/*
* Copyright (c) 2009 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: 
*
*/

#include <fbs.h>
#include <qtcore>
#include <qpixmap.h>
#include <thumbnailmanager.h>
#include <thumbnaildata.h>

#include "thumbnailmanager_qt.h"
#include "thumbnailmanager_p_qt.h"

ThumbnailManagerPrivate::ThumbnailManagerPrivate() : iThumbnailManager( NULL ), byteArray( NULL )
{
    TRAP_IGNORE(
        iThumbnailManager = CThumbnailManager::NewL( *this );
        iThumbnailManager->SetDisplayModeL( EColor64K );
        );
}

ThumbnailManagerPrivate::~ThumbnailManagerPrivate()
{
    if( iThumbnailManager ){
        delete iThumbnailManager;
    }
    if( byteArray ){
        delete byteArray;
    }
}

ThumbnailManager::QualityPreference ThumbnailManagerPrivate::qualityPreference() const
{
    return static_cast<ThumbnailManager::QualityPreference>( iThumbnailManager->QualityPreference() );
}

bool ThumbnailManagerPrivate::setQualityPreference( ThumbnailManager::QualityPreference qualityPreference )
{
    TRAPD( err, iThumbnailManager->SetQualityPreferenceL( static_cast<CThumbnailManager::TThumbnailQualityPreference>(qualityPreference) ));
    return ( err == KErrNone );
}

QSize ThumbnailManagerPrivate::thumbnailSize() const
{
    TSize tsize( iThumbnailManager->ThumbnailSize() );
    QSize qsize( tsize.iWidth, tsize.iHeight);
    return qsize;
}

bool ThumbnailManagerPrivate::setThumbnailSize( const QSize& thumbnailSize )
{
    TRAPD( err, iThumbnailManager->SetThumbnailSizeL( TSize( thumbnailSize.width(), thumbnailSize.height() ) ) );
    return ( err == KErrNone );
}

bool ThumbnailManagerPrivate::setThumbnailSize( ThumbnailManager::ThumbnailSize thumbnailSize )
{
    TThumbnailSize size(EUnknownThumbnailSize);
    switch( thumbnailSize ){
    case ThumbnailManager::ThumbnailSmall:
        size = EListThumbnailSize;
        break;
    case ThumbnailManager::ThumbnailMedium:
        size = EGridThumbnailSize;
        break;
    case ThumbnailManager::ThumbnailLarge:
        size = EFullScreenThumbnailSize;
        break;
    default:
        break;
    }

    TRAPD( err, iThumbnailManager->SetThumbnailSizeL( size ) );
    return ( err == KErrNone );
}

ThumbnailManager::ThumbnailMode ThumbnailManagerPrivate::mode() const
{
    return static_cast<ThumbnailManager::ThumbnailMode>( iThumbnailManager->Flags() );
}

bool ThumbnailManagerPrivate::setMode( ThumbnailManager::ThumbnailMode mode )
{
    TRAPD( err, iThumbnailManager->SetFlagsL( static_cast<CThumbnailManager::TThumbnailFlags>( mode ) ) );
    return ( err == KErrNone );
}

int ThumbnailManagerPrivate::getThumbnail( const QString& fileName, void* clientData, 
        int priority )
{
    int result( -1 );
    QString symbFileName( fileName );

    if( symbFileName.contains( "/" ) )
        symbFileName.replace( "/", "\\", Qt::CaseSensitive );
    
    RBuf buf;
    TRAP_IGNORE( 
        CleanupClosePushL( buf );
        buf.CreateL( symbFileName.length() );
        buf.Copy( symbFileName.utf16(), symbFileName.length() );
        CThumbnailObjectSource* objSrc = CThumbnailObjectSource::NewLC( buf, KNullDesC );
        result = iThumbnailManager->GetThumbnailL( *objSrc, clientData, priority );
        CleanupStack::PopAndDestroy( 2, &buf );
    );
    return result;
}

int ThumbnailManagerPrivate::getThumbnail( unsigned long int aThumbnailId, void* clientData, 
        int priority )
{
    int result( -1 );
    TRAP_IGNORE( result = iThumbnailManager->GetThumbnailL( aThumbnailId, clientData, priority ));
    return result;
}    

int ThumbnailManagerPrivate::setThumbnail( const QPixmap& source, const QString& fileName, 
        void * clientData, int priority )
{
    int result( -1 );
    RBuf file;
    _LIT( mime, "image/png" );

    if( !byteArray ){
        byteArray = new QByteArray();
    }
    QBuffer buffer( byteArray );
    buffer.open( QBuffer::ReadWrite );
    QDataStream dataStream( &buffer );

    dataStream << source;

    int offset = ( dataStream.version() >= 5 ? 4 : 0 );
    
    TRAP_IGNORE( 
        CleanupClosePushL( file );
        file.CreateL( fileName.length() );
        file.Copy( fileName.utf16(), fileName.length() );

        HBufC* mimetype = HBufC::NewLC( 9 );
        mimetype->Des() = mime();

        TPtrC8* ptr = new TPtrC8( reinterpret_cast<const TUint8*>( byteArray->data() + offset ), byteArray->count() - offset );
                
        CThumbnailObjectSource* objSrc = CThumbnailObjectSource::NewLC( ptr, *mimetype, file );
        result = iThumbnailManager->SetThumbnailL( *objSrc, clientData, priority );
        CleanupStack::PopAndDestroy( 3, &file );
    );
    return result;
}

void ThumbnailManagerPrivate::deleteThumbnails( const QString& fileName )
{
    QString symbFileName( fileName );

    if( symbFileName.contains( "/" ) )
        symbFileName.replace( "/", "\\", Qt::CaseSensitive );

    RBuf buf;
    TRAP_IGNORE( CleanupClosePushL( buf );
        buf.CreateL( symbFileName.length() );
        buf.Copy( symbFileName.utf16(), symbFileName.length() );
        CThumbnailObjectSource* objSrc = CThumbnailObjectSource::NewL( buf, KNullDesC );
        iThumbnailManager->DeleteThumbnails( *objSrc );
        CleanupStack::PopAndDestroy( &buf );
        delete objSrc;
    );
}

void ThumbnailManagerPrivate::deleteThumbnails( unsigned long int thumbnailId )
{
    iThumbnailManager->DeleteThumbnails( thumbnailId );
}

bool ThumbnailManagerPrivate::cancelRequest( int id )
{
    return ( iThumbnailManager->CancelRequest( id ) == KErrNone );
}

bool ThumbnailManagerPrivate::changePriority( int id, int newPriority )
{
    return ( iThumbnailManager->ChangePriority( id, newPriority ) == KErrNone );
}

QPixmap ThumbnailManagerPrivate::copyPixmap( CFbsBitmap* bitmap )
{
    TSize size = bitmap->SizeInPixels();
    int bytesPerLine = bitmap->ScanLineLength( size.iWidth,
            bitmap->DisplayMode() );
    const uchar* dataPtr = ( const uchar* ) bitmap->DataAddress();

    return QPixmap::fromImage( QImage(  dataPtr,
                                        size.iWidth,
                                        size.iHeight,
                                        bytesPerLine,
                                        QImage::Format_RGB16 ) );
}

void ThumbnailManagerPrivate::ThumbnailPreviewReady( MThumbnailData& /*aThumbnail*/,
    TThumbnailRequestId /*aId*/ )
{
}

void ThumbnailManagerPrivate::ThumbnailReady( TInt aError, MThumbnailData& aThumbnail,
    TThumbnailRequestId aId )
{
    if( byteArray ){
        delete byteArray;
        byteArray = NULL;
    }
    
    QPixmap* pixmap( NULL );

    if( aError == KErrNone ){
        pixmap = new QPixmap( copyPixmap( aThumbnail.Bitmap() ) );
    }else {
        pixmap = new QPixmap();
    }
    
    emit thumbnailReady( *pixmap, aThumbnail.ClientData(), aId, aError );
    delete pixmap;
}