src/gui/inputmethod/qwininputcontext_win.cpp
changeset 0 1918ee327afb
child 3 41300fa6a67c
equal deleted inserted replaced
-1:000000000000 0:1918ee327afb
       
     1 /****************************************************************************
       
     2 **
       
     3 ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
       
     4 ** All rights reserved.
       
     5 ** Contact: Nokia Corporation (qt-info@nokia.com)
       
     6 **
       
     7 ** This file is part of the QtGui module of the Qt Toolkit.
       
     8 **
       
     9 ** $QT_BEGIN_LICENSE:LGPL$
       
    10 ** No Commercial Usage
       
    11 ** This file contains pre-release code and may not be distributed.
       
    12 ** You may use this file in accordance with the terms and conditions
       
    13 ** contained in the Technology Preview License Agreement accompanying
       
    14 ** this package.
       
    15 **
       
    16 ** GNU Lesser General Public License Usage
       
    17 ** Alternatively, this file may be used under the terms of the GNU Lesser
       
    18 ** General Public License version 2.1 as published by the Free Software
       
    19 ** Foundation and appearing in the file LICENSE.LGPL included in the
       
    20 ** packaging of this file.  Please review the following information to
       
    21 ** ensure the GNU Lesser General Public License version 2.1 requirements
       
    22 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
       
    23 **
       
    24 ** In addition, as a special exception, Nokia gives you certain additional
       
    25 ** rights.  These rights are described in the Nokia Qt LGPL Exception
       
    26 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
       
    27 **
       
    28 ** If you have questions regarding the use of this file, please contact
       
    29 ** Nokia at qt-info@nokia.com.
       
    30 **
       
    31 **
       
    32 **
       
    33 **
       
    34 **
       
    35 **
       
    36 **
       
    37 **
       
    38 ** $QT_END_LICENSE$
       
    39 **
       
    40 ****************************************************************************/
       
    41 
       
    42 #include "qwininputcontext_p.h"
       
    43 #include "qinputcontext_p.h"
       
    44 
       
    45 #include "qfont.h"
       
    46 #include "qwidget.h"
       
    47 #include "qapplication.h"
       
    48 #include "qevent.h"
       
    49 #include "qtextformat.h"
       
    50 #include "qtextboundaryfinder.h"
       
    51 
       
    52 //#define Q_IME_DEBUG
       
    53 
       
    54 #ifdef Q_IME_DEBUG
       
    55 #include "qdebug.h"
       
    56 #endif
       
    57 
       
    58 #if defined(Q_WS_WINCE)
       
    59 extern void qt_wince_show_SIP(bool show);   // defined in qguifunctions_wince.cpp
       
    60 #endif
       
    61 
       
    62 QT_BEGIN_NAMESPACE
       
    63 
       
    64 extern bool qt_sendSpontaneousEvent(QObject*, QEvent*);
       
    65 
       
    66 
       
    67 DEFINE_GUID(IID_IActiveIMMApp,
       
    68 0x08c0e040, 0x62d1, 0x11d1, 0x93, 0x26, 0x0, 0x60, 0xb0, 0x67, 0xb8, 0x6e);
       
    69 
       
    70 
       
    71 
       
    72 DEFINE_GUID(CLSID_CActiveIMM,
       
    73 0x4955DD33, 0xB159, 0x11d0, 0x8F, 0xCF, 0x0, 0xAA, 0x00, 0x6B, 0xCC, 0x59);
       
    74 
       
    75 
       
    76 
       
    77 DEFINE_GUID(IID_IActiveIMMMessagePumpOwner,
       
    78 0xb5cf2cfa, 0x8aeb, 0x11d1, 0x93, 0x64, 0x0, 0x60, 0xb0, 0x67, 0xb8, 0x6e);
       
    79 
       
    80 
       
    81 
       
    82 interface IEnumRegisterWordW;
       
    83 interface IEnumInputContext;
       
    84 
       
    85 
       
    86 bool qt_sendSpontaneousEvent(QObject*, QEvent*);
       
    87 
       
    88 
       
    89 #define IFMETHOD HRESULT STDMETHODCALLTYPE
       
    90 
       
    91 interface IActiveIMMApp : public IUnknown
       
    92 {
       
    93 public:
       
    94     virtual IFMETHOD AssociateContext(HWND hWnd, HIMC hIME, HIMC __RPC_FAR *phPrev) = 0;
       
    95     virtual IFMETHOD dummy_ConfigureIMEA() = 0;
       
    96     virtual IFMETHOD ConfigureIMEW(HKL hKL, HWND hWnd, DWORD dwMode, REGISTERWORDW __RPC_FAR *pData) = 0;
       
    97     virtual IFMETHOD CreateContext(HIMC __RPC_FAR *phIMC) = 0;
       
    98     virtual IFMETHOD DestroyContext(HIMC hIME) = 0;
       
    99     virtual IFMETHOD dummy_EnumRegisterWordA() = 0;
       
   100     virtual IFMETHOD EnumRegisterWordW(HKL hKL, LPWSTR szReading, DWORD dwStyle, LPWSTR szRegister, LPVOID pData,
       
   101         IEnumRegisterWordW __RPC_FAR *__RPC_FAR *pEnum) = 0;
       
   102     virtual IFMETHOD dummy_EscapeA() = 0;
       
   103     virtual IFMETHOD EscapeW(HKL hKL, HIMC hIMC, UINT uEscape, LPVOID pData, LRESULT __RPC_FAR *plResult) = 0;
       
   104     virtual IFMETHOD dummy_GetCandidateListA() = 0;
       
   105     virtual IFMETHOD GetCandidateListW(HIMC hIMC, DWORD dwIndex, UINT uBufLen, CANDIDATELIST __RPC_FAR *pCandList,
       
   106         UINT __RPC_FAR *puCopied) = 0;
       
   107     virtual IFMETHOD dummy_GetCandidateListCountA() = 0;
       
   108     virtual IFMETHOD GetCandidateListCountW(HIMC hIMC, DWORD __RPC_FAR *pdwListSize, DWORD __RPC_FAR *pdwBufLen) = 0;
       
   109     virtual IFMETHOD GetCandidateWindow(HIMC hIMC, DWORD dwIndex, CANDIDATEFORM __RPC_FAR *pCandidate) = 0;
       
   110     virtual IFMETHOD dummy_GetCompositionFontA() = 0;
       
   111     virtual IFMETHOD GetCompositionFontW(HIMC hIMC, LOGFONTW __RPC_FAR *plf) = 0;
       
   112     virtual IFMETHOD dummy_GetCompositionStringA() = 0;
       
   113     virtual IFMETHOD GetCompositionStringW(HIMC hIMC, DWORD dwIndex, DWORD dwBufLen, LONG __RPC_FAR *plCopied, LPVOID pBuf) = 0;
       
   114     virtual IFMETHOD GetCompositionWindow(HIMC hIMC, COMPOSITIONFORM __RPC_FAR *pCompForm) = 0;
       
   115     virtual IFMETHOD GetContext(HWND hWnd, HIMC __RPC_FAR *phIMC) = 0;
       
   116     virtual IFMETHOD dummy_GetConversionListA() = 0;
       
   117     virtual IFMETHOD GetConversionListW(HKL hKL, HIMC hIMC, LPWSTR pSrc, UINT uBufLen, UINT uFlag,
       
   118         CANDIDATELIST __RPC_FAR *pDst, UINT __RPC_FAR *puCopied) = 0;
       
   119     virtual IFMETHOD GetConversionStatus(HIMC hIMC, DWORD __RPC_FAR *pfdwConversion, DWORD __RPC_FAR *pfdwSentence) = 0;
       
   120     virtual IFMETHOD GetDefaultIMEWnd(HWND hWnd, HWND __RPC_FAR *phDefWnd) = 0;
       
   121     virtual IFMETHOD dummy_GetDescriptionA() = 0;
       
   122     virtual IFMETHOD GetDescriptionW(HKL hKL, UINT uBufLen, LPWSTR szDescription, UINT __RPC_FAR *puCopied) = 0;
       
   123     virtual IFMETHOD dummy_GetGuideLineA() = 0;
       
   124     virtual IFMETHOD GetGuideLineW(HIMC hIMC, DWORD dwIndex, DWORD dwBufLen, LPWSTR pBuf, DWORD __RPC_FAR *pdwResult) = 0;
       
   125     virtual IFMETHOD dummy_GetIMEFileNameA() = 0;
       
   126     virtual IFMETHOD GetIMEFileNameW(HKL hKL, UINT uBufLen, LPWSTR szFileName, UINT __RPC_FAR *puCopied) = 0;
       
   127     virtual IFMETHOD GetOpenStatus(HIMC hIMC) = 0;
       
   128     virtual IFMETHOD GetProperty(HKL hKL, DWORD fdwIndex, DWORD __RPC_FAR *pdwProperty) = 0;
       
   129     virtual IFMETHOD dummy_GetRegisterWordStyleA() = 0;
       
   130     virtual IFMETHOD GetRegisterWordStyleW(HKL hKL, UINT nItem, STYLEBUFW __RPC_FAR *pStyleBuf, UINT __RPC_FAR *puCopied) = 0;
       
   131     virtual IFMETHOD GetStatusWindowPos(HIMC hIMC, POINT __RPC_FAR *pptPos) = 0;
       
   132     virtual IFMETHOD GetVirtualKey(HWND hWnd, UINT __RPC_FAR *puVirtualKey) = 0;
       
   133     virtual IFMETHOD dummy_InstallIMEA() = 0;
       
   134     virtual IFMETHOD InstallIMEW(LPWSTR szIMEFileName, LPWSTR szLayoutText, HKL __RPC_FAR *phKL) = 0;
       
   135     virtual IFMETHOD IsIME(HKL hKL) = 0;
       
   136     virtual IFMETHOD dummy_IsUIMessageA() = 0;
       
   137     virtual IFMETHOD IsUIMessageW(HWND hWndIME, UINT msg, WPARAM wParam, LPARAM lParam) = 0;
       
   138     virtual IFMETHOD NotifyIME(HIMC hIMC, DWORD dwAction, DWORD dwIndex, DWORD dwValue) = 0;
       
   139     virtual IFMETHOD dummy_RegisterWordA() = 0;
       
   140     virtual IFMETHOD RegisterWordW(HKL hKL, LPWSTR szReading, DWORD dwStyle, LPWSTR szRegister) = 0;
       
   141     virtual IFMETHOD ReleaseContext(HWND hWnd, HIMC hIMC) = 0;
       
   142     virtual IFMETHOD SetCandidateWindow(HIMC hIMC, CANDIDATEFORM __RPC_FAR *pCandidate) = 0;
       
   143     virtual IFMETHOD SetCompositionFontA(HIMC hIMC, LOGFONTA __RPC_FAR *plf) = 0;
       
   144     virtual IFMETHOD SetCompositionFontW(HIMC hIMC, LOGFONTW __RPC_FAR *plf) = 0;
       
   145     virtual IFMETHOD dummy_SetCompositionStringA() = 0;
       
   146     virtual IFMETHOD SetCompositionStringW(HIMC hIMC, DWORD dwIndex, LPVOID pComp, DWORD dwCompLen,
       
   147         LPVOID pRead, DWORD dwReadLen) = 0;
       
   148     virtual IFMETHOD SetCompositionWindow(HIMC hIMC, COMPOSITIONFORM __RPC_FAR *pCompForm) = 0;
       
   149     virtual IFMETHOD SetConversionStatus(HIMC hIMC, DWORD fdwConversion, DWORD fdwSentence) = 0;
       
   150     virtual IFMETHOD SetOpenStatus(HIMC hIMC, BOOL fOpen) = 0;
       
   151     virtual IFMETHOD SetStatusWindowPos(HIMC hIMC, POINT __RPC_FAR *pptPos) = 0;
       
   152     virtual IFMETHOD SimulateHotKey(HWND hWnd, DWORD dwHotKeyID) = 0;
       
   153     virtual IFMETHOD dummy_UnregisterWordA() = 0;
       
   154     virtual IFMETHOD UnregisterWordW(HKL hKL, LPWSTR szReading, DWORD dwStyle, LPWSTR szUnregister) = 0;
       
   155     virtual IFMETHOD Activate(BOOL fRestoreLayout) = 0;
       
   156     virtual IFMETHOD Deactivate(void) = 0;
       
   157     virtual IFMETHOD OnDefWindowProc(HWND hWnd, UINT Msg, WPARAM wParam, LPARAM lParam, LRESULT __RPC_FAR *plResult) = 0;
       
   158     virtual IFMETHOD FilterClientWindows(ATOM __RPC_FAR *aaClassList, UINT uSize) = 0;
       
   159     virtual IFMETHOD dummy_GetCodePageA() = 0;
       
   160     virtual IFMETHOD GetLangId(HKL hKL, LANGID __RPC_FAR *plid) = 0;
       
   161     virtual IFMETHOD AssociateContextEx(HWND hWnd, HIMC hIMC, DWORD dwFlags) = 0;
       
   162     virtual IFMETHOD DisableIME(DWORD idThread) = 0;
       
   163     virtual IFMETHOD dummy_GetImeMenuItemsA() = 0;
       
   164     virtual IFMETHOD GetImeMenuItemsW(HIMC hIMC, DWORD dwFlags, DWORD dwType, /*IMEMENUITEMINFOW*/ void __RPC_FAR *pImeParentMenu,
       
   165         /*IMEMENUITEMINFOW*/ void __RPC_FAR *pImeMenu, DWORD dwSize, DWORD __RPC_FAR *pdwResult) = 0;
       
   166     virtual IFMETHOD EnumInputContext(DWORD idThread, IEnumInputContext __RPC_FAR *__RPC_FAR *ppEnum) = 0;
       
   167 };
       
   168 
       
   169 interface IActiveIMMMessagePumpOwner : public IUnknown
       
   170 {
       
   171 public:
       
   172     virtual IFMETHOD Start(void) = 0;
       
   173     virtual IFMETHOD End(void) = 0;
       
   174     virtual IFMETHOD OnTranslateMessage(const MSG __RPC_FAR *pMsg) = 0;
       
   175     virtual IFMETHOD Pause(DWORD __RPC_FAR *pdwCookie) = 0;
       
   176     virtual IFMETHOD Resume(DWORD dwCookie) = 0;
       
   177 };
       
   178 
       
   179 
       
   180 static IActiveIMMApp *aimm = 0;
       
   181 static IActiveIMMMessagePumpOwner *aimmpump = 0;
       
   182 static QString *imeComposition = 0;
       
   183 static int        imePosition    = -1;
       
   184 bool qt_use_rtl_extensions = false;
       
   185 static bool haveCaret = false;
       
   186 
       
   187 #ifndef LGRPID_INSTALLED
       
   188 #define LGRPID_INSTALLED          0x00000001  // installed language group ids
       
   189 #define LGRPID_SUPPORTED          0x00000002  // supported language group ids
       
   190 #endif
       
   191 
       
   192 #ifndef LGRPID_ARABIC
       
   193 #define LGRPID_WESTERN_EUROPE        0x0001   // Western Europe & U.S.
       
   194 #define LGRPID_CENTRAL_EUROPE        0x0002   // Central Europe
       
   195 #define LGRPID_BALTIC                0x0003   // Baltic
       
   196 #define LGRPID_GREEK                 0x0004   // Greek
       
   197 #define LGRPID_CYRILLIC              0x0005   // Cyrillic
       
   198 #define LGRPID_TURKISH               0x0006   // Turkish
       
   199 #define LGRPID_JAPANESE              0x0007   // Japanese
       
   200 #define LGRPID_KOREAN                0x0008   // Korean
       
   201 #define LGRPID_TRADITIONAL_CHINESE   0x0009   // Traditional Chinese
       
   202 #define LGRPID_SIMPLIFIED_CHINESE    0x000a   // Simplified Chinese
       
   203 #define LGRPID_THAI                  0x000b   // Thai
       
   204 #define LGRPID_HEBREW                0x000c   // Hebrew
       
   205 #define LGRPID_ARABIC                0x000d   // Arabic
       
   206 #define LGRPID_VIETNAMESE            0x000e   // Vietnamese
       
   207 #define LGRPID_INDIC                 0x000f   // Indic
       
   208 #define LGRPID_GEORGIAN              0x0010   // Georgian
       
   209 #define LGRPID_ARMENIAN              0x0011   // Armenian
       
   210 #endif
       
   211 
       
   212 static DWORD WM_MSIME_MOUSE = 0;
       
   213 
       
   214 QWinInputContext::QWinInputContext(QObject *parent)
       
   215     : QInputContext(parent), recursionGuard(false)
       
   216 {
       
   217 #ifndef Q_WS_WINCE
       
   218     QSysInfo::WinVersion ver = QSysInfo::windowsVersion();
       
   219     if (ver & QSysInfo::WV_NT_based  && ver >= QSysInfo::WV_VISTA) {
       
   220         // Since the IsValidLanguageGroup/IsValidLocale functions always return true on 
       
   221         // Vista, check the Keyboard Layouts for enabling RTL. 
       
   222         UINT nLayouts = GetKeyboardLayoutList(0, 0);
       
   223         if (nLayouts) {
       
   224             HKL *lpList = new HKL[nLayouts];
       
   225             GetKeyboardLayoutList(nLayouts, lpList);
       
   226             for (int i = 0; i<(int)nLayouts; i++) {
       
   227                 WORD plangid = PRIMARYLANGID((quintptr)lpList[i]);
       
   228                 if (plangid == LANG_ARABIC 
       
   229                     || plangid ==  LANG_HEBREW
       
   230                     || plangid ==  LANG_FARSI
       
   231 #ifdef LANG_SYRIAC
       
   232                     || plangid ==  LANG_SYRIAC
       
   233 #endif
       
   234                     ) {
       
   235                         qt_use_rtl_extensions = true;
       
   236                         break;
       
   237                 }
       
   238             }
       
   239             delete []lpList;
       
   240         }
       
   241     } else {
       
   242         // figure out whether a RTL language is installed
       
   243         qt_use_rtl_extensions = IsValidLanguageGroup(LGRPID_ARABIC, LGRPID_INSTALLED)
       
   244                                 || IsValidLanguageGroup(LGRPID_HEBREW, LGRPID_INSTALLED)
       
   245                                 || IsValidLocale(MAKELCID(MAKELANGID(LANG_ARABIC, SUBLANG_DEFAULT), SORT_DEFAULT), LCID_INSTALLED)
       
   246                                 || IsValidLocale(MAKELCID(MAKELANGID(LANG_HEBREW, SUBLANG_DEFAULT), SORT_DEFAULT), LCID_INSTALLED)
       
   247 #ifdef LANG_SYRIAC
       
   248                                 || IsValidLocale(MAKELCID(MAKELANGID(LANG_SYRIAC, SUBLANG_DEFAULT), SORT_DEFAULT), LCID_INSTALLED)
       
   249 #endif
       
   250                                 || IsValidLocale(MAKELCID(MAKELANGID(LANG_FARSI, SUBLANG_DEFAULT), SORT_DEFAULT), LCID_INSTALLED);
       
   251     }
       
   252 #else
       
   253     qt_use_rtl_extensions = false;
       
   254 #endif
       
   255 
       
   256     WM_MSIME_MOUSE = RegisterWindowMessage(L"MSIMEMouseOperation");
       
   257 }
       
   258 
       
   259 QWinInputContext::~QWinInputContext()
       
   260 {
       
   261     // release active input method if we have one
       
   262     if (aimm) {
       
   263         aimmpump->End();
       
   264         aimmpump->Release();
       
   265         aimm->Deactivate();
       
   266         aimm->Release();
       
   267         aimm = 0;
       
   268         aimmpump = 0;
       
   269     }
       
   270     delete imeComposition;
       
   271     imeComposition = 0;
       
   272 }
       
   273 
       
   274 static HWND getDefaultIMEWnd(HWND wnd)
       
   275 {
       
   276     HWND ime_wnd;
       
   277     if(aimm)
       
   278         aimm->GetDefaultIMEWnd(wnd, &ime_wnd);
       
   279     else
       
   280         ime_wnd = ImmGetDefaultIMEWnd(wnd);
       
   281     return ime_wnd;
       
   282 }
       
   283 
       
   284 static HIMC getContext(HWND wnd)
       
   285 {
       
   286     HIMC imc;
       
   287     if (aimm)
       
   288         aimm->GetContext(wnd, &imc);
       
   289     else
       
   290         imc = ImmGetContext(wnd);
       
   291 
       
   292     return imc;
       
   293 }
       
   294 
       
   295 static void releaseContext(HWND wnd, HIMC imc)
       
   296 {
       
   297     if (aimm)
       
   298         aimm->ReleaseContext(wnd, imc);
       
   299     else
       
   300         ImmReleaseContext(wnd, imc);
       
   301 }
       
   302 
       
   303 static void notifyIME(HIMC imc, DWORD dwAction, DWORD dwIndex, DWORD dwValue)
       
   304 {
       
   305     if (!imc)
       
   306         return;
       
   307     if (aimm)
       
   308         aimm->NotifyIME(imc, dwAction, dwIndex, dwValue);
       
   309     else
       
   310         ImmNotifyIME(imc, dwAction, dwIndex, dwValue);
       
   311 }
       
   312 
       
   313 static LONG getCompositionString(HIMC himc, DWORD dwIndex, LPVOID lpbuf, DWORD dBufLen)
       
   314 {
       
   315     LONG len = 0;
       
   316     if (aimm)
       
   317         aimm->GetCompositionStringW(himc, dwIndex, dBufLen, &len, lpbuf);
       
   318     else
       
   319         len = ImmGetCompositionString(himc, dwIndex, lpbuf, dBufLen);
       
   320     return len;
       
   321 }
       
   322 
       
   323 static int getCursorPosition(HIMC himc)
       
   324 {
       
   325     return getCompositionString(himc, GCS_CURSORPOS, 0, 0);
       
   326 }
       
   327 
       
   328 static QString getString(HIMC himc, DWORD dwindex, int *selStart = 0, int *selLength = 0)
       
   329 {
       
   330     static wchar_t *buffer = 0;
       
   331     static int buflen = 0;
       
   332 
       
   333     int len = getCompositionString(himc, dwindex, 0, 0) + 1;
       
   334     if (!buffer || len > buflen) {
       
   335         delete [] buffer;
       
   336         buflen = qMin(len, 256);
       
   337         buffer = new wchar_t[buflen];
       
   338     }
       
   339 
       
   340     len = getCompositionString(himc, dwindex, buffer, buflen * sizeof(wchar_t));
       
   341 
       
   342     if (selStart) {
       
   343         static wchar_t *attrbuffer = 0;
       
   344         static int attrbuflen = 0;
       
   345         int attrlen = getCompositionString(himc, dwindex, 0, 0) + 1;
       
   346         if (!attrbuffer || attrlen> attrbuflen) {
       
   347             delete [] attrbuffer;
       
   348             attrbuflen = qMin(attrlen, 256);
       
   349             attrbuffer = new wchar_t[attrbuflen];
       
   350         }
       
   351         attrlen = getCompositionString(himc, GCS_COMPATTR, attrbuffer, attrbuflen * sizeof(wchar_t));
       
   352         *selStart = attrlen+1;
       
   353         *selLength = -1;
       
   354         for (int i = 0; i < attrlen; i++) {
       
   355             if (attrbuffer[i] & ATTR_TARGET_CONVERTED) {
       
   356                 *selStart = qMin(*selStart, i);
       
   357                 *selLength = qMax(*selLength, i);
       
   358             }
       
   359         }
       
   360         *selLength = qMax(0, *selLength - *selStart + 1);
       
   361     }
       
   362 
       
   363     if (len <= 0)
       
   364         return QString();
       
   365 
       
   366     return QString((QChar*)buffer, len / sizeof(QChar));
       
   367 }
       
   368 
       
   369 void QWinInputContext::TranslateMessage(const MSG *msg)
       
   370 {
       
   371     if (!aimmpump || aimmpump->OnTranslateMessage(msg) != S_OK)
       
   372         ::TranslateMessage(msg);
       
   373 }
       
   374 
       
   375 LRESULT QWinInputContext::DefWindowProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
       
   376 {
       
   377     LRESULT retval;
       
   378     if (!aimm || aimm->OnDefWindowProc(hwnd, msg, wParam, lParam, &retval) != S_OK)
       
   379     {
       
   380         retval = ::DefWindowProc(hwnd, msg, wParam, lParam);
       
   381     }
       
   382     return retval;
       
   383 }
       
   384 
       
   385 
       
   386 void QWinInputContext::update()
       
   387 {
       
   388     QWidget *w = focusWidget();
       
   389     if(!w)
       
   390         return;
       
   391 
       
   392     Q_ASSERT(w->testAttribute(Qt::WA_WState_Created));
       
   393     HIMC imc = getContext(w->effectiveWinId());
       
   394 
       
   395     if (!imc)
       
   396         return;
       
   397 
       
   398     QFont f = qvariant_cast<QFont>(w->inputMethodQuery(Qt::ImFont));
       
   399     HFONT hf;
       
   400     hf = f.handle();
       
   401 
       
   402     LOGFONT lf;
       
   403     if (GetObject(hf, sizeof(lf), &lf)) {
       
   404         if (aimm)
       
   405             aimm->SetCompositionFontW(imc, &lf);
       
   406         else
       
   407             ImmSetCompositionFont(imc, &lf);
       
   408     }
       
   409 
       
   410     QRect r = w->inputMethodQuery(Qt::ImMicroFocus).toRect();
       
   411 
       
   412     // The ime window positions are based on the WinId with active focus.
       
   413     QWidget *imeWnd = QWidget::find(::GetFocus());
       
   414     if (imeWnd && !aimm) {
       
   415         QPoint pt (r.topLeft());
       
   416         pt = w->mapToGlobal(pt);
       
   417         pt = imeWnd->mapFromGlobal(pt);
       
   418         r.moveTo(pt);
       
   419     }
       
   420 
       
   421     COMPOSITIONFORM cf;
       
   422     // ### need X-like inputStyle config settings
       
   423     cf.dwStyle = CFS_FORCE_POSITION;
       
   424     cf.ptCurrentPos.x = r.x();
       
   425     cf.ptCurrentPos.y = r.y();
       
   426 
       
   427     CANDIDATEFORM candf;
       
   428     candf.dwIndex = 0;
       
   429     candf.dwStyle = CFS_EXCLUDE;
       
   430     candf.ptCurrentPos.x = r.x();
       
   431     candf.ptCurrentPos.y = r.y() + r.height();
       
   432     candf.rcArea.left = r.x();
       
   433     candf.rcArea.top = r.y();
       
   434     candf.rcArea.right = r.x() + r.width();
       
   435     candf.rcArea.bottom = r.y() + r.height();
       
   436 
       
   437     if(haveCaret)
       
   438         SetCaretPos(r.x(), r.y());
       
   439 
       
   440     if (aimm) {
       
   441         aimm->SetCompositionWindow(imc, &cf);
       
   442         aimm->SetCandidateWindow(imc, &candf);
       
   443     } else {
       
   444         ImmSetCompositionWindow(imc, &cf);
       
   445         ImmSetCandidateWindow(imc, &candf);
       
   446     }
       
   447 
       
   448     releaseContext(w->effectiveWinId(), imc);
       
   449 }
       
   450 
       
   451 
       
   452 bool QWinInputContext::endComposition()
       
   453 {
       
   454     QWidget *fw = focusWidget();
       
   455 #ifdef Q_IME_DEBUG
       
   456     qDebug("endComposition! fw = %s", fw ? fw->className() : "(null)");
       
   457 #endif
       
   458     bool result = true;
       
   459     if(imePosition == -1 || recursionGuard)
       
   460         return result;
       
   461 
       
   462     // Googles Pinyin Input Method likes to call endComposition again
       
   463     // when we call notifyIME with CPS_CANCEL, so protect ourselves
       
   464     // against that.
       
   465     recursionGuard = true;
       
   466 
       
   467     if (fw) {
       
   468         Q_ASSERT(fw->testAttribute(Qt::WA_WState_Created));
       
   469         HIMC imc = getContext(fw->effectiveWinId());
       
   470         notifyIME(imc, NI_COMPOSITIONSTR, CPS_CANCEL, 0);
       
   471         releaseContext(fw->effectiveWinId(), imc);
       
   472         if(haveCaret) {
       
   473             DestroyCaret();
       
   474             haveCaret = false;
       
   475         }
       
   476     }
       
   477 
       
   478     if (!fw)
       
   479         fw = QApplication::focusWidget();
       
   480 
       
   481     if (fw) {
       
   482         QInputMethodEvent e;
       
   483         result = qt_sendSpontaneousEvent(fw, &e);
       
   484     }
       
   485 
       
   486     if (imeComposition)
       
   487         imeComposition->clear();
       
   488     imePosition = -1;
       
   489 
       
   490     recursionGuard = false;
       
   491 
       
   492     return result;
       
   493 }
       
   494 
       
   495 void QWinInputContext::reset()
       
   496 {
       
   497     QWidget *fw = focusWidget();
       
   498 
       
   499 #ifdef Q_IME_DEBUG
       
   500     qDebug("sending accept to focus widget %s", fw ? fw->className() : "(null)");
       
   501 #endif
       
   502 
       
   503     if (fw && imePosition != -1) {
       
   504         QInputMethodEvent e;
       
   505         if (imeComposition)
       
   506             e.setCommitString(*imeComposition);
       
   507          imePosition = -1;
       
   508          qt_sendSpontaneousEvent(fw, &e);
       
   509     }
       
   510 
       
   511     if (imeComposition)
       
   512         imeComposition->clear();
       
   513     imePosition = -1;
       
   514 
       
   515     if (fw) {
       
   516         Q_ASSERT(fw->testAttribute(Qt::WA_WState_Created));
       
   517         HIMC imc = getContext(fw->effectiveWinId());
       
   518         notifyIME(imc, NI_COMPOSITIONSTR, CPS_CANCEL, 0);
       
   519         releaseContext(fw->effectiveWinId(), imc);
       
   520     }
       
   521 
       
   522 }
       
   523 
       
   524 
       
   525 bool QWinInputContext::startComposition()
       
   526 {
       
   527 #ifdef Q_IME_DEBUG
       
   528     qDebug("startComposition");
       
   529 #endif
       
   530 
       
   531     if (!imeComposition)
       
   532         imeComposition = new QString();
       
   533 
       
   534     QWidget *fw = focusWidget();
       
   535     if (fw) {
       
   536         Q_ASSERT(fw->testAttribute(Qt::WA_WState_Created));
       
   537         imePosition = 0;
       
   538         haveCaret = CreateCaret(fw->effectiveWinId(), 0, 1, 1);
       
   539         HideCaret(fw->effectiveWinId());
       
   540         update();
       
   541     }
       
   542     return fw != 0;
       
   543 }
       
   544 
       
   545 enum StandardFormat {
       
   546     PreeditFormat,
       
   547     SelectionFormat
       
   548 };
       
   549 
       
   550 bool QWinInputContext::composition(LPARAM lParam)
       
   551 {
       
   552 #ifdef Q_IME_DEBUG
       
   553     QString str;
       
   554     if (lParam & GCS_RESULTSTR)
       
   555         str += "RESULTSTR ";
       
   556     if (lParam & GCS_COMPSTR)
       
   557         str += "COMPSTR ";
       
   558     if (lParam & GCS_COMPATTR)
       
   559         str += "COMPATTR ";
       
   560     if (lParam & GCS_CURSORPOS)
       
   561         str += "CURSORPOS ";
       
   562     if (lParam & GCS_COMPCLAUSE)
       
   563         str += "COMPCLAUSE ";
       
   564     if (lParam & CS_INSERTCHAR)
       
   565        str += "INSERTCHAR ";
       
   566     if (lParam & CS_NOMOVECARET)
       
   567        str += "NOMOVECARET ";
       
   568     qDebug("composition, lParam=(%x) %s imePosition=%d", lParam, str.latin1(), imePosition);
       
   569 #endif
       
   570 
       
   571     bool result = true;
       
   572 
       
   573     if(!lParam)
       
   574         // bogus event
       
   575         return true;
       
   576 
       
   577     QWidget *fw = QApplication::focusWidget();
       
   578     if (fw) {
       
   579         Q_ASSERT(fw->testAttribute(Qt::WA_WState_Created));
       
   580         HIMC imc = getContext(fw->effectiveWinId());
       
   581         QInputMethodEvent e;
       
   582         if (lParam & (GCS_COMPSTR | GCS_COMPATTR | GCS_CURSORPOS)) {
       
   583             if (imePosition == -1)
       
   584                 // need to send a start event
       
   585                 startComposition();
       
   586 
       
   587             // some intermediate composition result
       
   588             int selStart, selLength;
       
   589             *imeComposition = getString(imc, GCS_COMPSTR, &selStart, &selLength);
       
   590             imePosition = getCursorPosition(imc);
       
   591             if (lParam & CS_INSERTCHAR  && lParam & CS_NOMOVECARET) {
       
   592                 // make korean work correctly. Hope this is correct for all IMEs
       
   593                 selStart = 0;
       
   594                 selLength = imeComposition->length();
       
   595             }
       
   596     	    if(selLength == 0)
       
   597                 selStart = 0;
       
   598 
       
   599            QList<QInputMethodEvent::Attribute> attrs;
       
   600            if (selStart > 0)
       
   601                attrs << QInputMethodEvent::Attribute(QInputMethodEvent::TextFormat, 0, selStart,
       
   602                                             standardFormat(PreeditFormat));
       
   603            if (selLength)
       
   604                attrs << QInputMethodEvent::Attribute(QInputMethodEvent::TextFormat, selStart, selLength,
       
   605                                             standardFormat(SelectionFormat));
       
   606            if (selStart + selLength < imeComposition->length())
       
   607                attrs << QInputMethodEvent::Attribute(QInputMethodEvent::TextFormat, selStart + selLength,
       
   608                                             imeComposition->length() - selStart - selLength,
       
   609                                             standardFormat(PreeditFormat));
       
   610            if(imePosition >= 0)
       
   611                attrs << QInputMethodEvent::Attribute(QInputMethodEvent::Cursor, imePosition, selLength ? 0 : 1, QVariant());
       
   612 
       
   613            e = QInputMethodEvent(*imeComposition, attrs);
       
   614         }
       
   615         if (lParam & GCS_RESULTSTR) {
       
   616             if(imePosition == -1)
       
   617                 startComposition();
       
   618             // a fixed result, return the converted string
       
   619             *imeComposition = getString(imc, GCS_RESULTSTR);
       
   620             imePosition = -1;
       
   621             e.setCommitString(*imeComposition);
       
   622             imeComposition->clear();
       
   623         }
       
   624         result = qt_sendSpontaneousEvent(fw, &e);
       
   625         update();
       
   626         releaseContext(fw->effectiveWinId(), imc);
       
   627     }
       
   628 #ifdef Q_IME_DEBUG
       
   629     qDebug("imecomposition: cursor pos at %d, str=%x", imePosition, str[0].unicode());
       
   630 #endif
       
   631     return result;
       
   632 }
       
   633 
       
   634 static HIMC defaultContext = 0;
       
   635 
       
   636 // checks whether widget is a popup
       
   637 inline bool isPopup(QWidget *w)
       
   638 {
       
   639     if (w && (w->windowFlags() & Qt::Popup) == Qt::Popup)
       
   640         return true;
       
   641     else 
       
   642         return false;
       
   643 }
       
   644 // checks whether widget is in a popup
       
   645 inline bool isInPopup(QWidget *w)
       
   646 {
       
   647     if (w && (isPopup(w) ||  isPopup(w->window())))
       
   648         return true;
       
   649     else 
       
   650         return false;
       
   651 }
       
   652 
       
   653 // find the parent widget, which is a non popup toplevel
       
   654 // this is valid only if the widget is/in a popup
       
   655 inline QWidget *findParentforPopup(QWidget *w)
       
   656 {
       
   657     QWidget *e = QWidget::find(w->effectiveWinId());
       
   658     // check if this or its parent is a popup
       
   659     while (isInPopup(e)) {
       
   660         e = e->window()->parentWidget();
       
   661         if (!e) 
       
   662             break;
       
   663         e = QWidget::find(e->effectiveWinId());
       
   664     }
       
   665     if (e)
       
   666         return e->window();
       
   667     else
       
   668         return 0;
       
   669 }
       
   670 
       
   671 // enables or disables the ime 
       
   672 inline void enableIme(QWidget *w,  bool value) 
       
   673 {
       
   674     if (value) {
       
   675         // enable ime
       
   676         if (defaultContext)
       
   677             ImmAssociateContext(w->effectiveWinId(), defaultContext);
       
   678 #ifdef Q_WS_WINCE
       
   679         if (qApp->autoSipEnabled())
       
   680             qt_wince_show_SIP(true);
       
   681 #endif
       
   682     } else {
       
   683         // disable ime
       
   684         HIMC oldimc = ImmAssociateContext(w->effectiveWinId(), 0);
       
   685         if (!defaultContext)
       
   686             defaultContext = oldimc;
       
   687 #ifdef Q_WS_WINCE
       
   688         if (qApp->autoSipEnabled())
       
   689             qt_wince_show_SIP(false);
       
   690 #endif
       
   691     }
       
   692 }
       
   693 
       
   694 
       
   695 void QWinInputContext::updateImeStatus(QWidget *w, bool hasFocus)
       
   696 {
       
   697     if (!w)
       
   698         return;
       
   699     // It's always the proxy that carries the hints.
       
   700     QWidget *focusProxyWidget = w->focusProxy();
       
   701     if (!focusProxyWidget)
       
   702         focusProxyWidget = w;
       
   703     bool e = w->testAttribute(Qt::WA_InputMethodEnabled) && w->isEnabled()
       
   704             && !(focusProxyWidget->inputMethodHints() & (Qt::ImhExclusiveInputMask | Qt::ImhHiddenText));
       
   705     bool hasIme = e && hasFocus;
       
   706 #ifdef Q_IME_DEBUG
       
   707     qDebug("%s HasFocus = %d hasIme = %d e = %d ", w->className(), hasFocus, hasIme, e);
       
   708 #endif
       
   709     if (hasFocus || e) {
       
   710         if (isInPopup(w))
       
   711             QWinInputContext::enablePopupChild(w, hasIme);
       
   712         else
       
   713             QWinInputContext::enable(w, hasIme);
       
   714     }
       
   715 }
       
   716 
       
   717 void QWinInputContext::enablePopupChild(QWidget *w, bool e)
       
   718 {
       
   719     if (aimm) {
       
   720         enable(w, e);
       
   721         return;
       
   722     }
       
   723 
       
   724     if (!w || !isInPopup(w))
       
   725         return;
       
   726 #ifdef Q_IME_DEBUG
       
   727     qDebug("enablePopupChild: w=%s, enable = %s", w ? w->className() : "(null)" , e ? "true" : "false");
       
   728 #endif
       
   729     QWidget *parent = findParentforPopup(w);
       
   730     if (parent) {
       
   731         // update ime status of the normal toplevel parent of the popup
       
   732         enableIme(parent, e);
       
   733     }
       
   734     QWidget *toplevel = w->window();
       
   735     if (toplevel) {
       
   736         // update ime status of the toplevel popup
       
   737         enableIme(toplevel, e);
       
   738     }
       
   739 }
       
   740 
       
   741 void QWinInputContext::enable(QWidget *w, bool e)
       
   742 {
       
   743     if(w) {
       
   744 #ifdef Q_IME_DEBUG
       
   745         qDebug("enable: w=%s, enable = %s", w ? w->className() : "(null)" , e ? "true" : "false");
       
   746 #endif
       
   747         if (!w->testAttribute(Qt::WA_WState_Created))
       
   748             return;
       
   749         if(aimm) {
       
   750             HIMC oldimc;
       
   751             if (!e) {
       
   752                 aimm->AssociateContext(w->effectiveWinId(), 0, &oldimc);
       
   753                 if (!defaultContext)
       
   754                     defaultContext = oldimc;
       
   755             } else if (defaultContext) {
       
   756                 aimm->AssociateContext(w->effectiveWinId(), defaultContext, &oldimc);
       
   757             }
       
   758         } else {
       
   759             // update ime status on the widget
       
   760             QWidget *p = QWidget::find(w->effectiveWinId());
       
   761             if (p)
       
   762                 enableIme(p, e);
       
   763         }
       
   764     }
       
   765 }
       
   766 
       
   767 void QWinInputContext::setFocusWidget(QWidget *w)
       
   768 {
       
   769     QWidget *oldFocus = focusWidget();
       
   770     if (oldFocus == w)
       
   771         return;
       
   772     if (w) {
       
   773         QWinInputContext::updateImeStatus(w, true);
       
   774     } else {
       
   775         if (oldFocus)
       
   776             QWinInputContext::updateImeStatus(oldFocus , false);
       
   777     }
       
   778     QInputContext::setFocusWidget(w);
       
   779     update();
       
   780 }
       
   781 
       
   782 bool QWinInputContext::isComposing() const
       
   783 {
       
   784     return imeComposition && !imeComposition->isEmpty();
       
   785 }
       
   786 
       
   787 void QWinInputContext::mouseHandler(int pos, QMouseEvent *e)
       
   788 {
       
   789     if(e->type() != QEvent::MouseButtonPress)
       
   790         return;
       
   791 
       
   792     if (pos < 0 || pos > imeComposition->length())
       
   793         reset();
       
   794 
       
   795     // Probably should pass the correct button, but it seems to work fine like this.
       
   796     DWORD button = MK_LBUTTON;
       
   797 
       
   798     QWidget *fw = focusWidget();
       
   799     if (fw) {
       
   800         Q_ASSERT(fw->testAttribute(Qt::WA_WState_Created));
       
   801         HIMC himc = getContext(fw->effectiveWinId());
       
   802         HWND ime_wnd = getDefaultIMEWnd(fw->effectiveWinId());
       
   803         SendMessage(ime_wnd, WM_MSIME_MOUSE, MAKELONG(MAKEWORD(button, pos == 0 ? 2 : 1), pos), (LPARAM)himc);
       
   804         releaseContext(fw->effectiveWinId(), himc);
       
   805     }
       
   806     //qDebug("mouseHandler: got value %d pos=%d", ret,pos);
       
   807 }
       
   808 
       
   809 QString QWinInputContext::language()
       
   810 {
       
   811     return QString();
       
   812 }
       
   813 
       
   814 int QWinInputContext::reconvertString(RECONVERTSTRING *reconv)
       
   815 {
       
   816     QWidget *w = focusWidget();
       
   817     if(!w)
       
   818         return -1;
       
   819 
       
   820     Q_ASSERT(w->testAttribute(Qt::WA_WState_Created));
       
   821     QString surroundingText = qvariant_cast<QString>(w->inputMethodQuery(Qt::ImSurroundingText));
       
   822     int memSize = sizeof(RECONVERTSTRING)+(surroundingText.length()+1)*sizeof(ushort);
       
   823     // If memory is not allocated, return the required size.
       
   824     if (!reconv) {
       
   825         if (surroundingText.isEmpty())
       
   826             return -1;
       
   827         else
       
   828             return memSize;
       
   829     }
       
   830     int pos = qvariant_cast<int>(w->inputMethodQuery(Qt::ImCursorPosition));
       
   831     // find the word in the surrounding text.
       
   832     QTextBoundaryFinder bounds(QTextBoundaryFinder::Word, surroundingText);
       
   833     bounds.setPosition(pos);
       
   834     if (bounds.isAtBoundary()) {
       
   835         if (QTextBoundaryFinder::EndWord == bounds.boundaryReasons())
       
   836             bounds.toPreviousBoundary();
       
   837     } else {
       
   838         bounds.toPreviousBoundary();
       
   839     }
       
   840     int startPos = bounds.position();
       
   841     bounds.toNextBoundary();
       
   842     int endPos = bounds.position();
       
   843     // select the text, this will be overwritten by following ime events.
       
   844     QList<QInputMethodEvent::Attribute> attrs;
       
   845     attrs << QInputMethodEvent::Attribute(QInputMethodEvent::Selection, startPos, endPos-startPos, QVariant());
       
   846     QInputMethodEvent e(QString(), attrs);
       
   847     qt_sendSpontaneousEvent(w, &e);
       
   848 
       
   849     reconv->dwSize = memSize;
       
   850     reconv->dwVersion = 0;
       
   851 
       
   852     reconv->dwStrLen = surroundingText.length();
       
   853     reconv->dwStrOffset = sizeof(RECONVERTSTRING);
       
   854     reconv->dwCompStrLen = endPos-startPos;
       
   855     reconv->dwCompStrOffset = startPos*sizeof(ushort);
       
   856     reconv->dwTargetStrLen = reconv->dwCompStrLen;
       
   857     reconv->dwTargetStrOffset = reconv->dwCompStrOffset;
       
   858     memcpy((char*)(reconv+1), surroundingText.utf16(), surroundingText.length()*sizeof(ushort));
       
   859     return memSize;
       
   860 }
       
   861 
       
   862 QT_END_NAMESPACE