FontFromFile.cs
- //
- // 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 GCTEXT = GrapeCity.Documents.Text;
- using GCDRAW = GrapeCity.Documents.Drawing;
-
- namespace DsPdfWeb.Demos.Basics
- {
- // This short sample demonstrates how a Font can be loaded from a file
- // and used in your code to render text.
- // The sample relies on font files Gabriola.ttf and timesbi.ttf to exist in the
- // Resources/Fonts folder.
- //
- // NOTE 1: When Font.FromFile() is used, the actual data is loaded on demand,
- // so that usually a Font instance will not take too much space.
- // The situation is different for fonts created using Font.FromArray()
- // and Font.FromStream() methods - in those cases the whole font is
- // immediately loaded into memory. The font will still be parsed
- // only on demand, but memory consumption is slightly higher,
- // so using Font.FromFile() should generally be preferred.
- //
- // NOTE 2: When different Font instances (created using any of the static ctors
- // mentioned above) are used to render text in a PDF, each instance will result
- // in embedding a separate subset of glyphs even if the glyphs are the same,
- // because DsPdf has no way of knowing that two different Font instances
- // represent the same physical font. So either make sure that only one Font instance
- // is created for each physical font, or better yet use the FontCollection class
- // to add the fonts you need, and specify them via TextFormat.FontName.
- public class FontFromFile
- {
- public int CreatePDF(Stream stream)
- {
- var gabriola = GCTEXT.Font.FromFile(Path.Combine("Resources", "Fonts", "Gabriola.ttf"));
- if (gabriola == null)
- throw new Exception("Could not load font Gabriola");
-
- // Now that we have our font, use it to render some text:
- var tf = new TextFormat() { Font = gabriola, FontSize = 16 };
- var doc = new GcPdfDocument();
- var g = doc.NewPage().Graphics;
- g.DrawString($"Sample text drawn with font {gabriola.FontFamilyName}.", tf, new PointF(72, 72));
- // We can change the font size:
- tf.FontSize += 4;
- g.DrawString("The quick brown fox jumps over the lazy dog.", tf, new PointF(72, 72 * 2));
- // We can force DsPdf to emulate bold or italic style with a non-bold (non-italic) font, e.g.:
- tf.FontStyle = GCTEXT.FontStyle.Bold;
- g.DrawString("This line prints with the same font, using emulated bold style.", tf, new PointF(72, 72 * 3));
- // But of course rather than emulated, it is much better to use real bold/italic fonts.
- // So finally, get a real bold italic font and print a line with it:
- var timesbi = GCTEXT.Font.FromFile(Path.Combine("Resources", "Fonts", "timesbi.ttf"));
- tf.Font = timesbi ?? throw new Exception("Could not load font timesbi");
- tf.FontStyle = GCTEXT.FontStyle.Regular;
- g.DrawString($"This line prints with {timesbi.FullFontName}.", tf, new PointF(72, 72 * 4));
- // Done:
- doc.Save(stream);
- return doc.Pages.Count;
- }
- }
- }
-