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

//

// LCDOutput.h

//

// The CLCDOutput class manages LCD hardware enumeration and screen

// management.

// 

// Logitech LCD SDK

//

// Copyright 2005 Logitech Inc.

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

#ifndef _CLCDOUTPUT_H_INCLUDED_ 

#define _CLCDOUTPUT_H_INCLUDED_ 

#include "LCDManager.h"

#include "lglcd.h"

#include "vector"

using namespace std;

typedef vector <CLCDManager*> LCD_MGR_LIST;

typedef LCD_MGR_LIST::iterator LCD_MGR_LIST_ITER;

class CLCDOutput : public CLCDManager

{

public:

    CLCDOutput();

    virtual ~CLCDOutput();

    void AddScreen(CLCDManager* pScreen);

    void LockScreen(CLCDManager* pScreen);

    void UnlockScreen();

    BOOL IsLocked();

    BOOL IsOpened();

    void SetAsForeground(BOOL bSetAsForeground);

    void SetScreenPriority(DWORD priority);

    DWORD GetScreenPriority();

    HRESULT Initialize(lgLcdConnectContext* pContext, BOOL bUseWindow = FALSE);

    // returns TRUE if a new display was enumerated

    BOOL HasHardwareChanged(void);

    // CLCDBase

    virtual HRESULT Initialize();

    virtual HRESULT Draw();

    virtual void Update(DWORD dwTimestamp);

    virtual void Shutdown(void);

    // CLCDManager

    lgLcdBitmap160x43x1 *GetLCDScreen(void);

    BITMAPINFO *GetBitmapInfo(void);

protected:

    void ActivateScreen(CLCDManager* pScreen);

    void ReadButtons();

    void HandleButtonState(DWORD dwButtonState, DWORD dwButton);

    void HandleErrorFromAPI(DWORD dwRes);

    void CloseAndDisconnect();

    virtual void OnLCDButtonDown(int nButton);

    virtual void OnLCDButtonUp(int nButton);

protected:

    virtual void OnScreenExpired(CLCDManager* pScreen);

    virtual void OnClosingDevice(int hDevice);

    virtual void OnDisconnecting(int hConnection);

protected:

    CLCDManager* m_pActiveScreen;

    // list 

    LCD_MGR_LIST m_LCDMgrList;

    void EnumerateDevices();

    int m_hConnection;

    int m_hDevice;

    DWORD m_nPriority;

    BOOL m_bLocked, m_bDisplayLocked;

    DWORD m_dwButtonState;

    BOOL m_bSetAsForeground;

    lgLcdConnectContext m_lcdConnectCtx;

};

#endif // !_CLCDOUTPUT_H_INCLUDED_ 

//** end of CLCDOutput.h *************************************************