//// 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 GCTEXT = GrapeCity.Documents.Text;using GCDRAW = GrapeCity.Documents.Drawing;
namespace DsPdfWeb.Demos.Basics{    // Generates a large PDF using a single TextLayout.    // Unlike other 'large document' samples (StartEndDoc, LargeDocument2),    // this sample actually paginates the whole document as a single sequence of paragraphs,    // optimally and correctly filling each page with text. Split options such as    // keeping at least 2 lines of paragraph on each page are also supported.    // Due to the extra work, this sample takes significantly more time to complete.    public class LargeDocument3    {        public int CreatePDF(Stream stream)        {            // Number of pages to generate:            const int N = Common.Util.LargeDocumentIterations;            var start = Common.Util.TimeNow();            var doc = new GcPdfDocument();            // Prep a TextLayout to hold/format the text:            var tl = new TextLayout(72)            {                MaxWidth = doc.PageSize.Width,                MaxHeight = doc.PageSize.Height,                MarginAll = 72,                FirstLineIndent = 36,            };            tl.DefaultFormat.Font = StandardFonts.Times;            tl.DefaultFormat.FontSize = 12;            // Generate the document:            for (int paraIdx = 0; paraIdx < N; ++paraIdx)            {                tl.AppendLine(Common.Util.LoremIpsum(1));            }            // Split and render TextLayout as shown in the PaginatedText sample:            var tso = new TextSplitOptions(tl)            {                MinLinesInFirstParagraph = 2,                MinLinesInLastParagraph = 2,            };            tl.PerformLayout(true);            // The loop splitting and rendering the layout:            var tls = new TextLayoutSplitter(tl);            for (var tlPage = tls.Split(tso); tlPage != null; tlPage = tls.Split(tso))                doc.NewPage().Graphics.DrawTextLayout(tlPage, PointF.Empty);
            tl.Clear();            // Insert a title page (cannot be done if using StartDoc/EndDoc):            tl.FirstLineIndent = 0;            var fnt = GCTEXT.Font.FromFile(Path.Combine("Resources", "Fonts", "NotoSerif-Regular.ttf"));            var tf0 = new TextFormat() { FontSize = 24, FontBold = true, Font = fnt };            tl.Append(string.Format("Large Document\n{0} Paragraphs of Lorem Ipsum\n\n", N), tf0);            var tf1 = new TextFormat(tf0) { FontSize = 14, FontItalic = true };            tl.Append(string.Format("Generated on {0} in {1:m\\m\\ s\\s\\ fff\\m\\s}.", Common.Util.TimeNow().ToString("R"), Common.Util.TimeNow() - start), tf1);            tl.TextAlignment = TextAlignment.Center;            tl.PerformLayout(true);            doc.Pages.Insert(0).Graphics.DrawTextLayout(tl, PointF.Empty);            // Done:            doc.Save(stream);            return doc.Pages.Count;        }    }}