// // This code is part of Document Solutions for PDF demos. // Copyright (c) MESCIUS inc. All rights reserved. // using System; using System.IO; using System.Linq; using System.Collections.Generic; using GrapeCity.Documents.Pdf; using GrapeCity.Documents.Pdf.Layers; using GrapeCity.Documents.Pdf.Annotations; using GrapeCity.Documents.Pdf.Graphics; using GrapeCity.Documents.Text; using GrapeCity.Documents.Drawing; namespace DsPdfWeb.Demos { // This sample creates a multi-layer PDF document from a set of PDFs // each of which shows a certain part of an electrical plan of a house. // Each PDF is added as a separate layer. The resulting PDF provides // optional content that allows the user to selectively see parts of // the electrical wiring of a house (e.g. just the HVAC setup, or // just the outlets, etc.). // Note that this example is similar to HousePlanLayers, but unlike // that sample, here ALL content is added as layers (in HousePlanLayers, // the full electrical plan content does not belong to any layer). public class HousePlanAllLayers { public int CreatePDF(Stream stream) { // The list of PDF names' parts identifying their semantics: string[] fnames = [ "full_electrical_plan.pdf", "all_outlets.pdf", "data_plan_and_detectors.pdf", "HVAC_with_wiring.pdf", "lighting_plan.pdf", "lighting_plan_with_wiring.pdf", "security_system_plan.pdf", ]; // The common base name: var fbase = "how_to_read_electrical_plans_"; // The directory containing the PDFs: var dir = Path.Combine("Resources", "PDFs"); var doc = new GcPdfDocument(); var page = doc.Pages.Add(); var g = page.Graphics; var disposables = new List<IDisposable>(); // Combine all PDFs into a single document as layers on the first page: for (int i = 0; i < fnames.Length; ++i) { var iname = fnames[i]; var idoc = new GcPdfDocument(); var ifs = File.OpenRead(Path.Combine(dir, fbase + iname)); idoc.Load(ifs); disposables.Add(ifs); doc.OptionalContent.AddLayer(iname); doc.OptionalContent.SetLayerDefaultState(iname, false); g.BeginLayer(iname); g.DrawPdfPage(idoc.Pages[0], page.Bounds); g.EndLayer(); } // Make the last layer visible by default: doc.OptionalContent.SetLayerDefaultState(fnames.Last(), true); // Save the PDF: doc.Save(stream); // Dispose file streams: disposables.ForEach(d_ => d_.Dispose()); return doc.Pages.Count; } } }