Code:
/ Dotnetfx_Vista_SP2 / Dotnetfx_Vista_SP2 / 8.0.50727.4016 / DEVDIV / depot / DevDiv / releases / Orcas / QFE / 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
- TimelineGroup.cs
- XmlSchemaComplexContentExtension.cs
- RadioButtonList.cs
- InstanceData.cs
- TdsParserSafeHandles.cs
- TranslateTransform3D.cs
- LoginAutoFormat.cs
- PrimaryKeyTypeConverter.cs
- DataReaderContainer.cs
- ExtendedPropertyDescriptor.cs
- ProjectionPruner.cs
- _SafeNetHandles.cs
- GroupJoinQueryOperator.cs
- StructuredCompositeActivityDesigner.cs
- MenuItemStyleCollection.cs
- StylusEditingBehavior.cs
- SqlDataAdapter.cs
- BrowserCapabilitiesFactoryBase.cs
- DataRowCollection.cs
- KnownAssembliesSet.cs
- DataQuery.cs
- BitmapData.cs
- RewritingPass.cs
- HealthMonitoringSection.cs
- LocalizableResourceBuilder.cs
- counter.cs
- Pool.cs
- X509Certificate2Collection.cs
- Style.cs
- SmiRecordBuffer.cs
- ZipIOExtraFieldPaddingElement.cs
- ZipIOZip64EndOfCentralDirectoryBlock.cs
- ConfigXmlElement.cs
- XmlLinkedNode.cs
- DynamicValidatorEventArgs.cs
- RegistryConfigurationProvider.cs
- DefaultShape.cs
- CodeAssignStatement.cs
- TextBlock.cs
- MaxSessionCountExceededException.cs
- IntAverageAggregationOperator.cs
- TextBreakpoint.cs
- DataSvcMapFileSerializer.cs
- ToolboxItemAttribute.cs
- ConnectionPoint.cs
- BlurEffect.cs
- PtsContext.cs
- MultiBindingExpression.cs
- AppLevelCompilationSectionCache.cs
- ToolStripComboBox.cs
- HtmlImageAdapter.cs
- Style.cs
- IDReferencePropertyAttribute.cs
- WhitespaceRuleReader.cs
- PropertyManager.cs
- OracleBFile.cs
- NestPullup.cs
- EncryptedPackageFilter.cs
- SoapExtensionTypeElement.cs
- GenericUriParser.cs
- LayoutEditorPart.cs
- FixedSOMLineRanges.cs
- WebBrowser.cs
- xmlglyphRunInfo.cs
- ServerIdentity.cs
- BasicKeyConstraint.cs
- RenderData.cs
- EntityDataSourceContainerNameConverter.cs
- IsolationInterop.cs
- Int64Converter.cs
- BehaviorEditorPart.cs
- SecurityManager.cs
- CursorConverter.cs
- CodeDirectionExpression.cs
- ReplyChannel.cs
- baseaxisquery.cs
- XmlValueConverter.cs
- OrderByBuilder.cs
- SwitchLevelAttribute.cs
- DescendantOverDescendantQuery.cs
- NamedElement.cs
- HttpPostLocalhostServerProtocol.cs
- HierarchicalDataBoundControlAdapter.cs
- SecurityContextSecurityTokenAuthenticator.cs
- HyperlinkAutomationPeer.cs
- PointAnimationUsingKeyFrames.cs
- NamespaceCollection.cs
- RuntimeIdentifierPropertyAttribute.cs
- XamlStream.cs
- WindowVisualStateTracker.cs
- CodeThrowExceptionStatement.cs
- XmlUrlResolver.cs
- EdmFunction.cs
- SystemResources.cs
- _Events.cs
- PeerApplication.cs
- RequiredFieldValidator.cs
- IgnoreSection.cs
- XmlSignatureManifest.cs
- ConstructorNeedsTagAttribute.cs