//// 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.Pdf;using GrapeCity.Documents.Text;using GCTEXT = GrapeCity.Documents.Text;using GCDRAW = GrapeCity.Documents.Drawing;
namespace DsPdfWeb.Demos.Basics{    // Demonstrates the basics of character formatting in DsPdf.    //     // Character formatting in DsPdf is done via GrapeCity.Documents.Text.TextFormat class.    // An instance of that class with the required formatting options    // is passed to most text rendering methods available in DsPdf (e.g. DrawString).    // Rendering text with different character formatting in the same paragraph    // is done by using TextLayout/DrawTextLayout.    // See also TextRendering, MultiFormattedText, ParagraphAlign,    // ParagraphFormatting, TextAlign.    public class CharacterFormatting    {        public int CreatePDF(Stream stream)        {            var doc = new GcPdfDocument();            var page = doc.NewPage();            var g = page.Graphics;            const float In = 72f, vStep = In / 2;            var ip = new PointF(In, In);
            // 1. The only mandatory property that must be set on a TextFormat is Font:            var tf = new TextFormat() { Font = StandardFonts.Times };
            g.DrawString("1. The only mandatory property that must always be set on a TextFormat is Font." +                "Even FontSize is optional, and defaults to 12pts.", tf, ip);            ip.Y += vStep * 2;
            // 2. Standard font properties are available:            tf.Underline = true;            tf.Strikethrough = true;            tf.FontSize = 10;            g.DrawString("2. Standard properties are available, here we turn Underline and Strikethrough on, and set FontSize to 10.", tf, ip);            ip.Y += vStep;
            // 3. TextFormat.FontStyle allows emulating bold and/or italic styles            // using a regular font (see also BoldItalicEmulation):            tf.Underline = tf.Strikethrough = false;            tf.FontStyle = GCTEXT.FontStyle.BoldItalic;            tf.FontSize = 12;            g.DrawString("3. Using TextFormat.FontStyle.BoldItalic to emulate bold italic style.", tf, ip);            ip.Y += vStep;
            // 4. Other properties include foreground and background colors:            tf.FontStyle = GCTEXT.FontStyle.Regular;            tf.ForeColor = Color.DarkSlateBlue;            tf.BackColor = Color.PaleGreen;            g.DrawString("4. Using TextFormat.ForeColor and TextFormat.BackColor to colorize the text.", tf, ip);            ip.Y += vStep;
            // 5. Different text formats may be mixed in the same paragraph.            // For that, TextLayout and GcPdfGraphics.DrawTextLayout must be used:            TextLayout tl = g.CreateTextLayout();            tl.Append("5. Different text formats can be easily mixed in the same paragraph",                 new TextFormat() { Font = StandardFonts.Times });            tl.Append("when the paragraph is built with TextLayout",                new TextFormat() { Font = StandardFonts.TimesBold, BackColor = Color.PaleTurquoise });            tl.Append("as this sample paragraph shows.",                new TextFormat() { Font = StandardFonts.HelveticaBoldItalic, ForeColor = Color.DarkOrange });            tl.Append("Various other options are available on TextFormat, including",                new TextFormat() { Font = StandardFonts.Times, ForeColor = Color.DarkSlateBlue });            tl.Append(" GlyphAdvanceFactor ",                new TextFormat() { Font = StandardFonts.TimesBoldItalic, Underline = true });            tl.Append(" (spreading glyphs out ",                new TextFormat() { Font = StandardFonts.Times, GlyphAdvanceFactor = 1.5f, ForeColor = Color.BlueViolet });            tl.Append("or putting them closer together),  ",                new TextFormat() { Font = StandardFonts.Times, GlyphAdvanceFactor = 0.8f, ForeColor = Color.BlueViolet });            tl.Append("TransverseOffset",                new TextFormat() { Font = StandardFonts.TimesBoldItalic, Underline = true });            tl.Append(" (lowering the glyphs below the base line, ",                new TextFormat() { Font = StandardFonts.Times, TransverseOffset = -5, ForeColor = Color.MediumVioletRed });            tl.Append("or raising them above it)",                new TextFormat() { Font = StandardFonts.Times, TransverseOffset = 5, ForeColor = Color.MediumVioletRed });            tl.Append(" and more (for example, specific fonts' features are accessible via TextFormat.FontFeatures).",                new TextFormat() { Font = StandardFonts.Times, FontFeatures = new FontFeature[] { new FontFeature(FeatureTag.clig) } });
            // For this sample, we just set the max width of the text layout,            // in a real app you would probably set at least the MaxHeight too:            tl.MaxWidth = page.Size.Width - In * 2;            tl.PerformLayout(true);            g.DrawTextLayout(tl, ip);            // Done:            doc.Save(stream);            return doc.Pages.Count;        }    }}