ref: dc736a6ac0d6abe15da0139a00e205e84f82deec
dir: /src/autofit/aflatin.h/
#ifndef __AFLATIN_H__
#define __AFLATIN_H__
#include "afhints.h"
FT_BEGIN_HEADER
/* the latin-specific script class */
FT_CALLBACK_TABLE const AF_ScriptClassRec
af_latin_script_class;
/*************************************************************************/
/*************************************************************************/
/***** *****/
/***** L A T I N G L O B A L M E T R I C S *****/
/***** *****/
/*************************************************************************/
/*************************************************************************/
/*
* The following declarations could be embedded in the file `aflatin.c';
* they have been made semi-public to allow alternate script hinters to
* re-use some of them.
*/
/* Latin (global) metrics management */
enum
{
AF_LATIN_BLUE_CAPITAL_TOP,
AF_LATIN_BLUE_CAPITAL_BOTTOM,
AF_LATIN_BLUE_SMALL_F_TOP,
AF_LATIN_BLUE_SMALL_TOP,
AF_LATIN_BLUE_SMALL_BOTTOM,
AF_LATIN_BLUE_SMALL_MINOR,
AF_LATIN_BLUE_MAX
};
#define AF_LATIN_IS_TOP_BLUE( b ) ( (b) == AF_LATIN_BLUE_CAPITAL_TOP || \
(b) == AF_LATIN_BLUE_SMALL_F_TOP || \
(b) == AF_LATIN_BLUE_SMALL_TOP )
#define AF_LATIN_MAX_WIDTHS 16
#define AF_LATIN_MAX_BLUES AF_LATIN_BLUE_MAX
enum
{
AF_LATIN_BLUE_ACTIVE = ( 1 << 0 ),
AF_LATIN_BLUE_TOP = ( 1 << 1 ),
AF_LATIN_BLUE_ADJUSTMENT = ( 1 << 2 ), /* used for scale adjustment */
/* optimization */
AF_LATIN_BLUE_FLAG_MAX
};
typedef struct AF_LatinBlueRec_
{
AF_WidthRec ref;
AF_WidthRec shoot;
FT_UInt flags;
} AF_LatinBlueRec, *AF_LatinBlue;
typedef struct AF_LatinAxisRec_
{
FT_Fixed scale;
FT_Pos delta;
FT_UInt width_count;
AF_WidthRec widths[AF_LATIN_MAX_WIDTHS];
FT_Pos edge_distance_threshold;
/* ignored for horizontal metrics */
FT_Bool control_overshoot;
FT_UInt blue_count;
AF_LatinBlueRec blues[AF_LATIN_BLUE_MAX];
FT_Fixed org_scale;
FT_Pos org_delta;
} AF_LatinAxisRec, *AF_LatinAxis;
typedef struct AF_LatinMetricsRec_
{
AF_ScriptMetricsRec root;
FT_UInt units_per_em;
AF_LatinAxisRec axis[AF_DIMENSION_MAX];
} AF_LatinMetricsRec, *AF_LatinMetrics;
FT_LOCAL( FT_Error )
af_latin_metrics_init( AF_LatinMetrics metrics,
FT_Face face );
FT_LOCAL( void )
af_latin_metrics_scale( AF_LatinMetrics metrics,
AF_Scaler scaler );
/*************************************************************************/
/*************************************************************************/
/***** *****/
/***** L A T I N G L Y P H A N A L Y S I S *****/
/***** *****/
/*************************************************************************/
/*************************************************************************/
enum
{
AF_LATIN_HINTS_HORZ_SNAP = ( 1 << 0 ), /* enable stem width snapping */
AF_LATIN_HINTS_VERT_SNAP = ( 1 << 1 ), /* enable stem height snapping */
AF_LATIN_HINTS_STEM_ADJUST = ( 1 << 2 ), /* enable stem width/height
adjustment */
AF_LATIN_HINTS_MONO = ( 1 << 3 ) /* indicate monochrome
rendering */
};
#define AF_LATIN_HINTS_DO_HORZ_SNAP( h ) \
AF_HINTS_TEST_OTHER( h, AF_LATIN_HINTS_HORZ_SNAP )
#define AF_LATIN_HINTS_DO_VERT_SNAP( h ) \
AF_HINTS_TEST_OTHER( h, AF_LATIN_HINTS_VERT_SNAP )
#define AF_LATIN_HINTS_DO_STEM_ADJUST( h ) \
AF_HINTS_TEST_OTHER( h, AF_LATIN_HINTS_STEM_ADJUST )
#define AF_LATIN_HINTS_DO_MONO( h ) \
AF_HINTS_TEST_OTHER( h, AF_LATIN_HINTS_MONO )
/*
* This shouldn't normally be exported. However, other scripts might
* like to use this function as-is.
*/
FT_LOCAL( FT_Error )
af_latin_hints_compute_segments( AF_GlyphHints hints,
AF_Dimension dim );
/*
* This shouldn't normally be exported. However, other scripts might
* want to use this function as-is.
*/
FT_LOCAL( void )
af_latin_hints_link_segments( AF_GlyphHints hints,
AF_Dimension dim );
/*
* This shouldn't normally be exported. However, other scripts might
* want to use this function as-is.
*/
FT_LOCAL( FT_Error )
af_latin_hints_compute_edges( AF_GlyphHints hints,
AF_Dimension dim );
FT_LOCAL( FT_Error )
af_latin_hints_detect_features( AF_GlyphHints hints,
AF_Dimension dim );
/* */
FT_END_HEADER
#endif /* __AFLATIN_H__ */
/* END */