audioplayerview.h

series60 应用程序开发的源代码 series60 应用程序开发的源代码

#ifndef __AUDIOPLAYERVIEW_H__
#define __AUDIOPLAYERVIEW_H__

// INCLUDES
// System includes
#include <coecntrl.h> // CCoeControl

// User includes
#include "AudioPlayerEngine.h" // MAudioPlayerEngineObserver

// FORWARD DECLARATIONS
class CEikLabel;

// CLASS DECLARATION

/**
 *
 * @class    CAudioPlayerView AudioPlayerView.h
 * @brief    This class represents the view of AudioPlayer example and informs
 * the user of the current playing status
 *
 * Copyright (c) EMCC Software Ltd 2003
 * @version    1.0
 *
 */
class CAudioPlayerView :    public CCoeControl, public MAudioPlayerEngineObserver
{
    public:
        static CAudioPlayerView* NewL(const TRect& aRect);
        ~CAudioPlayerView();

    public:                // MAudioPlayerEngineObserver
        virtual void HandlePlayingStoppedL();

    public:
        void PlayToneL();
        void PlayWavL();
        void PlayMidiL();
        void PlayStreamL();
        void StopL();

    public:
        inline const CAudioPlayerEngine::TState& State() const;

    private:
        CAudioPlayerView();
        void ConstructL(const TRect& aRect);

    private:            // CCoeControl
        virtual void Draw(const TRect& aRect) const;
        virtual TInt CountComponentControls() const;
        virtual CCoeControl* ComponentControl(TInt aIndex) const;

    private: // member data
        CEikLabel*            iDisplayStatus;

        CAudioPlayerEngine*    iEngine;
};

// inline functions
const CAudioPlayerEngine::TState& CAudioPlayerView::State() const    { return iEngine->State(); }

#endif