// ===========================================================================
public void Write(Stream stream)
{
// step 1
using (Document document = new Document()) {
// step 2
PdfWriter writer = PdfWriter.GetInstance(document, stream);
writer.PdfVersion = PdfWriter.VERSION_1_5;
// step 3
document.Open();
// step 4
PdfContentByte cb = writer.DirectContent;
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.On = true;
PdfLayer radio2 = new PdfLayer("Radiogroup: layer 2", writer);
radio2.On = false;
PdfLayer radio3 = new PdfLayer("Radiogroup: layer 3", writer);
radio3.On = false;
radiogroup.AddChild(radio1);
radiogroup.AddChild(radio2);
radiogroup.AddChild(radio3);
List <PdfLayer> options = new List <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.OnPanel = 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.OnPanel = 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();
}
}