questions.ocg.LockedLayers.java Source code

Introduction

Here is the source code for questions.ocg.LockedLayers.java

Source

/*
 * This example was written by Bruno Lowagie, author of the book
 * 'iText in Action' by Manning Publications (ISBN: 1932394796).
 * You can use this example as inspiration for your own applications.
 * The following license applies:
 * http://www.1t3xt.com/about/copyright/index.php?page=MIT
 */

package questions.ocg;

import java.io.FileOutputStream;
import java.io.IOException;
import java.util.ArrayList;

import com.lowagie.text.Document;
import com.lowagie.text.DocumentException;
import com.lowagie.text.Element;
import com.lowagie.text.Phrase;
import com.lowagie.text.pdf.ColumnText;
import com.lowagie.text.pdf.PdfContentByte;
/*
 * This example was written by Bruno Lowagie, author of the book
 * 'iText in Action' by Manning Publications (ISBN: 1932394796).
 * You can use this example as inspiration for your own applications.
 * The following license applies:
 * http://www.1t3xt.com/about/copyright/index.php?page=MIT
 */

import com.lowagie.text.pdf.PdfLayer;
import com.lowagie.text.pdf.PdfWriter;

public class LockedLayers {

    public final static String RESULT = "results/questions/ocg/locked_layers.pdf";

    public static void main(String[] args) {
        Document document = new Document();
        try {
            PdfWriter writer = PdfWriter.getInstance(document, new FileOutputStream(RESULT));
            writer.setPdfVersion(PdfWriter.VERSION_1_5);
            writer.setViewerPreferences(PdfWriter.PageModeUseOC);
            document.open();
            PdfContentByte cb = writer.getDirectContent();

            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);
            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();

            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();

            writer.lockLayer(nested_1);
            writer.lockLayer(layer2);
        } catch (DocumentException de) {
            System.err.println(de.getMessage());
        } catch (IOException ioe) {
            System.err.println(ioe.getMessage());
        }

        document.close();
    }
}