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annotate libs/ft2static/freetype/internal/ftgloadr.h @ 0:b2f14e535253

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author John Tsiombikas <nuclear@member.fsf.org>
date Sat, 01 Feb 2014 19:58:19 +0200
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nuclear@0 1 /***************************************************************************/
nuclear@0 2 /* */
nuclear@0 3 /* ftgloadr.h */
nuclear@0 4 /* */
nuclear@0 5 /* The FreeType glyph loader (specification). */
nuclear@0 6 /* */
nuclear@0 7 /* Copyright 2002, 2003, 2005, 2006 by */
nuclear@0 8 /* David Turner, Robert Wilhelm, and Werner Lemberg */
nuclear@0 9 /* */
nuclear@0 10 /* This file is part of the FreeType project, and may only be used, */
nuclear@0 11 /* modified, and distributed under the terms of the FreeType project */
nuclear@0 12 /* license, LICENSE.TXT. By continuing to use, modify, or distribute */
nuclear@0 13 /* this file you indicate that you have read the license and */
nuclear@0 14 /* understand and accept it fully. */
nuclear@0 15 /* */
nuclear@0 16 /***************************************************************************/
nuclear@0 17
nuclear@0 18
nuclear@0 19 #ifndef __FTGLOADR_H__
nuclear@0 20 #define __FTGLOADR_H__
nuclear@0 21
nuclear@0 22
nuclear@0 23 #include <ft2build.h>
nuclear@0 24 #include FT_FREETYPE_H
nuclear@0 25
nuclear@0 26
nuclear@0 27 FT_BEGIN_HEADER
nuclear@0 28
nuclear@0 29
nuclear@0 30 /*************************************************************************/
nuclear@0 31 /* */
nuclear@0 32 /* <Struct> */
nuclear@0 33 /* FT_GlyphLoader */
nuclear@0 34 /* */
nuclear@0 35 /* <Description> */
nuclear@0 36 /* The glyph loader is an internal object used to load several glyphs */
nuclear@0 37 /* together (for example, in the case of composites). */
nuclear@0 38 /* */
nuclear@0 39 /* <Note> */
nuclear@0 40 /* The glyph loader implementation is not part of the high-level API, */
nuclear@0 41 /* hence the forward structure declaration. */
nuclear@0 42 /* */
nuclear@0 43 typedef struct FT_GlyphLoaderRec_* FT_GlyphLoader ;
nuclear@0 44
nuclear@0 45
nuclear@0 46 #if 0 /* moved to freetype.h in version 2.2 */
nuclear@0 47 #define FT_SUBGLYPH_FLAG_ARGS_ARE_WORDS 1
nuclear@0 48 #define FT_SUBGLYPH_FLAG_ARGS_ARE_XY_VALUES 2
nuclear@0 49 #define FT_SUBGLYPH_FLAG_ROUND_XY_TO_GRID 4
nuclear@0 50 #define FT_SUBGLYPH_FLAG_SCALE 8
nuclear@0 51 #define FT_SUBGLYPH_FLAG_XY_SCALE 0x40
nuclear@0 52 #define FT_SUBGLYPH_FLAG_2X2 0x80
nuclear@0 53 #define FT_SUBGLYPH_FLAG_USE_MY_METRICS 0x200
nuclear@0 54 #endif
nuclear@0 55
nuclear@0 56
nuclear@0 57 typedef struct FT_SubGlyphRec_
nuclear@0 58 {
nuclear@0 59 FT_Int index;
nuclear@0 60 FT_UShort flags;
nuclear@0 61 FT_Int arg1;
nuclear@0 62 FT_Int arg2;
nuclear@0 63 FT_Matrix transform;
nuclear@0 64
nuclear@0 65 } FT_SubGlyphRec;
nuclear@0 66
nuclear@0 67
nuclear@0 68 typedef struct FT_GlyphLoadRec_
nuclear@0 69 {
nuclear@0 70 FT_Outline outline; /* outline */
nuclear@0 71 FT_Vector* extra_points; /* extra points table */
nuclear@0 72 FT_Vector* extra_points2; /* second extra points table */
nuclear@0 73 FT_UInt num_subglyphs; /* number of subglyphs */
nuclear@0 74 FT_SubGlyph subglyphs; /* subglyphs */
nuclear@0 75
nuclear@0 76 } FT_GlyphLoadRec, *FT_GlyphLoad;
nuclear@0 77
nuclear@0 78
nuclear@0 79 typedef struct FT_GlyphLoaderRec_
nuclear@0 80 {
nuclear@0 81 FT_Memory memory;
nuclear@0 82 FT_UInt max_points;
nuclear@0 83 FT_UInt max_contours;
nuclear@0 84 FT_UInt max_subglyphs;
nuclear@0 85 FT_Bool use_extra;
nuclear@0 86
nuclear@0 87 FT_GlyphLoadRec base;
nuclear@0 88 FT_GlyphLoadRec current;
nuclear@0 89
nuclear@0 90 void* other; /* for possible future extension? */
nuclear@0 91
nuclear@0 92 } FT_GlyphLoaderRec;
nuclear@0 93
nuclear@0 94
nuclear@0 95 /* create new empty glyph loader */
nuclear@0 96 FT_BASE( FT_Error )
nuclear@0 97 FT_GlyphLoader_New( FT_Memory memory,
nuclear@0 98 FT_GlyphLoader *aloader );
nuclear@0 99
nuclear@0 100 /* add an extra points table to a glyph loader */
nuclear@0 101 FT_BASE( FT_Error )
nuclear@0 102 FT_GlyphLoader_CreateExtra( FT_GlyphLoader loader );
nuclear@0 103
nuclear@0 104 /* destroy a glyph loader */
nuclear@0 105 FT_BASE( void )
nuclear@0 106 FT_GlyphLoader_Done( FT_GlyphLoader loader );
nuclear@0 107
nuclear@0 108 /* reset a glyph loader (frees everything int it) */
nuclear@0 109 FT_BASE( void )
nuclear@0 110 FT_GlyphLoader_Reset( FT_GlyphLoader loader );
nuclear@0 111
nuclear@0 112 /* rewind a glyph loader */
nuclear@0 113 FT_BASE( void )
nuclear@0 114 FT_GlyphLoader_Rewind( FT_GlyphLoader loader );
nuclear@0 115
nuclear@0 116 /* check that there is enough space to add `n_points' and `n_contours' */
nuclear@0 117 /* to the glyph loader */
nuclear@0 118 FT_BASE( FT_Error )
nuclear@0 119 FT_GlyphLoader_CheckPoints( FT_GlyphLoader loader,
nuclear@0 120 FT_UInt n_points,
nuclear@0 121 FT_UInt n_contours );
nuclear@0 122
nuclear@0 123
nuclear@0 124 #define FT_GLYPHLOADER_CHECK_P( _loader, _count ) \
nuclear@0 125 ( (_count) == 0 || ((_loader)->base.outline.n_points + \
nuclear@0 126 (_loader)->current.outline.n_points + \
nuclear@0 127 (unsigned long)(_count)) <= (_loader)->max_points )
nuclear@0 128
nuclear@0 129 #define FT_GLYPHLOADER_CHECK_C( _loader, _count ) \
nuclear@0 130 ( (_count) == 0 || ((_loader)->base.outline.n_contours + \
nuclear@0 131 (_loader)->current.outline.n_contours + \
nuclear@0 132 (unsigned long)(_count)) <= (_loader)->max_contours )
nuclear@0 133
nuclear@0 134 #define FT_GLYPHLOADER_CHECK_POINTS( _loader, _points,_contours ) \
nuclear@0 135 ( ( FT_GLYPHLOADER_CHECK_P( _loader, _points ) && \
nuclear@0 136 FT_GLYPHLOADER_CHECK_C( _loader, _contours ) ) \
nuclear@0 137 ? 0 \
nuclear@0 138 : FT_GlyphLoader_CheckPoints( (_loader), (_points), (_contours) ) )
nuclear@0 139
nuclear@0 140
nuclear@0 141 /* check that there is enough space to add `n_subs' sub-glyphs to */
nuclear@0 142 /* a glyph loader */
nuclear@0 143 FT_BASE( FT_Error )
nuclear@0 144 FT_GlyphLoader_CheckSubGlyphs( FT_GlyphLoader loader,
nuclear@0 145 FT_UInt n_subs );
nuclear@0 146
nuclear@0 147 /* prepare a glyph loader, i.e. empty the current glyph */
nuclear@0 148 FT_BASE( void )
nuclear@0 149 FT_GlyphLoader_Prepare( FT_GlyphLoader loader );
nuclear@0 150
nuclear@0 151 /* add the current glyph to the base glyph */
nuclear@0 152 FT_BASE( void )
nuclear@0 153 FT_GlyphLoader_Add( FT_GlyphLoader loader );
nuclear@0 154
nuclear@0 155 /* copy points from one glyph loader to another */
nuclear@0 156 FT_BASE( FT_Error )
nuclear@0 157 FT_GlyphLoader_CopyPoints( FT_GlyphLoader target,
nuclear@0 158 FT_GlyphLoader source );
nuclear@0 159
nuclear@0 160 /* */
nuclear@0 161
nuclear@0 162
nuclear@0 163 FT_END_HEADER
nuclear@0 164
nuclear@0 165 #endif /* __FTGLOADR_H__ */
nuclear@0 166
nuclear@0 167
nuclear@0 168 /* END */