internal HwndStylusInputProvider(HwndSource source)
{
InputManager inputManager = InputManager.Current;
StylusLogic stylusLogic = inputManager.StylusLogic;
IntPtr sourceHandle;
(new UIPermission(PermissionState.Unrestricted)).Assert();
try //Blessed Assert this is for RegisterInputManager and RegisterHwndforinput
{
// Register ourselves as an input provider with the input manager.
_site = new SecurityCriticalDataClass <InputProviderSite>(inputManager.RegisterInputProvider(this));
sourceHandle = source.Handle;
}
finally
{
UIPermission.RevertAssert();
}
stylusLogic.RegisterHwndForInput(inputManager, source);
_source = new SecurityCriticalDataClass <HwndSource>(source);
_stylusLogic = new SecurityCriticalDataClass <StylusLogic>(stylusLogic);
// Enables multi-touch input
UnsafeNativeMethods.SetProp(new HandleRef(this, sourceHandle), "MicrosoftTabletPenServiceProperty", new HandleRef(null, new IntPtr(MultiTouchEnabledFlag)));
}
internal PointerStylusDevice(PointerTabletDevice tabletDevice, UnsafeNativeMethods.POINTER_DEVICE_CURSOR_INFO cursorInfo)
{
_cursorInfo = cursorInfo;
_tabletDevice = tabletDevice;
_pointerLogic = StylusLogic.GetCurrentStylusLogicAs <PointerLogic>();
// Touch devices have a special set of handling code
if (tabletDevice.Type == TabletDeviceType.Touch)
{
TouchDevice = new PointerTouchDevice(this);
}
_interactionEngine = new PointerInteractionEngine(this);
_interactionEngine.InteractionDetected += HandleInteraction;
List <StylusButton> buttons = new List <StylusButton>();
// Create a button collection for this StylusDevice based off the button properties stored in the tablet
// This needs to be done as each button instance has a StylusDevice owner that it uses to access the raw
// data in the StylusDevice.
foreach (var prop in _tabletDevice.DeviceInfo.StylusPointProperties)
{
if (prop.IsButton)
{
StylusButton button = new StylusButton(StylusPointPropertyIds.GetStringRepresentation(prop.Id), prop.Id);
button.SetOwner(this);
buttons.Add(button);
}
}
_stylusButtons = new StylusButtonCollection(buttons);
}
internal override void UpdateState(UIElement element)
{
bool unhookPenContexts = true;
// Disable processing of the queue during blocking operations to prevent unrelated reentrancy
// which a call to Lock() can cause.
using (element.Dispatcher.DisableProcessing())
{
// See if we should be enabled
if (element.IsVisible && element.IsEnabled && element.IsHitTestVisible)
{
PresentationSource presentationSource = PresentationSource.CriticalFromVisual(element as Visual);
if (presentationSource != null)
{
unhookPenContexts = false;
// Are we currently hooked up? If not then hook up.
if (_penContexts == null)
{
InputManager inputManager = (InputManager)element.Dispatcher.InputManager;
PenContexts penContexts = StylusLogic.GetCurrentStylusLogicAs <WispLogic>().GetPenContextsFromHwnd(presentationSource);
// _penContexts must be non null or don't do anything.
if (penContexts != null)
{
_penContexts = penContexts;
lock (penContexts.SyncRoot)
{
penContexts.AddStylusPlugInCollection(Wrapper);
foreach (StylusPlugIn spi in Wrapper)
{
spi.InvalidateIsActiveForInput(); // Uses _penContexts being set to determine active state.
}
// NTRAID:WINDOWSOS#1677277-2006/06/05-WAYNEZEN,
// Normally the Rect will be updated when we receive the LayoutUpdate.
// However there could be a race condition which the LayoutUpdate gets received
// before the properties like IsVisible being set.
// So we should always force to call OnLayoutUpdated whenever the input is active.
Wrapper.OnLayoutUpdated(this.Wrapper, EventArgs.Empty);
}
}
}
}
}
if (unhookPenContexts)
{
Unhook();
}
}
}
/// <summary>
/// Creates a new input provider for a particular source that handles WM_POINTER messages
/// </summary>
/// <param name="source">The source to handle messages for</param>
internal HwndPointerInputProvider(HwndSource source)
{
_site = new SecurityCriticalDataClass <InputProviderSite>(InputManager.Current.RegisterInputProvider(this));
_source = new SecurityCriticalDataClass <HwndSource>(source);
_pointerLogic = new SecurityCriticalDataClass <PointerLogic>(StylusLogic.GetCurrentStylusLogicAs <PointerLogic>());
// Register the stylus plugin manager
_pointerLogic.Value.PlugInManagers[_source.Value] = new PointerStylusPlugInManager(_source.Value);
// Store if this window is enabled or disabled
int style = MS.Win32.UnsafeNativeMethods.GetWindowLong(new HandleRef(this, source.CriticalHandle), MS.Win32.NativeMethods.GWL_STYLE);
IsWindowEnabled = (style & MS.Win32.NativeMethods.WS_DISABLED) == 0;
}
internal override void UpdateState(UIElement element)
{
bool unhook = true;
// See if we should be enabled
if (element.IsVisible && element.IsEnabled && element.IsHitTestVisible)
{
PresentationSource presentationSource = PresentationSource.CriticalFromVisual(element as Visual);
if (presentationSource != null)
{
unhook = false;
// Are we currently hooked up? If not then hook up.
if (_manager == null)
{
_manager = StylusLogic.GetCurrentStylusLogicAs <PointerLogic>().PlugInManagers[presentationSource];
// _manager must be non null or don't do anything.
if (_manager != null)
{
_manager.AddStylusPlugInCollection(Wrapper);
foreach (StylusPlugIn spi in Wrapper)
{
spi.InvalidateIsActiveForInput();
}
//
// Normally the Rect will be updated when we receive the LayoutUpdate.
// However there could be a race condition which the LayoutUpdate gets received
// before the properties like IsVisible being set.
// So we should always force to call OnLayoutUpdated whenever the input is active.
Wrapper.OnLayoutUpdated(this.Wrapper, EventArgs.Empty);
}
}
}
}
if (unhook)
{
Unhook();
}
}
/////////////////////////////////////////////////////////////////////
internal HwndStylusInputProvider(HwndSource source)
{
InputManager inputManager = InputManager.Current;
_stylusLogic = new SecurityCriticalDataClass <WispLogic>(StylusLogic.GetCurrentStylusLogicAs <WispLogic>());
IntPtr sourceHandle;
// Register ourselves as an input provider with the input manager.
_site = new SecurityCriticalDataClass <InputProviderSite>(inputManager.RegisterInputProvider(this));
sourceHandle = source.Handle;
_stylusLogic.Value.RegisterHwndForInput(inputManager, source);
_source = new SecurityCriticalDataClass <HwndSource>(source);
// Enables multi-touch input
UnsafeNativeMethods.SetProp(new HandleRef(this, sourceHandle), "MicrosoftTabletPenServiceProperty", new HandleRef(null, new IntPtr(MultiTouchEnabledFlag)));
}
internal void SynchronizeReverseInheritPropertyFlags(DependencyObject oldParent, bool isCoreParent)
{
if (IsKeyboardFocusWithin)
{
Keyboard.PrimaryDevice.ReevaluateFocusAsync(this, oldParent, isCoreParent);
}
// Reevelauate the stylus properties first to guarentee that our property change
// notifications fire before mouse properties.
if (IsStylusOver)
{
StylusLogic.CurrentStylusLogicReevaluateStylusOver(this, oldParent, isCoreParent);
}
if (IsStylusCaptureWithin)
{
StylusLogic.CurrentStylusLogicReevaluateCapture(this, oldParent, isCoreParent);
}
if (IsMouseOver)
{
Mouse.PrimaryDevice.ReevaluateMouseOver(this, oldParent, isCoreParent);
}
if (IsMouseCaptureWithin)
{
Mouse.PrimaryDevice.ReevaluateCapture(this, oldParent, isCoreParent);
}
if (AreAnyTouchesOver)
{
TouchDevice.ReevaluateDirectlyOver(this, oldParent, isCoreParent);
}
if (AreAnyTouchesCapturedWithin)
{
TouchDevice.ReevaluateCapturedWithin(this, oldParent, isCoreParent);
}
}
internal WispTabletDeviceCollection()
{
WispLogic stylusLogic = StylusLogic.GetCurrentStylusLogicAs <WispLogic>();
bool enabled = stylusLogic.Enabled;
if (!enabled)
{
enabled = ShouldEnableTablets();
}
// If enabled or we are a tabletpc (vista sets dynamically if digitizers present) then enable the pen!
if (enabled)
{
UpdateTablets(); // Create the tablet device collection!
// Enable stylus input on all hwnds if we have not yet done so.
if (!stylusLogic.Enabled)
{
stylusLogic.EnableCore();
}
}
}
internal IntPtr FilterMessage(IntPtr hwnd, WindowMessage msg, IntPtr wParam, IntPtr lParam, ref bool handled)
{
IntPtr result = IntPtr.Zero;
// It is possible to be re-entered during disposal. Just return.
if (null == _source || null == _source.Value)
{
return(result);
}
switch (msg)
{
case WindowMessage.WM_ENABLE:
_stylusLogic.Value.OnWindowEnableChanged(hwnd, (int)NativeMethods.IntPtrToInt32(wParam) == 0);
break;
case WindowMessage.WM_TABLET_QUERYSYSTEMGESTURESTATUS:
handled = true;
NativeMethods.POINT pt1 = new NativeMethods.POINT(
NativeMethods.SignedLOWORD(lParam),
NativeMethods.SignedHIWORD(lParam));
SafeNativeMethods.ScreenToClient(new HandleRef(this, hwnd), pt1);
Point ptClient1 = new Point(pt1.x, pt1.y);
IInputElement inputElement = StylusDevice.LocalHitTest(_source.Value, ptClient1);
if (inputElement != null)
{
// walk up the parent chain
DependencyObject elementCur = (DependencyObject)inputElement;
bool isPressAndHoldEnabled = Stylus.GetIsPressAndHoldEnabled(elementCur);
bool isFlicksEnabled = Stylus.GetIsFlicksEnabled(elementCur);
bool isTapFeedbackEnabled = Stylus.GetIsTapFeedbackEnabled(elementCur);
bool isTouchFeedbackEnabled = Stylus.GetIsTouchFeedbackEnabled(elementCur);
uint flags = 0;
if (!isPressAndHoldEnabled)
{
flags |= TABLET_PRESSANDHOLD_DISABLED;
}
if (!isTapFeedbackEnabled)
{
flags |= TABLET_TAPFEEDBACK_DISABLED;
}
if (isTouchFeedbackEnabled)
{
flags |= TABLET_TOUCHUI_FORCEON;
}
else
{
flags |= TABLET_TOUCHUI_FORCEOFF;
}
if (!isFlicksEnabled)
{
flags |= TABLET_FLICKS_DISABLED;
}
result = new IntPtr(flags);
}
break;
case WindowMessage.WM_TABLET_FLICK:
handled = true;
int flickData = NativeMethods.IntPtrToInt32(wParam);
// We always handle any scroll actions if we are enabled. We do this when we see the SystemGesture Flick come through.
// Note: Scrolling happens on window flicked on even if it is not the active window.
if (_stylusLogic != null && _stylusLogic.Value.Enabled && (StylusLogic.GetFlickAction(flickData) == 1))
{
result = new IntPtr(0x0001); // tell UIHub the flick has already been handled.
}
break;
}
if (handled && EventTrace.IsEnabled(EventTrace.Keyword.KeywordInput | EventTrace.Keyword.KeywordPerf, EventTrace.Level.Info))
{
EventTrace.EventProvider.TraceEvent(EventTrace.Event.WClientInputMessage, EventTrace.Keyword.KeywordInput | EventTrace.Keyword.KeywordPerf, EventTrace.Level.Info,
(_source.Value.CompositionTarget != null ? _source.Value.CompositionTarget.Dispatcher.GetHashCode() : 0),
hwnd.ToInt64(),
msg,
(int)wParam,
(int)lParam);
}
return(result);
}
internal WispStylusTouchDevice(StylusDeviceBase stylusDevice)
: base(stylusDevice)
{
_stylusLogic = StylusLogic.GetCurrentStylusLogicAs <WispLogic>();
PromotingToOther = true;
}
/// <summary>
/// Used in order to allow StylusPlugins to affect mouse inputs as well as touch.
/// </summary>
internal static void InvokePlugInsForMouse(ProcessInputEventArgs e)
{
if (!e.StagingItem.Input.Handled)
{
// if we see a preview mouse event that is not generated by a stylus
// then send on to plugin
if ((e.StagingItem.Input.RoutedEvent != Mouse.PreviewMouseDownEvent) &&
(e.StagingItem.Input.RoutedEvent != Mouse.PreviewMouseUpEvent) &&
(e.StagingItem.Input.RoutedEvent != Mouse.PreviewMouseMoveEvent) &&
(e.StagingItem.Input.RoutedEvent != InputManager.InputReportEvent))
{
return;
}
// record the mouse capture for later reference..
MouseDevice mouseDevice;
PresentationSource source;
bool leftButtonDown;
bool rightButtonDown;
RawStylusActions stylusActions = RawStylusActions.None;
int timestamp;
// See if we need to deal sending a leave due to this PresentationSource being Deactivated
// If not then we just return and do nothing.
if (e.StagingItem.Input.RoutedEvent == InputManager.InputReportEvent)
{
if (_activeMousePlugInCollection?.Element == null)
{
return;
}
InputReportEventArgs input = e.StagingItem.Input as InputReportEventArgs;
if (input.Report.Type != InputType.Mouse)
{
return;
}
RawMouseInputReport mouseInputReport = (RawMouseInputReport)input.Report;
if ((mouseInputReport.Actions & RawMouseActions.Deactivate) != RawMouseActions.Deactivate)
{
return;
}
mouseDevice = InputManager.UnsecureCurrent.PrimaryMouseDevice;
// Mouse set directly over to null when truly deactivating.
if (mouseDevice == null || mouseDevice.DirectlyOver != null)
{
return;
}
leftButtonDown = mouseDevice.LeftButton == MouseButtonState.Pressed;
rightButtonDown = mouseDevice.RightButton == MouseButtonState.Pressed;
timestamp = mouseInputReport.Timestamp;
// Get presentationsource from element.
source = PresentationSource.CriticalFromVisual(_activeMousePlugInCollection.Element as Visual);
}
else
{
MouseEventArgs mouseEventArgs = e.StagingItem.Input as MouseEventArgs;
mouseDevice = mouseEventArgs.MouseDevice;
leftButtonDown = mouseDevice.LeftButton == MouseButtonState.Pressed;
rightButtonDown = mouseDevice.RightButton == MouseButtonState.Pressed;
// Only look at mouse input reports that truly come from a mouse (and is not an up or deactivate) and it
// must be pressed state if a move (we don't fire stylus inair moves currently)
if (mouseEventArgs.StylusDevice != null &&
e.StagingItem.Input.RoutedEvent != Mouse.PreviewMouseUpEvent)
{
return;
}
if (e.StagingItem.Input.RoutedEvent == Mouse.PreviewMouseMoveEvent)
{
if (!leftButtonDown)
{
return;
}
stylusActions = RawStylusActions.Move;
}
if (e.StagingItem.Input.RoutedEvent == Mouse.PreviewMouseDownEvent)
{
MouseButtonEventArgs mouseButtonEventArgs = mouseEventArgs as MouseButtonEventArgs;
if (mouseButtonEventArgs.ChangedButton != MouseButton.Left)
{
return;
}
stylusActions = RawStylusActions.Down;
}
if (e.StagingItem.Input.RoutedEvent == Mouse.PreviewMouseUpEvent)
{
MouseButtonEventArgs mouseButtonEventArgs = mouseEventArgs as MouseButtonEventArgs;
if (mouseButtonEventArgs.ChangedButton != MouseButton.Left)
{
return;
}
stylusActions = RawStylusActions.Up;
}
timestamp = mouseEventArgs.Timestamp;
Visual directlyOverVisual = mouseDevice.DirectlyOver as Visual;
if (directlyOverVisual == null)
{
return;
}
//
// Take the presentation source which is associated to the directly over element.
source = PresentationSource.CriticalFromVisual(directlyOverVisual);
}
if ((source != null) &&
(source.CompositionTarget != null) &&
!source.CompositionTarget.IsDisposed)
{
IInputElement directlyOver = mouseDevice.DirectlyOver;
int packetStatus = (leftButtonDown ? 1 : 0) | (rightButtonDown ? 9 : 0); // pen tip down == 1, barrel = 8
Point ptClient = mouseDevice.GetPosition(source.RootVisual as IInputElement);
ptClient = source.CompositionTarget.TransformToDevice.Transform(ptClient);
int buttons = (leftButtonDown ? 1 : 0) | (rightButtonDown ? 3 : 0);
int[] data = { (int)ptClient.X, (int)ptClient.Y, packetStatus, buttons };
RawStylusInputReport inputReport = new RawStylusInputReport(
InputMode.Foreground,
timestamp,
source,
stylusActions,
() => { return(MousePointDescription); },
0, 0,
data);
PointerStylusPlugInManager manager =
StylusLogic.GetCurrentStylusLogicAs <PointerLogic>()?.GetManagerForSource(source);
// Avoid re-entrancy due to lock() being used.
using (Dispatcher.CurrentDispatcher.DisableProcessing())
{
// Call plugins (does enter/leave and FireCustomData as well)
_activeMousePlugInCollection = manager?.InvokeStylusPluginCollectionForMouse(inputReport, directlyOver, _activeMousePlugInCollection);
}
}
}
}
/// <summary>
/// Verifies that the call to the stylus plugin on the RTI thread was valid against the current visual tree.
/// If this verification fails, we will rebuild and resend the raw input and custom data in order to inform
/// the target collections of the error and fix it.
/// </summary>
/// <remarks>
/// This is a remnant of verifying hits to the collections based on the UI thread calling this
/// after the real time input thread has previously called a collection. This is due to the RTI thread
/// not being 100% synchronous with the visual tree in terms of hitting the collections. This is sort of
/// redundant right now, but needs to be here when we re-implement the RTI.
/// </remarks>
internal void VerifyStylusPlugInCollectionTarget(RawStylusInputReport rawStylusInputReport)
{
switch (rawStylusInputReport.Actions)
{
case RawStylusActions.Down:
case RawStylusActions.Move:
case RawStylusActions.Up:
break;
default:
return; // do nothing if not Down, Move or Up.
}
PointerLogic pointerLogic = StylusLogic.GetCurrentStylusLogicAs <PointerLogic>();
RawStylusInput originalRSI = rawStylusInputReport.RawStylusInput;
// See if we have a plugin for the target of this input.
StylusPlugInCollection targetPIC = null;
StylusPlugInCollection targetRtiPIC = (originalRSI != null) ? originalRSI.Target : null;
bool updateEventPoints = false;
// Make sure we use UIElement for target if non NULL and hit ContentElement.
UIElement newTarget = InputElement.GetContainingUIElement(rawStylusInputReport.StylusDevice.DirectlyOver as DependencyObject) as UIElement;
if (newTarget != null)
{
targetPIC = FindPlugInCollection(newTarget);
}
// Make sure any lock() calls do not reenter on us.
using (Dispatcher.CurrentDispatcher.DisableProcessing())
{
// See if we hit the wrong PlugInCollection on the pen thread and clean things up if we did.
if (targetRtiPIC != null && targetRtiPIC != targetPIC && originalRSI != null)
{
// Fire custom data not confirmed events for both pre and post since bad target...
foreach (RawStylusInputCustomData customData in originalRSI.CustomDataList)
{
customData.Owner.FireCustomData(customData.Data, rawStylusInputReport.Actions, false);
}
updateEventPoints = originalRSI.StylusPointsModified;
// Clear RawStylusInput data.
rawStylusInputReport.RawStylusInput = null;
}
// See if we need to build up an RSI to send to the plugincollection (due to a mistarget).
bool sendRawStylusInput = false;
if (targetPIC != null && rawStylusInputReport.RawStylusInput == null)
{
// NOTE: (This applies when RTI is back in) Info will not change (it gets rebuilt instead so keeping ref is fine)
// The transformTabletToView matrix and plugincollection rects though can change based
// off of layout events which is why we need to lock this.
GeneralTransformGroup transformTabletToView = new GeneralTransformGroup();
transformTabletToView.Children.Add(rawStylusInputReport.StylusDevice.As <PointerStylusDevice>().GetTabletToElementTransform(null)); // this gives matrix in measured units (not device)
transformTabletToView.Children.Add(targetPIC.ViewToElement); // Make it relative to the element.
transformTabletToView.Freeze(); // Must be frozen for multi-threaded access.
RawStylusInput rawStylusInput = new RawStylusInput(rawStylusInputReport, transformTabletToView, targetPIC);
rawStylusInputReport.RawStylusInput = rawStylusInput;
sendRawStylusInput = true;
}
PointerStylusDevice stylusDevice = rawStylusInputReport.StylusDevice.As <PointerStylusDevice>();
// Now fire the confirmed enter/leave events as necessary.
StylusPlugInCollection currentTarget = stylusDevice.CurrentVerifiedTarget;
if (targetPIC != currentTarget)
{
if (currentTarget != null)
{
// Fire leave event. If we never had a plugin for this event then create a temp one.
if (originalRSI == null)
{
GeneralTransformGroup transformTabletToView = new GeneralTransformGroup();
transformTabletToView.Children.Add(stylusDevice.GetTabletToElementTransform(null)); // this gives matrix in measured units (not device)
transformTabletToView.Children.Add(currentTarget.ViewToElement); // Make it relative to the element.
transformTabletToView.Freeze(); // Must be frozen for multi-threaded access.
originalRSI = new RawStylusInput(rawStylusInputReport, transformTabletToView, currentTarget);
}
currentTarget.FireEnterLeave(false, originalRSI, true);
}
if (targetPIC != null)
{
// Fire Enter event
targetPIC.FireEnterLeave(true, rawStylusInputReport.RawStylusInput, true);
// Indicate we've used a stylus plugin
pointerLogic.Statistics.FeaturesUsed |= Tracing.StylusTraceLogger.FeatureFlags.StylusPluginsUsed;
}
// Update the verified target.
stylusDevice.CurrentVerifiedTarget = targetPIC;
}
// Now fire RawStylusInput if needed to the right plugincollection.
if (sendRawStylusInput)
{
// We are on the pen thread, just call directly.
targetPIC.FireRawStylusInput(rawStylusInputReport.RawStylusInput);
updateEventPoints = (updateEventPoints || rawStylusInputReport.RawStylusInput.StylusPointsModified);
// Indicate we've used a stylus plugin
pointerLogic.Statistics.FeaturesUsed |= Tracing.StylusTraceLogger.FeatureFlags.StylusPluginsUsed;
}
// Now fire PrePreviewCustomData events.
if (targetPIC != null)
{
// Send custom data pre event
foreach (RawStylusInputCustomData customData in rawStylusInputReport.RawStylusInput.CustomDataList)
{
customData.Owner.FireCustomData(customData.Data, rawStylusInputReport.Actions, true);
}
}
// VerifyRawTarget might resend to correct plugins or may have hit the wrong plugincollection. The StylusPackets
// may be overriden in those plugins so we need to call UpdateEventStylusPoints to update things.
if (updateEventPoints)
{
rawStylusInputReport.StylusDevice.As <PointerStylusDevice>().UpdateEventStylusPoints(rawStylusInputReport, true);
}
}
}
