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