Java Code Examples for com.itextpdf.text.Rectangle#getHeight()

/**
 * <a href="https://stackoverflow.com/questions/46466747/how-to-split-a-pdf-page-in-java">
 * How to split a PDF page in java?
 * </a>
 * <p>
 * This test shows how to split the pages of a document into tiles of A6
 * size using the {@link Abstract2DPdfPageSplittingTool}.
 * </p>
 */
@Test
public void testSplitDocumentA6() throws IOException, DocumentException {
    try (InputStream resource = getClass().getResourceAsStream("document.pdf");
            OutputStream result = new FileOutputStream(new File(RESULT_FOLDER, "document-A6.pdf"))) {
        Abstract2DPdfPageSplittingTool tool = new Abstract2DPdfPageSplittingTool() {
            @Override
            protected Iterable<Rectangle> determineSplitRectangles(PdfReader reader, int page) {
                Rectangle targetSize = PageSize.A6;
                List<Rectangle> rectangles = new ArrayList<>();
                Rectangle pageSize = reader.getPageSize(page);
                for (float y = pageSize.getTop(); y > pageSize.getBottom() + 5; y-=targetSize.getHeight()) {
                    for (float x = pageSize.getLeft(); x < pageSize.getRight() - 5; x+=targetSize.getWidth()) {
                        rectangles.add(new Rectangle(x, y - targetSize.getHeight(), x + targetSize.getWidth(), y));
                    }
                }
                return rectangles;
            }
        };
        tool.split(result, new PdfReader(resource));
    }
}
 

public static ClusterDefinition clusterPages(final File source, final PageExcludes pageExcludes) throws IOException {
    PdfReader reader = new PdfReader(source.getAbsolutePath());

    ClusterDefinition clusters = new ClusterDefinition();

    for (int page = 1; page <= reader.getNumberOfPages(); page++) {

        Rectangle layoutBox = getLayoutBox(reader, page);

        // create Cluster
        // if the pagenumber should be excluded then use it as a
        // discriminating parameter, else use default value

        boolean excluded = checkExclusionAndGetPageNumber(pageExcludes, page);

        PageCluster tmpCluster = new PageCluster(page % 2 == 0, (int) layoutBox.getWidth(), (int) layoutBox.getHeight(),
            excluded, page);

        clusters.addOrMergeCluster(tmpCluster);
    }
    reader.close();
    clusters.selectAndSetPagesForMerging();
    return clusters;
}
 

private Graphics2D getGraphics(ChartDimensions d) {
  if (myGraphics == null) {
    myTemplate = myWriter.getDirectContent().createTemplate(d.getFullWidth(), d.getChartHeight());
    Rectangle page = myDoc.getPageSize();
    final float width = page.getWidth() - myDoc.leftMargin() - myDoc.rightMargin();
    final float height = page.getHeight() - myDoc.bottomMargin() - myDoc.topMargin();

    final float xscale = width / d.getFullWidth();
    final float yscale = height / d.getChartHeight();
    myScale = Math.min(xscale, yscale);
    myYShift = height - d.getChartHeight() * myScale + myDoc.bottomMargin();
    myGraphics = myTemplate.createGraphics(d.getFullWidth(), d.getChartHeight(),
        myFontCache.getFontMapper(mySubstitutions, myCharset));
    myGraphics.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_OFF);
  }
  return myGraphics;
}
 

/**
 * Get the signature block position, using the provided JSON for the box coordinates
 * and the selected page
 * 
 * @param pageRect
 * @param box
 * @return
 */
protected Rectangle positionBlock(Rectangle pageRect, JSONObject box)
{
	float startX = Float.parseFloat(String.valueOf(box.get("startX")));
	float startY = Float.parseFloat(String.valueOf(box.get("startY")));
	float endX = Float.parseFloat(String.valueOf(box.get("endX")));
	float endY = Float.parseFloat(String.valueOf(box.get("endY")));
	
	// make sure that the ll and ur coordinates match iText's expectations
	startY = pageRect.getHeight() - startY;
	endY = pageRect.getHeight() - endY;
	
	// create the rectangle to contain the signature from the corrected coordinates
	Rectangle r = new Rectangle(startX, startY, endX, endY);
	
	return r;
}
 

Rectangle centerIn(Rectangle source, int rotation, float width, float height)
{
    if (rotation % 180 != 0)
    {
        float temp = height;
        height = width;
        width = temp;
    }

    float halfWidthToRemove = (source.getWidth() - width) / 2.0f;
    float halfHeightToRemove = (source.getHeight() - height) / 2.0f;
    return new Rectangle(source.getLeft(halfWidthToRemove), source.getBottom(halfHeightToRemove),
            source.getRight(halfWidthToRemove), source.getTop(halfHeightToRemove));
}
 

public Collection<Rectangle2D> find(PdfReader reader, float minWidth, float minHeight, int page) throws IOException
{
    Rectangle cropBox = reader.getCropBox(page);
    Rectangle2D crop = new Rectangle2D.Float(cropBox.getLeft(), cropBox.getBottom(), cropBox.getWidth(), cropBox.getHeight());
    FreeSpaceFinder finder = new FreeSpaceFinder(crop, minWidth, minHeight);
    PdfReaderContentParser parser = new PdfReaderContentParser(reader);
    parser.processContent(page, finder);
    return finder.freeSpaces;
}
 

public Collection<Rectangle2D> findExt(PdfReader reader, float minWidth, float minHeight, int page) throws IOException
{
    Rectangle cropBox = reader.getCropBox(page);
    Rectangle2D crop = new Rectangle2D.Float(cropBox.getLeft(), cropBox.getBottom(), cropBox.getWidth(), cropBox.getHeight());
    FreeSpaceFinder finder = new FreeSpaceFinderExt(crop, minWidth, minHeight);
    PdfReaderContentParser parser = new PdfReaderContentParser(reader);
    parser.processContent(page, finder);
    return finder.freeSpaces;
}
 

private static Rectangle calculateScaledRectangle(List<Rectangle> boxes, Float[] ratios, int rotation) {
    if (ratios == null || boxes.size() == 0)
        return null;
    Rectangle smallestBox = null;
    // find smallest box
    float smallestSquare = Float.MAX_VALUE;
    for (Rectangle box : boxes) {
        if (box != null) {
            if (smallestBox == null) {
                smallestBox = box;
            }
            if (smallestSquare > box.getWidth() * box.getHeight()) {
                // set new smallest box
                smallestSquare = box.getWidth() * box.getHeight();
                smallestBox = box;
            }
        }
    }
    if (smallestBox == null)
        return null; // no useable box was found

    // rotate the ratios according to the rotation of the page
    float[] rotRatios = rotateRatios(ratios, rotation);

    // use smallest box as basis for calculation
    Rectangle scaledBox = new Rectangle(smallestBox);

    scaledBox.setLeft(smallestBox.getLeft() + (smallestBox.getWidth() * rotRatios[0]));
    scaledBox.setBottom(smallestBox.getBottom() + (smallestBox.getHeight() * rotRatios[1]));
    scaledBox.setRight(smallestBox.getLeft() + (smallestBox.getWidth() * (1 - rotRatios[2])));
    scaledBox.setTop(smallestBox.getBottom() + (smallestBox.getHeight() * (1 - rotRatios[3])));

    return scaledBox;
}
 

public static Rectangle calculateScaledRectangle(final List<Rectangle> boxes, final Float[] ratios, final int rotation) {
    if (ratios == null || boxes.size() == 0)
        return null;
    Rectangle smallestBox = null;
    // find smallest box
    float smallestSquare = Float.MAX_VALUE;
    for (Rectangle box : boxes) {
        if (box != null) {
            if (smallestBox == null) {
                smallestBox = box;
            }
            if (smallestSquare > box.getWidth() * box.getHeight()) {
                // set new smallest box
                smallestSquare = box.getWidth() * box.getHeight();
                smallestBox = box;
            }
        }
    }
    if (smallestBox == null)
        return null; // no useable box was found

    // rotate the ratios according to the rotation of the page
    float[] rotRatios = rotateRatios(ratios, rotation);

    // use smallest box as basis for calculation
    Rectangle scaledBox = new Rectangle(smallestBox);

    scaledBox.setLeft(smallestBox.getLeft() + (smallestBox.getWidth() * rotRatios[0]));
    scaledBox.setBottom(smallestBox.getBottom() + (smallestBox.getHeight() * rotRatios[1]));
    scaledBox.setRight(smallestBox.getLeft() + (smallestBox.getWidth() * (1 - rotRatios[2])));
    scaledBox.setTop(smallestBox.getBottom() + (smallestBox.getHeight() * (1 - rotRatios[3])));

    return scaledBox;
}
 

public static void clusterPages(ClusterJob clusterJob) throws IOException {
    PdfReader reader = new PdfReader(clusterJob.getSource().getAbsolutePath());

    ClusterCollection clusters = clusterJob.getClusterCollection();
    for (int page = 1; page <= reader.getNumberOfPages(); page++) {
        Rectangle layoutBox = reader.getBoxSize(page, "crop");

        if (layoutBox == null) {
            layoutBox = reader.getBoxSize(page, "media");
        }

        // create Cluster
        // if the pagenumber should be excluded then use it as a
        // discriminating parameter, else use default value

        int pageNumber = -1;
        if (clusterJob.getExcludedPageSet() != null && clusterJob.getExcludedPageSet().contains(page)) {
            pageNumber = page;
        }

        SingleCluster tmpCluster = new SingleCluster(page % 2 == 0, (int) layoutBox.getWidth(),
            (int) layoutBox.getHeight(), pageNumber);

        clusters.addPageToCluster(tmpCluster, page);
    }

    // for every cluster create a set of pages on which the preview will
    // be based
    for (SingleCluster cluster : clusters.getClusterToPagesMapping().keySet()) {
        cluster.choosePagesToMerge(clusters.getClusterToPagesMapping().get(cluster));
    }
    reader.close();
}
 

/**
 * Gets the Y value for centering the signature stamp
 * 
 * @param r
 * @param img
 * @return
 */
protected float getCenterY(Rectangle r, Image img)
{
    float y = 0;
    float pdfheight = r.getHeight();
    float imgheight = img.getHeight();

    y = (pdfheight - imgheight) / 2;

    return y;
}
 

/**
 * <a href="https://stackoverflow.com/questions/45062602/itext-pdfappearence-issue">
 * Text - PDFAppearence issue
 * </a>
 * <p>
 * This test shows how one can create a custom signature layer 2.
 * As the OP of the question at hand mainly wants to generate a
 * pure DESCRIPTION appearance that uses the whole area, we here
 * essentially copy the PdfSignatureAppearance.getAppearance code
 * for generating layer 2 in pure DESCRIPTION mode and apply it
 * to a plain pre-fetched layer 2.
 * </p>
 */
@Test
public void signWithCustomLayer2() throws IOException, DocumentException, GeneralSecurityException
{
    String digestAlgorithm = "SHA512";
    CryptoStandard subfilter = CryptoStandard.CMS;

    try (   InputStream resource = getClass().getResourceAsStream("/mkl/testarea/itext5/extract/test.pdf")  )
    {
        PdfReader reader = new PdfReader(resource);
        FileOutputStream os = new FileOutputStream(new File(RESULT_FOLDER, "test-customLayer2.pdf"));
        PdfStamper stamper = PdfStamper.createSignature(reader, os, '\0');

        PdfSignatureAppearance appearance = stamper.getSignatureAppearance();
        appearance.setReason("reason");
        appearance.setLocation("location");
        appearance.setVisibleSignature(new Rectangle(36, 748, 144, 780), 1, "sig");

        // This essentially is the PdfSignatureAppearance.getAppearance code
        // for generating layer 2 in pure DESCRIPTION mode applied to a plain
        // pre-fetched layer 2.
        // vvvvv
        PdfTemplate layer2 = appearance.getLayer(2);
        String text = "We're using iText to put a text inside a signature placeholder in a PDF. "
                + "We use a code snippet similar to this to define the Signature Appearence.\n"
                + "Everything works fine, but the signature text does not fill all the signature "
                + "placeholder area as expected by us, but the area filled seems to have an height "
                + "that is approximately the 70% of the available space.\n"
                + "As a result, sometimes especially if the length of the signature text is quite "
                + "big, the signature text does not fit in the placeholder and the text is striped "
                + "away.";
        Font font = new Font();
        float size = font.getSize();
        final float MARGIN = 2;
        Rectangle dataRect = new Rectangle(
                MARGIN,
                MARGIN,
                appearance.getRect().getWidth() - MARGIN,
                appearance.getRect().getHeight() - MARGIN);
        if (size <= 0) {
            Rectangle sr = new Rectangle(dataRect.getWidth(), dataRect.getHeight());
            size = ColumnText.fitText(font, text, sr, 12, appearance.getRunDirection());
        }
        ColumnText ct = new ColumnText(layer2);
        ct.setRunDirection(appearance.getRunDirection());
        ct.setSimpleColumn(new Phrase(text, font), dataRect.getLeft(), dataRect.getBottom(), dataRect.getRight(), dataRect.getTop(), size, Element.ALIGN_LEFT);
        ct.go();
        // ^^^^^

        ExternalSignature pks = new PrivateKeySignature(pk, digestAlgorithm, "BC");
        ExternalDigest digest = new BouncyCastleDigest();
        MakeSignature.signDetached(appearance, digest, pks, chain, null, null, null, 0, subfilter);
    }
}