doublebufferedarea.h

来自「series60 应用程序开发的源代码 series60 应用程序开发的源代码」· C头文件 代码 · 共 41 行

#ifndef DOUBLEBUFFEREDAREA_H
#define DOUBLEBUFFEREDAREA_H

#include <e32base.h>
#include <gdi.h>

//Forward Declarations
class CFbsBitmap;
class CFbsBitmapDevice;
class CFbsBitGc;

/**
 *
 * @class    CDoubleBufferedArea DoubleBufferedArea.h
 * @brief    This class provides all the components for creating offscreen areas for
 * double buffered drawing.
 *
 * Copyright (c) EMCC Software Ltd 2003
 * @version    1.0
 *
 */

class CDoubleBufferedArea : public CBase
{
    public:
        static CDoubleBufferedArea* NewL(TSize aSize, TDisplayMode aDisplayMode);
        static CDoubleBufferedArea* NewLC(TSize aSize, TDisplayMode aDisplayMode);
        ~CDoubleBufferedArea();

        const CFbsBitmap& GetDoubleBufferedAreaBitmap() const;
        CFbsBitGc& GetDoubleBufferedAreaContext() const;
        void ClearBufferedArea();

    private:
        CDoubleBufferedArea();
        void ConstructL(TSize aSize, TDisplayMode aDisplayMode);
        CFbsBitmap*       iAreaBitmap;
        CFbsBitmapDevice* iAreaBitmapDevice;
        CFbsBitGc*        iAreaBitmapContext;
};
#endif //DOUBLEBUFFEREDAREA_H