gridcontainer.h

symbian中讲述的一个有关bookengine的简单例子

/*
* ============================================================================
*  Name     : CGridContainer from CCoeControl, MCoeControlObserver
*  Part of  : MyHello
*  Copyright (c) 2003 Nokia. All rights reserved.
* ============================================================================
*/

#ifndef GRIDCONTAINER_H
#define GRIDCONTAINER_H

// INCLUDES
#include <aknview.h>
#include "common.h"

#include <AknGridView.h>	//for CAknGridView

// CLASS DECLARATION
class CAknGrid;
class CAknGridView;

enum TContentType
{
	EContainText = 0x0001,         // contain only text
	EContainGraphic = 0x0002,      // contain only graphic
	EContainBoth = 0x0004          // contain both text and graphic
};

enum TAknExGridGridType
{
	EAknExGridSelectionGrid = 0,    // Show grid as "Selection Grid"
	EAknExGridMarkableGrid         // Show grid as "Markable Grid"
};



/**
*  CGridContainer  container control class.
*  
*/
class CGridContainer : public CCoeControl, MCoeControlObserver
    {
    public: // Constructors and destructor
        /**
        * C++ default constructor.
        */
        CGridContainer();

        /**
        * EPOC default constructor.
        * @param aRect Frame rectangle for container.
        */
        void ConstructL(const TRect& aRect);

        /**
        * Destructor.
        */
        virtual ~CGridContainer();

    public: // New functions
        /**
        * Change focussed control using specified command.
        * @param aCommand Command to be used.
        */
        void FocusTo(TInt aCommand);

    private: // Functions from base classes

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

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

       /**
        * From CCoeControl,ComponentControl.
        * @param aIndex of control
        */
        CCoeControl* ComponentControl(TInt aIndex) const;

       /**
        * From CCoeControl, Draw client rect.
        * @param aRect Frame rectangle for container.
        */
        void Draw(const TRect& aRect) const;

        /**
         * From CCoeControl, Handles key event.
         * @param aKeyEvent The key event.
         * @param aType The type of the event.
         * @return Indicates whether or not the key event was
         *           used by this control.
         */
         TKeyResponse OfferKeyEventL(const TKeyEvent& aKeyEvent,
                                    TEventCode aType);

    private:
       /**
        * From MCoeControlObserver, Handles an event of type aEventType
        * @param aControl Pointer to component control
        * @param aEventType Event Code
        */
        void HandleControlEventL(CCoeControl* /*aControl*/,
                                    TCoeEvent /*aEventType*/);
        
    private: //data
		CAknGrid* m_pGrid;

		TBool			iVerticalOrientation;	// params used by SetGridLayoutL()
		TBool			iLeftToRight;
		TBool			iTopToBottom;
		TInt			iNumOfColumns;
		TInt			iNumOfRows;
		TInt			iContentType;
		TSize			iSizeOfItems;
		TInt			iNumOfItems;
		TBool			iInstantsCreated;      // indicate wether the Select or menu grid is using
		
		CAknGridView::TScrollingType iVerticalScrollingType; // Scrolling type
		CAknGridView::TScrollingType iHorizontalScrollingType; 
		
		TAknExGridGridType          m_pGridType;
		TInt						m_nFontWidth;

	private:
		void LoadGraphicsL();
		void AddDataL();
		void ApplySelGridGraphicStyleL();
    };

#endif // GRIDCONTAINER_H

// End of File