// // This code is part of Document Solutions for PDF demos. // Copyright (c) MESCIUS inc. All rights reserved. // using System; using System.Collections.Generic; using System.IO; using System.Drawing; using GrapeCity.Documents.Pdf; using GrapeCity.Documents.Text; using GCTEXT = GrapeCity.Documents.Text; using GCDRAW = GrapeCity.Documents.Drawing; namespace DsPdfWeb.Demos.Basics { // This sample demonstrates how to create a drop cap in DsPdf. public class DropCap { public int CreatePDF(Stream stream) { var doc = new GcPdfDocument(); var g = doc.NewPage().Graphics; // Get some text and split it into first letter (drop cap) and the rest: var text = Common.Util.LoremIpsum(1); var head = text.Substring(0, 1); var tail = text.Substring(1); // Use the Times font: var font = GCTEXT.Font.FromFile(Path.Combine("Resources", "Fonts", "NotoSerif-Regular.ttf")); // Text layout for the drop cap: var tlHead = g.CreateTextLayout(); tlHead.DefaultFormat.Font = font; tlHead.DefaultFormat.FontSize = 40; tlHead.Append(head); tlHead.PerformLayout(true); // Text layout for the rest of the text: var tlTail = g.CreateTextLayout(); tlTail.DefaultFormat.Font = font; tlTail.DefaultFormat.FontSize = 12; // Use whole page with 1" margins all around: tlTail.MaxWidth = doc.Pages.Last.Size.Width - 72 * 2; tlTail.MaxHeight = doc.Pages.Last.Size.Height - 72 * 2; tlTail.Append(tail); // Before we layout the main body of the text, we calculate the size and position // of the drop cap rectangle, and add it to the main text layout's ObjectRects - // the list of rectangles that the main text will flow around. // // Note: While we could simply position the drop cap rectangle at the top/left of the // main text, it looks better if the tops of the drop cap and the main text's glyphs // are aligned. For this, we need to calculate the offsets of letter tops within // the text bounding boxes, and adjust the position of the drop cap accordingly // (raise it a little). // (For this adjustment we need the sCapHeight field which is present if the font's // os/2 table version 2 and higher, so we must test for that and skip this step if // the CapHeight is not available). float dy = 0; if (font.CapHeight != -1) { // We move the drop cap position up by the amount equal to the difference between the // top spacing within the Em square of the drop cap's font size and the font size of the rest of the text: float k = tlHead.DefaultFormat.FontSize * tlHead.Resolution * tlHead.FontScaleFactor / (font.UnitsPerEm * 72); dy = (font.HorizontalAscender - font.CapHeight) * k; k /= tlHead.DefaultFormat.FontSize; k *= tlTail.DefaultFormat.FontSize; dy -= (font.HorizontalAscender - font.SmallXHeight) * k; } // Specify the rectangle for the main text to flow around: tlTail.ObjectRects = new List<ObjectRect>() { new ObjectRect(0, -dy, tlHead.ContentWidth * 1.2f, tlHead.ContentHeight) }; // Layout the main text now: tlTail.PerformLayout(true); // Draw everything: g.DrawTextLayout(tlHead, new PointF(72, 72 - dy)); g.DrawTextLayout(tlTail, new PointF(72, 72)); // Done: doc.Save(stream); return doc.Pages.Count; } } }