// // This code is part of Document Solutions for PDF demos. // Copyright (c) MESCIUS inc. All rights reserved. // using System; 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; } } }