131 lines
3.6 KiB
C
131 lines
3.6 KiB
C
/***
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**
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** Module: T1Parser
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**
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** Description:
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** This is a module of the T1 to TT font converter. The module
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** will extract information from a T1 font file, by parsing
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** the data/commands found in PFB, PFM and AFM files.
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**
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** Author: Michael Jansson
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**
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** Created: 5/26/93
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**
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***/
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#ifndef _ARGS
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# define IN const
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# define OUT
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# define INOUT
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# define _ARGS(arg) arg
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#endif
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struct T1Arg;
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struct T1Info;
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struct T1Glyph;
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struct T1Handle;
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struct T1Metrics;
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struct Composite;
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struct GlyphFilter;
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/***
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** Function: InitT1Input
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**
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** Description:
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** Allocate and initiate a handle for a T1 font file, including
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** extracting data from the font prolog that is needed to
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** read the glyphs, such as /FontMatrix, /Subrs and /lenIV.
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***/
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errcode InitT1Input _ARGS((IN struct T1Arg *,
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OUT struct T1Handle **,
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OUT struct T1Metrics **,
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IN short (*cb)(IN char *,
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IN char *,
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IN char *)));
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/***
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** Function: CleanUpT1
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**
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** Description:
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** Free the resources allocated for the T1 handle.
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***/
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errcode CleanUpT1 _ARGS((INOUT struct T1Handle *));
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/***
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** Function: ReadOtherMetrics
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**
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** Description:
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** Return font level information about the T1 font (mostly
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** metrics).
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***/
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errcode ReadOtherMetrics _ARGS((INOUT struct T1Metrics *,
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IN char *metrics));
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/***
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** Function: GetT1Glyph
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**
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** Description:
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** The current file position of the T1 font file must be
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** at the begining of an entry in the /CharStrings dictionary.
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** The function will decode the font commands, parse them, and
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** finally build a representation of the glyph.
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***/
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errcode GetT1Glyph _ARGS((INOUT struct T1Handle *,
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OUT struct T1Glyph *,
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IN struct GlyphFilter *));
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/***
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** Function: FreeT1Glyph
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**
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** Description:
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** This function frees the memory used to represent
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** a glyph that has been translated.
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***/
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void FreeT1Glyph _ARGS((INOUT struct T1Glyph *));
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/***
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** Function: GetT1Composite
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**
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** Description:
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** This function unlinks the first composite glyph
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** from the list of recorded composite glyphs, which
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** is returned to the caller.
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***/
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struct Composite *GetT1Composite _ARGS((INOUT struct T1Handle *));
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/***
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** Function: GetT1AccentGlyph
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**
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** Description:
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** This function parses the charstring code associated to the
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** accent character of a composite character, if that glyph
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** is not already converted.
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***/
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errcode GetT1AccentGlyph _ARGS((INOUT struct T1Handle *,
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IN struct Composite *,
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OUT struct T1Glyph *));
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/***
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** Function: GetT1BaseGlyph
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**
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** Description:
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** This function parses the charstring code associated to the
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** base character of a composite character, if that glyph
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** is not already converted.
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***/
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errcode GetT1BaseGlyph _ARGS((INOUT struct T1Handle *,
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IN struct Composite *,
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OUT struct T1Glyph *));
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/***
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** Function: FlushWorkspace
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**
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** Description:
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** Free the resources allocated for the T1 handle.
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***/
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void FlushWorkspace _ARGS((INOUT struct T1Handle *t1));
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