Java Code Examples for org.apache.pdfbox.pdmodel.common.PDRectangle#getLowerLeftX()

/**
 * <a href="http://stackoverflow.com/questions/40611736/rotate-pdf-around-its-center-using-pdfbox-in-java">
 * Rotate PDF around its center using PDFBox in java
 * </a>
 * <p>
 * This test shows how to rotate the page content and then move its crop box and
 * media box accordingly to make it appear as if the content was rotated around
 * the center of the crop box.
 * </p>
 */
@Test
public void testRotateMoveBox() throws IOException
{
    try (   InputStream resource = getClass().getResourceAsStream("IRJET_Copy_Right_form.pdf")  )
    {
        PDDocument document = Loader.loadPDF(resource);
        PDPage page = document.getDocumentCatalog().getPages().get(0);
        PDPageContentStream cs = new PDPageContentStream(document, page, PDPageContentStream.AppendMode.PREPEND, false, false);
        Matrix matrix = Matrix.getRotateInstance(Math.toRadians(45), 0, 0);
        cs.transform(matrix);
        cs.close();

        PDRectangle cropBox = page.getCropBox();
        float cx = (cropBox.getLowerLeftX() + cropBox.getUpperRightX()) / 2;
        float cy = (cropBox.getLowerLeftY() + cropBox.getUpperRightY()) / 2;
        Point2D.Float newC = matrix.transformPoint(cx, cy);
        float tx = (float)newC.getX() - cx;
        float ty = (float)newC.getY() - cy;
        page.setCropBox(new PDRectangle(cropBox.getLowerLeftX() + tx, cropBox.getLowerLeftY() + ty, cropBox.getWidth(), cropBox.getHeight()));
        PDRectangle mediaBox = page.getMediaBox();
        page.setMediaBox(new PDRectangle(mediaBox.getLowerLeftX() + tx, mediaBox.getLowerLeftY() + ty, mediaBox.getWidth(), mediaBox.getHeight()));

        document.save(new File(RESULT_FOLDER, "IRJET_Copy_Right_form-rotated-move-box.pdf"));
    }
}
 

private BoundingBox generateBoundingBox() throws IOException
{
    if (getFontDescriptor() != null)
    {
        PDRectangle bbox = getFontDescriptor().getFontBoundingBox();
        if (bbox != null &&
                (Float.compare(bbox.getLowerLeftX(), 0) != 0 || 
                 Float.compare(bbox.getLowerLeftY(), 0) != 0 ||
                 Float.compare(bbox.getUpperRightX(), 0) != 0 ||
                 Float.compare(bbox.getUpperRightY(), 0) != 0))
        {
            return new BoundingBox(bbox.getLowerLeftX(), bbox.getLowerLeftY(),
                                   bbox.getUpperRightX(), bbox.getUpperRightY());
        }
    }
    return ttf.getFontBBox();
}
 

/**
 * Returns the updated <code>RD</code> entry for Square and Circle annotations.
 *
 * @return Annotation <code>RD</code> value.
 */
PDRectangle getRectDifference()
{
    if (annotRect == null)
    {
        float d = (float)lineWidth / 2;
        return new PDRectangle(d, d, (float)lineWidth, (float)lineWidth);
    }

    PDRectangle re = (rectWithDiff != null) ? rectWithDiff : annotRect;

    float left = re.getLowerLeftX() - (float)bboxMinX;
    float bottom = re.getLowerLeftY() - (float)bboxMinY;
    float right = (float)bboxMaxX - re.getUpperRightX();
    float top = (float)bboxMaxY - re.getUpperRightY();

    return new PDRectangle(left, bottom, right - left, top - bottom);
}
 

/**
    * Transform the rectangle in order to match the page rotation
    * @param rect the rectangle.
    * @param page the page.
    * @return the transformed rectangle.
    */
   public static PDRectangle transformToPageRotation(
    final PDRectangle rect, final PDPage page) {
AffineTransform transform = transformToPageRotation(page);
if (transform == null) {
    return rect;
}
float[] points = new float[] {rect.getLowerLeftX(), rect.getLowerLeftY(), rect.getUpperRightX(), rect.getUpperRightY()};
float[] rotatedPoints = new float[4]; 
transform.transform(points, 0, rotatedPoints, 0, 2);
PDRectangle rotated = new PDRectangle();
rotated.setLowerLeftX(rotatedPoints[0]);
rotated.setLowerLeftY(rotatedPoints[1]);
rotated.setUpperRightX(rotatedPoints[2]);
rotated.setUpperRightY(rotatedPoints[3]);
return rotated;
   }
 

/**
 * <a href="http://stackoverflow.com/questions/40611736/rotate-pdf-around-its-center-using-pdfbox-in-java">
 * Rotate PDF around its center using PDFBox in java
 * </a>
 * <p>
 * This test shows how to rotate the page content around the center of its crop box.
 * </p>
 */
@Test
public void testRotateCenter() throws IOException
{
    try (   InputStream resource = getClass().getResourceAsStream("IRJET_Copy_Right_form.pdf")  )
    {
        PDDocument document = Loader.loadPDF(resource);
        PDPage page = document.getDocumentCatalog().getPages().get(0);
        PDPageContentStream cs = new PDPageContentStream(document, page, PDPageContentStream.AppendMode.PREPEND, false, false); 
        PDRectangle cropBox = page.getCropBox();
        float tx = (cropBox.getLowerLeftX() + cropBox.getUpperRightX()) / 2;
        float ty = (cropBox.getLowerLeftY() + cropBox.getUpperRightY()) / 2;
        cs.transform(Matrix.getTranslateInstance(tx, ty));
        cs.transform(Matrix.getRotateInstance(Math.toRadians(45), 0, 0));
        cs.transform(Matrix.getTranslateInstance(-tx, -ty));
        cs.close();
        document.save(new File(RESULT_FOLDER, "IRJET_Copy_Right_form-rotated-center.pdf"));
    }
}
 

private BoundingBox generateBoundingBox() throws IOException
{
    if (getFontDescriptor() != null) {
        PDRectangle bbox = getFontDescriptor().getFontBoundingBox();
        if (bbox != null
                && (bbox.getLowerLeftX() != 0 || bbox.getLowerLeftY() != 0
                || bbox.getUpperRightX() != 0 || bbox.getUpperRightY() != 0))
        {
            return new BoundingBox(bbox.getLowerLeftX(), bbox.getLowerLeftY(),
                                   bbox.getUpperRightX(), bbox.getUpperRightY());
        }
    }
    return genericFont.getFontBBox();
}
 

/**
 * The regions ({@link Rectangle2D} instances with coordinates according
 * to the PDFBox text extraction API, e.g. for initializing the regions of
 * a {@link PDFTextStripperByArea}) the {@link PdfBoxFinder} has recognized
 * on the current page.
 */
public Map<String, Rectangle2D> getRegions() {
    PDRectangle cropBox = getPage().getCropBox();
    float xOffset = cropBox.getLowerLeftX();
    float yOffset = cropBox.getUpperRightY();
    Map<String, Rectangle2D> result = getBoxes();
    for (Map.Entry<String, Rectangle2D> entry : result.entrySet()) {
        Rectangle2D box = entry.getValue();
        Rectangle2D region = new Rectangle2D.Float(xOffset + (float)box.getX(), yOffset - (float)(box.getY() + box.getHeight()), (float)box.getWidth(), (float)box.getHeight());
        entry.setValue(region);
    }
    return result;
}
 

/**
 * Places the given form over the existing content of the indicated page (like an overlay).
 * The form is enveloped in a marked content section to indicate that it's part of an
 * optional content group (OCG), here used as a layer. This optional group is returned and
 * can be enabled and disabled through methods on {@link PDOptionalContentProperties}.
 * <p>
 * You may want to call {@link #wrapInSaveRestore(PDPage) wrapInSaveRestore(PDPage)} before calling this method to make
 * sure that the graphics state is reset.
 *
 * @param targetPage the target page
 * @param form the form to place
 * @param transform the transformation matrix that controls the placement of your form. You'll
 * need this if your page has a crop box different than the media box, or if these have negative
 * coordinates, or if you want to scale or adjust your form.
 * @param layerName the name for the layer/OCG to produce
 * @return the optional content group that was generated for the form usage
 * @throws IOException if an I/O error occurs
 */
public PDOptionalContentGroup appendFormAsLayer(PDPage targetPage,
        PDFormXObject form, AffineTransform transform,
        String layerName) throws IOException
{
    PDDocumentCatalog catalog = targetDoc.getDocumentCatalog();
    PDOptionalContentProperties ocprops = catalog.getOCProperties();
    if (ocprops == null)
    {
        ocprops = new PDOptionalContentProperties();
        catalog.setOCProperties(ocprops);
    }
    if (ocprops.hasGroup(layerName))
    {
        throw new IllegalArgumentException("Optional group (layer) already exists: " + layerName);
    }

    PDRectangle cropBox = targetPage.getCropBox();
    if ((cropBox.getLowerLeftX() < 0 || cropBox.getLowerLeftY() < 0) && transform.isIdentity())
    {
        // PDFBOX-4044 
        LOG.warn("Negative cropBox " + cropBox + 
                 " and identity transform may make your form invisible");
    }

    PDOptionalContentGroup layer = new PDOptionalContentGroup(layerName);
    ocprops.addGroup(layer);

    PDPageContentStream contentStream = new PDPageContentStream(
            targetDoc, targetPage, AppendMode.APPEND, !DEBUG);
    contentStream.beginMarkedContent(COSName.OC, layer);
    contentStream.saveGraphicsState();
    contentStream.transform(new Matrix(transform));
    contentStream.drawForm(form);
    contentStream.restoreGraphicsState();
    contentStream.endMarkedContent();
    contentStream.close();

    return layer;
}
 

/**
 * Get a rectangle with the differences applied to each side.
 *
 * <p>
 * Creates a new rectangle with differences added to each side. If there are no valid
 * differences, then the original rectangle is returned.
 *
 * @param rectangle the rectangle.
 * @param differences the differences to apply.
 * @return the padded rectangle.
 */
PDRectangle applyRectDifferences(PDRectangle rectangle, float[] differences)
{
    if (differences == null || differences.length != 4)
    {
        return rectangle;
    }
    return new PDRectangle(rectangle.getLowerLeftX() + differences[0],
            rectangle.getLowerLeftY() + differences[1],
            rectangle.getWidth() - differences[0] - differences[2],
            rectangle.getHeight() - differences[1] - differences[3]);
}
 

/**
 * Get a rectangle enlarged by the differences.
 *
 * <p>
 * Creates a new rectangle with differences added to each side. If there are no valid
 * differences, then the original rectangle is returned.
 *
 * @param rectangle the rectangle.
 * @param differences the differences to apply.
 * @return the padded rectangle.
 */
PDRectangle addRectDifferences(PDRectangle rectangle, float[] differences)
{
    if (differences == null || differences.length != 4)
    {
        return rectangle;
    }
    
    return new PDRectangle(rectangle.getLowerLeftX() - differences[0],
            rectangle.getLowerLeftY() - differences[1],
            rectangle.getWidth() + differences[0] + differences[2],
            rectangle.getHeight() + differences[1] + differences[3]);
}
 

/**
    * Return the quad points representation of the given rect.
    * 
    * @param rect
    *            the rectangle.
    * @param xOffset
    *            the offset in x-direction to add.
    * @param yOffset
    *            the offset in y-direction to add.
    * @return the quad points.
    */
   public static float[] toQuadPoints(final PDRectangle rect, float xOffset,
    float yOffset) {
float[] quads = new float[8];
quads[0] = rect.getLowerLeftX() + xOffset; // x1
quads[1] = rect.getUpperRightY() + yOffset; // y1
quads[2] = rect.getUpperRightX() + xOffset; // x2
quads[3] = quads[1]; // y2
quads[4] = quads[0]; // x3
quads[5] = rect.getLowerLeftY() + yOffset; // y3
quads[6] = quads[2]; // x4
quads[7] = quads[5]; // y5
return quads;
   }
 

/**
 * This will find the CropBox with rotation applied, for this page by looking up the hierarchy
 * until it finds them.
 *
 * @return The CropBox at this level in the hierarchy.
 */
static PDRectangle getRotatedCropBox(PDPage page)
{
    PDRectangle cropBox = page.getCropBox();
    int rotationAngle = page.getRotation();
    if (rotationAngle == 90 || rotationAngle == 270)
    {
        return new PDRectangle(cropBox.getLowerLeftY(), cropBox.getLowerLeftX(),
                               cropBox.getHeight(), cropBox.getWidth());
    }
    else
    {
        return cropBox;
    }
}
 

private BoundingBox generateBoundingBox()
{
    PDRectangle rect = getFontBBox();
    if (rect.getLowerLeftX() == 0 && rect.getLowerLeftY() == 0
            && rect.getUpperRightX() == 0 && rect.getUpperRightY() == 0)
    {
        // Plan B: get the max bounding box of the glyphs
        COSDictionary cp = getCharProcs();
        for (COSName name : cp.keySet())
        {
            COSBase base = cp.getDictionaryObject(name);
            if (base instanceof COSStream)
            {
                PDType3CharProc charProc = new PDType3CharProc(this, (COSStream) base);
                try
                {
                    PDRectangle glyphBBox = charProc.getGlyphBBox();
                    if (glyphBBox == null)
                    {
                        continue;
                    }
                    rect.setLowerLeftX(Math.min(rect.getLowerLeftX(), glyphBBox.getLowerLeftX()));
                    rect.setLowerLeftY(Math.min(rect.getLowerLeftY(), glyphBBox.getLowerLeftY()));
                    rect.setUpperRightX(Math.max(rect.getUpperRightX(), glyphBBox.getUpperRightX()));
                    rect.setUpperRightY(Math.max(rect.getUpperRightY(), glyphBBox.getUpperRightY()));
                }
                catch (IOException ex)
                {
                    // ignore
                }
            }
        }
    }
    return new BoundingBox(rect.getLowerLeftX(), rect.getLowerLeftY(),
            rect.getUpperRightX(), rect.getUpperRightY());
}
 

private BoundingBox generateBoundingBox() throws IOException
{
    if (getFontDescriptor() != null) {
        PDRectangle bbox = getFontDescriptor().getFontBoundingBox();
        if (bbox != null &&
                (bbox.getLowerLeftX() != 0 || bbox.getLowerLeftY() != 0 ||
                 bbox.getUpperRightX() != 0 || bbox.getUpperRightY() != 0))
        {
            return new BoundingBox(bbox.getLowerLeftX(), bbox.getLowerLeftY(),
                                   bbox.getUpperRightX(), bbox.getUpperRightY());
        }
    }
    return genericFont.getFontBBox();
}
 

private void fillBeadRectangles(PDPage page)
{
    beadRectangles = new ArrayList<PDRectangle>();
    for (PDThreadBead bead : page.getThreadBeads())
    {
        if (bead == null)
        {
            // can't skip, because of null entry handling in processTextPosition()
            beadRectangles.add(null);
            continue;
        }
        
        PDRectangle rect = bead.getRectangle();
        
        // bead rectangle is in PDF coordinates (y=0 is bottom),
        // glyphs are in image coordinates (y=0 is top),
        // so we must flip
        PDRectangle mediaBox = page.getMediaBox();
        float upperRightY = mediaBox.getUpperRightY() - rect.getLowerLeftY();
        float lowerLeftY = mediaBox.getUpperRightY() - rect.getUpperRightY();
        rect.setLowerLeftY(lowerLeftY);
        rect.setUpperRightY(upperRightY);
        
        // adjust for cropbox
        PDRectangle cropBox = page.getCropBox();
        if (cropBox.getLowerLeftX() != 0 || cropBox.getLowerLeftY() != 0)
        {
            rect.setLowerLeftX(rect.getLowerLeftX() - cropBox.getLowerLeftX());
            rect.setLowerLeftY(rect.getLowerLeftY() - cropBox.getLowerLeftY());
            rect.setUpperRightX(rect.getUpperRightX() - cropBox.getLowerLeftX());
            rect.setUpperRightY(rect.getUpperRightY() - cropBox.getLowerLeftY());
        }
        
        beadRectangles.add(rect);
    }
}
 

/**
    * Return the quad points representation of the given rect.
    * 
    * @param rect
    *            the rectangle.
    * @param xOffset
    *            the offset in x-direction to add.
    * @param yOffset
    *            the offset in y-direction to add.
    * @return the quad points.
    */
   public static float[] toQuadPoints(final PDRectangle rect, float xOffset,
    float yOffset) {
float[] quads = new float[8];
quads[0] = rect.getLowerLeftX() + xOffset; // x1
quads[1] = rect.getUpperRightY() + yOffset; // y1
quads[2] = rect.getUpperRightX() + xOffset; // x2
quads[3] = quads[1]; // y2
quads[4] = quads[0]; // x3
quads[5] = rect.getLowerLeftY() + yOffset; // y3
quads[6] = quads[2]; // x4
quads[7] = quads[5]; // y5
return quads;
   }
 

@Override
public void processPage(PDPage page) throws IOException {
    PDRectangle pageSize = page.getCropBox();

    lowerLeftX = pageSize.getLowerLeftX();
    lowerLeftY = pageSize.getLowerLeftY();

    super.processPage(page);
}
 

public void setBoundingBox(PDRectangle bBox)
{
	x1 = bBox.getLowerLeftX(); x2 = bBox.getUpperRightX();
	y1 = bBox.getLowerLeftY(); y2 = bBox.getUpperRightY();
}
 

/**
 * <a href="https://stackoverflow.com/questions/46080131/text-coordinates-when-stripping-from-pdfbox">
 * Text coordinates when stripping from PDFBox
 * </a>
 * <br/>
 * <a href="https://download-a.akamaihd.net/files/media_mwb/b7/mwb_I_201711.pdf">
 * mwb_I_201711.pdf
 * </a>
 * <p>
 * This test applies the OP's code to his example PDF file and indeed, there is an offset!
 * This is due to the <code>LegacyPDFStreamEngine</code> method <code>showGlyph</code>
 * which manipulates the text rendering matrix to make the lower left corner of the
 * crop box the origin. In the current version of this test, that offset is corrected,
 * see below. 
 * </p>
 */
@Test
public void testCoverTextByRectanglesMwbI201711() throws IOException {
    try (   InputStream resource = getClass().getResourceAsStream("mwb_I_201711.pdf")  ) {
        PDDocument doc = Loader.loadPDF(resource);

        myStripper stripper = new myStripper();

        stripper.setStartPage(1); // fix it to first page just to test it
        stripper.setEndPage(1);
        stripper.getText(doc);

        TextLine line = stripper.lines.get(1); // the line i want to paint on

        float minx = -1;
        float maxx = -1;

        for (TextPosition pos: line.textPositions)
        {
            if (pos == null)
                continue;

            if (minx == -1 || pos.getTextMatrix().getTranslateX() < minx) {
                minx = pos.getTextMatrix().getTranslateX();
            }
            if (maxx == -1 || pos.getTextMatrix().getTranslateX() > maxx) {
                maxx = pos.getTextMatrix().getTranslateX();
            }
        }

        TextPosition firstPosition = line.textPositions.get(0);
        TextPosition lastPosition = line.textPositions.get(line.textPositions.size() - 1);

        // corrected x and y
        PDRectangle cropBox = doc.getPage(0).getCropBox();

        float x = minx + cropBox.getLowerLeftX();
        float y = firstPosition.getTextMatrix().getTranslateY() + cropBox.getLowerLeftY();
        float w = (maxx - minx) + lastPosition.getWidth();
        float h = lastPosition.getHeightDir();

        PDPageContentStream contentStream = new PDPageContentStream(doc, doc.getPage(0), PDPageContentStream.AppendMode.APPEND, false, true);

        contentStream.setNonStrokingColor(Color.RED);
        contentStream.addRect(x, y, w, h);
        contentStream.fill();
        contentStream.close();

        File fileout = new File(RESULT_FOLDER, "mwb_I_201711-withRectangles.pdf");
        doc.save(fileout);
        doc.close();
    }
}
 

/**
 * Get a padded rectangle.
 * 
 * <p>Creates a new rectangle with padding applied to each side.
 * .
 * @param rectangle the rectangle.
 * @param padding the padding to apply.
 * @return the padded rectangle.
 */
PDRectangle getPaddedRectangle(PDRectangle rectangle, float padding)
{
    return new PDRectangle(rectangle.getLowerLeftX() + padding, rectangle.getLowerLeftY() + padding,
            rectangle.getWidth() - 2 * padding, rectangle.getHeight() - 2 * padding);
}