bitmapscalerengine.cpp

《基于Symbian OS的手机开发与应用实践》这本书的配套源码。

/*
* ============================================================================
*  Name     : CBitmapScalerEngine from BitmapScalerEngine.cpp
*  Part of  : BitmapScaler
*  Created  : 30.01.2006 by ToBeReplacedByAuthor
*  Implementation notes:
*     
*  Version  :
*  Copyright: ToBeReplacedByCopyright
* ============================================================================
*/

// INCLUDE FILES
#include "BitmapScalerEngine.h"


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

// Two-phased constructor.
CBitmapScalerEngine* CBitmapScalerEngine::NewL(MObserver& aObserver)
    {
    CBitmapScalerEngine* self = new(ELeave) CBitmapScalerEngine(aObserver);
    CleanupStack::PushL( self );
    self->ConstructL();
    CleanupStack::Pop();
    return self; 
    }

// destructor
CBitmapScalerEngine::~CBitmapScalerEngine()
    {
    delete iBitmapScaler;
    }

// constructor
CBitmapScalerEngine::CBitmapScalerEngine(MObserver& aObserver ) : 
    CActive(EPriorityStandard), iObserver(aObserver)
    {
    }

// EPOC default constructor can leave.
void CBitmapScalerEngine::ConstructL()
    {
    iBitmapScaler = CBitmapScaler::NewL();
    CActiveScheduler::Add( this );
    }

void CBitmapScalerEngine::RunL()
    {
    iObserver.OnCompleteL(iStatus.Int());
    }

void CBitmapScalerEngine::DoCancel()
    {
    iBitmapScaler->Cancel();
    }

void CBitmapScalerEngine::Scale(CFbsBitmap& aSrcBitmap, CFbsBitmap& aTgtBitmap)
    {
    Cancel();
    iBitmapScaler->Scale(&iStatus, aSrcBitmap, aTgtBitmap);
    SetActive();
    }

// End of File