| 1 | /***************************************************************************/ |
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| 2 | /* */ |
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| 3 | /* ftmm.c */ |
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| 4 | /* */ |
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| 5 | /* Multiple Master font support (body). */ |
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| 6 | /* */ |
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| 7 | /* Copyright 1996-2001, 2003, 2004, 2009 by */ |
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| 8 | /* David Turner, Robert Wilhelm, and Werner Lemberg. */ |
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| 9 | /* */ |
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| 10 | /* This file is part of the FreeType project, and may only be used, */ |
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| 11 | /* modified, and distributed under the terms of the FreeType project */ |
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| 12 | /* license, LICENSE.TXT. By continuing to use, modify, or distribute */ |
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| 13 | /* this file you indicate that you have read the license and */ |
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| 14 | /* understand and accept it fully. */ |
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| 15 | /* */ |
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| 16 | /***************************************************************************/ |
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| 17 | |
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| 18 | |
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| 19 | #include <ft2build.h> |
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| 20 | #include FT_MULTIPLE_MASTERS_H |
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| 21 | #include FT_INTERNAL_OBJECTS_H |
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| 22 | #include FT_SERVICE_MULTIPLE_MASTERS_H |
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| 23 | |
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| 24 | |
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| 25 | /*************************************************************************/ |
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| 26 | /* */ |
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| 27 | /* The macro FT_COMPONENT is used in trace mode. It is an implicit */ |
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| 28 | /* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log */ |
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| 29 | /* messages during execution. */ |
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| 30 | /* */ |
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| 31 | #undef FT_COMPONENT |
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| 32 | #define FT_COMPONENT trace_mm |
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| 33 | |
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| 34 | |
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| 35 | static FT_Error |
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| 36 | ft_face_get_mm_service( FT_Face face, |
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| 37 | FT_Service_MultiMasters *aservice ) |
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| 38 | { |
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| 39 | FT_Error error; |
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| 40 | |
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| 41 | |
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| 42 | *aservice = NULL; |
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| 43 | |
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| 44 | if ( !face ) |
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| 45 | return FT_Err_Invalid_Face_Handle; |
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| 46 | |
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| 47 | error = FT_Err_Invalid_Argument; |
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| 48 | |
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| 49 | if ( FT_HAS_MULTIPLE_MASTERS( face ) ) |
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| 50 | { |
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| 51 | FT_FACE_LOOKUP_SERVICE( face, |
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| 52 | *aservice, |
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| 53 | MULTI_MASTERS ); |
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| 54 | |
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| 55 | if ( *aservice ) |
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| 56 | error = FT_Err_Ok; |
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| 57 | } |
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| 58 | |
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| 59 | return error; |
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| 60 | } |
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| 61 | |
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| 62 | |
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| 63 | /* documentation is in ftmm.h */ |
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| 64 | |
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| 65 | FT_EXPORT_DEF( FT_Error ) |
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| 66 | FT_Get_Multi_Master( FT_Face face, |
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| 67 | FT_Multi_Master *amaster ) |
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| 68 | { |
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| 69 | FT_Error error; |
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| 70 | FT_Service_MultiMasters service; |
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| 71 | |
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| 72 | |
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| 73 | error = ft_face_get_mm_service( face, &service ); |
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| 74 | if ( !error ) |
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| 75 | { |
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| 76 | error = FT_Err_Invalid_Argument; |
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| 77 | if ( service->get_mm ) |
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| 78 | error = service->get_mm( face, amaster ); |
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| 79 | } |
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| 80 | |
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| 81 | return error; |
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| 82 | } |
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| 83 | |
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| 84 | |
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| 85 | /* documentation is in ftmm.h */ |
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| 86 | |
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| 87 | FT_EXPORT_DEF( FT_Error ) |
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| 88 | FT_Get_MM_Var( FT_Face face, |
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| 89 | FT_MM_Var* *amaster ) |
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| 90 | { |
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| 91 | FT_Error error; |
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| 92 | FT_Service_MultiMasters service; |
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| 93 | |
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| 94 | |
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| 95 | error = ft_face_get_mm_service( face, &service ); |
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| 96 | if ( !error ) |
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| 97 | { |
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| 98 | error = FT_Err_Invalid_Argument; |
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| 99 | if ( service->get_mm_var ) |
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| 100 | error = service->get_mm_var( face, amaster ); |
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| 101 | } |
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| 102 | |
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| 103 | return error; |
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| 104 | } |
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| 105 | |
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| 106 | |
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| 107 | /* documentation is in ftmm.h */ |
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| 108 | |
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| 109 | FT_EXPORT_DEF( FT_Error ) |
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| 110 | FT_Set_MM_Design_Coordinates( FT_Face face, |
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| 111 | FT_UInt num_coords, |
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| 112 | FT_Long* coords ) |
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| 113 | { |
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| 114 | FT_Error error; |
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| 115 | FT_Service_MultiMasters service; |
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| 116 | |
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| 117 | |
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| 118 | error = ft_face_get_mm_service( face, &service ); |
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| 119 | if ( !error ) |
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| 120 | { |
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| 121 | error = FT_Err_Invalid_Argument; |
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| 122 | if ( service->set_mm_design ) |
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| 123 | error = service->set_mm_design( face, num_coords, coords ); |
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| 124 | } |
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| 125 | |
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| 126 | return error; |
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| 127 | } |
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| 128 | |
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| 129 | |
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| 130 | /* documentation is in ftmm.h */ |
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| 131 | |
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| 132 | FT_EXPORT_DEF( FT_Error ) |
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| 133 | FT_Set_Var_Design_Coordinates( FT_Face face, |
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| 134 | FT_UInt num_coords, |
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| 135 | FT_Fixed* coords ) |
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| 136 | { |
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| 137 | FT_Error error; |
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| 138 | FT_Service_MultiMasters service; |
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| 139 | |
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| 140 | |
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| 141 | error = ft_face_get_mm_service( face, &service ); |
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| 142 | if ( !error ) |
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| 143 | { |
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| 144 | error = FT_Err_Invalid_Argument; |
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| 145 | if ( service->set_var_design ) |
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| 146 | error = service->set_var_design( face, num_coords, coords ); |
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| 147 | } |
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| 148 | |
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| 149 | return error; |
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| 150 | } |
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| 151 | |
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| 152 | |
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| 153 | /* documentation is in ftmm.h */ |
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| 154 | |
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| 155 | FT_EXPORT_DEF( FT_Error ) |
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| 156 | FT_Set_MM_Blend_Coordinates( FT_Face face, |
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| 157 | FT_UInt num_coords, |
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| 158 | FT_Fixed* coords ) |
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| 159 | { |
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| 160 | FT_Error error; |
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| 161 | FT_Service_MultiMasters service; |
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| 162 | |
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| 163 | |
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| 164 | error = ft_face_get_mm_service( face, &service ); |
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| 165 | if ( !error ) |
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| 166 | { |
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| 167 | error = FT_Err_Invalid_Argument; |
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| 168 | if ( service->set_mm_blend ) |
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| 169 | error = service->set_mm_blend( face, num_coords, coords ); |
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| 170 | } |
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| 171 | |
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| 172 | return error; |
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| 173 | } |
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| 174 | |
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| 175 | |
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| 176 | /* documentation is in ftmm.h */ |
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| 177 | |
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| 178 | /* This is exactly the same as the previous function. It exists for */ |
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| 179 | /* orthogonality. */ |
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| 180 | |
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| 181 | FT_EXPORT_DEF( FT_Error ) |
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| 182 | FT_Set_Var_Blend_Coordinates( FT_Face face, |
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| 183 | FT_UInt num_coords, |
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| 184 | FT_Fixed* coords ) |
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| 185 | { |
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| 186 | FT_Error error; |
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| 187 | FT_Service_MultiMasters service; |
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| 188 | |
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| 189 | |
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| 190 | error = ft_face_get_mm_service( face, &service ); |
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| 191 | if ( !error ) |
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| 192 | { |
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| 193 | error = FT_Err_Invalid_Argument; |
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| 194 | if ( service->set_mm_blend ) |
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| 195 | error = service->set_mm_blend( face, num_coords, coords ); |
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| 196 | } |
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| 197 | |
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| 198 | return error; |
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| 199 | } |
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| 200 | |
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| 201 | |
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| 202 | /* END */ |
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