Code:
/ DotNET / DotNET / 8.0 / untmp / WIN_WINDOWS / lh_tools_devdiv_wpf / Windows / wcp / Core / System / Windows / Input / Stylus / StylusPlugin.cs / 1 / StylusPlugin.cs
// #define TRACE using System; using System.Diagnostics; using System.Collections; using System.Collections.Specialized; using System.Security.Permissions; using System.Windows.Threading; using System.Windows; using System.Windows.Input; using System.Windows.Media; using MS.Win32; // for *NativeMethods namespace System.Windows.Input.StylusPlugIns { ///////////////////////////////////////////////////////////////////// ////// [TBS] /// public abstract class StylusPlugIn { ///////////////////////////////////////////////////////////////////// ////// [TBS] - on Dispatcher /// protected StylusPlugIn() { } ///////////////////////////////////////////////////////////////////// // (in Dispatcher) internal void Added(StylusPlugInCollection plugInCollection) { _pic = plugInCollection; OnAdded(); InvalidateIsActiveForInput(); // Make sure we fire OnIsActivateForInputChanged. } ///////////////////////////////////////////////////////////////////// ////// [TBS] - on Dispatcher /// protected virtual void OnAdded() { } ///////////////////////////////////////////////////////////////////// // (in Dispatcher) internal void Removed() { // Make sure we fire OnIsActivateForInputChanged if we need to. if (_activeForInput) { InvalidateIsActiveForInput(); } OnRemoved(); _pic = null; } ///////////////////////////////////////////////////////////////////// ////// [TBS] - on Dispatcher /// protected virtual void OnRemoved() { } ///////////////////////////////////////////////////////////////////// // (in RTI Dispatcher) internal void StylusEnterLeave(bool isEnter, RawStylusInput rawStylusInput, bool confirmed) { // Only fire if plugin is enabled and hooked up to plugincollection. if (__enabled && _pic != null) { if (isEnter) OnStylusEnter(rawStylusInput, confirmed); else OnStylusLeave(rawStylusInput, confirmed); } } ///////////////////////////////////////////////////////////////////// // (in RTI Dispatcher) internal void RawStylusInput(RawStylusInput rawStylusInput) { // Only fire if plugin is enabled and hooked up to plugincollection. if (__enabled && _pic != null) { switch( rawStylusInput.Report.Actions ) { case RawStylusActions.Down: OnStylusDown(rawStylusInput); break; case RawStylusActions.Move: OnStylusMove(rawStylusInput); break; case RawStylusActions.Up: OnStylusUp(rawStylusInput); break; } } } ///////////////////////////////////////////////////////////////////// ////// [TBS] - on RTI Dispatcher /// protected virtual void OnStylusEnter(RawStylusInput rawStylusInput, bool confirmed) { } ///////////////////////////////////////////////////////////////////// ////// [TBS] - on RTI Dispatcher /// protected virtual void OnStylusLeave(RawStylusInput rawStylusInput, bool confirmed) { } ///////////////////////////////////////////////////////////////////// ////// [TBS] - on RTI Dispatcher /// protected virtual void OnStylusDown(RawStylusInput rawStylusInput) { } ///////////////////////////////////////////////////////////////////// ////// [TBS] - on RTI Dispatcher /// protected virtual void OnStylusMove(RawStylusInput rawStylusInput) { } ///////////////////////////////////////////////////////////////////// ////// [TBS] - on RTI Dispatcher /// protected virtual void OnStylusUp(RawStylusInput rawStylusInput) { } ///////////////////////////////////////////////////////////////////// // (on app Dispatcher) internal void FireCustomData(object callbackData, RawStylusActions action, bool targetVerified) { // Only fire if plugin is enabled and hooked up to plugincollection. if (__enabled && _pic != null) { switch (action) { case RawStylusActions.Down: OnStylusDownProcessed(callbackData, targetVerified); break; case RawStylusActions.Move: OnStylusMoveProcessed(callbackData, targetVerified); break; case RawStylusActions.Up: OnStylusUpProcessed(callbackData, targetVerified); break; } } } ///////////////////////////////////////////////////////////////////// ////// [TBS] - on app Dispatcher /// protected virtual void OnStylusDownProcessed(object callbackData, bool targetVerified) { } ///////////////////////////////////////////////////////////////////// ////// [TBS] - on app Dispatcher /// protected virtual void OnStylusMoveProcessed(object callbackData, bool targetVerified) { } ///////////////////////////////////////////////////////////////////// ////// [TBS] - on app Dispatcher /// protected virtual void OnStylusUpProcessed(object callbackData, bool targetVerified) { } ///////////////////////////////////////////////////////////////////// ////// [TBS] - both Dispatchers /// public UIElement Element { get { return (_pic != null) ? _pic.Element : null; } } ///////////////////////////////////////////////////////////////////// ////// [TBS] - both Dispatchers /// public Rect ElementBounds { get { return (_pic != null) ? _pic.Rect : new Rect(); } } ///////////////////////////////////////////////////////////////////// ////// [TBS] - get - both Dispatchers, set Dispatcher /// public bool Enabled { get // both Dispatchers { return __enabled; } set // on Dispatcher { // Verify we are on the proper thread. if (_pic != null) { _pic.Element.VerifyAccess(); } if (value != __enabled) { // If we are currently active for input we need to lock before input before // changing so we don't get input coming in before event is fired. if (_pic != null && _pic.IsActiveForInput) { // Make sure lock() doesn't cause reentrancy. using(_pic.Element.Dispatcher.DisableProcessing()) { lock(_pic.PenContextsSyncRoot) { // Make sure we fire the OnEnabledChanged event in the proper order // depending on whether we are going active or inactive so you don't // get input events after going inactive or before going active. __enabled = value; if (value == false) { // Make sure we fire OnIsActivateForInputChanged if we need to. InvalidateIsActiveForInput(); OnEnabledChanged(); } else { OnEnabledChanged(); InvalidateIsActiveForInput(); } } } } else { __enabled = value; if (value == false) { // Make sure we fire OnIsActivateForInputChanged if we need to. InvalidateIsActiveForInput(); OnEnabledChanged(); } else { OnEnabledChanged(); InvalidateIsActiveForInput(); } } } } } ///////////////////////////////////////////////////////////////////// ////// [TBS] - on app Dispatcher /// protected virtual void OnEnabledChanged() { } ///////////////////////////////////////////////////////////////////// ////// [TBS] - app Dispatcher /// internal void InvalidateIsActiveForInput() { bool newIsActive = (_pic != null) ? (Enabled && _pic.Contains(this) && _pic.IsActiveForInput) : false; if (newIsActive != _activeForInput) { _activeForInput = newIsActive; OnIsActiveForInputChanged(); } } ///////////////////////////////////////////////////////////////////// ////// [TBS] - get - both Dispatchers /// public bool IsActiveForInput { get // both Dispatchers { return _activeForInput; } } ///////////////////////////////////////////////////////////////////// ////// [TBS] - on Dispatcher /// protected virtual void OnIsActiveForInputChanged() { } // Enabled state is local to this plugin so we just use volatile versus creating a lock // around it since we just read it from multiple thread and write from one. volatile bool __enabled = true; bool _activeForInput = false; StylusPlugInCollection _pic = null; } } // 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
- HwndKeyboardInputProvider.cs
- ObjectHandle.cs
- InputLangChangeRequestEvent.cs
- StructuredTypeEmitter.cs
- BridgeDataReader.cs
- LambdaSerializationException.cs
- ToolStripDesignerAvailabilityAttribute.cs
- CookieParameter.cs
- QueryAsyncResult.cs
- AmbientLight.cs
- IsolatedStoragePermission.cs
- HostProtectionException.cs
- ConnectionPoint.cs
- Binding.cs
- ScriptMethodAttribute.cs
- InfoCardAsymmetricCrypto.cs
- ContainerFilterService.cs
- SplitterPanel.cs
- SymmetricKeyWrap.cs
- _WinHttpWebProxyDataBuilder.cs
- OpacityConverter.cs
- MediaContext.cs
- CommandExpr.cs
- XmlNullResolver.cs
- MultiPropertyDescriptorGridEntry.cs
- VisualStyleInformation.cs
- ListMarkerSourceInfo.cs
- panel.cs
- TypeContext.cs
- DataGridViewAutoSizeModeEventArgs.cs
- ReadOnlyObservableCollection.cs
- ClipboardData.cs
- LongAverageAggregationOperator.cs
- EmissiveMaterial.cs
- ToolboxComponentsCreatedEventArgs.cs
- OptimalTextSource.cs
- ViewRendering.cs
- BuildManagerHost.cs
- BaseCodePageEncoding.cs
- RedirectionProxy.cs
- DataTableMappingCollection.cs
- ControlType.cs
- Random.cs
- Label.cs
- LocalBuilder.cs
- ContainerUtilities.cs
- ReliableChannelFactory.cs
- EncodingDataItem.cs
- WindowShowOrOpenTracker.cs
- MultiPartWriter.cs
- TouchDevice.cs
- TraceProvider.cs
- XPathExpr.cs
- HeaderedItemsControl.cs
- TerminateSequence.cs
- Pts.cs
- ToolStripContentPanelRenderEventArgs.cs
- ObservableDictionary.cs
- TextDecorationCollection.cs
- ArraySet.cs
- DataGridViewColumn.cs
- DirectoryNotFoundException.cs
- ControlParser.cs
- WorkItem.cs
- Misc.cs
- WorkerRequest.cs
- PropertyTab.cs
- XmlSchemaType.cs
- SlipBehavior.cs
- DurationConverter.cs
- BuilderElements.cs
- ValidatorCompatibilityHelper.cs
- RuleProcessor.cs
- ResourceReferenceExpressionConverter.cs
- DataTableCollection.cs
- TemplatedWizardStep.cs
- Cloud.cs
- MemberRelationshipService.cs
- ZoomPercentageConverter.cs
- TextElement.cs
- OracleLob.cs
- ToolStripStatusLabel.cs
- HttpRawResponse.cs
- SQLDecimalStorage.cs
- AnalyzedTree.cs
- DesignSurfaceManager.cs
- KnownBoxes.cs
- ServiceObjectContainer.cs
- RectConverter.cs
- LogReserveAndAppendState.cs
- SelectionProcessor.cs
- StyleCollection.cs
- DeviceContexts.cs
- _ConnectionGroup.cs
- SymLanguageVendor.cs
- StylusEventArgs.cs
- HttpCacheVary.cs
- MutexSecurity.cs
- SafeNativeMethods.cs
- GZipDecoder.cs