/*
* Copyright (c) 2002-2006 Nokia Corporation and/or its subsidiary(-ies).
* All rights reserved.
* This component and the accompanying materials are made available
* under the terms of "Eclipse Public License v1.0"
* which accompanies this distribution, and is available
* at the URL "http://www.eclipse.org/legal/epl-v10.html".
*
* Initial Contributors:
* Nokia Corporation - initial contribution.
*
* Contributors:
*
* Description:  Marquee control
*
*/

// System includes
#include <utf.h>
#include <AknsUtils.h>
#include <AknUtils.h>
#include <AknMarqueeControl.h>
#include <AknBidiTextUtils.h>
#include <debug.h>

// User includes
#include "xnviewnodeimpl.h"
#include "xndompropertyvalue.h"
#include "xndomlist.h"
#include "xnproperty.h"
#include "xnnodepluginif.h"
#include "xntype.h" 

#include "c_xnutils.h"

#include "xnnewstickeradapter.h"
#include "xnnewstickercontrol.h"
#include "xncomponentnodeimpl.h"

// Constants
const TInt KThousandCoef = 1000;
const TInt KByteLength = 8;
const TInt KXnNewstickerDelay = 1000000;   // start scrolling after a delay of 1 second
const TInt KXnNewstickerInterval = 100000; // scroll 10 times in a second
const TInt KXnNewstickerScrollAmount = 6;  // scroll 6 pixels at time


// ============================= LOCAL FUNCTIONS ===============================

// -----------------------------------------------------------------------------
// GetIntPropertyL
// Gets an integer property from the node.
// Returns: aNode UI node
//          aproperty The property that is to be found
//          return The value of the property. If not found, KErrNotFound returned.
// -----------------------------------------------------------------------------
// 
static TInt GetIntPropertyL( CXnNodePluginIf& aNode, const TDesC8& aProperty )
    {
    CXnProperty* prop = aNode.GetPropertyL(aProperty);
    if(prop)
        {        
        CXnDomPropertyValue* value = 
            static_cast<CXnDomPropertyValue*>( 
                    prop->Property()->PropertyValueList().Item(0) );
        
        if(CXnDomPropertyValue::ENumber == value->PrimitiveValueType())
            {
            TInt integer = static_cast<TInt>( prop->FloatValueL() );
            
            return integer;
            }
        }
    
    return KErrNotFound;
    }       

// -----------------------------------------------------------------------------
// CXnNewstickerAdapter::SetNewstickerPropertiesL
// -----------------------------------------------------------------------------
//
void CXnNewstickerAdapter::SetNewstickerPropertiesL()
    {
    // scroll amount 
    TInt scrollamount( GetIntPropertyL( iNode, 
        XnPropertyNames::newsticker::KXnScrollAmount ) );   // px
    
    if ( scrollamount == KErrNotFound )
        {
        scrollamount = KXnNewstickerScrollAmount;
        }

    CXnProperty* prop( iNode.GetPropertyL(
        XnPropertyNames::newsticker::KScrollBehaviour ) );
    
    // Default
    iScrollBehaviour = EScroll;
    
    if ( prop )
        {
        const TDesC8& value( prop->StringValue() );
        
        if ( value == XnPropertyNames::newsticker::scroll_behaviour::KAlternate )                 
            {
            scrollamount = 0;
            iScrollBehaviour = EAlternate;
            }
        else if ( value == XnPropertyNames::newsticker::scroll_behaviour::KScrollAlternate )                 
            {
            iScrollBehaviour = EScrollAlternate;
            }
        }
    
    iMarqueeControl->SetSpeedInPixels( scrollamount );
    
    if ( iScrollBehaviour == EScroll || iScrollBehaviour == EScrollAlternate )
        {                    
        // scroll delay, i.e. fps
        TInt scrolldelay( GetIntPropertyL( iNode, 
            XnPropertyNames::newsticker::KXnScrollDelay ) );  // ms
        
        if ( scrolldelay == KErrNotFound )
            {
            scrolldelay = KXnNewstickerInterval;
            }
        else 
            {
            // change to seconds
            scrolldelay *= KThousandCoef;
            }
        
        iMarqueeControl->SetInterval( scrolldelay );         
                                    
        // start delay
        TInt startdelay( GetIntPropertyL( iNode, 
            XnPropertyNames::newsticker::KXnStartDelay ) ); // ms
        
        if ( startdelay == KErrNotFound )
            {
            startdelay = KXnNewstickerDelay;
            }
        else 
            {
            // change to seconds
            startdelay *= KThousandCoef;
            }
        
        iMarqueeControl->SetDelay( startdelay );
        iAlternateDelay = startdelay;
        
        if ( iScrollBehaviour == EScrollAlternate )
            {
            TInt alternateTime( GetIntPropertyL( iNode,  
                XnPropertyNames::newsticker::KDisplayTime ) );
            
            if( alternateTime == KErrNotFound )
                {
                alternateTime = KXnNewstickerDelay;            
                }
            else
                {
                // change to seconds
                alternateTime *= KThousandCoef; 
                }
                    
            iAlternateDelay = alternateTime;            
            }                    
        }                
    else // TScrollBehaviour::EAlternate
        {
        TInt alternateTime( GetIntPropertyL( 
            iNode, XnPropertyNames::newsticker::KDisplayTime ) );
        
        if ( alternateTime == KErrNotFound )
            {
            alternateTime = KXnNewstickerDelay;
            }
        else
            {
            // change to seconds    
            alternateTime *= KThousandCoef; 
            }

        iMarqueeControl->SetDelay( 0 );
        iMarqueeControl->SetInterval( 0 );
        
        iAlternateDelay = alternateTime;        
        }        
    
    // _s60-scroll-loop property. True by default.
    CXnProperty* loopProp( iNode.GetPropertyL(
        XnPropertyNames::newsticker::KScrollLoop ) );
    
    TBool looping( ETrue );
    
    if ( loopProp && loopProp->StringValue() == XnPropertyNames::KFalse )
        {
        looping = EFalse;
        }
    
    iControl->SetScrollLooping( looping );
    
    CXnProperty* restartProperty( iNode.GetPropertyL(
        XnPropertyNames::newsticker::KRestartAfterUpdate ) );
    
    if ( restartProperty && restartProperty->StringValue() == XnPropertyNames::KTrue )
        {
        iRestartAfterUpdate = ETrue;
        }
    }  

// ============================ MEMBER FUNCTIONS ===============================

// -----------------------------------------------------------------------------
// CXnNewstickerAdapter::NewL
// Symbian static 1st phase constructor
// -----------------------------------------------------------------------------
//
CXnNewstickerAdapter* CXnNewstickerAdapter::NewL( CXnControlAdapter* aParent, 
    CXnNodePluginIf& aNode )
    {
	CXnNewstickerAdapter* self = new( ELeave ) CXnNewstickerAdapter( aParent, aNode );
    CleanupStack::PushL( self );
    self->ConstructL( aParent );
    CleanupStack::Pop();
    
    return self;	
    }

// -----------------------------------------------------------------------------
// CXnNewstickerAdapter::ConstructL
// Symbian 2nd phase constructor can leave.
// -----------------------------------------------------------------------------
//
void CXnNewstickerAdapter::ConstructL( CXnControlAdapter* aParent )
    {
    CXnControlAdapter::ConstructL( iNode );
    
    iControl = CXnNewstickerControl::NewL( this );    
    
    iMarqueeControl = CAknMarqueeControl::NewL();
    TCallBack callback( RedrawCallback, this );
    iMarqueeControl->SetRedrawCallBack( callback );
    iMarqueeControl->SetContainerWindowL( *aParent );
    iMarqueeControl->ActivateL();
    
    iPeriodicTimer = CPeriodic::NewL( CActive::EPriorityLow );
    
    SetTextPropertiesL();
    SetNewstickerPropertiesL();
    
    RPointerArray<CXnNodePluginIf> children = iNode.ChildrenL();
    CleanupClosePushL( children );
    
    for( TInt i = 0; i < children.Count(); ++i )
        {
        CXnNodePluginIf* child( children[i] );
        
        const TDesC8& type( child->Type()->Type() );
                
        // We only care for <title> nodes
        if ( type == XnPropertyNames::title::KTitle )
            {
            iControl->AppendTitleL( KNullDesC );    
            }
        }
    CleanupStack::PopAndDestroy( &children );          
    }

// -----------------------------------------------------------------------------
// CXnNewstickerAdapter::CXnNewstickerAdapter
// C++ default constructor
// -----------------------------------------------------------------------------
//
CXnNewstickerAdapter::CXnNewstickerAdapter( CXnControlAdapter* /*aParent*/, 
    CXnNodePluginIf& aNode )
    : iNode( aNode ),
      iPowerSaveMode( EFalse ),
      iRestartAfterUpdate( EFalse ),
      iTextColor( KRgbBlack ),
      iTextAlignment( CGraphicsContext::ELeft ),
      iTextBaseline( 0 ),
      iUnderlining( EUnderlineOff ),
      iStrikethrough( EStrikethroughOff ),      
      iRedraw( ETrue )
    {
    }

// -----------------------------------------------------------------------------
// CXnNewstickerAdapter::~CXnNewstickerAdapter
// C++ destructor
// -----------------------------------------------------------------------------
//
CXnNewstickerAdapter::~CXnNewstickerAdapter()
    {           
    delete iPeriodicTimer;

    if( iFont && ( iReleaseFont == 1 ) )
        {
        CWsScreenDevice* dev = iCoeEnv->ScreenDevice();
        dev->ReleaseFont( iFont ); 
        }
    
    delete iMarqueeControl;
    delete iControl;
    }

// -----------------------------------------------------------------------------
// CXnNewstickerAdapter::SetTextPropertiesL
// Sets text properties, such as color, font, etc.
// -----------------------------------------------------------------------------
//
void CXnNewstickerAdapter::SetTextPropertiesL()
    {
    if (iFont && ( iReleaseFont == 1 ) )
        {
        CWsScreenDevice* dev = iCoeEnv->ScreenDevice();
        dev->ReleaseFont(iFont); 
        iFont = NULL;
        }
    
    CXnUtils::CreateFontL(iNode, iFont, iReleaseFont);
    
    TBool colorSet(EFalse);
    CXnProperty* colorProperty = iNode.GetPropertyL(XnPropertyNames::appearance::common::KColor);
    
    if( colorProperty )
        {
        CXnDomProperty* domProperty = colorProperty->Property();
        if(domProperty)
            {
            TInt error( KErrNotSupported );
            CXnDomPropertyValue* value = static_cast< CXnDomPropertyValue* >
                                            ( domProperty->PropertyValueList().Item( 0 ) );
            
            if( value->IsAutoIdent() )
                {
                MAknsSkinInstance* skinInstance = AknsUtils::SkinInstance();
                error = AknsUtils::GetCachedColor( skinInstance, iTextColor, KAknsIIDQsnTextColors,
                EAknsCIQsnTextColorsCG6 );
                }
            else if( value->PrimitiveValueType() == CXnDomPropertyValue::ERgbColor )
                {
                iTextColor = value->RgbColorValueL();
                error = KErrNone;
                }
            else
                {
                HBufC* colorString = colorProperty->StringValueL();
                CleanupStack::PushL( colorString );
                
                CXnUtils::StripQuotes( colorString );
                
                TInt index = 0;
                TAknsItemID skinID;
                
                TBool idResolved = CXnUtils::ResolveSkinItemIDL(
                        colorString->Des(), skinID, index );
                
                if( idResolved )
                    {
                    MAknsSkinInstance* skinInstance = AknsUtils::SkinInstance();
                    error = AknsUtils::GetCachedColor(
                            skinInstance, iTextColor, skinID, index );
                    }
                else // use auto value if skin id is invalid.
                    {
                    MAknsSkinInstance* skinInstance = AknsUtils::SkinInstance();
                    error = AknsUtils::GetCachedColor(skinInstance, iTextColor,
                            KAknsIIDQsnTextColors, EAknsCIQsnTextColorsCG6);
                    }
                CleanupStack::PopAndDestroy( colorString );                 
                }
            
            if ( error == KErrNone )
                {
                colorSet = ETrue;
                }
            }
        }

    if( !colorSet ) // Use text skin color
        {
        MAknsSkinInstance* skinInstance = AknsUtils::SkinInstance();
        TRgb textColor;
        TInt error = AknsUtils::GetCachedColor( skinInstance, textColor, 
            KAknsIIDQsnTextColors, EAknsCIQsnTextColorsCG6);
        if (error == KErrNone)
            {
            iTextColor = textColor;
            }
        }
    
    CXnProperty* textDecorationProp = 
        iNode.GetPropertyL(XnPropertyNames::appearance::common::KTextDecoration);
    
    if( textDecorationProp )
        {
        CXnDomList& propertyValueList = textDecorationProp->Property()->PropertyValueList();
        TInt valueCount = propertyValueList.Length();
        
        for( TInt i = 0; i < valueCount; ++i )
            {
            CXnDomPropertyValue* value = 
                static_cast<CXnDomPropertyValue*>(propertyValueList.Item(i));
            if (value->StringValueL() == 
                XnPropertyNames::appearance::common::textdecoration::KUnderline)
                {
                iUnderlining = EUnderlineOn;
                }
            if (value->StringValueL() == 
                XnPropertyNames::appearance::common::textdecoration::KLinethrough)
                {
                iStrikethrough = EStrikethroughOn;
                }
            }
        }
    
    TGulAlignmentValue alignment = CXnUtils::TextAlignment( iNode );
    
    switch( alignment )
        {
        case EHCenterVCenter:            
            iTextAlignment = CGraphicsContext::ECenter;                 
            break;            
        case EHRightVCenter:            
            iTextAlignment = CGraphicsContext::ERight;                
            break;            
        default: 
            iTextAlignment = CGraphicsContext::ELeft;
            break;    
        }   
    }

// -----------------------------------------------------------------------------
// CXnNewstickerAdapter::AppendTitleL
// -----------------------------------------------------------------------------
//
void CXnNewstickerAdapter::AppendTitleL( const TDesC& aTitle )
    {
    iControl->AppendTitleL( aTitle );
    iNode.SetDirtyL();
    }

// -----------------------------------------------------------------------------
// CXnNewstickerAdapter::InsertTitleL
// -----------------------------------------------------------------------------
//
void CXnNewstickerAdapter::InsertTitleL( const TDesC& aTitle, TInt aIndex )
    {
    iControl->InsertTitleL( aTitle, aIndex );
    iNode.SetDirtyL();
    }

// -----------------------------------------------------------------------------
// CXnNewstickerAdapter::UpdateTitleL
// -----------------------------------------------------------------------------
//
void CXnNewstickerAdapter::UpdateTitleL( const TDesC& aTitle, TInt aIndex )
    {
    iControl->UpdateTitleL( aTitle, aIndex );
    iNode.SetDirtyL();
    
    if ( iRestartAfterUpdate )
        {        
        Restart();
        }
    }

// -----------------------------------------------------------------------------
// CXnNewstickerAdapter::DeleteTitleL
// -----------------------------------------------------------------------------
//
void CXnNewstickerAdapter::DeleteTitleL( TInt aIndex )
    {
    iControl->DeleteTitleL( aIndex );
    iNode.SetDirtyL();
    }

// -----------------------------------------------------------------------------
// CXnNewstickerAdapter::CurrentTitleIndex
// -----------------------------------------------------------------------------
//
TInt CXnNewstickerAdapter::CurrentTitleIndex()
    {
    return iControl->CurrentTitleIndex();
    }

// -----------------------------------------------------------------------------
// CXnNewstickerAdapter::Title
// -----------------------------------------------------------------------------
//
const TDesC& CXnNewstickerAdapter::Title( TInt aIndex )
    {
    return iControl->Title( aIndex );
    }

// -----------------------------------------------------------------------------
// CXnNewstickerAdapter::ClearTitles
// -----------------------------------------------------------------------------
//
void CXnNewstickerAdapter::ClearTitles()
    {
    iControl->ClearTitles();
    TRAP_IGNORE( iNode.SetDirtyL() );
    }

// -----------------------------------------------------------------------------
// CXnNewstickerAdapter::Restart
// -----------------------------------------------------------------------------
//
void CXnNewstickerAdapter::Restart()
    {
    Stop();
    Start( ETrue );                
    }

// -----------------------------------------------------------------------------
// CXnNewstickerAdapter::Start
// -----------------------------------------------------------------------------
//
void CXnNewstickerAdapter::Start( TBool aSelectTitle )
    {
    if ( IsVisible() && !iPowerSaveMode && !iNode.Rect().IsEmpty() )
        {
        if ( aSelectTitle )
            {
            if ( iControl->SelectTitle() == KErrNotFound )
                {
                return;
                }
            }
        
        const TDesC& title( iControl->CurrentTitle() );
                                
        switch ( iScrollBehaviour )
            {
            case EScroll:
            case EScrollAlternate:
                {
                iMarqueeControl->EnableMarquee( ETrue );
                iRedraw = ETrue;

                TInt textWidth( 
                    iFont->TextWidthInPixels( title ) );
                
                TInt rectWidth( iNode.Rect().Width() );
                
                if ( textWidth < rectWidth )
                    {
                    StartAlternateCounter();
                    }                                
                }
                break;                
            case EAlternate:
                {
                iMarqueeControl->EnableMarquee( EFalse );
                StartAlternateCounter();  
                }
                break;                
            default:
                break;
            }
        
        DrawDeferred();
        }
    }

// -----------------------------------------------------------------------------
// CXnNewstickerAdapter::Stop
// -----------------------------------------------------------------------------
//
void CXnNewstickerAdapter::Stop()
    {  
    StopAlternateCounter();
    StopMarquee();
    }

// -----------------------------------------------------------------------------
// CXnNewstickerAdapter::StopAlternateCounter
// -----------------------------------------------------------------------------
//
void CXnNewstickerAdapter::StopAlternateCounter()
    {
    iPeriodicTimer->Cancel();    
    }

// -----------------------------------------------------------------------------
// CXnNewstickerAdapter::StopMarquee
// -----------------------------------------------------------------------------
//
void CXnNewstickerAdapter::StopMarquee()
    {
    iMarqueeControl->Reset();
    iMarqueeControl->EnableMarquee( EFalse );
    }

// -----------------------------------------------------------------------------
// CXnNewstickerAdapter::StartCounter
// -----------------------------------------------------------------------------
//
void CXnNewstickerAdapter::StartAlternateCounter()
    {
    iPeriodicTimer->Cancel();
    
    iPeriodicTimer->Start(                
        TTimeIntervalMicroSeconds32( iAlternateDelay ),
        TTimeIntervalMicroSeconds32( 0 ), 
        TCallBack( PeriodicEventL, this ) ); 
    }

// -----------------------------------------------------------------------------
// CXnNewstickerAdapter::PeriodicEventL
// -----------------------------------------------------------------------------
//
TInt CXnNewstickerAdapter::PeriodicEventL( TAny* aPtr )
    {
    __PRINTS( "CXnNewstickerAdapter::PeriodicEventL, timer runs" );
    
    CXnNewstickerAdapter* self = static_cast< CXnNewstickerAdapter* >( aPtr );
    
    self->iPeriodicTimer->Cancel();
    
    TBool endOfLoop( self->iControl->SelectNextTitle() );
    
    self->DoScroll( endOfLoop );
  
    self->DrawNow();
    
    return KErrNone;
    }

// -----------------------------------------------------------------------------
// CXnNewstickerAdapter::MakeVisible()
// -----------------------------------------------------------------------------
//
void CXnNewstickerAdapter::MakeVisible( TBool aVisible )
    {
    CCoeControl::MakeVisible( aVisible );

    if ( aVisible )
        {
        Restart();
        }
    else
        {
        Stop();
        }
    }

// -----------------------------------------------------------------------------
// CXnNewstickerAdapter::SizeChanged()
// -----------------------------------------------------------------------------
//
void CXnNewstickerAdapter::SizeChanged()
    {
    CXnControlAdapter::SizeChanged();         
    iMarqueeControl->SetExtent( iNode.Rect().iTl, iNode.Rect().Size() );
    
    iTextBaseline = iNode.Rect().Height() / 2 + iFont->AscentInPixels() / 2;    
    }

// -----------------------------------------------------------------------------
// CXnNewstickerAdapter::CountComponentControls() const
// -----------------------------------------------------------------------------
//
TInt CXnNewstickerAdapter::CountComponentControls() const
    {
    return 1; // return nbr of controls inside this container
    }

// -----------------------------------------------------------------------------
// CXnNewstickerAdapter::ComponentControl(TInt aIndex) const
// -----------------------------------------------------------------------------
//
CCoeControl* CXnNewstickerAdapter::ComponentControl( TInt aIndex ) const
    {
    if ( aIndex == 0 )
        {
        return iMarqueeControl;
        }

    return NULL;        
    }

// -----------------------------------------------------------------------------
// CXnNewstickerAdapter::DoHandlePropertyChangeL
// -----------------------------------------------------------------------------
//
void CXnNewstickerAdapter::DoHandlePropertyChangeL( CXnProperty* /*aProperty*/ )
    {
    SetTextPropertiesL();
    SetNewstickerPropertiesL();
    }

// -----------------------------------------------------------------------------
// CXnNewstickerAdapter::SkinChanged
// -----------------------------------------------------------------------------
// 
void CXnNewstickerAdapter::SkinChanged() 
    {
    CXnControlAdapter::SkinChanged();
    TRAP_IGNORE( SetTextPropertiesL() );
    }

// -----------------------------------------------------------------------------
// CXnNewstickerAdapter::ReportNewstickerEventL
// -----------------------------------------------------------------------------
// 
void CXnNewstickerAdapter::ReportNewstickerEvent( const TDesC8& aEventName,
    TInt aIndex )
    { 
    TBuf8< KByteLength >index( KNullDesC8 );
    index.Num( aIndex );
    
    TRAP_IGNORE( iNode.ReportTriggerEventL( aEventName,
            XnPropertyNames::action::trigger::name::KTitleIndex, index ); )
    }

// -----------------------------------------------------------------------------
// CXnNewstickerAdapter::Draw
// Draws the text component
// -----------------------------------------------------------------------------
void CXnNewstickerAdapter::Draw( const TRect& aRect ) const
    {    
    CXnControlAdapter::Draw( aRect );
    
    if ( iControl->CurrentTitleIndex() != KErrNotFound )
        {
        const TDesC& title( iControl->CurrentTitle() );
        
        const_cast< CXnNewstickerAdapter* >( this )->DrawText( title );             
        }
    }
    
// -----------------------------------------------------------------------------
// CXnNewstickerAdapter::DoEnterPowerSaveModeL
// Enter power save mode
// -----------------------------------------------------------------------------
void CXnNewstickerAdapter::DoEnterPowerSaveModeL( TModeEvent /*aEvent*/ )
    {     
    iPowerSaveMode = ETrue;
    
    Stop();
    }

// -----------------------------------------------------------------------------
// CXnNewstickerAdapter::DoExitPowerSaveModeL
// Exit power save mode
// -----------------------------------------------------------------------------
void CXnNewstickerAdapter::DoExitPowerSaveModeL( TModeEvent /*aEvent*/ )
    {
    iPowerSaveMode = EFalse;
    
    if ( IsVisible() )
        {
        Restart();
        }
    }

// -----------------------------------------------------------------------------
// CXnNewstickerAdapter::DrawText
// Text drawing function is selected by scrolling behaviour
// -----------------------------------------------------------------------------
void CXnNewstickerAdapter::DrawText( const TDesC& aText )
    {    
    CWindowGc& gc( SystemGc() );
    
    TRect rect( iNode.Rect() );
                  
    gc.SetPenColor( iTextColor );
    gc.UseFont( iFont );
    gc.SetUnderlineStyle( iUnderlining );
    gc.SetStrikethroughStyle( iStrikethrough );
           
    TInt textWidth( iFont->TextWidthInPixels( aText ) );
    TInt rectWidth( rect.Width() );
    
    switch ( iScrollBehaviour )
        {  
        case EScroll:
        case EScrollAlternate:
            {
            if ( !iRedraw || textWidth < rectWidth )                 
                {
                iMarqueeControl->Stop();
                DrawStaticText( gc, aText );                
                }
            else
                {
                iMarqueeControl->Start();

                iRedraw = !DrawMarqueeText( gc, aText );   
                                                   
                if ( !iRedraw )                    
                    {
                    // Marquee is in end
                    if ( iPeriodicTimer && !iPeriodicTimer->IsActive() )
                        {
                        iPeriodicTimer->Start(                
                            TTimeIntervalMicroSeconds32( 0 ),
                            TTimeIntervalMicroSeconds32( 0 ), 
                            TCallBack( PeriodicEventL, this ) );                         
                        }
                    
                    TBool endOfLoop;
                    
                    const TDesC& next( iControl->PeekNextTitle( endOfLoop ) );
                    
                    DrawStaticText( gc, next, endOfLoop );                    
                    }                
                }                        
            }
            break;            
        case EAlternate:
            {
            DrawStaticText( gc, aText );
            }
            break;            
        default:
            break;
        }
    }

// -----------------------------------------------------------------------------
// CXnNewstickerAdapter::RedrawCallback
// Callback function for marquee control
// -----------------------------------------------------------------------------
//
TInt CXnNewstickerAdapter::RedrawCallback( TAny* aPtr )
    {
    CXnNewstickerAdapter* self = static_cast< CXnNewstickerAdapter* >( aPtr );
    
    if ( self->iRedraw )
        {
        self->DrawNow();        
        }
            
    return self->iRedraw; 
    }

// -----------------------------------------------------------------------------
// CXnNewstickerAdapter::DoScroll
// 
// -----------------------------------------------------------------------------
//
void CXnNewstickerAdapter::DoScroll( TBool aEndOfLoop )
    {
    iMarqueeControl->Reset();
        
    iRedraw = EFalse;
    
    if ( !aEndOfLoop )
        {        
        Start();
        }
    else 
        {
        Stop();
        }
    }

// -----------------------------------------------------------------------------
// CXnNewstickerAdapter::DrawStatic
// Draws text directly to screen when scrolling is not needed
// -----------------------------------------------------------------------------
//
void CXnNewstickerAdapter::DrawStaticText( CWindowGc& aGc, 
    const TDesC& aText, TBool aTruncate ) const
    { 
    HBufC* text = HBufC::New( aText.Length() + KAknBidiExtraSpacePerLine );
    
    if ( text )
        {
        TRect rect = iNode.Rect();        
        TInt maxLength = rect.Width();
        
        TChar clipChar( aTruncate ? KEllipsis : 0xFFFF );
        
        TPtr ptr = text->Des();
        AknBidiTextUtils::ConvertToVisualAndClip(
                aText, ptr, *iFont, maxLength, maxLength, 
                AknBidiTextUtils::EImplicit, clipChar );
        
        aGc.DrawText( *text, rect, iTextBaseline,
                ( CGraphicsContext::TTextAlign )iTextAlignment );
        
        delete text;
        }
    }

// -----------------------------------------------------------------------------
// CXnNewstickerAdapter::DrawScrolling
// Draws scrolling text to screen via marquee control
// -----------------------------------------------------------------------------
//
TBool CXnNewstickerAdapter::DrawMarqueeText( CWindowGc& aGc, 
    const TDesC& aText ) const
    {
    TRect rect( iNode.Rect() );
    
    // returns true when all loops have been executed
    return iMarqueeControl->DrawText( aGc, rect, aText, iTextBaseline,
            ( CGraphicsContext::TTextAlign )iTextAlignment, *iFont );
    }


// End of file