Code:
/ 4.0 / 4.0 / DEVDIV_TFS / Dev10 / Releases / RTMRel / wpf / src / Core / CSharp / System / Windows / Media / textformatting / TextLineBreak.cs / 1305600 / 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
- Padding.cs
- SQLBoolean.cs
- ToolTip.cs
- DesignConnection.cs
- ConfigurationSettings.cs
- ClientTarget.cs
- filewebresponse.cs
- OleDbTransaction.cs
- DropShadowEffect.cs
- SkipQueryOptionExpression.cs
- InputChannelAcceptor.cs
- RequestUriProcessor.cs
- AbstractSvcMapFileLoader.cs
- TextTreeUndoUnit.cs
- StreamedWorkflowDefinitionContext.cs
- ReferencedCollectionType.cs
- SafeEventLogReadHandle.cs
- ResourceExpressionBuilder.cs
- ClickablePoint.cs
- QueueProcessor.cs
- TagMapInfo.cs
- Exceptions.cs
- MetadataItem_Static.cs
- UserControlBuildProvider.cs
- ColorPalette.cs
- PowerStatus.cs
- _HelperAsyncResults.cs
- HandlerMappingMemo.cs
- ImageClickEventArgs.cs
- BlobPersonalizationState.cs
- DropShadowBitmapEffect.cs
- TreeViewImageKeyConverter.cs
- ChannelDispatcherCollection.cs
- DNS.cs
- RegisteredDisposeScript.cs
- RegistrationContext.cs
- ChangePasswordDesigner.cs
- SerialPinChanges.cs
- HostProtectionException.cs
- ExceptionTranslationTable.cs
- DataGridViewCheckBoxColumn.cs
- ProvidersHelper.cs
- FixedSOMTableCell.cs
- DetailsViewModeEventArgs.cs
- ThousandthOfEmRealDoubles.cs
- SessionPageStateSection.cs
- XmlWrappingReader.cs
- InfoCardRSACryptoProvider.cs
- FilteredXmlReader.cs
- MLangCodePageEncoding.cs
- XmlSchemaDocumentation.cs
- LinqTreeNodeEvaluator.cs
- RemoteDebugger.cs
- GridViewItemAutomationPeer.cs
- HtmlWindowCollection.cs
- ComponentResourceKeyConverter.cs
- FamilyMap.cs
- TemplateBaseAction.cs
- WorkflowInstanceTerminatedRecord.cs
- BitmapEffectDrawing.cs
- NameScopePropertyAttribute.cs
- XmlSchemaSimpleContentRestriction.cs
- EdmFunction.cs
- _Events.cs
- SqlExpressionNullability.cs
- WizardForm.cs
- PipeStream.cs
- SchemaManager.cs
- COM2ICategorizePropertiesHandler.cs
- EditorZone.cs
- ChtmlMobileTextWriter.cs
- AsyncPostBackErrorEventArgs.cs
- InputLanguageSource.cs
- TextTreeNode.cs
- DbParameterHelper.cs
- UnsafeNativeMethods.cs
- PersonalizableAttribute.cs
- AbstractDataSvcMapFileLoader.cs
- XslCompiledTransform.cs
- PassportAuthenticationEventArgs.cs
- AccessibleObject.cs
- FixedFlowMap.cs
- Exceptions.cs
- CreateUserWizard.cs
- TabControl.cs
- QueryIntervalOp.cs
- InvalidDataException.cs
- QueryCursorEventArgs.cs
- CompositeTypefaceMetrics.cs
- ListBindingConverter.cs
- Binding.cs
- DataGridViewTextBoxEditingControl.cs
- ClassData.cs
- sqlser.cs
- _RequestCacheProtocol.cs
- HtmlInputReset.cs
- EventLogPermission.cs
- Monitor.cs
- ByteRangeDownloader.cs
- DefaultValueConverter.cs