TextModifier.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 / System / Windows / Media / textformatting / TextModifier.cs / 1305600 / TextModifier.cs
                        

                        
                            //------------------------------------------------------------------------ 
//
//  Microsoft Windows Client Platform
//  Copyright (C) Microsoft Corporation, 2001
// 
//  File:      TextModifier.cs
// 
//  Contents:  Text modification API 
//
//  Spec:      http://avalon/text/DesignDocsAndSpecs/Text%20Formatting%20API.doc 
//
//  Created:   12-5-2004 Niklas Borson (niklasb)
//
//----------------------------------------------------------------------- 

using System; 
using System.Collections; 
using System.Collections.Generic;
using System.Windows; 
using System.Windows.Media;


namespace System.Windows.Media.TextFormatting 
{
    ///  
    /// Specialized text run used to modify properties of text runs in its scope. 
    /// The scope extends to the next matching EndOfSegment text run (matching
    /// because text modifiers may be nested), or to the next EndOfParagraph. 
    /// 
    public abstract class TextModifier : TextRun
    {
        ///  
        /// Reference to character buffer
        ///  
        public sealed override CharacterBufferReference CharacterBufferReference 
        {
            get { return new CharacterBufferReference(); } 
        }

        /// 
        /// Modifies the properties of a text run. 
        /// 
        /// Properties of a text run or the return value of 
        /// ModifyProperties for a nested text modifier. 
        /// Returns the actual text run properties to be used for formatting,
        /// subject to further modification by text modifiers at outer scopes. 
        public abstract TextRunProperties ModifyProperties(TextRunProperties properties);

        /// 
        /// TextFormatter to ask whether directional embedding is 
        /// represented by this modifier.
        ///  
        public abstract bool HasDirectionalEmbedding {get; } 

        ///  
        /// TextFormatter to get the flow direction value for directional
        /// embedding. The value is ignored unless the property
        /// HasDirectionalEmbedding returns true.
        ///  
        public abstract FlowDirection FlowDirection  {get; }
    } 
} 

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
// Copyright (c) Microsoft Corporation. All rights reserved.

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