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RTF generation library derived from iText-2.1.7. All PDF features and RTF parsing are removed. Code is modernized for Java 8.
/*
* $Id: Image.java 3941 2009-05-28 14:52:26Z blowagie $
*
* Copyright 1999, 2000, 2001, 2002 by 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:
* https://github.com/osobolev/rtf-gen
*/
package com.lowagie.text;
import javax.imageio.IIOException;
import javax.imageio.ImageIO;
import javax.imageio.ImageReadParam;
import javax.imageio.ImageReader;
import javax.imageio.stream.ImageInputStream;
import java.awt.image.BufferedImage;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.MalformedURLException;
import java.net.URL;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.Iterator;
/**
* An Image is the representation of a graphic element (JPEG, PNG
* or GIF) that has to be inserted into the document
*
* @see Element
* @see Rectangle
*/
public class Image extends Rectangle {
// static final membervariables
/**
* type of image
*/
public static final int ORIGINAL_NONE = 0;
/**
* type of image
*/
public static final int ORIGINAL_JPEG = 1;
/**
* type of image
*/
public static final int ORIGINAL_PNG = 2;
/**
* type of image
*/
public static final int ORIGINAL_GIF = 3;
/**
* type of image
*/
public static final int ORIGINAL_BMP = 4;
/**
* type of image
*/
public static final int ORIGINAL_WMF = 6;
// member variables
/**
* The URL of the image.
*/
private final URL url;
/**
* Holds value of property originalType.
*/
private final int originalType;
/**
* Holds value of property originalData.
*/
private final byte[] originalData;
/**
* The alignment of the Image.
*/
private int alignment = Element.ALIGN_LEFT;
/**
* Text that can be shown instead of the image.
*/
private String alt;
/**
* This is the width of the image without rotation.
*/
private final float plainWidth;
/**
* This is the width of the image without rotation.
*/
private final float plainHeight;
public Image(URL url, byte[] originalData, int width, int height, int originalType) {
super(width, height);
this.url = url;
this.originalData = originalData;
this.plainWidth = width;
this.plainHeight = height;
this.originalType = originalType;
}
private static final class ImageInfo {
final BufferedImage image;
final int type;
ImageInfo(BufferedImage image, int type) {
this.image = image;
this.type = type;
}
}
private Image(URL url, byte[] originalData, ImageInfo info) {
this(url, originalData, info.image.getWidth(), info.image.getHeight(), info.type);
}
private static ImageInfo readImage(Object input) throws IOException {
try (ImageInputStream iis = ImageIO.createImageInputStream(input)) {
if (iis == null)
throw new IIOException("Can't create an ImageInputStream!");
Iterator readers = ImageIO.getImageReaders(iis);
if (readers.hasNext()) {
ImageReader reader = readers.next();
ImageReadParam param = reader.getDefaultReadParam();
reader.setInput(iis, true, true);
BufferedImage bi;
try {
bi = reader.read(0, param);
} finally {
reader.dispose();
}
String format = reader.getFormatName();
int type;
if ("gif".equalsIgnoreCase(format)) {
type = ORIGINAL_GIF;
} else if ("JPEG".equalsIgnoreCase(format)) {
type = ORIGINAL_JPEG;
} else if ("png".equalsIgnoreCase(format)) {
type = ORIGINAL_PNG;
} else if ("bmp".equalsIgnoreCase(format)) {
type = ORIGINAL_BMP;
} else {
type = ORIGINAL_NONE;
}
return new ImageInfo(bi, type);
} else {
throw new IOException("Cannot detect image format");
}
}
}
/**
* Gets an instance of an Image.
*
* @param url an URL
* @return an Image
* @throws BadElementException
* @throws MalformedURLException
* @throws IOException
*/
public static Image getInstance(URL url) throws MalformedURLException, IOException {
ImageInfo info;
try (InputStream is = url.openStream()) {
info = readImage(is);
}
return new Image(url, null, info);
}
/**
* Gets an instance of an Image.
*
* @param filename a filename
* @return an object of type Gif,Jpeg or
* Png
* @throws BadElementException
* @throws MalformedURLException
* @throws IOException
*/
public static Image getInstance(String filename) throws MalformedURLException, IOException {
Path path = Paths.get(filename);
byte[] data = Files.readAllBytes(path);
ImageInfo info = readImage(new ByteArrayInputStream(data));
return new Image(path.toUri().toURL(), data, info);
}
/**
* gets an instance of an Image
*
* @param imgb raw image date
* @return an Image object
* @throws BadElementException
* @throws MalformedURLException
* @throws IOException
*/
public static Image getInstance(byte[] imgb) throws MalformedURLException, IOException {
ImageInfo info = readImage(new ByteArrayInputStream(imgb));
return new Image(null, imgb, info);
}
// copy constructor
public Image(Image image) {
super(image);
this.url = image.url;
this.originalType = image.originalType;
this.originalData = image.originalData;
this.alignment = image.alignment;
this.alt = image.alt;
this.plainWidth = image.plainWidth;
this.plainHeight = image.plainHeight;
}
/**
* gets an instance of an Image
*
* @param image an Image object
* @return a new Image object
*/
public static Image getInstance(Image image) {
if (image == null)
return null;
return new Image(image);
}
// implementation of the Element interface
/**
* Returns the type.
*
* @return a type
*/
@Override
public int type() {
return IMAGE;
}
/**
* @since iText 2.0.8
* @see com.lowagie.text.Element#isNestable()
*/
@Override
public boolean isNestable() {
return true;
}
// getters and setters
/**
* Gets the String -representation of the reference to the
* image.
*
* @return a String
*/
public URL getUrl() {
return url;
}
/**
* Gets the alignment for the image.
*
* @return a value
*/
public int getAlignment() {
return alignment;
}
/**
* Sets the alignment for the image.
*
* @param alignment the alignment
*/
public void setAlignment(int alignment) {
this.alignment = alignment;
}
/**
* Gets the alternative text for the image.
*
* @return a String
*/
public String getAlt() {
return alt;
}
/**
* Sets the alternative information for the image.
*
* @param alt
* the alternative information
*/
public void setAlt(String alt) {
this.alt = alt;
}
// width and height
/**
* Gets the plain width of the image.
*
* @return a value
*/
public float getPlainWidth() {
return plainWidth;
}
/**
* Gets the plain height of the image.
*
* @return a value
*/
public float getPlainHeight() {
return plainHeight;
}
/**
* Getter for property originalType.
*
* @return Value of property originalType.
*/
public int getOriginalType() {
return this.originalType;
}
/**
* Getter for property originalData.
*
* @return Value of property originalData.
*/
public byte[] getOriginalData() {
return this.originalData;
}
}
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