mulwidgets/mulcoverflowwidget/src/mulcoverflowao.cpp
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Mon, 21 Jun 2010 16:15:51 +0300
branchRCL_3
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parent 0 e83bab7cf002
permissions -rw-r--r--
Revision: 201023 Kit: 2010125
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/*
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* Copyright (c) 2007-2008 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:  Active Object header for CoverFlow
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*
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*/
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// Class Header
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#include "mulcoverflowao.h"
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// Alf Headers
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#include <math.h>
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// Local Header
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#include "mulcoverflowcontrol.h"
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#include "mulbaseelement.h"
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#include "mullog.h"
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namespace Alf
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	{
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// ---------------------------------------------------------------------------
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// MulCoverFlowAo
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// ---------------------------------------------------------------------------
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//
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MulCoverFlowAo::MulCoverFlowAo( MulCoverFlowControl& aControl ) : CTimer( EPriorityNormal ), mControl(aControl)							     								
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	{
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	MUL_LOG_ENTRY_EXIT("aakash::MulCoverFlowAo::MulCoverFlowAo"); 
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	ConstructL();
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	CActiveScheduler::Add(this);
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	}
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// ---------------------------------------------------------------------------
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// ~MulCoverFlowAo
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// ---------------------------------------------------------------------------
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//
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MulCoverFlowAo::~MulCoverFlowAo()
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	{
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	MUL_LOG_ENTRY_EXIT("aakash::MulCoverFlowAo::~MulCoverFlowAo"); 
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	StopTimer();	
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	}
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// ---------------------------------------------------------------------------
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// StartMoving
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// ---------------------------------------------------------------------------
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//     
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void MulCoverFlowAo::StartMoving(TReal32 aSpeedPoint, int aCurrGestureDirection,bool aFastScrollForKey,int aAnimationTime)
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    {
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	MUL_LOG_ENTRY_EXIT("aakash::MulCoverFlowAo::StartMoving"); 
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	int previosDir = mCurrGestureDirection;
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	mCurrGestureDirection = aCurrGestureDirection;
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	aSpeedPoint = aSpeedPoint < 0 ? aSpeedPoint * -1 : aSpeedPoint;
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	// Fast scroll in key event ,
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	// Three steps are there Max(100),150,200(Min).	
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	if (aFastScrollForKey)
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		{
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		mTransitionTime = aAnimationTime;	
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		}
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	else
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		{
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		mTransitionTime = 200 *(1 + (1 - aSpeedPoint)*5);		
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		}
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	if( !mStarted )
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		{
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		// Cancle any pending requests and start a new request
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	    // this is because the layout direction n speed should be changed according to the current swipe
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	    if( IsActive() )
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	    	{
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	    	MUL_LOG_INFO("MUL::MulCF::Cancel Previous Animation ");
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	    	Cancel();
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	    	}
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	    MUL_LOG_INFO("MUL::MulCF::Start New Animation ");
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	    mStarted = true;
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		After(0);	
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		}
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	else
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		{
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		if (previosDir != mCurrGestureDirection)
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			{
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			mTransitionTime = 200;
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			Cancel();
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			After(0);	
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			}
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		else
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			{
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			}
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		}
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    }
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// ---------------------------------------------------------------------------
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// StopMoving
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// ---------------------------------------------------------------------------
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//  
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void MulCoverFlowAo::StopMoving()
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	{
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	MUL_LOG_ENTRY_EXIT("aakash::MulCoverFlowAo::StopMoving"); 	
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	StopTimer();
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	mCurrGestureDirection = 0;
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	mTransitionTime = 0;
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	mWaitingTime = 0;
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	mStarted = false;
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	}
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// ---------------------------------------------------------------------------
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// StopTimer
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// ---------------------------------------------------------------------------
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// 
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void MulCoverFlowAo::StopTimer()
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	{
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	MUL_LOG_ENTRY_EXIT("aakash::MulCoverFlowAo::StopTimer"); 	
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	if( IsActive() )
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    	{
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    	Cancel();
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    	}
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	}
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// ---------------------------------------------------------------------------
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// RunL
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// ---------------------------------------------------------------------------
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// 	
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void MulCoverFlowAo::RunL()
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	{
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	MUL_LOG_ENTRY_EXIT("aakash::MulCoverFlowAo::RunL");	
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	// Check if the layout ahs moved by one complete visaul. 
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	// Then change the highlight and again start moving the layout.
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	// If it hasnot moved by complete visaul then allow the layout to move to new position but
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	// dont change the highlight
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	ChangeHighLight();	
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	After(fabs(mTransitionTime*600));
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	}
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// ---------------------------------------------------------------------------
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// ChangeHighLight
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// ---------------------------------------------------------------------------
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// 	
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void MulCoverFlowAo::ChangeHighLight()
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	{
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	MUL_LOG_ENTRY_EXIT("aakash::MulCoverFlowAo::ChangeHighLight"); 	
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	// Inform widget/model that highlight has changed	
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	if(mCurrGestureDirection > 0 )
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		{
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		mControl.HandleNavigationEvent ( EEventScrollLeft );	
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		}
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	else if(mCurrGestureDirection < 0 )
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		{
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		mControl.HandleNavigationEvent ( EEventScrollRight );
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		}
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	else
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		{
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		// no need to change the highlight	
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		}
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	}
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// ---------------------------------------------------------------------------
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// FastScrollTransitionTime
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// ---------------------------------------------------------------------------
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// 	
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int MulCoverFlowAo::FastScrollTransitionTime()
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	{	
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	return mTransitionTime;
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	}
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	} // End of namespace .
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//End of file
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