Chiebot-Mirror
/
harfbuzz
mirror of https://github.com/harfbuzz/harfbuzz.git
8
0
Fork 0
Code Issues Projects Releases Wiki Activity

[otlayout] More shuffling

Browse Source
pull/8/head
Behdad Esfahbod 11 years ago
parent 469524692b
commit 2e96d2c6ee
1 changed files with 130 additions and 122 deletions
Whitespace
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
Split View
Diff Options
Show Stats Download Patch File Download Diff File
  1. 252
      src/hb-ot-layout-private.hh

252
src/hb-ot-layout-private.hh
Unescape View File

@ -48,6 +48,131 @@
#define syllable() var1.u8[3] /* GSUB/GPOS shaping boundaries */
/*
* GDEF
*/
typedef enum {
/* One bit available here... = 0x01u */
/* The following three match LookupFlags::Ignore* numbers. */
HB_OT_LAYOUT_GLYPH_PROPS_BASE_GLYPH = 0x02u,
HB_OT_LAYOUT_GLYPH_PROPS_LIGATURE = 0x04u,
HB_OT_LAYOUT_GLYPH_PROPS_MARK = 0x08u
} hb_ot_layout_glyph_class_mask_t;
/*
* GSUB/GPOS
*/
HB_INTERNAL hb_bool_t
hb_ot_layout_lookup_would_substitute_fast (hb_face_t *face,
unsigned int lookup_index,
const hb_codepoint_t *glyphs,
unsigned int glyphs_length,
hb_bool_t zero_context);
/* Should be called before all the substitute_lookup's are done. */
HB_INTERNAL void
hb_ot_layout_substitute_start (hb_font_t *font,
hb_buffer_t *buffer);
struct hb_ot_layout_lookup_accelerator_t;
namespace OT {
struct hb_apply_context_t;
struct SubstLookup;
}
HB_INTERNAL void
hb_ot_layout_substitute_lookup (OT::hb_apply_context_t *c,
const OT::SubstLookup &lookup,
const hb_ot_layout_lookup_accelerator_t &accel);
/* Should be called after all the substitute_lookup's are done */
HB_INTERNAL void
hb_ot_layout_substitute_finish (hb_font_t *font,
hb_buffer_t *buffer);
/* Should be called before all the position_lookup's are done. Resets positions to zero. */
HB_INTERNAL void
hb_ot_layout_position_start (hb_font_t *font,
hb_buffer_t *buffer);
/* Should be called after all the position_lookup's are done */
HB_INTERNAL void
hb_ot_layout_position_finish (hb_font_t *font,
hb_buffer_t *buffer);
/*
* hb_ot_layout_t
*/
namespace OT {
struct GDEF;
struct GSUB;
struct GPOS;
}
struct hb_ot_layout_lookup_accelerator_t
{
template <typename TLookup>
inline void init (const TLookup &lookup)
{
digest.init ();
lookup.add_coverage (&digest);
}
template <typename TLookup>
inline void fini (const TLookup &lookup)
{
}
hb_set_digest_t digest;
};
struct hb_ot_layout_t
{
hb_blob_t *gdef_blob;
hb_blob_t *gsub_blob;
hb_blob_t *gpos_blob;
const struct OT::GDEF *gdef;
const struct OT::GSUB *gsub;
const struct OT::GPOS *gpos;
unsigned int gsub_lookup_count;
unsigned int gpos_lookup_count;
hb_ot_layout_lookup_accelerator_t *gsub_accels;
hb_ot_layout_lookup_accelerator_t *gpos_accels;
};
HB_INTERNAL hb_ot_layout_t *
_hb_ot_layout_create (hb_face_t *face);
HB_INTERNAL void
_hb_ot_layout_destroy (hb_ot_layout_t *layout);
#define hb_ot_layout_from_face(face) ((hb_ot_layout_t *) face->shaper_data.ot)
/*
* Buffer var routines.
*/
/* unicode_props */
enum {
MASK0_ZWJ = 0x20u,
MASK0_ZWNJ = 0x40u,
@ -113,27 +238,7 @@ _hb_glyph_info_flip_joiners (hb_glyph_info_t *info)
info->unicode_props0() ^= MASK0_ZWNJ | MASK0_ZWJ;
}
/*
* GDEF
*/
typedef enum {
/* One bit available here... = 0x01u */
/* The following three match LookupFlags::Ignore* numbers. */
HB_OT_LAYOUT_GLYPH_PROPS_BASE_GLYPH = 0x02u,
HB_OT_LAYOUT_GLYPH_PROPS_LIGATURE = 0x04u,
HB_OT_LAYOUT_GLYPH_PROPS_MARK = 0x08u
} hb_ot_layout_glyph_class_mask_t;
/*
* GSUB/GPOS
*/
/* lig_id / lig_comp
/* lig_props: aka lig_id / lig_comp
*
* When a ligature is formed:
*
@ -143,7 +248,9 @@ typedef enum {
* - The marks get lig_comp > 0, reflecting which component of the ligature
* they were applied to.
* - This is used in GPOS to attach marks to the right component of a ligature
* in MarkLigPos.
* in MarkLigPos,
* - Note that when marks are ligated together, much of the above is skipped
* and the current lig_id reused.
*
* When a multiple-substitution is done:
*
@ -153,7 +260,7 @@ typedef enum {
* multiple substitution in MarkBasePos.
*
* The numbers are also used in GPOS to do mark-to-mark positioning only
* to marks that belong to the same component of a ligature in MarkMarPos.
* to marks that belong to the same component of the same ligature.
*/
#define IS_LIG_BASE 0x10
static inline void
@ -207,104 +314,5 @@ static inline uint8_t allocate_lig_id (hb_buffer_t *buffer) {
}
HB_INTERNAL hb_bool_t
hb_ot_layout_lookup_would_substitute_fast (hb_face_t *face,
unsigned int lookup_index,
const hb_codepoint_t *glyphs,
unsigned int glyphs_length,
hb_bool_t zero_context);
/* Should be called before all the substitute_lookup's are done. */
HB_INTERNAL void
hb_ot_layout_substitute_start (hb_font_t *font,
hb_buffer_t *buffer);
struct hb_ot_layout_lookup_accelerator_t;
namespace OT {
struct hb_apply_context_t;
struct SubstLookup;
}
HB_INTERNAL void
hb_ot_layout_substitute_lookup (OT::hb_apply_context_t *c,
const OT::SubstLookup &lookup,
const hb_ot_layout_lookup_accelerator_t &accel);
/* Should be called after all the substitute_lookup's are done */
HB_INTERNAL void
hb_ot_layout_substitute_finish (hb_font_t *font,
hb_buffer_t *buffer);
/* Should be called before all the position_lookup's are done. Resets positions to zero. */
HB_INTERNAL void
hb_ot_layout_position_start (hb_font_t *font,
hb_buffer_t *buffer);
/* Should be called after all the position_lookup's are done */
HB_INTERNAL void
hb_ot_layout_position_finish (hb_font_t *font,
hb_buffer_t *buffer);
/*
* hb_ot_layout_t
*/
namespace OT {
struct GDEF;
struct GSUB;
struct GPOS;
}
struct hb_ot_layout_lookup_accelerator_t
{
template <typename TLookup>
inline void init (const TLookup &lookup)
{
digest.init ();
lookup.add_coverage (&digest);
}
template <typename TLookup>
inline void fini (const TLookup &lookup)
{
}
hb_set_digest_t digest;
};
struct hb_ot_layout_t
{
hb_blob_t *gdef_blob;
hb_blob_t *gsub_blob;
hb_blob_t *gpos_blob;
const struct OT::GDEF *gdef;
const struct OT::GSUB *gsub;
const struct OT::GPOS *gpos;
unsigned int gsub_lookup_count;
unsigned int gpos_lookup_count;
hb_ot_layout_lookup_accelerator_t *gsub_accels;
hb_ot_layout_lookup_accelerator_t *gpos_accels;
};
HB_INTERNAL hb_ot_layout_t *
_hb_ot_layout_create (hb_face_t *face);
HB_INTERNAL void
_hb_ot_layout_destroy (hb_ot_layout_t *layout);
#define hb_ot_layout_from_face(face) ((hb_ot_layout_t *) face->shaper_data.ot)
#endif /* HB_OT_LAYOUT_PRIVATE_HH */

Write Preview
Loading…
Cancel
Save