239 lines
9.9 KiB
C#
239 lines
9.9 KiB
C#
using System;
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using System.Collections;
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using System.Globalization;
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using System.util;
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using iTextSharp.text;
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using iTextSharp.text.xml;
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using iTextSharp.text.pdf;
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using iTextSharp.text.factories;
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/*
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* $Id: ITextmyHtmlHandler.cs,v 1.9 2008/05/13 11:25:15 psoares33 Exp $
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*
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*
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* Copyright 2001, 2002 by Bruno Lowagie.
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*
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* The contents of this file are subject to the Mozilla Public License Version 1.1
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* (the "License"); you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the License.
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*
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* The Original Code is 'iText, a free JAVA-PDF library'.
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*
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* The Initial Developer of the Original Code is Bruno Lowagie. Portions created by
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* the Initial Developer are Copyright (C) 1999, 2000, 2001, 2002 by Bruno Lowagie.
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* All Rights Reserved.
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* Co-Developer of the code is Paulo Soares. Portions created by the Co-Developer
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* are Copyright (C) 2000, 2001, 2002 by Paulo Soares. All Rights Reserved.
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*
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* Contributor(s): all the names of the contributors are added in the source code
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* where applicable.
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*
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* Alternatively, the contents of this file may be used under the terms of the
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* LGPL license (the "GNU LIBRARY GENERAL PUBLIC LICENSE"), in which case the
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* provisions of LGPL are applicable instead of those above. If you wish to
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* allow use of your version of this file only under the terms of the LGPL
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* License and not to allow others to use your version of this file under
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* the MPL, indicate your decision by deleting the provisions above and
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* replace them with the notice and other provisions required by the LGPL.
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* If you do not delete the provisions above, a recipient may use your version
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* of this file under either the MPL or the GNU LIBRARY GENERAL PUBLIC LICENSE.
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*
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* This library is free software; you can redistribute it and/or modify it
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* under the terms of the MPL as stated above or under the terms of the GNU
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* Library General Public License as published by the Free Software Foundation;
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* either version 2 of the License, or any later version.
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*
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* This library is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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* FOR A PARTICULAR PURPOSE. See the GNU Library general Public License for more
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* details.
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*
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* If you didn't download this code from the following link, you should check if
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* you aren't using an obsolete version:
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* http://www.lowagie.com/iText/
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*/
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namespace iTextSharp.text.html {
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/**
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* The <CODE>Tags</CODE>-class maps several XHTML-tags to iText-objects.
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*/
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public class ITextmyHtmlHandler : ITextHandler {
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/** These are the properties of the body section. */
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private Properties bodyAttributes = new Properties();
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/** This is the status of the table border. */
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private bool tableBorder = false;
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/**
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* Constructs a new SAXiTextHandler that will translate all the events
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* triggered by the parser to actions on the <CODE>Document</CODE>-object.
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*
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* @param document this is the document on which events must be triggered
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*/
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public ITextmyHtmlHandler(IDocListener document) : base(document, new HtmlTagMap()) {
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}
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public ITextmyHtmlHandler(IDocListener document, BaseFont bf) : base(document, new HtmlTagMap(), bf) {
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}
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/**
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* Constructs a new SAXiTextHandler that will translate all the events
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* triggered by the parser to actions on the <CODE>Document</CODE>-object.
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*
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* @param document this is the document on which events must be triggered
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* @param htmlTags a tagmap translating HTML tags to iText tags
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*/
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public ITextmyHtmlHandler(IDocListener document, Hashtable htmlTags) : base(document, htmlTags) {
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}
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/**
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* This method gets called when a start tag is encountered.
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*
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* @param uri the Uniform Resource Identifier
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* @param lname the local name (without prefix), or the empty string if Namespace processing is not being performed.
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* @param name the name of the tag that is encountered
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* @param attrs the list of attributes
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*/
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public override void StartElement(String uri, String lname, String name, Hashtable attrs) {
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//System.err.Println("Start: " + name);
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// super.handleStartingTags is replaced with handleStartingTags
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// suggestion by Vu Ngoc Tan/Hop
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name = name.ToLower(CultureInfo.InvariantCulture);
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if (HtmlTagMap.IsHtml(name)) {
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// we do nothing
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return;
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}
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if (HtmlTagMap.IsHead(name)) {
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// we do nothing
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return;
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}
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if (HtmlTagMap.IsTitle(name)) {
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// we do nothing
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return;
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}
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if (HtmlTagMap.IsMeta(name)) {
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// we look if we can change the body attributes
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String meta = null;
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String content = null;
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if (attrs != null) {
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foreach (String attribute in attrs.Keys) {
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if (Util.EqualsIgnoreCase(attribute, HtmlTags.CONTENT))
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content = (String)attrs[attribute];
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else if (Util.EqualsIgnoreCase(attribute, HtmlTags.NAME))
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meta = (String)attrs[attribute];
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}
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}
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if (meta != null && content != null) {
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bodyAttributes.Add(meta, content);
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}
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return;
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}
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if (HtmlTagMap.IsLink(name)) {
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// we do nothing for the moment, in a later version we could extract the style sheet
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return;
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}
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if (HtmlTagMap.IsBody(name)) {
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// maybe we could extract some info about the document: color, margins,...
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// but that's for a later version...
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XmlPeer peer = new XmlPeer(ElementTags.ITEXT, name);
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peer.AddAlias(ElementTags.TOP, HtmlTags.TOPMARGIN);
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peer.AddAlias(ElementTags.BOTTOM, HtmlTags.BOTTOMMARGIN);
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peer.AddAlias(ElementTags.RIGHT, HtmlTags.RIGHTMARGIN);
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peer.AddAlias(ElementTags.LEFT, HtmlTags.LEFTMARGIN);
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bodyAttributes.AddAll(peer.GetAttributes(attrs));
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HandleStartingTags(peer.Tag, bodyAttributes);
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return;
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}
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if (myTags.ContainsKey(name)) {
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XmlPeer peer = (XmlPeer) myTags[name];
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if (ElementTags.TABLE.Equals(peer.Tag) || ElementTags.CELL.Equals(peer.Tag)) {
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Properties p = peer.GetAttributes(attrs);
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String value;
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if (ElementTags.TABLE.Equals(peer.Tag) && (value = p[ElementTags.BORDERWIDTH]) != null) {
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if (float.Parse(value, System.Globalization.NumberFormatInfo.InvariantInfo) > 0) {
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tableBorder = true;
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}
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}
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if (tableBorder) {
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p.Add(ElementTags.LEFT, "true");
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p.Add(ElementTags.RIGHT, "true");
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p.Add(ElementTags.TOP, "true");
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p.Add(ElementTags.BOTTOM, "true");
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}
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HandleStartingTags(peer.Tag, p);
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return;
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}
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HandleStartingTags(peer.Tag, peer.GetAttributes(attrs));
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return;
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}
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Properties attributes = new Properties();
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if (attrs != null) {
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foreach (String attribute in attrs.Keys) {
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attributes.Add(attribute.ToLower(CultureInfo.InvariantCulture), ((String)attrs[attribute]).ToLower(CultureInfo.InvariantCulture));
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}
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}
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HandleStartingTags(name, attributes);
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}
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/**
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* This method gets called when an end tag is encountered.
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*
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* @param uri the Uniform Resource Identifier
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* @param lname the local name (without prefix), or the empty string if Namespace processing is not being performed.
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* @param name the name of the tag that ends
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*/
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public override void EndElement(String uri, String lname, String name) {
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//System.err.Println("End: " + name);
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name = name.ToLower(CultureInfo.InvariantCulture);
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if (ElementTags.PARAGRAPH.Equals(name)) {
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document.Add((IElement) stack.Pop());
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return;
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}
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if (HtmlTagMap.IsHead(name)) {
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// we do nothing
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return;
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}
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if (HtmlTagMap.IsTitle(name)) {
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if (currentChunk != null) {
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bodyAttributes.Add(ElementTags.TITLE, currentChunk.Content);
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}
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return;
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}
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if (HtmlTagMap.IsMeta(name)) {
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// we do nothing
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return;
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}
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if (HtmlTagMap.IsLink(name)) {
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// we do nothing
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return;
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}
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if (HtmlTagMap.IsBody(name)) {
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// we do nothing
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return;
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}
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if (myTags.ContainsKey(name)) {
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XmlPeer peer = (XmlPeer) myTags[name];
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if (ElementTags.TABLE.Equals(peer.Tag)) {
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tableBorder = false;
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}
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base.HandleEndingTags(peer.Tag);
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return;
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}
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// super.handleEndingTags is replaced with handleEndingTags
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// suggestion by Ken Auer
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HandleEndingTags(name);
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}
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}
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} |