David Turner
23 years ago
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#ifndef __FT_INTERNAL_GLYPH_LOADER_H__ |
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#define __FT_INTERNAL_GLYPH_LOADER_H__ |
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#include <ft2build.h> |
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#include FT_FREETYPE_H |
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FT_BEGIN_HEADER |
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/*************************************************************************/ |
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/*************************************************************************/ |
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/*************************************************************************/ |
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/**** ****/ |
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/**** ****/ |
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/**** G L Y P H L O A D E R ****/ |
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/**** ****/ |
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/**** ****/ |
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/*************************************************************************/ |
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/*************************************************************************/ |
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/*************************************************************************/ |
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/*************************************************************************/ |
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/* */ |
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/* <Struct> */ |
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/* FT_GlyphLoader */ |
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/* */ |
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/* <Description> */ |
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/* The glyph loader is an internal object used to load several glyphs */ |
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/* together (for example, in the case of composites). */ |
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/* */ |
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/* <Note> */ |
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/* The glyph loader implementation is not part of the high-level API, */ |
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/* hence the forward structure declaration. */ |
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/* */ |
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typedef struct FT_GlyphLoader_ FT_GlyphLoader ; |
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#define FT_SUBGLYPH_FLAG_ARGS_ARE_WORDS 1 |
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#define FT_SUBGLYPH_FLAG_ARGS_ARE_XY_VALUES 2 |
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#define FT_SUBGLYPH_FLAG_ROUND_XY_TO_GRID 4 |
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#define FT_SUBGLYPH_FLAG_SCALE 8 |
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#define FT_SUBGLYPH_FLAG_XY_SCALE 0x40 |
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#define FT_SUBGLYPH_FLAG_2X2 0x80 |
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#define FT_SUBGLYPH_FLAG_USE_MY_METRICS 0x200 |
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enum |
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{ |
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FT_GLYPH_OWN_BITMAP = 1 |
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}; |
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typedef struct FT_SubGlyph_ |
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{ |
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FT_Int index; |
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FT_UShort flags; |
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FT_Int arg1; |
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FT_Int arg2; |
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FT_Matrix transform; |
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}; |
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typedef struct FT_GlyphLoadRec_ |
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{ |
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FT_Outline outline; /* outline */ |
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FT_Vector* extra_points; /* extra points table */ |
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FT_UInt num_subglyphs; /* number of subglyphs */ |
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FT_SubGlyph* subglyphs; /* subglyphs */ |
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} FT_GlyphLoadRec, *FT_GlyphLoad; |
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typedef struct FT_GlyphLoaderRec_ |
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{ |
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FT_Memory memory; |
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FT_UInt max_points; |
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FT_UInt max_contours; |
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FT_UInt max_subglyphs; |
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FT_Bool use_extra; |
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FT_GlyphLoadRec base; |
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FT_GlyphLoadRec current; |
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void* other; /* for possible future extension? */ |
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} FT_GlyphLoaderRec; |
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/* create new empty glyph loader */ |
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FT_BASE( FT_Error ) |
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FT_GlyphLoader_New( FT_Memory memory, |
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FT_GlyphLoader *aloader ); |
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/* add an extra points table to a glyph loader */ |
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FT_BASE( FT_Error ) |
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FT_GlyphLoader_Create_Extra( FT_GlyphLoader loader ); |
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/* destroy a glyph loader */ |
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FT_BASE( void ) |
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FT_GlyphLoader_Done( FT_GlyphLoader loader ); |
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/* reset a glyph loader (frees everything int it) */ |
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FT_BASE( void ) |
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FT_GlyphLoader_Reset( FT_GlyphLoader loader ); |
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/* rewind a glyph loader */ |
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FT_BASE( void ) |
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FT_GlyphLoader_Rewind( FT_GlyphLoader loader ); |
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/* check that there is enough room to add 'n_points' and 'n_contours' */ |
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/* to the glyph loader.. */ |
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FT_BASE( FT_Error ) |
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FT_GlyphLoader_Check_Points( FT_GlyphLoader loader, |
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FT_UInt n_points, |
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FT_UInt n_contours ); |
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/* check that there is enough room to add 'n_subs' sub-glyphs to */ |
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/* a glyph loader */ |
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FT_BASE( FT_Error ) |
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FT_GlyphLoader_Check_Subglyphs( FT_GlyphLoader loader, |
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FT_UInt n_subs ); |
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/* prepare a glyph loader, i.e. empty the current glyph */ |
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FT_BASE( void ) |
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FT_GlyphLoader_Prepare( FT_GlyphLoader loader ); |
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/* add the current glyph to the base glyph */ |
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FT_BASE( void ) |
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FT_GlyphLoader_Add( FT_GlyphLoader loader ); |
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/* copy points from one glyph loader to another */ |
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FT_BASE( FT_Error ) |
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FT_GlyphLoader_Copy_Points( FT_GlyphLoader target, |
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FT_GlyphLoader source ); |
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/* */ |
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FT_END_HEADER |
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#endif /* __FT_INTERNAL_GLYPH_LOADER_H__ */ |
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