mulwidgets/mulcoverflowwidget/src/mulcoverflowcontrol.cpp
branchRCL_3
changeset 26 0e9bb658ef58
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25:4ea6f81c838a 26:0e9bb658ef58
       
     1 /*
       
     2 * Copyright (c) 2007-2008 Nokia Corporation and/or its subsidiary(-ies).
       
     3 * All rights reserved.
       
     4 * This component and the accompanying materials are made available
       
     5 * under the terms of "Eclipse Public License v1.0"
       
     6 * which accompanies this distribution, and is available
       
     7 * at the URL "http://www.eclipse.org/legal/epl-v10.html".
       
     8 *
       
     9 * Initial Contributors:
       
    10 * Nokia Corporation - initial contribution.
       
    11 *
       
    12 * Contributors:
       
    13 *
       
    14 * Description:  Widget Control Implementation
       
    15  *
       
    16 */
       
    17 
       
    18 
       
    19 //  Include Files
       
    20 
       
    21 // Class Headers
       
    22 #include "mulcoverflowcontrol.h"
       
    23 
       
    24 #include <AknUtils.h>
       
    25 // Alf Headers
       
    26 #include <alf/alfenv.h>
       
    27 // for dosetimage func
       
    28 #include <alf/alfimageloaderutil.h>
       
    29 #include <alf/alfbitmapprovider.h>
       
    30 #include <alf/alfdisplay.h>
       
    31 #include <alf/alfresourcepool.h> //for resource pooling
       
    32 #include <alf/alfwidgetenvextension.h> //for resource pooling
       
    33 #include <alf/alfutil.h>
       
    34 #include <alf/alfimagevisual.h>
       
    35 
       
    36 // Mul Headers
       
    37 #include <mul/mulevent.h>
       
    38 #include <mul/imulsliderwidget.h>
       
    39 
       
    40 
       
    41 // Gesture Helper 
       
    42 #include <gesturehelper.h>
       
    43 
       
    44 // Local Headers
       
    45 #include "mulbaseelement.h"
       
    46 #include "mulcoverflowao.h"
       
    47 #include "mulcoverflowtemplate.h" 
       
    48 #include "mulcoverflowwidget.h"
       
    49 #include "mulleave.h" //for leaving function
       
    50 #include "mullog.h" //for logs
       
    51 #include "mulassert.h"
       
    52 #include "imulmodelaccessor.h"
       
    53 
       
    54 //Gesture Helper
       
    55 using namespace GestureHelper;
       
    56 
       
    57 namespace Alf
       
    58 	{
       
    59 		
       
    60 struct TMulCoverFlowControlImpl
       
    61 	{
       
    62 	TMulCoverFlowControlImpl()
       
    63 		{
       
    64 		mHighlightIndex = -1;
       
    65 		mScreenWidth = 0;
       
    66 		mScreenHeight = 0;
       
    67 		mGestureSpeed  = 0;
       
    68 		mCoverFlow2DTemplate = NULL;
       
    69 		mIsWidgetVisible = true; //by default widget is visible .
       
    70 		mBaseElement = NULL;
       
    71 		mFastScroll = false;
       
    72 		mNumVisibleItem = 0;
       
    73 		mDefaultTextureId = -1;	
       
    74 		mBounceInProgress = false;
       
    75 		mDirectionChanged = false;
       
    76 		mDontBounce = false;
       
    77 		mNumberOfRepeatEvents = 0;
       
    78 		mIsMirrored = false;
       
    79 		}
       
    80 			
       
    81     /// @bug critical:avanhata:4/7/2008 you should never cache a property that is a property of
       
    82     /// another class. The model exists to own this type of information. I gave this review comment
       
    83     /// as "critical", since it is exactly these cached member variables that will 
       
    84     /// yield most of bugs and complexity. Refactor it away.
       
    85 	int mHighlightIndex;
       
    86     
       
    87 	int mScreenWidth;
       
    88     int	mScreenHeight;
       
    89 	bool mIsWidgetVisible;
       
    90 	MulBaseElement* mBaseElement;	
       
    91 	auto_ptr<MulCoverFlowTemplate> mCoverFlow2DTemplate;  // 2D cover flow template //owns 
       
    92 	TReal32 mGestureSpeed;
       
    93 	bool mFastScroll; 		// Flag to indicate wheher in fast scroll mode or not
       
    94 	int mNumVisibleItem;
       
    95 	int mDefaultTextureId;
       
    96 	bool mBounceInProgress;
       
    97 	int mReferencePoint;
       
    98 	bool mDirectionChanged;
       
    99 	int mCurrGestureDir; 
       
   100 	bool mDontBounce;
       
   101 	int mNumberOfRepeatEvents;
       
   102 	bool mIsLandscape;
       
   103 	bool mIsMirrored;
       
   104 	};
       
   105 	
       
   106 // ---------------------------------------------------------------------------
       
   107 // MulCoverFlowControl
       
   108 // ---------------------------------------------------------------------------
       
   109 //
       
   110 MulCoverFlowControl::MulCoverFlowControl(CAlfEnv& aEnv	)
       
   111 	{
       
   112 	//Call the base class method
       
   113 	MUL_LOG_ENTRY_EXIT("MUL:MulCoverFlowControl::MulCoverFlowControl");
       
   114 	CAlfWidgetControl::construct ( aEnv);
       
   115 
       
   116 	mData.reset( new (EMM)TMulCoverFlowControlImpl );
       
   117     
       
   118 	mFeedback = MTouchFeedback::Instance(); 
       
   119 	
       
   120     if (AknLayoutUtils::LayoutMirrored())
       
   121     	{
       
   122     	mData->mIsMirrored = true;
       
   123     	}
       
   124     else
       
   125 		{
       
   126 		mData->mIsMirrored = false;
       
   127 		}
       
   128 		
       
   129 	mData->mIsLandscape = IsLandscape();
       
   130 
       
   131     THROW_IF_LEAVES
       
   132 		(
       
   133         /// @bug critical:avanhata:30/9/2008 this is a symbian code section. don't call throwing osn code here. 
       
   134         /// Throwing within a TRAP is at best undefined
       
   135 		mCoverFlowAo.reset( new(EMM) MulCoverFlowAo( *this ) );
       
   136 
       
   137 		mHelper.reset(GestureHelper::CGestureHelper::NewL( *this ));
       
   138 		mHelper->InitAlfredPointerCaptureL( aEnv, aEnv.PrimaryDisplay(), KGroupId ); 
       
   139 		mHelper->SetHoldingEnabled( EFalse );
       
   140 		)
       
   141 	}
       
   142 		
       
   143 // ---------------------------------------------------------------------------
       
   144 // ~MulCoverFlowControl
       
   145 // ---------------------------------------------------------------------------
       
   146 //	
       
   147 MulCoverFlowControl::~MulCoverFlowControl()
       
   148 	{
       
   149 	MUL_LOG_ENTRY_EXIT("MUL:MulCoverFlowControl::~MulCoverFlowControl");
       
   150 
       
   151     if( ModelAccessor() != NULL )
       
   152         {
       
   153         ModelAccessor()->RemoveModelObserver(this);
       
   154         }
       
   155 
       
   156 	DestroySlider();      
       
   157 
       
   158 	}
       
   159     
       
   160 // ---------------------------------------------------------------------------
       
   161 // makeInterface
       
   162 // ---------------------------------------------------------------------------
       
   163 //          
       
   164 IAlfInterfaceBase* MulCoverFlowControl::makeInterface( const IfId& aType )
       
   165     {
       
   166     MUL_LOG_ENTRY_EXIT("MUL:MulCoverFlowControl::makeInterface");
       
   167     UString param(aType.mImplementationId);
       
   168     return CAlfWidgetControl::makeInterface( aType );
       
   169     }
       
   170 
       
   171 // ---------------------------------------------------------------------------
       
   172 // ResetShowWidgetFlag
       
   173 // ---------------------------------------------------------------------------
       
   174 //  
       
   175 void MulCoverFlowControl::ResetShowWidgetFlag( bool aNewResetValue )
       
   176     {
       
   177     MUL_LOG_ENTRY_EXIT("MUL:MulCoverFlowControl::ResetShowWidgetFlag");
       
   178     mData->mIsWidgetVisible = aNewResetValue;
       
   179     if( aNewResetValue)
       
   180         {
       
   181     	mHelper->AddObserver(this);
       
   182         } 
       
   183     }
       
   184 
       
   185 // ---------------------------------------------------------------------------
       
   186 // Template2D
       
   187 // ---------------------------------------------------------------------------
       
   188 //
       
   189 MulCoverFlowTemplate*  MulCoverFlowControl::Template2D()
       
   190 	{
       
   191 	MUL_LOG_ENTRY_EXIT("MUL:MulCoverFlowControl::Template2D");
       
   192 	return mData->mCoverFlow2DTemplate.get();
       
   193 	}
       
   194 		
       
   195 // ---------------------------------------------------------------------------
       
   196 // IsFastScrollMode
       
   197 // ---------------------------------------------------------------------------
       
   198 //	
       
   199 bool MulCoverFlowControl::IsFastScrollMode()
       
   200 	{
       
   201 	MUL_LOG_ENTRY_EXIT("MUL:MulCoverFlowControl::IsFastScrollMode");
       
   202 	return mData->mFastScroll;
       
   203 	}	
       
   204 	
       
   205 
       
   206 //-----------------------Event Handling API's -------------------------------
       
   207 // ---------------------------------------------------------------------------
       
   208 // handleEvent
       
   209 // ---------------------------------------------------------------------------
       
   210 //	
       
   211 AlfEventStatus MulCoverFlowControl::handleEvent(const TAlfEvent& aEvent)
       
   212 	{
       
   213     MUL_LOG_ENTRY_EXIT("MUL:MulCoverFlowControl::handleEvent");
       
   214     if( aEvent.IsCustomEvent() )
       
   215         {
       
   216         return HandleCustomEvent( aEvent );
       
   217         } 
       
   218     else if( aEvent.IsKeyEvent() && mData->mIsWidgetVisible )
       
   219         {
       
   220         if(TotalModelCount() <= KMinNumItemForFastScroll || 
       
   221         	aEvent.KeyEvent().iRepeats == 0 )
       
   222 	        {
       
   223 	        return HandleKeyEvent( aEvent );	
       
   224 	        }
       
   225 	    else
       
   226 	    	{	        
       
   227 		    return HandleRepeatKeyEvent( aEvent );	
       
   228 	    	}
       
   229         }      
       
   230  	else if( aEvent.IsPointerEvent() && mData->mIsWidgetVisible )
       
   231         {                 
       
   232 		MUL_LOG_INFO("MUL::MulCoverFlowControl: handleEvent ::pointer event");
       
   233 		//commented as gives warning in armv5 
       
   234 		//THROW_IF_LEAVES
       
   235 		     //(
       
   236 		     TBool result = mHelper->OfferEventL(aEvent);
       
   237 		     MUL_LOG_INFO1("MUL::MulCoverFlowControl: handleEvent::result %d ",result);
       
   238 		     return result ? EEventConsumed :EEventNotHandled ;            
       
   239 		    // )            
       
   240         }    
       
   241    	return EEventNotHandled;
       
   242     }
       
   243 // ---------------------------------------------------------------------------
       
   244 // HandleCustomEvent
       
   245 // ---------------------------------------------------------------------------
       
   246 //  
       
   247 AlfEventStatus MulCoverFlowControl::HandleCustomEvent( const TAlfEvent& aEvent )
       
   248     {
       
   249     MUL_LOG_ENTRY_EXIT("MUL:MulCoverFlowControl::HandleCustomEvent");
       
   250     AlfEventStatus eventConsumed = EEventNotHandled;
       
   251     switch( aEvent.CustomParameter() )
       
   252         {
       
   253         case ECustomEventBounceBack:
       
   254             {
       
   255             MUL_LOG_INFO("MUL::MulCF:Handle custom event Compensate Bounce");
       
   256             mFeedback->InstantFeedback(ETouchFeedbackBasic); 
       
   257             mData->mBaseElement->StopDoodling(/*3*KBounceTime*/500);
       
   258             if ((TotalModelCount() > 1 && mData->mNumVisibleItem == 1) || 
       
   259             	(TotalModelCount() > 2))
       
   260 	            {
       
   261 	            Env().Send(TAlfCustomEventCommand(ECustomEventScroll, this),500/*3*KBounceTime*/ + 30); 	
       
   262 	            }
       
   263 	        else
       
   264 	        	{
       
   265 	        	//start marquee in case of text is visible.
       
   266 	        	if(mData->mBaseElement->IsTextVisibile())
       
   267 	        	    {
       
   268 	        	    //start marquee after 1 sec (after doodle completed)
       
   269 	        	    Env().Send(TAlfCustomEventCommand(
       
   270 	        	            ECustomEventMarqueeStart, this),500/*3*KBounceTime*/ + KMarqueeTime1000);
       
   271 	        	    }
       
   272 	        	// if only one item is there then no need to scroll.
       
   273 	        	mData->mBounceInProgress = false;	
       
   274 	        	}
       
   275             eventConsumed = EEventConsumed;
       
   276             break;
       
   277             } 
       
   278         case ECustomEventScroll:
       
   279             {
       
   280             MUL_LOG_INFO("MUL::MulCF:Handle custom event Compensate Bounce");
       
   281             Env().Send(TAlfCustomEventCommand(ECustomEventBounceCompleted,this),600); 
       
   282             
       
   283             if (mData->mHighlightIndex == 0)
       
   284 	            {
       
   285 	            DoSetFocusIndex(TotalModelCount() -1,/*4*KBounceTime*/800);	
       
   286 	            }
       
   287 	        else
       
   288 	        	{
       
   289 	        	DoSetFocusIndex(0,800);	
       
   290 	        	}
       
   291 	        SetSliderTickPosition();
       
   292             eventConsumed = EEventConsumed;
       
   293             break;
       
   294             } 
       
   295         case ECustomEventBounceCompleted:
       
   296         	{
       
   297         	mData->mBounceInProgress = false;
       
   298 			eventConsumed = EEventConsumed;
       
   299             break;        		
       
   300         	}
       
   301         case ECustomEventMarqueeStart:
       
   302         	{
       
   303         	mData->mBaseElement->StartMarquee(mulvisualitem::KMulTitle);
       
   304 			eventConsumed = EEventConsumed;
       
   305 			break;
       
   306         	}
       
   307         case ECustomEventTitleMarqueeFinished:
       
   308             {
       
   309             mData->mBaseElement->StopMarquee(mulvisualitem::KMulTitle);
       
   310             eventConsumed = EEventConsumed;
       
   311             break;
       
   312             }
       
   313         case ECustomEventDetailMarqueeStart:
       
   314             {
       
   315             mData->mBaseElement->StartMarquee(mulvisualitem::KMulDetail);
       
   316             eventConsumed = EEventConsumed;
       
   317             break;
       
   318             }
       
   319         case ECustomEventMarqueeFinished:
       
   320            {
       
   321            mData->mBaseElement->StopMarquee(mulvisualitem::KMulDetail);
       
   322     	   eventConsumed = EEventConsumed;
       
   323     	   break;
       
   324            }
       
   325         default: break;
       
   326         }  
       
   327     return eventConsumed;
       
   328     }
       
   329 
       
   330 // ---------------------------------------------------------------------------
       
   331 // HandleKeyEvent
       
   332 // ---------------------------------------------------------------------------
       
   333 //  
       
   334 AlfEventStatus MulCoverFlowControl::HandleKeyEvent( const TAlfEvent& aEvent )
       
   335     {
       
   336     MUL_LOG_ENTRY_EXIT("MUL:MulCoverFlowControl::HandleKeyEvent");
       
   337     AlfEventStatus eventConsumed = EEventNotHandled;
       
   338    	if( aEvent.Code() == EEventKey)
       
   339      	{
       
   340      	switch ( aEvent.KeyEvent().iCode )
       
   341 	        {
       
   342 	        case EKeyEnter:
       
   343             // Event when selection key is pressed .( key event )
       
   344 	        case EKeyDeviceA:
       
   345 	        case EKeyDevice3: 
       
   346 	            {
       
   347 	            if(aEvent.KeyEvent().iRepeats == 0)
       
   348 		            {
       
   349 		            if(TotalModelCount() <= 0 && mData->mBaseElement->IsEmptyText() )           
       
   350 			            {
       
   351 			            SetSelection(mData->mHighlightIndex);
       
   352 			            eventConsumed = EEventConsumed;
       
   353 			            }
       
   354 			        else if( TotalModelCount() > 0 )
       
   355 			        	{
       
   356 			        	SetSelection(mData->mHighlightIndex);
       
   357 			            eventConsumed = EEventConsumed;	
       
   358 			        	}
       
   359 			        break;	
       
   360 		            }
       
   361 	            }
       
   362 	        case EKeyRightArrow:
       
   363 	            {
       
   364 	            // Send event to inform that the Right Key is pressed
       
   365 				if (mData->mIsMirrored)
       
   366 					{
       
   367 					HandleNavigationEvent ( EEventScrollLeft );
       
   368 					}
       
   369 				else
       
   370 					{
       
   371 					HandleNavigationEvent ( EEventScrollRight );
       
   372 					}
       
   373 	            eventConsumed = EEventConsumed;
       
   374 	            break;
       
   375 	            }
       
   376 	        
       
   377 	        case EKeyLeftArrow:
       
   378 	            {
       
   379 	            // Send event to inform that the Left Key is pressed
       
   380 				if (mData->mIsMirrored)
       
   381 					{
       
   382 					HandleNavigationEvent ( EEventScrollRight );
       
   383 					}
       
   384 				else
       
   385 					{
       
   386 					HandleNavigationEvent ( EEventScrollLeft );
       
   387 					}
       
   388 	            eventConsumed = EEventConsumed;
       
   389 	            break;
       
   390 	            }
       
   391 	        case EKeyBackspace:
       
   392 	        //case EKeyDelete:
       
   393 	            {
       
   394 	            CAlfWidgetControl::processEvent( TAlfEvent( ETypeRemove,mData->mHighlightIndex));
       
   395 	            eventConsumed = EEventConsumed;
       
   396 	            break;
       
   397 	            }
       
   398 	        default:
       
   399 	            {
       
   400 	            break;
       
   401 	            }
       
   402 	     	}
       
   403     	}
       
   404         
       
   405    else if(aEvent.Code() == EEventKeyUp) 
       
   406 	   {
       
   407 	   mData->mNumberOfRepeatEvents = 0;
       
   408 	   switch ( aEvent.KeyEvent().iScanCode )
       
   409 	        {
       
   410 			case EStdKeyRightArrow:
       
   411 			case EStdKeyLeftArrow:
       
   412 				{
       
   413 				if(mData->mFastScroll)
       
   414 					{
       
   415 					HandleEnhancedStop();
       
   416 			   		eventConsumed = EEventConsumed;	
       
   417 					}				
       
   418 		   		break;
       
   419 				}
       
   420 			default:
       
   421 				{
       
   422 				break;	
       
   423 				}
       
   424 	        }
       
   425 	   }         
       
   426      
       
   427     return eventConsumed;
       
   428     }
       
   429 
       
   430 // ---------------------------------------------------------------------------	
       
   431 // HandleRepeatKeyEvent
       
   432 // ---------------------------------------------------------------------------
       
   433 //
       
   434 AlfEventStatus MulCoverFlowControl::HandleRepeatKeyEvent( const TAlfEvent& aEvent )
       
   435     {
       
   436     MUL_LOG_ENTRY_EXIT("MUL:MulCoverFlowControl::HandleHoldGestureEvents");
       
   437 
       
   438 	AlfEventStatus eventConsumed = EEventNotHandled;
       
   439    	if( aEvent.Code() == EEventKey)
       
   440      	{
       
   441      	switch ( aEvent.KeyEvent().iCode )
       
   442 	        {
       
   443 	        case EKeyRightArrow:
       
   444 	            {
       
   445 				if (mData->mIsMirrored)
       
   446 					{
       
   447 					HandleFastScrollWithKeyEvents(1);
       
   448 					}
       
   449 				else
       
   450 					{
       
   451 					HandleFastScrollWithKeyEvents(-1);
       
   452 					}
       
   453 	            eventConsumed = EEventConsumed;
       
   454 	            break;
       
   455 	            }
       
   456 	        
       
   457 	        case EKeyLeftArrow:
       
   458 	            {
       
   459 				if (mData->mIsMirrored)
       
   460 					{
       
   461 					HandleFastScrollWithKeyEvents(-1);
       
   462 					}
       
   463 				else
       
   464 					{
       
   465 					HandleFastScrollWithKeyEvents(1);
       
   466 					}
       
   467 	            eventConsumed = EEventConsumed;
       
   468 	            break;
       
   469 	            }
       
   470 	        default:
       
   471 	            {
       
   472 	            break;
       
   473 	            }
       
   474 	     	}
       
   475     	}
       
   476 	return eventConsumed;
       
   477     }
       
   478 
       
   479 // ---------------------------------------------------------------------------	
       
   480 // HandleFastScrollWithKeyEvents
       
   481 // ---------------------------------------------------------------------------
       
   482 //
       
   483 void MulCoverFlowControl::HandleFastScrollWithKeyEvents(int aDirection)
       
   484     {
       
   485     MUL_LOG_ENTRY_EXIT("MUL:MulCoverFlowControl::HandleFastScrollWithKeyEvents");
       
   486     mData->mNumberOfRepeatEvents++;
       
   487     if(mData->mNumberOfRepeatEvents == 1 )
       
   488         {
       
   489         CAlfWidgetControl::processEvent( TAlfEvent( ETypeFastScroll,EScrollStart ));
       
   490 		mData->mFastScroll = true;
       
   491 		mCoverFlowAo->StartMoving(1, aDirection,true,200);	
       
   492         }
       
   493     else if(mData->mNumberOfRepeatEvents == KNumberOfRepeatsForMediumSpeed && mData->mFastScroll )
       
   494         {
       
   495         mCoverFlowAo->StartMoving(1, aDirection,true,150);	
       
   496         }
       
   497     else if(mData->mNumberOfRepeatEvents == KNumberOfRepeatsForFastSpeed && mData->mFastScroll )
       
   498         {
       
   499         mCoverFlowAo->StartMoving(1, aDirection,true,100);	
       
   500         }
       
   501     }      
       
   502     
       
   503 // ---------------------------------------------------------------------------
       
   504 // HandleNavigationEvent
       
   505 // ---------------------------------------------------------------------------
       
   506 //
       
   507 void MulCoverFlowControl::HandleNavigationEvent( int aEvent )
       
   508 	{
       
   509 	MUL_LOG_ENTRY_EXIT("MUL:MulCoverFlowControl::HandleNavigationEvent");
       
   510 	
       
   511 	// During bounce ignore all the events
       
   512 	if (mData->mBounceInProgress)
       
   513 		{
       
   514 		return;	
       
   515 		}
       
   516 		
       
   517 	int highlightIndex = mData->mHighlightIndex;
       
   518 	int totalcount = TotalModelCount();
       
   519 	if(totalcount <= 0 && highlightIndex == -1 )
       
   520 		{
       
   521 		return;
       
   522 		}
       
   523 	//stop marquee if the navigation is happening.
       
   524 	if(mData->mBaseElement->IsTextVisibile())
       
   525 	    {
       
   526 	    mData->mBaseElement->StopMarquee(mulvisualitem::KMulTitle);
       
   527 	    mData->mBaseElement->StopMarquee(mulvisualitem::KMulDetail);
       
   528 	    }
       
   529 	Env().CancelCustomCommands(this);
       
   530 	
       
   531 	//Update the highlight index
       
   532 	switch( aEvent )
       
   533 		{
       
   534 		case EEventScrollRight: 
       
   535 			{
       
   536 			// boundary check
       
   537 			if( highlightIndex == totalcount - 1 )
       
   538 				{
       
   539 				if( !mData->mBounceInProgress && !mData->mDontBounce)
       
   540 					{
       
   541 					mData->mBounceInProgress = true;
       
   542 					mData->mBaseElement->StartBounce(KBounceRight);
       
   543 					}
       
   544 				else
       
   545 					{
       
   546 					mData->mBounceInProgress = false;
       
   547 					mData->mDontBounce = false;
       
   548 					highlightIndex = 0;	
       
   549 					}
       
   550 				}
       
   551 			else 
       
   552 				{
       
   553 				highlightIndex++;
       
   554 				}
       
   555 				
       
   556 			mData->mBaseElement->SetScrollDir(EItemScrollRight);	
       
   557 			}
       
   558 		break;
       
   559 		
       
   560 		case EEventScrollLeft:
       
   561 			{
       
   562 			//boundary check
       
   563 			if( highlightIndex == 0 )
       
   564 				{
       
   565 				if( !mData->mBounceInProgress && !mData->mDontBounce)
       
   566 					{
       
   567 					mData->mBounceInProgress = true;
       
   568 				    mData->mBaseElement->StartBounce(KBounceLeft);
       
   569 					}
       
   570 				else
       
   571 					{
       
   572 					mData->mBounceInProgress = false;
       
   573 					mData->mDontBounce = false;
       
   574 					highlightIndex = totalcount - 1;	
       
   575 					}
       
   576 				}
       
   577 			else
       
   578 				{
       
   579 				highlightIndex--;
       
   580 				}	
       
   581 			}
       
   582 		mData->mBaseElement->SetScrollDir(EItemScrollLeft);	
       
   583 		break;
       
   584 		}
       
   585 		
       
   586 	// to handle bounce checks
       
   587 	if( !mData->mBounceInProgress )	
       
   588 		{ 
       
   589 		DoSetFocusIndex( highlightIndex ); 	
       
   590 		SetSliderTickPosition();
       
   591 		}	   
       
   592 	}
       
   593 // ---------------------------------------------------------------------------
       
   594 // SendEventToBaseElement
       
   595 // ---------------------------------------------------------------------------
       
   596 //
       
   597 void MulCoverFlowControl::SendEventToBaseElement( const TAlfEvent& aEvent )
       
   598     {
       
   599     MUL_LOG_ENTRY_EXIT("MUL:MulCoverFlowControl::SendEventToBaseElement");
       
   600     mData->mBaseElement->offerEvent(  *this, aEvent);
       
   601     }
       
   602 
       
   603 //----------------------------Highlight and Selection API's -----------------
       
   604 
       
   605 // ---------------------------------------------------------------------------
       
   606 // SetHighlightIndex
       
   607 // ---------------------------------------------------------------------------
       
   608 //          
       
   609 void MulCoverFlowControl::SetHighlightIndex( int aIndex, bool aUpdateSlider)
       
   610     {
       
   611     MUL_LOG_ENTRY_EXIT("MUL:MulCoverFlowControl::SetHighlightIndex");
       
   612     // Throw Out of Bound Exception if index is negative
       
   613    __MUL_ASSERT (aIndex > -1 && aIndex < TotalModelCount(), KOutOfBound); 
       
   614     //set the highlight in model
       
   615     if(aIndex > mData->mHighlightIndex)
       
   616         {
       
   617         mData->mBaseElement->SetScrollDir(EItemScrollRight);	    
       
   618         }
       
   619     else
       
   620         {
       
   621         mData->mBaseElement->SetScrollDir(EItemScrollLeft);    
       
   622         }    
       
   623     DoSetFocusIndex( aIndex );  
       
   624     if (aUpdateSlider)
       
   625         {
       
   626         SetSliderTickPosition();	
       
   627         }
       
   628     }   
       
   629 // ---------------------------------------------------------------------------
       
   630 // DoSetFocusIndex
       
   631 // ---------------------------------------------------------------------------
       
   632 //  
       
   633 void MulCoverFlowControl::DoSetFocusIndex( int aNewIndex, int aAnimationTime )
       
   634     {
       
   635     MUL_LOG_ENTRY_EXIT("MUL:MulCoverFlowControl::DoSetFocusIndex");
       
   636     
       
   637     if(aNewIndex < 0 )
       
   638 	    {
       
   639 	    return;	
       
   640 	    }
       
   641 
       
   642     int oldindex = mData->mHighlightIndex;
       
   643     IMulModelAccessor* accessor = static_cast<IMulModelAccessor*>(widget()->model());
       
   644     if(accessor)
       
   645 	    {
       
   646 	    if( oldindex == aNewIndex )
       
   647 	        {
       
   648             accessor->SetHighlight( aNewIndex ); 
       
   649             
       
   650             // When one item case to cancel the drag effect
       
   651             mData->mBaseElement->StopDoodling(200);            
       
   652 	        return;
       
   653 	        }
       
   654 	    // handling of cancelling bounce in 2 items case
       
   655 	    if(TotalModelCount() == 2)
       
   656 		    {
       
   657 		    if((mData->mBaseElement->ScrollDir() == EItemScrollRight && aNewIndex == 1 && oldindex == 2)||
       
   658 		    	(mData->mBaseElement->ScrollDir() == EItemScrollLeft && aNewIndex == 2 && oldindex == 1))
       
   659 			    {
       
   660 			    mData->mBaseElement->StopDoodling(200); 
       
   661 			    return;	
       
   662 			    }
       
   663 		    }
       
   664 	 
       
   665 	    accessor->SetHighlight( aNewIndex ); 
       
   666 	    accessor->ScrollWindow( WindowTop(aNewIndex) );  
       
   667 
       
   668 	    // Set the new focused item 
       
   669 	    mData->mHighlightIndex = aNewIndex; 
       
   670 	     
       
   671 	   // Throw Out of Bound Exception if index is negative
       
   672 	   __MUL_ASSERT( mData->mHighlightIndex > -1 , KOutOfBound ); 
       
   673 	   mData->mBaseElement->offerEvent(*this,TAlfEvent(ETypeHighlight,aAnimationTime));
       
   674 	    
       
   675 	    if( mData->mIsWidgetVisible )
       
   676 	        {
       
   677 	        // If the widget is in hidden mode no event will be sent to the application/client
       
   678 	        CAlfWidgetControl::processEvent( TAlfEvent( ETypeHighlight,mData->mHighlightIndex));
       
   679 	        }
       
   680 	    }
       
   681     }
       
   682 
       
   683 // ----------------------------------------------------------------------------
       
   684 // SetSelection
       
   685 // ----------------------------------------------------------------------------
       
   686 //
       
   687 void MulCoverFlowControl::SetSelection(int aHighlight)    
       
   688     {
       
   689     MUL_LOG_ENTRY_EXIT("MUL:MulCoverFlowControl::SetSelection");
       
   690     CAlfWidgetControl::processEvent ( TAlfEvent ( ETypeSelect, aHighlight));
       
   691     }
       
   692 
       
   693 // ---------------------------------------------------------------------------
       
   694 // HighlightIndex
       
   695 // ---------------------------------------------------------------------------
       
   696 //  
       
   697 int MulCoverFlowControl::HighlightIndex()
       
   698     {
       
   699     MUL_LOG_ENTRY_EXIT("MUL:MulCoverFlowControl::HighlightIndex");
       
   700     return mData->mHighlightIndex; 
       
   701     }  
       
   702       
       
   703 // ---------------------------------------------------------------------------
       
   704 // SetSliderTickPosition
       
   705 // ---------------------------------------------------------------------------
       
   706 //
       
   707 void MulCoverFlowControl::SetSliderTickPosition( )
       
   708     {
       
   709     MUL_LOG_ENTRY_EXIT("MUL:MulCoverFlowControl::SetSliderTickPosition");
       
   710     if (mData->mCoverFlow2DTemplate->IsSliderVisible())
       
   711 	    {
       
   712 	    IMulSliderModel* mulSliderModel = GetSliderModel();	
       
   713 	    if( mulSliderModel && mData->mHighlightIndex >= KInitialvalueZero )
       
   714 	        {
       
   715 	        mulSliderModel->SetPrimaryValue( mData->mHighlightIndex );   
       
   716 	        }
       
   717 	    }
       
   718     }
       
   719   
       
   720 //----------------------Model Change Related API's----------------------------
       
   721 // ----------------------------------------------------------------------------
       
   722 // ModelStateChanged
       
   723 // ----------------------------------------------------------------------------
       
   724 //
       
   725 void MulCoverFlowControl::ModelStateChanged( TMulChangedState aState, IMulVariantType& aData  )
       
   726     {  
       
   727     MUL_LOG_ENTRY_EXIT("MUL:MulCoverFlowControl::ModelStateChanged");
       
   728     switch( aState )
       
   729         {
       
   730         case EItemUpdated:
       
   731         	{
       
   732         	int index = aData.integer();
       
   733         	if(TotalModelCount() < 2*mData->mNumVisibleItem+1)
       
   734 	        	{
       
   735 	        	HandleLessItemsUpdate(index);	
       
   736 	        	}
       
   737         	else
       
   738 	        	{
       
   739 	        	int relativeIndex = 0;
       
   740 	        	if (IsIndexInVisibleWindow(index, relativeIndex))
       
   741 		        	{
       
   742 		        	UpdateCoverflowItem(index,relativeIndex);
       
   743 		        	mData->mBaseElement->CancelRotationOnUpdate(relativeIndex);
       
   744 		        	}	
       
   745 	        	}
       
   746         	break;	
       
   747         	} 
       
   748        case EHighlightChanged:
       
   749             {
       
   750             if (mData->mHighlightIndex != aData.integer())
       
   751 	            {
       
   752 	            mData->mHighlightIndex = aData.integer();
       
   753 	            IMulModelAccessor* accessor = static_cast<IMulModelAccessor*>(widget()->model());
       
   754                 if( mData->mHighlightIndex == 0 )
       
   755                 	{
       
   756                 	mData->mBaseElement->ShowEmptyText(false);
       
   757 				    }
       
   758                 if( mData->mHighlightIndex >= 0)
       
   759                     {
       
   760                     // the same things have to be done for highlight>0 and highlight = 0
       
   761                     // the only diff is at highlight 0 dont show empty text 
       
   762                     accessor->ScrollWindow(WindowTop(mData->mHighlightIndex));
       
   763 	           		mData->mBaseElement->UpdateVisuals();
       
   764 	           		mData->mBaseElement->SetCounterText();	
       
   765 	           		SetSliderTickPosition();
       
   766 				    }           		
       
   767                 else
       
   768                     {
       
   769                     // remove the visualisation and hide counter. 
       
   770                     mData->mBaseElement->RecycleIconVisuals();  
       
   771 	                mData->mBaseElement->ShowEmptyText( true );
       
   772                     }				
       
   773 	            }
       
   774             break;
       
   775             }
       
   776         case EItemsInserted:
       
   777             {
       
   778             HandleModelCountChange();
       
   779             break;
       
   780             }
       
   781         case EItemsRemoved:
       
   782         	{
       
   783         	HandleModelCountChange();
       
   784         	CAlfWidgetControl::processEvent( TAlfEvent( ETypeItemRemoved ));
       
   785         	break;
       
   786         	}
       
   787         
       
   788 		}                                  
       
   789     }
       
   790 
       
   791 // ---------------------------------------------------------------------------
       
   792 // HandleLessItemsUpdate 
       
   793 // ---------------------------------------------------------------------------
       
   794 //    
       
   795 void MulCoverFlowControl::HandleLessItemsUpdate(int aIndex)
       
   796 	{
       
   797 	MUL_LOG_ENTRY_EXIT("MUL:MulCoverFlowControl::HandleLessItemsUpdate");
       
   798 
       
   799 	int highlight = mData->mHighlightIndex;
       
   800     IMulModelAccessor* accessor = static_cast<IMulModelAccessor*>(widget()->model());
       
   801     if(accessor)
       
   802         {
       
   803         highlight = accessor->Highlight();
       
   804         }
       
   805     
       
   806 	if(aIndex == highlight)
       
   807 		{
       
   808 		UpdateCoverflowItem(aIndex,mData->mNumVisibleItem);
       
   809 		if(mData->mNumVisibleItem != 1 && TotalModelCount() == 3)	
       
   810 			{
       
   811 			UpdateCoverflowItem(aIndex,mData->mNumVisibleItem + 3);
       
   812 			UpdateCoverflowItem(aIndex,mData->mNumVisibleItem - 3);	
       
   813 			}
       
   814 		}
       
   815 	else 
       
   816 		{
       
   817 		// fulscreen tempalte and 2d in portrait
       
   818 		if(mData->mNumVisibleItem == 1)	
       
   819 			{
       
   820 			UpdateCoverflowItem(aIndex,mData->mNumVisibleItem+1);
       
   821 			UpdateCoverflowItem(aIndex,mData->mNumVisibleItem-1);				
       
   822 			}
       
   823 		else
       
   824 			{
       
   825 			// 2d template landscape mode
       
   826 			if(TotalModelCount() == 2)
       
   827 				{
       
   828 				UpdateCoverflowItem(aIndex,mData->mNumVisibleItem+(aIndex - highlight));	
       
   829 				}
       
   830 			else
       
   831 				{
       
   832 				int relativeIndex = (aIndex - highlight) + mData->mNumVisibleItem;
       
   833 				if(relativeIndex >= 0 && relativeIndex < 2*mData->mNumVisibleItem+1)
       
   834 					{
       
   835 					UpdateCoverflowItem(aIndex,relativeIndex);						
       
   836 					}
       
   837 				relativeIndex = relativeIndex + TotalModelCount();
       
   838 				if(relativeIndex >= 0 && relativeIndex < 2*mData->mNumVisibleItem+1)
       
   839 					{
       
   840 					UpdateCoverflowItem(aIndex,relativeIndex);	
       
   841 					}
       
   842 								
       
   843 				relativeIndex = mData->mNumVisibleItem - (TotalModelCount() - aIndex + highlight);
       
   844 				if(relativeIndex >= 0 && relativeIndex < 2*mData->mNumVisibleItem+1)
       
   845 					{
       
   846 					UpdateCoverflowItem(aIndex,relativeIndex);					
       
   847 					}
       
   848 				relativeIndex = relativeIndex - TotalModelCount();
       
   849 				if(relativeIndex >= 0 && relativeIndex < 2*mData->mNumVisibleItem+1)
       
   850 					{
       
   851 					UpdateCoverflowItem(aIndex,relativeIndex);	
       
   852 					}					
       
   853 				}
       
   854 			}
       
   855 		}
       
   856 	}
       
   857 
       
   858 // ---------------------------------------------------------------------------
       
   859 // IsIndexInVisibleWindow 
       
   860 // ---------------------------------------------------------------------------
       
   861 //
       
   862 bool MulCoverFlowControl::IsIndexInVisibleWindow(const int aIndex, int& aRelativeIndex)
       
   863     {
       
   864     MUL_LOG_ENTRY_EXIT("MUL:MulCoverFlowControl::IsIndexInVisibleWindow");
       
   865 
       
   866 	int totalVisual = TotalModelCount();
       
   867     int noOfVisuals = mData->mNumVisibleItem; 
       
   868     int highlightRelativeIndex = mData->mNumVisibleItem;
       
   869     int highlight = mData->mHighlightIndex;
       
   870     IMulModelAccessor* accessor = static_cast<IMulModelAccessor*>(widget()->model());
       
   871     if(accessor)
       
   872         {
       
   873         highlight = accessor->Highlight();
       
   874         }
       
   875 
       
   876 	int leftIndex = highlight - noOfVisuals;
       
   877 	int rightIndex = highlight + noOfVisuals;
       
   878     
       
   879  	if (leftIndex >= 0)
       
   880 	 	{
       
   881 	 	if ((aIndex <= highlight) && (aIndex >= leftIndex))
       
   882 		 	{
       
   883 		 	aRelativeIndex = highlightRelativeIndex - (highlight - aIndex);
       
   884 		 	return true;	
       
   885 		 	}
       
   886 	 	}
       
   887 	else
       
   888 		{
       
   889 		if (aIndex <= highlight)
       
   890 			{
       
   891 			aRelativeIndex = highlightRelativeIndex - (highlight - aIndex);
       
   892 			return true;	
       
   893 			}
       
   894 		else
       
   895 			{
       
   896 			leftIndex = totalVisual + leftIndex ;
       
   897 			if (aIndex >= leftIndex)
       
   898 				{
       
   899 				aRelativeIndex = highlightRelativeIndex - noOfVisuals +	(aIndex - leftIndex);
       
   900 				return true;
       
   901 				}
       
   902 			}	
       
   903 		}
       
   904  
       
   905  	if (rightIndex < totalVisual)
       
   906 	 	{
       
   907 	 	if ((aIndex >= highlight) && (aIndex <= rightIndex))
       
   908 		 	{
       
   909 		 	aRelativeIndex = highlightRelativeIndex + (aIndex - highlight);
       
   910 		 	return true;	
       
   911 		 	}
       
   912 	 	}
       
   913 	else
       
   914 		{
       
   915 		if (aIndex >= highlight)
       
   916 			{
       
   917 			aRelativeIndex = highlightRelativeIndex + (aIndex - highlight);
       
   918 			return true;	
       
   919 			}
       
   920 		rightIndex = rightIndex - totalVisual;
       
   921 		if (aIndex <= rightIndex)
       
   922 			{
       
   923 			aRelativeIndex = highlightRelativeIndex + noOfVisuals - (rightIndex - aIndex);
       
   924 			return true;	
       
   925 			}
       
   926 		}
       
   927  
       
   928 	return false;
       
   929     }
       
   930         
       
   931         
       
   932 // ---------------------------------------------------------------------------
       
   933 // RelativeToAbsolute
       
   934 // ---------------------------------------------------------------------------
       
   935 //
       
   936 int MulCoverFlowControl::RelativeToAbsolute(const int aRelativeIndex)
       
   937     {
       
   938     MUL_LOG_ENTRY_EXIT("MUL:MulCoverFlowControl::RelativeToAbsolute");
       
   939     int highlightRelativeIndex = mData->mNumVisibleItem;
       
   940     int absolute = -1;
       
   941     int totalVisuals = TotalModelCount();
       
   942     
       
   943     int highlight = mData->mHighlightIndex;
       
   944     IMulModelAccessor* accessor = static_cast<IMulModelAccessor*>(widget()->model());
       
   945     if(accessor)
       
   946         {
       
   947         highlight = accessor->Highlight();
       
   948         }
       
   949     
       
   950     if(totalVisuals <= 0)
       
   951 	    {
       
   952 	    // absolute index is always -1, so no need of any calculations
       
   953 	    }
       
   954     else if(totalVisuals < 2*mData->mNumVisibleItem + 1)
       
   955 	    {
       
   956 	    if(aRelativeIndex == highlightRelativeIndex)
       
   957 			{
       
   958 			absolute = 	highlight;
       
   959 			}
       
   960 		else
       
   961 			{
       
   962 			if(mData->mNumVisibleItem == 1)
       
   963 				{
       
   964 				if (totalVisuals == 1)
       
   965 				    {
       
   966 				    absolute = -1;
       
   967 				    }
       
   968 				else if(totalVisuals == 2)
       
   969 					{
       
   970 					absolute = highlight + 1;
       
   971 					absolute = absolute >= totalVisuals ? 0 : absolute;
       
   972 					}
       
   973 				}
       
   974 			else
       
   975 				{
       
   976 				if (totalVisuals == 1)
       
   977 				    {
       
   978 				    absolute = -1;
       
   979 				    }
       
   980 				else if(totalVisuals == 2)
       
   981 					{
       
   982 					absolute = highlight + (aRelativeIndex - highlightRelativeIndex);
       
   983 					absolute = absolute >= totalVisuals ? -1 : absolute;
       
   984 					}
       
   985 				else // totalvisuals > 3
       
   986 					{
       
   987 					if(aRelativeIndex - highlightRelativeIndex > 0)
       
   988 						{
       
   989 						absolute = highlight + aRelativeIndex - highlightRelativeIndex;	
       
   990 						}
       
   991 					else
       
   992 						{
       
   993 						absolute = highlight + aRelativeIndex - highlightRelativeIndex
       
   994 							+ TotalModelCount();	
       
   995 						}					
       
   996 					absolute = absolute >= totalVisuals ? absolute - totalVisuals : absolute;
       
   997 					}
       
   998 				}
       
   999 			}
       
  1000 	    }
       
  1001 	else
       
  1002 		{
       
  1003 		if(aRelativeIndex == highlightRelativeIndex)
       
  1004 			{
       
  1005 			absolute = highlight;
       
  1006 			}
       
  1007 		else if (aRelativeIndex > highlightRelativeIndex)
       
  1008 		    {
       
  1009 		    absolute = highlight + (aRelativeIndex - highlightRelativeIndex);
       
  1010 		    absolute = absolute >= totalVisuals ? (absolute - totalVisuals) : absolute;	
       
  1011 		    }
       
  1012 		else
       
  1013 			{
       
  1014 		    absolute = highlight - (highlightRelativeIndex - aRelativeIndex);
       
  1015 		    absolute = absolute <0 ? (totalVisuals + absolute) : absolute;
       
  1016 		    absolute = absolute > totalVisuals - 1 ? -1 : absolute;	    
       
  1017 			}	
       
  1018 		}    
       
  1019     return absolute;
       
  1020     }
       
  1021 
       
  1022         
       
  1023 // ---------------------------------------------------------------------------
       
  1024 // TotalModelCount
       
  1025 // ---------------------------------------------------------------------------
       
  1026 //  
       
  1027 int MulCoverFlowControl::TotalModelCount()
       
  1028     {
       
  1029     MUL_LOG_ENTRY_EXIT("MUL:MulCoverFlowControl::TotalModelCount");
       
  1030     
       
  1031     IMulModelAccessor* accessor = static_cast<IMulModelAccessor*>(widget()->model());
       
  1032     if(accessor)
       
  1033         {
       
  1034         return accessor->CurrentItemCount();
       
  1035         }
       
  1036 	return -1;    
       
  1037     }
       
  1038 
       
  1039 // ---------------------------------------------------------------------------
       
  1040 // HandleModelCountChange
       
  1041 // ---------------------------------------------------------------------------
       
  1042 //
       
  1043 void MulCoverFlowControl::HandleModelCountChange()
       
  1044 	{
       
  1045 	MUL_LOG_ENTRY_EXIT("MUL:MulCoverFlowControl::HandleModelCountChange");
       
  1046     IMulModelAccessor* accessor = static_cast<IMulModelAccessor*>(widget()->model());
       
  1047     if(accessor)
       
  1048 	    {
       
  1049 	    if(TotalModelCount() < (2*mData->mNumVisibleItem + 1))
       
  1050 	    	{
       
  1051 	    	mData->mBaseElement->UpdateVisuals();
       
  1052 	    	}
       
  1053 		mData->mBaseElement->UpdateSliderTick( TotalModelCount() );
       
  1054 		mData->mBaseElement->SetCounterText();
       
  1055 	    }
       
  1056 	}
       
  1057 
       
  1058 // ---------------------------------------------------------------------------
       
  1059 // modelAccessor
       
  1060 // ---------------------------------------------------------------------------
       
  1061 //  
       
  1062 IMulModelAccessor* MulCoverFlowControl::ModelAccessor()
       
  1063     {
       
  1064     MUL_LOG_ENTRY_EXIT("MUL:MulCoverFlowControl::ModelAccessor");
       
  1065     if(widget())
       
  1066     	{
       
  1067     	return static_cast<IMulModelAccessor*>(widget()->model());
       
  1068     	}    
       
  1069     return NULL;    
       
  1070     }
       
  1071 
       
  1072 // ---------------------------------------------------------------------------
       
  1073 // ModelChanged
       
  1074 // ---------------------------------------------------------------------------
       
  1075 //
       
  1076 void MulCoverFlowControl::ModelChanged( IMulModelAccessor* aAccessor )
       
  1077 	{
       
  1078 	MUL_LOG_ENTRY_EXIT("MUL:MulCoverFlowControl::ModelChanged");
       
  1079 	Env().CancelCustomCommands(this);
       
  1080 	// update the highlight index as well as the no of item.
       
  1081 	mData->mHighlightIndex = aAccessor->Highlight();
       
  1082 
       
  1083 	CAlfLayout* main = (CAlfLayout*) mData->mBaseElement->findVisual( KMainLayoutIndex );
       
  1084 	TSize mainSize = main->Size().Target().AsSize();
       
  1085 	int width = mainSize.iWidth;
       
  1086 	int height = mainSize.iHeight;
       
  1087 
       
  1088 	if( width == 0 && height == 0 )
       
  1089 		{
       
  1090 		return;
       
  1091 		}
       
  1092 	else
       
  1093 		{
       
  1094 		// @todo check if we are setting a new model with the same old template, 
       
  1095 		// then should we call CreateTemplateElement
       
  1096 		mData->mScreenWidth = width;
       
  1097     	mData->mScreenHeight = height;
       
  1098 		CreateTemplateElement(aAccessor->Template());
       
  1099 		mData->mBaseElement->CreateAndInitializeVisuals(); 
       
  1100 		aAccessor->SetVisibleWindow( 2 * mData->mCoverFlow2DTemplate->MaxVisibleCount() + 1
       
  1101 		            ,WindowTop(mData->mHighlightIndex));
       
  1102 		// For setting or clearing empty text if depending on the new modle count
       
  1103 		SendEventToBaseElement( TAlfEvent( EEventWidgetInitialized ) );
       
  1104 		}
       
  1105 	}
       
  1106 		
       
  1107 
       
  1108 
       
  1109 //-----------------Template Element Creation API's --------------------------
       
  1110 
       
  1111 // ---------------------------------------------------------------------------
       
  1112 // CreateTemplateElement
       
  1113 // ---------------------------------------------------------------------------
       
  1114 //
       
  1115 void MulCoverFlowControl::CreateTemplateElement( mulwidget::TLogicalTemplate aTemplateName)
       
  1116 	{
       
  1117 	MUL_LOG_ENTRY_EXIT("MUL:MulCoverFlowControl::CreateTemplateElement");
       
  1118 	if (aTemplateName == mulwidget::KTemplate1)
       
  1119 		{
       
  1120 		mData->mCoverFlow2DTemplate.reset( new(EMM) MulCoverFlowTemplate1(*this, *mData->mBaseElement));
       
  1121 		}
       
  1122 	else if(aTemplateName == mulwidget::KTemplate4)
       
  1123 		{
       
  1124 		mData->mCoverFlow2DTemplate.reset( new(EMM) MulCoverFlowTemplate4(*this, *mData->mBaseElement));
       
  1125 		}
       
  1126 	else
       
  1127 		{
       
  1128 		// Invalid template
       
  1129 		return;
       
  1130 		}
       
  1131     mData->mCoverFlow2DTemplate->CreateVisualisation(IsLandscape());
       
  1132 	// set holding mode to gesture helper.
       
  1133 	SetHoldingEnabled(); 
       
  1134 	}
       
  1135 
       
  1136 
       
  1137     
       
  1138 //--------------Orientation Change Related API's----------------------------- 
       
  1139 // ---------------------------------------------------------------------------
       
  1140 // VisualLayoutUpdated
       
  1141 // ---------------------------------------------------------------------------
       
  1142 //		
       
  1143 void MulCoverFlowControl::VisualLayoutUpdated (CAlfVisual& aVisual)
       
  1144     {
       
  1145     MUL_LOG_ENTRY_EXIT("MUL:MulCoverFlowControl::VisualLayoutUpdated");
       
  1146         
       
  1147     TSize topLayoutSize = aVisual.Size().Target().AsSize(); ;
       
  1148     int height = topLayoutSize.iHeight;
       
  1149     int width  = topLayoutSize.iWidth;
       
  1150     
       
  1151  	// to avoid unnecessary visual layout updated calls .
       
  1152  	// in order to check if the orientation has changed really or not this is done .
       
  1153     if( mData->mScreenWidth == width && height == mData->mScreenHeight  )
       
  1154         {
       
  1155         return;
       
  1156         }
       
  1157     
       
  1158     mData->mScreenWidth = width;
       
  1159     mData->mScreenHeight = height;
       
  1160         
       
  1161 	
       
  1162 	IMulModelAccessor* accessor = ModelAccessor();
       
  1163     if(IsLandscape() == mData->mIsLandscape)
       
  1164         {  
       
  1165         if(accessor)
       
  1166             {
       
  1167             CreateTemplateElement(accessor->Template());
       
  1168             mData->mBaseElement->CreateAndInitializeVisuals(); 
       
  1169             accessor->SetVisibleWindow( 2 * mData->mCoverFlow2DTemplate->MaxVisibleCount() + 1
       
  1170                         ,WindowTop(mData->mHighlightIndex));
       
  1171             // For setting or clearing empty text if depending on the new modle count
       
  1172             SendEventToBaseElement( TAlfEvent( EEventWidgetInitialized ) );
       
  1173             }
       
  1174         else
       
  1175         	{
       
  1176         	// For null model
       
  1177 		    // reset the coverflow 2d template to NULL
       
  1178 		    mData->mCoverFlow2DTemplate.reset(NULL);
       
  1179         	}
       
  1180         }
       
  1181     else
       
  1182         { 
       
  1183         mData->mIsLandscape = IsLandscape();
       
  1184     	
       
  1185     	if(!accessor)
       
  1186     		{
       
  1187     		mData->mBaseElement->SetDefaultSize(TSize(mData->mScreenWidth,mData->mScreenHeight));
       
  1188     		return; 
       
  1189     		}
       
  1190           
       
  1191         mData->mBaseElement->OrientationChange();
       
  1192     	// enable or disable hold events depending on whether ECF enabled
       
  1193     	SetHoldingEnabled();
       
  1194         }
       
  1195         
       
  1196     }
       
  1197 	    
       
  1198 // ---------------------------------------------------------------------------
       
  1199 // RecycleVisuals
       
  1200 // ---------------------------------------------------------------------------
       
  1201 //   
       
  1202 void MulCoverFlowControl::RecycleVisuals()
       
  1203     {
       
  1204     MUL_LOG_ENTRY_EXIT("MUL:MulCoverFlowControl::RecycleVisuals");
       
  1205     // reset the coverflow 2d template to NULL
       
  1206     mData->mCoverFlow2DTemplate.reset(NULL);
       
  1207     
       
  1208     if(mData->mBaseElement)
       
  1209         {
       
  1210         mData->mBaseElement->RecycleIconVisuals();
       
  1211         mData->mHighlightIndex = -1;
       
  1212         }
       
  1213     }  
       
  1214 
       
  1215 //--------------------------- Gesture ----------------------------------------
       
  1216 
       
  1217 // ---------------------------------------------------------------------------
       
  1218 // SetHoldingEnabled
       
  1219 // ---------------------------------------------------------------------------
       
  1220 // 
       
  1221 void MulCoverFlowControl::SetHoldingEnabled()
       
  1222 	{
       
  1223 	MUL_LOG_ENTRY_EXIT("MUL:MulCoverFlowControl::SetHoldingEnabled");
       
  1224 
       
  1225 	mHelper->SetHoldingEnabled(EnhancedModeCondition());	
       
  1226 	}
       
  1227 
       
  1228 // ---------------------------------------------------------------------------
       
  1229 // SetDoubleTapEnabled
       
  1230 // ---------------------------------------------------------------------------
       
  1231 // 
       
  1232 void MulCoverFlowControl::SetDoubleTapEnabled( bool aValue)
       
  1233 	{
       
  1234 	MUL_LOG_ENTRY_EXIT("MUL:MulCoverFlowControl::SetDoubleTapEnabled");
       
  1235 
       
  1236 	mHelper->SetDoubleTapEnabled( aValue );	
       
  1237 	}
       
  1238 	
       
  1239 // ---------------------------------------------------------------------------
       
  1240 // HandleGestureL
       
  1241 // ---------------------------------------------------------------------------
       
  1242 //    
       
  1243 void MulCoverFlowControl::HandleGestureL( const MGestureEvent& aEvent )
       
  1244     {
       
  1245     MUL_LOG_ENTRY_EXIT("MUL:MulCoverFlowControl::HandleGestureL");
       
  1246 	if(aEvent.IsHolding())
       
  1247 		{
       
  1248 	    HandleHoldGestureEvents(aEvent);	
       
  1249 		}
       
  1250 	else
       
  1251 		{
       
  1252 		HandleNormalGestureEvents(aEvent);
       
  1253 		}
       
  1254     }
       
  1255 
       
  1256 // ---------------------------------------------------------------------------
       
  1257 // HandleNormalGestureEvents
       
  1258 // ---------------------------------------------------------------------------
       
  1259 //
       
  1260 void MulCoverFlowControl::HandleNormalGestureEvents( const MGestureEvent& aEvent )
       
  1261     {
       
  1262     MUL_LOG_ENTRY_EXIT("MUL:MulCoverFlowControl::HandleNormalGestureEvents");
       
  1263     
       
  1264     switch ( aEvent.Code(MGestureEvent::EAxisHorizontal) )
       
  1265         {
       
  1266         case EGestureStart:
       
  1267             {
       
  1268             SendFeedbackOnTouchDown(aEvent);
       
  1269             }
       
  1270             break;
       
  1271 		case EGestureDrag: // fall through
       
  1272 			{		
       
  1273 			MUL_LOG_INFO("MUL::MulCoverFlowControl:HandleNormalGestureEvents EGestureDrag");
       
  1274 			if(	aEvent.CurrentPos().iX > mData->mScreenWidth )
       
  1275 				{
       
  1276 				return;
       
  1277 				}
       
  1278 
       
  1279 			if(TotalModelCount() > 0 )
       
  1280 				{
       
  1281 				// if ui is on send event to applications	
       
  1282 				if( mData->mCoverFlow2DTemplate->IsUiOnOffFlagEnabled() && 
       
  1283 	    			(mData->mBaseElement->IsUiOnMode()) )
       
  1284 					{
       
  1285 					CAlfWidgetControl::processEvent( TAlfEvent( ETypeSwitchUiStateOnDrag ));	
       
  1286 					}
       
  1287 					
       
  1288 				if (mData->mBounceInProgress && TotalModelCount() > 2)
       
  1289 					{
       
  1290 					mData->mBounceInProgress = false;
       
  1291 					Env().CancelCustomCommands(this);
       
  1292 					// bounce canceled once .dont bounce again for the next swipe.
       
  1293 					mData->mDontBounce = true;	
       
  1294 					}
       
  1295 
       
  1296 				int distance =  aEvent.Distance().iX ;
       
  1297 				mData->mCurrGestureDir = distance;//CovertDistAnceToDirection(distance);				
       
  1298 				if (mData->mIsMirrored)
       
  1299 					{
       
  1300 					distance = -distance;
       
  1301 					}
       
  1302 				mData->mReferencePoint = aEvent.CurrentPos().iX - 10; //pointerDownPos + distanceTravelled/2;	
       
  1303 
       
  1304 				mData->mBaseElement->StartDoodling(distance);
       
  1305 				}
       
  1306 			break;
       
  1307 			}
       
  1308         
       
  1309         case EGestureTap:
       
  1310         	{
       
  1311         	MUL_LOG_INFO("MUL::MulCoverFlowControl:HandleNormalGestureEvents EGestureTap ");
       
  1312             HandleSingleTap(aEvent); 
       
  1313             mFeedback->InstantFeedback(ETouchFeedbackList);
       
  1314             break;   
       
  1315         	}
       
  1316         
       
  1317         case EGestureDoubleTap:
       
  1318            {
       
  1319            MUL_LOG_INFO("MUL::MulCoverFlowControl:HandleNormalGestureEvents EGestureDoubleTap ");
       
  1320            if(TotalModelCount() <= 0 )
       
  1321 	    		{
       
  1322 	    		//find out whether event should be sent on double tap or not 
       
  1323 	    		// in case of empty model and the feedback too.
       
  1324 	    		break; 
       
  1325 	    		}
       
  1326             MulDoubleTapData doubleTapData;
       
  1327             // Finding the visual which has been hit .
       
  1328             CAlfVisual* hitVisual = aEvent.Visual();           
       
  1329             if(hitVisual && (hitVisual->Tag() == KCoverflowIndicator) ) 
       
  1330                 {
       
  1331                 doubleTapData.mTapVisualIndex = mData->mHighlightIndex ;
       
  1332                 }
       
  1333             else
       
  1334                 {
       
  1335                 int hitVisualIndex = GetHitVisualIndex( hitVisual );           
       
  1336                 if( hitVisualIndex == -1 )
       
  1337                     {
       
  1338                     break; 
       
  1339                     }
       
  1340                 doubleTapData.mTapVisualIndex = hitVisualIndex;
       
  1341                 }
       
  1342             doubleTapData.mDoubleTapPoint = aEvent.CurrentPos();
       
  1343             
       
  1344             mFeedback->InstantFeedback(ETouchFeedbackList); 
       
  1345             CAlfWidgetControl::processEvent ( TAlfEvent ( ETypeDoubleTap,
       
  1346                     uint(&doubleTapData)));
       
  1347             break;  
       
  1348             }
       
  1349                            	
       
  1350         case EGestureUnknown :
       
  1351         	{
       
  1352         	MUL_LOG_INFO("MUL::MulCoverFlowControl:HandleNormalGestureEvents EGestureUnknown");
       
  1353         	if(TotalModelCount() > 0 )
       
  1354 	    		{
       
  1355 		    	// this will revert to the original position if gesture get cancelled
       
  1356 	        	// with some animation time.
       
  1357 	        	// @TODO animation time should be same as set by application.
       
  1358 	        	mData->mBaseElement->StopDoodling(200);
       
  1359 	    		}
       
  1360             break;
       
  1361         	}
       
  1362                     
       
  1363         case EGestureSwipeLeft:
       
  1364         	{
       
  1365         	MUL_LOG_INFO("MUL::MulCoverFlowControl:HandleNormalGestureEvents EGestureSwipeLeft");
       
  1366         	if(TotalModelCount() > 0 )
       
  1367 	    		{
       
  1368 	    		// do the calculations for changing teh higlight left or right depnding on last direction
       
  1369 			    // and the total direction moved.
       
  1370 			    int finalSwipeDirection = mData->mBaseElement->FinalSwipeDirection(
       
  1371 			    	TotalSwipeDistance(aEvent),EEventScrollRight);
       
  1372 
       
  1373 	    		HandleSwipe(finalSwipeDirection);
       
  1374 	    		}
       
  1375             break;
       
  1376         	}
       
  1377               
       
  1378         case EGestureSwipeRight:
       
  1379             {
       
  1380             MUL_LOG_INFO("MUL::MulCoverFlowControl:HandleNormalGestureEvents EGestureSwipeRight");
       
  1381             if(TotalModelCount() > 0 )
       
  1382 	    		{
       
  1383 			    int finalSwipeDirection = mData->mBaseElement->FinalSwipeDirection(
       
  1384 			    	TotalSwipeDistance(aEvent),EEventScrollLeft);
       
  1385 	    		
       
  1386 	    		HandleSwipe(finalSwipeDirection);
       
  1387 	    		}
       
  1388             break;
       
  1389             }
       
  1390         case EGestureMultiTouchStart:
       
  1391            {
       
  1392             MUL_LOG_INFO("MUL::MulCoverFlowControl:HandleNormalGestureEvents EGestureMultiTouchStart");
       
  1393             mData->mBaseElement->StopDoodling(0);
       
  1394             mFeedback->InstantFeedback(ETouchFeedbackMultiTouchRecognized);
       
  1395             break;
       
  1396           }
       
  1397         case EGestureMultiTouchReleased:
       
  1398             MUL_LOG_INFO("MUL::MulCoverFlowControl:HandleNormalGestureEvents EGestureMultiTouchReleased");
       
  1399             break;
       
  1400         case EGesturePinch:
       
  1401             MUL_LOG_INFO("MUL::MulCoverFlowControl:HandleNormalGestureEvents EGesturePinch");
       
  1402             CAlfWidgetControl::processEvent ( TAlfEvent ( ETypePinch,aEvent.PinchPercent()));
       
  1403             break;
       
  1404         case EGestureReleased:
       
  1405         	{
       
  1406         	 MUL_LOG_INFO("MUL::MulCoverFlowControl:HandleNormalGestureEvents EGestureReleased");
       
  1407         	 break;
       
  1408 			}
       
  1409         default:
       
  1410             break;
       
  1411         } // end of switch
       
  1412     }
       
  1413 
       
  1414 // ---------------------------------------------------------------------------
       
  1415 // TotalSwipeDistance
       
  1416 // ---------------------------------------------------------------------------
       
  1417 //
       
  1418 int MulCoverFlowControl::TotalSwipeDistance( const GestureHelper::MGestureEvent& aEvent )
       
  1419 	{
       
  1420 	MUL_LOG_ENTRY_EXIT("MUL:MulCoverFlowControl::TotalSwipeDistance");
       
  1421 	if(	aEvent.CurrentPos().iX > mData->mScreenWidth )
       
  1422 		{
       
  1423 		return aEvent.Distance().iX - (aEvent.CurrentPos().iX - mData->mScreenWidth);
       
  1424 		}
       
  1425 	return 	aEvent.Distance().iX;
       
  1426 	}
       
  1427 
       
  1428 // ---------------------------------------------------------------------------
       
  1429 // GetHitVisualIndex
       
  1430 // ---------------------------------------------------------------------------
       
  1431 //
       
  1432 int MulCoverFlowControl::GetHitVisualIndex( CAlfVisual* aHitVisual )
       
  1433     {
       
  1434     MUL_LOG_ENTRY_EXIT("MUL:MulCoverFlowControl::GetHitVisualIndex");
       
  1435     int visualIndex  = -1;
       
  1436         
       
  1437     if(!aHitVisual)
       
  1438 	    {
       
  1439 	    // no visual found
       
  1440 	    return -1;
       
  1441 	    }
       
  1442      #ifdef _DEBUG
       
  1443         const TDesC8& buffer = aHitVisual->Tag();
       
  1444     #endif
       
  1445 
       
  1446     if ((aHitVisual->Tag() != KCoverflowIcon))
       
  1447         {
       
  1448         visualIndex = -1;
       
  1449         }
       
  1450     else
       
  1451         {
       
  1452         if(mData->mNumVisibleItem > 1)
       
  1453 	        {
       
  1454     		CAlfLayout& iconFlow =mData->mBaseElement->FlowLayout( KIconFlowLayoutIndex );
       
  1455     		CAlfVisual* imgVisual = NULL;
       
  1456 	        for(int i=2; i<=4;i++)	
       
  1457 		        {
       
  1458 		        imgVisual = iconFlow.Visual(i).FindTag(KCoverflowIcon);
       
  1459 		        if (imgVisual == aHitVisual)
       
  1460 			        {
       
  1461 			        visualIndex = RelativeToAbsolute(i);	
       
  1462 			        break;
       
  1463 			        }
       
  1464 		        }
       
  1465 	        }
       
  1466 	    else
       
  1467 	    	{
       
  1468 	    	visualIndex = mData->mHighlightIndex;
       
  1469 	    	}
       
  1470         }
       
  1471     return visualIndex;
       
  1472     }
       
  1473 
       
  1474 
       
  1475 // ---------------------------------------------------------------------------
       
  1476 // HandleSingleTap
       
  1477 // ---------------------------------------------------------------------------
       
  1478 //  
       
  1479 void MulCoverFlowControl::HandleSingleTap(const MGestureEvent& aEvent) 
       
  1480     {
       
  1481     MUL_LOG_ENTRY_EXIT("MUL:MulCoverFlowControl::HandleSingleTap");
       
  1482 
       
  1483     if(TotalModelCount() <= 0 )
       
  1484         {
       
  1485         // in case of empty model and null model only when the empty text is set 
       
  1486         // then only the selection event should be sent to the applications.
       
  1487         if( mData->mBaseElement->IsEmptyText() )
       
  1488             {
       
  1489             SetSelection(-1);	
       
  1490             }
       
  1491         // In case of null model and empty model if the empty text is not set then no need to calculate
       
  1492         //the hit visual index . Doest serve any purpose.
       
  1493         }
       
  1494     else
       
  1495         {
       
  1496         // Finding the visual which has been hit .
       
  1497         CAlfVisual* hitVisual = aEvent.Visual();        	
       
  1498         if(hitVisual && (hitVisual->Tag() == KCoverflowIndicator) ) 
       
  1499             {
       
  1500             CAlfWidgetControl::processEvent( TAlfEvent( EVideoIconSelect ));
       
  1501             return;
       
  1502             }
       
  1503         int hitVisualIndex = GetHitVisualIndex( hitVisual );
       
  1504         if( hitVisualIndex > -1 )
       
  1505             {
       
  1506             if( hitVisualIndex == mData->mHighlightIndex )
       
  1507                 {
       
  1508                 SetSelection(mData->mHighlightIndex );
       
  1509                 }
       
  1510             else
       
  1511                 {
       
  1512                 //set the highlight in model
       
  1513 			    if(TotalModelCount() > 2 && hitVisualIndex == TotalModelCount()-1 
       
  1514 			    	&& mData->mHighlightIndex == 0)
       
  1515 				    {
       
  1516 				    HandleNavigationEvent ( EEventScrollLeft );	
       
  1517 				    }
       
  1518 				else if(TotalModelCount() > 2 && mData->mHighlightIndex == TotalModelCount()-1 
       
  1519 					&& hitVisualIndex == 0)
       
  1520 					{
       
  1521 					HandleNavigationEvent ( EEventScrollRight );	
       
  1522 					}
       
  1523 			    else if(hitVisualIndex > mData->mHighlightIndex)
       
  1524 			        {
       
  1525 			        HandleNavigationEvent ( EEventScrollRight );	    
       
  1526 			        }
       
  1527 			    else
       
  1528 			        {
       
  1529 			        HandleNavigationEvent ( EEventScrollLeft );   
       
  1530 			        }
       
  1531                 }
       
  1532             }	
       
  1533         }   
       
  1534     }
       
  1535      
       
  1536 // ---------------------------------------------------------------------------
       
  1537 // SendFeedbackOnTouchDown
       
  1538 // ---------------------------------------------------------------------------
       
  1539 //  
       
  1540 void MulCoverFlowControl::SendFeedbackOnTouchDown(const MGestureEvent& aEvent)
       
  1541     {
       
  1542     MUL_LOG_ENTRY_EXIT("MUL:MulCoverFlowControl::SendFeedbackOnTouchDown");
       
  1543 
       
  1544     IMulModelAccessor* modelaccessor = ModelAccessor();
       
  1545     if(!modelaccessor ||  modelaccessor->CurrentItemCount() == 0)
       
  1546         {
       
  1547         return;   
       
  1548         }
       
  1549     CAlfVisual* hitVisual = aEvent.Visual();
       
  1550     if((hitVisual && hitVisual->Tag() == KCoverflowIcon) || (mData->mCoverFlow2DTemplate->IsUiOnOffFlagEnabled() )) 
       
  1551         {
       
  1552         mFeedback->InstantFeedback(ETouchFeedbackList);  
       
  1553         }    
       
  1554     }
       
  1555 // ---------------------------------------------------------------------------
       
  1556 // HandleSwipe
       
  1557 // Handle the swipe events (swipe left and swipe right) provided by the gesture helper.
       
  1558 // Also handles the extreme doodling case (it may happen that in doodling you can move two
       
  1559 // or three highlight before doing a pointer up) but gesture only gives us a swipe left and 
       
  1560 // swipe right event. so we have to decide the no of highlight movement to do while getting 
       
  1561 // left or right event. 
       
  1562 // Also for 2 or 3 highlight movement if the 1st or 2nd highlight movement is the cycling case
       
  1563 // then we have to cancel the bounce as its already happend because of swipe. But the bounce
       
  1564 // will happen if the final highlight change is a cyclic case.
       
  1565 // ---------------------------------------------------------------------------
       
  1566 //  
       
  1567 void MulCoverFlowControl::HandleSwipe(int aEvent)
       
  1568     {
       
  1569     MUL_LOG_ENTRY_EXIT("MUL:MulCoverFlowControl::HandleSwipe");
       
  1570     int event;
       
  1571     if(aEvent == EItemScrollLeft)
       
  1572 	    {
       
  1573 		if (mData->mIsMirrored)
       
  1574 			{
       
  1575 		    event = EEventScrollRight;
       
  1576 			}
       
  1577 		else
       
  1578 			{
       
  1579 			event = EEventScrollLeft;
       
  1580 			}
       
  1581 	    }
       
  1582 	else if(aEvent == EItemScrollRight)
       
  1583 		{
       
  1584 		if (mData->mIsMirrored)
       
  1585 			{
       
  1586 		    event = EEventScrollLeft;
       
  1587 			}
       
  1588 		else
       
  1589 			{
       
  1590 			event = EEventScrollRight;
       
  1591 			}
       
  1592 		}
       
  1593 	else
       
  1594 		{
       
  1595 		mData->mBaseElement->StopDoodling(200);	
       
  1596 		return;
       
  1597 		}
       
  1598 		
       
  1599 	if(mData->mBaseElement->NumberOfSwipes() == EDoubleSwipe || mData->mBaseElement->NumberOfSwipes() == ETripleSwipe)
       
  1600 		{
       
  1601 		// done to avoid undesirable ui behaviour when we move the pointer little back.
       
  1602 		// check if it can be done in another way.
       
  1603 		CAlfEnv& env = Env();
       
  1604 		TAlfRefreshMode oldRefreshMode = env.RefreshMode();
       
  1605 		env.SetRefreshMode(EAlfRefreshModeManual);
       
  1606 		if(mData->mBaseElement->NumberOfSwipes() == ETripleSwipe)
       
  1607 			{
       
  1608 			HandleNavigationEvent( event );	
       
  1609 			}
       
  1610 		HandleNavigationEvent( event );
       
  1611 		env.SetRefreshMode(oldRefreshMode);			
       
  1612 		}
       
  1613 	
       
  1614 	HandleNavigationEvent( event );
       
  1615 	// Feedback for swipe event
       
  1616 	mFeedback->InstantFeedback(ETouchFeedbackList);
       
  1617     }
       
  1618 
       
  1619 // ---------------------------------------------------------------------------	
       
  1620 // HandleHoldGestureEvents
       
  1621 // ---------------------------------------------------------------------------
       
  1622 //
       
  1623 void MulCoverFlowControl::HandleHoldGestureEvents( const MGestureEvent& aEvent )
       
  1624     {
       
  1625     MUL_LOG_ENTRY_EXIT("MUL:MulCoverFlowControl::HandleHoldGestureEvents");
       
  1626 
       
  1627     switch ( aEvent.Code(MGestureEvent::EAxisHorizontal) )
       
  1628         {
       
  1629         case EGestureDrag: 
       
  1630             {		
       
  1631             MUL_LOG_INFO("MUL::MulCoverFlowControl:HandleHoldGestureEvents EGestureDrag");
       
  1632             
       
  1633             ReverseDirectionInFastScroll(aEvent);
       
  1634             
       
  1635             /// @todo The strip direction intially should start with the current gesture direction.
       
  1636             // But if u keep dragging without releasing the pointer tehn the directioon should chnage whenever
       
  1637             // the pointer crosses the centre of the screen.
       
  1638             
       
  1639             // if the pointer has crossed the centre position after holding started then the
       
  1640             // direction should depend on which half of teh screen
       
  1641             // else
       
  1642             // the direction should depend on the swipe direction
       
  1643 			StartMoving(aEvent);		
       
  1644 	        break;
       
  1645             }
       
  1646 
       
  1647         case EGestureReleased:
       
  1648         case EGestureTap:
       
  1649         	{
       
  1650         	MUL_LOG_INFO("MUL::MulCoverFlowControl:HandleHoldGestureEvents EGestureReleased");
       
  1651  	        HandleEnhancedStop();
       
  1652 	        break;
       
  1653         	}	    	
       
  1654 	            
       
  1655         case EGestureHoldLeft:
       
  1656         case EGestureHoldRight:
       
  1657         	{
       
  1658         	MUL_LOG_INFO("MUL::MulCoverFlowControl:HandleHoldGestureEvents EGestureHoldLeft");
       
  1659 			if( EnhancedModeCondition() ) 
       
  1660             	{
       
  1661             	EnhancedStarted( aEvent );
       
  1662                 }
       
  1663             break;
       
  1664         	}
       
  1665         	
       
  1666         default:
       
  1667             break;
       
  1668         } // end of switch
       
  1669     
       
  1670     }
       
  1671   
       
  1672 // ---------------------------------------------------------------------------
       
  1673 // ReverseDirectionInFastSrroll
       
  1674 // ---------------------------------------------------------------------------
       
  1675 //    
       
  1676 void MulCoverFlowControl::ReverseDirectionInFastScroll(const MGestureEvent& aEvent)
       
  1677     {
       
  1678     MUL_LOG_ENTRY_EXIT("MUL:MulCoverFlowControl::ReverseDirectionInFastScroll");
       
  1679 
       
  1680     int distTravelled = aEvent.Distance().iX;
       
  1681     int pointerDownPos = aEvent.StartPos().iX;
       
  1682     int currPosition = aEvent.CurrentPos().iX;
       
  1683     int prevGestureDir = ConvertDistanceToDirection(mData->mCurrGestureDir);
       
  1684 
       
  1685     // if the distance travelled is negative i.e from right to left and the start position is on
       
  1686     // the right half of the screen and the direction has not changed yet , then special case to handle reference point. and vice versa
       
  1687     // case for left half of the screen.
       
  1688     if( ((distTravelled < 0 && pointerDownPos > mData->mScreenWidth/2 ) || (distTravelled > 0 && 
       
  1689     	pointerDownPos < mData->mScreenWidth/2 )) && mData->mReferencePoint != mData->mScreenWidth/2) 
       
  1690         {
       
  1691         if( mData->mDirectionChanged )
       
  1692             {
       
  1693             return;
       
  1694             }
       
  1695             
       
  1696         ChangeDirReferencePoint(currPosition,distTravelled);
       
  1697         }
       
  1698     else
       
  1699         {
       
  1700         // else the reference point will be the middle of the screen.
       
  1701         
       
  1702         // if the direction is not equal .. just check whether it has crossed the reference point.
       
  1703         // how to check whether it has crossed the reference point.
       
  1704         if(( prevGestureDir < 0 &&  currPosition > mData->mReferencePoint )||(prevGestureDir > 0 && currPosition < mData->mReferencePoint))
       
  1705             {
       
  1706             mData->mCurrGestureDir *= -1;
       
  1707             }
       
  1708           
       
  1709         mData->mReferencePoint = mData->mScreenWidth/2;	
       
  1710         }    
       
  1711     }
       
  1712     
       
  1713 // ---------------------------------------------------------------------------
       
  1714 // ChangeDirReferencePoint
       
  1715 // ---------------------------------------------------------------------------
       
  1716 //    
       
  1717 void MulCoverFlowControl::ChangeDirReferencePoint(int aCurrPosition, int aDistanceTravelled )
       
  1718     {
       
  1719     MUL_LOG_ENTRY_EXIT("MUL:MulCoverFlowControl::ChangeDirReferencePoint");
       
  1720    
       
  1721     int prevGestureDir = ConvertDistanceToDirection(mData->mCurrGestureDir);
       
  1722     int currGestureDir =  ConvertDistanceToDirection(aDistanceTravelled);
       
  1723     
       
  1724     if( prevGestureDir != currGestureDir ) 
       
  1725         {
       
  1726         // if the direction is not equal .. just check whether it has crossed the reference point.
       
  1727         // how to check whether it has crossed the reference point.
       
  1728         if(( prevGestureDir < 0 &&  aCurrPosition > mData->mReferencePoint )||(prevGestureDir > 0 && aCurrPosition < mData->mReferencePoint))
       
  1729             {
       
  1730             //crossed the reference point first time .now no need to maintain the reference point .its always half of the screen
       
  1731             mData->mReferencePoint = mData->mScreenWidth/2;
       
  1732             mData->mDirectionChanged = true;
       
  1733             mData->mCurrGestureDir = aDistanceTravelled;
       
  1734             }
       
  1735         else
       
  1736             {
       
  1737             // not crossed the reference point yet
       
  1738             // still going in the same direction .
       
  1739             mData->mReferencePoint = aCurrPosition - 10;	
       
  1740             }
       
  1741         }
       
  1742     else
       
  1743         {
       
  1744         // still going in the same direction .
       
  1745         if(( prevGestureDir < 0 &&  aCurrPosition < mData->mScreenWidth/2 )||(prevGestureDir > 0 
       
  1746         	&& aCurrPosition > mData->mScreenWidth/2))
       
  1747             {
       
  1748             mData->mReferencePoint = mData->mScreenWidth/2;			
       
  1749             }
       
  1750         else if(Abs(mData->mCurrGestureDir) < Abs(aDistanceTravelled)  )
       
  1751             {
       
  1752             // moving in the same direction in the increasing side towards the middle of the screen but hasnt 
       
  1753             // crossed the reference point yet.
       
  1754             mData->mReferencePoint = aCurrPosition - 10;		
       
  1755             }
       
  1756         }
       
  1757     }
       
  1758     
       
  1759 // ---------------------------------------------------------------------------
       
  1760 // ConvertDistanceToDirection
       
  1761 // ---------------------------------------------------------------------------
       
  1762 //
       
  1763 int MulCoverFlowControl::ConvertDistanceToDirection( int aDistance )
       
  1764 	{
       
  1765 	MUL_LOG_ENTRY_EXIT("MUL:MulCoverFlowControl::ConvertDistanceToDirection");
       
  1766 	return aDistance>0?1:-1;
       
  1767 	}      
       
  1768 
       
  1769 // ---------------------------------------------------------------------------
       
  1770 // HandleEnhancedStop
       
  1771 // ---------------------------------------------------------------------------
       
  1772 //
       
  1773 void MulCoverFlowControl::HandleEnhancedStop()
       
  1774 	{
       
  1775 	MUL_LOG_ENTRY_EXIT("MUL:MulCoverFlowControl::HandleEnhancedStop");
       
  1776         					
       
  1777 	CAlfWidgetControl::processEvent( TAlfEvent( ETypeFastScroll,EScrollStop ));
       
  1778 	mCoverFlowAo->StopMoving();
       
  1779 	mData->mFastScroll = false;
       
  1780 	mData->mGestureSpeed = 0;	
       
  1781     // @TODO animation time should be same as set by the application.
       
  1782     mData->mBaseElement->MoveVisuals(0,200);
       
  1783 	}
       
  1784 	
       
  1785 // ---------------------------------------------------------------------------
       
  1786 // FastScrollTransitionTime
       
  1787 // ---------------------------------------------------------------------------
       
  1788 // 	
       
  1789 int MulCoverFlowControl::FastScrollTransitionTime()
       
  1790 	{
       
  1791 	MUL_LOG_ENTRY_EXIT("MUL:MulCoverFlowControl::FastScrollTransitionTime");
       
  1792 	if (mData->mBounceInProgress)	
       
  1793 		{
       
  1794 		return 800;	
       
  1795 		}
       
  1796 	else
       
  1797 		{
       
  1798 		return mCoverFlowAo->FastScrollTransitionTime();
       
  1799 		}
       
  1800 	}	
       
  1801 	
       
  1802 
       
  1803 // ---------------------------------------------------------------------------
       
  1804 // EnhancedModeCondition
       
  1805 // ---------------------------------------------------------------------------
       
  1806 //
       
  1807 bool MulCoverFlowControl::EnhancedModeCondition()
       
  1808 	{
       
  1809 	MUL_LOG_ENTRY_EXIT("MUL:MulCoverFlowControl::EnhancedMode");
       
  1810 	if( !mData->mCoverFlow2DTemplate.get() )
       
  1811 		{
       
  1812 		return false;
       
  1813 		}
       
  1814 	UString orientation  = IsLandscape() ? UString(KLandscape)  :  UString(KPortrait);
       
  1815 
       
  1816 	// If EMulWidgetFlagFastScroll is not set, 
       
  1817 	// or the current orientation is not landscape
       
  1818 	// or in teh current template enhanced mode is not supported
       
  1819 	if( !(((MulCoverFlowWidget*)widget())->IsFlagSet(IMulMultiItemWidget::EMulWidgetFlagFastScroll) 
       
  1820 		&& !orientation.compare(KLandscape) 
       
  1821 		&& mData->mCoverFlow2DTemplate->EnhancedTagParsed()) )
       
  1822 		{		
       
  1823 		return false;
       
  1824 		}
       
  1825 	// If template4(i.e. ui on off mode is anabled) then if ui on mode then ecf canot be launched,so return false		
       
  1826 	else if( mData->mCoverFlow2DTemplate->IsUiOnOffFlagEnabled() && 
       
  1827     		(mData->mBaseElement->IsUiOnMode()) )
       
  1828 		{
       
  1829 		return false;	
       
  1830 		}
       
  1831     else
       
  1832 	    {
       
  1833 	    return true; // enhanced mode enabled
       
  1834 	    }
       
  1835 	}
       
  1836 
       
  1837 // ---------------------------------------------------------------------------
       
  1838 // EnhancedStarted
       
  1839 // ---------------------------------------------------------------------------
       
  1840 // 	
       
  1841 void MulCoverFlowControl::EnhancedStarted(const GestureHelper::MGestureEvent& aEvent )
       
  1842 	{
       
  1843 	MUL_LOG_ENTRY_EXIT("MUL:MulCoverFlowControl::EnhancedStarted");
       
  1844 	CAlfWidgetControl::processEvent( TAlfEvent( ETypeFastScroll,EScrollStart ));
       
  1845 	mData->mFastScroll = true;
       
  1846 	StartMoving(aEvent);			
       
  1847 	}
       
  1848 
       
  1849 // ---------------------------------------------------------------------------
       
  1850 // StartMoving
       
  1851 // ---------------------------------------------------------------------------
       
  1852 // 
       
  1853 void MulCoverFlowControl::StartMoving( const GestureHelper::MGestureEvent& aEvent )
       
  1854 	{
       
  1855 	MUL_LOG_ENTRY_EXIT("MUL:MulCoverFlowControl::StartMoving");
       
  1856 
       
  1857 	TRealPoint speedPoint = GestureSpeed( aEvent );
       
  1858 	int distance =  mData->mCurrGestureDir;
       
  1859 	if (mData->mIsMirrored)
       
  1860 		{
       
  1861 		distance = -distance;
       
  1862 		}
       
  1863 	mCoverFlowAo->StartMoving(speedPoint.iX, ConvertDistanceToDirection(distance) );
       
  1864 	mData->mGestureSpeed = speedPoint.iX;
       
  1865    	}
       
  1866 
       
  1867 // ---------------------------------------------------------------------------
       
  1868 // GestureSpeed
       
  1869 // ---------------------------------------------------------------------------
       
  1870 //
       
  1871 TRealPoint MulCoverFlowControl::GestureSpeed( const MGestureEvent& aEvent )
       
  1872     {
       
  1873 	MUL_LOG_ENTRY_EXIT("MUL:MulCoverFlowControl::GestureSpeed");    
       
  1874     
       
  1875     TRect area(this->DisplayArea());
       
  1876     TRect rect(TPoint(0,0),TPoint(area.Width(),area.Height())); 
       
  1877     return aEvent.SpeedPercent( rect );
       
  1878     }	
       
  1879 
       
  1880 //--------------------Slider related functions----------------------------
       
  1881 
       
  1882 // ---------------------------------------------------------------------------
       
  1883 // CreateSliderWidget
       
  1884 // ---------------------------------------------------------------------------
       
  1885 //
       
  1886 IAlfWidget* MulCoverFlowControl::CreateSliderWidget()
       
  1887 	{
       
  1888 	MUL_LOG_ENTRY_EXIT("MUL:MulCoverFlowControl::CreateSliderWidget");
       
  1889 	
       
  1890 	IAlfWidgetFactory& widgetFactory = AlfWidgetEnvExtension::widgetFactory(Env());
       
  1891 	IAlfWidget* sliderWidget = widgetFactory.findWidget( KNameSliderWidget );
       
  1892 	
       
  1893 	if( sliderWidget )
       
  1894 		{
       
  1895 		mSliderWidget = static_cast<IMulSliderWidget*>(sliderWidget);
       
  1896 		mData->mBaseElement->UpdateSliderTick( 1 );
       
  1897 		}
       
  1898 	else
       
  1899 		{
       
  1900 		// Get the template Id in Integer from your template data 
       
  1901 		//NOTE: Set template takes int as parameter not UString
       
  1902 		
       
  1903 		// Slider Widget creation
       
  1904 		mSliderWidget = widgetFactory.createWidget<IMulSliderWidget> ( KNameSliderWidget, KNameSliderWidget, *widget()->parent(), NULL);
       
  1905 		IMulSliderModel* mSliderModel = widgetFactory.createModel<IMulSliderModel> ("mulslidermodel");
       
  1906 		mSliderWidget->setModel(mSliderModel, true);	
       
  1907 		mSliderModel->SetTemplate(ESliderTemplate1);
       
  1908 		mSliderWidget->SetHandleKeyEvent(false);	
       
  1909 		mSliderWidget->control()->disableState(IAlfWidgetControl::Focusable); 
       
  1910 		}
       
  1911 	
       
  1912 	IAlfWidgetEventHandler* coverFlowEventHandler = static_cast<IAlfWidgetEventHandler*> (
       
  1913 	        mData->mBaseElement->makeInterface( IAlfWidgetEventHandler::type() ) );
       
  1914 	
       
  1915 	//Register the slidereventhandler and coverfloweventhandler with one another
       
  1916 	mSliderWidget->control()->addEventHandler((coverFlowEventHandler));
       
  1917 			
       
  1918 	return mSliderWidget;	
       
  1919 	}
       
  1920 	
       
  1921 // ---------------------------------------------------------------------------
       
  1922 // GetSliderWidget
       
  1923 // ---------------------------------------------------------------------------
       
  1924 //	
       
  1925 IAlfWidget* MulCoverFlowControl::GetSliderWidget()
       
  1926 	{
       
  1927 	MUL_LOG_ENTRY_EXIT("MUL:MulCoverFlowControl::GetSliderWidget");
       
  1928 
       
  1929 	IAlfWidgetFactory& widgetFactory = AlfWidgetEnvExtension::widgetFactory(*(CAlfEnv::Static()));
       
  1930 	return widgetFactory.findWidget( KNameSliderWidget );
       
  1931 	}		    		    		
       
  1932 
       
  1933 // ---------------------------------------------------------------------------
       
  1934 // GetSliderModel
       
  1935 // ---------------------------------------------------------------------------
       
  1936 //	
       
  1937 IMulSliderModel* MulCoverFlowControl::GetSliderModel()
       
  1938 	{
       
  1939 	MUL_LOG_ENTRY_EXIT("MUL:MulCoverFlowControl::GetSliderModel");
       
  1940 	if( mSliderWidget )
       
  1941 		{
       
  1942 		IMulSliderWidget* mulSliderWidget = static_cast<IMulSliderWidget*>(mSliderWidget);
       
  1943 		IMulSliderModel* mulSliderModel = static_cast<IMulSliderModel*>(mulSliderWidget->model());
       
  1944 		return mulSliderModel;
       
  1945 		}
       
  1946 	return NULL;
       
  1947 	}
       
  1948 	
       
  1949 // ---------------------------------------------------------------------------
       
  1950 // DestroySlider
       
  1951 // ---------------------------------------------------------------------------
       
  1952 //  
       
  1953 void MulCoverFlowControl::DestroySlider()
       
  1954 	{
       
  1955 	MUL_LOG_ENTRY_EXIT("MUL:MulCoverFlowControl::DestroySlider");
       
  1956 
       
  1957     MulBaseElement* baseelement = static_cast<MulBaseElement*>(findElement(KBase));
       
  1958     if(baseelement)
       
  1959     	{
       
  1960     	baseelement->RemoveSliderFromLayout();
       
  1961     	}
       
  1962         
       
  1963 	IAlfWidgetFactory& widgetFactory = AlfWidgetEnvExtension::widgetFactory(Env());
       
  1964 	IAlfWidget* sliderWidget = widgetFactory.findWidget( KNameSliderWidget );
       
  1965 	if( sliderWidget )
       
  1966 		{  
       
  1967 		IAlfElement* baseelement = findElement(KBase);
       
  1968 		if(baseelement)
       
  1969 			{
       
  1970 		
       
  1971 			IAlfWidgetEventHandler* coverFlowEventHandler = static_cast<IAlfWidgetEventHandler*> (
       
  1972 		          baseelement->makeInterface( IAlfWidgetEventHandler::type() ) );
       
  1973 		         
       
  1974 		    if( sliderWidget->control() )
       
  1975 				{
       
  1976 				sliderWidget->control()->removeEventHandler(*(coverFlowEventHandler));	
       
  1977 				}	
       
  1978 			
       
  1979 			}
       
  1980 		}		
       
  1981 	}
       
  1982 
       
  1983 // ---------------------------------------------------------------------------
       
  1984 // UpdateItemAtIndex
       
  1985 // ---------------------------------------------------------------------------
       
  1986 //
       
  1987 void MulCoverFlowControl::UpdateItemAtIndex(const int aRelativeIndex, int aAnimationTime)	
       
  1988 	{
       
  1989 	MUL_LOG_ENTRY_EXIT("MUL:MulCoverFlowControl::UpdateItemAtIndex");
       
  1990 	int absoluteIndex = RelativeToAbsolute(aRelativeIndex);
       
  1991 	if(absoluteIndex >= 0)
       
  1992 		{
       
  1993 		UpdateCoverflowItem( absoluteIndex,aRelativeIndex, aAnimationTime );	
       
  1994 		}
       
  1995 	else
       
  1996 		{
       
  1997 		SetBlankTexture(aRelativeIndex);	
       
  1998 		}	
       
  1999 	}
       
  2000 
       
  2001 // ---------------------------------------------------------------------------
       
  2002 // SetBlankTexture
       
  2003 // ---------------------------------------------------------------------------
       
  2004 //
       
  2005 void MulCoverFlowControl::SetBlankTexture(int aRelativeIndex)
       
  2006 	{
       
  2007 	MUL_LOG_ENTRY_EXIT("MUL:MulCoverFlowControl::SetBlankTexture");
       
  2008     CAlfFlowLayout& iconFlow = static_cast<CAlfFlowLayout&>(mData->mBaseElement->FlowLayout( KIconFlowLayoutIndex ));
       
  2009 	
       
  2010 	CAlfDeckLayout& layout = static_cast<CAlfDeckLayout&>(iconFlow.Visual(aRelativeIndex));
       
  2011 	CAlfImageVisual* visual =static_cast<CAlfImageVisual*>(layout.FindTag(KCoverflowIcon));
       
  2012 	
       
  2013     CAlfTextureManager& textureMgr = Env().TextureManager();
       
  2014     TAlfImage blankTexture = textureMgr.BlankTexture();
       
  2015     visual->SetImage(blankTexture);
       
  2016     
       
  2017     // remove the icon brush if any.
       
  2018     mData->mBaseElement->RemoveBrushOnIcon(*visual);        
       
  2019     
       
  2020     CAlfImageVisual* indicatorVisual =static_cast<CAlfImageVisual*>(layout.FindTag(KCoverflowIndicator));    
       
  2021     if(indicatorVisual)
       
  2022         {
       
  2023         indicatorVisual->SetImage(blankTexture);   
       
  2024         }
       
  2025 	}
       
  2026 
       
  2027 // ---------------------------------------------------------------------------
       
  2028 // UpdateCoverflowItem
       
  2029 // ---------------------------------------------------------------------------
       
  2030 //
       
  2031 void MulCoverFlowControl::UpdateCoverflowItem( int aItemIndex,int aVisualIndex, int aAnimationTime )
       
  2032 	{
       
  2033 	MUL_LOG_ENTRY_EXIT("MUL:MulCoverFlowControl::UpdateCoverflowItem");
       
  2034     
       
  2035     CAlfFlowLayout& iconFlow = static_cast<CAlfFlowLayout&>(mData->mBaseElement->FlowLayout( KIconFlowLayoutIndex ));
       
  2036 	IMulModelAccessor* accessor = static_cast<IMulModelAccessor*>(widget()->model()); 
       
  2037 		
       
  2038 	try
       
  2039 		{
       
  2040 		const MulVisualItem& item = accessor->Item(aItemIndex);
       
  2041 
       
  2042 		CAlfDeckLayout& layout = static_cast<CAlfDeckLayout&>(iconFlow.Visual(aVisualIndex));
       
  2043 		CAlfImageVisual* visual =static_cast<CAlfImageVisual*>(layout.FindTag(KCoverflowIcon));
       
  2044 		IMulVariantType* varData = item.Attribute(mulvisualitem::KMulIcon1);
       
  2045 		if(varData && visual)
       
  2046 			{
       
  2047 			DoSetImage(varData,visual);
       
  2048 			mData->mBaseElement->ApplyScaleMode(*visual);
       
  2049 			}
       
  2050 		else
       
  2051 			{
       
  2052 			if (mData->mDefaultTextureId >= 0)
       
  2053 				{
       
  2054 				const CAlfTexture* texture = Env().TextureManager().Texture (mData->mDefaultTextureId);
       
  2055 				if(visual)
       
  2056 				    {
       
  2057 				    visual->SetImage (TAlfImage (*texture));
       
  2058 				    }
       
  2059 				mData->mBaseElement->ApplyScaleMode(*visual);	
       
  2060 				}
       
  2061 			else
       
  2062 				{
       
  2063 				if(visual)
       
  2064 				    {        
       
  2065 				    visual->SetImage(Env().TextureManager().BlankTexture());
       
  2066 				    }
       
  2067 				}
       
  2068 			}
       
  2069 		if(mData->mCoverFlow2DTemplate->IsUiOnOffFlagEnabled() )
       
  2070     		{
       
  2071     		mData->mBaseElement->DisplayIndicatorIcon(item,aVisualIndex);			
       
  2072     		}
       
  2073 		}
       
  2074 	catch(...)
       
  2075 		{
       
  2076 		CAlfDeckLayout& layout = static_cast<CAlfDeckLayout&>(iconFlow.Visual(aVisualIndex));		
       
  2077 		CAlfImageVisual* visual =static_cast<CAlfImageVisual*>(layout.FindTag(KCoverflowIcon));
       
  2078 		if (mData->mDefaultTextureId >= 0)
       
  2079 			{
       
  2080 			const CAlfTexture* texture = Env().TextureManager().Texture (mData->mDefaultTextureId);
       
  2081 			visual->SetImage (TAlfImage (*texture));
       
  2082 			mData->mBaseElement->ApplyScaleMode(*visual);	
       
  2083 			}
       
  2084 		else
       
  2085 			{
       
  2086 		    visual->SetImage(Env().TextureManager().BlankTexture());	
       
  2087 			}			
       
  2088 		
       
  2089 		}//catch ends
       
  2090 	// if the item is the highlight item then update the text if required.	
       
  2091 	if (aVisualIndex == mData->mNumVisibleItem)		
       
  2092 		{
       
  2093 		mData->mBaseElement->UpdateTextValue(aAnimationTime);
       
  2094 		}
       
  2095 	}
       
  2096 	
       
  2097 
       
  2098 // ---------------------------------------------------------------------------
       
  2099 // DoSetImage
       
  2100 // ---------------------------------------------------------------------------
       
  2101 //			
       
  2102 void MulCoverFlowControl::DoSetImage(IMulVariantType* aData,CAlfImageVisual* aImgVisual)
       
  2103 	{
       
  2104 	MUL_LOG_ENTRY_EXIT("MUL:MulCoverFlowControl::DoSetImage");
       
  2105 
       
  2106 	if ( aData && aData->Type() == IMulVariantType::EDes)
       
  2107 		{
       
  2108 		TAlfImage image = AlfWidgetEnvExtension::resourcePool(
       
  2109 			aImgVisual->Env()).getImageResource((char*)(aData->DesC().Ptr()));
       
  2110 		if(image.HasTexture())
       
  2111 			{
       
  2112 			aImgVisual->SetImage(image);
       
  2113 			}
       
  2114 		else if(IsSVGImage(aData->DesC()))
       
  2115 			{
       
  2116 			LoadImageFromSvg(aData->DesC(),*aImgVisual);
       
  2117 			}
       
  2118 		else
       
  2119 			{
       
  2120 			// check if the texture is already loaded
       
  2121 			CAlfTextureManager& textureMgr = aImgVisual->Env().TextureManager();
       
  2122 			const TInt existingTextureId = textureMgr.TextureId( aData->DesC() );
       
  2123 			const CAlfTexture* texture = NULL;  
       
  2124 
       
  2125 			if ( existingTextureId != KErrNotFound )
       
  2126 				{
       
  2127 				texture = textureMgr.Texture( existingTextureId );
       
  2128 				}
       
  2129 			else
       
  2130 				{
       
  2131 				TRAPD( err, texture = &( textureMgr.LoadTextureL(aData->DesC(),
       
  2132 				EAlfTextureFlagLoadAnimAsImage, KAlfAutoGeneratedTextureId ) ) );               
       
  2133 				if( err != KErrNone )
       
  2134 					{
       
  2135 					// means the texture is invalid.
       
  2136 					//draw a blank texture here.
       
  2137 					texture = &( textureMgr.BlankTexture() );
       
  2138 					}                           
       
  2139 				}                                   
       
  2140 			aImgVisual->SetImage( TAlfImage( *texture ) ); 
       
  2141 			}
       
  2142 		}
       
  2143 	else if ( aData && aData->Type ()== IMulVariantType::EInt)
       
  2144 		{
       
  2145 		const CAlfTexture* texture = Env().TextureManager().Texture (aData->integer());
       
  2146 		aImgVisual->SetImage (TAlfImage (*texture));	
       
  2147 		}
       
  2148 	}
       
  2149 	
       
  2150 // ---------------------------------------------------------------------------
       
  2151 // IsSVGImage	
       
  2152 // ---------------------------------------------------------------------------
       
  2153 //
       
  2154 bool MulCoverFlowControl::IsSVGImage(const TDesC& aImagePath)
       
  2155 	{
       
  2156 	MUL_LOG_INFO("MUL:MulCoverFlowControl::IsSVGImage");
       
  2157     _LIT(KSvgFile,".svg");
       
  2158 
       
  2159 	return  (KErrNotFound != aImagePath.FindC(KSvgFile));
       
  2160 	}
       
  2161 	
       
  2162 // ---------------------------------------------------------------------------
       
  2163 // LoadImageFromSvg	
       
  2164 // ---------------------------------------------------------------------------
       
  2165 //
       
  2166 void MulCoverFlowControl::LoadImageFromSvg(const TDesC& aImagePath,
       
  2167 											CAlfImageVisual& aImageVisual )
       
  2168 	{
       
  2169 	MUL_LOG_INFO("MUL:MulCoverFlowControl::LoadImageFromSvg");
       
  2170 	
       
  2171 	CAlfImageLoaderUtil imgLoaderUtil;
       
  2172 	imgLoaderUtil.SetSize (TSize (50, 50));
       
  2173 
       
  2174 	MAlfBitmapProvider* iSvgBitMapProv= imgLoaderUtil.CreateSVGImageLoaderL (aImagePath);
       
  2175 	CAlfTexture &texture = aImageVisual.Env().TextureManager().CreateTextureL (
       
  2176 							KAlfAutoGeneratedTextureId,
       
  2177 							iSvgBitMapProv,
       
  2178 							EAlfTextureFlagLoadAnimAsImage);
       
  2179 	aImageVisual.SetImage (TAlfImage (texture));
       
  2180 	
       
  2181 	}
       
  2182 
       
  2183 // ---------------------------------------------------------------------------
       
  2184 // StoreVisibleItemCount	
       
  2185 // ---------------------------------------------------------------------------
       
  2186 //		
       
  2187 void MulCoverFlowControl::StoreVisibleItemCount(int aVisibleItemCount)
       
  2188 	{
       
  2189 	MUL_LOG_ENTRY_EXIT("MUL:MulCoverFlowControl::StoreVisibleItemCount");
       
  2190 	mData->mNumVisibleItem = aVisibleItemCount;
       
  2191 	}
       
  2192 
       
  2193 // ---------------------------------------------------------------------------
       
  2194 // SetDefaultImage	
       
  2195 // ---------------------------------------------------------------------------
       
  2196 //
       
  2197 void MulCoverFlowControl::SetDefaultImage(int aTextureId)
       
  2198 	{
       
  2199 	MUL_LOG_ENTRY_EXIT("MUL:MulCoverFlowControl::SetDefaultImage");
       
  2200 	mData->mDefaultTextureId = aTextureId;
       
  2201 	}
       
  2202 
       
  2203 // ---------------------------------------------------------------------------
       
  2204 // WindowTop	
       
  2205 // ---------------------------------------------------------------------------
       
  2206 //
       
  2207 int MulCoverFlowControl::WindowTop(int aHighlightIndex)
       
  2208 	{
       
  2209 	MUL_LOG_ENTRY_EXIT("MUL:MulCoverFlowControl::WindowTop");
       
  2210 	int visibleItems = 2 * mData->mNumVisibleItem + 1;
       
  2211 	int windowTop = aHighlightIndex - (visibleItems / 2);
       
  2212 	IMulModelAccessor* accessor = static_cast<IMulModelAccessor*>(widget()->model());
       
  2213     if(accessor)
       
  2214         {
       
  2215     	windowTop = (windowTop + visibleItems - 1) >= TotalModelCount() ? 
       
  2216     		TotalModelCount() - visibleItems : windowTop;
       
  2217     	windowTop = windowTop > 0 ? windowTop : 0;
       
  2218         }
       
  2219 
       
  2220 	return windowTop;
       
  2221 	}
       
  2222 
       
  2223 // ---------------------------------------------------------------------------
       
  2224 // UpdateBaseElement	
       
  2225 // ---------------------------------------------------------------------------
       
  2226 //
       
  2227 void MulCoverFlowControl::UpdateBaseElement(MulBaseElement* aBaseElement)
       
  2228 	{
       
  2229 	MUL_LOG_ENTRY_EXIT("MUL:MulCoverFlowControl::UpdateBaseElement");
       
  2230 	mData->mBaseElement = aBaseElement;
       
  2231 	}
       
  2232 
       
  2233 // ---------------------------------------------------------------------------
       
  2234 // IsLandscape	
       
  2235 // ---------------------------------------------------------------------------
       
  2236 //
       
  2237 bool MulCoverFlowControl::IsLandscape()
       
  2238 	{
       
  2239 	bool ret;
       
  2240 	TSize ScreenSz = AlfUtil::ScreenSize();
       
  2241 	if (ScreenSz.iWidth > ScreenSz.iHeight)
       
  2242 		{
       
  2243 		ret = true;
       
  2244 		}
       
  2245 	else
       
  2246 		{
       
  2247 		ret = false;
       
  2248 		}
       
  2249 	return ret;
       
  2250 	}
       
  2251 
       
  2252 // ---------------------------------------------------------------------------
       
  2253 // Gesturehelper  
       
  2254 // ---------------------------------------------------------------------------
       
  2255 //
       
  2256 GestureHelper::CGestureHelper* MulCoverFlowControl::Gesturehelper()
       
  2257     {
       
  2258     return mHelper.get(); 
       
  2259     }
       
  2260 
       
  2261 	} // namespace Alf
       
  2262 
       
  2263 //End of file