Example usage for com.lowagie.text.pdf PdfStamper getPdfLayers

Introduction

In this page you can find the example usage for com.lowagie.text.pdf PdfStamper getPdfLayers.

Prototype

public Map getPdfLayers() 

Source Link

Document

Gets the PdfLayer objects in an existing document as a Map with the names/titles of the layers as keys.

Usage

From source file:questions.ocg.AddOptionalContentToExistingPdf.java

public static void main(String[] args) throws IOException, DocumentException {
    // creating an empty document
    Document document = new Document();
    PdfWriter writer = PdfWriter.getInstance(document, new FileOutputStream(RESULT01));
    writer.setPdfVersion(PdfWriter.VERSION_1_5);
    document.open();/* www.j a  va  2 s .  c o m*/
    writer.setPageEmpty(false);
    document.close();

    PdfReader reader = new PdfReader(RESULT01);
    PdfStamper stamper = new PdfStamper(reader, new FileOutputStream(RESULT02));
    PdfContentByte cb = stamper.getOverContent(1);
    writer = stamper.getWriter();
    PdfLayer nested = new PdfLayer("Nested Layers", writer);
    PdfLayer nested_1 = new PdfLayer("Nested Layer 1", writer);
    PdfLayer nested_2 = new PdfLayer("Nested Layer 2", writer);
    PdfLayer layer21 = new PdfLayer("Layer 2", writer);
    PdfLayer layer22 = new PdfLayer("Layer 2", writer);
    nested_2.addChild(layer21);
    nested_2.addChild(layer22);
    nested.addChild(nested_1);
    nested.addChild(nested_2);
    cb.beginLayer(nested);
    ColumnText.showTextAligned(cb, Element.ALIGN_LEFT, new Phrase("nested layers"), 50, 775, 0);
    cb.endLayer();
    cb.beginLayer(nested_1);
    ColumnText.showTextAligned(cb, Element.ALIGN_LEFT, new Phrase("nested layer 1"), 100, 800, 0);
    cb.endLayer();
    cb.beginLayer(nested_2);
    ColumnText.showTextAligned(cb, Element.ALIGN_LEFT, new Phrase("nested layer 2"), 100, 750, 0);
    cb.endLayer();
    cb.beginLayer(layer21);
    ColumnText.showTextAligned(cb, Element.ALIGN_LEFT, new Phrase("layer 2.1 in the group"), 150, 775, 0);
    cb.endLayer();
    cb.beginLayer(layer22);
    ColumnText.showTextAligned(cb, Element.ALIGN_LEFT, new Phrase("layer 2.2 in the group"), 150, 725, 0);
    cb.endLayer();
    PdfLayer group = PdfLayer.createTitle("Grouped layers", writer);
    PdfLayer layer1 = new PdfLayer("Group: layer 1", writer);
    PdfLayer layer2 = new PdfLayer("Group: layer 2", writer);
    group.addChild(layer1);
    group.addChild(layer2);
    cb.beginLayer(layer1);
    ColumnText.showTextAligned(cb, Element.ALIGN_LEFT, new Phrase("layer 1 in the group"), 50, 700, 0);
    cb.endLayer();
    cb.beginLayer(layer2);
    ColumnText.showTextAligned(cb, Element.ALIGN_LEFT, new Phrase("layer 2 in the group"), 50, 675, 0);
    cb.endLayer();
    PdfLayer radiogroup = PdfLayer.createTitle("Radio Group", writer);
    PdfLayer radio1 = new PdfLayer("Radiogroup: layer 1", writer);
    radio1.setOn(true);
    PdfLayer radio2 = new PdfLayer("Radiogroup: layer 2", writer);
    radio2.setOn(false);
    PdfLayer radio3 = new PdfLayer("Radiogroup: layer 3", writer);
    radio3.setOn(false);
    radiogroup.addChild(radio1);
    radiogroup.addChild(radio2);
    radiogroup.addChild(radio3);
    ArrayList<PdfLayer> options = new ArrayList<PdfLayer>();
    options.add(radio1);
    options.add(radio2);
    options.add(radio3);
    writer.addOCGRadioGroup(options);
    cb.beginLayer(radio1);
    ColumnText.showTextAligned(cb, Element.ALIGN_LEFT, new Phrase("option 1"), 50, 600, 0);
    cb.endLayer();
    cb.beginLayer(radio2);
    ColumnText.showTextAligned(cb, Element.ALIGN_LEFT, new Phrase("option 2"), 50, 575, 0);
    cb.endLayer();
    cb.beginLayer(radio3);
    ColumnText.showTextAligned(cb, Element.ALIGN_LEFT, new Phrase("option 3"), 50, 550, 0);
    cb.endLayer();
    PdfLayer not_printed = new PdfLayer("not printed", writer);
    not_printed.setOnPanel(false);
    not_printed.setPrint("Print", false);
    cb.beginLayer(not_printed);
    ColumnText.showTextAligned(cb, Element.ALIGN_CENTER, new Phrase("PRINT THIS PAGE"), 300, 700, 90);
    cb.endLayer();
    PdfLayer zoom = new PdfLayer("Zoom 0.75-1.25", writer);
    zoom.setOnPanel(false);
    zoom.setZoom(0.75f, 1.25f);
    cb.beginLayer(zoom);
    ColumnText.showTextAligned(cb, Element.ALIGN_LEFT,
            new Phrase("Only visible if the zoomfactor is between 75 and 125%"), 30, 530, 90);
    cb.endLayer();
    stamper.close();

    reader = new PdfReader(RESULT02);
    stamper = new PdfStamper(reader, new FileOutputStream(RESULT03));
    Map ocg = stamper.getPdfLayers();
    for (Iterator i = ocg.keySet().iterator(); i.hasNext();) {
        System.out.println(i.next());
    }
    PdfLayer layer = (PdfLayer) ocg.get("Layer 2");
    layer.setOn(false);
    cb = stamper.getOverContent(1);
    cb.beginLayer(layer);
    cb.moveTo(0, 0);
    cb.lineTo(500, 500);
    cb.stroke();
    cb.endLayer();
    PdfLayer parent = (PdfLayer) ocg.get("Layer 2(2)");
    PdfLayer newLayer = new PdfLayer("Child layer", stamper.getWriter());
    newLayer.setOn(false);
    parent.addChild(newLayer);
    cb.beginLayer(newLayer);
    cb.moveTo(0, 500);
    cb.lineTo(500, 0);
    cb.stroke();
    cb.endLayer();
    stamper.close();
}

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