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Diffstat (limited to 'src/main/java/com/lowagie/text/pdf/PdfImage.java')
| -rw-r--r-- | src/main/java/com/lowagie/text/pdf/PdfImage.java | 279 |
1 files changed, 279 insertions, 0 deletions
diff --git a/src/main/java/com/lowagie/text/pdf/PdfImage.java b/src/main/java/com/lowagie/text/pdf/PdfImage.java new file mode 100644 index 0000000..46d737f --- /dev/null +++ b/src/main/java/com/lowagie/text/pdf/PdfImage.java @@ -0,0 +1,279 @@ +/*
+ * $Id: PdfImage.java,v 1.66 2005/11/01 12:27:05 psoares33 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/
+ *
+ * REMARK:
+ * LZW/GIF is covered by a software patent which is owned by Unisys Corporation.
+ * Unisys refuses to license this patent for PDF-related use in software
+ * even when this software is released for free and may be freely distributed.
+ * HOWEVER:
+ * This library doesn't compress or decompress data using the LZW
+ * algorithm, nor does it create or visualize GIF-images in any way;
+ * it only copies parts of an existing GIF file into a PDF file.
+ *
+ * More information about the GIF format can be found in the following documents:
+ * * GRAPHICS INTERCHANGE FORMAT(sm) Version 89a
+ * (c)1987,1988,1989,1990 Copyright CompuServe Incorporated. Columbus, Ohio
+ * * LZW and GIF explained
+ * Steve Blackstock
+ * * http://mistress.informatik.unibw-muenchen.de/
+ * very special thanks to klee@informatik.unibw-muenchen.de for the algorithm
+ * to extract the LZW data from a GIF.
+ */
+
+package com.lowagie.text.pdf;
+
+import com.lowagie.text.Image;
+
+import java.io.ByteArrayOutputStream;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.io.IOException;
+
+/**
+ * <CODE>PdfImage</CODE> is a <CODE>PdfStream</CODE> containing an image-<CODE>Dictionary</CODE> and -stream.
+ */
+
+class PdfImage extends PdfStream {
+
+ static final int TRANSFERSIZE = 4096;
+ // membervariables
+
+ /** This is the <CODE>PdfName</CODE> of the image. */
+ protected PdfName name = null;
+
+ // constructor
+
+ /**
+ * Constructs a <CODE>PdfImage</CODE>-object.
+ *
+ * @param image the <CODE>Image</CODE>-object
+ * @param name the <CODE>PdfName</CODE> for this image
+ * @throws BadPdfFormatException on error
+ */
+
+ public PdfImage(Image image, String name, PdfIndirectReference maskRef) throws BadPdfFormatException {
+ super();
+ this.name = new PdfName(name);
+ put(PdfName.TYPE, PdfName.XOBJECT);
+ put(PdfName.SUBTYPE, PdfName.IMAGE);
+ put(PdfName.WIDTH, new PdfNumber(image.width()));
+ put(PdfName.HEIGHT, new PdfNumber(image.height()));
+ if (image.getLayer() != null)
+ put(PdfName.OC, image.getLayer().getRef());
+ if (image.isMask() && (image.bpc() == 1 || image.bpc() > 0xff))
+ put(PdfName.IMAGEMASK, PdfBoolean.PDFTRUE);
+ if (maskRef != null) {
+ if (image.isSmask())
+ put(PdfName.SMASK, maskRef);
+ else
+ put(PdfName.MASK, maskRef);
+ }
+ if (image.isMask() && image.isInvertMask())
+ put(PdfName.DECODE, new PdfLiteral("[1 0]"));
+ if (image.isInterpolation())
+ put(PdfName.INTERPOLATE, PdfBoolean.PDFTRUE);
+ InputStream is = null;
+ try {
+
+ // Raw Image data
+ if (image.isImgRaw()) {
+ // will also have the CCITT parameters
+ int colorspace = image.colorspace();
+ int transparency[] = image.getTransparency();
+ if (transparency != null && !image.isMask() && maskRef == null) {
+ String s = "[";
+ for (int k = 0; k < transparency.length; ++k)
+ s += transparency[k] + " ";
+ s += "]";
+ put(PdfName.MASK, new PdfLiteral(s));
+ }
+ bytes = image.rawData();
+ put(PdfName.LENGTH, new PdfNumber(bytes.length));
+ int bpc = image.bpc();
+ if (bpc > 0xff) {
+ if (!image.isMask())
+ put(PdfName.COLORSPACE, PdfName.DEVICEGRAY);
+ put(PdfName.BITSPERCOMPONENT, new PdfNumber(1));
+ put(PdfName.FILTER, PdfName.CCITTFAXDECODE);
+ int k = bpc - Image.CCITTG3_1D;
+ PdfDictionary decodeparms = new PdfDictionary();
+ if (k != 0)
+ decodeparms.put(PdfName.K, new PdfNumber(k));
+ if ((colorspace & Image.CCITT_BLACKIS1) != 0)
+ decodeparms.put(PdfName.BLACKIS1, PdfBoolean.PDFTRUE);
+ if ((colorspace & Image.CCITT_ENCODEDBYTEALIGN) != 0)
+ decodeparms.put(PdfName.ENCODEDBYTEALIGN, PdfBoolean.PDFTRUE);
+ if ((colorspace & Image.CCITT_ENDOFLINE) != 0)
+ decodeparms.put(PdfName.ENDOFLINE, PdfBoolean.PDFTRUE);
+ if ((colorspace & Image.CCITT_ENDOFBLOCK) != 0)
+ decodeparms.put(PdfName.ENDOFBLOCK, PdfBoolean.PDFFALSE);
+ decodeparms.put(PdfName.COLUMNS, new PdfNumber(image.width()));
+ decodeparms.put(PdfName.ROWS, new PdfNumber(image.height()));
+ put(PdfName.DECODEPARMS, decodeparms);
+ }
+ else {
+ switch(colorspace) {
+ case 1:
+ put(PdfName.COLORSPACE, PdfName.DEVICEGRAY);
+ if (image.isInverted())
+ put(PdfName.DECODE, new PdfLiteral("[1 0]"));
+ break;
+ case 3:
+ put(PdfName.COLORSPACE, PdfName.DEVICERGB);
+ if (image.isInverted())
+ put(PdfName.DECODE, new PdfLiteral("[1 0 1 0 1 0]"));
+ break;
+ case 4:
+ default:
+ put(PdfName.COLORSPACE, PdfName.DEVICECMYK);
+ if (image.isInverted())
+ put(PdfName.DECODE, new PdfLiteral("[1 0 1 0 1 0 1 0]"));
+ }
+ PdfDictionary additional = image.getAdditional();
+ if (additional != null)
+ putAll(additional);
+ if (image.isMask() && (image.bpc() == 1 || image.bpc() > 8))
+ remove(PdfName.COLORSPACE);
+ put(PdfName.BITSPERCOMPONENT, new PdfNumber(image.bpc()));
+ if (image.isDeflated())
+ put(PdfName.FILTER, PdfName.FLATEDECODE);
+ else {
+ flateCompress();
+ }
+ }
+ return;
+ }
+
+ // GIF, JPEG or PNG
+ String errorID;
+ if (image.rawData() == null){
+ is = image.url().openStream();
+ errorID = image.url().toString();
+ }
+ else{
+ is = new java.io.ByteArrayInputStream(image.rawData());
+ errorID = "Byte array";
+ }
+ switch(image.type()) {
+ case Image.JPEG:
+ put(PdfName.FILTER, PdfName.DCTDECODE);
+ switch(image.colorspace()) {
+ case 1:
+ put(PdfName.COLORSPACE, PdfName.DEVICEGRAY);
+ break;
+ case 3:
+ put(PdfName.COLORSPACE, PdfName.DEVICERGB);
+ break;
+ default:
+ put(PdfName.COLORSPACE, PdfName.DEVICECMYK);
+ if (image.isInverted()) {
+ put(PdfName.DECODE, new PdfLiteral("[1 0 1 0 1 0 1 0]"));
+ }
+ }
+ put(PdfName.BITSPERCOMPONENT, new PdfNumber(8));
+ if (image.rawData() != null){
+ bytes = image.rawData();
+ put(PdfName.LENGTH, new PdfNumber(bytes.length));
+ return;
+ }
+ streamBytes = new ByteArrayOutputStream();
+ transferBytes(is, streamBytes, -1);
+ break;
+ default:
+ throw new BadPdfFormatException(errorID + " is an unknown Image format.");
+ }
+ put(PdfName.LENGTH, new PdfNumber(streamBytes.size()));
+ }
+ catch(IOException ioe) {
+ throw new BadPdfFormatException(ioe.getMessage());
+ }
+ finally {
+ if (is != null) {
+ try{
+ is.close();
+ }
+ catch (Exception ee) {
+ // empty on purpose
+ }
+ }
+ }
+ }
+
+ /**
+ * Returns the <CODE>PdfName</CODE> of the image.
+ *
+ * @return the name
+ */
+
+ public PdfName name() {
+ return name;
+ }
+
+ static void transferBytes(InputStream in, OutputStream out, int len) throws IOException {
+ byte buffer[] = new byte[TRANSFERSIZE];
+ if (len < 0)
+ len = 0x7ffffff;
+ int size;
+ while (len != 0) {
+ size = in.read(buffer, 0, Math.min(len, TRANSFERSIZE));
+ if (size < 0)
+ return;
+ out.write(buffer, 0, size);
+ len -= size;
+ }
+ }
+
+ protected void importAll(PdfImage dup) {
+ name = dup.name;
+ compressed = dup.compressed;
+ streamBytes = dup.streamBytes;
+ bytes = dup.bytes;
+ hashMap = dup.hashMap;
+ }
+}
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