//// 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.Text;using GrapeCity.Documents.Pdf.Annotations;using GrapeCity.Documents.Pdf.Actions;
namespace DsPdfWeb.Demos.Basics{    // Shows how to associate a PDF action with a JavaScript script.    // In this example the script is associated with a link on a page.    // Note that JavaScript may not work in some PDF viewers (e.g. built-in browser viewers).    // See JavaScript for Acrobat for details.    public class JavaScriptAction    {        const string js =            "var cChoice = app.popUpMenu(\"Introduction\", \" - \", \"Chapter 1\",\r\n" +            "[ \"Chapter 2\", \"Chapter 2 Start\", \"Chapter 2 Middle\",\r\n" +            "[\"Chapter 2 End\", \"The End\"]]);\r\n" +            "app.alert(\"You chose the '\" + cChoice + \"' menu item\");";
        public int CreatePDF(Stream stream)        {            var doc = new GcPdfDocument();            var g = doc.NewPage().Graphics;            var jsAction = new ActionJavaScript(js);            var tf = new TextFormat()            {                Font = StandardFonts.Times,                FontSize = 14            };            // Draw the link string in a rectangle:            var text = "Click this to show the popup menu.";            var rect = new RectangleF(new PointF(72, 72), g.MeasureString(text, tf));            g.FillRectangle(rect, Color.LightGoldenrodYellow);            g.DrawString(text, tf, rect);            var result = new LinkAnnotation(rect, jsAction);            doc.Pages.Last.Annotations.Add(result);            // Add warning about this possibly not working in a browser:            Common.Util.AddNote(                "Note that JavaScript may not work in some PDF viewers such as built-in browser viewers.",                doc.Pages.Last, new RectangleF(rect.X, rect.Bottom + 36, 400, 400));            // Done:            doc.Save(stream);            return doc.Pages.Count;        }    }}