Subversion Repositories spk

//************************************************************************

//

// LCDScrollingText.h

//

// The CLCDScrollingText class draws scrolling text onto the LCD.

// 

// Logitech LCD SDK

//

// Copyright 2005 Logitech Inc.

//************************************************************************

#ifndef _LCDSCROLLINGTEXT_H_INCLUDED_ 

#define _LCDSCROLLINGTEXT_H_INCLUDED_ 

#include "LCDBase.h"

#include "LCDText.h"

class CLCDScrollingText : public CLCDText

{

public:

    CLCDScrollingText();

    virtual ~CLCDScrollingText();

    // CLCDBase

    virtual HRESULT Initialize(void);

    virtual void ResetUpdate(void);

    // CLCDText

    virtual void SetText(LPCTSTR szText);

    void SetStartDelay(DWORD dwMilliseconds);

    void SetEndDelay(DWORD dwMilliseconds);

    void EnableRepeat(BOOL bEnable);

    void SetSpeed(DWORD dwSpeed);

    enum eSCROLL_DIR { SCROLL_HORZ, SCROLL_VERT};

    void SetScrollDirection(eSCROLL_DIR eScrollDir);

    eSCROLL_DIR GetScrollDirection();

    BOOL IsScrollingDone();

protected:

    virtual void OnUpdate(DWORD dwTimestamp);

    virtual void OnDraw(CLCDGfx &rGfx);

private:

    enum eSCROLL_STATES { STATE_START_DELAY, STATE_SCROLL, STATE_END_DELAY, STATE_DONE};

    DWORD m_dwEllapsedTime; // ellapsed time in state

    DWORD m_dwStartDelay;   // milliseconds

    DWORD m_dwEndDelay;     // milliseconds

    DWORD m_dwSpeed;        // pixels/second

    DWORD m_dwLastUpdate;   // milliseconds

    BOOL  m_bRepeat;        // repeat

    int m_nScrollingDistance;

    float m_fTotalDistance;

    eSCROLL_DIR m_eScrollDir;

    eSCROLL_STATES m_eState;

};

#endif // !_LCDSCROLLINGTEXT_H_INCLUDED_ 

//** end of LCDScrollingText.h *******************************************