imageloaderengine.h

《基于Symbian OS的手机开发与应用实践》这本书的配套源码。

/*
* ============================================================================
*  Name     : CImageLoaderEngine from ImageLoaderEngine.h
*  Part of  : ImageLoader
*  Created  : 31.01.2006 by ToBeReplacedByAuthor
*  Description:
*     Declares engine for application.
*  Version  :
*  Copyright: ToBeReplacedByCopyright
* ============================================================================
*/

#ifndef IMAGELOADERENGINE_H
#define IMAGELOADERENGINE_H

// INCLUDES
#include <e32std.h>
#include <e32base.h>
#include <imageconversion.h>

// CONSTANTS

// FORWARD DECLARATIONS
class CFbsBitmap;

// CLASS DECLARATION

/**
*  CImageLoaderEngine application class.
*/
class CImageLoaderEngine : public CActive
    {
    public: // observer interface
        class MObserver
            {
            public:
                virtual void OnCompleteL(CFbsBitmap* aBitmap, TInt aError) = 0;
            };

    public: // Constructors and destructor
        /**
        * Two-phased constructor.
        */
        static CImageLoaderEngine* NewL(MObserver& aObserver);

        /**
        * Destructor.
        */
        ~CImageLoaderEngine();

    public: // New functions
        void LoadL(const TFileName& aFileName);

    protected: // Functions from CActive
        void RunL();
        void DoCancel();

    private: // New functions
        /**
        * EPOC default constructor.
        */
        CImageLoaderEngine(MObserver& aObserver);
        void ConstructL();

    private: // member variables
        MObserver& iObserver;
        CImageDecoder* iImageDecoder;
        CFbsBitmap* iBitmap;
    };

#endif

// End of File