Ligatures.cs
// 完毕:
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
{
// GcDocs.Pdf 支持连字(将两个或多个字母连接成一个字形),
// 前提是所选字体支持它们,并且相应的字体功能已打开。
// 有关字体功能的完整列表,请参阅
public class Ligatures
{
public int CreatePDF(Stream stream)
{
// 常见拉丁连字列表:
const string latinLigatures = "fi, fj, fl, ff, ffi, ffl.";
// 设置与连字相关的字体功能:
// 全部开启:
FontFeature[] allOn = new FontFeature[]
{
new FontFeature(FeatureTag.clig, true), // Contextual Ligatures
new FontFeature(FeatureTag.dlig, true), // Discretionary Ligatures
new FontFeature(FeatureTag.hlig, true), // Historical Ligatures
new FontFeature(FeatureTag.liga, true), // Standard Ligatures
new FontFeature(FeatureTag.rlig, true), // Required Ligatures
};
// 全部关闭:
FontFeature[] allOff = new FontFeature[]
{
new FontFeature(FeatureTag.clig, false),
new FontFeature(FeatureTag.dlig, false),
new FontFeature(FeatureTag.hlig, false),
new FontFeature(FeatureTag.liga, false),
new FontFeature(FeatureTag.rlig, false),
};
var doc = new GcPdfDocument();
var g = doc.NewPage().Graphics;
// 文本插入点:
var ip = new PointF(72, 72);
var tf = new TextFormat();
tf.Font = GCTEXT.Font.FromFile(Path.Combine("Resources", "Fonts", "times.ttf"));
tf.FontSize = 20;
g.DrawString($"Common Latin ligatures, font {tf.Font.FontFamilyName}", tf, ip);
ip.Y += 36;
// 关闭所有连字功能:
tf.FontFeatures = allOff;
g.DrawString($"All ligature features OFF: {latinLigatures}", tf, ip);
ip.Y += 36;
// 打开所有连字功能:
tf.FontFeatures = allOn;
g.DrawString($"All ligature features ON: {latinLigatures}", tf, ip);
ip.Y += 72;
// 使用不同的字体重复:
tf.Font = GCTEXT.Font.FromFile(Path.Combine("Resources", "Fonts", "Gabriola.ttf"));
g.DrawString($"Common Latin ligatures, font {tf.Font.FontFamilyName}", tf, ip);
ip.Y += 36;
// 关闭所有连字功能:
tf.FontFeatures = allOff;
g.DrawString($"All ligature features OFF: {latinLigatures}", tf, ip);
ip.Y += 36;
// 打开所有连字功能:
tf.FontFeatures = allOn;
g.DrawString($"All ligature features ON: {latinLigatures}", tf, ip);
// 完毕:
doc.Save(stream);
return doc.Pages.Count;
}
}
}