// // 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 System.Text; using GrapeCity.Documents.Pdf; using GrapeCity.Documents.Text; using GrapeCity.Documents.Drawing; using GCTEXT = GrapeCity.Documents.Text; using GCDRAW = GrapeCity.Documents.Drawing; namespace DsPdfWeb.Demos { // This sample shows how to add output intents to a PDF. // It adds several versions of the ICC Probe Profile // which deliberately distorts the rendered colors, so that it is easy // to make sure that a profile is actually being used. To see the effect // in this PDF, you may open it in Adobe Acrobat Reader DC, and set the // Edit | Preferences | Page Display | Show Overprint Preview option to 'Always'. // Then the deliberate color distortion added by the Probe Profile will be obvious. // For details please see the "Output Intents" section of the PDF Specification. public class OutputIntents { public int CreatePDF(Stream stream) { // The different versions of the ICC Probe profile: var profiles = new (string, string)[] { ("Probev2_ICCv4.icc", @"https://www.color.org/probeprofile.xalter"), ("Probev1_ICCv4.icc", @"https://www.color.org/probeprofile.xalter"), ("Probev1_ICCv2.icc", @"https://www.color.org/probeprofile.xalter"), }; // var doc = new GcPdfDocument(); var page = doc.NewPage(); var g = page.Graphics; var sb = new StringBuilder(); const string bullet = "\x2022\x2003"; sb.AppendLine("This document contains the following output intents (first one is the default):"); int i = 0; foreach (var profile in profiles) { sb.AppendLine($"{bullet}{profile.Item1}, source: {profile.Item2}"); using (FileStream fs = File.OpenRead(Path.Combine("Resources", "Misc", profile.Item1))) { var oi = OutputIntent.Create($"Output intent testing {i++}", "", "http://www.color.org", profile.Item1, fs); doc.OutputIntents.Add(oi); } } sb.AppendLine( "Colors processed via the ICC Probe Profile are deliberately distorted, " + "so that it is easy to visually confirm that a profile is being used. " + "To see the effect in this PDF, you may open it in Adobe Acrobat Reader DC and make sure that " + "Edit | Preferences | Page Display | Show Overprint Preview is set to 'Always', " + "then the deliberate color distortion will be obvious."); var rc = Common.Util.AddNote(sb.ToString(), page); g.DrawImage(GCDRAW.Image.FromFile(Path.Combine("Resources", "Images", "roofs.jpg")), new RectangleF(rc.Left, rc.Bottom + 24, rc.Width, rc.Width), null, ImageAlign.StretchImage); // doc.Save(stream); return doc.Pages.Count; } } }