ref: 02b8e7e8d751605b133568b86fbb5dff48b6b5a5
dir: /include/internal/ftgloadr.h/
/***************************************************************************/ /* */ /* ftgloadr.h */ /* */ /* The FreeType glyph loader (specification). */ /* */ /* Copyright 2002, 2003, 2005, 2006 by */ /* David Turner, Robert Wilhelm, and Werner Lemberg */ /* */ /* This file is part of the FreeType project, and may only be used, */ /* modified, and distributed under the terms of the FreeType project */ /* license, LICENSE.TXT. By continuing to use, modify, or distribute */ /* this file you indicate that you have read the license and */ /* understand and accept it fully. */ /* */ /***************************************************************************/ #ifndef __FTGLOADR_H__ #define __FTGLOADR_H__ #include <ft2build.h> #include FT_FREETYPE_H FT_BEGIN_HEADER /*************************************************************************/ /* */ /* <Struct> */ /* FT_GlyphLoader */ /* */ /* <Description> */ /* The glyph loader is an internal object used to load several glyphs */ /* together (for example, in the case of composites). */ /* */ /* <Note> */ /* The glyph loader implementation is not part of the high-level API, */ /* hence the forward structure declaration. */ /* */ typedef struct FT_GlyphLoaderRec_* FT_GlyphLoader ; #if 0 /* moved to freetype.h in version 2.2 */ #define FT_SUBGLYPH_FLAG_ARGS_ARE_WORDS 1 #define FT_SUBGLYPH_FLAG_ARGS_ARE_XY_VALUES 2 #define FT_SUBGLYPH_FLAG_ROUND_XY_TO_GRID 4 #define FT_SUBGLYPH_FLAG_SCALE 8 #define FT_SUBGLYPH_FLAG_XY_SCALE 0x40 #define FT_SUBGLYPH_FLAG_2X2 0x80 #define FT_SUBGLYPH_FLAG_USE_MY_METRICS 0x200 #endif typedef struct FT_SubGlyphRec_ { FT_Int index; FT_UShort flags; FT_Int arg1; FT_Int arg2; FT_Matrix transform; } FT_SubGlyphRec; typedef struct FT_GlyphLoadRec_ { FT_Outline outline; /* outline */ FT_Vector* extra_points; /* extra points table */ FT_Vector* extra_points2; /* second extra points table */ FT_UInt num_subglyphs; /* number of subglyphs */ FT_SubGlyph subglyphs; /* subglyphs */ } FT_GlyphLoadRec, *FT_GlyphLoad; typedef struct FT_GlyphLoaderRec_ { FT_Memory memory; FT_UInt max_points; FT_UInt max_contours; FT_UInt max_subglyphs; FT_Bool use_extra; FT_GlyphLoadRec base; FT_GlyphLoadRec current; void* other; /* for possible future extension? */ } FT_GlyphLoaderRec; /* create new empty glyph loader */ FT_BASE( FT_Error ) FT_GlyphLoader_New( FT_Memory memory, FT_GlyphLoader *aloader ); /* add an extra points table to a glyph loader */ FT_BASE( FT_Error ) FT_GlyphLoader_CreateExtra( FT_GlyphLoader loader ); /* destroy a glyph loader */ FT_BASE( void ) FT_GlyphLoader_Done( FT_GlyphLoader loader ); /* reset a glyph loader (frees everything int it) */ FT_BASE( void ) FT_GlyphLoader_Reset( FT_GlyphLoader loader ); /* rewind a glyph loader */ FT_BASE( void ) FT_GlyphLoader_Rewind( FT_GlyphLoader loader ); /* check that there is enough space to add `n_points' and `n_contours' */ /* to the glyph loader */ FT_BASE( FT_Error ) FT_GlyphLoader_CheckPoints( FT_GlyphLoader loader, FT_UInt n_points, FT_UInt n_contours ); #define FT_GLYPHLOADER_CHECK_P( _loader, _count ) \ ( (_count) == 0 || \ ( (_loader)->base.outline.n_points + \ (_loader)->current.outline.n_points + \ (unsigned long)(_count) ) <= (_loader)->max_points ) #define FT_GLYPHLOADER_CHECK_C( _loader, _count ) \ ( (_count) == 0 || \ ( (_loader)->base.outline.n_contours + \ (_loader)->current.outline.n_contours + \ (unsigned long)(_count)) <= (_loader)->max_contours ) #define FT_GLYPHLOADER_CHECK_POINTS( _loader, _points, _contours ) \ ( ( FT_GLYPHLOADER_CHECK_P( _loader, _points ) && \ FT_GLYPHLOADER_CHECK_C( _loader, _contours ) ) \ ? 0 \ : FT_GlyphLoader_CheckPoints( (_loader), (_points), (_contours) ) ) /* check that there is enough space to add `n_subs' sub-glyphs to */ /* a glyph loader */ FT_BASE( FT_Error ) FT_GlyphLoader_CheckSubGlyphs( FT_GlyphLoader loader, FT_UInt n_subs ); /* prepare a glyph loader, i.e. empty the current glyph */ FT_BASE( void ) FT_GlyphLoader_Prepare( FT_GlyphLoader loader ); /* add the current glyph to the base glyph */ FT_BASE( void ) FT_GlyphLoader_Add( FT_GlyphLoader loader ); /* copy points from one glyph loader to another */ FT_BASE( FT_Error ) FT_GlyphLoader_CopyPoints( FT_GlyphLoader target, FT_GlyphLoader source ); /* */ FT_END_HEADER #endif /* __FTGLOADR_H__ */ /* END */