kc3-lang/freetype/src/shared/sfnt.h
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Hash : 30a0c626
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Date : 2000-01-07T14:07:21
Update some copyrights here and there
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src/shared/sfnt.h
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/***************************************************************************/ /* */ /* sfnt.h */ /* */ /* High-level `sfnt' driver interface (specification). */ /* */ /* Copyright 1996-2000 by */ /* David Turner, Robert Wilhelm, and Werner Lemberg. */ /* */ /* This file is part of the FreeType project, and 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. */ /* */ /***************************************************************************/ #ifndef SFNT_H #define SFNT_H #include <freetype.h> #include <tttypes.h> /*************************************************************************/ /* */ /* <FuncType> */ /* TT_Load_Directory_Func */ /* */ /* <Description> */ /* Loads the table directory into a face object. */ /* */ /* <Input> */ /* face :: A handle to the target face object. */ /* stream :: The input stream. */ /* faceIndex :: The index of the TrueType font, if we're opening a */ /* collection. */ /* */ /* <Return> */ /* TrueType error code. 0 means success. */ /* */ /* <Note> */ /* The stream cursor must be at the font file's origin */ /* */ typedef TT_Error (*TT_Load_Directory_Func)( TT_Face face, FT_Stream stream, TT_Long faceIndex ); /*************************************************************************/ /* */ /* <FuncType> */ /* TT_Load_Any_Func */ /* */ /* <Description> */ /* Loads any font table into client memory. Used by the */ /* TT_Get_Font_Data() API function. */ /* */ /* <Input> */ /* face :: The face object to look for. */ /* */ /* tag :: The tag of table to load. Use the value 0 if you want */ /* to access the whole font file, else set this parameter */ /* to a valid TrueType table tag that you can forge with */ /* the MAKE_TT_TAG macro. */ /* */ /* offset :: The starting offset in the table (or the file if */ /* tag == 0). */ /* */ /* length :: The address of the decision variable: */ /* */ /* If length == NULL: */ /* Loads the whole table. Returns an error if */ /* `offset' == 0! */ /* */ /* If *length == 0: */ /* Exits immediately; returning the length of the given */ /* table or of the font file, depending on the value of */ /* `tag'. */ /* */ /* If *length != 0: */ /* Loads the next `length' bytes of table or font, */ /* starting at offset `offset' (in table or font too). */ /* */ /* <Output> */ /* buffer :: The address of target buffer. */ /* */ /* <Return> */ /* TrueType error code. 0 means success. */ /* */ typedef TT_Error (*TT_Load_Any_Func)( TT_Face face, TT_ULong tag, TT_Long offset, void* buffer, TT_Long* length ); /*************************************************************************/ /* */ /* <FuncType> */ /* TT_Load_SBit_Image_Func */ /* */ /* <Description> */ /* Loads a given glyph sbit image from the font resource. This also */ /* returns its metrics. */ /* */ /* <Input> */ /* face :: The target face object. */ /* */ /* x_ppem :: The horizontal resolution in points per EM. */ /* */ /* y_ppem :: The vertical resolution in points per EM. */ /* */ /* glyph_index :: The current glyph index. */ /* */ /* stream :: The input stream. */ /* */ /* <Output> */ /* map :: The target pixmap. */ /* metrics :: A big sbit metrics structure for the glyph image. */ /* */ /* <Return> */ /* TrueType error code. 0 means success. Returns an error if no */ /* glyph sbit exists for the index. */ /* */ /* <Note> */ /* The `map.buffer' field is always freed before the glyph is loaded. */ /* */ typedef TT_Error (*TT_Load_SBit_Image_Func)( TT_Face face, TT_Int x_ppem, TT_Int y_ppem, TT_UInt glyph_index, FT_Stream stream, FT_Bitmap* map, TT_SBit_Metrics* metrics ); /*************************************************************************/ /* */ /* <FuncType> */ /* TT_Get_PS_Name_Func */ /* */ /* <Description> */ /* Gets the PostScript glyph name of a glyph. */ /* */ /* <Input> */ /* index :: The glyph index. */ /* */ /* PSname :: The address of a string pointer. Will be NULL in case */ /* of error, otherwise it is a pointer to the glyph name. */ /* */ /* You must not modify the returned string! */ /* */ /* <Output> */ /* TrueType error code. 0 means success. */ /* */ typedef TT_Error (*TT_Get_PS_Name_Func)( TT_Face face, TT_UInt index, TT_String** PSname ); /*************************************************************************/ /* */ /* <FuncType> */ /* TT_Load_Metrics */ /* */ /* <Description> */ /* Loads the horizontal or vertical header in a face object. */ /* */ /* <Input> */ /* face :: A handle to the target face object. */ /* stream :: The input stream. */ /* vertical :: A boolean flag. If set, load vertical metrics. */ /* */ /* <Return> */ /* TrueType error code. 0 means success. */ /* */ typedef TT_Error (*TT_Load_Metrics_Func)( TT_Face face, FT_Stream stream, TT_Bool vertical ); /*************************************************************************/ /* */ /* <FuncType> */ /* TT_CharMap_Load_Func */ /* */ /* <Description> */ /* Loads a given TrueType character map into memory. */ /* */ /* <Input> */ /* face :: A handle to the parent face object. */ /* stream :: A handle to the current stream object. */ /* */ /* <InOut> */ /* cmap :: A pointer to a cmap object. */ /* */ /* <Return> */ /* Error code. 0 means success. */ /* */ /* <Note> */ /* The function assumes that the stream is already in use (i.e., */ /* opened). In case of error, all partially allocated tables are */ /* released. */ /* */ typedef TT_Error (*TT_CharMap_Load_Func)( TT_Face face, TT_CMapTable* cmap, FT_Stream input ); /*************************************************************************/ /* */ /* <FuncType> */ /* TT_CharMap_Free_Func */ /* */ /* <Description> */ /* Destroys a character mapping table. */ /* */ /* <Input> */ /* face :: A handle to the parent face object. */ /* cmap :: A handle to a cmap object. */ /* */ /* <Return> */ /* Error code. 0 means success. */ /* */ typedef TT_Error (*TT_CharMap_Free_Func)( TT_Face face, TT_CMapTable* cmap ); /*************************************************************************/ /* */ /* <FuncType> */ /* TT_Load_Table */ /* */ /* <Description> */ /* Loads a given TrueType table. */ /* */ /* <Input> */ /* face :: A handle to the target face object. */ /* stream :: The input stream. */ /* */ /* <Return> */ /* TrueType error code. 0 means success. */ /* */ /* <Note> */ /* The function will use `face->goto_table' to seek the stream to */ /* the start of the table */ /* */ typedef TT_Error (*TT_Load_Table_Func)( TT_Face face, FT_Stream stream ); /*************************************************************************/ /* */ /* <FuncType> */ /* TT_Load_Table */ /* */ /* <Description> */ /* Loads a given TrueType table. */ /* */ /* <Input> */ /* face :: A handle to the target face object. */ /* stream :: The input stream. */ /* */ /* <Return> */ /* TrueType error code. 0 means success. */ /* */ /* <Note> */ /* The function will use `face->goto_table' to seek the stream to */ /* the start of the table */ /* */ typedef void (*TT_Free_Table_Func)( TT_Face face ); /*************************************************************************/ /* */ /* <Struct> */ /* SFNT_Interface */ /* */ /* <Description> */ /* this structure holds pointers to the functions used to load and */ /* free the basic tables that are required in a `sfnt' font file. */ /* */ /* <Fields> */ /* */ /* */ /* */ /* */ /* */ /* */ /* */ /* */ typedef struct SFNT_Interface_ { TT_Goto_Table_Func goto_table; TT_Load_Any_Func load_any; TT_Load_Directory_Func load_directory; TT_Load_Table_Func load_header; TT_Load_Metrics_Func load_metrics; TT_Load_Table_Func load_charmaps; TT_Load_Table_Func load_max_profile; TT_Load_Table_Func load_os2; TT_Load_Table_Func load_psnames; TT_Load_Table_Func load_names; TT_Free_Table_Func free_names; /* optional tables */ TT_Load_Table_Func load_hdmx; TT_Free_Table_Func free_hdmx; TT_Load_Table_Func load_kerning; TT_Load_Table_Func load_gasp; /* see `ttsbit.h' */ TT_Load_Table_Func load_sbits; TT_Load_SBit_Image_Func load_sbit_image; TT_Free_Table_Func free_sbits; /* see `ttpost.h' */ TT_Get_PS_Name_Func get_psname; TT_Free_Table_Func free_psnames; /* see `ttcmap.h' */ TT_CharMap_Load_Func load_charmap; TT_CharMap_Free_Func free_charmap; } SFNT_Interface; #endif /* SFNT_H */ /* END */