Code:
/ DotNET / DotNET / 8.0 / untmp / WIN_WINDOWS / lh_tools_devdiv_wpf / Windows / wcp / Core / System / Windows / Input / Stylus / RawStylusInputReport.cs / 1 / 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.
Link Menu
This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- CaseExpr.cs
- SchemaExporter.cs
- ObjectSecurity.cs
- XmlSchemaIdentityConstraint.cs
- DrawingImage.cs
- CounterSample.cs
- FlowDocumentReader.cs
- TextAdaptor.cs
- XmlBinaryReader.cs
- BamlLocalizationDictionary.cs
- WindowInteractionStateTracker.cs
- RootBrowserWindow.cs
- Int64Storage.cs
- TransformGroup.cs
- IdentityVerifier.cs
- RegionIterator.cs
- RowSpanVector.cs
- Underline.cs
- HtmlImage.cs
- ShapeTypeface.cs
- OracleConnection.cs
- PathSegmentCollection.cs
- WebPartZoneCollection.cs
- CounterSample.cs
- ItemMap.cs
- Main.cs
- SafeCloseHandleCritical.cs
- SQLConvert.cs
- SafeRightsManagementPubHandle.cs
- ManipulationDevice.cs
- XmlAttributeOverrides.cs
- ContainerUtilities.cs
- TextTreeInsertElementUndoUnit.cs
- HotSpot.cs
- RegistryConfigurationProvider.cs
- TabItemAutomationPeer.cs
- FileSystemWatcher.cs
- SetStoryboardSpeedRatio.cs
- PerformanceCounter.cs
- MappedMetaModel.cs
- UInt16Storage.cs
- DocumentXmlWriter.cs
- SrgsGrammar.cs
- WsatServiceCertificate.cs
- ExpressionBuilderContext.cs
- WebConfigurationManager.cs
- GACIdentityPermission.cs
- ObjectDataSourceSelectingEventArgs.cs
- SelectManyQueryOperator.cs
- FilterElement.cs
- RuntimeEnvironment.cs
- DateTimePicker.cs
- QfeChecker.cs
- X509Extension.cs
- WindowsFormsSectionHandler.cs
- SettingsPropertyIsReadOnlyException.cs
- EventDescriptorCollection.cs
- ToolStripMenuItem.cs
- KeyValuePairs.cs
- ExpressionBinding.cs
- XamlToRtfParser.cs
- _ConnectionGroup.cs
- ExpiredSecurityTokenException.cs
- HttpRequestCacheValidator.cs
- WriterOutput.cs
- TextBox.cs
- ToolStripMenuItemCodeDomSerializer.cs
- PositiveTimeSpanValidator.cs
- HttpRuntimeSection.cs
- StyleSheetRefUrlEditor.cs
- GridViewEditEventArgs.cs
- AuthenticationModuleElementCollection.cs
- IconConverter.cs
- XmlValidatingReader.cs
- WeakReference.cs
- CodeDelegateCreateExpression.cs
- ErrorReporting.cs
- _HeaderInfo.cs
- PointCollectionValueSerializer.cs
- ObjRef.cs
- MouseDevice.cs
- XmlSchemaSimpleContentExtension.cs
- RemoteWebConfigurationHost.cs
- Module.cs
- safesecurityhelperavalon.cs
- Utils.cs
- CreateUserWizardAutoFormat.cs
- LineServicesCallbacks.cs
- Metadata.cs
- CanonicalXml.cs
- VerticalConnector.xaml.cs
- BamlResourceSerializer.cs
- Exception.cs
- EdmFunction.cs
- HostingEnvironment.cs
- HtmlTableCellCollection.cs
- SqlCrossApplyToCrossJoin.cs
- LocatorManager.cs
- DataBindingHandlerAttribute.cs
- ResourceSet.cs