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
- AstTree.cs
- CompilerResults.cs
- ServerValidateEventArgs.cs
- TextProviderWrapper.cs
- StorageConditionPropertyMapping.cs
- FileUpload.cs
- WebPartDescription.cs
- StreamGeometryContext.cs
- VirtualDirectoryMappingCollection.cs
- DataSourceControl.cs
- Bitmap.cs
- MarkupExtensionReturnTypeAttribute.cs
- ContractCodeDomInfo.cs
- ToolStripContentPanelRenderEventArgs.cs
- PageCodeDomTreeGenerator.cs
- EntityDesignerBuildProvider.cs
- EventWaitHandle.cs
- DataListItemEventArgs.cs
- MenuCommand.cs
- RoleGroupCollection.cs
- GeometryHitTestResult.cs
- Instrumentation.cs
- OrderedDictionaryStateHelper.cs
- ImmutableAssemblyCacheEntry.cs
- TextFormatterImp.cs
- TraversalRequest.cs
- SByteConverter.cs
- XmlSerializer.cs
- TextBoxBase.cs
- InplaceBitmapMetadataWriter.cs
- DBCSCodePageEncoding.cs
- MarkupProperty.cs
- CustomTypeDescriptor.cs
- PermissionListSet.cs
- XmlStreamNodeWriter.cs
- ImpersonationContext.cs
- NavigateUrlConverter.cs
- NavigationService.cs
- EntityTypeEmitter.cs
- _CacheStreams.cs
- AncestorChangedEventArgs.cs
- EdmScalarPropertyAttribute.cs
- TypeToken.cs
- LinqDataSourceView.cs
- PersonalizationStateInfoCollection.cs
- WindowsScrollBar.cs
- HostingEnvironment.cs
- CallbackException.cs
- AQNBuilder.cs
- TemplatedMailWebEventProvider.cs
- RectConverter.cs
- TableCellAutomationPeer.cs
- VisualTarget.cs
- SystemInformation.cs
- Renderer.cs
- MultiPropertyDescriptorGridEntry.cs
- OrderedDictionary.cs
- GenericTextProperties.cs
- WebPartHelpVerb.cs
- TablePattern.cs
- RemotingConfigParser.cs
- SafeRightsManagementSessionHandle.cs
- ReferenceSchema.cs
- FormsIdentity.cs
- RegexInterpreter.cs
- ViewSimplifier.cs
- CodeEventReferenceExpression.cs
- EncodingNLS.cs
- TargetException.cs
- MultiView.cs
- ConstNode.cs
- TextCompositionEventArgs.cs
- SetterBaseCollection.cs
- Message.cs
- HttpListenerTimeoutManager.cs
- EntityDataReader.cs
- ReadOnlyObservableCollection.cs
- QueryContinueDragEventArgs.cs
- LogRecordSequence.cs
- SqlSupersetValidator.cs
- ObjectConverter.cs
- TemplateXamlTreeBuilder.cs
- FontStyles.cs
- XmlReflectionImporter.cs
- LinqDataSourceDisposeEventArgs.cs
- Matrix3D.cs
- PageThemeCodeDomTreeGenerator.cs
- ToolStripOverflow.cs
- TypeConverterAttribute.cs
- DesignerProperties.cs
- RandomNumberGenerator.cs
- StrongTypingException.cs
- HtmlInputControl.cs
- UInt64Storage.cs
- HashRepartitionStream.cs
- VarRefManager.cs
- ZipIOModeEnforcingStream.cs
- OdbcConnectionStringbuilder.cs
- StatusBarDesigner.cs
- ContextMenu.cs