1 /****************************************************************************
2 *
3 * svmm.h
4 *
5 * The FreeType Multiple Masters and GX var services (specification).
6 *
7 * Copyright (C) 2003-2020 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 SVMM_H_
20 #define SVMM_H_
21
22 #include FT_INTERNAL_SERVICE_H
23
24
25 FT_BEGIN_HEADER
26
27
28 /*
29 * A service used to manage multiple-masters data in a given face.
30 *
31 * See the related APIs in `ftmm.h' (FT_MULTIPLE_MASTERS_H).
32 *
33 */
34
35 #define FT_SERVICE_ID_MULTI_MASTERS "multi-masters"
36
37
38 typedef FT_Error
39 (*FT_Get_MM_Func)( FT_Face face,
40 FT_Multi_Master* master );
41
42 typedef FT_Error
43 (*FT_Get_MM_Var_Func)( FT_Face face,
44 FT_MM_Var* *master );
45
46 typedef FT_Error
47 (*FT_Set_MM_Design_Func)( FT_Face face,
48 FT_UInt num_coords,
49 FT_Long* coords );
50
51 /* use return value -1 to indicate that the new coordinates */
52 /* are equal to the current ones; no changes are thus needed */
53 typedef FT_Error
54 (*FT_Set_Var_Design_Func)( FT_Face face,
55 FT_UInt num_coords,
56 FT_Fixed* coords );
57
58 /* use return value -1 to indicate that the new coordinates */
59 /* are equal to the current ones; no changes are thus needed */
60 typedef FT_Error
61 (*FT_Set_MM_Blend_Func)( FT_Face face,
62 FT_UInt num_coords,
63 FT_Long* coords );
64
65 typedef FT_Error
66 (*FT_Get_Var_Design_Func)( FT_Face face,
67 FT_UInt num_coords,
68 FT_Fixed* coords );
69
70 typedef FT_Error
71 (*FT_Set_Instance_Func)( FT_Face face,
72 FT_UInt instance_index );
73
74 typedef FT_Error
75 (*FT_Get_MM_Blend_Func)( FT_Face face,
76 FT_UInt num_coords,
77 FT_Long* coords );
78
79 typedef FT_Error
80 (*FT_Get_Var_Blend_Func)( FT_Face face,
81 FT_UInt *num_coords,
82 FT_Fixed* *coords,
83 FT_Fixed* *normalizedcoords,
84 FT_MM_Var* *mm_var );
85
86 typedef void
87 (*FT_Done_Blend_Func)( FT_Face );
88
89 typedef FT_Error
90 (*FT_Set_MM_WeightVector_Func)( FT_Face face,
91 FT_UInt len,
92 FT_Fixed* weight_vector );
93
94 typedef FT_Error
95 (*FT_Get_MM_WeightVector_Func)( FT_Face face,
96 FT_UInt* len,
97 FT_Fixed* weight_vector );
98
99
100 FT_DEFINE_SERVICE( MultiMasters )
101 {
102 FT_Get_MM_Func get_mm;
103 FT_Set_MM_Design_Func set_mm_design;
104 FT_Set_MM_Blend_Func set_mm_blend;
105 FT_Get_MM_Blend_Func get_mm_blend;
106 FT_Get_MM_Var_Func get_mm_var;
107 FT_Set_Var_Design_Func set_var_design;
108 FT_Get_Var_Design_Func get_var_design;
109 FT_Set_Instance_Func set_instance;
110 FT_Set_MM_WeightVector_Func set_mm_weightvector;
111 FT_Get_MM_WeightVector_Func get_mm_weightvector;
112
113 /* for internal use; only needed for code sharing between modules */
114 FT_Get_Var_Blend_Func get_var_blend;
115 FT_Done_Blend_Func done_blend;
116 };
117
118
119 #define FT_DEFINE_SERVICE_MULTIMASTERSREC( class_, \
120 get_mm_, \
121 set_mm_design_, \
122 set_mm_blend_, \
123 get_mm_blend_, \
124 get_mm_var_, \
125 set_var_design_, \
126 get_var_design_, \
127 set_instance_, \
128 set_weightvector_, \
129 get_weightvector_, \
130 get_var_blend_, \
131 done_blend_ ) \
132 static const FT_Service_MultiMastersRec class_ = \
133 { \
134 get_mm_, \
135 set_mm_design_, \
136 set_mm_blend_, \
137 get_mm_blend_, \
138 get_mm_var_, \
139 set_var_design_, \
140 get_var_design_, \
141 set_instance_, \
142 set_weightvector_, \
143 get_weightvector_, \
144 get_var_blend_, \
145 done_blend_ \
146 };
147
148 /* */
149
150
151 FT_END_HEADER
152
153 #endif /* SVMM_H_ */
154
155
156 /* END */