Example usage for com.itextpdf.text.pdf PdfStamper setFullCompression

Introduction

In this page you can find the example usage for com.itextpdf.text.pdf PdfStamper setFullCompression.

Prototype

public void setFullCompression() throws DocumentException 

Source Link

Document

Sets the document's compression to the new 1.5 mode with object streams and xref streams.

Usage

From source file:watermark.java

public static void main(String[] args) {
    try {//from ww  w  . j  av  a2s  . co  m
        PdfReader reader = new PdfReader(args[0]);
        PdfStamper stamp = new PdfStamper(reader, new FileOutputStream(args[1]));
        stamp.getWriter().setCompressionLevel(9); // without this code it'll 3 times bigger

        int bottom_margin = Integer.parseInt(args[2]);
        String lic = String.format(LIC, args[3]);

        BaseFont bf = BaseFont.createFont(FONTFILE, BaseFont.IDENTITY_H, BaseFont.EMBEDDED);
        Chunk c = new Chunk(lic, new Font(bf, 7, Font.NORMAL, TCOLOR));
        c.setTextRenderMode(PdfContentByte.TEXT_RENDER_MODE_FILL_STROKE, 1 / 800f, null);

        Phrase phrase = new Phrase(c);

        int pages = reader.getNumberOfPages();
        int xpos = 90;
        for (int i = 1; i <= pages; i++) {
            if (i % 2 == 0)
                xpos = 160;
            else
                xpos = 90;

            PdfContentByte under = stamp.getUnderContent(i);
            ColumnText.showTextAligned(under, Element.ALIGN_LEFT, phrase, xpos, bottom_margin, -0);
        }

        stamp.setFullCompression(); // without this code it'll 3 times bigger
        stamp.close();
    } catch (Exception e) {
        e.printStackTrace();
    }
}

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From source file:org.h819.commons.file.MyPDFUtils.java

/**
 * ? pdf ??//  w  w  w .  j av a 2 s. c  o  m
 *
 * @param srcPdfFile  the original PDF
 * @param descPdfFile the resulting PDF
 * @throws java.io.IOException
 * @throws DocumentException
 */
public static void compressPdf(File srcPdfFile, File descPdfFile) throws IOException, DocumentException {

    if (srcPdfFile == null || !srcPdfFile.exists())
        throw new IOException("src pdf file '" + srcPdfFile + "' does not exsit.");

    PdfReader reader = getPdfReader(srcPdfFile);
    PdfStamper stamper = new PdfStamper(reader, new FileOutputStream(descPdfFile.getAbsoluteFile()),
            PdfWriter.VERSION_1_7);

    stamper.getWriter().setCompressionLevel(9);
    int total = reader.getNumberOfPages() + 1;
    for (int i = 1; i < total; i++) {
        reader.setPageContent(i, reader.getPageContent(i));
    }
    stamper.setFullCompression();
    stamper.close();
    reader.close();
}

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From source file:org.h819.commons.file.MyPDFUtils.java

/**
 *  pdf ? pdf//from w w w .j  av a2 s  . c o  m
 *
 * @param srcPdf      the original PDF
 * @param destPdf     the resulting PDF
 * @param imageFactor The multiplication factor for the image (?  imageFacto =0.5f)
 * @throws IOException
 * @throws DocumentException
 */
public static void compressPdf(File srcPdf, File destPdf, float imageFactor)
        throws IOException, DocumentException {

    PdfReader reader = new PdfReader(srcPdf.getAbsolutePath());
    int n = reader.getXrefSize();
    PdfObject object;
    PRStream stream;
    // Look for image and manipulate image stream
    for (int i = 0; i < n; i++) {
        object = reader.getPdfObject(i);
        if (object == null || !object.isStream())
            continue;
        stream = (PRStream) object;
        if (!PdfName.IMAGE.equals(stream.getAsName(PdfName.SUBTYPE)))
            continue;
        if (!PdfName.DCTDECODE.equals(stream.getAsName(PdfName.FILTER)))
            continue;
        PdfImageObject image = new PdfImageObject(stream);
        BufferedImage bi = image.getBufferedImage();
        if (bi == null)
            continue;
        int width = (int) (bi.getWidth() * imageFactor);
        int height = (int) (bi.getHeight() * imageFactor);
        if (width <= 0 || height <= 0)
            continue;
        BufferedImage img = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
        AffineTransform at = AffineTransform.getScaleInstance(imageFactor, imageFactor);
        Graphics2D g = img.createGraphics();
        g.drawRenderedImage(bi, at);
        ByteArrayOutputStream imgBytes = new ByteArrayOutputStream();
        ImageIO.write(img, "JPG", imgBytes);
        stream.clear();
        stream.setData(imgBytes.toByteArray(), false, PRStream.NO_COMPRESSION);
        stream.put(PdfName.TYPE, PdfName.XOBJECT);
        stream.put(PdfName.SUBTYPE, PdfName.IMAGE);
        stream.put(PdfName.FILTER, PdfName.DCTDECODE);
        stream.put(PdfName.WIDTH, new PdfNumber(width));
        stream.put(PdfName.HEIGHT, new PdfNumber(height));
        stream.put(PdfName.BITSPERCOMPONENT, new PdfNumber(8));
        stream.put(PdfName.COLORSPACE, PdfName.DEVICERGB);
    }
    reader.removeUnusedObjects();
    // Save altered PDF
    PdfStamper stamper = new PdfStamper(reader, new FileOutputStream(destPdf.getAbsolutePath()));
    stamper.setFullCompression();
    stamper.close();
    reader.close();
}

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