ref: a4aadf5401284c1beb2b0904c1d977c7e3f57d9c
dir: /src/autofit/aflatin.h/
#ifndef __AFLATIN_H__
#define __AFLATIN_H__
#include "afhints.h"
FT_BEGIN_HEADER
/*
* the latin-specific script class
*
*/
FT_LOCAL( 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've 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( void )
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( void )
af_latin_hints_compute_edges( AF_GlyphHints hints,
AF_Dimension dim );
FT_LOCAL( void )
af_latin_hints_detect_features( AF_GlyphHints hints,
AF_Dimension dim );
/* */
FT_END_HEADER
#endif /* __AFLATIN_H__ */