graphicexameffectcontainer.h

国内著名嵌入式培训机构内部资料,内含一些实例代码,包括技术专题书籍

/*
============================================================================
 Name        : CGraphicExamEffectContainer from GraphicExamEffectContainer.h
 Author      : hou maoqing
 Version     :
 Copyright   : Copyright (c) Hou maoqing 2008
 Description : Declares container control for application.
============================================================================
*/

#ifndef GRAPHICEXAMEFFECTCONTAINER_H
#define GRAPHICEXAMEFFECTCONTAINER_H

// INCLUDES
#include <coecntrl.h>
#include <MdaImageConverter.h>	// MMdaImageUtilObserver

// FORWARD DECLARATIONS
class CMdaBitmapScaler;

// CLASS DECLARATION

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

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

    public: // New functions    	
    	void ScaleZoomInImageL();
    	void ScaleZoomOutImageL();

    protected:	// From MMdaImageUtilObserver
    	void MiuoConvertComplete(TInt aError);
    	void MiuoCreateComplete(TInt aError);
    	void MiuoOpenComplete(TInt aError);

    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: //data
    	CFbsBitmap* iOffScreenBitmap;
    	CFbsBitmapDevice* iOffScreenBitmapDevice;
    	CFbsBitGc* iOffScreenBitmapGc;
    	
    	CFbsBitmap* iSoundSvg;
    	
    	CMdaBitmapScaler* iScaler;
    	TInt m_nScaler;
    };

#endif

// End of File