1 /***************************************************************************/ 2 /* */ 3 /* ftmm.c */ 4 /* */ 5 /* Multiple Master font support (body). */ 6 /* */ 7 /* Copyright 1996-2016 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 #include <ft2build.h> 20 #include FT_INTERNAL_DEBUG_H 21 22 #include FT_MULTIPLE_MASTERS_H 23 #include FT_INTERNAL_OBJECTS_H 24 #include FT_SERVICE_MULTIPLE_MASTERS_H 25 26 27 /*************************************************************************/ 28 /* */ 29 /* The macro FT_COMPONENT is used in trace mode. It is an implicit */ 30 /* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log */ 31 /* messages during execution. */ 32 /* */ 33 #undef FT_COMPONENT 34 #define FT_COMPONENT trace_mm 35 36 37 static FT_Error 38 ft_face_get_mm_service( FT_Face face, 39 FT_Service_MultiMasters *aservice ) 40 { 41 FT_Error error; 42 43 44 *aservice = NULL; 45 46 if ( !face ) 47 return FT_THROW( Invalid_Face_Handle ); 48 49 error = FT_ERR( Invalid_Argument ); 50 51 if ( FT_HAS_MULTIPLE_MASTERS( face ) ) 52 { 53 FT_FACE_LOOKUP_SERVICE( face, 54 *aservice, 55 MULTI_MASTERS ); 56 57 if ( *aservice ) 58 error = FT_Err_Ok; 59 } 60 61 return error; 62 } 63 64 65 /* documentation is in ftmm.h */ 66 67 FT_EXPORT_DEF( FT_Error ) 68 FT_Get_Multi_Master( FT_Face face, 69 FT_Multi_Master *amaster ) 70 { 71 FT_Error error; 72 FT_Service_MultiMasters service; 73 74 75 /* check of `face' delayed to `ft_face_get_mm_service' */ 76 77 if ( !amaster ) 78 return FT_THROW( Invalid_Argument ); 79 80 error = ft_face_get_mm_service( face, &service ); 81 if ( !error ) 82 { 83 error = FT_ERR( Invalid_Argument ); 84 if ( service->get_mm ) 85 error = service->get_mm( face, amaster ); 86 } 87 88 return error; 89 } 90 91 92 /* documentation is in ftmm.h */ 93 94 FT_EXPORT_DEF( FT_Error ) 95 FT_Get_MM_Var( FT_Face face, 96 FT_MM_Var* *amaster ) 97 { 98 FT_Error error; 99 FT_Service_MultiMasters service; 100 101 102 /* check of `face' delayed to `ft_face_get_mm_service' */ 103 104 if ( !amaster ) 105 return FT_THROW( Invalid_Argument ); 106 107 error = ft_face_get_mm_service( face, &service ); 108 if ( !error ) 109 { 110 error = FT_ERR( Invalid_Argument ); 111 if ( service->get_mm_var ) 112 error = service->get_mm_var( face, amaster ); 113 } 114 115 return error; 116 } 117 118 119 /* documentation is in ftmm.h */ 120 121 FT_EXPORT_DEF( FT_Error ) 122 FT_Set_MM_Design_Coordinates( FT_Face face, 123 FT_UInt num_coords, 124 FT_Long* coords ) 125 { 126 FT_Error error; 127 FT_Service_MultiMasters service; 128 129 130 /* check of `face' delayed to `ft_face_get_mm_service' */ 131 132 if ( !coords ) 133 return FT_THROW( Invalid_Argument ); 134 135 error = ft_face_get_mm_service( face, &service ); 136 if ( !error ) 137 { 138 error = FT_ERR( Invalid_Argument ); 139 if ( service->set_mm_design ) 140 error = service->set_mm_design( face, num_coords, coords ); 141 } 142 143 return error; 144 } 145 146 147 /* documentation is in ftmm.h */ 148 149 FT_EXPORT_DEF( FT_Error ) 150 FT_Set_Var_Design_Coordinates( FT_Face face, 151 FT_UInt num_coords, 152 FT_Fixed* coords ) 153 { 154 FT_Error error; 155 FT_Service_MultiMasters service; 156 157 158 /* check of `face' delayed to `ft_face_get_mm_service' */ 159 160 if ( !coords ) 161 return FT_THROW( Invalid_Argument ); 162 163 error = ft_face_get_mm_service( face, &service ); 164 if ( !error ) 165 { 166 error = FT_ERR( Invalid_Argument ); 167 if ( service->set_var_design ) 168 error = service->set_var_design( face, num_coords, coords ); 169 } 170 171 return error; 172 } 173 174 175 /* documentation is in ftmm.h */ 176 177 FT_EXPORT_DEF( FT_Error ) 178 FT_Set_MM_Blend_Coordinates( FT_Face face, 179 FT_UInt num_coords, 180 FT_Fixed* coords ) 181 { 182 FT_Error error; 183 FT_Service_MultiMasters service; 184 185 186 /* check of `face' delayed to `ft_face_get_mm_service' */ 187 188 if ( !coords ) 189 return FT_THROW( Invalid_Argument ); 190 191 error = ft_face_get_mm_service( face, &service ); 192 if ( !error ) 193 { 194 error = FT_ERR( Invalid_Argument ); 195 if ( service->set_mm_blend ) 196 error = service->set_mm_blend( face, num_coords, coords ); 197 } 198 199 return error; 200 } 201 202 203 /* documentation is in ftmm.h */ 204 205 /* This is exactly the same as the previous function. It exists for */ 206 /* orthogonality. */ 207 208 FT_EXPORT_DEF( FT_Error ) 209 FT_Set_Var_Blend_Coordinates( FT_Face face, 210 FT_UInt num_coords, 211 FT_Fixed* coords ) 212 { 213 FT_Error error; 214 FT_Service_MultiMasters service; 215 216 217 /* check of `face' delayed to `ft_face_get_mm_service' */ 218 219 if ( !coords ) 220 return FT_THROW( Invalid_Argument ); 221 222 error = ft_face_get_mm_service( face, &service ); 223 if ( !error ) 224 { 225 error = FT_ERR( Invalid_Argument ); 226 if ( service->set_mm_blend ) 227 error = service->set_mm_blend( face, num_coords, coords ); 228 } 229 230 return error; 231 } 232 233 234 /* END */ 235
