//// This code is part of Document Solutions for PDF .NET demos.// Copyright (c) MESCIUS inc. All rights reserved.//using System.IO;using System.Drawing;using GrapeCity.Documents.Pdf;using GrapeCity.Documents.Pdf.Annotations;using DsPdfWeb.Demos.Common;
namespace DsPdfWeb.Demos.Basics{    // Demonstrates how to create destinations and associate them with    // outline nodes or links in the document body.    public class Destinations    {        public int CreatePDF(Stream stream)        {            var doc = new GcPdfDocument();
            var page0 = doc.NewPage();            var page1 = doc.NewPage();            var page2 = doc.NewPage();
            var mainNote = Util.AddNote(                "This is page 1.\n\n\n" +                "Demo of various destination types.\n\n" +                "Destinations attached to nodes in the document's outline tree:\n" +                "  - Page 1: goes to this page, fits whole page\n" +                "  - Page 2: goes to page 2, fits whole page\n" +                "    -- Note 2, zoom 200%: goes to note 2 on page 2, zooms to 200%\n" +                "    -- Zoom 100%: zooms to whole page 2\n" +                "    -- Back to page 1: goes back to this page\n" +                "  - Page 3: goes to page 3, fits whole page\n" +                "    -- Zoom to note on page 3: zooms to whole note on page 3\n" +                "    -- Back to page 1: goes back to this page\n" +                "  - Named destinations: keyed by names in NamedDestinations dictionary:\n" +                "    -- page1\n" +                "    -- page2\n" +                "    -- page3\n\n" +                "Destinations associated with areas in the document body:",                page0);            Util.AddNote(                "This is page 2.",                page1);            var noteOnPage2 = Util.AddNote(                "Note 2 on page 2.",                page1, new RectangleF(300, 400, 200, 300));            Util.AddNote(                "This is page 3",                page2);            var noteOnPage3 = Util.AddNote(                "This is a somewhat longer\n(even though not really long)\nnote on page 3.",                page2, new RectangleF(200, 440, 200, 300));
            // Destinations in the outline tree:
            // DestinationFit: fits whole page:            var on1 = new OutlineNode("Page 1", new DestinationFit(page0));            doc.Outlines.Add(on1);
            var on2 = new OutlineNode("Page 2", new DestinationFit(page1));            doc.Outlines.Add(on2);            // DestinationXYZ: allows specifying top/left coordinates and the zoom level (1 is 100%):            on2.Children.Add(new OutlineNode("Note 2, zoom 200%", new DestinationXYZ(page1, noteOnPage2.X, noteOnPage2.Y, 2)));            on2.Children.Add(new OutlineNode("Zoom 100%", new DestinationXYZ(page1, null, null, 1)));            // Add a link back to page 1:            on2.Children.Add(new OutlineNode("Back to page 1", new DestinationFit(page0)));
            var on3 = new OutlineNode("Page 3", new DestinationFit(page2));            doc.Outlines.Add(on3);            // DestinationFitR: fits a rectangle on page:            on3.Children.Add(new OutlineNode("Zoom to note on page 3", new DestinationFitR(2, noteOnPage3)));            // Add links back to page 1 & 2:            on3.Children.Add(new OutlineNode("Go to page 2", new DestinationFit(page1)));            on3.Children.Add(new OutlineNode("Go to page 1", new DestinationFit(page0)));
            // Destinations in the document body (reusing destinations from the outlines):            // Go to page 2:            var rc = Util.AddNote("Go to page 2", page0, new RectangleF(72, mainNote.Bottom + 18, 200, 72));            page0.Annotations.Add(new LinkAnnotation(rc, on2.Dest));            // Go to page 3:            rc = Util.AddNote("Go to page 3", page0, new RectangleF(72, rc.Bottom + 18, 200, 72));            page0.Annotations.Add(new LinkAnnotation(rc, on3.Dest));
            // Destinations can also be named and added to the document's NamedDestinations dictionary.            doc.NamedDestinations.Add("page1", new DestinationFit(page0));            doc.NamedDestinations.Add("page2", new DestinationFit(page1));            doc.NamedDestinations.Add("page3", new DestinationFit(page2));            // Then they can be referenced using DestinationRef class, here we add them to the outline:            var onNamed = new OutlineNode("Named destinations", (DestinationBase)null);            doc.Outlines.Add(onNamed);            onNamed.Children.Add(new OutlineNode("Named: page1", new DestinationRef("page1")));            onNamed.Children.Add(new OutlineNode("Named: page2", new DestinationRef("page2")));            onNamed.Children.Add(new OutlineNode("Named: page3", new DestinationRef("page3")));
            // Done:            doc.Save(stream);            return doc.Pages.Count;        }    }}