videocontainer.h

symbian video 的 实现

/*
* ============================================================================
*  Name     : VideoContainer.h
*  Part of  : Video
*  Created  : 10/14/2003 by Forum Nokia
*  Description:
*     Declares container control for application.
*  Version  :
*  Copyright: Forum Corporation, 2003
* ============================================================================
*/

#ifndef VIDEOCONTAINER_H
#define VIDEOCONTAINER_H

#include <coecntrl.h>
#include <coemain.h>
   
class CAknDoubleNumberStyleListBox;
class CDesC16ArrayFlat;
class CDesC16Array;
class CFileListEngine;
class CEikButtonGroupContainer;

/**
 *  CVideoContainer  
 *  Container control class.
 */
class CVideoContainer : public CCoeControl, MCoeControlObserver
    {
    public: // Constructors and destructor
        
        /**
         * Symbian default constructor.
         * @param aRect Frame rectangle for container.
         */
        void ConstructL(const TRect& aRect);

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

    public: // New functions
        /**
         * Return Containers RWindow
         */
        inline RWindow& ClientWindow();

		/**
         * Return TRect of the video area
         */
        inline TRect VideoRect() const;

        /**
         * Return Containers RWsSession
         */
        inline RWsSession& ClientWsSession();

        /**
         * Return Containers CWsScreenDevice
         */
        inline CWsScreenDevice& ScreenDevice();

		/**
		 *	Get the total number of items in the list box
		 */
	    TInt GetNumOfItemsInListBox();

		/**
		 *	Get the current video file name in the list box
		 *  @param aFileName output to hold the selected video file name
		 */
	    void GetCurrentVideoFileNameL(TDes &aFileName);

    public: // Functions from base classes

        /** 
		 * See CCoeControl::OfferKeyEventL() 
		 */
		TKeyResponse OfferKeyEventL(const TKeyEvent& aKeyEvent,TEventCode aType);

    private: // Functions from base classes

        /**
         * From CoeControl,SizeChanged.
         */
        void SizeChanged();

        /**
         * From CoeControl,CountComponentControls.
         */
        TInt CountComponentControls() const;

        /**
         * From CCoeControl,ComponentControl.
         */
        CCoeControl* ComponentControl(TInt aIndex) const;

        /**
         * From CCoeControl,Draw.
         */
        void Draw(const TRect& aRect) const;
       	
		/**
		 * From MCoeControlObserver
		 * Acts upon changes in the hosted control's state. 
		 *
		 * @param	aControl	The control changing its state
		 * @param	aEventType	The type of control event 
		 */
        void HandleControlEventL(CCoeControl* aControl,TCoeEvent aEventType);
        
	private:

		/**
		 *	Set the File list
		 */
		void SetFileList(TInt aDirectory, TInt aSizeDate);

    private: //data

        TRect iVideoRect;
        CAknDoubleNumberStyleListBox* iListBox;
		CFileListEngine* iFileListEngine;
		CEikButtonGroupContainer* iCba;
    };

/*
-----------------------------------------------------------------------------

    inline RWindow& CVideoContainer::ClientWindow()

	Description: Returns client window handle
	Comments   :

    Return values: Returns client window handle

-----------------------------------------------------------------------------
*/
    inline RWindow& CVideoContainer::ClientWindow()
        {
        return Window();
        }

/*
-----------------------------------------------------------------------------

    inline TRect CVideoContainer::VideoRect() const

	Description: Returns video area
	Comments   :

    Return values: Returns video area

-----------------------------------------------------------------------------
*/
    inline TRect CVideoContainer::VideoRect() const
        {
        return iVideoRect;
        }

/*
-----------------------------------------------------------------------------

    inline RWsSession& CVideoContainer::ClientWsSession()

	Description: Returns client WsSession
	Comments   :

    Return values: Returns client WsSession

-----------------------------------------------------------------------------
*/
    inline RWsSession& CVideoContainer::ClientWsSession()
        {
        return ControlEnv()->WsSession();
        }

/*
-----------------------------------------------------------------------------

    inline CWsScreenDevice& CVideoContainer::ScreenDevice()

	Description: Returns client ScreenDevice
	Comments   :

    Return values: Returns client ScreenDevice

-----------------------------------------------------------------------------
*/
    inline CWsScreenDevice& CVideoContainer::ScreenDevice()
        {
        return *(ControlEnv()->ScreenDevice());
        }

#endif