textinput/peninputhwrfscn/inc/peninputhwrengine.h
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     1 /*
       
     2 * Copyright (c) 2002-2005 Nokia Corporation and/or its subsidiary(-ies).
       
     3 * All rights reserved.
       
     4 * This component and the accompanying materials are made available
       
     5 * under the terms of "Eclipse Public License v1.0""
       
     6 * which accompanies this distribution, and is available
       
     7 * at the URL "http://www.eclipse.org/legal/epl-v10.html".
       
     8 *
       
     9 * Initial Contributors:
       
    10 * Nokia Corporation - initial contribution.
       
    11 *
       
    12 * Contributors:
       
    13 *
       
    14 * Description:  HWR Engine
       
    15 *
       
    16 */
       
    17 
       
    18 
       
    19 #ifndef C_PENINPUTHWRENGINE_H
       
    20 #define C_PENINPUTHWRENGINE_H
       
    21 
       
    22 //  INCLUDES
       
    23 #include <e32cmn.h>
       
    24 #include <eikon.hrh>
       
    25 #include <PtiEngine.h>
       
    26 
       
    27 class CPeninputHwrfscnDataStore;
       
    28 
       
    29 /**
       
    30  *  CAknFepHwrEngine
       
    31  *
       
    32  *  @lib peninputhwrfscn.lib
       
    33  *  @since S60 v3.2
       
    34  */
       
    35 class CAknFepHwrEngine: public CBase
       
    36     {
       
    37 public:
       
    38 
       
    39     /**
       
    40      * Symbian constructor.
       
    41      *
       
    42      * @since S60 v3.2
       
    43      * @return Pointer to created CAknFepHwrEngine object
       
    44      */
       
    45     static CAknFepHwrEngine* NewL( CPtiEngine* aPtiEngine, 
       
    46         CPeninputHwrfscnDataStore* aOwner );
       
    47 
       
    48     /**
       
    49      * destructor
       
    50      *
       
    51      * @since S60 v3.2
       
    52      * @return None
       
    53      */
       
    54     virtual ~CAknFepHwrEngine();
       
    55 
       
    56     /**
       
    57      * Do recoginize by engine
       
    58      *
       
    59      * @since S60 v3.2
       
    60      * @param aTraceData The trace data.
       
    61      * @param aCandidates The candidates recognized.
       
    62      * @param aRangeStartPos The range index of candidates.
       
    63      * @return None
       
    64      */            
       
    65     void DoRecognizeL( const RArray<TPoint>& aTraceData, RPointerArray<HBufC>& aCandidates );
       
    66 
       
    67     /**
       
    68      * Do predictive using trigger string
       
    69      *
       
    70      * @since S60 v3.2
       
    71      * @param aTriggerStr The trigger string to do predictive.
       
    72      * @param aPredictives The candidates predictived.
       
    73      * @param aNextPage Whether it is to get next page
       
    74      * @return None
       
    75      */            
       
    76     void DoPredictiveL( const TDesC& aTriggerStr, 
       
    77                         RPointerArray<HBufC>& aPredictives,
       
    78                         TBool aNextPage = EFalse );
       
    79                        
       
    80                        
       
    81     /**
       
    82      * Do homophonic using trigger string
       
    83      *
       
    84      * @since S60 v3.2
       
    85      * @param aTriggerStr The trigger string to do homophonic.
       
    86      * @param aHomophonic The homophonic candidates.
       
    87      * @return None
       
    88      */            
       
    89     void DoHomophonicL( const TDesC& aTriggerStr, 
       
    90                         RPointerArray<HBufC>& aHomophonic );    
       
    91     
       
    92     
       
    93     /**
       
    94      * Notify hwr engine to set primary range and auxiliary ranges
       
    95      *
       
    96      * @since S60 v3.2
       
    97      * @param aPermittedRanges The permitted ranges and the first range is primary range.
       
    98      * @return None
       
    99      */
       
   100     void SetRanges( const RArray<TInt>& aPermittedRanges );
       
   101 
       
   102     /**
       
   103      * Set case
       
   104      *
       
   105      * @since S60 v3.2
       
   106      * @param aCase The case
       
   107      * @return None
       
   108      */            
       
   109     void SetCase( TInt aCase );
       
   110 
       
   111     /**
       
   112      * Set number mode
       
   113      *
       
   114      * @since S60 v3.2
       
   115      * @param aNumberMode Given number mode
       
   116      * @return None
       
   117      */
       
   118     void SetNumberMode( const TAknEditorNumericKeymap& aNumberMode );
       
   119 
       
   120     /**
       
   121      * Get stroke end mark from hwr engine
       
   122      *
       
   123      * @since S60 v3.2
       
   124      * @return Stroke end mark
       
   125      */
       
   126     TPoint StrokeEndMark() const ;
       
   127 
       
   128     /**
       
   129      * Set primary candidate num that hwr engine should return each time
       
   130      *
       
   131      * @since S60 v3.2
       
   132      * @param aNum The primary candidate num to be set
       
   133      * @return KErrNone if operation successfully,otherwise system wide error codes
       
   134      */
       
   135     TInt SetPrimaryCandidateNum( TInt aNum );
       
   136 
       
   137     /**
       
   138      * Set total candidate number that can be shown
       
   139      *
       
   140      * @since S60 v3.2
       
   141      * @param aNum The total candidate number that should be shown
       
   142      * @return KErrNone if operation successfully,otherwise system wide error codes
       
   143      */
       
   144     TInt SetCandidatesMaxCount( TInt aCount );
       
   145 
       
   146     /**
       
   147      * Set aux candidate number that can be shown
       
   148      *
       
   149      * @since S60 v3.2
       
   150      * @param aNum The aux candidate number that should be shown
       
   151      * @return KErrNone if operation successfully,otherwise system wide error codes
       
   152      */
       
   153     TInt SetAuxCandidateNum( TInt aNum );    
       
   154 
       
   155     /**
       
   156      * Get aux candidate number that can be shown
       
   157      *
       
   158      * @since S60 v3.2
       
   159      * @return aux candidate number if operation successfully,otherwise system wide error codes
       
   160      */
       
   161     TInt GetAuxCandidateNum();       
       
   162     
       
   163     /**
       
   164      * Set language
       
   165      *
       
   166      * @since S60 v3.2
       
   167      * @param aLanguage The language
       
   168      * @return None
       
   169      */            
       
   170     void SetLanguageL( TInt aLanguage );
       
   171     
       
   172     /**
       
   173      * Set custom key mapping
       
   174      *
       
   175      * @since S60 v3.2
       
   176      * @param aKeyMap The key mapping
       
   177      * @return None
       
   178      */            
       
   179     void SetCustomKeymapL( const TDesC& aKeyMap );
       
   180     
       
   181     /**
       
   182      * Clear custom key mapping
       
   183      *
       
   184      * @since S60 v3.2
       
   185      * @return None
       
   186      */            
       
   187     void ResetCustomKeyMap();
       
   188     
       
   189     /**
       
   190      * Do background construct
       
   191      *
       
   192      * @since S60 v3.2
       
   193      * @return None
       
   194      */            
       
   195     static TBool BackgroundTaskL( TAny* aPtr );
       
   196     TInt SetInputAreaSize(TSize& aSize);    
       
   197     TInt SetScreenSize(TSize& aSize);    
       
   198 private:
       
   199     
       
   200     /**
       
   201      * C++ constructor
       
   202      *
       
   203      * @since S60 v3.2
       
   204      * @return None
       
   205      */            
       
   206     CAknFepHwrEngine();
       
   207 
       
   208     /**
       
   209      * Second phase constructor
       
   210      *
       
   211      * @since S60 v3.2
       
   212      * @return None
       
   213      */
       
   214     void ConstructL( CPtiEngine* aPtiEngine, CPeninputHwrfscnDataStore* aOwner );
       
   215     
       
   216     /**
       
   217      * Notify hwr engine to set correct range by language
       
   218      *
       
   219      * @since S60 v3.2
       
   220      * @param aRange Current range need to be set
       
   221      * @param aRecognitionRange Recognition range need to be set for hwr engine
       
   222      * @return None
       
   223      */
       
   224     void SetRecognitionRange( const TInt aRange, TRecognitionRange& aRecognitionRange );
       
   225     
       
   226     /**
       
   227      * Do background construct
       
   228      *
       
   229      * @since S60 v3.2
       
   230      * @return None
       
   231      */            
       
   232     void DoIdleConstructL();
       
   233     
       
   234     /**
       
   235      * Convert the stroke end mark of point array to another point
       
   236      *
       
   237      * @since S60 v3.2
       
   238      * @param aTraceData Point array
       
   239      * @param aPnt1 Stroke end mark to be replaced
       
   240      * @param aPnt2 Stroke end mark to be used
       
   241      * @return None
       
   242      */
       
   243     void ConvertStrokeEndMark( RArray<TPoint>& aTraceData, TPoint aPnt1, TPoint aPnt2 );
       
   244     
       
   245     /**
       
   246      * Get homophonic or polyphonic candidates
       
   247      *
       
   248      * @since S60 v3.2
       
   249      * @param aSpelling The spelling of the selected character
       
   250      * @param aHomophonic The homophonic or polyphonic candidates
       
   251      * @return None
       
   252      */
       
   253     void GetHomophonicAndPolyphonic( TDes& aSpelling, RPointerArray<HBufC>& aHomophonic );
       
   254 
       
   255     /**
       
   256      * Reorder secondary range in writing candidates
       
   257      *
       
   258      * @since S60 v3.2
       
   259      * @param aCandidates The writing candidates
       
   260      * @return None
       
   261      */
       
   262     void ReorderSecondaryRange( RPointerArray<HBufC>& aCandidates );
       
   263     
       
   264     /**
       
   265      * Do recongition when the ragnge is only number
       
   266      *
       
   267      * @since S60 v5.0
       
   268      * @param aTraceData The trace data.
       
   269      * @param aCandidates The candidates recognized.
       
   270      * @return None
       
   271      */
       
   272     void DoRecognizeOfNumberOnly( const RArray<TPoint>& aTraceData, 
       
   273                                   RPointerArray<HBufC>& aCandidates ); 
       
   274 
       
   275 private: //data
       
   276 
       
   277     /**
       
   278      * Engine
       
   279      * Ownership is determined by flag
       
   280      */
       
   281     CPtiEngine* iPtiEngine;
       
   282     
       
   283     /**
       
   284      * iPtiEngine ownership flag
       
   285      */
       
   286     TBool iOwnPtiEngine;
       
   287 
       
   288     /**
       
   289      * Hwr recognizer (Now own)
       
   290      */
       
   291     MPtiHwrRecognizer* iRecognizer;
       
   292     
       
   293     /**
       
   294      * Total candidate number that can be shown
       
   295      */
       
   296     TInt iTotalCandidateNum;
       
   297 
       
   298     /**
       
   299      * Current case
       
   300      */
       
   301     TInt iCase;
       
   302 
       
   303     /**
       
   304      * Current language
       
   305      */
       
   306     TInt iLanguage;
       
   307     
       
   308     /**
       
   309      * Range count
       
   310      */
       
   311     TInt iRangeCount;
       
   312     
       
   313     /**
       
   314      * Premary range
       
   315      */
       
   316     TInt iPremaryRange;
       
   317 
       
   318     /**
       
   319      * Custom key mapping
       
   320      */
       
   321     HBufC* iCustomKeymap;
       
   322     
       
   323     /**
       
   324      * Idle (own)
       
   325      */
       
   326     CIdle* iIdle;
       
   327     
       
   328     /**
       
   329      * Data store (Not own)
       
   330      */
       
   331     CPeninputHwrfscnDataStore* iOwner;
       
   332     
       
   333     /**
       
   334      * Set number mode flag
       
   335      */
       
   336     TBool iNeedSetNumberMode;
       
   337     
       
   338     /**
       
   339      * Set case flag
       
   340      */
       
   341     TBool iNeedSetCase;
       
   342     
       
   343     /**
       
   344      * Set range flag
       
   345      */
       
   346     TBool iNeedSetRange;
       
   347     
       
   348     /**
       
   349      * Permitted range array
       
   350      */
       
   351     RArray<TInt> iNeedPermittedRanges;
       
   352     
       
   353     /**
       
   354      * The number mode
       
   355      */
       
   356     TInt iNumberMode;
       
   357     };
       
   358 
       
   359 #endif //C_PENINPUTHWRENGINE_H
       
   360 
       
   361 //End Of File