// // 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.Collections.Generic; using GrapeCity.Documents.Pdf; using GrapeCity.Documents.Text; using GrapeCity.Documents.Drawing; namespace DsPdfWeb.Demos.Basics { // This sample demonstrates how to use TextLayout.TabStops to render columns // of floating point numbers aligned in different ways: // - aligned on the decimal point via TabStopAlignment.Separator; // - left-aligned on the tab position using TabStopAlignment.Leading; // - centered around the tab position using TabStopAlignment.Center; // - right-aligned on the tab position using TabStopAlignment.Trailing. public class TabsAlignment { public int CreatePDF(Stream stream) { // Create and set up the document: var doc = new GcPdfDocument(); var page = doc.NewPage(); var g = page.Graphics; // Create and set up a TextLayout object to print the text: var tl = g.CreateTextLayout(); tl.MaxWidth = page.Size.Width; tl.MaxHeight = page.Size.Height; tl.MarginLeft = tl.MarginRight = tl.MarginTop = tl.MarginBottom = 36; tl.DefaultFormat.Font = StandardFonts.Times; tl.DefaultFormat.FontSize = 10; tl.DefaultFormat.BackColor = Color.FromArgb(217, 217, 217); // Add tab stops with different alignment types // (the first tab's ctor creates a TabStopAlignment.Separator TabStop): tl.TabStops = new List<TabStop>() { new TabStop(72, '.'), new TabStop(72 * 2.5f, TabStopAlignment.Leading), new TabStop(72 * 5, TabStopAlignment.Center), new TabStop(72 * 7.5f, TabStopAlignment.Trailing), }; // Render sample text: tl.Append($"TabStopAlignment:\r\n\tSeparator '.'\tLeading\tCenter\tTrailing\r\n"); double v0 = 1; double q = (1 + Math.Sqrt(5)) / 2; for (int i = 1; i < 50; ++i) { tl.Append($"\t{v0:R}\t{v0:R}\t{v0:R}\t{v0:R}\r\n"); v0 *= q; } tl.PerformLayout(true); // Draw the text and images: g.DrawTextLayout(tl, PointF.Empty); // Done: doc.Save(stream); return doc.Pages.Count; } } }