dxutgui.h

在GPU上实现数值模拟技术（线性方程组）的通用架构

        int    m_nBufferSize;   // Size of the buffer allocated, in characters
        int    m_nTextSize;     // Size of the text in buffer excluding
                                //   NULL terminator, in characters
        // Uniscribe-specific
        int  m_iFont;           // Font index of this buffer
        bool m_bAnalyseRequired;// True if the string has changed since last analysis.
        SCRIPT_STRING_ANALYSIS m_Analysis;  // Analysis for the current string

    private:
        bool Grow( int nNewSize = -1 );

        // Uniscribe -- Analyse() analyses the string in the buffer
        HRESULT Analyse();

    public:
        CUniBuffer( int nInitialSize = 1 );
        ~CUniBuffer();
        int GetBufferSize() { return m_nBufferSize; }
        bool SetBufferSize( int nSize );
        int GetTextSize() { return m_nTextSize; }
        const WCHAR *GetBuffer() { return m_pwszBuffer; }
        const WCHAR &operator[]( int n ) const { return m_pwszBuffer[n]; }
        WCHAR &operator[]( int n );
        int GetFontIndex() { return m_iFont; }
        void SetFontIndex( int iFont ) { m_iFont = iFont; }
        void Clear();

        // Inserts the char at specified index.
        // If nIndex == -1, insert to the end.
        bool InsertChar( int nIndex, WCHAR wChar );

        // Removes the char at specified index.
        // If nIndex == -1, remove the last char.
        bool RemoveChar( int nIndex );

        // Inserts the first nCount characters of the string pStr at specified index.
        // If nCount == -1, the entire string is inserted.
        // If nIndex == -1, insert to the end.
        bool InsertString( int nIndex, const WCHAR *pStr, int nCount = -1 );

        bool SetText( LPCWSTR wszText );

        // Uniscribe
        HRESULT CPtoX( int nCP, BOOL bTrail, int *pX );
        HRESULT XtoCP( int nX, int *pCP, int *pnTrail );
        void GetPriorItemPos( int nCP, int *pPrior );
        void GetNextItemPos( int nCP, int *pPrior );
    };

protected:
    void PlaceCaret( int nCP );
    void DeleteSelectionText();
    void ResetCaretBlink();
    void CopyToClipboard();
    void PasteFromClipboard();

    CUniBuffer m_Buffer;     // Buffer to hold text
    int      m_nBorder;      // Border of the window
    int      m_nSpacing;     // Spacing between the text and the edge of border
    RECT     m_rcText;       // Bounding rectangle for the text
    RECT     m_rcRender[9];  // Convenient rectangles for rendering elements
    double   m_dfBlink;      // Caret blink time in milliseconds
    double   m_dfLastBlink;  // Last timestamp of caret blink
    bool     m_bCaretOn;     // Flag to indicate whether caret is currently visible
    int      m_nCaret;       // Caret position, in characters
    bool     m_bInsertMode;  // If true, control is in insert mode. Else, overwrite mode.
    int      m_nSelStart;    // Starting position of the selection. The caret marks the end.
    int      m_nFirstVisible;// First visible character in the edit control
    D3DCOLOR m_TextColor;    // Text color
    D3DCOLOR m_SelTextColor; // Selected text color
    D3DCOLOR m_SelBkColor;   // Selected background color
    D3DCOLOR m_CaretColor;   // Caret color

    // Mouse-specific
    bool m_bMouseDrag;       // True to indicate drag in progress

    // Static
    static bool     s_bHideCaret;   // If true, we don't render the caret.
};


//-----------------------------------------------------------------------------
// IME-enabled EditBox control
//-----------------------------------------------------------------------------
#define IMM32_DLLNAME L"\\imm32.dll"
#define VER_DLLNAME L"\\version.dll"
#define MAX_CANDLIST 10
#define MAX_COMPSTRING_SIZE 256

class CDXUTIMEEditBox : public CDXUTEditBox
{
    friend class CExternalApiInitializer;

    static void InitializeImm();
    static void UninitializeImm();

    static HINSTANCE s_hDllImm32;  // IMM32 DLL handle
    static HINSTANCE s_hDllVer;    // Version DLL handle
    static HIMC      s_hImcDef;    // Default input context

protected:
    // Empty implementation of the IMM32 API
    static INPUTCONTEXT* WINAPI Dummy_ImmLockIMC( HIMC ) { return NULL; }
    static BOOL WINAPI Dummy_ImmUnlockIMC( HIMC ) { return FALSE; }
    static LPVOID WINAPI Dummy_ImmLockIMCC( HIMCC ) { return NULL; }
    static BOOL WINAPI Dummy_ImmUnlockIMCC( HIMCC ) { return FALSE; }
    static BOOL WINAPI Dummy_ImmDisableTextFrameService( DWORD ) { return TRUE; }
    static LONG WINAPI Dummy_ImmGetCompositionStringW( HIMC, DWORD, LPVOID, DWORD ) { return IMM_ERROR_GENERAL; }
    static DWORD WINAPI Dummy_ImmGetCandidateListW( HIMC, DWORD, LPCANDIDATELIST, DWORD ) { return 0; }
    static HIMC WINAPI Dummy_ImmGetContext( HWND ) { return NULL; }
    static BOOL WINAPI Dummy_ImmReleaseContext( HWND, HIMC ) { return FALSE; }
    static HIMC WINAPI Dummy_ImmAssociateContext( HWND, HIMC ) { return NULL; }
    static BOOL WINAPI Dummy_ImmGetOpenStatus( HIMC ) { return 0; }
    static BOOL WINAPI Dummy_ImmSetOpenStatus( HIMC, BOOL ) { return 0; }
    static BOOL WINAPI Dummy_ImmGetConversionStatus( HIMC, LPDWORD, LPDWORD ) { return 0; }
    static HWND WINAPI Dummy_ImmGetDefaultIMEWnd( HWND ) { return NULL; }
    static UINT WINAPI Dummy_ImmGetIMEFileNameA( HKL, LPSTR, UINT ) { return 0; }
    static UINT WINAPI Dummy_ImmGetVirtualKey( HWND ) { return 0; }
    static BOOL WINAPI Dummy_ImmNotifyIME( HIMC, DWORD, DWORD, DWORD ) { return FALSE; }
    static BOOL WINAPI Dummy_ImmSetConversionStatus( HIMC, DWORD, DWORD ) { return FALSE; }
    static BOOL WINAPI Dummy_ImmSimulateHotKey( HWND, DWORD ) { return FALSE; }
    static BOOL WINAPI Dummy_ImmIsIME( HKL ) { return FALSE; }

    // Traditional Chinese IME
    static UINT WINAPI Dummy_GetReadingString( HIMC, UINT, LPWSTR, PINT, BOOL*, PUINT ) { return 0; }
    static BOOL WINAPI Dummy_ShowReadingWindow( HIMC, BOOL ) { return FALSE; }

    // Verion library imports
    static BOOL APIENTRY Dummy_VerQueryValueA( const LPVOID, LPSTR, LPVOID *, PUINT ) { return 0; }
    static BOOL APIENTRY Dummy_GetFileVersionInfoA( LPSTR, DWORD, DWORD, LPVOID ) { return 0; }
    static DWORD APIENTRY Dummy_GetFileVersionInfoSizeA( LPSTR, LPDWORD ) { return 0; }

    // Function pointers: IMM32
    static INPUTCONTEXT* (WINAPI * _ImmLockIMC)( HIMC );
    static BOOL (WINAPI * _ImmUnlockIMC)( HIMC );
    static LPVOID (WINAPI * _ImmLockIMCC)( HIMCC );
    static BOOL (WINAPI * _ImmUnlockIMCC)( HIMCC );
    static BOOL (WINAPI * _ImmDisableTextFrameService)( DWORD );
    static LONG (WINAPI * _ImmGetCompositionStringW)( HIMC, DWORD, LPVOID, DWORD );
    static DWORD (WINAPI * _ImmGetCandidateListW)( HIMC, DWORD, LPCANDIDATELIST, DWORD );
    static HIMC (WINAPI * _ImmGetContext)( HWND );
    static BOOL (WINAPI * _ImmReleaseContext)( HWND, HIMC );
    static HIMC (WINAPI * _ImmAssociateContext)( HWND, HIMC );
    static BOOL (WINAPI * _ImmGetOpenStatus)( HIMC );
    static BOOL (WINAPI * _ImmSetOpenStatus)( HIMC, BOOL );
    static BOOL (WINAPI * _ImmGetConversionStatus)( HIMC, LPDWORD, LPDWORD );
    static HWND (WINAPI * _ImmGetDefaultIMEWnd)( HWND );
    static UINT (WINAPI * _ImmGetIMEFileNameA)( HKL, LPSTR, UINT );
    static UINT (WINAPI * _ImmGetVirtualKey)( HWND );
    static BOOL (WINAPI * _ImmNotifyIME)( HIMC, DWORD, DWORD, DWORD );
    static BOOL (WINAPI * _ImmSetConversionStatus)( HIMC, DWORD, DWORD );
    static BOOL (WINAPI * _ImmSimulateHotKey)( HWND, DWORD );
    static BOOL (WINAPI * _ImmIsIME)( HKL );

    // Function pointers: Traditional Chinese IME
    static UINT (WINAPI * _GetReadingString)( HIMC, UINT, LPWSTR, PINT, BOOL*, PUINT );
    static BOOL (WINAPI * _ShowReadingWindow)( HIMC, BOOL );

    // Function pointers: Verion library imports
    static BOOL (APIENTRY * _VerQueryValueA)( const LPVOID, LPSTR, LPVOID *, PUINT );
    static BOOL (APIENTRY * _GetFileVersionInfoA)( LPSTR, DWORD, DWORD, LPVOID );
    static DWORD (APIENTRY * _GetFileVersionInfoSizeA)( LPSTR, LPDWORD );

public:
    CDXUTIMEEditBox( CDXUTDialog *pDialog = NULL );
    virtual ~CDXUTIMEEditBox();

    static  HRESULT StaticOnCreateDevice();
    static  bool StaticMsgProc( UINT uMsg, WPARAM wParam, LPARAM lParam );

    static  void EnableImeSystem( bool bEnable );

    virtual void Render( IDirect3DDevice9* pd3dDevice, float fElapsedTime );
    virtual bool MsgProc( UINT uMsg, WPARAM wParam, LPARAM lParam );
    virtual bool HandleMouse( UINT uMsg, POINT pt, WPARAM wParam, LPARAM lParam );
    virtual void UpdateRects();
    virtual void OnFocusIn();
    virtual void OnFocusOut();

    void PumpMessage();

    virtual void RenderCandidateReadingWindow( IDirect3DDevice9* pd3dDevice, float fElapsedTime, bool bReading );
    virtual void RenderComposition( IDirect3DDevice9* pd3dDevice, float fElapsedTime );
    virtual void RenderIndicator( IDirect3DDevice9* pd3dDevice, float fElapsedTime );

protected:
    static WORD GetLanguage() { return LOWORD( s_hklCurrent ); }
    static WORD GetPrimaryLanguage() { return PRIMARYLANGID( LOWORD( s_hklCurrent ) ); }
    static WORD GetSubLanguage() { return SUBLANGID( LOWORD( s_hklCurrent ) ); }
    static void SendKey( BYTE nVirtKey );
    static DWORD GetImeId( UINT uIndex = 0 );
    static void CheckInputLocale();
    static void CheckToggleState();
    static void SetupImeApi();
    static void ResetCompositionString();
    void TruncateCompString( bool bUseBackSpace = true, int iNewStrLen = 0 );
    void FinalizeString( bool bSend );
    static void GetReadingWindowOrientation( DWORD dwId );
    static void GetPrivateReadingString();

    void SendCompString();

protected:
    enum { INDICATOR_NON_IME, INDICATOR_CHS, INDICATOR_CHT, INDICATOR_KOREAN, INDICATOR_JAPANESE };
    enum IMESTATE { IMEUI_STATE_OFF, IMEUI_STATE_ON, IMEUI_STATE_ENGLISH };

    struct CCandList
    {
        WCHAR awszCandidate[MAX_CANDLIST][256];
        CUniBuffer HoriCand; // Candidate list string (for horizontal candidate window)
        int   nFirstSelected; // First character position of the selected string in HoriCand
        int   nHoriSelectedLen; // Length of the selected string in HoriCand
        DWORD dwCount;       // Number of valid entries in the candidate list
        DWORD dwSelection;   // Currently selected candidate entry relative to page top
        DWORD dwPageSize;
        int   nReadingError; // Index of the error character
        bool  bShowWindow;   // Whether the candidate list window is visible
        RECT  rcCandidate;   // Candidate rectangle computed and filled each time before rendered
    };

    struct CInputLocale
    {
        HKL   m_hKL;            // Keyboard layout
        WCHAR m_wszLangAbb[3];  // Language abbreviation
        WCHAR m_wszLang[64];    // Localized language name
    };

    // Application-wide data
    static HKL     s_hklCurrent;          // Current keyboard layout of the process
    static bool    s_bVerticalCand;       // Indicates that the candidates are listed vertically
    static LPWSTR  s_wszCurrIndicator;    // Points to an indicator string that corresponds to current input locale
    static WCHAR   s_aszIndicator[5][3];  // String to draw to indicate current input locale
    static bool    s_bInsertOnType;       // Insert the character as soon as a key is pressed (Korean behavior)
    static HINSTANCE s_hDllIme;           // Instance handle of the current IME module
    static IMESTATE  s_ImeState;          // IME global state
    static bool    s_bEnableImeSystem;    // Whether the IME system is active
    static POINT   s_ptCompString;        // Composition string position. Updated every frame.
    static int     s_nCompCaret;          // Caret position of the composition string
    static int     s_nFirstTargetConv;    // Index of the first target converted char in comp string.  If none, -1.
    static CUniBuffer s_CompString;       // Buffer to hold the composition string (we fix its length)
    static BYTE    s_abCompStringAttr[MAX_COMPSTRING_SIZE];
    static DWORD   s_adwCompStringClause[MAX_COMPSTRING_SIZE];
    static WCHAR   s_wszReadingString[32];// Used only with horizontal reading window (why?)
    static CCandList s_CandList;          // Data relevant to the candidate list
    static bool    s_bShowReadingWindow;  // Indicates whether reading window is visible
    static bool    s_bHorizontalReading;  // Indicates whether the reading window is vertical or horizontal
    static bool    s_bChineseIME;
    static CGrowableArray< CInputLocale > s_Locale; // Array of loaded keyboard layout on system

    // Color of various IME elements
    D3DCOLOR       m_ReadingColor;        // Reading string color
    D3DCOLOR       m_ReadingWinColor;     // Reading window color
    D3DCOLOR       m_ReadingSelColor;     // Selected character in reading string
    D3DCOLOR       m_ReadingSelBkColor;   // Background color for selected char in reading str
    D3DCOLOR       m_CandidateColor;      // Candidate string color
    D3DCOLOR       m_CandidateWinColor;   // Candidate window color
    D3DCOLOR       m_CandidateSelColor;   // Selected candidate string color
    D3DCOLOR       m_CandidateSelBkColor; // Selected candidate background color
    D3DCOLOR       m_CompColor;           // Composition string color
    D3DCOLOR       m_CompWinColor;        // Composition string window color
    D3DCOLOR       m_CompCaretColor;      // Composition string caret color
    D3DCOLOR       m_CompTargetColor;     // Composition string target converted color
    D3DCOLOR       m_CompTargetBkColor;   // Composition string target converted background
    D3DCOLOR       m_CompTargetNonColor;  // Composition string target non-converted color
    D3DCOLOR       m_CompTargetNonBkColor;// Composition string target non-converted background
    D3DCOLOR       m_IndicatorImeColor;   // Indicator text color for IME
    D3DCOLOR       m_IndicatorEngColor;   // Indicator text color for English
    D3DCOLOR       m_IndicatorBkColor;    // Indicator text background color

    // Edit-control-specific data
    int            m_nIndicatorWidth;     // Width of the indicator symbol
    RECT           m_rcIndicator;         // Rectangle for drawing the indicator button
};



#endif // DXUT_GUI_H