| /* |
| * |
| * (C) Copyright IBM Corp. 1998-2004 - All Rights Reserved |
| * |
| */ |
| |
| #ifndef __CHARSUBSTITUTIONFILTER_H |
| #define __CHARSUBSTITUTIONFILTER_H |
| |
| #include "LETypes.h" |
| #include "LEGlyphFilter.h" |
| |
| U_NAMESPACE_BEGIN |
| |
| class LEFontInstance; |
| |
| /** |
| * This filter is used by character-based GSUB processors. It |
| * accepts only those characters which the given font can display. |
| * |
| * @internal |
| */ |
| class CharSubstitutionFilter : public UMemory, public LEGlyphFilter |
| { |
| private: |
| /** |
| * Holds the font which is used to test the characters. |
| * |
| * @internal |
| */ |
| const LEFontInstance *fFontInstance; |
| |
| /** |
| * The copy constructor. Not allowed! |
| * |
| * @internal |
| */ |
| CharSubstitutionFilter(const CharSubstitutionFilter &other); // forbid copying of this class |
| |
| /** |
| * The replacement operator. Not allowed! |
| * |
| * @internal |
| */ |
| CharSubstitutionFilter &operator=(const CharSubstitutionFilter &other); // forbid copying of this class |
| |
| public: |
| /** |
| * The constructor. |
| * |
| * @param fontInstance - the font to use to test the characters. |
| * |
| * @internal |
| */ |
| CharSubstitutionFilter(const LEFontInstance *fontInstance); |
| |
| /** |
| * The destructor. |
| * |
| * @internal |
| */ |
| ~CharSubstitutionFilter(); |
| |
| /** |
| * This method is used to test if a particular |
| * character can be displayed by the filter's |
| * font. |
| * |
| * @param glyph - the Unicode character code to be tested |
| * |
| * @return TRUE if the filter's font can display this character. |
| * |
| * @internal |
| */ |
| le_bool accept(LEGlyphID glyph) const; |
| }; |
| |
| U_NAMESPACE_END |
| #endif |
| |
| |