uifw/AvKon/src/aknpopupfader.cpp
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Tue, 14 Sep 2010 21:48:24 +0300
branchRCL_3
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Revision: 201033 Kit: 201035
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/*
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* Copyright (c) 2002 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 "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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*
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*/
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// AknPopupFader.cpp
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//
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// Copyright (c) 1997-2001 Symbian Ltd.  All rights reserved.
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//
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#include "AknPopupFader.h"
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#include <coecntrl.h>
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#include <eikdef.h>
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#include <coemain.h>
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#include <eikon.hrh>
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#include <eikenv.h>
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#include <aknappui.h>
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#include <w32std.h>
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#include <eikdialg.h>
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#include <AknSgcc.h>
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const TUid KUidFadeStackTls = {0x101f760b};
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const TInt KFadeStackGranularity = 4;
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EXPORT_C TInt MAknFadedComponent::CountFadedComponents()
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	{
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	return 0;
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	}
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EXPORT_C CCoeControl* MAknFadedComponent::FadedComponent(TInt /*aIndex*/)
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	{
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	return NULL;
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	}
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NONSHARABLE_CLASS(CAknFadeStack) : public CCoeStatic, public MCoeForegroundObserver
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	{
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public:
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    enum TStackPosition
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        {
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        EStackTop = 0,
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        EStackNextToTop
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        };
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public:
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	static void CreateL();
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	static CAknFadeStack* Static();
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	void PushPopupFaderL(MAknFadedComponent* aPopup);
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	void PopPopupFader(MAknFadedComponent* aPopup);
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private:
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	CAknFadeStack();
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	~CAknFadeStack();
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	void ConstructL();
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	void SetComponentFaded(MAknFadedComponent* aPopup, TBool aFade);
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	MAknFadedComponent* PopupFader(TStackPosition aPosition) const;
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    TBool IsFullscreenDialog(MAknFadedComponent* aPopup);
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	void SetFade();
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	void RemovePopupFader(MAknFadedComponent* aPopup);
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    void SetSystemFadeOff();
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private: // from MCoeForegroundObserver
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	void HandleGainingForeground();
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	void HandleLosingForeground();
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private:
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	CArrayFixFlat<MAknFadedComponent*>* iFadeStack;
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	TBool iIsForeground;
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	CCoeEnv* iCoeEnv;
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	TBool iSystemFaded;
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	};
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CAknFadeStack::CAknFadeStack()
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: CCoeStatic(KUidFadeStackTls), iCoeEnv(CCoeEnv::Static())
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	{
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	    iSystemFaded = EFalse;
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	}
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CAknFadeStack::~CAknFadeStack()
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	{
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	iCoeEnv->RemoveForegroundObserver(*this);
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	delete iFadeStack;
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	}
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void CAknFadeStack::ConstructL()
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	{
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	iFadeStack = new(ELeave) CArrayFixFlat<MAknFadedComponent*>(KFadeStackGranularity);
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	iCoeEnv->AddForegroundObserverL(*this);
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	}
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CAknFadeStack* CAknFadeStack::Static()
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	{
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	return static_cast<CAknFadeStack*>(CCoeEnv::Static(KUidFadeStackTls));
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	}
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void CAknFadeStack::CreateL()
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	{ // static
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	CAknFadeStack* self=CAknFadeStack::Static();
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	if (!self)
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		{
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		self=new(ELeave) CAknFadeStack(); // CCoeEnv takes ownership immediately
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		CleanupStack::PushL(self);
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		self->ConstructL();
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		CleanupStack::Pop();
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		}
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	}
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   120
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   121
void CAknFadeStack::HandleGainingForeground()
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	{
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	iIsForeground = ETrue;
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	SetFade();
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	}
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   126
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void CAknFadeStack::HandleLosingForeground()
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	{
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	iIsForeground = EFalse;
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	iSystemFaded = EFalse;
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    SetFade();
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	}
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   133
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void CAknFadeStack::PushPopupFaderL(MAknFadedComponent* aPopup)
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	{
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   136
	RemovePopupFader(aPopup);
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	iFadeStack->AppendL(aPopup);
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	SetFade();
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   139
	}
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   140
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   141
void CAknFadeStack::PopPopupFader(MAknFadedComponent* aPopup)
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	{
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	RemovePopupFader(aPopup);
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	SetFade();
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	}
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   146
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void CAknFadeStack::RemovePopupFader(MAknFadedComponent* aPopup)
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	{
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	TInt end = iFadeStack->Count() - 1;
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	for (TInt ii=end; ii>=0; ii--)
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		{
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		if (iFadeStack->At(ii) == aPopup)
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			iFadeStack->Delete(ii);
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		}
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	}
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   156
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void CAknFadeStack::SetSystemFadeOff()
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    {
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   159
    if ( iSystemFaded || CAknSgcClient::IsSystemFaded() )
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        {
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        CAknAppUi* appUi = iAvkonAppUi;
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        TRAP_IGNORE( appUi->SetFadedL(EFalse) );
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        iSystemFaded = EFalse;
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        }
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    }
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   166
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   167
void CAknFadeStack::SetComponentFaded(MAknFadedComponent* aPopup, TBool aFade)
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	{
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	TInt count = aPopup->CountFadedComponents();
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	for (TInt ii=0; ii<count; ii++)
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		{
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		CCoeControl* control = aPopup->FadedComponent(ii);
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		//fix for TSW error EHLN-7HHFPX
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		if ( control != NULL )
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		    {
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		    control->DrawableWindow()->SetFaded(aFade, RWindowTreeNode::EFadeIncludeChildren);    
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		    }
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		}
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	}
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TBool CAknFadeStack::IsFullscreenDialog(MAknFadedComponent* aPopup)
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{
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   183
	TInt count = aPopup->CountFadedComponents();
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	for (TInt ii=0; ii<count; ii++)
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   185
		{
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		CCoeControl* control = aPopup->FadedComponent(ii);
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	    CEikDialog* dialg = NULL;
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	    //fix for TSW error EHLN-7HHFPX
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	    if ( control != NULL )
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	        {
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	        dialg = control->MopGetObjectNoChaining(dialg);
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	        if(dialg != NULL)
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   193
	            {
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	            // is a dialog, get flags
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   195
	            TInt flags = dialg->DialogFlags();
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   196
	            if ((flags&EEikDialogFlagFillAppClientRect) || (flags&EEikDialogFlagFillScreen) || (flags&EEikDialogFlagNoBackgroundFade) )
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   197
	                {
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	                return ETrue;
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   199
	                }
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	            }    
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   201
	        }
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   202
		}
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   203
    return EFalse;
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   204
}
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   205
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MAknFadedComponent* CAknFadeStack::PopupFader(TStackPosition aPosition) const
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   207
    {
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   208
    TInt count = iFadeStack->Count();
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   209
    return count > aPosition ? iFadeStack->At(count-1-aPosition) : NULL;
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   210
    }
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   211
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   212
void CAknFadeStack::SetFade()
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	{
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   214
	MAknFadedComponent* top = PopupFader(EStackTop);
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   215
	CAknAppUi* appUi = iAvkonAppUi;
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   216
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	if (iIsForeground || appUi->IsForeground())
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   218
		{
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		if(top) 
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   220
		    {
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   221
		    if(!IsFullscreenDialog(top))
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   222
		        {
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   223
    		    if(!iSystemFaded)
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   224
	    	        {
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    		        TRAP_IGNORE( appUi->SetFadedL(ETrue) );
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	    	        iSystemFaded = ETrue;
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		            }
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		        else
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    		        {
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    		        // If a popup comes on top of another, system fade is not
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    		        // called but the previous top popup is faded
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    		        MAknFadedComponent* prevTop = PopupFader(EStackNextToTop);
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                    if (prevTop)
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                        {
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                        SetComponentFaded(prevTop, ETrue);
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                        }
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	    	        }
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    			SetComponentFaded(top, EFalse);
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		        }
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		    else
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		        {
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                // Remove fading for fullscreen dialogs		            
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                SetSystemFadeOff();                		            
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	    	    }
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		    }
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		else
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		    {
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            SetSystemFadeOff();
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		    }
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		}
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	else if (top)
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		{
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		SetComponentFaded(top, appUi->IsFaded());
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		}
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	}
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EXPORT_C void TAknPopupFader::FadeBehindPopup(MAknFadedComponent* aComponent,  CCoeControl* aParent, TBool aFade)
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	{
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	TRAP_IGNORE(FadeBehindPopupL(aComponent, aParent, aFade));
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	}
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void TAknPopupFader::FadeBehindPopupL(MAknFadedComponent* aComponent,  CCoeControl* /*aParent*/, TBool aFade)
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	{
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	CAknFadeStack* stack=CAknFadeStack::Static();
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	if (stack)
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		{
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		if (aFade)
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			{
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			stack->PushPopupFaderL(aComponent);
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			}
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		else
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			{
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			stack->PopPopupFader(aComponent);
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			}
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		}
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	}
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void TAknPopupFader::CreateStaticL()
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	{
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	CAknFadeStack::CreateL();
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	}
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// End of File