5172
|
1 |
/***************************************************************************/
|
|
2 |
/* */
|
|
3 |
/* ftgloadr.h */
|
|
4 |
/* */
|
|
5 |
/* The FreeType glyph loader (specification). */
|
|
6 |
/* */
|
|
7 |
/* Copyright 2002, 2003, 2005, 2006 by */
|
|
8 |
/* David Turner, Robert Wilhelm, and Werner Lemberg */
|
|
9 |
/* */
|
|
10 |
/* This file is part of the FreeType project, and may only be used, */
|
|
11 |
/* modified, and distributed under the terms of the FreeType project */
|
|
12 |
/* license, LICENSE.TXT. By continuing to use, modify, or distribute */
|
|
13 |
/* this file you indicate that you have read the license and */
|
|
14 |
/* understand and accept it fully. */
|
|
15 |
/* */
|
|
16 |
/***************************************************************************/
|
|
17 |
|
|
18 |
|
|
19 |
#ifndef __FTGLOADR_H__
|
|
20 |
#define __FTGLOADR_H__
|
|
21 |
|
|
22 |
|
|
23 |
#include <ft2build.h>
|
|
24 |
#include FT_FREETYPE_H
|
|
25 |
|
|
26 |
|
|
27 |
FT_BEGIN_HEADER
|
|
28 |
|
|
29 |
|
|
30 |
/*************************************************************************/
|
|
31 |
/* */
|
|
32 |
/* <Struct> */
|
|
33 |
/* FT_GlyphLoader */
|
|
34 |
/* */
|
|
35 |
/* <Description> */
|
|
36 |
/* The glyph loader is an internal object used to load several glyphs */
|
|
37 |
/* together (for example, in the case of composites). */
|
|
38 |
/* */
|
|
39 |
/* <Note> */
|
|
40 |
/* The glyph loader implementation is not part of the high-level API, */
|
|
41 |
/* hence the forward structure declaration. */
|
|
42 |
/* */
|
|
43 |
typedef struct FT_GlyphLoaderRec_* FT_GlyphLoader ;
|
|
44 |
|
|
45 |
|
|
46 |
#if 0 /* moved to freetype.h in version 2.2 */
|
|
47 |
#define FT_SUBGLYPH_FLAG_ARGS_ARE_WORDS 1
|
|
48 |
#define FT_SUBGLYPH_FLAG_ARGS_ARE_XY_VALUES 2
|
|
49 |
#define FT_SUBGLYPH_FLAG_ROUND_XY_TO_GRID 4
|
|
50 |
#define FT_SUBGLYPH_FLAG_SCALE 8
|
|
51 |
#define FT_SUBGLYPH_FLAG_XY_SCALE 0x40
|
|
52 |
#define FT_SUBGLYPH_FLAG_2X2 0x80
|
|
53 |
#define FT_SUBGLYPH_FLAG_USE_MY_METRICS 0x200
|
|
54 |
#endif
|
|
55 |
|
|
56 |
|
|
57 |
typedef struct FT_SubGlyphRec_
|
|
58 |
{
|
|
59 |
FT_Int index;
|
|
60 |
FT_UShort flags;
|
|
61 |
FT_Int arg1;
|
|
62 |
FT_Int arg2;
|
|
63 |
FT_Matrix transform;
|
|
64 |
|
|
65 |
} FT_SubGlyphRec;
|
|
66 |
|
|
67 |
|
|
68 |
typedef struct FT_GlyphLoadRec_
|
|
69 |
{
|
|
70 |
FT_Outline outline; /* outline */
|
|
71 |
FT_Vector* extra_points; /* extra points table */
|
|
72 |
FT_Vector* extra_points2; /* second extra points table */
|
|
73 |
FT_UInt num_subglyphs; /* number of subglyphs */
|
|
74 |
FT_SubGlyph subglyphs; /* subglyphs */
|
|
75 |
|
|
76 |
} FT_GlyphLoadRec, *FT_GlyphLoad;
|
|
77 |
|
|
78 |
|
|
79 |
typedef struct FT_GlyphLoaderRec_
|
|
80 |
{
|
|
81 |
FT_Memory memory;
|
|
82 |
FT_UInt max_points;
|
|
83 |
FT_UInt max_contours;
|
|
84 |
FT_UInt max_subglyphs;
|
|
85 |
FT_Bool use_extra;
|
|
86 |
|
|
87 |
FT_GlyphLoadRec base;
|
|
88 |
FT_GlyphLoadRec current;
|
|
89 |
|
|
90 |
void* other; /* for possible future extension? */
|
|
91 |
|
|
92 |
} FT_GlyphLoaderRec;
|
|
93 |
|
|
94 |
|
|
95 |
/* create new empty glyph loader */
|
|
96 |
FT_BASE( FT_Error )
|
|
97 |
FT_GlyphLoader_New( FT_Memory memory,
|
|
98 |
FT_GlyphLoader *aloader );
|
|
99 |
|
|
100 |
/* add an extra points table to a glyph loader */
|
|
101 |
FT_BASE( FT_Error )
|
|
102 |
FT_GlyphLoader_CreateExtra( FT_GlyphLoader loader );
|
|
103 |
|
|
104 |
/* destroy a glyph loader */
|
|
105 |
FT_BASE( void )
|
|
106 |
FT_GlyphLoader_Done( FT_GlyphLoader loader );
|
|
107 |
|
|
108 |
/* reset a glyph loader (frees everything int it) */
|
|
109 |
FT_BASE( void )
|
|
110 |
FT_GlyphLoader_Reset( FT_GlyphLoader loader );
|
|
111 |
|
|
112 |
/* rewind a glyph loader */
|
|
113 |
FT_BASE( void )
|
|
114 |
FT_GlyphLoader_Rewind( FT_GlyphLoader loader );
|
|
115 |
|
|
116 |
/* check that there is enough space to add `n_points' and `n_contours' */
|
|
117 |
/* to the glyph loader */
|
|
118 |
FT_BASE( FT_Error )
|
|
119 |
FT_GlyphLoader_CheckPoints( FT_GlyphLoader loader,
|
|
120 |
FT_UInt n_points,
|
|
121 |
FT_UInt n_contours );
|
|
122 |
|
|
123 |
|
|
124 |
#define FT_GLYPHLOADER_CHECK_P( _loader, _count ) \
|
|
125 |
( (_count) == 0 || ((_loader)->base.outline.n_points + \
|
|
126 |
(_loader)->current.outline.n_points + \
|
|
127 |
(unsigned long)(_count)) <= (_loader)->max_points )
|
|
128 |
|
|
129 |
#define FT_GLYPHLOADER_CHECK_C( _loader, _count ) \
|
|
130 |
( (_count) == 0 || ((_loader)->base.outline.n_contours + \
|
|
131 |
(_loader)->current.outline.n_contours + \
|
|
132 |
(unsigned long)(_count)) <= (_loader)->max_contours )
|
|
133 |
|
|
134 |
#define FT_GLYPHLOADER_CHECK_POINTS( _loader, _points,_contours ) \
|
|
135 |
( ( FT_GLYPHLOADER_CHECK_P( _loader, _points ) && \
|
|
136 |
FT_GLYPHLOADER_CHECK_C( _loader, _contours ) ) \
|
|
137 |
? 0 \
|
|
138 |
: FT_GlyphLoader_CheckPoints( (_loader), (_points), (_contours) ) )
|
|
139 |
|
|
140 |
|
|
141 |
/* check that there is enough space to add `n_subs' sub-glyphs to */
|
|
142 |
/* a glyph loader */
|
|
143 |
FT_BASE( FT_Error )
|
|
144 |
FT_GlyphLoader_CheckSubGlyphs( FT_GlyphLoader loader,
|
|
145 |
FT_UInt n_subs );
|
|
146 |
|
|
147 |
/* prepare a glyph loader, i.e. empty the current glyph */
|
|
148 |
FT_BASE( void )
|
|
149 |
FT_GlyphLoader_Prepare( FT_GlyphLoader loader );
|
|
150 |
|
|
151 |
/* add the current glyph to the base glyph */
|
|
152 |
FT_BASE( void )
|
|
153 |
FT_GlyphLoader_Add( FT_GlyphLoader loader );
|
|
154 |
|
|
155 |
/* copy points from one glyph loader to another */
|
|
156 |
FT_BASE( FT_Error )
|
|
157 |
FT_GlyphLoader_CopyPoints( FT_GlyphLoader target,
|
|
158 |
FT_GlyphLoader source );
|
|
159 |
|
|
160 |
/* */
|
|
161 |
|
|
162 |
|
|
163 |
FT_END_HEADER
|
|
164 |
|
|
165 |
#endif /* __FTGLOADR_H__ */
|
|
166 |
|
|
167 |
|
|
168 |
/* END */
|