private ImageInfo loadPDF()

in src/java/org/apache/fop/render/pdf/pdfbox/PreloaderPDF.java [91:141]
37 lines of code
6 McCabe index (conditional complexity)

    private ImageInfo loadPDF(String uri, Source src, ImageContext context) throws IOException,
            ImageException {
        int selectedPage = ImageUtil.needPageIndexFromURI(uri);

        URI docURI = deriveDocumentURI(src.getSystemId());

        PDDocument pddoc = getDocument(context, docURI, src);
        pddoc = Interceptors.getInstance().interceptOnLoad(pddoc, docURI);

        //Disable the warning about a missing close since we rely on the GC to decide when
        //the cached PDF shall be disposed off.
//        pddoc.getDocument().setWarnMissingClose(false);

        int pageCount = pddoc.getNumberOfPages();
        if (selectedPage < 0 || selectedPage >= pageCount) {
            throw new ImageException("Selected page (index: " + selectedPage
                    + ") does not exist in the PDF file. The document has "
                    + pddoc.getNumberOfPages() + " pages.");
        }
        PDPage page = pddoc.getPage(selectedPage);
        PDRectangle mediaBox = page.getMediaBox();
        PDRectangle cropBox = page.getCropBox();
        PDRectangle viewBox = cropBox != null ? cropBox : mediaBox;
        int w = Math.round(viewBox.getWidth() * 1000);
        int h = Math.round(viewBox.getHeight() * 1000);

        //Handle the /Rotation entry on the page dict
        int rotation = PDFUtil.getNormalizedRotation(page);
        if (rotation == 90 || rotation == 270) {
            //Swap width and height
            int exch = w;
            w = h;
            h = exch;
        }

        ImageSize size = new ImageSize();
        size.setSizeInMillipoints(w, h);
        size.setResolution(context.getSourceResolution());
        size.calcPixelsFromSize();

        ImageInfo info = new ImageInfo(uri, ImagePDF.MIME_PDF);
        info.setSize(size);
        info.getCustomObjects().put(ImageInfo.ORIGINAL_IMAGE, new ImagePDF(info, pddoc));

        int lastPageIndex = pddoc.getNumberOfPages() - 1;
        if (selectedPage < lastPageIndex) {
            info.getCustomObjects().put(ImageInfo.HAS_MORE_IMAGES, Boolean.TRUE);
        }

        return info;
    }