public Object createStreamFromPDFBoxPage()

in src/java/org/apache/fop/render/pdf/pdfbox/PDFBoxAdapter.java [177:284]
82 lines of code
14 McCabe index (conditional complexity)

    public Object createStreamFromPDFBoxPage(PDDocument sourceDoc, PDPage sourcePage, String key,
                                             AffineTransform pageAdjust, FontInfo fontinfo, Rectangle destRect)
        throws IOException {
        COSDictionary sourcePageResources = getResources(sourcePage);
        PatternUtil patternUtil = new PatternUtil(targetPage, destRect, sourcePage);
        uniqueName = new UniqueName(
                key, sourcePageResources, patternUtil.getPatternNames(), pdfDoc.isFormXObjectEnabled(), destRect);
        key = patternUtil.getKey(key);
        handleAnnotations(sourceDoc, sourcePage, pageAdjust, destRect);
        if (pageNumbers.containsKey(targetPage.getPageIndex())) {
            pageNumbers.get(targetPage.getPageIndex()).set(0, targetPage.makeReference());
        }
        PDStream pdStream = getContents(sourcePage);

        COSDictionary fonts = (COSDictionary)sourcePageResources.getDictionaryObject(COSName.FONT);
        COSDictionary fontsBackup = null;
        String newStream = null;
        if (fonts != null && pdfDoc.isMergeFontsEnabled()) {
            fontsBackup = new COSDictionary(fonts);
            MergeFontsPDFWriter m = new MergeFontsPDFWriter(fonts, fontinfo, uniqueName, parentFonts, currentMCID);
            newStream = m.writeText(pdStream);
        }
        if (!pdfDoc.isFormXObjectEnabled()) {
            if (newStream == null) {
                newStream = (String) clonedVersion.get(key);
                if (newStream == null) {
                    PDFWriter writer = new PDFWriter(uniqueName, currentMCID);
                    newStream = writer.writeText(pdStream);
                    clonedVersion.put(key, newStream);
                }
            }
            pdStream = new PDStream(sourceDoc, new ByteArrayInputStream(newStream.getBytes(PDFDocument.ENCODING)));
        }
        mergeXObj(sourcePageResources, fontinfo, uniqueName);

        List<COSName> exclude = Collections.singletonList(COSName.PATTERN);
        PDFDictionary pageResources =
                (PDFDictionary)cloneForNewDocument(sourcePageResources, sourcePageResources, exclude);

        updateMergeFontInfo(pageResources, fontinfo);
        updateXObj(sourcePageResources, pageResources);
        if (fontsBackup != null) {
            sourcePageResources.setItem(COSName.FONT, fontsBackup);
        }

        COSStream originalPageContents = pdStream.getCOSObject();

        bindOptionalContent(sourceDoc);

        PDFStream pageStream;
        Set filter;
//        if (originalPageContents instanceof COSStreamArray) {
//            COSStreamArray array = (COSStreamArray)originalPageContents;
//            pageStream = new PDFStream();
//            InputStream in = array.getUnfilteredStream();
//            OutputStream out = pageStream.getBufferOutputStream();
//            IOUtils.copyLarge(in, out);
//            filter = FILTER_FILTER;
//        } else {
            pageStream = (PDFStream)cloneForNewDocument(originalPageContents, originalPageContents, exclude);
            filter = Collections.EMPTY_SET;
//        }
        if (pageStream == null) {
            pageStream = new PDFStream();
        }

        if (pdfDoc.isFormXObjectEnabled()) {
            return getFormXObject(pageResources, pageStream, key, sourcePage);
        }

        if (originalPageContents != null) {
            transferDict(originalPageContents, pageStream, filter);
        }

        transferPageDict(fonts, uniqueName, sourcePageResources);

        patternUtil.promotePatterns();

        PDRectangle mediaBox = sourcePage.getMediaBox();
        PDRectangle cropBox = sourcePage.getCropBox();
        PDRectangle viewBox = cropBox != null ? cropBox : mediaBox;

        //Handle the /Rotation entry on the sourcePage dict
        int rotation = PDFUtil.getNormalizedRotation(sourcePage);

        //Transform to FOP's user space
        float w = (float)destRect.getWidth() / 1000f;
        float h = (float)destRect.getHeight() / 1000f;
        if (rotation == 90 || rotation == 270) {
            float tmp = w;
            w = h;
            h = tmp;
        }
        pageAdjust.setTransform(AffineTransform.getScaleInstance(w / viewBox.getWidth(), h / viewBox.getHeight()));
        pageAdjust.translate(0, viewBox.getHeight());
        pageAdjust.rotate(-Math.PI);
        pageAdjust.scale(-1, 1);
        pageAdjust.translate(-viewBox.getLowerLeftX(), -viewBox.getLowerLeftY());

        PDFBoxAdapterUtil.rotate(rotation, viewBox, pageAdjust);

        StringBuilder boxStr = new StringBuilder();
        boxStr.append(PDFNumber.doubleOut(mediaBox.getLowerLeftX())).append(' ')
                .append(PDFNumber.doubleOut(mediaBox.getLowerLeftY())).append(' ')
                .append(PDFNumber.doubleOut(mediaBox.getWidth())).append(' ')
                .append(PDFNumber.doubleOut(mediaBox.getHeight())).append(" re W n\n");
        return boxStr.toString() + IOUtils.toString(pdStream.createInputStream(), PDFDocument.ENCODING);
    }