diff options
Diffstat (limited to 'src/otlayout/otlayout.c')
| -rw-r--r-- | src/otlayout/otlayout.c | 269 |
1 files changed, 269 insertions, 0 deletions
diff --git a/src/otlayout/otlayout.c b/src/otlayout/otlayout.c new file mode 100644 index 000000000..18bb55aa4 --- /dev/null +++ b/src/otlayout/otlayout.c @@ -0,0 +1,269 @@ +/***************************************************************************/ +/* */ +/* otlayout.c */ +/* */ +/* OpenType based layout engine(body). */ +/* */ +/* Copyright 2003 by */ +/* Masatake YAMATO and Redhat K.K. */ +/* */ +/* This file may only be used, */ +/* modified, and distributed under the terms of the FreeType project */ +/* license, LICENSE.TXT. By continuing to use, modify, or distribute */ +/* this file you indicate that you have read the license and */ +/* understand and accept it fully. */ +/* */ +/***************************************************************************/ + +/***************************************************************************/ +/* Development of the code in this file is support of */ +/* Information-technology Promotion Agency, Japan. */ +/***************************************************************************/ + +/* + * Experimental: No support for gpos now. + */ + +#include <ft2build.h> +#include FT_LIST_H +#include FT_OTLAYOUT_H + +#include "otltypes.h" +#include "ot-types.h" +#include "ot-ruleset.h" +#include "ot-info.h" +#include "oterrors.h" + + FT_LOCAL_DEF ( FT_Error ) + otl_get_font ( FT_Face face, FTL_Font * font) + { + *font = ((OT_Face)face)->extra.data; + + if ( *font ) + return FT_Err_Ok; + else + return OT_Err_Invalid_Face_Handle; + } + + FT_LOCAL_DEF ( FTL_EngineType ) + otl_get_engine_type ( FT_Face face ) + { + return FTL_OPENTYPE_ENGINE; + } + + FT_LOCAL ( FT_Error ) + otl_new_features_request( FT_Face face, FTL_FeaturesRequest * ftl_request) + { + FT_Error error; + FT_Memory memory = FT_FACE_MEMORY(face); + OTL_Font font; + OTL_FeaturesRequest request; + + if (( error = otl_get_font ( face, (FTL_Font*)&font ) )) + goto Exit; + + if ( FT_NEW(request) ) + goto Exit; + + request->ruleset = ot_ruleset_new ( font->info ); + if ( !request->ruleset ) + { + error = OT_Err_Invalid_Argument; /* ??? */ + goto Failure; + } + + if (( error = FTL_FeaturesRequest_Init ( face, (FTL_FeaturesRequest)request ) )) + goto Failure; + *ftl_request = (FTL_FeaturesRequest)request; + Exit: + return error; + Failure: + if ( request->ruleset ) + ot_ruleset_delete( request->ruleset ); + FT_FREE( request ); + return error; + } + + FT_LOCAL ( FT_Error ) + otl_done_features_request( FTL_FeaturesRequest request) + { + FT_Error error; + FTL_Font font; + FT_Face face; + FT_Memory memory; + + FT_ASSERT( request ); + font = FTL_FEATURES_REQUEST_FONT ( request ); + + FT_ASSERT( font ); + face = FTL_FONT_FACE(font); + + if ( !face ) + return OT_Err_Invalid_Argument; + memory = FT_FACE_MEMORY( face ); + ot_ruleset_delete ( ((OTL_FeaturesRequest)request)->ruleset ); + error = FTL_FeaturesRequest_Finalize ( request ); + FT_FREE( request ); /* broken */ + return error; + } + + FT_LOCAL ( FT_Error ) + otl_copy_features_request( FTL_FeaturesRequest from, + FTL_FeaturesRequest to) + { + FT_Error error; + ot_ruleset_copy(((OTL_FeaturesRequest)from)->ruleset, ((OTL_FeaturesRequest)to)->ruleset); + error = FTL_FeaturesRequest_Copy( from, to ); + return error; + } + + FT_LOCAL ( FT_Error ) + otl_substitute_glyphs ( FT_Face face, + FTL_FeaturesRequest request, + FTL_Glyphs_Array in, + FTL_Glyphs_Array out ) + { + FT_Error error = FT_Err_Ok; + if (( error = FTL_Copy_Glyphs_Array ( in, out ) )) + return error; + ot_ruleset_shape ( ((OTL_FeaturesRequest)request)->ruleset, out ); + return FT_Err_Ok; + } + + FT_EXPORT( FT_Bool ) + OTL_FeaturesRequest_Find_Script ( OTL_FeaturesRequest request, + OTTableType table_type, + OTTag script_tag, + FT_UInt *script_index) + { + OTL_Font font = (OTL_Font)FTL_FEATURES_REQUEST_FONT( request ); + return ot_info_find_script ( font->info, + table_type, + script_tag, + script_index ) + ? 1: 0; + + } + + FT_EXPORT( FT_Bool ) + OTL_FeaturesRequest_Find_Language ( OTL_FeaturesRequest request, + OTTableType table_type, + FT_UInt script_index, + OTTag language_tag, + FT_UInt *language_index, + FT_UInt *required_feature_index ) + { + OTL_Font font = (OTL_Font)FTL_FEATURES_REQUEST_FONT( request ); + return ot_info_find_language ( font->info, + table_type, + script_index, + language_tag, + language_index, + required_feature_index ) + ? 1: 0; + } + + FT_EXPORT ( FT_Bool ) + OTL_FeaturesRequest_Find_Feature ( OTL_FeaturesRequest request, + OTTableType table_type, + OTTag feature_tag, + FT_UInt script_index, + FT_UInt language_index, + FT_UInt *feature_index ) + { + OTL_Font font = (OTL_Font)FTL_FEATURES_REQUEST_FONT( request ); + return ot_info_find_feature ( font->info, + table_type, + feature_tag, + script_index, + language_index, + feature_index ) + ? 1: 0; + } + + FT_EXPORT ( OTL_Tag_List ) + OTL_FeaturesRequest_List_Scripts ( OTL_FeaturesRequest request, + OTTableType table_type ) + { + FT_Error error; + OTL_Font font = (OTL_Font)FTL_FEATURES_REQUEST_FONT( request ); + FT_Face face = FTL_FONT_FACE(font); + FT_Memory memory = FT_FACE_MEMORY(face); + OTL_Tag_List tag_list; + if ( FT_NEW(tag_list) ) + return NULL; + + tag_list->request = request; + tag_list->tags = ot_info_list_scripts( font->info, table_type ); + return tag_list; + } + + FT_EXPORT ( OTL_Tag_List ) + OTL_FeaturesRequest_List_Languages ( OTL_FeaturesRequest request, + OTTableType table_type, + FT_UInt script_index ) + { + FT_Error error; + OTL_Font font = (OTL_Font)FTL_FEATURES_REQUEST_FONT( request ); + FT_Face face = FTL_FONT_FACE( font ); + FT_Memory memory = FT_FACE_MEMORY( face ); + OTL_Tag_List tag_list; + if ( FT_NEW(tag_list) ) + return NULL; + + tag_list->request = request; + tag_list->tags = ot_info_list_languages( font->info, + table_type, + script_index, + 0 ); + return tag_list; + } + + FT_EXPORT ( OTL_Tag_List ) + OTL_FeaturesRequest_List_Features ( OTL_FeaturesRequest request, + OTTableType table_type, + FT_UInt script_index, + FT_UInt language_index ) + { + FT_Error error; + OTL_Font font = (OTL_Font)FTL_FEATURES_REQUEST_FONT( request ); + FT_Face face = FTL_FONT_FACE(font); + FT_Memory memory = FT_FACE_MEMORY( face ); + OTL_Tag_List tag_list; + if ( FT_NEW(tag_list) ) + return NULL; + + tag_list->request = request; + tag_list->tags = ot_info_list_features( font->info, + table_type, + 0, + script_index, + language_index ); + return tag_list; + } + + FT_EXPORT ( FT_Error ) + OTL_Tag_List_Done ( OTL_Tag_List taglist ) + { + FTL_FeaturesRequest request = (FTL_FeaturesRequest)taglist->request; + FTL_Font font = FTL_FEATURES_REQUEST_FONT( request ); + FT_Face face = FTL_FONT_FACE(font); + FT_Memory memory = FT_FACE_MEMORY( face ); + FT_FREE ( taglist ); + return FT_Err_Ok; + } + + FT_EXPORT ( FT_Error ) + OTL_FeaturesRequest_Add_Feature ( OTL_FeaturesRequest request, + OTTableType table_type, + FT_UInt feature_index, + FT_ULong property_bit) + { + ot_ruleset_add_feature( request->ruleset, + table_type, + feature_index, + property_bit ); + return FT_Err_Ok; + } + +/* END */ |