/* * @doc INTERNAL * * @module _ime.h -- support for IME APIs | * * Purpose: * Most everything to do with FE composition string editing passes * through here. * * Authors: * Jon Matousek * Justin Voskuhl * Hon Wah Chan * * History: * 10/18/1995 jonmat Cleaned up level 2 code and converted it into * a class hierarchy supporting level 3. * * Copyright (c) 1995-1996 Microsoft Corporation. All rights reserved. * */ #ifndef _IME_H #define _IME_H class CTextMsgFilter; // defines for IME Level 2 and 3 #define IME_LEVEL_2 2 #define IME_LEVEL_3 3 #define IME_PROTECTED 4 /* * IME * * @class base class for IME support. * * @devnote * For level 2, at caret IMEs, the IME will draw a window directly over the text giving the * impression that the text is being processed by the application--this is called pseudo inline. * All UI is handled by the IME. This mode is currenlty bypassed in favor of level 3 true inline (TI); * however, it would be trivial to allow a user preference to select this mode. Some IMEs may have * a "special" UI, in which case level 3 TI is *NOT* used, necessitating level 2. * * For level 2, near caret IMEs, the IME will draw a very small and obvious window near the current * caret position in the document. This currently occurs for PRC(?) and Taiwan. * All UI is handled by the IME. * * For level 3, at caret IMEs, the composition string is drawn by the application, which is called * true inline, bypassing the level 2 "composition window". * Currently, we allow the IME to support all remaining UI *except* drawing of the composition string. */ class CIme { friend LRESULT OnGetIMECompositionMode ( CTextMsgFilter &TextMsgFilter ); friend HRESULT CompositionStringGlue ( const LPARAM lparam, CTextMsgFilter &TextMsgFilter ); friend HRESULT EndCompositionGlue ( CTextMsgFilter &TextMsgFilter, BOOL fForceDelete); friend void CheckDestroyIME ( CTextMsgFilter &TextMsgFilter ); //@access Protected data protected: short _imeLevel; //@cmember IME Level 2 or 3 short _cIgnoreIMECharMsg; //@cmember Level 2 IME use to eat WM_IME_CHAR message short _fIgnoreEndComposition; //@cmember ignore the next End Composition message short _fIMETerminated; //@cmember indicate this IME has been terminated short _fSkipFirstOvertype; //@cmember skip first overtype if selection is // deleted on StartComposition //@access Public methods public: virtual ~CIme() {}; INT _compMessageRefCount; //@cmember so as not to delete if recursed. short _fDestroy; //@cmember set when object wishes to be deleted. //@cmember Handle WM_IME_STARTCOMPOSITION virtual HRESULT StartComposition ( CTextMsgFilter &TextMsgFilter ) = 0; //@cmember Handle WM_IME_COMPOSITION and WM_IME_ENDCOMPOSITION virtual HRESULT CompositionString ( const LPARAM lparam, CTextMsgFilter &TextMsgFilter ) = 0; //@cmember Handle post WM_IME_CHAR to update comp window. virtual void PostIMEChar( CTextMsgFilter &TextMsgFilter ) = 0; //@cmember Handle WM_IME_NOTIFY virtual HRESULT IMENotify (const WPARAM wparam, const LPARAM lparam, CTextMsgFilter &TextMsgFilter, BOOL fCCompWindow ) = 0; virtual BOOL IMEMouseOperation ( CTextMsgFilter &TextMsgFilter, UINT msg ) = 0; enum TerminateMode { TERMINATE_NORMAL = 1, TERMINATE_FORCECANCEL = 2 }; void TerminateIMEComposition(CTextMsgFilter &TextMsgFilter, CIme::TerminateMode mode); //@cmember Terminate current IME composition session. //@cmember check if we need to ignore WM_IME_CHAR messages BOOL IgnoreIMECharMsg() { return _cIgnoreIMECharMsg > 0; } //@cmember skip WM_IME_CHAR message void SkipIMECharMsg() { _cIgnoreIMECharMsg--; } //@cmember accept WM_IME_CHAR message void AcceptIMECharMsg() { _cIgnoreIMECharMsg = 0; } static void CheckKeyboardFontMatching ( long cp, CTextMsgFilter &TextMsgFilter, ITextFont *pTextFont ); //@cmember Check current font/keyboard matching. BOOL IsTerminated () //@cmember Return _fIMETerminated { return _fIMETerminated; } INT GetIMELevel () //@cmember Return the current IME level. { return _imeLevel; } //@access Protected methods protected: //@cmember Get composition string, convert to unicode. static INT GetCompositionStringInfo( HIMC hIMC, DWORD dwIndex, WCHAR *uniCompStr, INT cchUniCompStr, BYTE *attrib, INT cbAttrib, LONG *cursorCP, LONG *cchAttrib, UINT kbCodePage, BOOL bUnicodeIME, BOOL bUsingAimm ); static HRESULT CheckInsertResultString ( const LPARAM lparam, CTextMsgFilter &TextMsgFilter, short *pcch = NULL ); void SetCompositionFont ( CTextMsgFilter &TextMsgFilter, ITextFont *pTextFont ); //@cmember Setup for level 2 and 3 composition and candidate window's font. void SetCompositionForm ( CTextMsgFilter &TextMsgFilter ); //@cmember Setup for level 2 IME composition window's position. }; /* * IME_Lev2 * * @class Level 2 IME support. * */ class CIme_Lev2 : public CIme { //@access Public methods public: //@cmember Handle level 2 WM_IME_STARTCOMPOSITION virtual HRESULT StartComposition ( CTextMsgFilter &TextMsgFilter ); //@cmember Handle level 2 WM_IME_COMPOSITION virtual HRESULT CompositionString ( const LPARAM lparam, CTextMsgFilter &TextMsgFilter ); //@cmember Handle post WM_IME_CHAR to update comp window. virtual void PostIMEChar( CTextMsgFilter &TextMsgFilter ); //@cmember Handle level 2 WM_IME_NOTIFY virtual HRESULT IMENotify (const WPARAM wparam, const LPARAM lparam, CTextMsgFilter &TextMsgFilter, BOOL fIgnore ); virtual BOOL IMEMouseOperation ( CTextMsgFilter &TextMsgFilter, UINT msg ) {return FALSE;} CIme_Lev2( CTextMsgFilter &TextMsgFilter ); virtual ~CIme_Lev2(); ITextFont *_pTextFont; //@cmember base format }; /* * IME_PROTECTED * * @class IME_PROTECTED * */ class CIme_Protected : public CIme { //@access Public methods public: //@cmember Handle level 2 WM_IME_STARTCOMPOSITION virtual HRESULT StartComposition ( CTextMsgFilter &TextMsgFilter ) {_imeLevel = IME_PROTECTED; return S_OK;} //@cmember Handle level 2 WM_IME_COMPOSITION virtual HRESULT CompositionString ( const LPARAM lparam, CTextMsgFilter &TextMsgFilter ); //@cmember Handle post WM_IME_CHAR to update comp window. virtual void PostIMEChar( CTextMsgFilter &TextMsgFilter ) {} //@cmember Handle level 2 WM_IME_NOTIFY virtual HRESULT IMENotify (const WPARAM wparam, const LPARAM lparam, CTextMsgFilter &TextMsgFilter, BOOL fIgnore ) {return S_FALSE;} virtual BOOL IMEMouseOperation ( CTextMsgFilter &TextMsgFilter, UINT msg ) {return FALSE;} }; /* * IME_Lev3 * * @class Level 3 IME support. * */ class CIme_Lev3 : public CIme_Lev2 { //@access Private data private: //@access Protected data protected: long _ichStart; //@cmember maintain starting ich. long _cchCompStr; //@cmember maintain composition string's cch. short _sIMESuportMouse; //@cmember IME mouse support WPARAM _wParamBefore; //@cmember Previous wParam sent to IME HWND _hwndIME; //@cmember current IME hWnd long _crTextColor; //@cmember current font text color long _crBkColor; //@cmember current font background color // Helper function //@cmember get imeshare color for the attribute COLORREF GetIMEShareColor(CIMEShare *pIMEShare, DWORD dwAttribute, DWORD dwProperty); //@access Public methods public: //@cmember Handle level 3 WM_IME_STARTCOMPOSITION virtual HRESULT StartComposition ( CTextMsgFilter &TextMsgFilter ); //@cmember Handle level 3 WM_IME_COMPOSITION virtual HRESULT CompositionString ( const LPARAM lparam, CTextMsgFilter &TextMsgFilter ); //@cmember Handle level 3 WM_IME_NOTIFY virtual HRESULT IMENotify (const WPARAM wparam, const LPARAM lparam, CTextMsgFilter &TextMsgFilter, BOOL fCCompWindow ); void SetCompositionStyle ( CTextMsgFilter &TextMsgFilter, UINT attribute, ITextFont *pTextFont ); CIme_Lev3( CTextMsgFilter &TextMsgFilter ); virtual ~CIme_Lev3() {}; virtual BOOL IMEMouseOperation ( CTextMsgFilter &TextMsgFilter, UINT msg ); virtual BOOL IMESupportMouse ( CTextMsgFilter &TextMsgFilter ); public: short _fUpdateWindow; //@cmember Update Window after closing CandidateWindow long GetIMECompositionStart() { return _ichStart; } long GetIMECompositionLen() { return _cchCompStr; } }; /* * Special IME_Lev3 for Korean Hangeul -> Hanja conversion * * @class Hangual IME support. * */ class CIme_HangeulToHanja : public CIme_Lev3 { //@access Private data private: public: CIme_HangeulToHanja( CTextMsgFilter &TextMsgFilter ); //@cmember Handle Hangeul WM_IME_STARTCOMPOSITION virtual HRESULT StartComposition ( CTextMsgFilter &TextMsgFilter ); //@cmember Handle Hangeul WM_IME_COMPOSITION virtual HRESULT CompositionString ( const LPARAM lparam, CTextMsgFilter &TextMsgFilter ); virtual BOOL IMEMouseOperation ( CTextMsgFilter &TextMsgFilter, UINT msg ) {return FALSE;} }; // Glue functions to call the respective methods of an IME object stored in the ed. HRESULT StartCompositionGlue ( CTextMsgFilter &TextMsgFilter ); HRESULT CompositionStringGlue ( const LPARAM lparam, CTextMsgFilter &TextMsgFilter ); HRESULT EndCompositionGlue ( CTextMsgFilter &TextMsgFilter, BOOL fForceDelete); void PostIMECharGlue ( CTextMsgFilter &TextMsgFilter ); HRESULT IMENotifyGlue ( const WPARAM wparam, const LPARAM lparam, CTextMsgFilter &TextMsgFilter ); // @parm the containing text edit. HRESULT IMEMouseCheck(CTextMsgFilter &TextMsgFilter, UINT *pmsg, WPARAM *pwparam, LPARAM *plparam, LRESULT *plres); // IME helper functions. void IMECompositionFull ( CTextMsgFilter &TextMsgFilter ); LRESULT OnGetIMECompositionMode ( CTextMsgFilter &TextMsgFilter ); BOOL IMECheckGetInvertRange(CTextMsgFilter *ed, LONG &, LONG &); void CheckDestroyIME ( CTextMsgFilter &TextMsgFilter ); BOOL IMEHangeulToHanja ( CTextMsgFilter &TextMsgFilter ); BOOL IMEMessage ( CTextMsgFilter &TextMsgFilter, UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL bPostMessage ); HIMC LocalGetImmContext ( CTextMsgFilter &TextMsgFilter ); void LocalReleaseImmContext ( CTextMsgFilter &TextMsgFilter, HIMC hIMC ); long IMEShareToTomUL ( UINT ulID ); #endif // define _IME_H