Code:
/ Net / Net / 3.5.50727.3053 / DEVDIV / depot / DevDiv / releases / Orcas / SP / wpf / src / Core / CSharp / MS / Internal / TextFormatting / TextPenaltyModule.cs / 1 / TextPenaltyModule.cs
//------------------------------------------------------------------------ // // Microsoft Windows Client Platform // Copyright (C) Microsoft Corporation // // File: TextPenaltyModule.cs // // Contents: Critical handle wrapping unmanaged text penalty module for // penalty calculation of optimal paragraph vis PTS direct access. // // Spec: http://team/sites/Avalon/Specs/Text%20Formatting%20API.doc // // Created: 4-4-2006 Worachai Chaoweeraprasit (Wchao) // //----------------------------------------------------------------------- using System; using System.Security; using System.Windows.Media; using System.Windows.Media.TextFormatting; using System.Runtime.InteropServices; using MS.Internal.PresentationCore; using SR = MS.Internal.PresentationCore.SR; using SRID = MS.Internal.PresentationCore.SRID; namespace MS.Internal.TextFormatting { ////// Critical handle wrapper of unmanaged text penalty module. This class /// is used exclusively by Framework thru friend-access. It provides direct /// access to the underlying dangerous handle to the unmanaged resource whose /// lifetime is bound to the the underlying LS context. /// [FriendAccessAllowed] // used by Framework internal sealed class TextPenaltyModule : IDisposable { private SecurityCriticalDataForSet_ploPenaltyModule; // Pointer to LS penalty module private bool _isDisposed; /// /// This constructor is called by PInvoke when returning the critical handle /// ////// Critical - as this calls the setter of _ploPenaltyModule. /// Safe - as it does not set the value arbitrarily from the value it receives from caller. /// [SecurityCritical, SecurityTreatAsSafe] internal TextPenaltyModule(SecurityCriticalDataForSetploc) { IntPtr ploPenaltyModule; LsErr lserr = UnsafeNativeMethods.LoAcquirePenaltyModule(ploc.Value, out ploPenaltyModule); if (lserr != LsErr.None) { TextFormatterContext.ThrowExceptionFromLsError(SR.Get(SRID.AcquirePenaltyModuleFailure, lserr), lserr); } _ploPenaltyModule.Value = ploPenaltyModule; } /// /// Finalize penalty module /// ~TextPenaltyModule() { Dispose(false); } ////// Explicitly clean up penalty module /// public void Dispose() { Dispose(true); GC.SuppressFinalize(this); } ////// Critical - as this calls method to dispose unmanaged penalty module. /// Safe - as it does not arbitrarily set critical data. /// [SecurityCritical, SecurityTreatAsSafe] private void Dispose(bool disposing) { if (_ploPenaltyModule.Value != IntPtr.Zero) { UnsafeNativeMethods.LoDisposePenaltyModule(_ploPenaltyModule.Value); _ploPenaltyModule.Value = IntPtr.Zero; _isDisposed = true; GC.KeepAlive(this); } } ////// This method should only be called by Framework to authorize direct access to /// unsafe LS penalty module for exclusive use of PTS during optimal paragraph /// penalty calculation. /// ////// Critical - as this returns pointer to unmanaged memory owned by LS. /// [SecurityCritical] internal IntPtr DangerousGetHandle() { if (_isDisposed) { throw new ObjectDisposedException(SR.Get(SRID.TextPenaltyModuleHasBeenDisposed)); } IntPtr penaltyModuleInternalHandle; LsErr lserr = UnsafeNativeMethods.LoGetPenaltyModuleInternalHandle(_ploPenaltyModule.Value, out penaltyModuleInternalHandle); if (lserr != LsErr.None) TextFormatterContext.ThrowExceptionFromLsError(SR.Get(SRID.GetPenaltyModuleHandleFailure, lserr), lserr); GC.KeepAlive(this); return penaltyModuleInternalHandle; } } } // 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: TextPenaltyModule.cs // // Contents: Critical handle wrapping unmanaged text penalty module for // penalty calculation of optimal paragraph vis PTS direct access. // // Spec: http://team/sites/Avalon/Specs/Text%20Formatting%20API.doc // // Created: 4-4-2006 Worachai Chaoweeraprasit (Wchao) // //----------------------------------------------------------------------- using System; using System.Security; using System.Windows.Media; using System.Windows.Media.TextFormatting; using System.Runtime.InteropServices; using MS.Internal.PresentationCore; using SR = MS.Internal.PresentationCore.SR; using SRID = MS.Internal.PresentationCore.SRID; namespace MS.Internal.TextFormatting { ////// Critical handle wrapper of unmanaged text penalty module. This class /// is used exclusively by Framework thru friend-access. It provides direct /// access to the underlying dangerous handle to the unmanaged resource whose /// lifetime is bound to the the underlying LS context. /// [FriendAccessAllowed] // used by Framework internal sealed class TextPenaltyModule : IDisposable { private SecurityCriticalDataForSet_ploPenaltyModule; // Pointer to LS penalty module private bool _isDisposed; /// /// This constructor is called by PInvoke when returning the critical handle /// ////// Critical - as this calls the setter of _ploPenaltyModule. /// Safe - as it does not set the value arbitrarily from the value it receives from caller. /// [SecurityCritical, SecurityTreatAsSafe] internal TextPenaltyModule(SecurityCriticalDataForSetploc) { IntPtr ploPenaltyModule; LsErr lserr = UnsafeNativeMethods.LoAcquirePenaltyModule(ploc.Value, out ploPenaltyModule); if (lserr != LsErr.None) { TextFormatterContext.ThrowExceptionFromLsError(SR.Get(SRID.AcquirePenaltyModuleFailure, lserr), lserr); } _ploPenaltyModule.Value = ploPenaltyModule; } /// /// Finalize penalty module /// ~TextPenaltyModule() { Dispose(false); } ////// Explicitly clean up penalty module /// public void Dispose() { Dispose(true); GC.SuppressFinalize(this); } ////// Critical - as this calls method to dispose unmanaged penalty module. /// Safe - as it does not arbitrarily set critical data. /// [SecurityCritical, SecurityTreatAsSafe] private void Dispose(bool disposing) { if (_ploPenaltyModule.Value != IntPtr.Zero) { UnsafeNativeMethods.LoDisposePenaltyModule(_ploPenaltyModule.Value); _ploPenaltyModule.Value = IntPtr.Zero; _isDisposed = true; GC.KeepAlive(this); } } ////// This method should only be called by Framework to authorize direct access to /// unsafe LS penalty module for exclusive use of PTS during optimal paragraph /// penalty calculation. /// ////// Critical - as this returns pointer to unmanaged memory owned by LS. /// [SecurityCritical] internal IntPtr DangerousGetHandle() { if (_isDisposed) { throw new ObjectDisposedException(SR.Get(SRID.TextPenaltyModuleHasBeenDisposed)); } IntPtr penaltyModuleInternalHandle; LsErr lserr = UnsafeNativeMethods.LoGetPenaltyModuleInternalHandle(_ploPenaltyModule.Value, out penaltyModuleInternalHandle); if (lserr != LsErr.None) TextFormatterContext.ThrowExceptionFromLsError(SR.Get(SRID.GetPenaltyModuleHandleFailure, lserr), lserr); GC.KeepAlive(this); return penaltyModuleInternalHandle; } } } // 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
- MultiView.cs
- OracleCommandBuilder.cs
- DataObjectFieldAttribute.cs
- SoundPlayer.cs
- HttpCapabilitiesBase.cs
- ResXDataNode.cs
- DataGridViewColumn.cs
- Baml2006ReaderSettings.cs
- ScaleTransform3D.cs
- AppDomainFactory.cs
- SqlConnectionPoolGroupProviderInfo.cs
- OdbcCommand.cs
- ViewBox.cs
- KeyValuePair.cs
- TextEditorTables.cs
- shaperfactoryquerycachekey.cs
- SqlProviderManifest.cs
- HandlerBase.cs
- XmlMtomReader.cs
- ActivationServices.cs
- Walker.cs
- _KerberosClient.cs
- CaseInsensitiveComparer.cs
- TypeConverterMarkupExtension.cs
- ObjectListShowCommandsEventArgs.cs
- CompositeCollectionView.cs
- EventsTab.cs
- GridEntry.cs
- WebBrowserEvent.cs
- RelationshipManager.cs
- SqlClientWrapperSmiStream.cs
- WriteTimeStream.cs
- Knowncolors.cs
- XmlC14NWriter.cs
- InvalidTimeZoneException.cs
- Size3DConverter.cs
- ToolStripSplitButton.cs
- EntitySqlQueryBuilder.cs
- PartialCachingControl.cs
- DataGridViewHeaderCell.cs
- XmlSerializer.cs
- DriveInfo.cs
- QilDataSource.cs
- SemanticTag.cs
- QuaternionAnimationUsingKeyFrames.cs
- HostProtectionException.cs
- LayoutInformation.cs
- PersonalizablePropertyEntry.cs
- COSERVERINFO.cs
- RemoteWebConfigurationHost.cs
- DataGridViewCellStyleContentChangedEventArgs.cs
- TagMapCollection.cs
- Journaling.cs
- HostingEnvironmentSection.cs
- VectorCollection.cs
- CornerRadiusConverter.cs
- CodeDomSerializer.cs
- OSEnvironmentHelper.cs
- HttpHostedTransportConfiguration.cs
- CodeAttributeDeclaration.cs
- CatalogPart.cs
- Table.cs
- OracleParameterCollection.cs
- TaskFormBase.cs
- PrimarySelectionAdorner.cs
- SurrogateEncoder.cs
- MultiPartWriter.cs
- Control.cs
- BaseParser.cs
- XsdBuildProvider.cs
- TextMarkerSource.cs
- SyndicationContent.cs
- TextTreeTextElementNode.cs
- RoleManagerModule.cs
- MessageEnumerator.cs
- TextRunTypographyProperties.cs
- PathSegmentCollection.cs
- LayoutEvent.cs
- MatrixAnimationUsingPath.cs
- SmtpSpecifiedPickupDirectoryElement.cs
- ActivationServices.cs
- MappingModelBuildProvider.cs
- ParameterCollection.cs
- CheckBox.cs
- MemberRelationshipService.cs
- EntityDataReader.cs
- XmlNullResolver.cs
- FixedSOMPageElement.cs
- DocumentOrderComparer.cs
- PolygonHotSpot.cs
- StringUtil.cs
- SQLDecimal.cs
- Maps.cs
- TabItemWrapperAutomationPeer.cs
- ResourceManager.cs
- XslVisitor.cs
- ToolStripProgressBar.cs
- WebPartActionVerb.cs
- ComponentDispatcher.cs
- CatalogZoneBase.cs