Code:
/ 4.0 / 4.0 / DEVDIV_TFS / Dev10 / Releases / RTMRel / wpf / src / Core / CSharp / System / Windows / Input / Stylus / RawStylusInputReport.cs / 1305600 / RawStylusInputReport.cs
using System; using System.ComponentModel; using System.Windows; using System.Windows.Threading; using System.Windows.Media; using System.Windows.Input.StylusPlugIns; using System.Security; using System.Security.Permissions; using MS.Internal.PresentationCore; // SecurityHelper using MS.Internal; using SR=MS.Internal.PresentationCore.SR; using SRID=MS.Internal.PresentationCore.SRID; namespace System.Windows.Input { ///////////////////////////////////////////////////////////////////////// ////// The RawStylusInputReport class encapsulates the raw input provided /// from a stylus. /// ////// It is important to note that the InputReport class only contains /// blittable types. This is required so that the report can be /// marshalled across application domains. /// internal class RawStylusInputReport : InputReport { ///////////////////////////////////////////////////////////////////// ////// Constructs an instance of the RawStylusInputReport class. /// /// /// The mode in which the input is being provided. /// /// /// The time when the input occured. /// /// /// The PresentationSource over which the stylus moved. /// /// /// The PenContext. /// /// /// The set of actions being reported. /// /// /// Tablet device id. /// /// /// Stylus device id. /// /// /// Raw stylus data. /// ////// Critical: This handles critical data in the form of PresentationSource. /// TreatAsSafe:There are demands on the critical data(PresentationSource) /// [SecurityCritical,SecurityTreatAsSafe] internal RawStylusInputReport( InputMode mode, int timestamp, PresentationSource inputSource, PenContext penContext, RawStylusActions actions, int tabletDeviceId, int stylusDeviceId, int[] data) : base(inputSource, InputType.Stylus, mode, timestamp) { // Validate parameters if (!RawStylusActionsHelper.IsValid(actions)) { throw new InvalidEnumArgumentException(SR.Get(SRID.Enum_Invalid, "actions")); } if (data == null && actions != RawStylusActions.InRange) { throw new ArgumentNullException("data"); } _penContext = new SecurityCriticalDataClass(penContext); _actions = actions; _tabletDeviceId = tabletDeviceId; _stylusDeviceId = stylusDeviceId; _data = data; _isSynchronize = false; } ///////////////////////////////////////////////////////////////////// /// /// Constructs an instance of the RawStylusInputReport class. /// /// /// The mode in which the input is being provided. /// /// /// The time when the input occured. /// /// /// The PresentationSource over which the stylus moved. /// /// /// The set of actions being reported. /// /// /// Raw stylus data StylusPointDescription. /// /// /// Raw stylus data. /// ////// Critical: This handles critical data in the form of PresentationSource. /// TreatAsSafe:There are demands on the critical data(PresentationSource) /// [SecurityCritical,SecurityTreatAsSafe] internal RawStylusInputReport( InputMode mode, int timestamp, PresentationSource inputSource, RawStylusActions actions, StylusPointDescription mousePointDescription, int[] mouseData) : base(inputSource, InputType.Stylus, mode, timestamp) { // Validate parameters if (!RawStylusActionsHelper.IsValid(actions)) { throw new InvalidEnumArgumentException(SR.Get(SRID.Enum_Invalid, "actions")); } if (mouseData == null) { throw new ArgumentNullException("mouseData"); } _penContext = new SecurityCriticalDataClass(null); _actions = actions; _tabletDeviceId = 0; _stylusDeviceId = 0; _data = mouseData; _isSynchronize = false; _mousePointDescription = mousePointDescription; _isMouseInput = true; } ///////////////////////////////////////////////////////////////////// /// /// Read-only access to the set of actions that were reported. /// internal RawStylusActions Actions { get { return _actions; } } ///////////////////////////////////////////////////////////////////// ////// Read-only access to stylus context id that reported the data. /// internal int TabletDeviceId { get { return _tabletDeviceId; } } ///////////////////////////////////////////////////////////////////// ////// Read-only access to stylus context id that reported the data. /// ////// Critical: provides access to critical member _penContext /// internal PenContext PenContext { [SecurityCritical] get { return _penContext.Value; } } ///////////////////////////////////////////////////////////////////// ////// Read-only access to stylus context id that reported the data. /// ////// Critical: This handles critical data _penContext /// TreatAsSafe: We're returning safe data /// internal StylusPointDescription StylusPointDescription { [SecurityCritical, SecurityTreatAsSafe] get { return _isMouseInput ? _mousePointDescription : _penContext.Value.StylusPointDescription; } } ///////////////////////////////////////////////////////////////////// ////// Read-only access to stylus device id that reported the data. /// internal int StylusDeviceId { get { return _stylusDeviceId; } } ///////////////////////////////////////////////////////////////////// internal StylusDevice StylusDevice { get { return _stylusDevice; } set { _stylusDevice = value; } } ///////////////////////////////////////////////////////////////////// ////// Read-only access to the raw data that was reported. /// ////// Critical: Access the critical field - _data /// TreatAsSafe: No input is taken. It's safe to a clone. /// [SecurityCritical, SecurityTreatAsSafe] internal int[] GetRawPacketData() { if (_data == null) return null; return (int[])_data.Clone(); } ///////////////////////////////////////////////////////////////////// ////// Critical: Access the critical field - _data /// TreatAsSafe: No input is taken. It's safe to return the last tablet point. /// [SecurityCritical, SecurityTreatAsSafe] internal Point GetLastTabletPoint() { int packetLength = StylusPointDescription.GetInputArrayLengthPerPoint(); int lastXIndex = _data.Length - packetLength; return new Point(_data[lastXIndex], _data[lastXIndex + 1]); } ///////////////////////////////////////////////////////////////////// ////// Critical - Hands out ref to internal data that can be used to spoof input. /// internal int[] Data { [SecurityCritical] get { return _data; } } ///////////////////////////////////////////////////////////////////// ////// Critical - Setting property can be used to spoof input. /// internal RawStylusInput RawStylusInput { get { return _rawStylusInput.Value; } [SecurityCritical] set { _rawStylusInput.Value = value; } } ///////////////////////////////////////////////////////////////////// internal bool Synchronized { get { return _isSynchronize; } set { _isSynchronize = value; } } ///////////////////////////////////////////////////////////////////// RawStylusActions _actions; int _tabletDeviceId; ////// Critical: Marked critical to prevent inadvertant spread to transparent code /// private SecurityCriticalDataClass_penContext; int _stylusDeviceId; /// /// Critical to prevent accidental spread to transparent code /// [SecurityCritical] int[] _data; StylusDevice _stylusDevice; // cached value looked up from _stylusDeviceId SecurityCriticalDataForSet_rawStylusInput; bool _isSynchronize; // Set from StylusDevice.Synchronize. bool _isMouseInput; // Special case of mouse input being sent to plugins StylusPointDescription _mousePointDescription; // layout for mouse points } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved. using System; using System.ComponentModel; using System.Windows; using System.Windows.Threading; using System.Windows.Media; using System.Windows.Input.StylusPlugIns; using System.Security; using System.Security.Permissions; using MS.Internal.PresentationCore; // SecurityHelper using MS.Internal; using SR=MS.Internal.PresentationCore.SR; using SRID=MS.Internal.PresentationCore.SRID; namespace System.Windows.Input { ///////////////////////////////////////////////////////////////////////// /// /// The RawStylusInputReport class encapsulates the raw input provided /// from a stylus. /// ////// It is important to note that the InputReport class only contains /// blittable types. This is required so that the report can be /// marshalled across application domains. /// internal class RawStylusInputReport : InputReport { ///////////////////////////////////////////////////////////////////// ////// Constructs an instance of the RawStylusInputReport class. /// /// /// The mode in which the input is being provided. /// /// /// The time when the input occured. /// /// /// The PresentationSource over which the stylus moved. /// /// /// The PenContext. /// /// /// The set of actions being reported. /// /// /// Tablet device id. /// /// /// Stylus device id. /// /// /// Raw stylus data. /// ////// Critical: This handles critical data in the form of PresentationSource. /// TreatAsSafe:There are demands on the critical data(PresentationSource) /// [SecurityCritical,SecurityTreatAsSafe] internal RawStylusInputReport( InputMode mode, int timestamp, PresentationSource inputSource, PenContext penContext, RawStylusActions actions, int tabletDeviceId, int stylusDeviceId, int[] data) : base(inputSource, InputType.Stylus, mode, timestamp) { // Validate parameters if (!RawStylusActionsHelper.IsValid(actions)) { throw new InvalidEnumArgumentException(SR.Get(SRID.Enum_Invalid, "actions")); } if (data == null && actions != RawStylusActions.InRange) { throw new ArgumentNullException("data"); } _penContext = new SecurityCriticalDataClass(penContext); _actions = actions; _tabletDeviceId = tabletDeviceId; _stylusDeviceId = stylusDeviceId; _data = data; _isSynchronize = false; } ///////////////////////////////////////////////////////////////////// /// /// Constructs an instance of the RawStylusInputReport class. /// /// /// The mode in which the input is being provided. /// /// /// The time when the input occured. /// /// /// The PresentationSource over which the stylus moved. /// /// /// The set of actions being reported. /// /// /// Raw stylus data StylusPointDescription. /// /// /// Raw stylus data. /// ////// Critical: This handles critical data in the form of PresentationSource. /// TreatAsSafe:There are demands on the critical data(PresentationSource) /// [SecurityCritical,SecurityTreatAsSafe] internal RawStylusInputReport( InputMode mode, int timestamp, PresentationSource inputSource, RawStylusActions actions, StylusPointDescription mousePointDescription, int[] mouseData) : base(inputSource, InputType.Stylus, mode, timestamp) { // Validate parameters if (!RawStylusActionsHelper.IsValid(actions)) { throw new InvalidEnumArgumentException(SR.Get(SRID.Enum_Invalid, "actions")); } if (mouseData == null) { throw new ArgumentNullException("mouseData"); } _penContext = new SecurityCriticalDataClass(null); _actions = actions; _tabletDeviceId = 0; _stylusDeviceId = 0; _data = mouseData; _isSynchronize = false; _mousePointDescription = mousePointDescription; _isMouseInput = true; } ///////////////////////////////////////////////////////////////////// /// /// Read-only access to the set of actions that were reported. /// internal RawStylusActions Actions { get { return _actions; } } ///////////////////////////////////////////////////////////////////// ////// Read-only access to stylus context id that reported the data. /// internal int TabletDeviceId { get { return _tabletDeviceId; } } ///////////////////////////////////////////////////////////////////// ////// Read-only access to stylus context id that reported the data. /// ////// Critical: provides access to critical member _penContext /// internal PenContext PenContext { [SecurityCritical] get { return _penContext.Value; } } ///////////////////////////////////////////////////////////////////// ////// Read-only access to stylus context id that reported the data. /// ////// Critical: This handles critical data _penContext /// TreatAsSafe: We're returning safe data /// internal StylusPointDescription StylusPointDescription { [SecurityCritical, SecurityTreatAsSafe] get { return _isMouseInput ? _mousePointDescription : _penContext.Value.StylusPointDescription; } } ///////////////////////////////////////////////////////////////////// ////// Read-only access to stylus device id that reported the data. /// internal int StylusDeviceId { get { return _stylusDeviceId; } } ///////////////////////////////////////////////////////////////////// internal StylusDevice StylusDevice { get { return _stylusDevice; } set { _stylusDevice = value; } } ///////////////////////////////////////////////////////////////////// ////// Read-only access to the raw data that was reported. /// ////// Critical: Access the critical field - _data /// TreatAsSafe: No input is taken. It's safe to a clone. /// [SecurityCritical, SecurityTreatAsSafe] internal int[] GetRawPacketData() { if (_data == null) return null; return (int[])_data.Clone(); } ///////////////////////////////////////////////////////////////////// ////// Critical: Access the critical field - _data /// TreatAsSafe: No input is taken. It's safe to return the last tablet point. /// [SecurityCritical, SecurityTreatAsSafe] internal Point GetLastTabletPoint() { int packetLength = StylusPointDescription.GetInputArrayLengthPerPoint(); int lastXIndex = _data.Length - packetLength; return new Point(_data[lastXIndex], _data[lastXIndex + 1]); } ///////////////////////////////////////////////////////////////////// ////// Critical - Hands out ref to internal data that can be used to spoof input. /// internal int[] Data { [SecurityCritical] get { return _data; } } ///////////////////////////////////////////////////////////////////// ////// Critical - Setting property can be used to spoof input. /// internal RawStylusInput RawStylusInput { get { return _rawStylusInput.Value; } [SecurityCritical] set { _rawStylusInput.Value = value; } } ///////////////////////////////////////////////////////////////////// internal bool Synchronized { get { return _isSynchronize; } set { _isSynchronize = value; } } ///////////////////////////////////////////////////////////////////// RawStylusActions _actions; int _tabletDeviceId; ////// Critical: Marked critical to prevent inadvertant spread to transparent code /// private SecurityCriticalDataClass_penContext; int _stylusDeviceId; /// /// Critical to prevent accidental spread to transparent code /// [SecurityCritical] int[] _data; StylusDevice _stylusDevice; // cached value looked up from _stylusDeviceId SecurityCriticalDataForSet_rawStylusInput; bool _isSynchronize; // Set from StylusDevice.Synchronize. bool _isMouseInput; // Special case of mouse input being sent to plugins StylusPointDescription _mousePointDescription; // layout for mouse points } } // 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
- ResourceProviderFactory.cs
- ConstrainedDataObject.cs
- MaxValueConverter.cs
- ExternalDataExchangeService.cs
- EntityTemplateFactory.cs
- WeakReferenceList.cs
- Component.cs
- TrustManagerPromptUI.cs
- ObjectQuery_EntitySqlExtensions.cs
- ReadOnlyCollectionBuilder.cs
- InArgument.cs
- VariableElement.cs
- Registry.cs
- LocalServiceSecuritySettingsElement.cs
- MessageLogger.cs
- XmlDataLoader.cs
- RTLAwareMessageBox.cs
- MetadataSource.cs
- SchemaCollectionPreprocessor.cs
- BitmapEffectGeneralTransform.cs
- SourceInterpreter.cs
- EventHandlingScope.cs
- AppSettingsSection.cs
- Cloud.cs
- ClonableStack.cs
- LicenseContext.cs
- FontResourceCache.cs
- DetailsViewPagerRow.cs
- WriteLineDesigner.xaml.cs
- EditCommandColumn.cs
- CustomWebEventKey.cs
- RoleManagerSection.cs
- KeyEventArgs.cs
- Transform.cs
- precedingsibling.cs
- ServiceDescription.cs
- TrackingServices.cs
- ConfigurationCollectionAttribute.cs
- IteratorFilter.cs
- LabelEditEvent.cs
- WebPartEditorApplyVerb.cs
- UniqueCodeIdentifierScope.cs
- SimpleMailWebEventProvider.cs
- SafeCertificateContext.cs
- ContractCodeDomInfo.cs
- DesignerObjectListAdapter.cs
- Mappings.cs
- PriorityBindingExpression.cs
- ObjectSecurity.cs
- Shape.cs
- EpmCustomContentSerializer.cs
- DataListCommandEventArgs.cs
- RevocationPoint.cs
- TargetFrameworkAttribute.cs
- AppDomainGrammarProxy.cs
- ELinqQueryState.cs
- InvalidWMPVersionException.cs
- ConfigsHelper.cs
- ValidateNames.cs
- ThreadStateException.cs
- DomainConstraint.cs
- XpsThumbnail.cs
- OrderByQueryOptionExpression.cs
- SymmetricAlgorithm.cs
- DictionaryEntry.cs
- FileClassifier.cs
- CookielessHelper.cs
- QueryStringParameter.cs
- DoWorkEventArgs.cs
- HttpStreamXmlDictionaryWriter.cs
- SspiSecurityTokenProvider.cs
- XmlSchemaComplexContentRestriction.cs
- OdbcCommandBuilder.cs
- SmtpClient.cs
- Synchronization.cs
- EndEvent.cs
- GenericTypeParameterBuilder.cs
- ServiceChannelManager.cs
- Label.cs
- QilSortKey.cs
- StylusTip.cs
- XPathDocumentBuilder.cs
- DataServiceClientException.cs
- IssuedTokenClientElement.cs
- ListViewItemEventArgs.cs
- ComplexObject.cs
- SystemFonts.cs
- DbConnectionPoolOptions.cs
- shaperfactory.cs
- NativeMethods.cs
- LingerOption.cs
- XPathDescendantIterator.cs
- MD5Cng.cs
- RangeBaseAutomationPeer.cs
- StorageEndPropertyMapping.cs
- StatusStrip.cs
- LinqExpressionNormalizer.cs
- HostingMessageProperty.cs
- SystemIPGlobalStatistics.cs
- SignerInfo.cs