sl@0: // Copyright (c) 2008-2010 Nokia Corporation and/or its subsidiary(-ies).
sl@0: // All rights reserved.
sl@0: // This component and the accompanying materials are made available
sl@0: // under the terms of "Eclipse Public License v1.0"
sl@0: // which accompanies this distribution, and is available
sl@0: // at the URL "http://www.eclipse.org/legal/epl-v10.html".
sl@0: //
sl@0: // Initial Contributors:
sl@0: // Nokia Corporation - initial contribution.
sl@0: //
sl@0: // Contributors:
sl@0: //
sl@0: // Description:
sl@0: //
sl@0: 
sl@0: /**
sl@0:  @file
sl@0: */
sl@0: 
sl@0: #include "wsdisplaychangeao.h"
sl@0: #include "ScrDev.H"
sl@0: #include "server.h"
sl@0: 
sl@0: CWsDisplayChangeNotifier::CWsDisplayChangeNotifier(MWsDisplayControl* aNextLevelInterface, CScreen *aOwner)
sl@0: :CActive(EEventPriority), iNextLevelInterface(aNextLevelInterface), iOwner(aOwner)
sl@0: 	{
sl@0: 	CActiveScheduler::Add(this);
sl@0: 	}
sl@0: 
sl@0: CWsDisplayChangeNotifier* CWsDisplayChangeNotifier::NewL(MWsDisplayControl* aNextLevelInterface, CScreen *aOwner)
sl@0: 	{
sl@0: 	CWsDisplayChangeNotifier* self = new(ELeave) CWsDisplayChangeNotifier(aNextLevelInterface, aOwner);
sl@0: 	CleanupStack::PushL(self);
sl@0: 	self->ConstructL();
sl@0: 	CleanupStack::Pop();
sl@0: 	return self;
sl@0: 	}
sl@0: 
sl@0: void CWsDisplayChangeNotifier::ConstructL()
sl@0: 	{
sl@0: 	iRetry = CEventQueueRetry::NewL();
sl@0: 	}
sl@0: 
sl@0: void CWsDisplayChangeNotifier::IssueNotificationRequest()
sl@0: 	{
sl@0: 	//before submitting request, save the last resolution list
sl@0: 	iLastErr = iNextLevelInterface->GetResolutions(iLastResList);
sl@0: 	if(iLastErr != KErrNone)
sl@0: 		{
sl@0: 		//probabally KErrDisconnect
sl@0: 		iLastResList.Reset();
sl@0: 		}
sl@0: 	iNextLevelInterface->NotifyOnDisplayChange(iStatus);
sl@0: 	SetActive();
sl@0: 	}
sl@0: 
sl@0: void CWsDisplayChangeNotifier::CancelNotificationRequest()
sl@0: 	{
sl@0: 	Cancel();
sl@0: 	}
sl@0: 
sl@0: void CWsDisplayChangeNotifier::RunL()
sl@0: 	{
sl@0: 	if(iStatus == KErrNone)
sl@0: 		{
sl@0: 		//IssueNotificationRequest() will overwrite iLastResList and iLastErr, save a copy first
sl@0: 		TInt lastErr = iLastErr;
sl@0: 		RArray<MWsDisplayControl::TResolution> lastResList;
sl@0: 		CleanupClosePushL(lastResList);
sl@0: 		lastResList.ReserveL(iLastResList.Count());
sl@0: 		for(TInt i = 0; i < iLastResList.Count(); i++)
sl@0: 			{
sl@0: 			lastResList.Append(iLastResList[i]);
sl@0: 			}
sl@0: 		//submit request again, this should be called as early as possible in RunL(). Otherwise display change occurs
sl@0: 		//before submitting the request will be missed.
sl@0: 		IssueNotificationRequest();
sl@0: 		
sl@0: 		RArray<MWsDisplayControl::TResolution> currentResList;
sl@0: 		CleanupClosePushL(currentResList);
sl@0: 		TInt err = iNextLevelInterface->GetResolutions(currentResList);
sl@0: 		if(err != KErrNone)
sl@0: 			{
sl@0: 			//probabally KErrDisconnect
sl@0: 			currentResList.Reset();
sl@0: 			}
sl@0: 		//return code not equal also counts as an event
sl@0: 		if(!IsResListEqual(currentResList, lastResList) || lastErr != err)
sl@0: 			{
sl@0: 			//first thing is to cancel the retry AO if it's running for the last event
sl@0: 			iRetry->CancelRetry();
sl@0: 			
sl@0: 			iOwner->IncreaseDisplaySpinner();
sl@0: 			//put display change event on queue
sl@0: 			RPointerArray<CWsClient> clientArray;
sl@0: 			CleanupClosePushL(clientArray);
sl@0: 			User::LeaveIfError(iOwner->GetNotificationClients(clientArray));
sl@0: 			TBool eventOnAllQueues = ETrue;
sl@0: 			for(TInt i = 0; i < clientArray.Count(); i++)
sl@0: 				{
sl@0: 				if(!TWindowServerEvent::SendDisplayChangedEvents(clientArray[i], iOwner->ScreenNumber(),
sl@0: 						iOwner->ConfigSpinner(), iOwner->DisplaySpinner()))
sl@0: 					{
sl@0: 					eventOnAllQueues = EFalse;
sl@0: 					clientArray[i]->SetRetryFlag(EEventDisplayChanged);
sl@0: 					}
sl@0: 				}
sl@0: 			CleanupStack::PopAndDestroy(&clientArray);
sl@0: 			
sl@0: 			//some event queues are full, kick off retry AO
sl@0: 			if(!eventOnAllQueues)
sl@0: 				{
sl@0: 				iRetry->Init(iOwner);
sl@0: 				iRetry->Retry(KRetryInitialDelay);
sl@0: 				}
sl@0: 						
sl@0: 			//codes below are dealing with detach/attach
sl@0: 			MWsDisplayPolicy* policy = iOwner->DisplayPolicy();
sl@0: 			if((err == KErrDisconnected && lastErr != KErrDisconnected)
sl@0: 					||(currentResList.Count() == 0 && lastResList.Count() != 0))
sl@0: 				{
sl@0: 				//The display is disconnected
sl@0: 				if(policy)
sl@0: 					{
sl@0: 					TInt appMode = policy->SuitableAppMode(MWsDisplayPolicy::EDetach);
sl@0: 					//Last app mode can be resumed when display is connected again from disconnection
sl@0: 					iOwner->DisplayPolicy()->SetLastAppMode(iOwner->ScreenSizeMode());
sl@0: 					//This gonna set the screen mode to smallest app mode
sl@0: 					if(appMode >= 0)
sl@0: 						{
sl@0: 						iOwner->doSetScreenMode(appMode);
sl@0: 						}
sl@0: 					}
sl@0: 				else
sl@0: 					{
sl@0: 					//if policy is not available, do a SetConfiguration set to the same config before disconnect
sl@0: 					//this will update parameters for MDisplayMapping stored in CDisplayPolicy
sl@0: 					TDisplayConfiguration config;
sl@0: 					iNextLevelInterface->GetConfiguration(config);
sl@0: 					iNextLevelInterface->SetConfiguration(config);
sl@0: 					}
sl@0: 				//stop DSA drawing as the above set screen mode is under disconnection and it won't
sl@0: 				//go the normal routine to stop DSA drawing
sl@0: 				iOwner->AbortAllDirectDrawing(RDirectScreenAccess::ETerminateScreenMode);
sl@0: 				}
sl@0: 			
sl@0: 			if(currentResList.Count() > 0 && lastResList.Count() == 0)
sl@0: 				{
sl@0: 				//The display is connected
sl@0: 				if(policy)
sl@0: 					{
sl@0: 					TInt appMode = policy->SuitableAppMode(MWsDisplayPolicy::EAttach);
sl@0: 					//This gonna resume the screen mode to the one before disconnection
sl@0: 					if(appMode >= 0)
sl@0: 						{
sl@0: 						iOwner->doSetScreenMode(appMode);
sl@0: 						}
sl@0: 					}
sl@0: 				else
sl@0: 					{
sl@0: 					//if policy is not available, force a SetConfiguration to trigger a config change notification
sl@0: 					//as the twips size in config is changed on attaching display though resolution may remain 0x0 
sl@0: 					TDisplayConfiguration config;
sl@0: 					config.SetResolution(currentResList[0].iPixelSize);
sl@0: 					iOwner->SetConfiguration(config);
sl@0: 					}
sl@0: 				iOwner->RecalculateModeTwips();
sl@0: 				}
sl@0: 			}
sl@0: 		CleanupStack::PopAndDestroy(2, &lastResList);
sl@0: 		}
sl@0: 	else if(iStatus != KErrCancel && iStatus != KErrNotSupported)
sl@0: 		{
sl@0: 		IssueNotificationRequest();	//This should be ok, not deadlock
sl@0: 		}
sl@0: 		
sl@0: 	}
sl@0: 
sl@0: TBool CWsDisplayChangeNotifier::IsResListEqual(RArray<MWsDisplayControl::TResolution>& aResListA, RArray<MWsDisplayControl::TResolution>& aResListB)
sl@0: 	{
sl@0: 	if (aResListA.Count() != aResListB.Count())
sl@0: 		return EFalse;
sl@0: 	
sl@0: 	for(TInt i = 0; i < aResListA.Count(); i++)
sl@0: 		{
sl@0: 		if(aResListA[i].iPixelSize != aResListB[i].iPixelSize)
sl@0: 			{
sl@0: 			return EFalse;
sl@0: 			}
sl@0: 		if(aResListA[i].iTwipsSize != aResListB[i].iTwipsSize)
sl@0: 			{
sl@0: 			return EFalse;
sl@0: 			}
sl@0: 		if(!(aResListA[i].iFlags == aResListB[i].iFlags))
sl@0: 			{
sl@0: 			return EFalse;
sl@0: 			}
sl@0: 		}
sl@0: 	
sl@0: 	return ETrue;
sl@0: 	}
sl@0: 
sl@0: void CWsDisplayChangeNotifier::DoCancel()
sl@0: 	{}
sl@0: 
sl@0: CWsDisplayChangeNotifier::~CWsDisplayChangeNotifier()
sl@0: 	{
sl@0: 	Cancel();
sl@0: 	iLastResList.Close();
sl@0: 	delete iRetry;
sl@0: 	}
sl@0: 
sl@0: CWsConfigChangeNotifier::CWsConfigChangeNotifier(MWsDisplayControl* aNextLevelInterface, CScreen *aOwner)
sl@0: :CActive(EEventPriority), iNextLevelInterface(aNextLevelInterface), iOwner(aOwner)
sl@0: 	{
sl@0: 	CActiveScheduler::Add(this);
sl@0: 	}
sl@0: 
sl@0: CWsConfigChangeNotifier* CWsConfigChangeNotifier::NewL(MWsDisplayControl* aNextLevelInterface, CScreen *aOwner)
sl@0: 	{
sl@0: 	CWsConfigChangeNotifier* self = new(ELeave) CWsConfigChangeNotifier(aNextLevelInterface, aOwner);
sl@0: 	CleanupStack::PushL(self);
sl@0: 	self->ConstructL();
sl@0: 	CleanupStack::Pop();
sl@0: 	return self;
sl@0: 	}
sl@0: 
sl@0: void CWsConfigChangeNotifier::ConstructL()
sl@0: 	{
sl@0: 	iRetry = CEventQueueRetry::NewL();
sl@0: 	}
sl@0: 
sl@0: void CWsConfigChangeNotifier::IssueNotificationRequest()
sl@0: 	{
sl@0: 	//Before submitting the request, save last configuration
sl@0: 	iNextLevelInterface->GetConfiguration(iLastConfig);
sl@0: 	iNextLevelInterface->NotifyOnConfigChange(iStatus);
sl@0: 	SetActive();
sl@0: 	}
sl@0: 
sl@0: void CWsConfigChangeNotifier::CancelNotificationRequest()
sl@0: 	{
sl@0: 	Cancel();
sl@0: 	}
sl@0: 
sl@0: void CWsConfigChangeNotifier::UpdateLastSetConfiguration(TDisplayConfiguration& aNewConfig)
sl@0:     {
sl@0:     TSize resolution(0,0);
sl@0:     if (aNewConfig.GetResolution(resolution))
sl@0:         {
sl@0:         iLastSetConfig.SetResolution(resolution);
sl@0:         }
sl@0:     
sl@0:     TSize resolutionTwips(0,0);
sl@0:     if (aNewConfig.GetResolutionTwips(resolutionTwips))
sl@0:         {
sl@0:         iLastSetConfig.SetResolutionTwips(resolutionTwips);   
sl@0:         }
sl@0:     
sl@0:     TDisplayConfiguration1::TRotation rotation;
sl@0:     if (aNewConfig.GetRotation(rotation))
sl@0:         {
sl@0:         iLastSetConfig.SetRotation(rotation);
sl@0:         }
sl@0:     }
sl@0: 
sl@0: void CWsConfigChangeNotifier::RunL()
sl@0: 	{
sl@0: 	if(iStatus == KErrNone)
sl@0: 		{
sl@0: 		//IssueNotificationRequest() will overwrite iLastConfig, save a copy first
sl@0: 		TDisplayConfiguration lastConfig(iLastConfig);
sl@0: 		IssueNotificationRequest();
sl@0: 		
sl@0: 		TDisplayConfiguration currentConfig;
sl@0: 		iNextLevelInterface->GetConfiguration(currentConfig);
sl@0: 		if(!(currentConfig == lastConfig))
sl@0: 			{
sl@0: 			//first thing is to cancel the retry AO if it's running for the last event
sl@0: 			iRetry->CancelRetry();
sl@0: 			
sl@0: 			iOwner->IncreaseConfigSpinner();
sl@0: 			
sl@0: 			//if the config change comes from a render stage then ensure screen device size 
sl@0: 			//is also updated
sl@0: 			TSize currentRes;
sl@0: 			currentConfig.GetResolution(currentRes);
sl@0: 			TBool disconnected = (currentRes.iHeight == 0 || currentRes.iWidth == 0) ? ETrue : EFalse;
sl@0:             
sl@0: 			//if the config change is due to CScreen::SetConfiguration() being called then we
sl@0: 			//don't want to update it again. Only update if the configs are different and the
sl@0: 			//display is connected...
sl@0: 			TDisplayConfiguration lastSetConfig(iLastSetConfig);
sl@0: 			if (!((currentConfig == lastSetConfig) || (disconnected)))
sl@0: 			    {
sl@0:                 TDisplayConfiguration1::TRotation rotation;
sl@0:                 if (lastSetConfig.GetRotation(rotation))
sl@0:                     {
sl@0:                     //use the latest rotation value to ensure we don't get any
sl@0:                     //inconsistencies with the layer extents
sl@0:                     currentConfig.SetRotation(rotation);
sl@0:                     }
sl@0:                 iOwner->UpdateConfiguration(currentConfig);
sl@0: 			    }		
sl@0: 			
sl@0: 			//put config change event on queue
sl@0: 			RPointerArray<CWsClient> clientArray;
sl@0: 			CleanupClosePushL(clientArray);
sl@0: 			User::LeaveIfError(iOwner->GetNotificationClients(clientArray));
sl@0: 			TBool eventOnAllQueues = ETrue;
sl@0: 			for(TInt i = 0; i < clientArray.Count(); i++)
sl@0: 				{
sl@0: 				if(!TWindowServerEvent::SendDisplayChangedEvents(clientArray[i], iOwner->ScreenNumber(),
sl@0: 						iOwner->ConfigSpinner(), iOwner->DisplaySpinner()))
sl@0: 					{
sl@0: 					eventOnAllQueues = EFalse;
sl@0: 					clientArray[i]->SetRetryFlag(EEventDisplayChanged);					
sl@0: 					}
sl@0: 				}
sl@0: 			
sl@0: 			CleanupStack::PopAndDestroy(&clientArray);
sl@0: 			//some event queues are full, kick off retry AO
sl@0: 			if(!eventOnAllQueues)
sl@0: 				{
sl@0: 				iRetry->Init(iOwner);
sl@0: 				iRetry->Retry(KRetryInitialDelay);
sl@0: 				}
sl@0: 			}
sl@0: 		iNextLevelInterface->GetConfiguration(iLastSetConfig);
sl@0: 		}
sl@0: 	else if(iStatus != KErrCancel && iStatus != KErrNotSupported)
sl@0: 		{
sl@0: 		IssueNotificationRequest();
sl@0: 		}
sl@0: 	
sl@0: 	}
sl@0: 
sl@0: 
sl@0: void CWsConfigChangeNotifier::DoCancel()
sl@0: 	{}
sl@0: 
sl@0: CWsConfigChangeNotifier::~CWsConfigChangeNotifier()
sl@0: 	{
sl@0: 	Cancel();
sl@0: 	delete iRetry;
sl@0: 	}
sl@0: 
sl@0: