将普通文字转成路径(Path)的方法 (WPF,Silverlight,SVG)

在WPF中使用

public string GetTextPath(string word,string fontFamily,int fontSize)
{
            Typeface typeface = new Typeface(new FontFamily(fontFamily),FontStyles.normal,FontWeights.normal,FontStretches.normal); 
            return GetTextPath(word,typeface,fontSize);
}
public string GetTextPath(string word,Typeface typeface,int fontSize)
{
            FormattedText text = new FormattedText(word,new System.Globalization.CultureInfo("zh-cn"),FlowDirection.LeftToRight,fontSize,Brushes.Black);
            Geometry geo = text.BuildGeometry(new Point(0,0)); 
            PathGeometry path = geo.GetFlattenedpathGeometry();
            return path.ToString(); 
}

用法：
<Path x:Name="textPath" Canvas.Left="10" Canvas.Top="10" Fill="#FFFF0000" />

C#代码：
rootElement.findName('textPath').Data = GetTextPath("测试一下A Test!","方正大黑简体",42);

在SVG/Silverlight中使用，可以写成 WCF

using System;
using System.Collections.Generic;
using System.Linq;
using System.Runtime.Serialization;
using System.ServiceModel;
using System.ServiceModel.Web;
using System.Text;

// 注意: 使用“重构”菜单上的“重命名”命令，可以同时更改代码和配置文件中的接口名“IService”。
[ServiceContract]
public interface IService
{
    [OperationContract]
    string GetTextPath(FontParam cs);
}


[DataContract]
public class FontParam
{
    string word = "";
    string fontFamily = "宋体";
    int fontSize = 12;

    [DataMember]
    public string Word
    {
        get { return word; }
        set { word = value; }
    }

    [DataMember]
    public string FontFamily
    {
        get { return fontFamily; }
        set { fontFamily = value; }
    }

    [DataMember]
    public int FontSize
    {
        get { return fontSize; }
        set { fontSize = value; }
    }
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Runtime.Serialization;
using System.ServiceModel;
using System.ServiceModel.Web;
using System.Text;

using System.Windows.Media;
using System.Windows;

// 注意: 使用“重构”菜单上的“重命名”命令，可以同时更改代码、服务和配置文件中的类名“Service”。
public class Service : IService
{
    public string GetTextPath(FontParam fp)
    {
        Typeface typeface = new Typeface(new FontFamily(fp.FontFamily),FontStretches.normal);
        return GetTextPath(fp.Word,fp.FontSize);
    }

    private string GetTextPath(string word,int fontSize)
    {
        FormattedText text = new FormattedText(word,Brushes.Black);

        Geometry geo = text.BuildGeometry(new System.Windows.Point(0,0));
        PathGeometry path = geo.GetFlattenedpathGeometry();

        return path.ToString();
    }
}

<?xml version="1.0"?>
<configuration>
  <system.web>
    <compilation debug="true" targetFramework="4.0">
      <assemblies>
        <add assembly="PresentationCore,Version=4.0.0.0,Culture=neutral,PublicKeyToken=31BF3856AD364E35"/>
        <add assembly="WindowsBase,PublicKeyToken=31BF3856AD364E35"/>
      </assemblies>
    </compilation>
  </system.web>
  <system.serviceModel>
    <behaviors>
      <serviceBehaviors>
        <behavior>
          <!-- 为避免泄漏元数据信息，请在部署前将以下值设置为 false 并删除上面的元数据终结点 -->
          <serviceMetadata httpGetEnabled="true"/>
          <!-- 要接收故障异常详细信息以进行调试，请将以下值设置为 true。在部署前设置为 false 以避免泄漏异常信息-->
          <serviceDebug includeExceptionDetailInFaults="false"/>
        </behavior>
      </serviceBehaviors>
    </behaviors>
    <serviceHostingEnvironment multipleSiteBindingsEnabled="true"/>
  </system.serviceModel>
  <system.webServer>
    <modules runAllManagedModulesForAllRequests="true"/>
  </system.webServer>
</configuration>

记得添加PresentationCore.dll和WindowsBase.dll的引用，这两个在.net 4.0 /wpf　的目录下

 ServiceReference1.ServiceClient sc = new ServiceReference1.ServiceClient();
            ServiceReference1.FontParam cs = new ServiceReference1.Fontparam();
            cs.FontSize = fontSize.AsInt();
            cs.FontFamily = fontFamily;
            cs.Word = word;
            haha = sc.GetTextPath(cs);

哈哈，这样就可以了！！

来自（http://www.voidcn.com/article/p-rdtkyzub-yk.html）