OptimalBreakSession.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 / Framework / MS / Internal / PtsHost / OptimalBreakSession.cs / 1305600 / OptimalBreakSession.cs
                        

                        
                            //---------------------------------------------------------------------------- 
//
// Copyright (C) Microsoft Corporation.  All rights reserved.
//
// File: OptimalBreakSession 
//
// Description: OptimalBreakSession is unmanaged resouce handle to TextParagraphCache 
// 
// History:
//  06/07/2005 : ghermann - created 
//
//---------------------------------------------------------------------------

using System; 
using System.Collections;
using System.Windows; 
using System.Security;                  // SecurityCritical 
using System.Windows.Documents;
using MS.Internal.Text; 
using MS.Internal.PtsHost.UnsafeNativeMethods;
using System.Windows.Media.TextFormatting;

namespace MS.Internal.PtsHost 
{
    // --------------------------------------------------------------------- 
    // Break record for line - holds decoration information 
    // ---------------------------------------------------------------------
    internal sealed class OptimalBreakSession : UnmanagedHandle 
    {
        // ------------------------------------------------------------------
        // Constructor.
        // 
        //      PtsContext - Context
        //      TextParagraphCache - Contained line break 
        // ----------------------------------------------------------------- 
        internal OptimalBreakSession(TextParagraph textParagraph, TextParaClient textParaClient, TextParagraphCache TextParagraphCache, OptimalTextSource optimalTextSource) : base(textParagraph.PtsContext)
        { 
            _textParagraph = textParagraph;
            _textParaClient = textParaClient;
            _textParagraphCache = TextParagraphCache;
            _optimalTextSource = optimalTextSource; 
        }
 
        ///  
        /// Dispose the break session / paragraph cache
        ///  
        public override void Dispose()
        {
            try
            { 
                if(_textParagraphCache != null)
                { 
                    _textParagraphCache.Dispose(); 
                }
 
                if(_optimalTextSource != null)
                {
                    _optimalTextSource.Dispose();
                } 
            }
            finally 
            { 
                _textParagraphCache = null;
                _optimalTextSource = null; 
            }

            base.Dispose();
        } 

        #region Internal Properties 
 
        internal TextParagraphCache TextParagraphCache { get { return _textParagraphCache; } }
        internal TextParagraph      TextParagraph { get { return _textParagraph; } } 
        internal TextParaClient     TextParaClient { get { return _textParaClient; } }
        internal OptimalTextSource  OptimalTextSource      { get { return _optimalTextSource; } }

        #endregion Internal Properties 

 
        #region Private Fields 

        private TextParagraphCache _textParagraphCache; 
        private TextParagraph      _textParagraph;
        private TextParaClient     _textParaClient;
        private OptimalTextSource  _optimalTextSource;
 
        #endregion Private Fields
 
    } 

 
    // ----------------------------------------------------------------------
    // LineBreakpoint - Unmanaged handle for TextBreakpoint / optimal break session
    // ----------------------------------------------------------------------
    internal sealed class LineBreakpoint : UnmanagedHandle 
    {
        // ----------------------------------------------------------------- 
        // Constructor. 
        //
        //      PtsContext - Context 
        //      TextBreakpoint - Contained breakpoint
        // ------------------------------------------------------------------
        internal LineBreakpoint(OptimalBreakSession optimalBreakSession, TextBreakpoint textBreakpoint) : base(optimalBreakSession.PtsContext)
        { 
            _textBreakpoint = textBreakpoint;
            _optimalBreakSession = optimalBreakSession; 
        } 

        ///  
        /// Dispose the text breakpoint
        /// 
        public override void Dispose()
        { 
            if(_textBreakpoint != null)
            { 
                _textBreakpoint.Dispose(); 
            }
 
            base.Dispose();
        }

        #region Internal Properties 

        internal OptimalBreakSession OptimalBreakSession { get { return _optimalBreakSession; } } 
 

        #endregion Internal Properties 


        #region Private Fields
 
        private TextBreakpoint _textBreakpoint;
        private OptimalBreakSession _optimalBreakSession; 
 
        #endregion Private Fields
 
    }

}
 

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

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