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
- MarkedHighlightComponent.cs
- DispatchWrapper.cs
- TextHidden.cs
- MetadataCache.cs
- XmlTypeAttribute.cs
- PageParser.cs
- DataGridColumnStyleMappingNameEditor.cs
- DBBindings.cs
- TableLayoutPanelCellPosition.cs
- ProfilePropertyNameValidator.cs
- ZipIOEndOfCentralDirectoryBlock.cs
- CollectionChangedEventManager.cs
- MembershipPasswordException.cs
- _SecureChannel.cs
- remotingproxy.cs
- Authorization.cs
- NTAccount.cs
- TreeNodeMouseHoverEvent.cs
- ActiveXContainer.cs
- HttpClientCertificate.cs
- SQLDouble.cs
- Pair.cs
- EntityDataSourceContextDisposingEventArgs.cs
- HWStack.cs
- ProcessInfo.cs
- DataChangedEventManager.cs
- MultilineStringConverter.cs
- EncryptedXml.cs
- TargetParameterCountException.cs
- Throw.cs
- X509ServiceCertificateAuthenticationElement.cs
- SrgsGrammarCompiler.cs
- RowCache.cs
- NTAccount.cs
- BaseValidatorDesigner.cs
- precedingquery.cs
- DataGridViewColumn.cs
- DesignerWebPartChrome.cs
- hebrewshape.cs
- DataGridViewLinkCell.cs
- DateTimeFormatInfoScanner.cs
- DebuggerAttributes.cs
- RadioButtonBaseAdapter.cs
- EventSinkActivity.cs
- FormattedTextSymbols.cs
- TransformerInfo.cs
- EventLogTraceListener.cs
- FilterQueryOptionExpression.cs
- SafeEventLogWriteHandle.cs
- XmlEntity.cs
- ConstraintConverter.cs
- FixedStringLookup.cs
- ReadOnlyAttribute.cs
- ClientUrlResolverWrapper.cs
- Registry.cs
- PerformanceCountersElement.cs
- HandleCollector.cs
- DependencyPropertyHelper.cs
- DES.cs
- SqlFlattener.cs
- MobileControlPersister.cs
- DBNull.cs
- OleDbMetaDataFactory.cs
- DataServiceQueryContinuation.cs
- EventData.cs
- FtpWebResponse.cs
- XmlAttributes.cs
- FixedSOMPageConstructor.cs
- XmlExtensionFunction.cs
- SqlError.cs
- CommandHelpers.cs
- PictureBox.cs
- PolygonHotSpot.cs
- BitmapImage.cs
- Deflater.cs
- DataGridPageChangedEventArgs.cs
- LostFocusEventManager.cs
- Crc32Helper.cs
- DesignerGenericWebPart.cs
- LiteralControl.cs
- BaseTransportHeaders.cs
- SafeMILHandle.cs
- WebCategoryAttribute.cs
- CodeNamespaceImport.cs
- MultiPropertyDescriptorGridEntry.cs
- InvalidPrinterException.cs
- ActivityMarkupSerializationProvider.cs
- LineUtil.cs
- xmlformatgeneratorstatics.cs
- FormsAuthenticationUser.cs
- SingleConverter.cs
- WindowsTab.cs
- Brush.cs
- FastPropertyAccessor.cs
- TransportBindingElement.cs
- CryptoKeySecurity.cs
- ChannelServices.cs
- XamlTypeMapper.cs
- EntityReference.cs
- IdentityNotMappedException.cs