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Diffstat (limited to 'src/main/java/com/lowagie/text/rtf/graphic/RtfImage.java')
| -rw-r--r-- | src/main/java/com/lowagie/text/rtf/graphic/RtfImage.java | 306 |
1 files changed, 306 insertions, 0 deletions
diff --git a/src/main/java/com/lowagie/text/rtf/graphic/RtfImage.java b/src/main/java/com/lowagie/text/rtf/graphic/RtfImage.java new file mode 100644 index 0000000..c0446f8 --- /dev/null +++ b/src/main/java/com/lowagie/text/rtf/graphic/RtfImage.java @@ -0,0 +1,306 @@ +/*
+ * $Id: RtfImage.java,v 1.23 2005/12/24 13:14:28 hallm Exp $
+ * $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.graphic;
+
+import java.io.ByteArrayInputStream;
+import java.io.ByteArrayOutputStream;
+import java.io.IOException;
+import java.io.InputStream;
+
+import com.lowagie.text.DocumentException;
+import com.lowagie.text.Element;
+import com.lowagie.text.Image;
+import com.lowagie.text.pdf.codec.wmf.MetaDo;
+import com.lowagie.text.rtf.RtfElement;
+import com.lowagie.text.rtf.document.RtfDocument;
+import com.lowagie.text.rtf.style.RtfParagraphStyle;
+import com.lowagie.text.rtf.text.RtfParagraph;
+
+
+/**
+ * The RtfImage contains one image. Supported image types are jpeg, png, wmf, bmp.
+ *
+ * @version $Revision: 1.23 $
+ * @author Mark Hall (mhall@edu.uni-klu.ac.at)
+ * @author Paulo Soares
+ */
+public class RtfImage extends RtfElement {
+
+ /**
+ * Constant for the shape/picture group
+ */
+ private static final byte[] PICTURE_GROUP = "\\*\\shppict".getBytes();
+ /**
+ * Constant for a picture
+ */
+ private static final byte[] PICTURE = "\\pict".getBytes();
+ /**
+ * Constant for a jpeg image
+ */
+ private static final byte[] PICTURE_JPEG = "\\jpegblip".getBytes();
+ /**
+ * Constant for a png image
+ */
+ private static final byte[] PICTURE_PNG = "\\pngblip".getBytes();
+ /**
+ * Constant for a bmp image
+ */
+ private static final byte[] PICTURE_BMP = "\\dibitmap0".getBytes();
+ /**
+ * Constant for a wmf image
+ */
+ private static final byte[] PICTURE_WMF = "\\wmetafile8".getBytes();
+ /**
+ * Constant for the picture width
+ */
+ private static final byte[] PICTURE_WIDTH = "\\picw".getBytes();
+ /**
+ * Constant for the picture height
+ */
+ private static final byte[] PICTURE_HEIGHT = "\\pich".getBytes();
+ /**
+ * Constant for the picture width scale
+ */
+ private static final byte[] PICTURE_SCALED_WIDTH = "\\picwgoal".getBytes();
+ /**
+ * Constant for the picture height scale
+ */
+ private static final byte[] PICTURE_SCALED_HEIGHT = "\\pichgoal".getBytes();
+
+ /**
+ * The type of image this is.
+ */
+ private int imageType = Image.ORIGINAL_NONE;
+ /**
+ * The actual image. Already formated for direct inclusion in the rtf document
+ */
+ private byte[] image = new byte[0];
+ /**
+ * The alignment of this picture
+ */
+ private int alignment = Element.ALIGN_LEFT;
+ /**
+ * The width of this picture
+ */
+ private float width = 0;
+ /**
+ * The height of this picutre
+ */
+ private float height = 0;
+ /**
+ * The intended display width of this picture
+ */
+ private float plainWidth = 0;
+ /**
+ * The intended display height of this picture
+ */
+ private float plainHeight = 0;
+ /**
+ * Whether this RtfImage is a top level element and should
+ * be an extra paragraph.
+ */
+ private boolean topLevelElement = false;
+
+ /**
+ * Constructs a RtfImage for an Image.
+ *
+ * @param doc The RtfDocument this RtfImage belongs to
+ * @param image The Image that this RtfImage wraps
+ * @throws DocumentException If an error occured accessing the image content
+ */
+ public RtfImage(RtfDocument doc, Image image) throws DocumentException {
+ super(doc);
+ imageType = image.getOriginalType();
+ if (!(imageType == Image.ORIGINAL_JPEG || imageType == Image.ORIGINAL_BMP
+ || imageType == Image.ORIGINAL_PNG || imageType == Image.ORIGINAL_WMF)) {
+ throw new DocumentException("Only BMP, PNG, WMF and JPEG images are supported by the RTF Writer");
+ }
+ alignment = image.alignment();
+ width = image.width();
+ height = image.height();
+ plainWidth = image.plainWidth();
+ plainHeight = image.plainHeight();
+ this.image = getImage(image);
+ }
+
+ /**
+ * Extracts the image data from the Image. The data is formated for direct inclusion
+ * in a rtf document
+ *
+ * @param image The Image for which to extract the content
+ * @return The image data formated for the rtf document
+ * @throws DocumentException If an error occurs accessing the image content
+ */
+ private byte[] getImage(Image image) throws DocumentException {
+ ByteArrayOutputStream imageTemp = new ByteArrayOutputStream();
+ try {
+ InputStream imageIn;
+ if (imageType == Image.ORIGINAL_BMP) {
+ imageIn = new ByteArrayInputStream(MetaDo.wrapBMP(image));
+ } else {
+ if (image.getOriginalData() == null) {
+ imageIn = image.url().openStream();
+ } else {
+ imageIn = new ByteArrayInputStream(image.getOriginalData());
+ }
+ if (imageType == Image.ORIGINAL_WMF) { //remove the placeable header
+ long skipLength = 22;
+ while(skipLength > 0) {
+ skipLength = skipLength - imageIn.skip(skipLength);
+ }
+ }
+ }
+ int buffer = 0;
+ int count = 0;
+ while((buffer = imageIn.read()) != -1) {
+ String helperStr = Integer.toHexString(buffer);
+ if (helperStr.length() < 2) helperStr = "0" + helperStr;
+ imageTemp.write(helperStr.getBytes());
+ count++;
+ if (count == 64) {
+ imageTemp.write((byte) '\n');
+ count = 0;
+ }
+ }
+ } catch(IOException ioe) {
+ throw new DocumentException(ioe.getMessage());
+ }
+ return imageTemp.toByteArray();
+ }
+
+ /**
+ * Writes the RtfImage content
+ *
+ * @return the RtfImage content
+ */
+ public byte[] write() {
+ ByteArrayOutputStream result = new ByteArrayOutputStream();
+ try {
+ if(this.topLevelElement) {
+ result.write(RtfParagraph.PARAGRAPH_DEFAULTS);
+ }
+ switch(alignment) {
+ case Element.ALIGN_LEFT:
+ result.write(RtfParagraphStyle.ALIGN_LEFT);
+ break;
+ case Element.ALIGN_RIGHT:
+ result.write(RtfParagraphStyle.ALIGN_RIGHT);
+ break;
+ case Element.ALIGN_CENTER:
+ result.write(RtfParagraphStyle.ALIGN_CENTER);
+ break;
+ case Element.ALIGN_JUSTIFIED:
+ result.write(RtfParagraphStyle.ALIGN_JUSTIFY);
+ break;
+ }
+ result.write(OPEN_GROUP);
+ result.write(PICTURE_GROUP);
+ result.write(OPEN_GROUP);
+ result.write(PICTURE);
+ switch(imageType) {
+ case Image.ORIGINAL_JPEG:
+ result.write(PICTURE_JPEG);
+ break;
+ case Image.ORIGINAL_PNG:
+ result.write(PICTURE_PNG);
+ break;
+ case Image.ORIGINAL_WMF:
+ case Image.ORIGINAL_BMP:
+ result.write(PICTURE_WMF);
+ break;
+ }
+ result.write(PICTURE_WIDTH);
+ result.write(intToByteArray((int) width));
+ result.write(PICTURE_HEIGHT);
+ result.write(intToByteArray((int) height));
+ if(width != plainWidth || this.imageType == Image.ORIGINAL_BMP) {
+ result.write(PICTURE_SCALED_WIDTH);
+ result.write(intToByteArray((int) (plainWidth * RtfElement.TWIPS_FACTOR)));
+ }
+ if(height != plainHeight || this.imageType == Image.ORIGINAL_BMP) {
+ result.write(PICTURE_SCALED_HEIGHT);
+ result.write(intToByteArray((int) (plainHeight * RtfElement.TWIPS_FACTOR)));
+ }
+ result.write(DELIMITER);
+ result.write((byte) '\n');
+ result.write(image);
+ result.write(CLOSE_GROUP);
+ result.write(CLOSE_GROUP);
+ if(this.topLevelElement) {
+ result.write(RtfParagraph.PARAGRAPH);
+ result.write(RtfParagraph.PARAGRAPH);
+ }
+ result.write((byte) '\n');
+ } catch(IOException ioe) {
+ ioe.printStackTrace();
+ }
+ return result.toByteArray();
+ }
+
+ /**
+ * Sets the alignment of this RtfImage. Uses the alignments from com.lowagie.text.Element.
+ *
+ * @param alignment The alignment to use.
+ */
+ public void setAlignment(int alignment) {
+ this.alignment = alignment;
+ }
+
+ /**
+ * Set whether this RtfImage should behave like a top level element
+ * and enclose itself in a paragraph.
+ *
+ * @param topLevelElement Whether to behave like a top level element.
+ */
+ public void setTopLevelElement(boolean topLevelElement) {
+ this.topLevelElement = topLevelElement;
+ }
+}
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