?? ttobjs.h
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/***************************************************************************/
/* */
/* ttobjs.h */
/* */
/* Objects manager (specification). */
/* */
/* Copyright 1996-2001, 2002, 2003, 2004, 2005, 2006 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 __TTOBJS_H__
#define __TTOBJS_H__
#include <ft2build.h>
#include FT_INTERNAL_OBJECTS_H
#include FT_INTERNAL_TRUETYPE_TYPES_H
FT_BEGIN_HEADER
/*************************************************************************/
/* */
/* <Type> */
/* TT_Driver */
/* */
/* <Description> */
/* A handle to a TrueType driver object. */
/* */
typedef struct TT_DriverRec_* TT_Driver;
/*************************************************************************/
/* */
/* <Type> */
/* TT_Instance */
/* */
/* <Description> */
/* A handle to a TrueType size object. */
/* */
typedef struct TT_SizeRec_* TT_Size;
/*************************************************************************/
/* */
/* <Type> */
/* TT_GlyphSlot */
/* */
/* <Description> */
/* A handle to a TrueType glyph slot object. */
/* */
/* <Note> */
/* This is a direct typedef of FT_GlyphSlot, as there is nothing */
/* specific about the TrueType glyph slot. */
/* */
typedef FT_GlyphSlot TT_GlyphSlot;
/*************************************************************************/
/* */
/* <Struct> */
/* TT_GraphicsState */
/* */
/* <Description> */
/* The TrueType graphics state used during bytecode interpretation. */
/* */
typedef struct TT_GraphicsState_
{
FT_UShort rp0;
FT_UShort rp1;
FT_UShort rp2;
FT_UnitVector dualVector;
FT_UnitVector projVector;
FT_UnitVector freeVector;
#ifdef TT_CONFIG_OPTION_UNPATENTED_HINTING
FT_Bool both_x_axis;
#endif
FT_Long loop;
FT_F26Dot6 minimum_distance;
FT_Int round_state;
FT_Bool auto_flip;
FT_F26Dot6 control_value_cutin;
FT_F26Dot6 single_width_cutin;
FT_F26Dot6 single_width_value;
FT_Short delta_base;
FT_Short delta_shift;
FT_Byte instruct_control;
FT_Bool scan_control;
FT_Int scan_type;
FT_UShort gep0;
FT_UShort gep1;
FT_UShort gep2;
} TT_GraphicsState;
#ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER
FT_LOCAL( void )
tt_glyphzone_done( TT_GlyphZone zone );
FT_LOCAL( FT_Error )
tt_glyphzone_new( FT_Memory memory,
FT_UShort maxPoints,
FT_Short maxContours,
TT_GlyphZone zone );
#endif /* TT_CONFIG_OPTION_BYTECODE_INTERPRETER */
/*************************************************************************/
/* */
/* EXECUTION SUBTABLES */
/* */
/* These sub-tables relate to instruction execution. */
/* */
/*************************************************************************/
#define TT_MAX_CODE_RANGES 3
/*************************************************************************/
/* */
/* There can only be 3 active code ranges at once: */
/* - the Font Program */
/* - the CVT Program */
/* - a glyph's instructions set */
/* */
typedef enum TT_CodeRange_Tag_
{
tt_coderange_none = 0,
tt_coderange_font,
tt_coderange_cvt,
tt_coderange_glyph
} TT_CodeRange_Tag;
typedef struct TT_CodeRange_
{
FT_Byte* base;
FT_ULong size;
} TT_CodeRange;
typedef TT_CodeRange TT_CodeRangeTable[TT_MAX_CODE_RANGES];
/*************************************************************************/
/* */
/* Defines a function/instruction definition record. */
/* */
typedef struct TT_DefRecord_
{
FT_Int range; /* in which code range is it located? */
FT_Long start; /* where does it start? */
FT_UInt opc; /* function #, or instruction code */
FT_Bool active; /* is it active? */
} TT_DefRecord, *TT_DefArray;
/*************************************************************************/
/* */
/* Subglyph transformation record. */
/* */
typedef struct TT_Transform_
{
FT_Fixed xx, xy; /* transformation matrix coefficients */
FT_Fixed yx, yy;
FT_F26Dot6 ox, oy; /* offsets */
} TT_Transform;
/*************************************************************************/
/* */
/* Subglyph loading record. Used to load composite components. */
/* */
typedef struct TT_SubglyphRec_
{
FT_Long index; /* subglyph index; initialized with -1 */
FT_Bool is_scaled; /* is the subglyph scaled? */
FT_Bool is_hinted; /* should it be hinted? */
FT_Bool preserve_pps; /* preserve phantom points? */
FT_Long file_offset;
FT_BBox bbox;
FT_Pos left_bearing;
FT_Pos advance;
TT_GlyphZoneRec zone;
FT_Long arg1; /* first argument */
FT_Long arg2; /* second argument */
FT_UShort element_flag; /* current load element flag */
TT_Transform transform; /* transformation matrix */
FT_Vector pp1, pp2; /* phantom points (horizontal) */
FT_Vector pp3, pp4; /* phantom points (vertical) */
} TT_SubGlyphRec, *TT_SubGlyph_Stack;
/*************************************************************************/
/* */
/* A note regarding non-squared pixels: */
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