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

@Override
    public void cellLayout(PdfPCell cell, Rectangle position, PdfContentByte[] canvases) {
        PdfContentByte canvas = canvases[PdfPTable.BACKGROUNDCANVAS];

        float xTransition = position.getLeft() + (position.getRight() - position.getLeft()) * (percent/100.0f);
        float yTransition = (position.getTop() + position.getBottom()) / 2f;
        float radius = (position.getRight() - position.getLeft()) * 0.025f;
        PdfShading axial = PdfShading.simpleAxial(canvas.getPdfWriter(),
                xTransition - radius, yTransition, xTransition + radius, yTransition, leftColor, rightColor);
        PdfShadingPattern shading = new PdfShadingPattern(axial);

        canvas.saveState();
        canvas.setShadingFill(shading);
        canvas.rectangle(position.getLeft(), position.getBottom(), position.getWidth(), position.getHeight());
//        canvas.clip();
        canvas.fill();
        canvas.restoreState();
    }
 

/**
 * <a href="http://stackoverflow.com/questions/43870545/filling-a-pdf-with-itextsharp-and-then-hiding-the-base-layer">
 * Filling a PDF with iTextsharp and then hiding the base layer
 * </a>
 * <p>
 * This test shows how to cover all content using a white rectangle.
 * </p>
 */
@Test
public void testHideContenUnderRectangle() throws IOException, DocumentException
{
    try (   InputStream resource = getClass().getResourceAsStream("document.pdf");
            OutputStream result = new FileOutputStream(new File(RESULT_FOLDER, "document-hiddenContent.pdf")))
    {
        PdfReader pdfReader = new PdfReader(resource);
        PdfStamper pdfStamper = new PdfStamper(pdfReader, result);
        for (int page = 1; page <= pdfReader.getNumberOfPages(); page++)
        {
            Rectangle pageSize = pdfReader.getPageSize(page);
            PdfContentByte canvas = pdfStamper.getOverContent(page);
            canvas.setColorFill(BaseColor.WHITE);
            canvas.rectangle(pageSize.getLeft(), pageSize.getBottom(), pageSize.getWidth(), pageSize.getHeight());
            canvas.fill();
        }
        pdfStamper.close();
    }
}
 

/**
 * <a href="https://stackoverflow.com/questions/50121297/missing-colored-area-on-pdf-using-itext-pdf">
 * Missing colored area on pdf using itext pdf
 * </a>
 * <p>
 * This test shows how to mark a whole table row without the
 * marking hiding the existing content or vice versa.
 * </p>
 */
@Test
public void test() throws IOException, DocumentException {
    try (   InputStream resource = getClass().getResourceAsStream("document.pdf");
            OutputStream result = new FileOutputStream(new File(RESULT_FOLDER, "document-marked.pdf"))) {
        PdfReader pdfReader = new PdfReader(resource);
        PdfStamper stamper = new PdfStamper(pdfReader, result);

        PdfContentByte canvas = stamper.getOverContent(1);
        canvas.saveState();
        PdfGState state = new PdfGState();
        state.setBlendMode(new PdfName("Multiply"));
        canvas.setGState(state);
        canvas.setColorFill(BaseColor.YELLOW);
        canvas.rectangle(60, 586, 477, 24);
        canvas.fill();
        canvas.restoreState();

        stamper.close();
    }
}
 

@Override
public void onEndPage(PdfWriter writer, Document document) {
    if (active) {
        PdfContentByte cb = writer.getDirectContentUnder();
        cb.saveState();
        cb.setColorFill(color);
        cb.rectangle(document.left(), document.bottom() - offset,
                document.right() - document.left(), startPosition - document.bottom());
        cb.fill();
        cb.restoreState();
    }
}
 

@Override
public void onParagraphEnd(PdfWriter writer, Document document, float paragraphPosition) {
    if (active) {
        PdfContentByte cb = writer.getDirectContentUnder();
        cb.saveState();
        cb.setColorFill(color);
        cb.rectangle(document.left(), paragraphPosition - offset,
                document.right() - document.left(), startPosition - paragraphPosition);
        cb.fill();
        cb.restoreState();
    }
}
 

@Test
public void testSimple() throws FileNotFoundException, DocumentException
{
    Document document = new Document();
    PdfWriter writer = PdfWriter.getInstance(document, new FileOutputStream(new File(RESULT_FOLDER, "transparency.pdf")));
    writer.setCompressionLevel(0);
    document.open();
    PdfContentByte content = writer.getDirectContent();

    content.setRGBColorStroke(0, 255, 0);
    for (int y = 0; y <= 400; y+= 10)
    {
        content.moveTo(0, y);
        content.lineTo(500, y);
    }
    for (int x = 0; x <= 500; x+= 10)
    {
        content.moveTo(x, 0);
        content.lineTo(x, 400);
    }
    content.stroke();

    
    content.saveState();
    PdfGState state = new PdfGState();
    state.setFillOpacity(0.5f);
    content.setGState(state);
    content.setRGBColorFill(255, 0, 0);
    content.moveTo(162, 86);
    content.lineTo(162, 286);
    content.lineTo(362, 286);
    content.lineTo(362, 86);
    content.closePath();
    //content.fillStroke();
    content.fill();
    
    content.restoreState();

    document.close();
}
 

void enhance(PdfContentByte page, Collection<Rectangle2D> rectangles, Point2D point, BaseColor color)
{
    Rectangle2D best = null;
    double bestDist = Double.MAX_VALUE;

    for (Rectangle2D rectangle : rectangles)
    {
        double distance = distance(rectangle, point);
        if (distance < bestDist)
        {
            best = rectangle;
            bestDist = distance;
        }
    }

    if (best != null)
    {
        page.setColorFill(color);
        page.rectangle((float) best.getMinX(), (float) best.getMinY(), (float) best.getWidth(), (float) best.getHeight());
        page.fill();
        System.out.printf("    Best rectangle for %7.3f, %7.3f is %7.3f, %7.3f, %7.3f, %7.3f\n", point.getX(), point.getY(), best.getMinX(),
                best.getMinY(), best.getWidth(), best.getHeight());
    }
    else
    {
        System.err.printf("!!! No best rectangle for %7.3f, %7.3f\n", point.getX(), point.getY());
    }
}
 

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

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

    PdfContentByte directContent = writer.getDirectContent();
    Rectangle pageSuze = document.getPageSize();
    
    PdfPatternPainter painter = directContent.createPattern(200, 150);
    painter.setColorStroke(BaseColor.GREEN);
    painter.beginText();
    painter.setTextRenderingMode(PdfPatternPainter.TEXT_RENDER_MODE_STROKE);
    painter.setTextMatrix(AffineTransform.getTranslateInstance(0, 50));
    painter.setFontAndSize(BaseFont.createFont(), 100);
    painter.showText("Test");
    painter.endText();

    directContent.setColorFill(new PatternColor(painter));
    directContent.rectangle(pageSuze.getLeft(), pageSuze.getBottom(), pageSuze.getWidth(), pageSuze.getHeight());
    directContent.fill();

    document.close();

    return baos.toByteArray();
}
 

@Test
public void testComplex() throws FileNotFoundException, DocumentException
{
    Document document = new Document();
    PdfWriter writer = PdfWriter.getInstance(document, new FileOutputStream(new File(RESULT_FOLDER, "transparencyComplex.pdf")));
    writer.setCompressionLevel(0);
    document.open();
    PdfContentByte content = writer.getDirectContent();

    content.setRGBColorStroke(0, 255, 0);
    for (int y = 0; y <= 400; y+= 10)
    {
        content.moveTo(0, y);
        content.lineTo(500, y);
    }
    for (int x = 0; x <= 500; x+= 10)
    {
        content.moveTo(x, 0);
        content.lineTo(x, 400);
    }
    content.stroke();

    PdfTemplate template = content.createTemplate(500, 400);
    PdfTransparencyGroup group = new PdfTransparencyGroup();
    group.put(PdfName.CS, PdfName.DEVICEGRAY);
    group.setIsolated(false);
    group.setKnockout(false);
    template.setGroup(group);
    PdfShading radial = PdfShading.simpleRadial(writer, 262, 186, 10, 262, 186, 190, BaseColor.WHITE, BaseColor.BLACK, true, true);
    template.paintShading(radial);

    PdfDictionary mask = new PdfDictionary();
    mask.put(PdfName.TYPE, PdfName.MASK);
    mask.put(PdfName.S, new PdfName("Luminosity"));
    mask.put(new PdfName("G"), template.getIndirectReference());

    content.saveState();
    PdfGState state = new PdfGState();
    state.put(PdfName.SMASK, mask);
    content.setGState(state);
    content.setRGBColorFill(255, 0, 0);
    content.moveTo(162, 86);
    content.lineTo(162, 286);
    content.lineTo(362, 286);
    content.lineTo(362, 86);
    content.closePath();
    //content.fillStroke();
    content.fill();
    
    content.restoreState();

    document.close();
}