Examples of org.apache.fop.area.PageViewport

org.apache.fop.area.PageViewport
Page viewport that specifies the viewport area and holds the page contents. This is the top level object for a page and remains valid for the life of the document and the area tree. This object may be used as a key to reference a page. This is the level that creates the page. The page (reference area) is then rendered inside the page object

     * @param viewHeight height of the view
     * @return the requested scale factor
     * @throws FOPException in case of an error while fetching the PageViewport
     */
    public double getScaleToFit(double viewWidth, double viewHeight) throws FOPException {
        PageViewport pageViewport = renderer.getPageViewport(currentPage);
        Rectangle2D pageSize = pageViewport.getViewArea();
        double widthScale = viewWidth / (pageSize.getWidth() / 1000f);
        double heightScale = viewHeight / (pageSize.getHeight() / 1000f);
        return Math.min(displayMode == CONT_FACING ? widthScale / 2 : widthScale, heightScale);
    }

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    }


    private void renderDestination(DestinationData dd) {
        String targetID = dd.getIDRef();
        if (targetID != null && targetID.length() > 0) {
            PageViewport pv = dd.getPageViewport();
            if (pv == null) {
                log.warn("Unresolved destination item received: " + dd.getIDRef());
            }
            PDFGoTo gt = getPDFGoToForID(targetID, pv.getKey());
            pdfDoc.getFactory().makeDestination(
                    dd.getIDRef(), gt.makeReference());
        } else {
            log.warn("DestinationData item with null or empty IDRef received.");
        }

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                                    PDFOutline parentBookmarkItem) {
        PDFOutline pdfOutline = null;


        String targetID = bookmarkItem.getIDRef();
        if (targetID != null && targetID.length() > 0) {
            PageViewport pv = bookmarkItem.getPageViewport();
            if (pv != null) {
                String pvKey = pv.getKey();
                PDFGoTo gt = getPDFGoToForID(targetID, pvKey);
                // create outline object:
                PDFOutline parent = parentBookmarkItem != null
                    ? parentBookmarkItem
                    : pdfDoc.getOutlineRoot();

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            while (page < 0 && doc && seq > 1) {
                seq--;
                page = areaTreeModel.getPageCount(seq) - 1;
            }
            while (page >= 0) {
                PageViewport pv = areaTreeModel.getPage(seq, page);
                mark = (Marker)pv.getMarker(name, Constants.EN_LEWP);
                if (mark != null) {
                    break;
                }
                page--;
                if (page < 0 && doc && seq > 1) {

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    private void renderBookmarkItem(BookmarkData bm) {
        atts.clear();
        addAttribute("title", bm.getBookmarkTitle());
        addAttribute("show-children", String.valueOf(bm.showChildItems()));
        PageViewport pv = bm.getPageViewport();
        String pvKey = pv == null ? null : pv.getKey();
        addAttribute("internal-link",
                     InternalLink.makeXMLAttribute(pvKey, bm.getIDRef()));
        startElement("bookmark", atts);
        for (int i = 0; i < bm.getCount(); i++) {
            renderBookmarkItem(bm.getSubData(i));

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    protected void renderDestination(DestinationData destination) {
        if (destination.getWhenToProcess() == OffDocumentItem.END_OF_DOC) {
            endPageSequence();
        }
        atts.clear();
        PageViewport pv = destination.getPageViewport();
        String pvKey = pv == null ? null : pv.getKey();
        addAttribute("internal-link",
                InternalLink.makeXMLAttribute(pvKey, destination.getIDRef()));
        startElement("destination", atts);
        endElement("destination");
    }

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     * @param viewHeight height of the view
     * @return the requested scale factor
     * @throws FOPException in case of an error while fetching the PageViewport
     */
    public double getScaleToFit(double viewWidth, double viewHeight) throws FOPException {
        PageViewport pageViewport = renderer.getPageViewport(currentPage);
        Rectangle2D pageSize = pageViewport.getViewArea();
        float screenResolution = Toolkit.getDefaultToolkit().getScreenResolution();
        float screenFactor = screenResolution / UnitConv.IN2PT;
        double widthScale = viewWidth / (pageSize.getWidth() / 1000f) / screenFactor;
        double heightScale = viewHeight / (pageSize.getHeight() / 1000f) / screenFactor;
        return Math.min(displayMode == CONT_FACING ? widthScale / 2 : widthScale, heightScale);

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                eventProducer.stoppingAfterFirstPageNoFilename(this);
                break;
            }
            try {
                // Do the rendering: get the image for this page
                PageViewport pv = (PageViewport)pageViewportList.get(i);
                RenderedImage image = (RenderedImage)getPageImage(pv);


                // Encode this image
                if (log.isDebugEnabled()) {
                    log.debug("Encoding page " + (i + 1));

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    private void renderBookmarkItem(BookmarkData bm) {
        atts.clear();
        addAttribute("title", bm.getBookmarkTitle());
        addAttribute("show-children", String.valueOf(bm.showChildItems()));
        PageViewport pv = bm.getPageViewport();
        String pvKey = pv == null ? null : pv.getKey();
        addAttribute("internal-link",
                     InternalLink.makeXMLAttribute(pvKey, bm.getIDRef()));
        startElement("bookmark", atts);
        for (int i = 0; i < bm.getCount(); i++) {
            renderBookmarkItem(bm.getSubData(i));

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    protected void renderDestination(DestinationData destination) {
        if (destination.getWhenToProcess() == OffDocumentItem.END_OF_DOC) {
            endPageSequence();
        }
        atts.clear();
        PageViewport pv = destination.getPageViewport();
        String pvKey = pv == null ? null : pv.getKey();
        addAttribute("internal-link",
                InternalLink.makeXMLAttribute(pvKey, destination.getIDRef()));
        startElement("destination", atts);
        endElement("destination");
    }

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org.apache.fop.layoutmgr.ExternalDocumentLayoutManager

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