tttables.h
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H
675 行
FT_Char TypeFace[16];
FT_Char CharacterComplement[8];
FT_Char FileName[6];
FT_Char StrokeWeight;
FT_Char WidthType;
FT_Byte SerifStyle;
FT_Byte Reserved;
} TT_PCLT;
/*************************************************************************/
/* */
/* <Struct> */
/* TT_MaxProfile */
/* */
/* <Description> */
/* The maximum profile is a table containing many max values which */
/* can be used to pre-allocate arrays. This ensures that no memory */
/* allocation occurs during a glyph load. */
/* */
/* <Fields> */
/* version :: The version number. */
/* */
/* numGlyphs :: The number of glyphs in this TrueType */
/* font. */
/* */
/* maxPoints :: The maximum number of points in a */
/* non-composite TrueType glyph. See also */
/* the structure element */
/* `maxCompositePoints'. */
/* */
/* maxContours :: The maximum number of contours in a */
/* non-composite TrueType glyph. See also */
/* the structure element */
/* `maxCompositeContours'. */
/* */
/* maxCompositePoints :: The maximum number of points in a */
/* composite TrueType glyph. See also the */
/* structure element `maxPoints'. */
/* */
/* maxCompositeContours :: The maximum number of contours in a */
/* composite TrueType glyph. See also the */
/* structure element `maxContours'. */
/* */
/* maxZones :: The maximum number of zones used for */
/* glyph hinting. */
/* */
/* maxTwilightPoints :: The maximum number of points in the */
/* twilight zone used for glyph hinting. */
/* */
/* maxStorage :: The maximum number of elements in the */
/* storage area used for glyph hinting. */
/* */
/* maxFunctionDefs :: The maximum number of function */
/* definitions in the TrueType bytecode for */
/* this font. */
/* */
/* maxInstructionDefs :: The maximum number of instruction */
/* definitions in the TrueType bytecode for */
/* this font. */
/* */
/* maxStackElements :: The maximum number of stack elements used */
/* during bytecode interpretation. */
/* */
/* maxSizeOfInstructions :: The maximum number of TrueType opcodes */
/* used for glyph hinting. */
/* */
/* maxComponentElements :: An obscure value related to composite */
/* glyphs definitions. */
/* */
/* maxComponentDepth :: An obscure value related to composite */
/* glyphs definitions. Probably the maximum */
/* number of simple glyphs in a composite. */
/* */
/* <Note> */
/* This structure is only used during font loading. */
/* */
typedef struct TT_MaxProfile_
{
FT_Fixed version;
FT_UShort numGlyphs;
FT_UShort maxPoints;
FT_UShort maxContours;
FT_UShort maxCompositePoints;
FT_UShort maxCompositeContours;
FT_UShort maxZones;
FT_UShort maxTwilightPoints;
FT_UShort maxStorage;
FT_UShort maxFunctionDefs;
FT_UShort maxInstructionDefs;
FT_UShort maxStackElements;
FT_UShort maxSizeOfInstructions;
FT_UShort maxComponentElements;
FT_UShort maxComponentDepth;
} TT_MaxProfile;
/*************************************************************************/
/* */
/* <Enum> */
/* FT_Sfnt_Tag */
/* */
/* <Description> */
/* An enumeration used to specify the index of an SFNT table. */
/* Used in the @FT_Get_Sfnt_Table API function. */
/* */
typedef enum
{
ft_sfnt_head = 0,
ft_sfnt_maxp = 1,
ft_sfnt_os2 = 2,
ft_sfnt_hhea = 3,
ft_sfnt_vhea = 4,
ft_sfnt_post = 5,
ft_sfnt_pclt = 6,
sfnt_max /* internal end mark */
} FT_Sfnt_Tag;
/* */
/*************************************************************************/
/* */
/* <Function> */
/* FT_Get_Sfnt_Table */
/* */
/* <Description> */
/* Returns a pointer to a given SFNT table within a face. */
/* */
/* <Input> */
/* face :: A handle to the source. */
/* */
/* tag :: The index of the SFNT table. */
/* */
/* <Return> */
/* A type-less pointer to the table. This will be 0 in case of */
/* error, or if the corresponding table was not found *OR* loaded */
/* from the file. */
/* */
/* <Note> */
/* The table is owned by the face object and disappears with it. */
/* */
/* This function is only useful to access SFNT tables that are loaded */
/* by the sfnt/truetype/opentype drivers. See @FT_Sfnt_Tag for a */
/* list. */
/* */
FT_EXPORT( void* )
FT_Get_Sfnt_Table( FT_Face face,
FT_Sfnt_Tag tag );
/**************************************************************************
*
* <Function>
* FT_Load_Sfnt_Table
*
* <Description>
* Loads any font table into client memory.
*
* <Input>
* face :: A handle to the source face.
*
* tag :: The 4-byte tag of the table to load. Use the value 0 if
* you want to access the whole font file. Otherwise, you can
* use one of the definitions found in the @FT_TRUETYPE_TAGS_H
* file, or forge a new one with @FT_MAKE_TAG.
*
* offset :: The starting offset in the table (or file if tag == 0).
*
* <Output>
* buffer :: The target buffer address. The client must ensure that
* the memory array is big enough to hold the data.
*
* <InOut>
* length :: If the `length' parameter is NULL, then try to load the whole
* table. Return an error code if it fails.
*
* Else, if `*length' is 0, exit immediately while returning
* the table's (or file) full size in it.
*
* Else the number of bytes to read from the table or file,
* from the starting offset.
*
* <Return>
* FreeType error code. 0 means success.
*
* <Note>
* If you need to determine the table's length you should first call this
* function with `*length' set to 0, as in the following example:
*
* {
* FT_ULong length = 0;
*
*
* error = FT_Load_Sfnt_Table( face, tag, 0, NULL, &length );
* if ( error ) { ... table does not exist ... }
*
* buffer = malloc( length );
* if ( buffer == NULL ) { ... not enough memory ... }
*
* error = FT_Load_Sfnt_Table( face,tag, 0, buffer, &length );
* if ( error ) { ... could not load table ... }
* }
*/
FT_EXPORT( FT_Error )
FT_Load_Sfnt_Table( FT_Face face,
FT_ULong tag,
FT_Long offset,
FT_Byte* buffer,
FT_ULong* length );
/* */
FT_END_HEADER
#endif /* __TTTABLES_H__ */
/* END */
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