//// 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.Text;using GrapeCity.Documents.Pdf;using GrapeCity.Documents.Pdf.TextMap;
namespace DsPdfWeb.Demos{    // This sample shows how to use the text map for a page in a PDF    // to find geometric positions of text lines on the page,    // and to locate the text at a specific position.    // The PDF used in this sample was created by TimeSheet.    public class TextMap    {        public int CreatePDF(Stream stream)        {            var doc = new GcPdfDocument();            var page = doc.NewPage();
            var rc = Common.Util.AddNote(                "This sample loads the PDF created by the TimeSheet sample into a temporary GcPdfDocument, " +                "gets the text map for the first page, and prints out the coordinates and texts of all " +                "line fragments in the map. " +                "It also uses the map's HitTest method to find the text at specific coordinates in the PDF " +                "and prints the result. " +                "The original TimeSheet.pdf used by this sample (consisting of 1 page) is appended for reference.",                page);
            // Setup text formatting and layout:            var tf = new TextFormat()            {                Font = StandardFonts.Times,                FontSize = 13            };            var tfFound = new TextFormat()            {                Font = StandardFonts.TimesBold,                FontSize = 14,                ForeColor = Color.DarkBlue            };            var tl = new TextLayout(page.Graphics.Resolution)            {                MaxWidth = doc.PageSize.Width,                MaxHeight = doc.PageSize.Height,                MarginAll = rc.Left,                MarginTop = rc.Bottom + 36,                TabStops = [ new (72 * 2) ],            };            var to = new TextSplitOptions(tl)            {                MinLinesInFirstParagraph = 2,                MinLinesInLastParagraph = 2,                RestMarginTop = rc.Left,            };
            // Open an arbitrary PDF, load it into a temp document and use the map to find some texts:            using var fs = File.OpenRead(Path.Combine("Resources", "PDFs", "TimeSheet.pdf"));            var doc1 = new GcPdfDocument();            doc1.Load(fs);            var tmap = doc1.Pages[0].GetTextMap();
            // We retrieve the text at a specific (known to us) geometric location on the page:            float tx0 = 2.1f, ty0 = 3.37f, tx1 = 3.1f, ty1 = 3.4f;            HitTestInfo htiFrom = tmap.HitTest(tx0 * 72, ty0 * 72);            HitTestInfo htiTo = tmap.HitTest(tx1 * 72, ty1 * 72);            tmap.GetFragment(htiFrom.Pos, htiTo.Pos, out TextMapFragment range1, out string text1);            tl.AppendLine($"Looked for text in rectangle x={tx0:F2}\", y={ty0:F2}\", width={tx1 - tx0:F2}\", height={ty1 - ty0:F2}\", found:", tf);            tl.AppendLine(text1, tfFound);            tl.AppendLine();
            // Get all text fragments and their locations on the page:            tl.AppendLine("List of all texts found on the page", tf);            tmap.GetFragment(out TextMapFragment range, out string text);            foreach (TextLineFragment tlf in range)            {                var coords = tmap.GetCoords(tlf);                tl.Append($"Text at ({coords.B.X / 72:F2}\",{coords.B.Y / 72:F2}\"):\t", tf);                tl.AppendLine(tmap.GetText(tlf), tfFound);            }
            // Print the results:            tl.PerformLayout(true);            while (true)            {                // 'rest' will accept the text that did not fit:                var splitResult = tl.Split(to, out TextLayout rest);                doc.Pages.Last.Graphics.DrawTextLayout(tl, PointF.Empty);                if (splitResult != SplitResult.Split)                    break;                tl = rest;                doc.NewPage();            }
            // Append the original document for reference:            doc.MergeWithDocument(doc1, new MergeDocumentOptions());            // Done:            doc.Save(stream);            return doc.Pages.Count;        }    }}