/* * $Id: PdfContents.java,v 1.26 2002/06/20 13:28:22 blowagie Exp $ * $Name:  $ * * Copyright 1999, 2000, 2001, 2002 Bruno Lowagie * * 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.pdf;import com.lowagie.text.DocWriter;import com.lowagie.text.Document;import com.lowagie.text.Rectangle;import java.io.ByteArrayOutputStream;import java.io.OutputStream;import java.util.zip.DeflaterOutputStream;/** * <CODE>PdfContents</CODE> is a <CODE>PdfStream</CODE> containing the contents (text + graphics) of a <CODE>PdfPage</CODE>. */class PdfContents extends PdfStream {        static final byte SAVESTATE[] = DocWriter.getISOBytes("q\n");    static final byte RESTORESTATE[] = DocWriter.getISOBytes("Q\n");    static final byte ROTATE90[] = DocWriter.getISOBytes("0 1 -1 0 ");    static final byte ROTATE180[] = DocWriter.getISOBytes("-1 0 0 -1 ");    static final byte ROTATE270[] = DocWriter.getISOBytes("0 -1 1 0 ");    static final byte ROTATEFINAL[] = DocWriter.getISOBytes(" cm\n");    // constructor    /** * Constructs a <CODE>PdfContents</CODE>-object, containing text and general graphics. * * @param under the direct content that is under all others * @param content the graphics in a page * @param text the text in a page * @param secondContent the direct content that is over all others * @throws BadPdfFormatException on error */        PdfContents(PdfContentByte under, PdfContentByte content, PdfContentByte text, PdfContentByte secondContent, Rectangle page) throws BadPdfFormatException {        super();        try {            OutputStream out = null;            streamBytes = new ByteArrayOutputStream();            if (Document.compress)            {                compressed = true;                out = new DeflaterOutputStream(streamBytes);            }            else                out = streamBytes;            int rotation = page.getRotation();            switch (rotation) {                case 90:                    out.write(ROTATE90);                    out.write(DocWriter.getISOBytes(ByteBuffer.formatDouble(page.top())));                    out.write(' ');                    out.write('0');                    out.write(ROTATEFINAL);                    break;                case 180:                    out.write(ROTATE180);                    out.write(DocWriter.getISOBytes(ByteBuffer.formatDouble(page.right())));                    out.write(' ');                    out.write(DocWriter.getISOBytes(ByteBuffer.formatDouble(page.top())));                    out.write(ROTATEFINAL);                    break;                case 270:                    out.write(ROTATE270);                    out.write('0');                    out.write(' ');                    out.write(DocWriter.getISOBytes(ByteBuffer.formatDouble(page.right())));                    out.write(ROTATEFINAL);                    break;            }            if (under.size() > 0) {                out.write(SAVESTATE);                under.getInternalBuffer().writeTo(out);                out.write(RESTORESTATE);            }            if (content.size() > 0) {                out.write(SAVESTATE);                content.getInternalBuffer().writeTo(out);                out.write(RESTORESTATE);            }            if (text != null) {                out.write(SAVESTATE);                text.getInternalBuffer().writeTo(out);                out.write(RESTORESTATE);            }            if (secondContent.size() > 0) {                secondContent.getInternalBuffer().writeTo(out);            }            out.close();        }        catch (Exception e) {            throw new BadPdfFormatException(e.getMessage());        }        put(PdfName.LENGTH, new PdfNumber(streamBytes.size()));        if (compressed)            put(PdfName.FILTER, PdfName.FLATEDECODE);    }}