// // 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 GrapeCity.Documents.Pdf.Annotations; using System.Collections.Generic; using GrapeCity.Documents.Common; namespace DsPdfWeb.Demos { // This example shows how to find all occurrences of a phrase in a PDF document and // highlight all those occurrences using the text markup squiggly underline annotation. // To ensure that all occurrences of the phrase ("javascript framework") are found // even if the words are separated by a line break, a regular expressions is used // in the search string. public class FindAndSquiggly { public int CreatePDF(Stream stream) { // Load the PDF: var doc = new GcPdfDocument(); using var fs = File.OpenRead(Path.Combine("Resources", "PDFs", "CompleteJavaScriptBook.pdf")); doc.Load(fs); // Find all occurrences of the phrase "javascript framework" using regex so that // words separated by line breaks are found: var ft = new FindTextParams("javascript\\s+framework", wholeWord: false, matchCase: false, regex: true); var found = doc.FindText(ft, null); // Add a text markup annotation to wavy underline each occurrence: foreach (var f in found) { var markup = new TextMarkupAnnotation() { Page = doc.Pages[f.PageIndex], MarkupType = TextMarkupType.Squiggly, Color = Color.Magenta }; List<Quadrilateral> area = new List<Quadrilateral>(); foreach (var b in f.Bounds) area.Add(b); markup.Area = area; } // Done: doc.Save(stream); return doc.Pages.Count; } } }