1 /***************************************************************************/ 2 /* */ 3 /* afmodule.c */ 4 /* */ 5 /* Auto-fitter module implementation (body). */ 6 /* */ 7 /* Copyright 2003-2006, 2009, 2011-2013 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 "afglobal.h" 20 #include "afmodule.h" 21 #include "afloader.h" 22 #include "aferrors.h" 23 #include "afpic.h" 24 25 #ifdef FT_DEBUG_AUTOFIT 26 int _af_debug_disable_horz_hints; 27 int _af_debug_disable_vert_hints; 28 int _af_debug_disable_blue_hints; 29 void* _af_debug_hints; 30 #endif 31 32 #include FT_INTERNAL_OBJECTS_H 33 #include FT_INTERNAL_DEBUG_H 34 #include FT_AUTOHINTER_H 35 #include FT_SERVICE_PROPERTIES_H 36 37 38 /*************************************************************************/ 39 /* */ 40 /* The macro FT_COMPONENT is used in trace mode. It is an implicit */ 41 /* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log */ 42 /* messages during execution. */ 43 /* */ 44 #undef FT_COMPONENT 45 #define FT_COMPONENT trace_afmodule 46 47 48 FT_Error 49 af_property_get_face_globals( FT_Face face, 50 AF_FaceGlobals* aglobals, 51 AF_Module module ) 52 { 53 FT_Error error = FT_Err_Ok; 54 AF_FaceGlobals globals; 55 56 57 if ( !face ) 58 return FT_THROW( Invalid_Argument ); 59 60 globals = (AF_FaceGlobals)face->autohint.data; 61 if ( !globals ) 62 { 63 /* trigger computation of the global script data */ 64 /* in case it hasn't been done yet */ 65 error = af_face_globals_new( face, &globals, module ); 66 if ( !error ) 67 { 68 face->autohint.data = 69 (FT_Pointer)globals; 70 face->autohint.finalizer = 71 (FT_Generic_Finalizer)af_face_globals_free; 72 } 73 } 74 75 if ( !error ) 76 *aglobals = globals; 77 78 return error; 79 } 80 81 82 FT_Error 83 af_property_set( FT_Module ft_module, 84 const char* property_name, 85 const void* value ) 86 { 87 FT_Error error = FT_Err_Ok; 88 AF_Module module = (AF_Module)ft_module; 89 90 91 if ( !ft_strcmp( property_name, "fallback-script" ) ) 92 { 93 FT_UInt* fallback_script = (FT_UInt*)value; 94 95 96 module->fallback_script = *fallback_script; 97 98 return error; 99 } 100 else if ( !ft_strcmp( property_name, "increase-x-height" ) ) 101 { 102 FT_Prop_IncreaseXHeight* prop = (FT_Prop_IncreaseXHeight*)value; 103 AF_FaceGlobals globals; 104 105 106 error = af_property_get_face_globals( prop->face, &globals, module ); 107 if ( !error ) 108 globals->increase_x_height = prop->limit; 109 110 return error; 111 } 112 113 FT_TRACE0(( "af_property_set: missing property `%s'\n", 114 property_name )); 115 return FT_THROW( Missing_Property ); 116 } 117 118 119 FT_Error 120 af_property_get( FT_Module ft_module, 121 const char* property_name, 122 void* value ) 123 { 124 FT_Error error = FT_Err_Ok; 125 AF_Module module = (AF_Module)ft_module; 126 FT_UInt fallback_script = module->fallback_script; 127 128 129 if ( !ft_strcmp( property_name, "glyph-to-script-map" ) ) 130 { 131 FT_Prop_GlyphToScriptMap* prop = (FT_Prop_GlyphToScriptMap*)value; 132 AF_FaceGlobals globals; 133 134 135 error = af_property_get_face_globals( prop->face, &globals, module ); 136 if ( !error ) 137 prop->map = globals->glyph_scripts; 138 139 return error; 140 } 141 else if ( !ft_strcmp( property_name, "fallback-script" ) ) 142 { 143 FT_UInt* val = (FT_UInt*)value; 144 145 146 *val = fallback_script; 147 148 return error; 149 } 150 else if ( !ft_strcmp( property_name, "increase-x-height" ) ) 151 { 152 FT_Prop_IncreaseXHeight* prop = (FT_Prop_IncreaseXHeight*)value; 153 AF_FaceGlobals globals; 154 155 156 error = af_property_get_face_globals( prop->face, &globals, module ); 157 if ( !error ) 158 prop->limit = globals->increase_x_height; 159 160 return error; 161 } 162 163 164 FT_TRACE0(( "af_property_get: missing property `%s'\n", 165 property_name )); 166 return FT_THROW( Missing_Property ); 167 } 168 169 170 FT_DEFINE_SERVICE_PROPERTIESREC( 171 af_service_properties, 172 (FT_Properties_SetFunc)af_property_set, 173 (FT_Properties_GetFunc)af_property_get ) 174 175 176 FT_DEFINE_SERVICEDESCREC1( 177 af_services, 178 FT_SERVICE_ID_PROPERTIES, &AF_SERVICE_PROPERTIES_GET ) 179 180 181 FT_CALLBACK_DEF( FT_Module_Interface ) 182 af_get_interface( FT_Module module, 183 const char* module_interface ) 184 { 185 /* AF_SERVICES_GET derefers `library' in PIC mode */ 186 #ifdef FT_CONFIG_OPTION_PIC 187 FT_Library library; 188 189 190 if ( !module ) 191 return NULL; 192 library = module->library; 193 if ( !library ) 194 return NULL; 195 #else 196 FT_UNUSED( module ); 197 #endif 198 199 return ft_service_list_lookup( AF_SERVICES_GET, module_interface ); 200 } 201 202 203 FT_CALLBACK_DEF( FT_Error ) 204 af_autofitter_init( FT_Module ft_module ) /* AF_Module */ 205 { 206 AF_Module module = (AF_Module)ft_module; 207 208 209 module->fallback_script = AF_SCRIPT_FALLBACK; 210 211 return af_loader_init( module ); 212 } 213 214 215 FT_CALLBACK_DEF( void ) 216 af_autofitter_done( FT_Module ft_module ) /* AF_Module */ 217 { 218 AF_Module module = (AF_Module)ft_module; 219 220 221 af_loader_done( module ); 222 } 223 224 225 FT_CALLBACK_DEF( FT_Error ) 226 af_autofitter_load_glyph( AF_Module module, 227 FT_GlyphSlot slot, 228 FT_Size size, 229 FT_UInt glyph_index, 230 FT_Int32 load_flags ) 231 { 232 FT_UNUSED( size ); 233 234 return af_loader_load_glyph( module, slot->face, 235 glyph_index, load_flags ); 236 } 237 238 239 FT_DEFINE_AUTOHINTER_INTERFACE( 240 af_autofitter_interface, 241 NULL, /* reset_face */ 242 NULL, /* get_global_hints */ 243 NULL, /* done_global_hints */ 244 (FT_AutoHinter_GlyphLoadFunc)af_autofitter_load_glyph ) /* load_glyph */ 245 246 247 FT_DEFINE_MODULE( 248 autofit_module_class, 249 250 FT_MODULE_HINTER, 251 sizeof ( AF_ModuleRec ), 252 253 "autofitter", 254 0x10000L, /* version 1.0 of the autofitter */ 255 0x20000L, /* requires FreeType 2.0 or above */ 256 257 (const void*)&AF_INTERFACE_GET, 258 259 (FT_Module_Constructor)af_autofitter_init, 260 (FT_Module_Destructor) af_autofitter_done, 261 (FT_Module_Requester) af_get_interface ) 262 263 264 /* END */ 265
