Java Code Examples for org.apache.pdfbox.pdmodel.PDResources#getFont()

private void extractFontResources(PDResources resources) throws IOException {
    for (COSName key : resources.getFontNames()) {
        PDFont font = resources.getFont(key);
        extractStrategy.extract(font);
    }

    for (COSName name : resources.getXObjectNames()) {
        PDXObject xobject = resources.getXObject(name);
        if (xobject instanceof PDFormXObject) {
            PDFormXObject xObjectForm = (PDFormXObject) xobject;
            PDResources formResources = xObjectForm.getResources();

            if (formResources != null)
                extractFontResources(formResources);
        }
    }
}
 

private void validateAndEnsureAcroFormResources()
{
    // add font resources which might be available at the field 
    // level but are not at the AcroForm level to the AcroForm
    // to match Adobe Reader/Acrobat behavior        
    if (field.getAcroForm().getDefaultResources() == null)
    {
        return;
    }
    
    PDResources acroFormResources = field.getAcroForm().getDefaultResources();
    
    for (PDAnnotationWidget widget : field.getWidgets())
    {
        if (widget.getNormalAppearanceStream() != null && widget.getNormalAppearanceStream().getResources() != null)
        {
            PDResources widgetResources = widget.getNormalAppearanceStream().getResources();
            for (COSName fontResourceName : widgetResources.getFontNames())
            {
                try
                {
                    if (acroFormResources.getFont(fontResourceName) == null)
                    {
                        LOG.debug("Adding font resource " + fontResourceName + " from widget to AcroForm");
                        acroFormResources.put(fontResourceName, widgetResources.getFont(fontResourceName));
                    }
                }
                catch (IOException e)
                {
                    LOG.warn("Unable to match field level font with AcroForm font");
                }
            }
        }
    }
}
 

private void processFontResources(PDResources resources, FontTable table) throws IOException
{
    String fontNotSupportedMessage = "Font: {} skipped because type '{}' is not supported.";

    for (COSName key : resources.getFontNames())
    {
        PDFont font = resources.getFont(key);
        if (font instanceof PDTrueTypeFont)
        {
            table.addEntry( font);
            log.debug("Font: " + font.getName() + " TTF");
        }
        else if (font instanceof PDType0Font)
        {
            PDCIDFont descendantFont = ((PDType0Font) font).getDescendantFont();
            if (descendantFont instanceof PDCIDFontType2)
                table.addEntry(font);
            else
                log.warn(fontNotSupportedMessage, font.getName(), font.getClass().getSimpleName());
        }
        else if (font instanceof PDType1CFont)
            table.addEntry(font);
        else
            log.warn(fontNotSupportedMessage, font.getName(), font.getClass().getSimpleName());
    }

    for (COSName name : resources.getXObjectNames())
    {
        PDXObject xobject = resources.getXObject(name);
        if (xobject instanceof PDFormXObject)
        {
            PDFormXObject xObjectForm = (PDFormXObject) xobject;
            PDResources formResources = xObjectForm.getResources();
            if (formResources != null && formResources != resources && formResources.getCOSObject() != resources.getCOSObject())
                processFontResources(formResources, table);
        }
    }

}
 

/**
     * <a href="http://stackoverflow.com/questions/42032729/render-type3-font-character-as-image-using-pdfbox">
     * Render Type3 font character as image using PDFBox
     * </a>
     * <br/>
     * <a href="https://drive.google.com/file/d/0B0f6X4SAMh2KRDJTbm4tb3E1a1U/view">
     * 4700198773.pdf
     * </a>
     * from
     * <a href="http://stackoverflow.com/questions/37754112/extract-text-with-custom-font-result-non-readble">
     * extract text with custom font result non readble
     * </a>
     * <p>
     * This test shows how one can render individual Type 3 font glyphs as bitmaps.
     * Unfortunately PDFBox out-of-the-box does not provide a class to render contents
     * of arbitrary XObjects, merely for rendering pages; thus, we simply create a page
     * with the glyph in question and render that page.   
     * </p>
     * <p>
     * As the OP did not provide a sample PDF, we simply use one from another
     * stackoverflow question. There obviously might remain issues with the
     * OP's files.
     * </p>
     */
    @Test
    public void testRender4700198773() throws IOException, NoSuchMethodException, SecurityException, IllegalAccessException, IllegalArgumentException, InvocationTargetException
    {
        Method PDPageContentStreamWrite = PDPageContentStream.class.getSuperclass().getDeclaredMethod("write", String.class);
        PDPageContentStreamWrite.setAccessible(true);

        try (   InputStream resource = getClass().getResourceAsStream("4700198773.pdf"))
        {
            PDDocument document = Loader.loadPDF(resource);

            PDPage page = document.getPage(0);
            PDResources pageResources = page.getResources();
            COSName f1Name = COSName.getPDFName("F1");
            PDType3Font fontF1 = (PDType3Font) pageResources.getFont(f1Name);
            Map<String, Integer> f1NameToCode = fontF1.getEncoding().getNameToCodeMap();

            COSDictionary charProcsDictionary = fontF1.getCharProcs();
            for (COSName key : charProcsDictionary.keySet())
            {
                COSStream stream = (COSStream) charProcsDictionary.getDictionaryObject(key);
                PDType3CharProc charProc = new PDType3CharProc(fontF1, stream);
                PDRectangle bbox = charProc.getGlyphBBox();
                if (bbox == null)
                    bbox = charProc.getBBox();
                Integer code = f1NameToCode.get(key.getName());

                if (code != null)
                {
                    PDDocument charDocument = new PDDocument();
                    PDPage charPage = new PDPage(bbox);
                    charDocument.addPage(charPage);
                    charPage.setResources(pageResources);
                    PDPageContentStream charContentStream = new PDPageContentStream(charDocument, charPage);
                    charContentStream.beginText();
                    charContentStream.setFont(fontF1, bbox.getHeight());
//                    charContentStream.write(String.format("<%2X> Tj\n", code).getBytes());
                    PDPageContentStreamWrite.invoke(charContentStream, String.format("<%2X> Tj\n", code));
                    charContentStream.endText();
                    charContentStream.close();

                    File result = new File(RESULT_FOLDER, String.format("4700198773-%s-%s.png", key.getName(), code));
                    PDFRenderer renderer = new PDFRenderer(charDocument);
                    BufferedImage image = renderer.renderImageWithDPI(0, 96);
                    ImageIO.write(image, "PNG", result);
                    charDocument.save(new File(RESULT_FOLDER, String.format("4700198773-%s-%s.pdf", key.getName(), code)));
                    charDocument.close();
                }
            }
        }
    }
 

/**
 * <a href="http://stackoverflow.com/questions/42032729/render-type3-font-character-as-image-using-pdfbox">
 * Render Type3 font character as image using PDFBox
 * </a>
 * <br/>
 * <a href="https://drive.google.com/file/d/0B0f6X4SAMh2KRDJTbm4tb3E1a1U/view">
 * 4700198773.pdf
 * </a>
 * from
 * <a href="http://stackoverflow.com/questions/37754112/extract-text-with-custom-font-result-non-readble">
 * extract text with custom font result non readble
 * </a>
 * <p>
 * This test shows how one can render individual Type 3 font glyphs as bitmaps.
 * Unfortunately PDFBox out-of-the-box does not provide a class to render contents
 * of arbitrary XObjects, merely for rendering pages; thus, we simply create a page
 * with the glyph in question and render that page.   
 * </p>
 * <p>
 * As the OP did not provide a sample PDF, we simply use one from another
 * stackoverflow question. There obviously might remain issues with the
 * OP's files.
 * </p>
 */
@Test
public void testRenderSdnList() throws IOException, IllegalAccessException, IllegalArgumentException, InvocationTargetException, NoSuchMethodException, SecurityException
{
    Method PDPageContentStreamWrite = PDPageContentStream.class.getSuperclass().getDeclaredMethod("write", String.class);
    PDPageContentStreamWrite.setAccessible(true);

    try (   InputStream resource = getClass().getResourceAsStream("sdnlist.pdf"))
    {
        PDDocument document = Loader.loadPDF(resource);

        PDPage page = document.getPage(1);
        PDResources pageResources = page.getResources();
        COSName f1Name = COSName.getPDFName("R144");
        PDType3Font fontF1 = (PDType3Font) pageResources.getFont(f1Name);
        Map<String, Integer> f1NameToCode = fontF1.getEncoding().getNameToCodeMap();

        COSDictionary charProcsDictionary = fontF1.getCharProcs();
        for (COSName key : charProcsDictionary.keySet())
        {
            COSStream stream = (COSStream) charProcsDictionary.getDictionaryObject(key);
            PDType3CharProc charProc = new PDType3CharProc(fontF1, stream);
            PDRectangle bbox = charProc.getGlyphBBox();
            if (bbox == null)
                bbox = charProc.getBBox();
            Integer code = f1NameToCode.get(key.getName());

            if (code != null)
            {
                PDDocument charDocument = new PDDocument();
                PDPage charPage = new PDPage(bbox);
                charDocument.addPage(charPage);
                charPage.setResources(pageResources);
                PDPageContentStream charContentStream = new PDPageContentStream(charDocument, charPage);
                charContentStream.beginText();
                charContentStream.setFont(fontF1, bbox.getHeight());
                //charContentStream.getOutputStream().write(String.format("<%2X> Tj\n", code).getBytes());
                PDPageContentStreamWrite.invoke(charContentStream, String.format("<%2X> Tj\n", code));
                charContentStream.endText();
                charContentStream.close();

                File result = new File(RESULT_FOLDER, String.format("sdnlist-%s-%s.png", key.getName(), code));
                PDFRenderer renderer = new PDFRenderer(charDocument);
                BufferedImage image = renderer.renderImageWithDPI(0, 96);
                ImageIO.write(image, "PNG", result);
                charDocument.save(new File(RESULT_FOLDER, String.format("sdnlist-%s-%s.pdf", key.getName(), code)));
                charDocument.close();
            }
        }
    }
}