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ftmm.c
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00001 /***************************************************************************/ 00002 /* */ 00003 /* ftmm.c */ 00004 /* */ 00005 /* Multiple Master font support (body). */ 00006 /* */ 00007 /* Copyright 1996-2001, 2003, 2004, 2009 by */ 00008 /* David Turner, Robert Wilhelm, and Werner Lemberg. */ 00009 /* */ 00010 /* This file is part of the FreeType project, and may only be used, */ 00011 /* modified, and distributed under the terms of the FreeType project */ 00012 /* license, LICENSE.TXT. By continuing to use, modify, or distribute */ 00013 /* this file you indicate that you have read the license and */ 00014 /* understand and accept it fully. */ 00015 /* */ 00016 /***************************************************************************/ 00017 00018 00019 #include <ft2build.h> 00020 #include FT_MULTIPLE_MASTERS_H 00021 #include FT_INTERNAL_OBJECTS_H 00022 #include FT_SERVICE_MULTIPLE_MASTERS_H 00023 00024 00025 /*************************************************************************/ 00026 /* */ 00027 /* The macro FT_COMPONENT is used in trace mode. It is an implicit */ 00028 /* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log */ 00029 /* messages during execution. */ 00030 /* */ 00031 #undef FT_COMPONENT 00032 #define FT_COMPONENT trace_mm 00033 00034 00035 static FT_Error 00036 ft_face_get_mm_service( FT_Face face, 00037 FT_Service_MultiMasters *aservice ) 00038 { 00039 FT_Error error; 00040 00041 00042 *aservice = NULL; 00043 00044 if ( !face ) 00045 return FT_Err_Invalid_Face_Handle; 00046 00047 error = FT_Err_Invalid_Argument; 00048 00049 if ( FT_HAS_MULTIPLE_MASTERS( face ) ) 00050 { 00051 FT_FACE_LOOKUP_SERVICE( face, 00052 *aservice, 00053 MULTI_MASTERS ); 00054 00055 if ( *aservice ) 00056 error = FT_Err_Ok; 00057 } 00058 00059 return error; 00060 } 00061 00062 00063 /* documentation is in ftmm.h */ 00064 00065 FT_EXPORT_DEF( FT_Error ) 00066 FT_Get_Multi_Master( FT_Face face, 00067 FT_Multi_Master *amaster ) 00068 { 00069 FT_Error error; 00070 FT_Service_MultiMasters service; 00071 00072 00073 error = ft_face_get_mm_service( face, &service ); 00074 if ( !error ) 00075 { 00076 error = FT_Err_Invalid_Argument; 00077 if ( service->get_mm ) 00078 error = service->get_mm( face, amaster ); 00079 } 00080 00081 return error; 00082 } 00083 00084 00085 /* documentation is in ftmm.h */ 00086 00087 FT_EXPORT_DEF( FT_Error ) 00088 FT_Get_MM_Var( FT_Face face, 00089 FT_MM_Var* *amaster ) 00090 { 00091 FT_Error error; 00092 FT_Service_MultiMasters service; 00093 00094 00095 error = ft_face_get_mm_service( face, &service ); 00096 if ( !error ) 00097 { 00098 error = FT_Err_Invalid_Argument; 00099 if ( service->get_mm_var ) 00100 error = service->get_mm_var( face, amaster ); 00101 } 00102 00103 return error; 00104 } 00105 00106 00107 /* documentation is in ftmm.h */ 00108 00109 FT_EXPORT_DEF( FT_Error ) 00110 FT_Set_MM_Design_Coordinates( FT_Face face, 00111 FT_UInt num_coords, 00112 FT_Long* coords ) 00113 { 00114 FT_Error error; 00115 FT_Service_MultiMasters service; 00116 00117 00118 error = ft_face_get_mm_service( face, &service ); 00119 if ( !error ) 00120 { 00121 error = FT_Err_Invalid_Argument; 00122 if ( service->set_mm_design ) 00123 error = service->set_mm_design( face, num_coords, coords ); 00124 } 00125 00126 return error; 00127 } 00128 00129 00130 /* documentation is in ftmm.h */ 00131 00132 FT_EXPORT_DEF( FT_Error ) 00133 FT_Set_Var_Design_Coordinates( FT_Face face, 00134 FT_UInt num_coords, 00135 FT_Fixed* coords ) 00136 { 00137 FT_Error error; 00138 FT_Service_MultiMasters service; 00139 00140 00141 error = ft_face_get_mm_service( face, &service ); 00142 if ( !error ) 00143 { 00144 error = FT_Err_Invalid_Argument; 00145 if ( service->set_var_design ) 00146 error = service->set_var_design( face, num_coords, coords ); 00147 } 00148 00149 return error; 00150 } 00151 00152 00153 /* documentation is in ftmm.h */ 00154 00155 FT_EXPORT_DEF( FT_Error ) 00156 FT_Set_MM_Blend_Coordinates( FT_Face face, 00157 FT_UInt num_coords, 00158 FT_Fixed* coords ) 00159 { 00160 FT_Error error; 00161 FT_Service_MultiMasters service; 00162 00163 00164 error = ft_face_get_mm_service( face, &service ); 00165 if ( !error ) 00166 { 00167 error = FT_Err_Invalid_Argument; 00168 if ( service->set_mm_blend ) 00169 error = service->set_mm_blend( face, num_coords, coords ); 00170 } 00171 00172 return error; 00173 } 00174 00175 00176 /* documentation is in ftmm.h */ 00177 00178 /* This is exactly the same as the previous function. It exists for */ 00179 /* orthogonality. */ 00180 00181 FT_EXPORT_DEF( FT_Error ) 00182 FT_Set_Var_Blend_Coordinates( FT_Face face, 00183 FT_UInt num_coords, 00184 FT_Fixed* coords ) 00185 { 00186 FT_Error error; 00187 FT_Service_MultiMasters service; 00188 00189 00190 error = ft_face_get_mm_service( face, &service ); 00191 if ( !error ) 00192 { 00193 error = FT_Err_Invalid_Argument; 00194 if ( service->set_mm_blend ) 00195 error = service->set_mm_blend( face, num_coords, coords ); 00196 } 00197 00198 return error; 00199 } 00200 00201 00202 /* END */
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