.
*/
public boolean getKeepTogether() {
return keeptogether;
}
// methods to retrieve information
/**
* Gets the alignment of this paragraph.
*
* @return alignment
*/
public int getAlignment() {
return alignment;
}
/**
* Gets the variable leading
* @return the leading
*/
public float getMultipliedLeading() {
return multipliedLeading;
}
/**
* Gets the total leading.
* This method is based on the assumption that the
* font of the Paragraph is the font of all the elements
* that make part of the paragraph. This isn't necessarily
* true.
* @return the total leading (fixed and multiplied)
*/
public float getTotalLeading() {
float m = font == null ?
Font.DEFAULTSIZE * multipliedLeading : font.getCalculatedLeading(multipliedLeading);
if (m > 0 && !hasLeading()) {
return m;
}
return getLeading() + m;
}
/**
* Gets the indentation of this paragraph on the left side.
*
* @return the indentation
*/
public float getIndentationLeft() {
return indentationLeft;
}
/**
* Gets the indentation of this paragraph on the right side.
*
* @return the indentation
*/
public float getIndentationRight() {
return indentationRight;
}
/**
* Getter for property firstLineIndent.
* @return Value of property firstLineIndent.
*/
public float getFirstLineIndent() {
return this.firstLineIndent;
}
/**
* Gets the spacing before this paragraph.
* @return the spacing
* @since 2.1.5
*/
public float getSpacingBefore() {
return spacingBefore;
}
/**
* Gets the spacing after this paragraph.
* @return the spacing
* @since 2.1.5
*/
public float getSpacingAfter() {
return spacingAfter;
}
/**
* Getter for property extraParagraphSpace.
* @return Value of property extraParagraphSpace.
*/
public float getExtraParagraphSpace() {
return this.extraParagraphSpace;
}
/**
* Setter for property extraParagraphSpace.
* @param extraParagraphSpace New value of property extraParagraphSpace.
*/
public void setExtraParagraphSpace(float extraParagraphSpace) {
this.extraParagraphSpace = extraParagraphSpace;
}
// scheduled for removal
/**
* Gets the spacing before this paragraph.
*
* @return the spacing
* @deprecated As of iText 2.1.5, replaced by {@link #getSpacingBefore()},
* scheduled for removal at 2.3.0
*/
@Deprecated
public float spacingBefore() {
return getSpacingBefore();
}
/**
* Gets the spacing after this paragraph.
*
* @return the spacing
* @deprecated As of iText 2.1.5, replaced by {@link #getSpacingAfter()},
* scheduled for removal at 2.3.0
*/
@Deprecated
public float spacingAfter() {
return spacingAfter;
}
}