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// Copyright (c) 1995-2009 Nokia Corporation and/or its subsidiary(-ies).
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// All rights reserved.
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// This component and the accompanying materials are made available
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// under the terms of the License "Eclipse Public License v1.0"
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// which accompanies this distribution, and is available
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// at the URL "http://www.eclipse.org/legal/epl-v10.html".
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//
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// Initial Contributors:
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// Nokia Corporation - initial contribution.
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//
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// Contributors:
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//
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// Description:
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// e32\kernel\eventq.cpp
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//
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//
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#include <kernel/kern_priv.h>
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#include "execs.h"
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#include <e32btrace.h>
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/******************************************************
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* Event Queue
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******************************************************/
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/** Release the event queue mutex and panic the current thread with a KERN-EXEC panic.
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*/
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void EventQueuePanic(TInt aReason)
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{
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NKern::FMSignal(&K::EventQueueMutex);
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Kern::PanicCurrentThread(KLitKernExec, aReason);
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}
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void K::CreateEventQueue(TInt aSize)
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//
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// Create the event queue
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//
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{
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__KTRACE_OPT(KBOOT,Kern::Printf("CreateEventQueue"));
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K::EventBufferStart=(TRawEvent *)Kern::Alloc(sizeof(TRawEvent)*aSize);
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if (!K::EventBufferStart)
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K::Fault(K::ECreateEventQueueFailed);
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K::EventBufferEnd=K::EventBufferStart+aSize;
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K::EventHeadPtr=K::EventTailPtr=K::EventBufferStart;
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if (Kern::CreateClientDataRequest(K::EventRequest) != KErrNone)
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K::Fault(K::ECreateEventQueueFailed);
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}
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TInt ExecHandler::AddEvent(const TRawEvent &aEvent)
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//
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// Add an event to the queue.
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//
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{
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__KTRACE_OPT(KEVENT,Kern::Printf("Exec::AddEvent"));
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if(!Kern::CurrentThreadHasCapability(ECapabilitySwEvent,__PLATSEC_DIAGNOSTIC_STRING("Checked by UserSvr::AddEvent")))
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return KErrPermissionDenied;
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TRawEvent event;
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kumemget32(&event,&aEvent,sizeof(TRawEvent));
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TRawEvent::TType type = event.Type();
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if( (type==TRawEvent::ESwitchOff || type==TRawEvent::ECaseOpen || type==TRawEvent::ECaseClose || type==TRawEvent::ERestartSystem) &&
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!Kern::CurrentThreadHasCapability(ECapabilityPowerMgmt,__PLATSEC_DIAGNOSTIC_STRING("Checked by UserSvr::AddEvent")))
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return KErrPermissionDenied;
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#ifdef BTRACE_TRAWEVENT
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BTraceContext4(BTrace::ERawEvent, BTrace::EUserAddEvent ,(TUint32)type);
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#endif
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NKern::ThreadEnterCS();
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TInt r=Kern::AddEvent(event);
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NKern::ThreadLeaveCS();
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return r;
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}
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/** Adds an event to the event queue.
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Invoking this will reset the user inactivity timer.
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@param "const TRawEvent& aEvent" a reference to the event to be added to the event queue.
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@return KErrNone, if successful; KErrOverflow if event queue is already full.
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@pre No fast mutex can be held.
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@pre Calling thread must be in a critical section.
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@pre Kernel must be unlocked
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@pre interrupts enabled
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@pre Call in a thread context
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*/
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EXPORT_C TInt Kern::AddEvent(const TRawEvent& aEvent)
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{
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return Kern::AddEvent(aEvent, ETrue);
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}
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/** Adds an event to the event queue.
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@param "const TRawEvent& aEvent" a reference to the event to be added to the event queue.
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@param "TBool aResetUserActivity" Specifies whether this event should reset the user inactivity timer.
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For most cases this should be set to ETrue
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@return KErrNone, if successful; KErrOverflow if event queue is already full.
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@pre No fast mutex can be held.
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@pre Calling thread must be in a critical section.
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@pre Kernel must be unlocked
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@pre interrupts enabled
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@pre Call in a thread context
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*/
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EXPORT_C TInt Kern::AddEvent(const TRawEvent& aEvent, TBool aResetUserActivity)
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{
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CHECK_PRECONDITIONS(MASK_THREAD_CRITICAL,"Kern::AddEvent");
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__KTRACE_OPT(KEVENT,Kern::Printf("Kern::AddEvent %x, %x",K::EventHeadPtr,K::EventTailPtr));
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if (aResetUserActivity)
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{
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K::InactivityQ->Reset();
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if (K::PowerModel)
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K::PowerModel->RegisterUserActivity(aEvent);
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}
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#ifdef BTRACE_TRAWEVENT
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BTraceContext4(BTrace::ERawEvent, BTrace::EKernelAddEvent ,(TUint32)aEvent.Type());
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#endif
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NKern::FMWait(&K::EventQueueMutex);
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TInt r=KErrOverflow;
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TRawEvent *pE=K::EventHeadPtr+1;
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if (pE>=K::EventBufferEnd)
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pE=K::EventBufferStart;
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if (pE!=K::EventTailPtr)
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{
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*K::EventHeadPtr=aEvent;
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K::EventHeadPtr=pE;
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r=KErrNone;
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}
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K::TryDeliverEvent();
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return r;
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}
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void K::TryDeliverEvent()
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//
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// Deliver an event if one is pending.
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// Enter with event queue mutex held, leave with it released.
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//
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{
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if (K::EventHeadPtr!=K::EventTailPtr && K::EventRequest->IsReady())
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{
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K::EventRequest->Data() = *K::EventTailPtr;
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K::EventTailPtr++;
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if (K::EventTailPtr>=K::EventBufferEnd)
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K::EventTailPtr=K::EventBufferStart;
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Kern::QueueRequestComplete(K::EventThread,K::EventRequest,KErrNone);
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__KTRACE_OPT(KEVENT,Kern::Printf("Delivered event"));
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}
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NKern::FMSignal(&K::EventQueueMutex);
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}
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void ExecHandler::CaptureEventHook()
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//
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// Capture the event hook.
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// Enter and leave with system unlocked.
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//
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{
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__KTRACE_OPT(KEVENT,Kern::Printf("Exec::CaptureEventHook"));
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if(TheCurrentThread->iOwningProcess!=K::TheWindowServerProcess)
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{
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NKern::LockSystem();
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K::ProcessIsolationFailure(__PLATSEC_DIAGNOSTIC_STRING("Checked by UserSvr::CaptureEventHook"));
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}
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NKern::FMWait(&K::EventQueueMutex);
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if (!K::EventThread)
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K::EventThread=TheCurrentThread;
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else
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EventQueuePanic(EEventAlreadyCaptured);
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NKern::FMSignal(&K::EventQueueMutex);
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}
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void ExecHandler::ReleaseEventHook()
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//
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// Release the event hook.
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// Enter and leave with system unlocked.
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//
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{
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__KTRACE_OPT(KEVENT,Kern::Printf("Exec::ReleaseEventHook"));
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DThread* pT=TheCurrentThread;
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NKern::FMWait(&K::EventQueueMutex);
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if (K::EventThread==pT)
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{
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K::EventThread=NULL;
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Kern::QueueRequestComplete(K::EventThread,K::EventRequest,KErrCancel);
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}
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else
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EventQueuePanic(EEventNotCaptured);
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NKern::FMSignal(&K::EventQueueMutex);
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}
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void ExecHandler::RequestEvent(TRawEventBuf& aEvent, TRequestStatus& aStatus)
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//
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// Request the next event.
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// Enter and leave with system unlocked.
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//
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{
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__KTRACE_OPT(KEVENT,Kern::Printf("Exec::RequestEvent"));
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NKern::FMWait(&K::EventQueueMutex);
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if (K::EventThread!=TheCurrentThread)
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EventQueuePanic(EEventNotCaptured);
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if (K::EventRequest->SetStatus(&aStatus) != KErrNone)
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EventQueuePanic(EEventRequestPending);
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// This could be simpler if the API was changed to pass a pointer to a TRawEvent instead of a
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// TRawEventBuf descriptor. We cheat here and assume the descriptor is always a TRawEventBuf;
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// this should be safe since the API specifies a TRawEventBuf.
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K::EventRequest->SetDestPtr(((TUint8*)&aEvent) + sizeof(TDes8));
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K::TryDeliverEvent();
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}
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void ExecHandler::RequestEventCancel()
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//
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// Cancel the event request.
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// Enter and leave with system unlocked.
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//
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{
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__KTRACE_OPT(KEVENT,Kern::Printf("Exec::RequestEventCancel"));
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NKern::FMWait(&K::EventQueueMutex);
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if (K::EventThread!=TheCurrentThread)
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EventQueuePanic(EEventNotCaptured);
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Kern::QueueRequestComplete(K::EventThread,K::EventRequest,KErrCancel);
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NKern::FMSignal(&K::EventQueueMutex);
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}
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/** Gets the mouse or digitiser X-Y position.
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@return The position.
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@pre Call in any context.
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*/
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EXPORT_C TPoint TRawEvent::Pos() const
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{
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TPoint p;
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p.iX=iU.pos.x;
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p.iY=iU.pos.y;
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return p;
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}
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/** Gets the 3D pointing device Cartesian coordinates.
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@return The position.
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@pre Call in any context.
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*/
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EXPORT_C TPoint3D TRawEvent::Pos3D() const
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{
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TPoint3D p;
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p.iX=iU.pos.x;
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p.iY=iU.pos.y;
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p.iZ=iU.pos3D.z;
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return p;
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}
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/** Gets the angular spherical polar coordinates of the 3D pointer end that is closer to the screen.
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@return The angular spherical polar coordinates of the point defined by the end of the 3D pointing device that is closer to the screen.
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@pre Call in any context.
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*/
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EXPORT_C TAngle3D TRawEvent::Tilt() const
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{
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TAngle3D p;
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p.iPhi=iU.pos3D.phi;
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p.iTheta=iU.pos3D.theta;
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return p;
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}
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/** Gets the rotation angle of 3D pointing device.
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@return The rotation angle of the 3D pointing device.
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@pre Call in any context.
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*/
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EXPORT_C TInt TRawEvent::Rotation() const
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{
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return (iU.pos3D.alpha);
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}
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/** Sets the event up as a scancode event.
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@param aType The event type.
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@param aScanCode The scancode.
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@pre Call in any context.
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*/
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EXPORT_C void TRawEvent::Set(TType aType,TInt aScanCode)
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{
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iType=(TUint8)aType;
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iU.key.scanCode=aScanCode;
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iU.key.repeats=0;
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#ifdef BTRACE_TRAWEVENT
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BTraceContext8(BTrace::ERawEvent, BTrace::ESetEvent ,(TUint32)aType, (TUint32)aScanCode);
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#endif
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iTicks=Kern::TickCount();
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}
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/** Sets the event up as a repeating scancode event.
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@param aType The event type.
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@param aScanCode The scancode.
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@param aRepeats The repeat count.
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@pre Call in any context.
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*/
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EXPORT_C void TRawEvent::SetRepeat(TType aType,TInt aScanCode,TInt aRepeats)
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{
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iType=(TUint8)aType;
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iU.key.scanCode=aScanCode;
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iU.key.repeats=aRepeats;
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#ifdef BTRACE_TRAWEVENT
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BTraceContext12(BTrace::ERawEvent, BTrace::ESetEvent ,(TUint32)aType, (TUint32)aScanCode, (TUint32)aRepeats);
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#endif
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iTicks=Kern::TickCount();
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}
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/** Sets the event up as a mouse/pen event.
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@param aType The event type.
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@param aX The X position.
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@param aY The Y position.
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@pre Call in any context.
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*/
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EXPORT_C void TRawEvent::Set(TType aType,TInt aX,TInt aY)
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{
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iType=(TUint8)aType;
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iU.pos.x=aX;
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iU.pos.y=aY;
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#ifdef BTRACE_TRAWEVENT
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BTraceContext12(BTrace::ERawEvent, BTrace::ESetEvent ,(TUint32)aType, (TUint32)aX,(TUint32)aY);
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#endif
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iTicks=Kern::TickCount();
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}
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/** Sets the event up as a 3D pointer linear move event.
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@param aType The event type.
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@param aX The X position.
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@param aY The Y position.
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@param aZ The Z position (defaults to 0 on 2D detection devices).
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@pre Call in any context.
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*/
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EXPORT_C void TRawEvent::Set(TType aType,TInt aX,TInt aY,TInt aZ)
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{
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iType=(TUint8)aType;
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iU.pos.x=aX;
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iU.pos.y=aY;
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iU.pos3D.z=aZ;
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#ifdef BTRACE_TRAWEVENT
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//Form the Trace Data
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TUint32 traceData[2];
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traceData[0] =aY;
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traceData[1] =aZ;
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BTraceContextN(BTrace::ERawEvent, BTrace::ESetEvent ,(TUint32)aType, (TUint32)aX,traceData, sizeof(traceData));
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#endif
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iTicks=Kern::TickCount();
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}
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/** Sets up an event without parameters.
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@param aType The event type.
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@pre Call in any context.
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*/
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EXPORT_C void TRawEvent::Set(TType aType)
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{
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iType=(TUint8)aType;
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#ifdef BTRACE_TRAWEVENT
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BTraceContext4(BTrace::ERawEvent, BTrace::ESetEvent ,(TUint32)aType);
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#endif
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iTicks=Kern::TickCount();
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}
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/** Sets the event up as a 3D pointer linear move and tilt and rotation change event.
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@param aType The event type.
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@param aX The X position (or TPhi polar coordinate).
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@param aY The Y position (or Theta polar coordinate).
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@param aZ The Z position (or rotation).
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@param aPhi The Phi polar coordinate.
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@param aTheta The Theta polar coordinate.
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@param aAlpha The rotation angle.
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@pre Call in any context.
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*/
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EXPORT_C void TRawEvent::Set(TType aType,TInt aX,TInt aY,TInt aZ,TInt aPhi,TInt aTheta,TInt aAlpha)
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{
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iType=(TUint8)aType;
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iU.pos.x=aX;
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iU.pos.y=aY;
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iU.pos3D.z=aZ;
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iU.pos3D.phi=aPhi;
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iU.pos3D.theta=aTheta;
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iU.pos3D.alpha=aAlpha;
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#ifdef BTRACE_TRAWEVENT
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//Form the Trace Data
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TUint32 traceData[5];
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traceData[0] =aY;
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traceData[1] =aZ;
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traceData[2] =aPhi;
|
|
408 |
traceData[3] =aTheta;
|
|
409 |
traceData[4] =aAlpha;
|
|
410 |
BTraceContextN(BTrace::ERawEvent, BTrace::ESetEvent ,(TUint32)aType, (TUint32)aX,traceData, sizeof(traceData));
|
|
411 |
#endif
|
|
412 |
iTicks=Kern::TickCount();
|
|
413 |
}
|
|
414 |
|
|
415 |
/** Sets the event up as 3D pointer tilt change event.
|
|
416 |
|
|
417 |
@param aType The event type.
|
|
418 |
@param aPhi The Phi coordinate.
|
|
419 |
@param aTheta The Theta coordinate.
|
|
420 |
|
|
421 |
@pre Call in any context.
|
|
422 |
*/
|
|
423 |
EXPORT_C void TRawEvent::SetTilt(TType aType,TInt aPhi,TInt aTheta)
|
|
424 |
{
|
|
425 |
iType=(TUint8)aType;
|
|
426 |
iU.pos3D.phi=aPhi;
|
|
427 |
iU.pos3D.theta=aTheta;
|
|
428 |
#ifdef BTRACE_TRAWEVENT
|
|
429 |
BTraceContext12(BTrace::ERawEvent, BTrace::ESetTiltEvent ,(TUint32)aType, (TUint32)aPhi,(TUint32)aTheta);
|
|
430 |
#endif
|
|
431 |
iTicks=Kern::TickCount();
|
|
432 |
}
|
|
433 |
|
|
434 |
/** Sets the event up as 3D pointer rotation event.
|
|
435 |
|
|
436 |
@param aType The event type.
|
|
437 |
@param aAlpha The rotation angle.
|
|
438 |
|
|
439 |
@pre Call in any context.
|
|
440 |
*/
|
|
441 |
EXPORT_C void TRawEvent::SetRotation(TType aType,TInt aAlpha)
|
|
442 |
{
|
|
443 |
iType=(TUint8)aType;
|
|
444 |
iU.pos3D.alpha=aAlpha;
|
|
445 |
#ifdef BTRACE_TRAWEVENT
|
|
446 |
BTraceContext8(BTrace::ERawEvent, BTrace::ESetRotationtEvent,(TUint32)aType, (TUint32)aAlpha);
|
|
447 |
#endif
|
|
448 |
iTicks=Kern::TickCount();
|
|
449 |
}
|
|
450 |
|
|
451 |
|
|
452 |
|
|
453 |
/** Returns the scancode.
|
|
454 |
|
|
455 |
@return The scancode.
|
|
456 |
|
|
457 |
@pre Call in any context.
|
|
458 |
*/
|
|
459 |
EXPORT_C TInt TRawEvent::ScanCode() const
|
|
460 |
{
|
|
461 |
return iU.key.scanCode;
|
|
462 |
}
|
|
463 |
|
|
464 |
|
|
465 |
/** Returns the repeat count.
|
|
466 |
|
|
467 |
@return The repeat count.
|
|
468 |
|
|
469 |
@pre Call in any context.
|
|
470 |
*/
|
|
471 |
EXPORT_C TInt TRawEvent::Repeats() const
|
|
472 |
{
|
|
473 |
return iU.key.repeats;
|
|
474 |
}
|
|
475 |
|
|
476 |
|
|
477 |
/** Sets the event up as a 3D pointer linear move event with pointer number
|
|
478 |
@param aType The event type.
|
|
479 |
@param aX The X position.
|
|
480 |
@param aY The Y position.
|
|
481 |
@param aZ The Z position .
|
|
482 |
@param aPointerNumber The pointer number for the event
|
|
483 |
|
|
484 |
@pre Call in any context.
|
|
485 |
|
|
486 |
*/
|
|
487 |
|
|
488 |
EXPORT_C void TRawEvent::Set (TType aType, TInt aX, TInt aY, TInt aZ, TUint8 aPointerNumber)
|
|
489 |
{
|
|
490 |
|
|
491 |
iType=(TUint8)aType;
|
|
492 |
iU.pos3D.x=aX;
|
|
493 |
iU.pos3D.y=aY;
|
|
494 |
iU.pos3D.z=aZ;
|
|
495 |
iPointerNumber=aPointerNumber;
|
|
496 |
#ifdef BTRACE_TRAWEVENT
|
|
497 |
//Form the Trace Data
|
|
498 |
TUint32 traceData[3];
|
|
499 |
traceData[0] =aY;
|
|
500 |
traceData[1] =aZ;
|
|
501 |
traceData[2] =aPointerNumber;
|
|
502 |
BTraceContextN(BTrace::ERawEvent, BTrace::ESetEvent ,(TUint32)aType, (TUint32)aX,traceData, sizeof(traceData));
|
|
503 |
#endif
|
|
504 |
iTicks=Kern::TickCount();
|
|
505 |
}
|