FvOverlay.h

[詳解]

//  $Revision: 1.3 $
/*
    @file   FvOverlay.h
    @brief  Grafics device overlay class
    @author FAST Corporation
*/

#ifndef _FVOVERLAY_H_INCLUDED_
#define _FVOVERLAY_H_INCLUDED_

#include "FvObject.h"
#include "MultiData/FvList.h"
#include "Data/FvImage.h"
#include "Data/FvPattern.h"
#include "FvDisplayObject.h"

#pragma pack(push,_FVCL_PACKING)

namespace FVCL
{
namespace GDI
{

class FVCL_API CFvOverlay : public CFvObject
{
public:
    CFvOverlay();
    virtual ~CFvOverlay();

    virtual INT Play( HDC dc, RECT region ) const;

    FVCL::GDI::CFvGdiRectangle GetEffectiveRect() const;
    FVCL::GDI::CFvGdiRectangle GetVisibleRect() const;

    FVCL::Data::CFvPoint DPtoIP( LONG dsp_x, LONG dsp_y, INT mode = FVCL::GDI::ScalingMode::TopLeft ) const;
    POINT IPtoDP( DOUBLE img_x, DOUBLE img_y, INT mode = FVCL::GDI::ScalingMode::TopLeft ) const;

    bool SetActive( bool active );
    bool GetActive() const;

    bool SetEnable( bool enable );
    bool GetEnable() const;

    bool SetScaling( bool scaling );
    bool GetScaling() const;

    bool SetScalingMode( INT mode );
    INT GetScalingMode() const;

    // obsolete ---
    CFvGdiFigure* DrawFigure( const CFvGdiFigure& figure );
    CFvGdiFigure* DrawFigure( const CFvDataObject& data, const CFvGdiPen* pen=NULL, const CFvGdiBrush* brush=NULL );
    CFvGdiImage*  DrawImage( const FVCL::Data::CFvImage& image, const FVCL::Data::CFvPoint& position, UCHAR alpha=0xFF );
    CFvGdiString* DrawString( LPCTSTR text, const FVCL::Data::CFvPoint& position, COLORREF color, UINT align, const CFvGdiFont* font=NULL );

    bool DeleteFigure( CFvGdiFigure* figure );
    bool ClearFigures();

    UINT GetFigureCount() const;
    INT GetFigureIndex( CFvGdiFigure* figure ) const;
    CFvGdiFigure* GetFigure( INT index ) const;

    bool ChangeFigureOrder( CFvGdiFigure* figure, INT direct );
    bool SwapFigureOrder( CFvGdiFigure* figure1, CFvGdiFigure* figure2 );
    // --- obsolete

public:
    FVCL::CFvList<FVCL::GDI::CFvGdiFigure*> Figures;

    FVCL::Data::CFvImage const*     Image;
    mutable SIZE                    ImageSize;
    FVCL::Data::CFvImage const*     AttachedImage;
    FVCL::GDI::CFvGdiRectangle      DisplayRect;
    FVCL::GDI::CFvGdiPoint          ControlPoint;
    POINT                           CursorPosition;
    DOUBLE                          Magnification;
    INT                             PixelMode;
    UINT                            DisplayChannel;

protected:
    bool                            m_Active;
    bool                            m_Enable;
    bool                            m_Scaling;
    INT                             m_ScalingMode;
    FVCL::CFvList<CFvGdiFigure*>    m_Figures;

private:
    bool    m_SubpixelMode;
    FVCL_API friend bool SubpixelMode(const FVCL::GDI::CFvOverlay& overlay);
    FVCL_API friend void SubpixelMode(FVCL::GDI::CFvOverlay& overlay, bool value);
};

}   // GDI

}   // FVCL

#pragma pack(pop)

#endif  // _FVOVERLAY_H_INCLUDED_