Code:
/ Dotnetfx_Vista_SP2 / Dotnetfx_Vista_SP2 / 8.0.50727.4016 / DEVDIV / depot / DevDiv / releases / Orcas / QFE / wpf / src / Core / CSharp / System / Windows / Media / textformatting / TextLineBreak.cs / 1 / TextLineBreak.cs
//------------------------------------------------------------------------ // // Microsoft Windows Client Platform // Copyright (C) Microsoft Corporation // // File: TextLineBreak.cs // // Contents: Text properties and state at the point where text is broken // by the line breaking process, which may need to be carried over // when formatting the next line. // // Spec: http://team/sites/Avalon/Specs/Text%20Formatting%20API.doc // // Created: 12-5-2004 Niklas Borson (niklasb) // //----------------------------------------------------------------------- using System; using System.Security; using System.Collections; using System.Collections.Generic; using System.Windows; using System.Windows.Media; using MS.Internal; using MS.Internal.TextFormatting; using SR = MS.Internal.PresentationCore.SR; using SRID = MS.Internal.PresentationCore.SRID; namespace System.Windows.Media.TextFormatting { ////// Text properties and state at the point where text is broken /// by the line breaking process. /// public sealed class TextLineBreak : IDisposable { private TextModifierScope _currentScope; private SecurityCriticalDataForSet_breakRecord; #region Constructors /// /// Internallly construct the line break /// internal TextLineBreak( TextModifierScope currentScope, SecurityCriticalDataForSetbreakRecord ) { _currentScope = currentScope; _breakRecord = breakRecord; if (breakRecord.Value == IntPtr.Zero) { // this object does not hold unmanaged resource, // remove it from the finalizer queue. GC.SuppressFinalize(this); } } #endregion /// /// Finalize the line break /// ~TextLineBreak() { DisposeInternal(true); } ////// Dispose the line break /// public void Dispose() { DisposeInternal(false); GC.SuppressFinalize(this); } ////// Clone a new instance of TextLineBreak /// ////// Critical - as this calls unmanaged API LoCloneBreakRecord. /// PublicOK - as it takes no parameter and retain no additional unmanaged resource. /// [SecurityCritical] public TextLineBreak Clone() { IntPtr pbreakrec = IntPtr.Zero; if (_breakRecord.Value != IntPtr.Zero) { LsErr lserr = UnsafeNativeMethods.LoCloneBreakRecord(_breakRecord.Value, out pbreakrec); if (lserr != LsErr.None) { TextFormatterContext.ThrowExceptionFromLsError(SR.Get(SRID.CloneBreakRecordFailure, lserr), lserr); } } return new TextLineBreak(_currentScope, new SecurityCriticalDataForSet(pbreakrec)); } /// /// Destroy LS unmanaged break records object inside the line break /// managed object. The parameter flag indicates whether the call is /// from finalizer thread or the main UI thread. /// ////// Critical - as this calls the setter of _breakRecord.Value which is type SecurityCriticalDataForSet. /// _breakRecord is the value received from call to LoCreateBreaks and being passed back in /// when building the next break. No code should have access to set it otherwise. /// Safe - as this does not take any parameter that it passes directly to the critical function. /// [SecurityCritical, SecurityTreatAsSafe] private void DisposeInternal(bool finalizing) { if (_breakRecord.Value != IntPtr.Zero) { UnsafeNativeMethods.LoDisposeBreakRecord(_breakRecord.Value, finalizing); _breakRecord.Value = IntPtr.Zero; GC.KeepAlive(this); } } ////// Current text modifier scope, which can be null. /// internal TextModifierScope TextModifierScope { get { return _currentScope; } } ////// Unmanaged pointer to LS break records structure /// internal SecurityCriticalDataForSetBreakRecord { get { return _breakRecord; } } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved. //------------------------------------------------------------------------ // // Microsoft Windows Client Platform // Copyright (C) Microsoft Corporation // // File: TextLineBreak.cs // // Contents: Text properties and state at the point where text is broken // by the line breaking process, which may need to be carried over // when formatting the next line. // // Spec: http://team/sites/Avalon/Specs/Text%20Formatting%20API.doc // // Created: 12-5-2004 Niklas Borson (niklasb) // //----------------------------------------------------------------------- using System; using System.Security; using System.Collections; using System.Collections.Generic; using System.Windows; using System.Windows.Media; using MS.Internal; using MS.Internal.TextFormatting; using SR = MS.Internal.PresentationCore.SR; using SRID = MS.Internal.PresentationCore.SRID; namespace System.Windows.Media.TextFormatting { /// /// Text properties and state at the point where text is broken /// by the line breaking process. /// public sealed class TextLineBreak : IDisposable { private TextModifierScope _currentScope; private SecurityCriticalDataForSet_breakRecord; #region Constructors /// /// Internallly construct the line break /// internal TextLineBreak( TextModifierScope currentScope, SecurityCriticalDataForSetbreakRecord ) { _currentScope = currentScope; _breakRecord = breakRecord; if (breakRecord.Value == IntPtr.Zero) { // this object does not hold unmanaged resource, // remove it from the finalizer queue. GC.SuppressFinalize(this); } } #endregion /// /// Finalize the line break /// ~TextLineBreak() { DisposeInternal(true); } ////// Dispose the line break /// public void Dispose() { DisposeInternal(false); GC.SuppressFinalize(this); } ////// Clone a new instance of TextLineBreak /// ////// Critical - as this calls unmanaged API LoCloneBreakRecord. /// PublicOK - as it takes no parameter and retain no additional unmanaged resource. /// [SecurityCritical] public TextLineBreak Clone() { IntPtr pbreakrec = IntPtr.Zero; if (_breakRecord.Value != IntPtr.Zero) { LsErr lserr = UnsafeNativeMethods.LoCloneBreakRecord(_breakRecord.Value, out pbreakrec); if (lserr != LsErr.None) { TextFormatterContext.ThrowExceptionFromLsError(SR.Get(SRID.CloneBreakRecordFailure, lserr), lserr); } } return new TextLineBreak(_currentScope, new SecurityCriticalDataForSet(pbreakrec)); } /// /// Destroy LS unmanaged break records object inside the line break /// managed object. The parameter flag indicates whether the call is /// from finalizer thread or the main UI thread. /// ////// Critical - as this calls the setter of _breakRecord.Value which is type SecurityCriticalDataForSet. /// _breakRecord is the value received from call to LoCreateBreaks and being passed back in /// when building the next break. No code should have access to set it otherwise. /// Safe - as this does not take any parameter that it passes directly to the critical function. /// [SecurityCritical, SecurityTreatAsSafe] private void DisposeInternal(bool finalizing) { if (_breakRecord.Value != IntPtr.Zero) { UnsafeNativeMethods.LoDisposeBreakRecord(_breakRecord.Value, finalizing); _breakRecord.Value = IntPtr.Zero; GC.KeepAlive(this); } } ////// Current text modifier scope, which can be null. /// internal TextModifierScope TextModifierScope { get { return _currentScope; } } ////// Unmanaged pointer to LS break records structure /// internal SecurityCriticalDataForSetBreakRecord { get { return _breakRecord; } } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved.
Link Menu

This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- Timer.cs
- TypedAsyncResult.cs
- UrlAuthorizationModule.cs
- DocumentGridPage.cs
- CdpEqualityComparer.cs
- ImageFormat.cs
- CompiledELinqQueryState.cs
- SecurityIdentifierConverter.cs
- HttpRuntimeSection.cs
- DetailsViewPageEventArgs.cs
- ProviderConnectionPoint.cs
- VectorAnimation.cs
- NativeMethods.cs
- QueryPageSettingsEventArgs.cs
- SocketPermission.cs
- Odbc32.cs
- ScrollPattern.cs
- IgnoreFileBuildProvider.cs
- QualifiedCellIdBoolean.cs
- Pipe.cs
- TemplateKey.cs
- XmlSchemaExternal.cs
- ProxyHelper.cs
- PathParser.cs
- MachineKeyConverter.cs
- LineGeometry.cs
- WindowsListViewItemCheckBox.cs
- XmlDataSource.cs
- SchemaTableOptionalColumn.cs
- CommandManager.cs
- StatusStrip.cs
- CompressionTransform.cs
- WebPartsPersonalizationAuthorization.cs
- EventLogEntryCollection.cs
- XmlILAnnotation.cs
- BitmapEffectDrawingContextWalker.cs
- MetadataPropertyvalue.cs
- PostBackTrigger.cs
- ApplicationManager.cs
- BamlLocalizer.cs
- PasswordTextNavigator.cs
- SettingsProperty.cs
- ReachUIElementCollectionSerializer.cs
- MemberProjectionIndex.cs
- BinarySerializer.cs
- DSACryptoServiceProvider.cs
- RootBrowserWindowProxy.cs
- VisemeEventArgs.cs
- MsmqIntegrationProcessProtocolHandler.cs
- JsonEnumDataContract.cs
- AbstractExpressions.cs
- ConfigurationElement.cs
- UnionCodeGroup.cs
- uribuilder.cs
- DynamicValidatorEventArgs.cs
- WebPartManagerInternals.cs
- PackageRelationshipSelector.cs
- CultureInfoConverter.cs
- SafeNativeMethods.cs
- FunctionImportMapping.ReturnTypeRenameMapping.cs
- Set.cs
- EntityDataSourceContextCreatingEventArgs.cs
- XmlSchemaComplexType.cs
- System.Data_BID.cs
- StylusPointPropertyInfo.cs
- _CookieModule.cs
- RemoteWebConfigurationHost.cs
- UnsafePeerToPeerMethods.cs
- RegexCompilationInfo.cs
- CodeDOMUtility.cs
- SQLRoleProvider.cs
- COMException.cs
- TableSectionStyle.cs
- SchemaMapping.cs
- OrderedDictionary.cs
- SimplePropertyEntry.cs
- ToolBar.cs
- SmtpNegotiateAuthenticationModule.cs
- CodeCastExpression.cs
- Flattener.cs
- Convert.cs
- FileStream.cs
- GenericIdentity.cs
- Int32Storage.cs
- ProtectedConfigurationSection.cs
- SqlProviderServices.cs
- ObjectCache.cs
- GradientBrush.cs
- BevelBitmapEffect.cs
- CodeTypeDelegate.cs
- CreatingCookieEventArgs.cs
- BitSet.cs
- CatalogPart.cs
- Grant.cs
- _NetRes.cs
- ButtonStandardAdapter.cs
- PerfCounters.cs
- TypedDataSetSchemaImporterExtension.cs
- OutputCacheModule.cs
- ValidatingCollection.cs