Java Code Examples for com.itextpdf.text.pdf.PdfContentByte#addImage()

void addRotatedImage(PdfContentByte contentByte, Image image, float x, float y, float width, float height, float rotation) throws DocumentException
{
    // Draw image at x,y without rotation
    contentByte.addImage(image, width, 0, 0, height, x, y);

    // Draw image as if the previous image was rotated around its center
    // Image starts out being 1x1 with origin in lower left
    // Move origin to center of image
    AffineTransform A = AffineTransform.getTranslateInstance(-0.5, -0.5);
    // Stretch it to its dimensions
    AffineTransform B = AffineTransform.getScaleInstance(width, height);
    // Rotate it
    AffineTransform C = AffineTransform.getRotateInstance(rotation);
    // Move it to have the same center as above
    AffineTransform D = AffineTransform.getTranslateInstance(x + width/2, y + height/2);
    // Concatenate
    AffineTransform M = (AffineTransform) A.clone();
    M.preConcatenate(B);
    M.preConcatenate(C);
    M.preConcatenate(D);
    //Draw
    contentByte.addImage(image, M);
}
 

static byte[] createRotatedImagePdf() throws DocumentException, IOException
{
    ByteArrayOutputStream baos = new ByteArrayOutputStream();

    Document document = new Document();
    PdfWriter writer = PdfWriter.getInstance(document, baos);
    document.open();

    PdfContentByte directContent = writer.getDirectContent();

    BufferedImage bim = new BufferedImage(1000, 250, BufferedImage.TYPE_INT_RGB);
    Graphics2D g2d = bim.createGraphics();
    g2d.setColor(Color.BLUE);
    g2d.fillRect(0, 0, 500, 500);
    g2d.dispose();

    Image image = Image.getInstance(bim, null);
    directContent.addImage(image, 0, 500, -500, 0, 550, 50);

    document.close();

    return baos.toByteArray();
}
 

public static byte[] stampLayer(InputStream _pdfFile, Image iImage, int x, int y, String layername, boolean readLayers) throws IOException, DocumentException
{
    PdfReader reader = new PdfReader(_pdfFile);

    try (   ByteArrayOutputStream ms = new ByteArrayOutputStream()  )
    {
        PdfStamper stamper = new PdfStamper(reader, ms);
        //Don't delete otherwise the stamper flattens the layers
        if (readLayers)
            stamper.getPdfLayers();

        PdfLayer logoLayer = new PdfLayer(layername, stamper.getWriter());
        PdfContentByte cb = stamper.getUnderContent(1);
        cb.beginLayer(logoLayer);

        //300dpi
        iImage.scalePercent(24f);
        iImage.setAbsolutePosition(x, y);
        cb.addImage(iImage);

        cb.endLayer();
        stamper.close();

        return (ms.toByteArray());
    }
}
 

private static void addBackground(PdfWriter writer)
        throws BadElementException, MalformedURLException, IOException, DocumentException {
    PdfContentByte canvas = writer.getDirectContentUnder();
    canvas.saveState();
    canvas.addImage(bkgnd);
    canvas.restoreState();
}
 

static byte[] createClippingTextPdf() throws DocumentException, IOException
{
    ByteArrayOutputStream baos = new ByteArrayOutputStream();

    Document document = new Document();
    PdfWriter writer = PdfWriter.getInstance(document, baos);
    document.open();

    PdfContentByte directContent = writer.getDirectContent();
    directContent.beginText();
    directContent.setTextRenderingMode(PdfPatternPainter.TEXT_RENDER_MODE_CLIP);
    directContent.setTextMatrix(AffineTransform.getTranslateInstance(100, 400));
    directContent.setFontAndSize(BaseFont.createFont(), 100);
    directContent.showText("Test");
    directContent.endText();
    
    BufferedImage bim = new BufferedImage(500, 500, BufferedImage.TYPE_INT_RGB);
    Graphics2D g2d = bim.createGraphics();
    g2d.setColor(Color.BLUE);
    g2d.fillRect(0, 0, 500, 500);
    g2d.dispose();

    Image image = Image.getInstance(bim, null);
    directContent.addImage(image, 500, 0, 0, 599, 50, 50);
    document.close();

    return baos.toByteArray();
}
 

/**
 * <a href="http://stackoverflow.com/questions/39364197/how-to-rotate-around-the-image-center-by-itext">
 * How to rotate around the image center by itext?
 * </a>
 * <p>
 * This test draws an image at given coordinates without rotation and then again
 * as if that image was rotated around its center by some angle.
 * </p>
 */
@Test
public void testAddRotatedImage() throws IOException, DocumentException
{
    try (   FileOutputStream stream = new FileOutputStream(new File(RESULT_FOLDER, "rotatedImage.pdf"))    )
    {
        Document document = new Document();
        PdfWriter writer = PdfWriter.getInstance(document, stream);
        document.open();

        PdfContentByte contentByte = writer.getDirectContent();

        int x = 200;
        int y = 300;
        float rotate = (float) Math.PI / 3;

        try (InputStream imageStream = getClass().getResourceAsStream("/mkl/testarea/itext5/layer/Willi-1.jpg"))
        {
            Image image = Image.getInstance(IOUtils.toByteArray(imageStream));

            // Draw image at x,y without rotation
            contentByte.addImage(image, image.getWidth(), 0, 0, image.getHeight(), x, y);

            // Draw image as if the previous image was rotated around its center
            // Image starts out being 1x1 with origin in lower left
            // Move origin to center of image
            AffineTransform A = AffineTransform.getTranslateInstance(-0.5, -0.5);
            // Stretch it to its dimensions
            AffineTransform B = AffineTransform.getScaleInstance(image.getWidth(), image.getHeight());
            // Rotate it
            AffineTransform C = AffineTransform.getRotateInstance(rotate);
            // Move it to have the same center as above
            AffineTransform D = AffineTransform.getTranslateInstance(x + image.getWidth()/2, y + image.getHeight()/2);
            // Concatenate
            AffineTransform M = (AffineTransform) A.clone();
            M.preConcatenate(B);
            M.preConcatenate(C);
            M.preConcatenate(D);
            //Draw
            contentByte.addImage(image, M);
        }

        document.close();
    }
}
 

/**
 * <a href="http://stackoverflow.com/questions/39364197/how-to-rotate-around-the-image-center-by-itext">
 * How to rotate around the image center by itext?
 * </a>
 * <p>
 * This test draws an image at given coordinates without rotation and then again
 * as if that image was flipped and rotated around its center by some angle.
 * </p>
 */
@Test
public void testAddRotatedFlippedImage() throws IOException, DocumentException
{
    try (   FileOutputStream stream = new FileOutputStream(new File(RESULT_FOLDER, "rotatedFlippedImage.pdf"))    )
    {
        Document document = new Document();
        PdfWriter writer = PdfWriter.getInstance(document, stream);
        document.open();

        PdfContentByte contentByte = writer.getDirectContent();

        int x = 200;
        int y = 300;
        float rotate = (float) Math.PI / 3;

        try (InputStream imageStream = getClass().getResourceAsStream("/mkl/testarea/itext5/layer/Willi-1.jpg"))
        {
            Image image = Image.getInstance(IOUtils.toByteArray(imageStream));

            // Draw image at x,y without rotation
            contentByte.addImage(image, image.getWidth(), 0, 0, image.getHeight(), x, y);

            // Draw image as if the previous image was flipped and rotated around its center
            // Image starts out being 1x1 with origin in lower left
            // Move origin to center of image
            AffineTransform A = AffineTransform.getTranslateInstance(-0.5, -0.5);
            // Flip it horizontally
            AffineTransform B = new AffineTransform(-1, 0, 0, 1, 0, 0);
            // Stretch it to its dimensions
            AffineTransform C = AffineTransform.getScaleInstance(image.getWidth(), image.getHeight());
            // Rotate it
            AffineTransform D = AffineTransform.getRotateInstance(rotate);
            // Move it to have the same center as above
            AffineTransform E = AffineTransform.getTranslateInstance(x + image.getWidth()/2, y + image.getHeight()/2);
            // Concatenate
            AffineTransform M = (AffineTransform) A.clone();
            M.preConcatenate(B);
            M.preConcatenate(C);
            M.preConcatenate(D);
            M.preConcatenate(E);
            //Draw
            contentByte.addImage(image, M);
        }

        document.close();
    }
}
 

/**
 * pdf 用图片加水印
 * @author eko.zhan at 2018年9月2日 下午1:44:58
 * @throws FileNotFoundException
 * @throws IOException
 * @throws DocumentException
 */
@Test
public void testVisioAsPdfWithImg() throws FileNotFoundException, IOException, DocumentException{
	File inputFile = new File("E:/ConvertTester/TestFiles/I_am_a_vsdx.vsdx");
	File outputFile = new File("E:/ConvertTester/TestFiles/I_am_a_vsdx_libreoffice.pdf");
	if (!outputFile.exists()) {
		convert(inputFile, outputFile);
	}
	File destFile = new File("E:/ConvertTester/TestFiles/I_am_a_vsdx_libreoffice_watermark.pdf");
	final String IMG = "D:\\Xiaoi\\logo\\logo.png";
	//转换成 pdf 后利用 itext 加水印 
	PdfReader reader = new PdfReader(new FileInputStream(outputFile));
	PdfStamper stamper = new PdfStamper(reader, new FileOutputStream(destFile));
	int pageNo = reader.getNumberOfPages();
	// text watermark
	Font f = new Font(FontFamily.HELVETICA, 30);
	Phrase p = new Phrase("Xiaoi Robot Image", f);
	// image watermark
	Image img = Image.getInstance(IMG);
	float w = img.getScaledWidth();
	float h = img.getScaledHeight();
	// transparency
	PdfGState gs1 = new PdfGState();
	gs1.setFillOpacity(0.5f);
	// properties
	PdfContentByte over;
	Rectangle pagesize;
	float x, y;
	// loop over every page
	for (int i = 1; i <= pageNo; i++) {
		pagesize = reader.getPageSizeWithRotation(i);
		x = (pagesize.getLeft() + pagesize.getRight()) / 2;
		y = (pagesize.getTop() + pagesize.getBottom()) / 2;
		over = stamper.getOverContent(i);
		over.saveState();
		over.setGState(gs1);
		if (i % 2 == 1)
			ColumnText.showTextAligned(over, Element.ALIGN_CENTER, p, x, y, 0);
		else
			over.addImage(img, w, 0, 0, h, x - (w / 2), y - (h / 2));
		over.restoreState();
	}
	stamper.close();
	reader.close();
}
 

private void addTextAndImage(PcGtsType pc, int cutoffLeft, int cutoffTop, Image img, boolean imageOnly, ExportCache cache) throws DocumentException, IOException {
		lineAndColorList.clear();
		
		PdfContentByte cb = writer.getDirectContentUnder();

		cb.setColorFill(BaseColor.BLACK);
		cb.setColorStroke(BaseColor.BLACK);
		//BaseFont bf = BaseFont.createFont(BaseFont.TIMES_ROMAN, "UTF-8", BaseFont.NOT_EMBEDDED);
		if (!imageOnly){
			cb.beginLayer(ocrLayer);
			//cb.setFontAndSize(bfArial, 32);
			cb.setFontAndSize(mainExportBaseFont, 32);
					
			List<TrpRegionType> regions = pc.getPage().getTextRegionOrImageRegionOrLineDrawingRegion();
			
			/*
			 * use reading order comparator for sorting since at this time reading order is more trustable
			 * other sorting is not transitive and seldomly produces "Comparison violates its general contract" exception
			 */
//			Collections.sort(regions, new TrpElementReadingOrderComparator<RegionType>(true));
			TrpShapeTypeUtils.sortShapesByReadingOrderOrCoordinates(regions);
	
			for(RegionType r : regions){
				//TODO add paths for tables etc.
				if (r instanceof TrpTableRegionType){
					
					exportTable(r, cb, cutoffLeft, cutoffTop, false, cache);

				}
				else if(r instanceof TextRegionType){
					TextRegionType tr = (TextRegionType)r;
					//PageXmlUtils.buildPolygon(tr.getCoords().getPoints()).getBounds().getMinX();
					addTextFromTextRegion(tr, cb, cutoffLeft, cutoffTop, mainExportBaseFont, cache);
				}
			}
			
			//scale after calculating lineMeanHeightForAllRegions
			//lineMeanHeight = lineMeanHeight/scaleFactorX;
			
			cb.endLayer();
		}
				
		cb.beginLayer(imgLayer);		
		cb.addImage(img);
		cb.endLayer();
		
		if (highlightTags || highlightArticles){
			
			highlightAllTagsOnImg(lineAndColorList, cb, cutoffLeft, cutoffTop);
		}
		
		/*
		 * draw tag lines
		 */
		

		
//		addTocLinks(doc, page,cutoffTop);
	}