Code:
/ 4.0 / 4.0 / untmp / 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.
Link Menu
This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- SystemResourceHost.cs
- AdPostCacheSubstitution.cs
- BitmapEffectDrawing.cs
- SortDescription.cs
- InputLangChangeEvent.cs
- PersonalizableTypeEntry.cs
- SystemWebExtensionsSectionGroup.cs
- UserControlCodeDomTreeGenerator.cs
- ContainerUtilities.cs
- PersonalizablePropertyEntry.cs
- NameValuePair.cs
- SuppressIldasmAttribute.cs
- RepeatButtonAutomationPeer.cs
- Predicate.cs
- SQLDoubleStorage.cs
- Model3DCollection.cs
- ConfigXmlSignificantWhitespace.cs
- SynchronizedRandom.cs
- GridEntry.cs
- CodePropertyReferenceExpression.cs
- InternalRelationshipCollection.cs
- NodeFunctions.cs
- StyleCollectionEditor.cs
- arc.cs
- KeyMatchBuilder.cs
- LoginView.cs
- DataServiceQueryException.cs
- RewritingSimplifier.cs
- CounterCreationDataCollection.cs
- BitmapInitialize.cs
- ObjectItemCollection.cs
- GestureRecognizer.cs
- HttpListenerPrefixCollection.cs
- EdmEntityTypeAttribute.cs
- ConstrainedDataObject.cs
- ResourceExpression.cs
- RotationValidation.cs
- Tile.cs
- VBIdentifierTrimConverter.cs
- FrameworkContextData.cs
- WebPartZoneDesigner.cs
- ThumbButtonInfo.cs
- Thread.cs
- SingleSelectRootGridEntry.cs
- XmlElementList.cs
- ElementAction.cs
- FixedTextContainer.cs
- XmlCharType.cs
- RawAppCommandInputReport.cs
- MatrixTransform.cs
- TreeNodeCollectionEditorDialog.cs
- MemberInitExpression.cs
- ChangeProcessor.cs
- ToolStripLocationCancelEventArgs.cs
- RoleManagerModule.cs
- PingOptions.cs
- StateBag.cs
- Completion.cs
- ScriptingSectionGroup.cs
- ManagementException.cs
- BamlResourceContent.cs
- ContainsSearchOperator.cs
- XsltArgumentList.cs
- TempFiles.cs
- ImpersonationContext.cs
- ContentIterators.cs
- KeyValueInternalCollection.cs
- EntityAdapter.cs
- _NetRes.cs
- BindingBase.cs
- SafeFileMapViewHandle.cs
- XhtmlConformanceSection.cs
- MatrixTransform.cs
- DesignerHelpers.cs
- OutputScopeManager.cs
- ECDiffieHellman.cs
- StructuredTypeEmitter.cs
- UnsettableComboBox.cs
- DescriptionAttribute.cs
- LOSFormatter.cs
- Documentation.cs
- Vector3DAnimationBase.cs
- DragEventArgs.cs
- WebReferenceOptions.cs
- InputScopeAttribute.cs
- TextElementEnumerator.cs
- Encoding.cs
- XmlIlVisitor.cs
- BitmapSourceSafeMILHandle.cs
- ChildDocumentBlock.cs
- HttpRawResponse.cs
- KeyValueSerializer.cs
- CommonDialog.cs
- GroupBox.cs
- XmlSerializableReader.cs
- GridViewDeleteEventArgs.cs
- ListViewSortEventArgs.cs
- SafeNativeMethods.cs
- IfAction.cs
- GridViewEditEventArgs.cs