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iText, a free Java-PDF library
/*
* $Id: ElementFactory.java 6457 2014-07-09 14:04:16Z achingarev $
*
* This file is part of the iText (R) project.
* Copyright (c) 1998-2014 iText Group NV
* 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
* ITEXT GROUP. ITEXT GROUP 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.html.simpleparser;
import java.io.File;
import java.io.IOException;
import java.util.HashMap;
import java.util.Map;
import java.util.StringTokenizer;
import com.itextpdf.text.BaseColor;
import com.itextpdf.text.Chunk;
import com.itextpdf.text.DocListener;
import com.itextpdf.text.DocumentException;
import com.itextpdf.text.Font;
import com.itextpdf.text.FontFactory;
import com.itextpdf.text.FontProvider;
import com.itextpdf.text.Image;
import com.itextpdf.text.List;
import com.itextpdf.text.ListItem;
import com.itextpdf.text.Paragraph;
import com.itextpdf.text.html.HtmlTags;
import com.itextpdf.text.html.HtmlUtilities;
import com.itextpdf.text.pdf.BaseFont;
import com.itextpdf.text.pdf.HyphenationAuto;
import com.itextpdf.text.pdf.HyphenationEvent;
import com.itextpdf.text.pdf.draw.LineSeparator;
/**
* Factory that produces iText Element objects,
* based on tags and their properties.
* @author blowagie
* @author psoares
* @since 5.0.6 (renamed)
* @deprecated since 5.5.2
*/
@Deprecated
public class ElementFactory {
/**
* The font provider that will be used to fetch fonts.
* @since iText 5.0 This used to be a FontFactoryImp
*/
private FontProvider provider = FontFactory.getFontImp();
/**
* Creates a new instance of FactoryProperties.
*/
public ElementFactory() {
}
/**
* Setter for the font provider
* @param provider
* @since 5.0.6 renamed from setFontImp
*/
public void setFontProvider(final FontProvider provider) {
this.provider = provider;
}
/**
* Getter for the font provider
* @return provider
* @since 5.0.6 renamed from getFontImp
*/
public FontProvider getFontProvider() {
return provider;
}
/**
* Creates a Font object based on a chain of properties.
* @param chain chain of properties
* @return an iText Font object
*/
public Font getFont(final ChainedProperties chain) {
// [1] font name
String face = chain.getProperty(HtmlTags.FACE);
// try again, under the CSS key.
//ISSUE: If both are present, we always go with face, even if font-family was
// defined more recently in our ChainedProperties. One solution would go like this:
// Map all our supported style attributes to the 'normal' tag name, so we could
// look everything up under that one tag, retrieving the most current value.
if (face == null || face.trim().length() == 0) {
face = chain.getProperty(HtmlTags.FONTFAMILY);
}
// if the font consists of a comma separated list,
// take the first font that is registered
if (face != null) {
StringTokenizer tok = new StringTokenizer(face, ",");
while (tok.hasMoreTokens()) {
face = tok.nextToken().trim();
if (face.startsWith("\""))
face = face.substring(1);
if (face.endsWith("\""))
face = face.substring(0, face.length() - 1);
if (provider.isRegistered(face))
break;
}
}
// [2] encoding
String encoding = chain.getProperty(HtmlTags.ENCODING);
if (encoding == null)
encoding = BaseFont.WINANSI;
// [3] embedded
// [4] font size
String value = chain.getProperty(HtmlTags.SIZE);
float size = 12;
if (value != null)
size = Float.parseFloat(value);
// [5] font style
int style = 0;
// text-decoration
String decoration = chain.getProperty(HtmlTags.TEXTDECORATION);
if (decoration != null && decoration.trim().length() != 0) {
if (HtmlTags.UNDERLINE.equals(decoration)) {
style |= Font.UNDERLINE;
} else if (HtmlTags.LINETHROUGH.equals(decoration)) {
style |= Font.STRIKETHRU;
}
}
// italic
if (chain.hasProperty(HtmlTags.I))
style |= Font.ITALIC;
// bold
if (chain.hasProperty(HtmlTags.B))
style |= Font.BOLD;
// underline
if (chain.hasProperty(HtmlTags.U))
style |= Font.UNDERLINE;
// strikethru
if (chain.hasProperty(HtmlTags.S))
style |= Font.STRIKETHRU;
// [6] Color
BaseColor color = HtmlUtilities.decodeColor(chain.getProperty(HtmlTags.COLOR));
// Get the font object from the provider
return provider.getFont(face, encoding, true, size, style, color);
}
/**
* Creates an iText Chunk
* @param content the content of the Chunk
* @param chain the hierarchy chain
* @return a Chunk
*/
public Chunk createChunk(final String content, final ChainedProperties chain) {
Font font = getFont(chain);
Chunk ck = new Chunk(content, font);
if (chain.hasProperty(HtmlTags.SUB))
ck.setTextRise(-font.getSize() / 2);
else if (chain.hasProperty(HtmlTags.SUP))
ck.setTextRise(font.getSize() / 2);
ck.setHyphenation(getHyphenation(chain));
return ck;
}
/**
* Creates an iText Paragraph object using the properties
* of the different tags and properties in the hierarchy chain.
* @param chain the hierarchy chain
* @return a Paragraph without any content
*/
public Paragraph createParagraph(final ChainedProperties chain) {
Paragraph paragraph = new Paragraph();
updateElement(paragraph, chain);
return paragraph;
}
/**
* Creates an iText Paragraph object using the properties
* of the different tags and properties in the hierarchy chain.
* @param chain the hierarchy chain
* @return a ListItem without any content
*/
public ListItem createListItem(final ChainedProperties chain) {
ListItem item = new ListItem();
updateElement(item, chain);
return item;
}
/**
* Method that does the actual Element creating for
* the createParagraph and createListItem method.
* @param paragraph
* @param chain
*/
protected void updateElement(final Paragraph paragraph, final ChainedProperties chain) {
// Alignment
String value = chain.getProperty(HtmlTags.ALIGN);
paragraph.setAlignment(HtmlUtilities.alignmentValue(value));
// hyphenation
paragraph.setHyphenation(getHyphenation(chain));
// leading
setParagraphLeading(paragraph, chain.getProperty(HtmlTags.LEADING));
// spacing before
value = chain.getProperty(HtmlTags.AFTER);
if (value != null) {
try {
paragraph.setSpacingBefore(Float.parseFloat(value));
} catch (Exception e) {
}
}
// spacing after
value = chain.getProperty(HtmlTags.AFTER);
if (value != null) {
try {
paragraph.setSpacingAfter(Float.parseFloat(value));
} catch (Exception e) {
}
}
// extra paragraph space
value = chain.getProperty(HtmlTags.EXTRAPARASPACE);
if (value != null) {
try {
paragraph.setExtraParagraphSpace(Float.parseFloat(value));
} catch (Exception e) {
}
}
// indentation
value = chain.getProperty(HtmlTags.INDENT);
if (value != null) {
try {
paragraph.setIndentationLeft(Float.parseFloat(value));
} catch (Exception e) {
}
}
}
/**
* Sets the leading of a Paragraph object.
* @param paragraph the Paragraph for which we set the leading
* @param leading the String value of the leading
*/
protected static void setParagraphLeading(final Paragraph paragraph, final String leading) {
// default leading
if (leading == null) {
paragraph.setLeading(0, 1.5f);
return;
}
try {
StringTokenizer tk = new StringTokenizer(leading, " ,");
// absolute leading
String v = tk.nextToken();
float v1 = Float.parseFloat(v);
if (!tk.hasMoreTokens()) {
paragraph.setLeading(v1, 0);
return;
}
// relative leading
v = tk.nextToken();
float v2 = Float.parseFloat(v);
paragraph.setLeading(v1, v2);
} catch (Exception e) {
// default leading
paragraph.setLeading(0, 1.5f);
}
}
/**
* Gets a HyphenationEvent based on the hyphenation entry in
* the hierarchy chain.
* @param chain the hierarchy chain
* @return a HyphenationEvent
* @since 2.1.2
*/
public HyphenationEvent getHyphenation(final ChainedProperties chain) {
String value = chain.getProperty(HtmlTags.HYPHENATION);
// no hyphenation defined
if (value == null || value.length() == 0) {
return null;
}
// language code only
int pos = value.indexOf('_');
if (pos == -1) {
return new HyphenationAuto(value, null, 2, 2);
}
// language and country code
String lang = value.substring(0, pos);
String country = value.substring(pos + 1);
// no leftMin or rightMin
pos = country.indexOf(',');
if (pos == -1) {
return new HyphenationAuto(lang, country, 2, 2);
}
// leftMin and rightMin value
int leftMin;
int rightMin = 2;
value = country.substring(pos + 1);
country = country.substring(0, pos);
pos = value.indexOf(',');
if (pos == -1) {
leftMin = Integer.parseInt(value);
} else {
leftMin = Integer.parseInt(value.substring(0, pos));
rightMin = Integer.parseInt(value.substring(pos + 1));
}
return new HyphenationAuto(lang, country, leftMin, rightMin);
}
/**
* Creates a LineSeparator.
* @param attrs the attributes
* @param offset
* @return a LineSeparator
* @since 5.0.6
*/
public LineSeparator createLineSeparator(final Map attrs, final float offset) {
// line thickness
float lineWidth = 1;
String size = attrs.get(HtmlTags.SIZE);
if (size != null) {
float tmpSize = HtmlUtilities.parseLength(size, HtmlUtilities.DEFAULT_FONT_SIZE);
if (tmpSize > 0)
lineWidth = tmpSize;
}
// width percentage
String width = attrs.get(HtmlTags.WIDTH);
float percentage = 100;
if (width != null) {
float tmpWidth = HtmlUtilities.parseLength(width, HtmlUtilities.DEFAULT_FONT_SIZE);
if (tmpWidth > 0) percentage = tmpWidth;
if (!width.endsWith("%"))
percentage = 100; // Treat a pixel width as 100% for now.
}
// line color
BaseColor lineColor = null;
// alignment
int align = HtmlUtilities.alignmentValue(attrs.get(HtmlTags.ALIGN));
return new LineSeparator(lineWidth, percentage, lineColor, align, offset);
}
/**
* @param src
* @param attrs
* @param chain
* @param document
* @param img_provider
* @param img_store
* @param img_baseurl
* @return the Image
* @throws DocumentException
* @throws IOException
*/
public Image createImage(
String src,
final Map attrs,
final ChainedProperties chain,
final DocListener document,
final ImageProvider img_provider,
final HashMap img_store,
final String img_baseurl) throws DocumentException, IOException {
Image img = null;
// getting the image using an image provider
if (img_provider != null)
img = img_provider.getImage(src, attrs, chain, document);
// getting the image from an image store
if (img == null && img_store != null) {
Image tim = img_store.get(src);
if (tim != null)
img = Image.getInstance(tim);
}
if (img != null)
return img;
// introducing a base url
// relative src references only
if (!src.startsWith("http") && img_baseurl != null) {
src = img_baseurl + src;
}
else if (img == null && !src.startsWith("http")) {
String path = chain.getProperty(HtmlTags.IMAGEPATH);
if (path == null)
path = "";
src = new File(path, src).getPath();
}
img = Image.getInstance(src);
if (img == null)
return null;
float actualFontSize = HtmlUtilities.parseLength(
chain.getProperty(HtmlTags.SIZE),
HtmlUtilities.DEFAULT_FONT_SIZE);
if (actualFontSize <= 0f)
actualFontSize = HtmlUtilities.DEFAULT_FONT_SIZE;
String width = attrs.get(HtmlTags.WIDTH);
float widthInPoints = HtmlUtilities.parseLength(width, actualFontSize);
String height = attrs.get(HtmlTags.HEIGHT);
float heightInPoints = HtmlUtilities.parseLength(height, actualFontSize);
if (widthInPoints > 0 && heightInPoints > 0) {
img.scaleAbsolute(widthInPoints, heightInPoints);
} else if (widthInPoints > 0) {
heightInPoints = img.getHeight() * widthInPoints
/ img.getWidth();
img.scaleAbsolute(widthInPoints, heightInPoints);
} else if (heightInPoints > 0) {
widthInPoints = img.getWidth() * heightInPoints
/ img.getHeight();
img.scaleAbsolute(widthInPoints, heightInPoints);
}
String before = chain.getProperty(HtmlTags.BEFORE);
if (before != null)
img.setSpacingBefore(Float.parseFloat(before));
String after = chain.getProperty(HtmlTags.AFTER);
if (after != null)
img.setSpacingAfter(Float.parseFloat(after));
img.setWidthPercentage(0);
return img;
}
/**
* @param tag
* @param chain
* @return the List
*/
public List createList(final String tag, final ChainedProperties chain) {
List list;
if (HtmlTags.UL.equalsIgnoreCase(tag)) {
list = new List(List.UNORDERED);
list.setListSymbol("\u2022 ");
}
else {
list = new List(List.ORDERED);
}
try{
list.setIndentationLeft(new Float(chain.getProperty(HtmlTags.INDENT)).floatValue());
}catch (Exception e) {
list.setAutoindent(true);
}
return list;
}
}