vcl/unx/source/gdi/salcvt.hxx

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  30 #ifndef SAL_CONVERTER_CACHE_HXX_
  31 #define SAL_CONVERTER_CACHE_HXX_
  32
  33 #include <salunx.h>
  34 #include <rtl/tencinfo.h>
  35 #include <rtl/textcvt.h>
  36
  37 #include <map>
  38
  39 extern "C" const char*
  40 pGetEncodingName( rtl_TextEncoding nEncoding );
  41
  42 //
  43 // Cache TextToUnicode and UnicodeToText converter and conversion info which is
  44 // used in DrawXYZ routines and in the Event loop
  45 //
  46
  47 class SalConverterCache {
  48
  49     public:
  50                         SalConverterCache();
  51                         ~SalConverterCache();
  52         Bool                    EncodingHasChar(
  53                                 rtl_TextEncoding nEncoding, sal_Unicode nChar );
  54         rtl_UnicodeToTextConverter
  55                         GetU2TConverter( rtl_TextEncoding nEncoding );
  56         rtl_TextToUnicodeConverter
  57                         GetT2UConverter( rtl_TextEncoding nEncoding );
  58         Bool                    IsSingleByteEncoding( rtl_TextEncoding nEncoding );
  59         sal_Size                ConvertStringUTF16( const sal_Unicode *pText, int nTextLen,
  60                                 sal_Char *pBuffer, sal_Size nBufferSize,
  61                                 rtl_TextEncoding nEncoding);
  62
  63         static SalConverterCache*
  64                         GetInstance ();
  65
  66     private:
  67
  68         struct ConverterT {
  69             rtl_UnicodeToTextConverter  mpU2T;
  70             rtl_TextToUnicodeConverter  mpT2U;
  71             Bool                                                mbSingleByteEncoding;
  72             Bool                                                mbValid;
  73             ConverterT() :
  74                     mpU2T( NULL ),
  75                     mpT2U( NULL ),
  76                     mbSingleByteEncoding( False ),
  77                     mbValid( False )
  78             {
  79             }
  80             ~ConverterT()
  81             {
  82                 if( mpU2T )
  83                     rtl_destroyUnicodeToTextConverter( mpU2T );
  84                 if( mpT2U )
  85                     rtl_destroyTextToUnicodeConverter( mpT2U );
  86             }
  87         };
  88
  89     std::map< rtl_TextEncoding, ConverterT >            m_aConverters;
  90 };
  91
  92
  93
  94 #endif /* SAL_CONVERTER_CACHE_HXX_ */
  95