imageconverterappui.h

Symbian OS 图片转换程序源代码 可以学习一下

/*
* ============================================================================
*  Name     : CImageConverterAppUi from ImageConverterAppUi.h
*  Part of  : ImageConverter
*  Created  : 25.11.2003 by Forum Nokia
*  Description:
*     Declares UI class for application.
*  Version  :
*  Copyright: Nokia Corporation
* ============================================================================
*/

#ifndef IMAGECONVERTERAPPUI_H
#define IMAGECONVERTERAPPUI_H

// INCLUDES
#include <eikapp.h>
#include <eikdoc.h>
#include <e32std.h>
#include <coeccntx.h>
#include <aknappui.h>

#include "ImageConverterEngine.h"

// FORWARD DECLARATIONS
class CImageConverterContainer;

// CLASS DECLARATION

/**
* Application UI class.
* Provides support for the following features:
* - EIKON control architecture
* 
*/
class CImageConverterAppUi : public CAknAppUi, MConverterController
    {
    public: // // Constructors and destructor

        /**
        * EPOC default constructor.
        */      
        void ConstructL();

        /**
        * Destructor.
        */      
        ~CImageConverterAppUi();
        
    public: // New functions

    public: // Functions from base classes
		// from MConverterController
		void NotifyCompletion( TInt aErr );

    private:
        // From MEikMenuObserver
        void DynInitMenuPaneL(TInt aResourceId,CEikMenuPane* aMenuPane);

    private:
        /**
        * From CEikAppUi, takes care of command handling.
        * @param aCommand command to be handled
        */
        void HandleCommandL(TInt aCommand);

        /**
        * From CEikAppUi, handles key events.
        * @param aKeyEvent Event to handled.
        * @param aType Type of the key event. 
        * @return Response code (EKeyWasConsumed, EKeyWasNotConsumed). 
        */
        virtual TKeyResponse HandleKeyEventL(
            const TKeyEvent& aKeyEvent,TEventCode aType);

	private: // internal methods
		/**
		* Handles Open menu command
		*/
		void HandleOpen();
		/**
		* Handles Save as menu command
		*/
		void HandleSaveAs();
		/**
		* Handles Info menu command
		*/
		void HandleInfo();
		/**
		* Handles Rotate menu command
		*/
		void HandleRotate();
		/**
		* Handles Scale menu command
		*/
		void HandleScale();

    private: //Data
		/*! @var iImageLoaded true if an image has been opened/decoded
		and is to be shown. 
		Used to enable/disable save as and info menu commands */
		TBool iImageLoaded;
        CImageConverterContainer* iAppContainer; 

		/*! @var iConverter the actuall calls to ICL are done from this engine 
		*/
		CImageConverterEngine* iConverter;

	};

#endif

// End of File