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iText, a free Java-PDF library
/*
* $Id: StyleSheet.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.util.HashMap;
import java.util.Map;
import java.util.Properties;
import com.itextpdf.text.BaseColor;
import com.itextpdf.text.html.HtmlTags;
import com.itextpdf.text.html.HtmlUtilities;
/**
* Old class to define styles for HTMLWorker.
* We've completely rewritten HTML to PDF functionality; see project XML Worker.
* XML Worker is able to parse CSS files and "style" attribute values.
* @deprecated since 5.5.2
*/
@Deprecated
public class StyleSheet {
/**
* Map storing tags and their corresponding styles.
* @since 5.0.6 (changed HashMap => Map)
*/
protected Map> tagMap = new HashMap>();
/**
* Map storing possible names of the "class" attribute
* and their corresponding styles.
* @since 5.0.6 (changed HashMap => Map)
*/
protected Map> classMap = new HashMap>();
/**
* Creates a new instance of StyleSheet
*/
public StyleSheet() {
}
/**
* Associates a Map containing styles with a tag.
* @param tag the name of the HTML/XML tag
* @param attrs a map containing styles
*/
public void loadTagStyle(String tag, Map attrs) {
tagMap.put(tag.toLowerCase(), attrs);
}
/**
* Adds an extra style key-value pair to the styles Map
* of a specific tag
* @param tag the name of the HTML/XML tag
* @param key the key specifying a specific style
* @param value the value defining the style
*/
public void loadTagStyle(String tag, String key, String value) {
tag = tag.toLowerCase();
Map styles = tagMap.get(tag);
if (styles == null) {
styles = new HashMap();
tagMap.put(tag, styles);
}
styles.put(key, value);
}
/**
* Associates a Map containing styles with a class name.
* @param className the value of the class attribute
* @param attrs a map containing styles
*/
public void loadStyle(String className, HashMap attrs) {
classMap.put(className.toLowerCase(), attrs);
}
/**
* Adds an extra style key-value pair to the styles Map
* of a specific tag
* @param className the name of the HTML/XML tag
* @param key the key specifying a specific style
* @param value the value defining the style
*/
public void loadStyle(String className, String key, String value) {
className = className.toLowerCase();
Map styles = classMap.get(className);
if (styles == null) {
styles = new HashMap();
classMap.put(className, styles);
}
styles.put(key, value);
}
/**
* Resolves the styles based on the tag name and the value
* of the class attribute.
* @param tag the tag that needs to be resolved
* @param attrs existing style map that will be updated
*/
public void applyStyle(String tag, Map attrs) {
// first fetch the styles corresponding with the tag name
Map map = tagMap.get(tag.toLowerCase());
if (map != null) {
// create a new map with properties
Map temp = new HashMap(map);
// override with the existing properties
temp.putAll(attrs);
// update the existing properties
attrs.putAll(temp);
}
// look for the class attribute
String cm = attrs.get(HtmlTags.CLASS);
if (cm == null)
return;
// fetch the styles corresponding with the class attribute
map = classMap.get(cm.toLowerCase());
if (map == null)
return;
// remove the class attribute from the properties
attrs.remove(HtmlTags.CLASS);
// create a map with the styles corresponding with the class value
Map temp = new HashMap(map);
// override with the existing properties
temp.putAll(attrs);
// update the properties
attrs.putAll(temp);
}
/**
* Method contributed by Lubos Strapko
* @param h
* @param chain
* @since 2.1.3
*/
public static void resolveStyleAttribute(Map h, ChainedProperties chain) {
String style = h.get(HtmlTags.STYLE);
if (style == null)
return;
Properties prop = HtmlUtilities.parseAttributes(style);
for (Object element : prop.keySet()) {
String key = (String) element;
if (key.equals(HtmlTags.FONTFAMILY)) {
h.put(HtmlTags.FACE, prop.getProperty(key));
} else if (key.equals(HtmlTags.FONTSIZE)) {
float actualFontSize = HtmlUtilities.parseLength(chain
.getProperty(HtmlTags.SIZE),
HtmlUtilities.DEFAULT_FONT_SIZE);
if (actualFontSize <= 0f)
actualFontSize = HtmlUtilities.DEFAULT_FONT_SIZE;
h.put(HtmlTags.SIZE, Float.toString(HtmlUtilities.parseLength(prop
.getProperty(key), actualFontSize))
+ "pt");
} else if (key.equals(HtmlTags.FONTSTYLE)) {
String ss = prop.getProperty(key).trim().toLowerCase();
if (ss.equals(HtmlTags.ITALIC) || ss.equals(HtmlTags.OBLIQUE))
h.put(HtmlTags.I, null);
} else if (key.equals(HtmlTags.FONTWEIGHT)) {
String ss = prop.getProperty(key).trim().toLowerCase();
if (ss.equals(HtmlTags.BOLD) || ss.equals("700") || ss.equals("800")
|| ss.equals("900"))
h.put(HtmlTags.B, null);
} else if (key.equals(HtmlTags.TEXTDECORATION)) {
String ss = prop.getProperty(key).trim().toLowerCase();
if (ss.equals(HtmlTags.UNDERLINE))
h.put(HtmlTags.U, null);
} else if (key.equals(HtmlTags.COLOR)) {
BaseColor c = HtmlUtilities.decodeColor(prop.getProperty(key));
if (c != null) {
int hh = c.getRGB();
String hs = Integer.toHexString(hh);
hs = "000000" + hs;
hs = "#" + hs.substring(hs.length() - 6);
h.put(HtmlTags.COLOR, hs);
}
} else if (key.equals(HtmlTags.LINEHEIGHT)) {
String ss = prop.getProperty(key).trim();
float actualFontSize = HtmlUtilities.parseLength(chain
.getProperty(HtmlTags.SIZE),
HtmlUtilities.DEFAULT_FONT_SIZE);
if (actualFontSize <= 0f)
actualFontSize = HtmlUtilities.DEFAULT_FONT_SIZE;
float v = HtmlUtilities.parseLength(prop.getProperty(key),
actualFontSize);
if (ss.endsWith("%")) {
h.put(HtmlTags.LEADING, "0," + v / 100);
return;
}
if (HtmlTags.NORMAL.equalsIgnoreCase(ss)) {
h.put(HtmlTags.LEADING, "0,1.5");
return;
}
h.put(HtmlTags.LEADING, v + ",0");
} else if (key.equals(HtmlTags.TEXTALIGN)) {
String ss = prop.getProperty(key).trim().toLowerCase();
h.put(HtmlTags.ALIGN, ss);
} else if (key.equals(HtmlTags.PADDINGLEFT)) {
String ss = prop.getProperty(key).trim().toLowerCase();
h.put(HtmlTags.INDENT, Float.toString(HtmlUtilities.parseLength(ss)));
}
}
}
}