Java Code Examples for com.lowagie.text.Image#getInstance()

/**
 * Demonstrates the alignment method.
 */
@Test
public void main() throws Exception {
	// step 1: creation of a document-object
	Document document = new Document();
	// step 2: creation of a writer
	PdfWriter.getInstance(document, PdfTestBase.getOutputStream("alignment.pdf"));

	// step 3: we open the document
	document.open();

	Image gif = Image.getInstance(PdfTestBase.RESOURCES_DIR + "vonnegut.gif");
	gif.setAlignment(Image.RIGHT);
	Image jpeg = Image.getInstance(PdfTestBase.RESOURCES_DIR + "otsoe.jpg");
	jpeg.setAlignment(Image.MIDDLE);
	Image png = Image.getInstance(PdfTestBase.RESOURCES_DIR + "hitchcock.png");
	png.setAlignment(Image.LEFT);

	document.add(gif);
	document.add(jpeg);
	document.add(png);

	// step 5: we close the document
	document.close();
}
 

public void preProcessPDF(Object document) throws IOException, BadElementException, DocumentException {  
    Document pdf = (Document) document; 
    pdf.setPageSize(PageSize.A3); 
    pdf.open();  
     
    ServletContext servletContext = (ServletContext) FacesContext.getCurrentInstance().getExternalContext().getContext();  
    String logo = servletContext.getRealPath("") + File.separator +"resources" + File.separator + "images" + File.separator +"logo" + File.separator + "logo.png";  
    Image image=Image.getInstance(logo);
    image.scaleAbsolute(100f, 50f);
    pdf.add(image); 
    // add a couple of blank lines
       pdf.add( Chunk.NEWLINE );
       pdf.add( Chunk.NEWLINE );
    Font fontbold = FontFactory.getFont("Times-Roman", 16, Font.BOLD);
    fontbold.setColor(55, 55, 55);;
    pdf.add(new Paragraph("Investment Summary",fontbold));
    // add a couple of blank lines
    pdf.add( Chunk.NEWLINE );
    pdf.add( Chunk.NEWLINE );
}
 

private void writeMemoryInformations(MemoryInformations memoryInformations)
		throws BadElementException, IOException {
	addCell(memoryInformations.getMemoryDetails().replace(" Mo", ' ' + getString("Mo")));
	final long usedPermGen = memoryInformations.getUsedPermGen();
	if (usedPermGen > 0) {
		// perm gen est à 0 sous jrockit
		final long maxPermGen = memoryInformations.getMaxPermGen();
		addCell(getString("Memoire_Perm_Gen") + ':');
		if (maxPermGen > 0) {
			final Phrase permGenPhrase = new Phrase(
					integerFormat.format(usedPermGen / 1024 / 1024) + ' ' + getString("Mo")
							+ DIVIDE + integerFormat.format(maxPermGen / 1024 / 1024) + ' '
							+ getString("Mo") + BAR_SEPARATOR,
					cellFont);
			final Image permGenImage = Image.getInstance(
					Bar.toBarWithAlert(memoryInformations.getUsedPermGenPercentage()), null);
			permGenImage.scalePercent(50);
			permGenPhrase.add(new Chunk(permGenImage, 0, 0));
			currentTable.addCell(permGenPhrase);
		} else {
			addCell(integerFormat.format(usedPermGen / 1024 / 1024) + ' ' + getString("Mo"));
		}
	}
}
 

public void preProcessPDF(Object document) throws IOException, BadElementException, DocumentException {  
    Document pdf = (Document) document;  
    pdf.setPageSize(PageSize.A3);
    pdf.open(); 
    ServletContext servletContext = (ServletContext) FacesContext.getCurrentInstance().getExternalContext().getContext();  
    String logo = servletContext.getRealPath("") + File.separator +"resources" + File.separator + "images" + File.separator +"logo" + File.separator + "logo.png";  
    Image image=Image.getInstance(logo);
    image.scaleAbsolute(100f, 50f);
    pdf.add(image); 
    // add a couple of blank lines
       pdf.add( Chunk.NEWLINE );
       pdf.add( Chunk.NEWLINE );
    Font fontbold = FontFactory.getFont("Times-Roman", 16, Font.BOLD);
    fontbold.setColor(55, 55, 55);;
    pdf.add(new Paragraph("Account Summary",fontbold));
    // add a couple of blank lines
    pdf.add( Chunk.NEWLINE );
    pdf.add( Chunk.NEWLINE );
}
 

public A(java.awt.Image image) {
	try {
		if (image instanceof BufferedImage)
			iBufferedImage = (BufferedImage)image;
		iImage = Image.getInstance(image, Color.WHITE);
	} catch (Exception e) {}
}
 

/**
 * Demonstrates the Transparency functionality.
 */
@Test
public  void main() throws Exception {
	// step 1: creation of a document-object
	Document document = new Document(PageSize.A4, 50, 50, 50, 50);
	// step 2: creation of a writer
	PdfWriter writer = PdfWriter.getInstance(document,PdfTestBase.getOutputStream("softmask.pdf"));
	// step 3: we open the document
	document.open();
	// step 4: content
	PdfContentByte cb = writer.getDirectContent();
	String text = "text ";
	text += text;
	text += text;
	text += text;
	text += text;
	text += text;
	text += text;
	text += text;
	text += text;
	document.add(new Paragraph(text));
	Image img = Image.getInstance(PdfTestBase.RESOURCES_DIR	+ "otsoe.jpg");
	img.setAbsolutePosition(100, 550);
	byte gradient[] = new byte[256];
	for (int k = 0; k < 256; ++k) {
		gradient[k] = (byte) k;
	}
	Image smask = Image.getInstance(256, 1, 1, 8, gradient);
	smask.makeMask();
	img.setImageMask(smask);
	cb.addImage(img);
	cb.sanityCheck();
	// step 5: we close the document
	document.close();
}
 

public void addTextVertical(PdfPCell cell, String text, boolean bold) throws Exception  {
	if (text==null) return;
       if (text.indexOf("<span")>=0)
           text = text.replaceAll("</span>","").replaceAll("<span .*>", "");
       Font font = PdfFont.getFont(bold);
	BaseFont bf = font.getBaseFont();
	float width = bf.getWidthPoint(text, font.getSize());
	PdfTemplate template = iWriter.getDirectContent().createTemplate(2 * font.getSize() + 4, width);
	template.beginText();
	template.setColorFill(Color.BLACK);
	template.setFontAndSize(bf, font.getSize());
	template.setTextMatrix(0, 2);
	template.showText(text);
	template.endText();
	template.setWidth(width);
	template.setHeight(font.getSize() + 2);
	//make an Image object from the template
	Image img = Image.getInstance(template);
	img.setRotationDegrees(270);
	//embed the image in a Chunk
	Chunk ck = new Chunk(img, 0, 0);
	
	if (cell.getPhrase()==null) {
		cell.setPhrase(new Paragraph(ck));
		cell.setVerticalAlignment(Element.ALIGN_MIDDLE);
		cell.setHorizontalAlignment(Element.ALIGN_RIGHT);
	} else {
		cell.getPhrase().add(ck);
	}
}
 

protected void initialize( ) throws BirtException
{
	// choose the layout manager
	reader = new ImageReader( content, context.getSupportedImageFormats( ) );
	int result = reader.read( );
	switch ( result )
	{
		case ImageReader.RESOURCE_UNREACHABLE:
			// display the alt text or prompt object not accessible.
			layout = createAltTextLayout( ImageReader.RESOURCE_UNREACHABLE );
			break;
		case ImageReader.UNSUPPORTED_OBJECTS:
			// display the alt text or prompt unsupported objects.
			layout = createAltTextLayout( ImageReader.UNSUPPORTED_OBJECTS );
			break;
		case ImageReader.OBJECT_LOADED_SUCCESSFULLY:
			//the object is accessible.
			if ( reader.getType( ) == ImageReader.TYPE_IMAGE_OBJECT
					|| reader.getType( ) == ImageReader.TYPE_CONVERTED_SVG_OBJECT )
			{
				try
				{
					imageObject = Image.getInstance( reader.getByteArray( ) );
				}
				catch ( Exception e )
				{
					logger.log( Level.WARNING, e.getLocalizedMessage( ) );
				}
				// unrecognized image formats.
				if ( imageObject == null )
				{
					layout = createAltTextLayout( ImageReader.UNSUPPORTED_OBJECTS );
					break;
				}
			}
			layout = new ConcreteImageLayout( context, parent, content,
					reader.getByteArray( ) );
			break;
	}
}
 

public Image getImage(String path) {
	try {
		URL url = getClass().getResource(path);
		if (url == null) {
			url = Utilities.toURL(path);
		}
		return Image.getInstance(url);
	} catch (Exception e) { // NOSONAR
		log.warn("could not fetch image", e);
		return null;
	}
}
 

/**
 * General Images example
 */
@Test
public void main() throws Exception {

	// step 1: creation of a document-object
	Document document = new Document();

	// step 2:
	// we create a writer that listens to the document
	// and directs a PDF-stream to a file
	PdfWriter.getInstance(document, PdfTestBase.getOutputStream("Images.pdf"));

	// step 3: we open the document
	document.open();

	// step 4:
	document.add(new Paragraph("A picture of my dog: otsoe.jpg"));
	Image jpg = Image.getInstance(PdfTestBase.RESOURCES_DIR + "otsoe.jpg");
	document.add(jpg);
	document.add(new Paragraph("getacro.gif"));
	Image gif = Image.getInstance(PdfTestBase.RESOURCES_DIR + "getacro.gif");
	document.add(gif);
	document.add(new Paragraph("pngnow.png"));
	Image png = Image.getInstance(PdfTestBase.RESOURCES_DIR + "pngnow.png");
	document.add(png);
	document.add(new Paragraph("iText.bmp"));
	Image bmp = Image.getInstance(PdfTestBase.RESOURCES_DIR + "iText.bmp");
	document.add(bmp);
	document.add(new Paragraph("iText.wmf"));
	Image wmf = Image.getInstance(PdfTestBase.RESOURCES_DIR + "iText.wmf");
	document.add(wmf);
	document.add(new Paragraph("iText.tif"));
	Image tiff = Image.getInstance(PdfTestBase.RESOURCES_DIR + "iText.tif");
	document.add(tiff);

	// step 5: we close the document
	document.close();
}
 

/**
 * Adds an image to this Cell.
 *
 * @param i           the image to add
 * @param left        the left border
 * @param right       the right border
 * @param extraHeight extra height to add above image
 * @param alignment   horizontal alignment (constant from Element class)
 * @return the height of the image
 */

private float addImage(Image i, float left, float right, float extraHeight, int alignment) {
    Image image = Image.getInstance(i);
    if (image.getScaledWidth() > right - left) {
        image.scaleToFit(right - left, Float.MAX_VALUE);
    }
    flushCurrentLine();
    if (line == null) {
        line = new PdfLine(left, right, alignment, leading);
    }
    PdfLine imageLine = line;

    // left and right in chunk is relative to the start of the line
    right = right - left;
    left = 0f;

    if ((image.getAlignment() & Image.RIGHT) == Image.RIGHT) {
        left = right - image.getScaledWidth();
    } else if ((image.getAlignment() & Image.MIDDLE) == Image.MIDDLE) {
        left = left + ((right - left - image.getScaledWidth()) / 2f);
    }
    Chunk imageChunk = new Chunk(image, left, 0);
    imageLine.add(new PdfChunk(imageChunk, null));
    addLine(imageLine);
    return imageLine.height();
}
 

/** Gets an <CODE>Image</CODE> with the barcode. A successful call to the method <CODE>generate()</CODE>
 * before calling this method is required.
 * @return the barcode <CODE>Image</CODE>
 * @throws BadElementException on error
 */    
public Image createImage() throws BadElementException {
    if (image == null)
        return null;
    byte g4[] = CCITTG4Encoder.compress(image, width + 2 * ws, height + 2 * ws);
    return Image.getInstance(width + 2 * ws, height + 2 * ws, false, Image.CCITTG4, 0, g4, null);
}
 

private void writeTomcatInformations(List<TomcatInformations> tomcatInformationsList)
		throws BadElementException, IOException {
	for (final TomcatInformations tomcatInformations : tomcatInformationsList) {
		if (tomcatInformations.getRequestCount() <= 0) {
			continue;
		}
		addCell("Tomcat " + tomcatInformations.getName() + ':');
		// rq: on n'affiche pas pour l'instant getCurrentThreadCount
		final int currentThreadsBusy = tomcatInformations.getCurrentThreadsBusy();
		final String equal = " = ";
		final Phrase phrase = new Phrase(getString("busyThreads") + equal
				+ integerFormat.format(currentThreadsBusy) + DIVIDE
				+ integerFormat.format(tomcatInformations.getMaxThreads()) + BAR_SEPARATOR,
				cellFont);
		final Image threadsImage = Image.getInstance(Bar.toBarWithAlert(
				100d * currentThreadsBusy / tomcatInformations.getMaxThreads()), null);
		threadsImage.scalePercent(50);
		phrase.add(new Chunk(threadsImage, 0, 0));

		phrase.add(new Chunk('\n' + getString("bytesReceived") + equal
				+ integerFormat.format(tomcatInformations.getBytesReceived()) + '\n'
				+ getString("bytesSent") + equal
				+ integerFormat.format(tomcatInformations.getBytesSent()) + '\n'
				+ getString("requestCount") + equal
				+ integerFormat.format(tomcatInformations.getRequestCount()) + '\n'
				+ getString("errorCount") + equal
				+ integerFormat.format(tomcatInformations.getErrorCount()) + '\n'
				+ getString("processingTime") + equal
				+ integerFormat.format(tomcatInformations.getProcessingTime()) + '\n'
				+ getString("maxProcessingTime") + equal
				+ integerFormat.format(tomcatInformations.getMaxTime())));
		currentTable.addCell(phrase);
	}
}
 

/** Creates an <CODE>Image</CODE> with the barcode.
 * @param cb the <CODE>PdfContentByte</CODE> to create the <CODE>Image</CODE>. It
 * serves no other use
 * @param barColor the color of the bars. It can be <CODE>null</CODE>
 * @param textColor the color of the text. It can be <CODE>null</CODE>
 * @return the <CODE>Image</CODE>
 * @see #placeBarcode(PdfContentByte cb, Color barColor, Color textColor)
 */    
public Image createImageWithBarcode(PdfContentByte cb, Color barColor, Color textColor) {
    try {
        return Image.getInstance(createTemplateWithBarcode(cb, barColor, textColor));
    }
    catch (Exception e) {
        throw new ExceptionConverter(e);
    }
}
 

/**
 * Adds an image to this Cell.
 *
 * @param i the image to add
 * @param left the left border
 * @param right the right border
 * @param extraHeight extra height to add above image
 * @param alignment horizontal alignment (constant from Element class)
 * @return the height of the image
 */

private float addImage(Image i, float left, float right, float extraHeight, int alignment) {
	Image image = Image.getInstance(i);
	if (image.getScaledWidth() > right - left) {
		image.scaleToFit(right - left, Float.MAX_VALUE);
	}
	flushCurrentLine();
	if (line == null) {
		line = new PdfLine(left, right, alignment, leading);
	}
	PdfLine imageLine = line;

	// left and right in chunk is relative to the start of the line
	right = right - left;
	left = 0f;

	if ((image.getAlignment() & Image.RIGHT) == Image.RIGHT) {
		left = right - image.getScaledWidth();
	} else if ((image.getAlignment() & Image.MIDDLE) == Image.MIDDLE) {
		left = left + (right - left - image.getScaledWidth()) / 2f;
	}
	Chunk imageChunk = new Chunk(image, left, 0);
	imageLine.add(new PdfChunk(imageChunk, null));
	addLine(imageLine);
	return imageLine.height();
}
 

private InternalImageProcessorResult processImageFillFrame(String rendererId, DataRenderable renderer) throws JRException
{
	Image image = null;
	
	if (printImage.isUsingCache() && loadedImagesMap.containsKey(rendererId))
	{
		image = loadedImagesMap.get(rendererId);
	}
	else
	{
		try
		{
			image = Image.getInstance(renderer.getData(jasperReportsContext));
			imageTesterPdfContentByte.addImage(image, 10, 0, 0, 10, 0, 0);
		}
		catch (Exception e)
		{
			throw new JRException(e);
		}

		if (printImage.isUsingCache())
		{
			loadedImagesMap.put(rendererId, image);
		}
	}

	switch (printImage.getRotation())
	{
		case LEFT :
		{
			image.scaleAbsolute(availableImageHeight, availableImageWidth);
			image.setRotationDegrees(90);
			break;
		}
		case RIGHT :
		{
			image.scaleAbsolute(availableImageHeight, availableImageWidth);
			image.setRotationDegrees(-90);
			break;
		}
		case UPSIDE_DOWN :
		{
			image.scaleAbsolute(availableImageWidth, availableImageHeight);
			image.setRotationDegrees(180);
			break;
		}
		case NONE :
		default :
		{
			image.scaleAbsolute(availableImageWidth, availableImageHeight);
		}
	}
	
	return 
		new InternalImageProcessorResult(
			new Chunk(image, 0, 0), 
			image.getScaledWidth(), 
			image.getScaledHeight(),
			0,
			0
			);
}
 

/**
    * Reads the pages of an existing PDF file, adds pagenumbers and a watermark.

    */
@Test
   public  void main() throws Exception {
           // we create a reader for a certain document
           PdfReader reader = new PdfReader(PdfTestBase.RESOURCES_DIR +"ChapterSection.pdf");
           int n = reader.getNumberOfPages();
           // we create a stamper that will copy the document to a new file
           PdfStamper stamp = new PdfStamper(reader,PdfTestBase.getOutputStream("watermark_pagenumbers.pdf"));
           // adding some metadata
           HashMap<String, String> moreInfo = new HashMap<String, String>();
           moreInfo.put("Author", "Bruno Lowagie");
           stamp.setMoreInfo(moreInfo);
           // adding content to each page
           int i = 0;
           PdfContentByte under;
           PdfContentByte over;
           Image img = Image.getInstance(PdfTestBase.RESOURCES_DIR +"watermark.jpg");
           BaseFont bf = BaseFont.createFont(BaseFont.HELVETICA, BaseFont.WINANSI, BaseFont.EMBEDDED);
           img.setAbsolutePosition(200, 400);
           while (i < n) {
           	i++;
           	// watermark under the existing page
           	under = stamp.getUnderContent(i);
           	under.addImage(img);
           	// text over the existing page
           	over = stamp.getOverContent(i);
           	over.beginText();
           	over.setFontAndSize(bf, 18);
           	over.setTextMatrix(30, 30);
           	over.showText("page " + i);
           	over.setFontAndSize(bf, 32);
           	over.showTextAligned(Element.ALIGN_LEFT, "DUPLICATE", 230, 430, 45);
           	over.endText();
           }
           // adding an extra page
           stamp.insertPage(1, PageSize.A4);
           over = stamp.getOverContent(1);
       	over.beginText();
       	over.setFontAndSize(bf, 18);
           over.showTextAligned(Element.ALIGN_LEFT, "DUPLICATE OF AN EXISTING PDF DOCUMENT", 30, 600, 0);
           over.endText();
           // adding a page from another document
           PdfReader reader2 = new PdfReader(PdfTestBase.RESOURCES_DIR +"SimpleAnnotations1.pdf");
           under = stamp.getUnderContent(1);
           under.addTemplate(stamp.getImportedPage(reader2, 3), 1, 0, 0, 1, 0, 0);
           // closing PdfStamper will generate the new PDF file
           stamp.close();
   }
 

/**
 * Draws different things into different layers.
 */
@Test
public void main() throws Exception {


	// step 1: creation of a document-object
	Document document = new Document();

	
	// step 2: creation of the writer
	PdfWriter writer = PdfWriter.getInstance(document,	PdfTestBase.getOutputStream("layers.pdf"));

	// step 3: we open the document
	document.open();

	// step 4:

	// high level
	Paragraph p = new Paragraph();
	for (int i = 0; i < 100; i++)
		p.add(new Chunk("Blah blah blah blah blah. "));
	document.add(p);
	Image img = Image.getInstance(PdfTestBase.RESOURCES_DIR
			+ "hitchcock.png");
	img.setAbsolutePosition(100, 500);
	document.add(img);

	// low level
	PdfContentByte cb = writer.getDirectContent();
	PdfContentByte cbu = writer.getDirectContentUnder();
	cb.setRGBColorFill(0xFF, 0xFF, 0xFF);
	cb.circle(250.0f, 500.0f, 50.0f);
	cb.fill();
	cb.sanityCheck();

	cbu.setRGBColorFill(0xFF, 0x00, 0x00);
	cbu.circle(250.0f, 500.0f, 100.0f);
	cbu.fill();
	cbu.sanityCheck();

	// step 5: we close the document
	document.close();
}
 

/**
 * Images example with a complete path to the images.
 */
@Test
public void main() throws Exception {

	// step 1: creation of a document-object
	Document document = new Document();

	// step 2:
	// we create a writer that listens to the document
	// and directs a PDF-stream to a file
	HtmlWriter.getInstance(document, PdfTestBase.getOutputStream("images.html"));

	// step 3: we open the document
	document.open();

	File current = new File(".");
	File resources = new File(current, PdfTestBase.RESOURCES_DIR);

	// step 4:
	document.add(new Paragraph("A picture of my dog: otsoe.jpg"));
	File otsoe = new File(resources, "otsoe.jpg");
	Image jpg = Image.getInstance(new URL("file:///" + otsoe.getAbsolutePath()));
	document.add(jpg);

	document.add(new Paragraph("getacro.gif"));
	File getacro = new File(resources, "getacro.gif");
	Image gif = Image.getInstance(new URL("file:///" + getacro.getAbsolutePath()));
	document.add(gif);

	document.add(new Paragraph("pngnow.png"));
	File pngNow = new File(resources, "pngnow.png");
	Image png = Image.getInstance(new URL("file:///" + pngNow.getAbsolutePath()));
	document.add(png);

	document.add(new Paragraph("iText.bmp"));
	File itextBmp = new File(resources, "iText.bmp");
	Image bmp = Image.getInstance(new URL("file:///" + itextBmp.getAbsolutePath()));
	document.add(bmp);

	document.add(new Paragraph("iText.wmf"));
	File itextWmf = new File(resources, "iText.wmf");
	Image wmf = Image.getInstance(new URL("file:///" + itextWmf.getAbsolutePath()));
	document.add(wmf);

	document.add(new Paragraph("iText.tif"));
	File itextTif = new File(resources, "iText.tif");
	Image tiff = Image.getInstance(new URL("file:///" + itextTif.getAbsolutePath()));
	document.add(tiff);

	// step 5: we close the document
	document.close();
}
 

protected void drawImage( String imageId, byte[] imageData,
		String extension, float imageX, float imageY, float height,
		float width, String helpText, Map params ) throws Exception
{
	// Flash
	if ( FlashFile.isFlash( null, null, extension ) )
	{
		embedFlash( null, imageData, imageX, imageY, height, width,
				helpText, params );
		return;
	}

	// Cached Image
	PdfTemplate template = null;
	if ( imageId != null )
	{
		if ( pageDevice.getImageCache( ).containsKey( imageId ) )
		{
			template = pageDevice.getImageCache( ).get( imageId );
		}
		if ( template != null )
		{
			drawImage( template, imageX, imageY, height, width, helpText );
			return;
		}
	}

	// Not cached yet
	if ( SvgFile.isSvg( null, null, extension ) )
	{
		template = generateTemplateFromSVG( null, imageData, imageX,
				imageY, height, width, helpText );
	}
	else
	{
		// PNG/JPG/BMP... images:
		Image image = Image.getInstance( imageData );
		if ( imageId == null )
		{
			// image without imageId, not able to cache.
			drawImage( image, imageX, imageY, height, width, helpText );
			return;
		}
		template = contentByte.createTemplate( width, height );
		template.addImage( image, width, 0, 0, height, 0, 0 );
	}
	// Cache the image
	if ( imageId != null && template != null )
	{
		pageDevice.getImageCache( ).put( imageId, template );
	}
	if ( template != null )
	{
		drawImage( template, imageX, imageY, height, width, helpText );
	}
}