Package com.lowagie.text.rtf

Source Code of com.lowagie.text.rtf.RtfWriter2

/*
* $Id: RtfWriter2.java 2996 2007-11-20 22:40:36Z hallm $
* $Name$
*
* Copyright 2001, 2002, 2003, 2004 by Mark Hall
*
* 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, 2000, 2001, 2002 by Bruno Lowagie.
* All Rights Reserved.
* Co-Developer of the code is Paulo Soares. Portions created by the Co-Developer
* are Copyright (C) 2000, 2001, 2002 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.
*
* If you didn't download this code from the following link, you should check if
* you aren't using an obsolete version:
* http://www.lowagie.com/iText/
*/

package com.lowagie.text.rtf;

import java.io.IOException;
import java.io.OutputStream;
import java.io.Reader;

import com.lowagie.text.DocWriter;
import com.lowagie.text.Document;
import com.lowagie.text.DocumentException;
import com.lowagie.text.Element;
import com.lowagie.text.HeaderFooter;
import com.lowagie.text.Rectangle;
import com.lowagie.text.rtf.direct.RtfImportMappings;
import com.lowagie.text.rtf.direct.RtfParser;
import com.lowagie.text.rtf.document.RtfDocument;
import com.lowagie.text.rtf.document.RtfDocumentSettings;
import com.lowagie.text.rtf.text.RtfNewPage;

/**
* The RtfWriter allows the creation of rtf documents via the iText system
*
* Version: $Id: RtfWriter2.java 2996 2007-11-20 22:40:36Z hallm $
* @author Mark Hall (mhall@edu.uni-klu.ac.at)
*/
public class RtfWriter2 extends DocWriter {
    /**
     * The RtfDocument this RtfWriter is creating
     */
    private RtfDocument rtfDoc = null;
   
    /**
     * Constructs a new RtfWriter that listens to the specified Document and
     * writes its output to the OutputStream.
     *
     * @param doc The Document that this RtfWriter listens to
     * @param os The OutputStream to write to
     */
    protected RtfWriter2(Document doc, OutputStream os) {
        super(doc, os);
        doc.addDocListener(this);
        rtfDoc = new RtfDocument();
    }

    /**
     * Static method to generate RtfWriters
     *
     * @param doc The Document that this RtfWriter listens to
     * @param os The OutputStream to write to
     * @return The new RtfWriter
     */
    public static RtfWriter2 getInstance(Document doc, OutputStream os) {
        return new RtfWriter2(doc, os);
    }

    /**
     * Sets the header to use
     *
     * @param hf The HeaderFooter to use
     */
    public void setHeader(HeaderFooter hf) {
        this.rtfDoc.getDocumentHeader().setHeader(hf);
    }
   
    /**
     * Resets the header
     */
    public void resetHeader() {
        this.rtfDoc.getDocumentHeader().setHeader(null);
    }
   
    /**
     * Sets the footer to use
     *
     * @param hf The HeaderFooter to use
     */
    public void setFooter(HeaderFooter hf) {
        this.rtfDoc.getDocumentHeader().setFooter(hf);
    }
   
    /**
     * Resets the footer
     */
    public void resetFooter() {
        this.rtfDoc.getDocumentHeader().setFooter(null);
    }

    /**
     * This method is not supported in the RtfWriter
     * @param i Unused
     */
    public void setPageCount(int i) {}
   
    /**
     * This method is not supported in the RtfWriter
     */
    public void resetPageCount() {}

    /**
     * This method is not supported in the RtfWriter
     */
    public void clearTextWrap() {}

    /**
     * Opens the RtfDocument
     * @throws IOException
     */
    public void open() {
      super.open();
        this.rtfDoc.open();
    }
   
    /**
     * Closes the RtfDocument. This causes the document to be written
     * to the specified OutputStream
     */
    public void close() {
        if (open) {
            rtfDoc.writeDocument(os);
            super.close();
            this.rtfDoc = new RtfDocument();
        }
    }

    /**
     * Adds an Element to the Document
     *
     * @param element The element to be added
     * @return <code>false</code>
     * @throws DocumentException
     */
    public boolean add(Element element) throws DocumentException {
        if (pause) {
            return false;
        }
        RtfBasicElement rtfElement = rtfDoc.getMapper().mapElement(element);
        if(rtfElement != null) {
            rtfDoc.add(rtfElement);
            return true;
        } else {
            return false;
        }
    }
   
    /**
     * Adds a page break
     *
     * @return <code>false</code>
     */
    public boolean newPage() {
        rtfDoc.add(new RtfNewPage(rtfDoc));
        return true;
    }

    /**
     * Sets the page margins
     *
     * @param left The left margin
     * @param right The right margin
     * @param top The top margin
     * @param bottom The bottom margin
     * @return <code>false</code>
     */
    public boolean setMargins(float left, float right, float top, float bottom) {
        rtfDoc.getDocumentHeader().getPageSetting().setMarginLeft((int) (left * RtfElement.TWIPS_FACTOR));
        rtfDoc.getDocumentHeader().getPageSetting().setMarginRight((int) (right * RtfElement.TWIPS_FACTOR));
        rtfDoc.getDocumentHeader().getPageSetting().setMarginTop((int) (top * RtfElement.TWIPS_FACTOR));
        rtfDoc.getDocumentHeader().getPageSetting().setMarginBottom((int) (bottom * RtfElement.TWIPS_FACTOR));
        return true;
    }
   
    /**
     * Sets the size of the page
     *
     * @param rect A Rectangle representing the page
     * @return <code>false</code>
     */
    public boolean setPageSize(Rectangle rect) {
        rtfDoc.getDocumentHeader().getPageSetting().setPageSize(rect);
        return true;
    }
   
    /**
     * Whether to automagically generate table of contents entries when
     * adding Chapters or Sections.
     *
     * @param autogenerate Whether to automatically generate TOC entries
     */
    public void setAutogenerateTOCEntries(boolean autogenerate) {
        this.rtfDoc.setAutogenerateTOCEntries(autogenerate);
    }
   
    /**
     * Sets the rtf data cache style to use. Valid values are given in the
     * RtfDataCache class.
     * 
     * @param dataCacheStyle The style to use.
     * @throws DocumentException If data has already been written into the data cache.
     * @throws IOException If the disk cache could not be initialised.
     * @deprecated As of iText 2.0.6 or earlier, replaced by
     * {@link com.lowagie.text.rtf.document.RtfDocumentSettings#setDataCacheStyle(int)} via {@link #getDocumentSettings()}, scheduled for removal at or after 2.1.0
     */
    public void setDataCacheStyle(int dataCacheStyle) {
        this.rtfDoc.getDocumentSettings().setDataCacheStyle(dataCacheStyle);
    }
   
    /**
     * Gets the RtfDocumentSettings that specify how the rtf document is generated.
     *
     * @return The current RtfDocumentSettings.
     */
    public RtfDocumentSettings getDocumentSettings() {
        return this.rtfDoc.getDocumentSettings();
    }
   
    /**
     * Adds the complete RTF document to the current RTF document being generated.
     * It will parse the font and color tables and correct the font and color references
     * so that the imported RTF document retains its formattings.
     *
     * @param documentSource The Reader to read the RTF document from.
     * @throws IOException On errors reading the RTF document.
     * @throws DocumentException On errors adding to this RTF document.
     */
    public void importRtfDocument(Reader documentSource) throws IOException, DocumentException {
      if(!this.open) {
        throw new DocumentException("The document must be open to import RTF documents.");
      }
      RtfParser rtfImport = new RtfParser();
      rtfImport.importRtfDocument(documentSource, this.rtfDoc);
    }
   
    /**
     * Adds a fragment of an RTF document to the current RTF document being generated.
     * Since this fragment doesn't contain font or color tables, all fonts and colors
     * are mapped to the default font and color. If the font and color mappings are
     * known, they can be specified via the mappings parameter.
     *
     * @param documentSource The Reader to read the RTF fragment from.
     * @param mappings The RtfImportMappings that contain font and color mappings to apply to the fragment.
     * @throws IOException On errors reading the RTF fragment.
     * @throws DocumentException On errors adding to this RTF fragment.
     */
    public void importRtfFragment(Reader documentSource, RtfImportMappings mappings) throws IOException, DocumentException {
      if(!this.open) {
        throw new DocumentException("The document must be open to import RTF fragments.");
      }
      RtfParser rtfImport = new RtfParser();
      rtfImport.importRtfFragment(documentSource, this.rtfDoc, mappings);
    }
}
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