Example usage for com.itextpdf.text.pdf PdfContentByte TEXT_RENDER_MODE_INVISIBLE

List of usage examples for com.itextpdf.text.pdf PdfContentByte TEXT_RENDER_MODE_INVISIBLE

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Introduction

In this page you can find the example usage for com.itextpdf.text.pdf PdfContentByte TEXT_RENDER_MODE_INVISIBLE.

Prototype

int TEXT_RENDER_MODE_INVISIBLE

To view the source code for com.itextpdf.text.pdf PdfContentByte TEXT_RENDER_MODE_INVISIBLE.

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Document

A possible text rendering value

Usage

From source file:com.automaster.autoview.server.servlet.TextStateOperators.java

/**
 * Creates a PDF document.//from  ww  w . ja va2 s  . c  o  m
 * @param filename the path to the new PDF document
 * @throws DocumentException 
 * @throws IOException
 */
public void createPdf(String filename) throws IOException, DocumentException {
    // step 1
    Rectangle rect = new Rectangle(595, 842);
    Document document = new Document(rect, 30, 30, 30, 30);
    // step 2
    PdfWriter writer = PdfWriter.getInstance(document, new FileOutputStream(filename));
    // step 3
    document.open();
    // step 4
    //PdfAcroForm canva = writer.getAcroForm();

    BaseFont bf = BaseFont.createFont();

    //canva.addMultiLineTextField("txtTeste", "texto de teste vamos ver se le quebra a linha", bf, 15, 300, 800, 100, 100);

    PdfContentByte canvas = writer.getDirectContent();
    String text = "AWAY again";
    String text1 = "TESTE Rua alameda luis de sousa santos, N 52, castanhal, CEP: 68742-783, ao lado do posto adriano";
    canvas.beginText();
    // line 1
    canvas.setFontAndSize(bf, 16);
    canvas.moveText(36, 800);
    canvas.moveTextWithLeading(0, -24);
    canvas.setTextRise(10);
    canvas.showText(text);
    // line 2
    canvas.setWordSpacing(20);
    canvas.newlineShowText(text);
    // line 3
    canvas.setCharacterSpacing(10);
    canvas.newlineShowText(text);
    canvas.setWordSpacing(0);
    canvas.setCharacterSpacing(0);
    // line 4
    canvas.setHorizontalScaling(50);
    canvas.newlineShowText(text);
    canvas.setHorizontalScaling(100);
    // line 5
    canvas.newlineShowText(text);
    canvas.setTextRise(15);
    canvas.setFontAndSize(bf, 12);
    canvas.setColorFill(BaseColor.RED);
    canvas.showText("2");
    canvas.setColorFill(GrayColor.GRAYBLACK);
    // line 6
    canvas.setLeading(56);
    canvas.setMiterLimit(5);
    canvas.newlineShowText(
            "Rua alameda luis de sousa santos, N 52, castanhal, CEP: 68742-783, ao lado do posto" + text);
    canvas.setLeading(24);
    canvas.newlineText();
    Paragraph paragraph = new Paragraph("teste");
    PdfWriter pdfWriter = canvas.getPdfWriter();
    PdfAcroForm pdfAcroForm = pdfWriter.getAcroForm();
    //pdfAcroForm.addMultiLineTextField("txtTeste", "Changing the adriano leading: Rua alameda luis de sousa santos, N 52, castanhal, CEP: 68742-783, ao lado do posto", bf, 12, 30, 650, 550, 750);
    //pdfAcroForm.addHiddenField("txtTeste", text); 
    PdfFormField pdfFormField = new PdfFormField(pdfWriter, 30, 650, 550, 750, null);
    pdfFormField.setFieldName("txtTeste");
    pdfFormField.setValueAsString(text1);
    //TextField textField = new TextField(canvas.getPdfWriter(), new Rectangle(30, 650, 550, 750), "txtTest");
    //textField.setText(text);
    pdfAcroForm.addFormField(pdfFormField);
    // line 7
    PdfTextArray array = new PdfTextArray("A");
    array.add(120);
    array.add("W");
    array.add(120);
    array.add("A");
    array.add(95);
    array.add("Y again");
    canvas.showText(array);
    canvas.endText();

    canvas.setColorFill(BaseColor.BLUE);
    canvas.beginText();
    canvas.setTextMatrix(360, 770);
    canvas.setTextRenderingMode(PdfContentByte.TEXT_RENDER_MODE_FILL);
    canvas.setFontAndSize(bf, 24);
    canvas.showText(text);
    canvas.endText();

    canvas.beginText();
    canvas.setTextMatrix(360, 730);
    canvas.setTextRenderingMode(PdfContentByte.TEXT_RENDER_MODE_STROKE);
    canvas.setFontAndSize(bf, 24);
    canvas.showText(text);
    canvas.endText();

    canvas.beginText();
    canvas.setTextMatrix(360, 690);
    canvas.setTextRenderingMode(PdfContentByte.TEXT_RENDER_MODE_FILL_STROKE);
    canvas.setFontAndSize(bf, 24);
    canvas.showText(text);
    canvas.endText();

    canvas.beginText();
    canvas.setTextMatrix(360, 650);
    canvas.setTextRenderingMode(PdfContentByte.TEXT_RENDER_MODE_INVISIBLE);
    canvas.setFontAndSize(bf, 24);
    canvas.showText(text);
    canvas.endText();

    PdfTemplate template = canvas.createTemplate(200, 36);
    template.setLineWidth(2);
    for (int i = 0; i < 6; i++) {
        template.moveTo(0, i * 6);
        template.lineTo(200, i * 6);
    }
    template.stroke();

    canvas.saveState();
    canvas.beginText();
    canvas.setTextMatrix(360, 610);
    canvas.setTextRenderingMode(PdfContentByte.TEXT_RENDER_MODE_FILL_CLIP);
    canvas.setFontAndSize(bf, 24);
    canvas.showText(text);
    canvas.endText();
    canvas.addTemplate(template, 360, 610);
    canvas.restoreState();

    canvas.saveState();
    canvas.beginText();
    canvas.setTextMatrix(360, 570);
    canvas.setTextRenderingMode(PdfContentByte.TEXT_RENDER_MODE_STROKE_CLIP);
    canvas.setFontAndSize(bf, 24);
    canvas.showText(text);
    canvas.endText();
    canvas.addTemplate(template, 360, 570);
    canvas.restoreState();

    canvas.saveState();
    canvas.beginText();
    canvas.setTextMatrix(360, 530);
    canvas.setTextRenderingMode(PdfContentByte.TEXT_RENDER_MODE_FILL_STROKE_CLIP);
    canvas.setFontAndSize(bf, 24);
    canvas.showText(text);
    canvas.endText();
    canvas.addTemplate(template, 360, 530);
    canvas.restoreState();

    canvas.saveState();
    canvas.beginText();
    canvas.setTextMatrix(360, 490);
    canvas.setTextRenderingMode(PdfContentByte.TEXT_RENDER_MODE_CLIP);
    canvas.setFontAndSize(bf, 24);
    canvas.showText(text);
    canvas.endText();
    canvas.addTemplate(template, 360, 490);
    canvas.restoreState();

    // step 5
    //document.add((Element) pdfAcroForm);
    document.close();
}

From source file:com.ephesoft.dcma.imagemagick.MultiPageExecutor.java

License:Open Source License

/**
 * The <code>addImageToPdf</code> method is used to add image to pdf and make it searchable by adding image text in invisible mode
 * w.r.t parameter 'isPdfSearchable' passed.
 * //ww  w . ja  v  a2s  . c  o  m
 * @param pdfWriter {@link PdfWriter} writer of pdf in which image has to be added
 * @param htmlUrl {@link HocrPage} corresponding html file for fetching text and coordinates
 * @param imageUrl {@link String} url of image to be added in pdf
 * @param isPdfSearchable true for searchable pdf else otherwise
 * @param widthOfLine
 */
private void addImageToPdf(PdfWriter pdfWriter, HocrPage hocrPage, String imageUrl, boolean isPdfSearchable,
        final int widthOfLine) {
    if (null != pdfWriter && null != imageUrl && imageUrl.length() > 0) {
        try {
            LOGGER.info("Adding image" + imageUrl + " to pdf using iText");
            Image pageImage = Image.getInstance(imageUrl);
            float dotsPerPointX = pageImage.getDpiX() / PDF_RESOLUTION;
            float dotsPerPointY = pageImage.getDpiY() / PDF_RESOLUTION;
            PdfContentByte pdfContentByte = pdfWriter.getDirectContent();

            pageImage.scaleToFit(pageImage.getWidth() / dotsPerPointX, pageImage.getHeight() / dotsPerPointY);

            pageImage.setAbsolutePosition(0, 0);

            // Add image to pdf
            pdfWriter.getDirectContentUnder().addImage(pageImage);
            pdfWriter.getDirectContentUnder().add(pdfContentByte);

            // If pdf is to be made searchable
            if (isPdfSearchable) {
                LOGGER.info("Adding invisible text for image: " + imageUrl);
                float pageImagePixelHeight = pageImage.getHeight();
                Font defaultFont = FontFactory.getFont(FontFactory.HELVETICA, 8, Font.BOLD, CMYKColor.BLACK);

                // Fetch text and coordinates for image to be added
                Map<String, int[]> textCoordinatesMap = getTextWithCoordinatesMap(hocrPage, widthOfLine);
                Set<String> ketSet = textCoordinatesMap.keySet();

                // Add text at specific location
                for (String key : ketSet) {
                    int[] coordinates = textCoordinatesMap.get(key);
                    float bboxWidthPt = (coordinates[2] - coordinates[0]) / dotsPerPointX;
                    float bboxHeightPt = (coordinates[3] - coordinates[1]) / dotsPerPointY;
                    pdfContentByte.beginText();

                    // To make text added as invisible
                    pdfContentByte.setTextRenderingMode(PdfContentByte.TEXT_RENDER_MODE_INVISIBLE);
                    pdfContentByte.setLineWidth(Math.round(bboxWidthPt));

                    // Ceil is used so that minimum font of any text is 1
                    // For exception of unbalanced beginText() and endText()
                    if (bboxHeightPt > 0.0) {
                        pdfContentByte.setFontAndSize(defaultFont.getBaseFont(),
                                (float) Math.ceil(bboxHeightPt));
                    } else {
                        pdfContentByte.setFontAndSize(defaultFont.getBaseFont(), 1);
                    }
                    float xCoordinate = (float) (coordinates[0] / dotsPerPointX);
                    float yCoordinate = (float) ((pageImagePixelHeight - coordinates[3]) / dotsPerPointY);
                    pdfContentByte.moveText(xCoordinate, yCoordinate);
                    pdfContentByte.showText(key);
                    pdfContentByte.endText();
                }
            }
            pdfContentByte.closePath();
        } catch (BadElementException badElementException) {
            LOGGER.error("Error occurred while adding image" + imageUrl + " to pdf using Itext: "
                    + badElementException.toString());
        } catch (DocumentException documentException) {
            LOGGER.error("Error occurred while adding image" + imageUrl + " to pdf using Itext: "
                    + documentException.toString());
        } catch (MalformedURLException malformedURLException) {
            LOGGER.error("Error occurred while adding image" + imageUrl + " to pdf using Itext: "
                    + malformedURLException.toString());
        } catch (IOException ioException) {
            LOGGER.error("Error occurred while adding image" + imageUrl + " to pdf using Itext: "
                    + ioException.toString());
        }
    }
}

From source file:com.github.ossdevs.jhocr.converter.HocrPageProcessor.java

License:Open Source License

/**
 * TODO add documentation describing what this method does actually do.
 *
 * @param cb       TODO describe this parameter &/ it's purpose.
 * @param hocrLine is used to process the {@link com.itextpdf.text.pdf.PdfContentByte}
 * @throws IOException//ww  w.  j a v a  2  s .  c  om
 * @throws DocumentException
 * @see https://code.google.com/p/jhocr/issues/detail?id=4
 */
private void processHocrLine(PdfContentByte cb, HocrLine hocrLine) {

    try {
        String lineText = hocrLine.getText();

        /**
         * TODO add documentation
         */
        if (!lineText.isEmpty()) {

            float lineHeightPt = hocrLine.getBbox().getHeight() / getDotsPerPointY();

            float fontSize = Math.round(lineHeightPt) - 0.8f; // Coloquei para o limite de erro

            if (fontSize == 0) {
                fontSize = 0.5f;
            }

            cb.setFontAndSize(baseFont, fontSize);
            cb.setTextRenderingMode(PdfContentByte.TEXT_RENDER_MODE_INVISIBLE);
            cb.beginText();

            int t = hocrLine.getWords().size();

            /**
             * TODO add documentation
             *
             * @see <a>https://code.google.com/p/jhocr/issues/detail?id=4</a>
             */
            for (int i = 0; i < t; i++) {

                HocrWord hocrWord = hocrLine.getWords().get(i);

                float wordWidthPt = hocrWord.getBbox().getWidth() / getDotsPerPointX();

                processHocrWordCharacterSpacing(cb, hocrWord, wordWidthPt);

                float y = (getHocrPage().getBbox().getHeight() + lineHeightPt / 2
                        - hocrLine.getBbox().getBottom()) / dotsPerPointY;
                float x = hocrWord.getBbox().getLeft() / getDotsPerPointX();

                cb.showTextAligned(PdfContentByte.ALIGN_LEFT, hocrWord.getText(), x, y, 0);
            }

            cb.endText();

        }

    } catch (Exception e) {
        // TODO log error
        e.printStackTrace();
    }
}

From source file:com.googlecode.jhocr.converter.HocrPageProcessor.java

License:Open Source License

/**
 * TODO add documentation describing what this method does actually do.
 * /*from w w  w. j  a  v  a  2  s.c  om*/
 * @see https://code.google.com/p/jhocr/issues/detail?id=4
 * @param cb
 *            TODO describe this parameter &/ it's purpose.
 * @param hocrLine
 *            is used to process the {@link com.itextpdf.text.pdf.PdfContentByte}
 * @throws IOException
 * @throws DocumentException
 */
private void processHocrLine(PdfContentByte cb, HocrLine hocrLine) {

    try {
        String lineText = hocrLine.getText();

        /**
         * TODO add documentation
         */
        if (!lineText.isEmpty()) {

            float lineHeightPt = hocrLine.getBbox().getHeight() / getDotsPerPointY();

            float fontSize = Math.round(lineHeightPt) - 0.8f; // Coloquei para o limite de erro

            if (fontSize == 0) {
                fontSize = 0.5f;
            }

            cb.setFontAndSize(baseFont, fontSize);
            cb.setTextRenderingMode(PdfContentByte.TEXT_RENDER_MODE_INVISIBLE);
            cb.beginText();

            int t = hocrLine.getWords().size();

            /**
             * TODO add documentation
             * 
             * @see <a>https://code.google.com/p/jhocr/issues/detail?id=4</a>
             */
            for (int i = 0; i < t; i++) {

                HocrWord hocrWord = hocrLine.getWords().get(i);

                float wordWidthPt = hocrWord.getBbox().getWidth() / getDotsPerPointX();

                processHocrWordCharacterSpacing(cb, hocrWord, wordWidthPt);

                float y = (getHocrPage().getBbox().getHeight() + lineHeightPt / 2
                        - hocrLine.getBbox().getBottom()) / dotsPerPointY;
                float x = hocrWord.getBbox().getLeft() / getDotsPerPointX();

                cb.showTextAligned(PdfContentByte.ALIGN_LEFT, hocrWord.getText(), x, y, 0);
            }

            cb.endText();

        }

    } catch (Exception e) {
        // TODO log error
        e.printStackTrace();
    }
}

From source file:pl.marcinmilkowski.hocrtopdf.Main.java

License:Open Source License

/**
 * @param args//w ww.ja va 2 s . c  o  m
 */
public static void main(String[] args) {
    try {
        if (args.length < 1 || args[0] == "--help" || args[0] == "-h") {
            System.out.print("Usage: java pl.marcinmilkowski.hocrtopdf.Main INPUTURL.html OUTPUTURL.pdf\n"
                    + "\n" + "Converts hOCR files into PDF\n" + "\n"
                    + "Example: java pl.marcinmilkowski.hocrtopdf.Main hocr.html output.pdf\n");
            if (args.length < 1)
                System.exit(-1);
            else
                System.exit(0);
        }
        URL inputHOCRFile = null;
        FileOutputStream outputPDFStream = null;
        try {
            File file = new File(args[0]);
            inputHOCRFile = file.toURI().toURL();
        } catch (MalformedURLException e) {
            System.out.println("The first parameter has to be a valid file.");
            System.out.println("We got an error: " + e.getMessage());
            System.exit(-1);
        }
        try {
            outputPDFStream = new FileOutputStream(args[1]);
        } catch (FileNotFoundException e) {
            System.out.println("The second parameter has to be a valid URL");
            System.exit(-1);
        }

        // The resolution of a PDF file (using iText) is 72pt per inch
        float pointsPerInch = 72.0f;

        // Using the jericho library to parse the HTML file
        Source source = new Source(inputHOCRFile);

        int pageCounter = 1;

        Document pdfDocument = null;
        PdfWriter pdfWriter = null;
        PdfContentByte cb = null;
        RandomAccessFileOrArray ra = null;

        // Find the tag of class ocr_page in order to load the scanned image
        StartTag pageTag = source.getNextStartTag(0, "class", OCRPAGE);
        while (pageTag != null) {
            int prevPos = pageTag.getEnd();
            Pattern imagePattern = Pattern.compile("image\\s+([^;]+)");
            Matcher imageMatcher = imagePattern.matcher(pageTag.getElement().getAttributeValue("title"));
            if (!imageMatcher.find()) {
                System.out.println("Could not find a tag of class \"ocr_page\", aborting.");
                System.exit(-1);
            }
            // Load the image
            Image pageImage = null;
            try {
                File file = new File(imageMatcher.group(1));
                pageImage = Image.getInstance(file.toURI().toURL());
            } catch (MalformedURLException e) {
                System.out.println("Could not load the scanned image from: " + "file://" + imageMatcher.group(1)
                        + ", aborting.");
                System.exit(-1);
            }
            if (pageImage.getOriginalType() == Image.ORIGINAL_TIFF) { // this might
                                                                      // be
                                                                      // multipage
                                                                      // tiff!
                File file = new File(imageMatcher.group(1));
                if (pageCounter == 1 || ra == null) {
                    ra = new RandomAccessFileOrArray(file.toURI().toURL());
                }
                int nPages = TiffImage.getNumberOfPages(ra);
                if (nPages > 0 && pageCounter <= nPages) {
                    pageImage = TiffImage.getTiffImage(ra, pageCounter);
                }
            }
            int dpiX = pageImage.getDpiX();
            if (dpiX == 0) { // for images that don't set the resolution we assume
                             // 300 dpi
                dpiX = 300;
            }
            int dpiY = pageImage.getDpiY();
            if (dpiY == 0) { // as above for dpiX
                dpiY = 300;
            }
            float dotsPerPointX = dpiX / pointsPerInch;
            float dotsPerPointY = dpiY / pointsPerInch;
            float pageImagePixelHeight = pageImage.getHeight();
            if (pdfDocument == null) {
                pdfDocument = new Document(new Rectangle(pageImage.getWidth() / dotsPerPointX,
                        pageImage.getHeight() / dotsPerPointY));
                pdfWriter = PdfWriter.getInstance(pdfDocument, outputPDFStream);
                pdfDocument.open();
                // Put the text behind the picture (reverse for debugging)
                // cb = pdfWriter.getDirectContentUnder();
                cb = pdfWriter.getDirectContent();
            } else {
                pdfDocument.setPageSize(new Rectangle(pageImage.getWidth() / dotsPerPointX,
                        pageImage.getHeight() / dotsPerPointY));
                pdfDocument.newPage();
            }
            // first define a standard font for our text
            BaseFont base = BaseFont.createFont(BaseFont.HELVETICA, BaseFont.CP1250, BaseFont.EMBEDDED);
            Font defaultFont = new Font(base, 8);
            // FontFactory.getFont(FontFactory.HELVETICA, 8, Font.BOLD,
            // CMYKColor.BLACK);

            cb.setHorizontalScaling(1.0f);

            pageImage.scaleToFit(pageImage.getWidth() / dotsPerPointX, pageImage.getHeight() / dotsPerPointY);
            pageImage.setAbsolutePosition(0, 0);
            // Put the image in front of the text (reverse for debugging)
            // pdfWriter.getDirectContent().addImage(pageImage);
            pdfWriter.getDirectContentUnder().addImage(pageImage);

            // In order to place text behind the recognised text snippets we are
            // interested in the bbox property
            Pattern bboxPattern = Pattern.compile("bbox(\\s+\\d+){4}");
            // This pattern separates the coordinates of the bbox property
            Pattern bboxCoordinatePattern = Pattern.compile("(\\d+)\\s+(\\d+)\\s+(\\d+)\\s+(\\d+)");
            // Only tags of the ocr_line class are interesting
            StartTag ocrTag = source.getNextStartTag(prevPos, "class", OCRPAGEORLINE);
            while (ocrTag != null) {
                prevPos = ocrTag.getEnd();
                if ("ocrx_word".equalsIgnoreCase(ocrTag.getAttributeValue("class"))) {
                    net.htmlparser.jericho.Element lineElement = ocrTag.getElement();
                    Matcher bboxMatcher = bboxPattern.matcher(lineElement.getAttributeValue("title"));
                    if (bboxMatcher.find()) {
                        // We found a tag of the ocr_line class containing a bbox property
                        Matcher bboxCoordinateMatcher = bboxCoordinatePattern.matcher(bboxMatcher.group());
                        bboxCoordinateMatcher.find();
                        int[] coordinates = { Integer.parseInt((bboxCoordinateMatcher.group(1))),
                                Integer.parseInt((bboxCoordinateMatcher.group(2))),
                                Integer.parseInt((bboxCoordinateMatcher.group(3))),
                                Integer.parseInt((bboxCoordinateMatcher.group(4))) };
                        String line = lineElement.getContent().getTextExtractor().toString();
                        float bboxWidthPt = (coordinates[2] - coordinates[0]) / dotsPerPointX;
                        float bboxHeightPt = (coordinates[3] - coordinates[1]) / dotsPerPointY;

                        // Put the text into the PDF
                        cb.beginText();
                        // Comment the next line to debug the PDF output (visible Text)
                        cb.setTextRenderingMode(PdfContentByte.TEXT_RENDER_MODE_INVISIBLE);
                        // height
                        cb.setFontAndSize(defaultFont.getBaseFont(), Math.max(Math.round(bboxHeightPt), 1));
                        // width
                        cb.setHorizontalScaling(bboxWidthPt / cb.getEffectiveStringWidth(line, false));
                        cb.moveText((coordinates[0] / dotsPerPointX),
                                ((pageImagePixelHeight - coordinates[3]) / dotsPerPointY));
                        cb.showText(line);
                        cb.endText();
                        cb.setHorizontalScaling(1.0f);
                    }
                } else {
                    if ("ocr_page".equalsIgnoreCase(ocrTag.getAttributeValue("class"))) {
                        pageCounter++;
                        pageTag = ocrTag;
                        break;
                    }
                }
                ocrTag = source.getNextStartTag(prevPos, "class", OCRPAGEORLINE);
            }
            if (ocrTag == null) {
                pdfDocument.close();
                break;
            }
        }
    } catch (DocumentException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    } catch (IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
}