// // 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.Drawing; using System.Collections.Generic; using GrapeCity.Documents.Pdf; using GrapeCity.Documents.Pdf.AcroForms; using GrapeCity.Documents.Text; using GrapeCity.Documents.Common; using GrapeCity.Documents.Drawing; using System.Security.Cryptography.X509Certificates; using GCTEXT = GrapeCity.Documents.Text; using GCDRAW = GrapeCity.Documents.Drawing; namespace DsPdfWeb.Demos { // This sample implements a scenario involving generating, filling and signing a time sheet: // - The first step is to generate a time sheet form (AcroForm PDF). // The form contains fields for employee info, working times for a week, // and employee's and supervisor's signatures. // - The next step in a real app would involve employees filling and signing the form. // In this sample, we use some randomly generated data to fill the form on behalf // of an employee. // - We then flatten the filled form - convert the text fields filled by the employee // to regular text. // - Finally, we digitally sign the flattened document on behalf of the employee's // supervisor, and save it. // // See also TimeSheetIncremental - it is essentially the same code, but uses // incremental update to digitally sign the document by both employee and supervisor. public class TimeSheet { // Font collection to hold the fonts we need: private FontCollection _fc = new FontCollection(); // The text layout used to render input fields when flattening the document: private TextLayout _inputTl = new TextLayout(72); // The text format used for input fields: private TextFormat _inputTf = new TextFormat(); private GCTEXT.Font _inputFont = StandardFonts.HelveticaBold; private float _inputFontSize = 12; // Input fields margin: private float _inputMargin = 5; // Space for employee's signature: private RectangleF _empSignRect; // This will hold the list of images so we can dispose them after saving the document: private List<IDisposable> _disposables = new List<IDisposable>(); // Main entry point of this sample: public int CreatePDF(Stream stream) { // Set up a font collection with the fonts we need: _fc.RegisterDirectory(Path.Combine("Resources", "Fonts")); // Set that font collection on input fields' text layout // (we will also set it on all text layouts that we'll use): _inputTl.FontCollection = _fc; // Set up layout and formatting for input fields: _inputTl.ParagraphAlignment = ParagraphAlignment.Center; _inputTf.Font = _inputFont; _inputTf.FontSize = _inputFontSize; // Create the time sheet input form // (in a real-life scenario, we probably would only create it once, // and then re-use the form PDF): var doc = MakeTimeSheetForm(); // At this point, 'doc' is an empty AcroForm. // In a real-life app it would be distributed to employees // for them to fill and send back. FillEmployeeData(doc); // // At this point the form is filled with employee's data. // // Supervisor data (in a real app, these would probably be fetched from a db): var supName = "Jane Donahue"; var supSignDate = Common.Util.TimeNow().ToShortDateString(); SetFieldValue(doc, _Names.EmpSuper, supName); SetFieldValue(doc, _Names.SupSignDate, supSignDate); // The next step is to 'flatten' the form: we loop over document AcroForm's fields, // drawing their current values in place, and then remove the fields. // This produces a PDF with text fields' values as part of the regular (non-editable) content: FlattenDoc(doc); // Now we digitally sign the flattened document on behalf of the 'manager': var pfxPath = Path.Combine("Resources", "Misc", "DsPdfTest.pfx"); var cert = new X509Certificate2(File.ReadAllBytes(pfxPath), "qq", X509KeyStorageFlags.MachineKeySet | X509KeyStorageFlags.PersistKeySet | X509KeyStorageFlags.Exportable); var sp = new SignatureProperties() { SignatureBuilder = new Pkcs7SignatureBuilder() { CertificateChain = new X509Certificate2[] { cert } }, Location = "DsPdfWeb - TimeSheet sample", SignerName = supName, SigningDateTime = Common.Util.TimeNow(), }; // Connect the signature field and signature props: SignatureField supSign = doc.AcroForm.Fields.First(f_ => f_.Name == _Names.SupSign) as SignatureField; sp.SignatureField = supSign; supSign.Widget.ButtonAppearance.Caption = supName; // Some browser PDF viewers do not show form fields, so we render a placeholder: supSign.Widget.Page.Graphics.DrawString("digitally signed", new TextFormat() { FontName = "Noto Sans", FontSize = 9 }, supSign.Widget.Rect); // Done, now save the document with supervisor signature: doc.Sign(sp, stream); // Dispose images only after the document is saved: _disposables.ForEach(d_ => d_.Dispose()); return doc.Pages.Count; } // Replaces any text fields in the document with regular text: private void FlattenDoc(GcPdfDocument doc) { foreach (var f in doc.AcroForm.Fields) { if (f is TextField fld) { var w = fld.Widget; var g = w.Page.Graphics; _inputTl.Clear(); _inputTl.Append(fld.Value, _inputTf); _inputTl.MaxHeight = w.Rect.Height; _inputTl.PerformLayout(true); g.DrawTextLayout(_inputTl, w.Rect.Location); } } for (int i = doc.AcroForm.Fields.Count - 1; i >= 0; --i) if (doc.AcroForm.Fields[i] is TextField) doc.AcroForm.Fields.RemoveAt(i); } // Data field names: static class _Names { public static readonly string[] Dows = new string[] { "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat", }; public const string EmpName = "empName"; public const string EmpTitle = "empTitle"; public const string EmpNum = "empNum"; public const string EmpStatus = "empStatus"; public const string EmpDep = "empDep"; public const string EmpSuper = "empSuper"; public static Dictionary<string, string[]> DtNames = new Dictionary<string, string[]>() { {"Sun", new string[] { "dtSun", "tSunStart", "tSunEnd", "tSunReg", "tSunOvr", "tSunTotal" } }, {"Mon", new string[] { "dtMon", "tMonStart", "tMonEnd", "tMonReg", "tMonOvr", "tMonTotal" } }, {"Tue", new string[] { "dtTue", "tTueStart", "tTueEnd", "tTueReg", "tTueOvr", "tTueTotal" } }, {"Wed", new string[] { "dtWed", "tWedStart", "tWedEnd", "tWedReg", "tWedOvr", "tWedTotal" } }, {"Thu", new string[] { "dtThu", "tThuStart", "tThuEnd", "tThuReg", "tThuOvr", "tThuTotal" } }, {"Fri", new string[] { "dtFri", "tFriStart", "tFriEnd", "tFriReg", "tFriOvr", "tFriTotal" } }, {"Sat", new string[] { "dtSat", "tSatStart", "tSatEnd", "tSatReg", "tSatOvr", "tSatTotal" } }, }; public const string TotalReg = "totReg"; public const string TotalOvr = "totOvr"; public const string TotalHours = "totHours"; public const string EmpSign = "empSign"; public const string EmpSignDate = "empSignDate"; public const string SupSign = "supSign"; public const string SupSignDate = "supSignDate"; } // Creates the Time Sheet form: private GcPdfDocument MakeTimeSheetForm() { const float marginH = 72, marginV = 48; var doc = new GcPdfDocument(); var page = doc.NewPage(); var g = page.Graphics; var ip = new PointF(marginH, marginV); var tl = new TextLayout(g.Resolution) { FontCollection = _fc }; tl.Append("TIME SHEET", new TextFormat() { FontName = "Noto Sans", FontSize = 18 }); tl.PerformLayout(true); g.DrawTextLayout(tl, ip); ip.Y += tl.ContentHeight + 15; var logo = GCDRAW.Image.FromFile(Path.Combine("Resources", "ImagesBis", "AcmeLogo-vertical-250px.png")); _disposables.Add(logo); var s = new SizeF(250f * 0.75f, 64f * 0.75f); g.DrawImage(logo, new RectangleF(ip, s), null, ImageAlign.Default); ip.Y += s.Height + 5; tl.Clear(); tl.Append("Where Business meets Technology", new TextFormat() { FontName = "Noto Sans", FontItalic = true, FontSize = 10 }); tl.PerformLayout(true); g.DrawTextLayout(tl, ip); ip.Y += tl.ContentHeight + 15; tl.Clear(); tl.Append("1901, Halford Avenue,\r\nSanta Clara, California – 95051-2553,\r\nUnited States", new TextFormat() { FontName = "Noto Sans", FontSize = 9 }); tl.MaxWidth = page.Size.Width - marginH * 2; tl.TextAlignment = TextAlignment.Trailing; tl.PerformLayout(true); g.DrawTextLayout(tl, ip); ip.Y += tl.ContentHeight + 25; var pen = new GCDRAW.Pen(Color.Gray, 0.5f); var colw = (page.Size.Width - marginH * 2) / 2; var fields1 = DrawTable(ip, new float[] { colw, colw }, new float[] { 30, 30, 30 }, g, pen); var tf = new TextFormat() { FontName = "Noto Sans", FontSize = 9 }; tl.ParagraphAlignment = ParagraphAlignment.Center; tl.TextAlignment = TextAlignment.Leading; tl.MarginLeft = tl.MarginRight = tl.MarginTop = tl.MarginBottom = 4; // t_ - caption // b_ - bounds // f_ - field name, null means no field Action<string, RectangleF, string> drawField = (t_, b_, f_) => { float tWidth; if (!string.IsNullOrEmpty(t_)) { tl.Clear(); tl.MaxHeight = b_.Height; tl.MaxWidth = b_.Width; tl.Append(t_, tf); tl.PerformLayout(true); g.DrawTextLayout(tl, b_.Location); tWidth = tl.ContentRectangle.Right; } else tWidth = 0; if (!string.IsNullOrEmpty(f_)) { var fld = new TextField() { Name = f_ }; fld.Widget.Page = page; fld.Widget.Rect = new RectangleF( b_.X + tWidth + _inputMargin, b_.Y + _inputMargin, b_.Width - tWidth - _inputMargin * 2, b_.Height - _inputMargin * 2); fld.Widget.DefaultAppearance.Font = _inputFont; fld.Widget.DefaultAppearance.FontSize = _inputFontSize; fld.Widget.Border.Color = Color.LightSlateGray; fld.Widget.Border.Width = 0.5f; doc.AcroForm.Fields.Add(fld); } }; drawField("EMPLOYEE NAME: ", fields1[0, 0], _Names.EmpName); drawField("TITLE: ", fields1[1, 0], _Names.EmpTitle); drawField("EMPLOYEE NUMBER: ", fields1[0, 1], _Names.EmpNum); drawField("STATUS: ", fields1[1, 1], _Names.EmpStatus); drawField("DEPARTMENT: ", fields1[0, 2], _Names.EmpDep); drawField("SUPERVISOR: ", fields1[1, 2], _Names.EmpSuper); ip.Y = fields1[0, 2].Bottom; float col0 = 100; colw = (page.Size.Width - marginH * 2 - col0) / 5; float rowh = 25; var fields2 = DrawTable(ip, new float[] { col0, colw, colw, colw, colw, colw }, new float[] { 50, rowh, rowh, rowh, rowh, rowh, rowh, rowh, rowh }, g, pen); tl.ParagraphAlignment = ParagraphAlignment.Far; drawField("DATE", fields2[0, 0], null); drawField("START TIME", fields2[1, 0], null); drawField("END TIME", fields2[2, 0], null); drawField("REGULAR HOURS", fields2[3, 0], null); drawField("OVERTIME HOURS", fields2[4, 0], null); tf.FontBold = true; drawField("TOTAL HOURS", fields2[5, 0], null); tf.FontBold = false; tl.ParagraphAlignment = ParagraphAlignment.Center; tf.ForeColor = Color.Gray; for (int i = 0; i < 7; ++i) drawField(_Names.Dows[i], fields2[0, i + 1], _Names.DtNames[_Names.Dows[i]][0]); // Vertically align date fields (compensate for different DOW widths): var dowFields = doc.AcroForm.Fields.TakeLast(7); var minW = dowFields.Min(f_ => ((TextField)f_).Widget.Rect.Width); dowFields.ToList().ForEach(f_ => { var r_ = ((TextField)f_).Widget.Rect; r_.Offset(r_.Width - minW, 0); r_.Width = minW; ((TextField)f_).Widget.Rect = r_; }); tf.ForeColor = Color.Black; for (int row = 1; row <= 7; ++row) for (int col = 1; col <= 5; ++col) drawField(null, fields2[col, row], _Names.DtNames[_Names.Dows[row - 1]][col]); tf.FontBold = true; drawField("WEEKLY TOTALS", fields2[0, 8], null); tf.FontBold = false; drawField(null, fields2[3, 8], _Names.TotalReg); drawField(null, fields2[4, 8], _Names.TotalOvr); drawField(null, fields2[5, 8], _Names.TotalHours); ip.Y = fields2[0, 8].Bottom; col0 = 72 * 4; colw = page.Size.Width - marginH * 2 - col0; var fields3 = DrawTable(ip, new float[] { col0, colw }, new float[] { rowh + 10, rowh, rowh }, g, pen); drawField("EMPLOYEE SIGNATURE: ", fields3[0, 1], null); var r = fields3[0, 1]; _empSignRect = new RectangleF(r.X + r.Width / 2, r.Y, r.Width / 2 - _inputMargin * 2, r.Height); // For a digital employee signature, uncomment this code: /* var sf = new SignatureField(); sf.Name = _Names.EmpSign; sf.Widget.Rect = new RectangleF(r.X + r.Width / 2, r.Y + _inputMargin, r.Width / 2 - _inputMargin * 2, r.Height - _inputMargin * 2); sf.Widget.Page = page; sf.Widget.BackColor = Color.LightSeaGreen; doc.AcroForm.Fields.Add(sf); */ drawField("DATE: ", fields3[1, 1], _Names.EmpSignDate); drawField("SUPERVISOR SIGNATURE: ", fields3[0, 2], null); // Supervisor signature: r = fields3[0, 2]; var sf = new SignatureField(); sf.Name = _Names.SupSign; sf.Widget.Rect = new RectangleF(r.X + r.Width / 2, r.Y + _inputMargin, r.Width / 2 - _inputMargin * 2, r.Height - _inputMargin * 2); sf.Widget.Page = page; sf.Widget.BackColor = Color.LightYellow; doc.AcroForm.Fields.Add(sf); drawField("DATE: ", fields3[1, 2], _Names.SupSignDate); // Done: return doc; } // Simple table drawing method. Returns the array of table cell rectangles. private RectangleF[,] DrawTable(PointF loc, float[] widths, float[] heights, GcGraphics g, GCDRAW.Pen p) { if (widths.Length == 0 || heights.Length == 0) throw new Exception("Table must have some columns and rows."); RectangleF[,] cells = new RectangleF[widths.Length, heights.Length]; var r = new RectangleF(loc, new SizeF(widths.Sum(), heights.Sum())); // Draw left borders (except for 1st one): float x = loc.X; for (int i = 0; i < widths.Length; ++i) { for (int j = 0; j < heights.Length; ++j) { cells[i, j].X = x; cells[i, j].Width = widths[i]; } if (i > 0) g.DrawLine(x, r.Top, x, r.Bottom, p); x += widths[i]; } // Draw top borders (except for 1st one): float y = loc.Y; for (int j = 0; j < heights.Length; ++j) { for (int i = 0; i < widths.Length; ++i) { cells[i, j].Y = y; cells[i, j].Height = heights[j]; } if (j > 0) g.DrawLine(r.Left, y, r.Right, y, p); y += heights[j]; } // Draw outer border: g.DrawRectangle(r, p); // return cells; } // Fill in employee info and working hours with sample data: private void FillEmployeeData(GcPdfDocument doc) { // For the purposes of this sample, we fill the form with random data: SetFieldValue(doc, _Names.EmpName, "Jaime Smith"); SetFieldValue(doc, _Names.EmpNum, "12345"); SetFieldValue(doc, _Names.EmpDep, "Research & Development"); SetFieldValue(doc, _Names.EmpTitle, "Senior Developer"); SetFieldValue(doc, _Names.EmpStatus, "Full Time"); var rand = new Random((int)Common.Util.TimeNow().Ticks); DateTime workday = Common.Util.TimeNow().AddDays(-15); while (workday.DayOfWeek != DayOfWeek.Sunday) workday = workday.AddDays(1); TimeSpan wkTot = TimeSpan.Zero, wkReg = TimeSpan.Zero, wkOvr = TimeSpan.Zero; for (int i = 0; i < 7; ++i) { // Start time: var start = new DateTime(workday.Year, workday.Month, workday.Day, rand.Next(6, 12), rand.Next(0, 59), 0); SetFieldValue(doc, _Names.DtNames[_Names.Dows[i]][0], start.ToShortDateString()); SetFieldValue(doc, _Names.DtNames[_Names.Dows[i]][1], start.ToShortTimeString()); // End time: var end = start.AddHours(rand.Next(8, 14)).AddMinutes(rand.Next(0, 59)); SetFieldValue(doc, _Names.DtNames[_Names.Dows[i]][2], end.ToShortTimeString()); var tot = end - start; var reg = TimeSpan.FromHours((start.DayOfWeek != DayOfWeek.Saturday && start.DayOfWeek != DayOfWeek.Sunday) ? 8 : 0); var ovr = tot.Subtract(reg); SetFieldValue(doc, _Names.DtNames[_Names.Dows[i]][3], reg.ToString(@"hh\:mm")); SetFieldValue(doc, _Names.DtNames[_Names.Dows[i]][4], ovr.ToString(@"hh\:mm")); SetFieldValue(doc, _Names.DtNames[_Names.Dows[i]][5], tot.ToString(@"hh\:mm")); wkTot += tot; wkOvr += ovr; wkReg += reg; // workday = workday.AddDays(1); } SetFieldValue(doc, _Names.TotalReg, wkReg.TotalHours.ToString("F")); SetFieldValue(doc, _Names.TotalOvr, wkOvr.TotalHours.ToString("F")); SetFieldValue(doc, _Names.TotalHours, wkTot.TotalHours.ToString("F")); SetFieldValue(doc, _Names.EmpSignDate, workday.ToShortDateString()); // 'Sign' the time sheet on behalf of the employee by drawing an image representing the signature // (see TimeSheetIncremental for digitally signing by both employee and supervisor): var empSignImage = GCDRAW.Image.FromFile(Path.Combine("Resources", "ImagesBis", "signature.png")); _disposables.Add(empSignImage); var ia = new ImageAlign(ImageAlignHorz.Center, ImageAlignVert.Center, true, true, true, false, false) { KeepAspectRatio = true }; doc.Pages[0].Graphics.DrawImage(empSignImage, _empSignRect, null, ia); } // Sets the value of a field with the specified name: private void SetFieldValue(GcPdfDocument doc, string name, string value) { var fld = doc.AcroForm.Fields.First(f_ => f_.Name == name); if (fld != null) fld.Value = value; } } }