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//---------------------------------------------------------------------------
//
// 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;
}
/// <summary>
/// Dispose the break session / paragraph cache
/// </summary>
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;
}
/// <summary>
/// Dispose the text breakpoint
/// </summary>
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
}
}
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