dlls/imm32/imc.c

   1 /*
   2  *      Input Method Context
   3  *
   4  *      Copyright 2000 Hidenori Takeshima
   5  */
   6
   7 #include "config.h"
   8
   9 #include "winbase.h"
  10 #include "windef.h"
  11 #include "wingdi.h"
  12 #include "winuser.h"
  13 #include "winerror.h"
  14 #include "immddk.h"
  15
  16 #include "debugtools.h"
  17 DEFAULT_DEBUG_CHANNEL(imm);
  18
  19 #include "imm_private.h"
  20
  21 static HIMC IMM32_CreateIMC( HKL hkl );
  22 static BOOL IMM32_DestroyIMC( HIMC hIMC );
  23
  24 IMM32_IMC* IMM32_LockIMC( HIMC hIMC )
  25 {
  26         IMM32_IMC*      pIMC;
  27
  28         if ( hIMC == NULLIMC )
  29         {
  30                 SetLastError( ERROR_INVALID_HANDLE );
  31                 return NULL;
  32         }
  33
  34         pIMC = (IMM32_IMC*)IMM32_MoveableLock( (IMM32_MOVEABLEMEM*)hIMC );
  35         if ( !pIMC->fSelected )
  36         {
  37                 (void)IMM32_MoveableUnlock( (IMM32_MOVEABLEMEM*)hIMC );
  38                 SetLastError( ERROR_ACCESS_DENIED );
  39                 return NULL;
  40         }
  41
  42         return pIMC;
  43 }
  44
  45 BOOL IMM32_UnlockIMC( HIMC hIMC )
  46 {
  47         if ( hIMC == NULLIMC )
  48         {
  49                 SetLastError( ERROR_INVALID_HANDLE );
  50                 return FALSE;
  51         }
  52
  53         return IMM32_MoveableUnlock( (IMM32_MOVEABLEMEM*)hIMC );
  54 }
  55
  56 static HIMC IMM32_CreateIMC( HKL hkl )
  57 {
  58         IMM32_MOVEABLEMEM*      hIMC;
  59         IMM32_IMC*              pIMC;
  60         LPCOMPOSITIONSTRING     lpCompStr;
  61         LPCANDIDATEINFO         lpCandInfo;
  62         LPGUIDELINE             lpGuideLine;
  63
  64         hIMC = IMM32_MoveableAlloc( 0, sizeof( IMM32_IMC ) );
  65         if ( hIMC == NULL )
  66         {
  67                 SetLastError( ERROR_OUTOFMEMORY );
  68                 return NULLIMC;
  69         }
  70
  71         pIMC = (IMM32_IMC*)IMM32_MoveableLock( hIMC );
  72
  73         /* Initialize some members of IMC. */
  74         pIMC->context.hWnd = (HWND)NULL;
  75         pIMC->context.fOpen = FALSE;
  76         pIMC->context.hCompStr = (HIMCC)NULL;
  77         pIMC->context.hCandInfo = (HIMCC)NULL;
  78         pIMC->context.hGuideLine = (HIMCC)NULL;
  79         pIMC->context.hPrivate = (HIMCC)NULL;
  80         pIMC->context.dwNumMsgBuf = 0;
  81         pIMC->context.hMsgBuf = (HIMCC)NULL;
  82         pIMC->context.fdwInit = 0;
  83         pIMC->pkl = NULL;
  84         pIMC->fSelected = FALSE;
  85
  86         /* hCompStr, hCandInfo, hGuideLine, hMsgBuf must be allocated. */
  87         pIMC->context.hCompStr = ImmCreateIMCC( sizeof(COMPOSITIONSTRING) );
  88         if ( pIMC->context.hCompStr == (HIMCC)NULL )
  89                 goto out_of_memory;
  90         lpCompStr = (LPCOMPOSITIONSTRING)ImmLockIMCC( pIMC->context.hCompStr );
  91         if ( lpCompStr == NULL )
  92                 goto out_of_memory;
  93         lpCompStr->dwSize = sizeof(COMPOSITIONSTRING);
  94         (void)ImmUnlockIMCC( pIMC->context.hCompStr );
  95
  96         pIMC->context.hCandInfo = ImmCreateIMCC( sizeof(CANDIDATEINFO) );
  97         if ( pIMC->context.hCandInfo == (HIMCC)NULL )
  98                 goto out_of_memory;
  99         lpCandInfo = (LPCANDIDATEINFO)ImmLockIMCC( pIMC->context.hCandInfo );
 100         if ( lpCandInfo == NULL )
 101                 goto out_of_memory;
 102         lpCandInfo->dwSize = sizeof(CANDIDATEINFO);
 103         (void)ImmUnlockIMCC( pIMC->context.hCandInfo );
 104
 105         pIMC->context.hGuideLine = ImmCreateIMCC( sizeof(GUIDELINE) );
 106         if ( pIMC->context.hGuideLine == (HIMCC)NULL )
 107                 goto out_of_memory;
 108         lpGuideLine = (LPGUIDELINE)ImmLockIMCC( pIMC->context.hGuideLine );
 109         if ( lpGuideLine == NULL )
 110                 goto out_of_memory;
 111         lpGuideLine->dwSize = sizeof(GUIDELINE);
 112         (void)ImmUnlockIMCC( pIMC->context.hGuideLine );
 113
 114         pIMC->context.hMsgBuf = ImmCreateIMCC( 0 );
 115         if ( pIMC->context.hMsgBuf == (HIMCC)NULL )
 116                 goto out_of_memory;
 117
 118         pIMC->pkl = IMM32_GetIME( hkl );
 119         if ( pIMC->pkl != NULL )
 120         {
 121                 /* The current HKL is IME.
 122                  * Initialize IME's private context.
 123                  */
 124                 if ( pIMC->pkl->imeinfo.dwPrivateDataSize > 0 )
 125                 {
 126                         pIMC->context.hPrivate = ImmCreateIMCC(
 127                                 pIMC->pkl->imeinfo.dwPrivateDataSize );
 128                         if ( pIMC->context.hPrivate == (HIMCC)NULL )
 129                                 goto out_of_memory;
 130                 }
 131
 132                 pIMC->fSelected = TRUE;
 133                 if ( !pIMC->pkl->handlers.pImeSelect( (HIMC)hIMC, TRUE ) )
 134                 {
 135                         pIMC->fSelected = FALSE;
 136                         goto out_of_memory;
 137                 }
 138         }
 139
 140         (void)IMM32_MoveableUnlock( hIMC );
 141
 142         return (HIMC)hIMC;
 143
 144 out_of_memory:
 145         (void)IMM32_DestroyIMC( (HIMC)hIMC );
 146         SetLastError( ERROR_OUTOFMEMORY );
 147         return NULLIMC;
 148 }
 149
 150 static BOOL IMM32_DestroyIMC( HIMC hIMC )
 151 {
 152         IMM32_IMC*              pIMC;
 153
 154         if ( hIMC == NULLIMC )
 155         {
 156                 SetLastError( ERROR_INVALID_HANDLE );
 157                 return FALSE;
 158         }
 159
 160         pIMC = (IMM32_IMC*)IMM32_MoveableLock( (IMM32_MOVEABLEMEM*)hIMC );
 161
 162         if ( pIMC->context.hWnd != (HWND)NULL )
 163         {
 164                 FIXME( "please release lock of the context.hWnd!\n" );
 165         }
 166
 167         if ( pIMC->fSelected )
 168         {
 169                 (void)pIMC->pkl->handlers.pImeSelect( hIMC, FALSE );
 170                 pIMC->fSelected = FALSE;
 171         }
 172
 173         if ( pIMC->context.hCompStr != (HIMCC)NULL )
 174                 (void)ImmDestroyIMCC(pIMC->context.hCompStr);
 175         if ( pIMC->context.hCandInfo != (HIMCC)NULL )
 176                 (void)ImmDestroyIMCC(pIMC->context.hCandInfo);
 177         if ( pIMC->context.hGuideLine != (HIMCC)NULL )
 178                 (void)ImmDestroyIMCC(pIMC->context.hGuideLine);
 179         if ( pIMC->context.hPrivate != (HIMCC)NULL )
 180                 (void)ImmDestroyIMCC(pIMC->context.hPrivate);
 181         if ( pIMC->context.hMsgBuf != (HIMCC)NULL )
 182                 (void)ImmDestroyIMCC(pIMC->context.hMsgBuf);
 183
 184         IMM32_MoveableFree( (IMM32_MOVEABLEMEM*)hIMC );
 185
 186         return TRUE;
 187 }
 188
 189
 190
 191
 192
 193 /***********************************************************************
 194  *              ImmCreateContext (IMM32.@)
 195  */
 196 HIMC WINAPI ImmCreateContext( void )
 197 {
 198         TRACE("()\n");
 199
 200         return IMM32_CreateIMC( GetKeyboardLayout(0) );
 201 }
 202
 203 /***********************************************************************
 204  *              ImmDestroyContext (IMM32.@)
 205  */
 206 BOOL WINAPI ImmDestroyContext( HIMC hIMC )
 207 {
 208         TRACE("(0x%08x)\n",hIMC);
 209
 210         return IMM32_DestroyIMC( hIMC );
 211 }
 212
 213 /***********************************************************************
 214  *              ImmLockIMC (IMM32.@)
 215  */
 216 LPINPUTCONTEXT WINAPI ImmLockIMC(HIMC hIMC)
 217 {
 218         IMM32_IMC*      pIMC;
 219
 220         TRACE("(0x%08x)\n", (unsigned)hIMC);
 221
 222         pIMC = IMM32_LockIMC( hIMC );
 223         if ( pIMC == NULL )
 224                 return NULL;
 225         return &(pIMC->context);
 226 }
 227
 228 /***********************************************************************
 229  *              ImmUnlockIMC (IMM32.@)
 230  */
 231 BOOL WINAPI ImmUnlockIMC(HIMC hIMC)
 232 {
 233         TRACE("(0x%08x)\n", (unsigned)hIMC);
 234
 235         return IMM32_UnlockIMC( hIMC );
 236 }
 237
 238 /***********************************************************************
 239  *              ImmGetIMCLockCount (IMM32.@)
 240  */
 241 DWORD WINAPI ImmGetIMCLockCount(HIMC hIMC)
 242 {
 243         TRACE("(0x%08x)\n", (unsigned)hIMC);
 244
 245         if ( hIMC == NULLIMC )
 246         {
 247                 SetLastError( ERROR_INVALID_HANDLE );
 248                 return 0;
 249         }
 250
 251         return IMM32_MoveableGetLockCount( (IMM32_MOVEABLEMEM*)hIMC );
 252 }
 253
 254