FontDifferentiator.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / wpf / src / Core / CSharp / MS / Internal / FontFace / FontDifferentiator.cs / 1305600 / FontDifferentiator.cs
                        

                        
                            //---------------------------------------------------------------------------- 
//
// Copyright (c) Microsoft Corporation.  All rights reserved.
//
// Description: FontDifferentiator class handles parsing font family and face names 
// and adjusting stretch, weight and style values.
// 
// History: 
//  11/10/2005 : mleonov - Started integration from a prototype application created by DBrown.
//   1/21/2009 : [....] - removed unused code. 
//
//---------------------------------------------------------------------------

using System; 
using System.Collections.Generic;
using System.Globalization; 
using System.Text; 
using System.Windows;
using System.Windows.Markup;    // for XmlLanguage 

namespace MS.Internal.FontFace
{
    ///  
    /// FontDifferentiator class handles parsing font family and face names
    /// and adjusting stretch, weight and style values. 
    ///  
    internal static class FontDifferentiator
    { 
        internal static IDictionary ConstructFaceNamesByStyleWeightStretch(
            FontStyle style,
            FontWeight weight,
            FontStretch stretch) 
        {
            string faceName = BuildFaceName(style, weight, stretch); 
 
            // Default comparer calls CultureInfo.Equals, which works for our purposes.
            Dictionary faceNames = new Dictionary(1); 
            faceNames.Add(XmlLanguage.GetLanguage("en-us"), faceName);
            return faceNames;
        }
 
        private static string BuildFaceName(
            FontStyle fontStyle, 
            FontWeight fontWeight, 
            FontStretch fontStretch
            ) 
        {
            string parsedStyleName   = null;
            string parsedWeightName  = null;
            string parsedStretchName = null; 
            string regularFaceName   = "Regular";
            if (fontWeight != FontWeights.Normal) 
                parsedWeightName = ((IFormattable)fontWeight).ToString(null, CultureInfo.InvariantCulture); 

            if (fontStretch != FontStretches.Normal) 
                parsedStretchName = ((IFormattable)fontStretch).ToString(null, CultureInfo.InvariantCulture);

            if (fontStyle != FontStyles.Normal)
                parsedStyleName = ((IFormattable)fontStyle).ToString(null, CultureInfo.InvariantCulture); 

            // Build correct face string. 
            // Set the initial capacity to be able to hold the word "Regular". 
            StringBuilder faceNameBuilder = new StringBuilder(7);
 
            if (parsedStretchName != null)
            {
                faceNameBuilder.Append(parsedStretchName);
            } 

            if (parsedWeightName != null) 
            { 
                if (faceNameBuilder.Length > 0)
                { 
                    faceNameBuilder.Append(" ");
                }
                faceNameBuilder.Append(parsedWeightName);
            } 

            if (parsedStyleName != null) 
            { 
                if (faceNameBuilder.Length > 0)
                { 
                    faceNameBuilder.Append(" ");
                }
                faceNameBuilder.Append(parsedStyleName);
            } 

            if (faceNameBuilder.Length == 0) 
            { 
                faceNameBuilder.Append(regularFaceName);
            } 

            return faceNameBuilder.ToString();
        }
    } 
}

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.

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