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Examples in answer to questions such as:
AddOCG.java
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/**
* Example written by Bruno Lowagie in answer to:
* http://stackoverflow.com/questions/27956833/adding-comment-on-pdf-layer-created-using-itextsharp-in-adobe-reader
*/
package sandbox.stamper;
import com.itextpdf.text.DocumentException;
import com.itextpdf.text.Element;
import com.itextpdf.text.Phrase;
import com.itextpdf.text.pdf.ColumnText;
import com.itextpdf.text.pdf.PdfContentByte;
import com.itextpdf.text.pdf.PdfLayer;
import com.itextpdf.text.pdf.PdfReader;
import com.itextpdf.text.pdf.PdfStamper;
import com.itextpdf.text.pdf.PdfWriter;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Map;
import sandbox.WrapToTest;
@WrapToTest
public class AddOCG {
public static final String SRC = "resources/pdfs/hello.pdf";
public static final String DEST = "results/stamper/hello_ocg.pdf";
public static void main(String[] args) throws IOException, DocumentException {
File file = new File(DEST);
file.getParentFile().mkdirs();
new AddOCG().manipulatePdf(SRC, DEST);
}
public void manipulatePdf(String src, String dest) throws IOException, DocumentException {
PdfReader reader = new PdfReader(src);
PdfStamper stamper = new PdfStamper(reader, new FileOutputStream(dest));
Map<String, PdfLayer> layers = stamper.getPdfLayers();
PdfWriter writer = stamper.getWriter();
PdfContentByte cb = stamper.getOverContent(1);
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);
writer.lockLayer(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();
stamper.close();
reader.close();
}
}
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/**
* Example written by Bruno Lowagie in answer to:
* http://stackoverflow.com/questions/23280083/itextsharp-change-order-of-optional-content-groups
*/
package sandbox.stamper;
import com.itextpdf.text.DocumentException;
import com.itextpdf.text.pdf.PdfLayer;
import com.itextpdf.text.pdf.PdfReader;
import com.itextpdf.text.pdf.PdfStamper;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.Map;
import sandbox.WrapToTest;
@WrapToTest
public class ChangeOCG {
public static final String SRC = "resources/pdfs/ocg.pdf";
public static final String DEST = "results/stamper/ocg_changed.pdf";
public static void main(String[] args) throws IOException, DocumentException {
File file = new File(DEST);
file.getParentFile().mkdirs();
new ChangeOCG().manipulatePdf(SRC, DEST);
}
public void manipulatePdf(String src, String dest) throws IOException, DocumentException {
PdfReader reader = new PdfReader(src);
PdfStamper stamper = new PdfStamper(reader, new FileOutputStream(dest));
Map<String, PdfLayer> layers = stamper.getPdfLayers();
PdfLayer layer = layers.get("Nested layer 1");
layer.setOn(false);
stamper.close();
reader.close();
}
}
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/**
* Example written by Bruno Lowagie in answer to:
* http://stackoverflow.com/questions/23280083/itextsharp-change-order-of-optional-content-groups
*/
package sandbox.stamper;
import com.itextpdf.text.DocumentException;
import com.itextpdf.text.pdf.PdfArray;
import com.itextpdf.text.pdf.PdfDictionary;
import com.itextpdf.text.pdf.PdfName;
import com.itextpdf.text.pdf.PdfObject;
import com.itextpdf.text.pdf.PdfReader;
import com.itextpdf.text.pdf.PdfStamper;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import sandbox.WrapToTest;
@WrapToTest
public class ChangeOCGOrder {
public static final String SRC = "resources/pdfs/ocg.pdf";
public static final String DEST = "results/stamper/ocg_reordered.pdf";
public static void main(String[] args) throws IOException, DocumentException {
File file = new File(DEST);
file.getParentFile().mkdirs();
new ChangeOCGOrder().manipulatePdf(SRC, DEST);
}
public void manipulatePdf(String src, String dest) throws IOException, DocumentException {
PdfReader reader = new PdfReader(src);
PdfDictionary catalog = reader.getCatalog();
PdfDictionary ocProps = catalog.getAsDict(PdfName.OCPROPERTIES);
PdfDictionary occd = ocProps.getAsDict(PdfName.D);
PdfArray order = occd.getAsArray(PdfName.ORDER);
PdfObject nestedLayers = order.getPdfObject(0);
PdfObject nestedLayerArray = order.getPdfObject(1);
PdfObject groupedLayers = order.getPdfObject(2);
PdfObject radiogroup = order.getPdfObject(3);
order.set(0, radiogroup);
order.set(1, nestedLayers);
order.set(2, nestedLayerArray);
order.set(3, groupedLayers);
PdfStamper stamper = new PdfStamper(reader, new FileOutputStream(dest));
stamper.close();
reader.close();
}
}