Java 类com.itextpdf.text.pdf.PdfIndirectReference 实例源码

@Override
protected void configurePDFWriter(PdfWriter writer) throws IOException {

    final boolean initialPrecisionFlat = ByteBuffer.HIGH_PRECISION;
    try {
        ByteBuffer.HIGH_PRECISION = true;

        PdfDictionary dicMeasure = new PdfDictionary(new PdfName("Measure"));
        dicMeasure.put(PdfName.SUBTYPE, new PdfName("GEO"));

        PdfArray bounds = new PdfArray();
        // lower left, upper left, upper right, lower right
        bounds.add(new float[]{0f, 0f, 0f, 1f, 1f, 1f, 1f, 0f});

        // geographic coordinates of corner points as lat/lon pairs
        PdfArray gpts = new PdfArray(lonLatCornerPoints);
        // lower left, upper left, upper right, lower right
        PdfArray lpts = new PdfArray(new float[]{0f, 0f, 0f, 1f, 1f, 1f, 1f, 0f});

        dicMeasure.put(new PdfName("Bounds"), bounds);
        dicMeasure.put(new PdfName("LPTS"), lpts);
        dicMeasure.put(new PdfName("GPTS"), gpts);

        PdfDictionary dicGCS = new PdfDictionary(new PdfName("PROJCS"));
        dicGCS.put(new PdfName("WKT"), new PdfString(wkt));

        PdfIndirectObject indObjGCS = writer.addToBody(dicGCS);
        PdfIndirectReference indRefGCS = indObjGCS.getIndirectReference();
        dicMeasure.put(new PdfName("GCS"), indRefGCS);

        PdfDictionary viewport = new PdfDictionary(new PdfName("Viewport"));

        viewport.put(new PdfName("Name"), new PdfString("Scree"));

        float left = (float) xToPagePx(pageFormat.getPageLeft());
        float lower = (float) yToPagePx(pageFormat.getPageBottom());
        float right = (float) xToPagePx(pageFormat.getPageRight());
        float upper = (float) yToPagePx(pageFormat.getPageTop());
        viewport.put(new PdfName("BBox"), new PdfRectangle(left, lower, right, upper));

        PdfIndirectObject indObjMeasure = writer.addToBody(dicMeasure);
        PdfIndirectReference indRefMeasure = indObjMeasure.getIndirectReference();
        viewport.put(new PdfName("Measure"), indRefMeasure);

        writer.setPageViewport(new PdfArray(viewport));

    } finally {
        ByteBuffer.HIGH_PRECISION = initialPrecisionFlat;
    }
}

@Override
public void exportElement(JRPdfExporterContext exporterContext, JRGenericPrintElement element) {
    try {
        PdfWriter writer = exporterContext.getPdfWriter();
        PdfIndirectObject swfRef;
        boolean newContext = !existingContexts.containsKey(exporterContext);
        if (newContext) {
            PdfDictionary extensions = new PdfDictionary();
            PdfDictionary adobeExtension = new PdfDictionary();
            adobeExtension.put(new PdfName("BaseVersion"), PdfWriter.PDF_VERSION_1_7);
            adobeExtension.put(new PdfName("ExtensionLevel"), new PdfNumber(3));
            extensions.put(new PdfName("ADBE"), adobeExtension);
            writer.getExtraCatalog().put(new PdfName("Extensions"), extensions);

            byte[] swfData = getChartSwf();
            PdfFileSpecification swfFile = PdfFileSpecification.fileEmbedded(writer, null, "Open Flash Chart", swfData);
            swfRef = writer.addToBody(swfFile);
            existingContexts.put(exporterContext, swfRef);
        }
        else {
            swfRef = (PdfIndirectObject) existingContexts.get(exporterContext);
        }

        Rectangle rect = new Rectangle(element.getX() + exporterContext.getOffsetX(),
                exporterContext.getExportedReport().getPageHeight() - element.getY() - exporterContext.getOffsetY(),
                element.getX() + exporterContext.getOffsetX() + element.getWidth(),
                exporterContext.getExportedReport().getPageHeight() - element.getY() - exporterContext.getOffsetY() - element.getHeight());
        PdfAnnotation ann = new PdfAnnotation(writer, rect);
        ann.put(PdfName.SUBTYPE, new PdfName("RichMedia"));

        PdfDictionary settings = new PdfDictionary();
        PdfDictionary activation = new PdfDictionary();
        activation.put(new PdfName("Condition"), new PdfName("PV"));
        settings.put(new PdfName("Activation"), activation);
        ann.put(new PdfName("RichMediaSettings"), settings);

        PdfDictionary content = new PdfDictionary();

        HashMap<String, PdfIndirectReference> assets = new HashMap<String, PdfIndirectReference>();
        assets.put("map.swf", swfRef.getIndirectReference());
        PdfDictionary assetsDictionary = PdfNameTree.writeTree(assets, writer);
        content.put(new PdfName("Assets"), assetsDictionary);

        PdfArray configurations = new PdfArray();
        PdfDictionary configuration = new PdfDictionary();

        PdfArray instances = new PdfArray();
        PdfDictionary instance = new PdfDictionary();
        instance.put(new PdfName("Subtype"), new PdfName("Flash"));
        PdfDictionary params = new PdfDictionary();

        String chartData = ((ChartGenerator) element.getParameterValue(ChartGenerator.PARAMETER_CHART_GENERATOR)).generateChart();
        String vars = "inline_data=" + chartData;
        params.put(new PdfName("FlashVars"), new PdfString(vars));
        instance.put(new PdfName("Params"), params);
        instance.put(new PdfName("Asset"), swfRef.getIndirectReference());
        PdfIndirectObject instanceRef = writer.addToBody(instance);
        instances.add(instanceRef.getIndirectReference());
        configuration.put(new PdfName("Instances"), instances);

        PdfIndirectObject configurationRef = writer.addToBody(configuration);
        configurations.add(configurationRef.getIndirectReference());
        content.put(new PdfName("Configurations"), configurations);

        ann.put(new PdfName("RichMediaContent"), content);

        writer.addAnnotation(ann);
    }
    catch (Exception e) {
        throw new RuntimeException(e);
    }
}