hb_tag_from_string ()

hb_tag_t
hb_tag_from_string (const char *str,
                    int len);

Since: 0.9.2

hb_tag_to_string ()

void
hb_tag_to_string (hb_tag_t tag,
                  char *buf);

Since: 0.9.5

hb_direction_from_string ()

hb_direction_t
hb_direction_from_string (const char *str,
                          int len);

Since: 0.9.2

hb_direction_to_string ()

const char *
hb_direction_to_string (hb_direction_t direction);

Since: 0.9.2

hb_script_from_iso15924_tag ()

hb_script_t
hb_script_from_iso15924_tag (hb_tag_t tag);

Converts an ISO 15924 script tag to a corresponding hb_script_t.

Since: 0.9.2

hb_script_from_string ()

hb_script_t
hb_script_from_string (const char *str,
                       int len);

Converts a string str representing an ISO 15924 script tag to a corresponding hb_script_t. Shorthand for hb_tag_from_string() then hb_script_from_iso15924_tag().

Since: 0.9.2

hb_script_to_iso15924_tag ()

hb_tag_t
hb_script_to_iso15924_tag (hb_script_t script);

See hb_script_from_iso15924_tag().

Since: 0.9.2

hb_script_get_horizontal_direction ()

hb_direction_t
hb_script_get_horizontal_direction (hb_script_t script);

Since: 0.9.2

hb_language_from_string ()

hb_language_t
hb_language_from_string (const char *str,
                         int len);

Converts str representing a BCP 47 language tag to the corresponding hb_language_t.

Since: 0.9.2

hb_language_to_string ()

const char *
hb_language_to_string (hb_language_t language);

See hb_language_from_string().

Since: 0.9.2

hb_language_get_default ()

hb_language_t
hb_language_get_default (void);

Get default language from current locale.

Note that the first time this function is called, it calls "setlocale (LC_CTYPE, nullptr)" to fetch current locale. The underlying setlocale function is, in many implementations, NOT threadsafe. To avoid problems, call this function once before multiple threads can call it. This function is only used from hb_buffer_guess_segment_properties() by HarfBuzz itself.

Since: 0.9.2

hb_feature_from_string ()

hb_bool_t
hb_feature_from_string (const char *str,
                        int len,
                        hb_feature_t *feature);

Parses a string into a hb_feature_t.

The format for specifying feature strings follows. All valid CSS font-feature-settings values other than 'normal' and the global values are also accepted, though not documented below. CSS string escapes are not supported.

The range indices refer to the positions between Unicode characters. The position before the first character is always 0.

The format is Python-esque. Here is how it all works:

Since: 0.9.5

hb_feature_to_string ()

void
hb_feature_to_string (hb_feature_t *feature,
                      char *buf,
                      unsigned int size);

Converts a hb_feature_t into a NULL-terminated string in the format understood by hb_feature_from_string(). The client in responsible for allocating big enough size for buf , 128 bytes is more than enough.

Since: 0.9.5

hb_variation_from_string ()

hb_bool_t
hb_variation_from_string (const char *str,
                          int len,
                          hb_variation_t *variation);

Since: 1.4.2

hb_variation_to_string ()

void
hb_variation_to_string (hb_variation_t *variation,
                        char *buf,
                        unsigned int size);

Since: 1.4.2

hb_destroy_func_t ()

void
(*hb_destroy_func_t) (void *user_data);

HB_TAG()

#define HB_TAG(c1,c2,c3,c4) ((hb_tag_t)((((uint32_t)(c1)&0xFF)<<24)|(((uint32_t)(c2)&0xFF)<<16)|(((uint32_t)(c3)&0xFF)<<8)|((uint32_t)(c4)&0xFF)))

HB_UNTAG()

#define HB_UNTAG(tag)   (uint8_t)(((tag)>>24)&0xFF), (uint8_t)(((tag)>>16)&0xFF), (uint8_t)(((tag)>>8)&0xFF), (uint8_t)((tag)&0xFF)

HB_DIRECTION_REVERSE()

#define HB_DIRECTION_REVERSE(dir) ((hb_direction_t) (((unsigned int) (dir)) ^ 1))

HB_DIRECTION_IS_BACKWARD()

#define HB_DIRECTION_IS_BACKWARD(dir) ((((unsigned int) (dir)) & ~2U) == 5)

HB_DIRECTION_IS_FORWARD()

#define HB_DIRECTION_IS_FORWARD(dir) ((((unsigned int) (dir)) & ~2U) == 4)

HB_DIRECTION_IS_HORIZONTAL()

#define HB_DIRECTION_IS_HORIZONTAL(dir) ((((unsigned int) (dir)) & ~1U) == 4)

HB_DIRECTION_IS_VALID()

#define HB_DIRECTION_IS_VALID(dir) ((((unsigned int) (dir)) & ~3U) == 4)

HB_DIRECTION_IS_VERTICAL()

#define HB_DIRECTION_IS_VERTICAL(dir) ((((unsigned int) (dir)) & ~1U) == 6)

hb_bool_t

typedef int hb_bool_t;

hb_codepoint_t

typedef uint32_t hb_codepoint_t;

enum hb_direction_t

hb_language_t

typedef const struct hb_language_impl_t *hb_language_t;

hb_feature_t

typedef struct {
  hb_tag_t      tag;
  uint32_t      value;
  unsigned int  start;
  unsigned int  end;
} hb_feature_t;

hb_variation_t

typedef struct {
  hb_tag_t tag;
  float    value;
} hb_variation_t;

Since: 1.4.2

hb_mask_t

typedef uint32_t hb_mask_t;

hb_position_t

typedef int32_t hb_position_t;

hb_tag_t

typedef uint32_t hb_tag_t;

enum hb_script_t

hb_user_data_key_t

typedef struct {
} hb_user_data_key_t;

hb_var_int_t

HB_TAG_NONE

#define HB_TAG_NONE HB_TAG(0,0,0,0)

HB_TAG_MAX

#define HB_TAG_MAX HB_TAG(0xff,0xff,0xff,0xff)

HB_TAG_MAX_SIGNED

#define HB_TAG_MAX_SIGNED HB_TAG(0x7f,0xff,0xff,0xff)

HB_LANGUAGE_INVALID

#define HB_LANGUAGE_INVALID ((hb_language_t) 0)

HB_FEATURE_GLOBAL_END

#define HB_FEATURE_GLOBAL_END ((unsigned int) -1)

Since: 2.0.0

HB_FEATURE_GLOBAL_START

#define HB_FEATURE_GLOBAL_START 0

Since: 2.0.0