hb_buffer_add ()

void
hb_buffer_add (hb_buffer_t *buffer,
               hb_codepoint_t codepoint,
               unsigned int cluster);

Since 1.0

hb_buffer_add_utf16 ()

void
hb_buffer_add_utf16 (hb_buffer_t *buffer,
                     const uint16_t *text,
                     int text_length,
                     unsigned int item_offset,
                     int item_length);

Since 1.0

hb_buffer_add_utf32 ()

void
hb_buffer_add_utf32 (hb_buffer_t *buffer,
                     const uint32_t *text,
                     int text_length,
                     unsigned int item_offset,
                     int item_length);

Since 1.0

hb_buffer_add_utf8 ()

void
hb_buffer_add_utf8 (hb_buffer_t *buffer,
                    const char *text,
                    int text_length,
                    unsigned int item_offset,
                    int item_length);

Since 1.0

hb_buffer_add_codepoints ()

void
hb_buffer_add_codepoints (hb_buffer_t *buffer,
                          const hb_codepoint_t *text,
                          int text_length,
                          unsigned int item_offset,
                          int item_length);

Since 1.0

hb_buffer_allocation_successful ()

hb_bool_t
hb_buffer_allocation_successful (hb_buffer_t *buffer);

Since 1.0

hb_buffer_clear_contents ()

void
hb_buffer_clear_contents (hb_buffer_t *buffer);

Since 1.0

hb_buffer_create ()

hb_buffer_t *
hb_buffer_create (void);

hb_buffer_deserialize_glyphs ()

hb_bool_t
hb_buffer_deserialize_glyphs (hb_buffer_t *buffer,
                              const char *buf,
                              int buf_len,
                              const char **end_ptr,
                              hb_font_t *font,
                              hb_buffer_serialize_format_t format);

Since 1.0

hb_buffer_destroy ()

void
hb_buffer_destroy (hb_buffer_t *buffer);

Since 1.0

hb_buffer_get_content_type ()

hb_buffer_content_type_t
hb_buffer_get_content_type (hb_buffer_t *buffer);

Since 1.0

hb_buffer_get_direction ()

hb_direction_t
hb_buffer_get_direction (hb_buffer_t *buffer);

Since 1.0

hb_buffer_get_empty ()

hb_buffer_t *
hb_buffer_get_empty (void);

Since 1.0

hb_buffer_get_flags ()

hb_buffer_flags_t
hb_buffer_get_flags (hb_buffer_t *buffer);

Since 1.0

hb_buffer_get_glyph_infos ()

hb_glyph_info_t *
hb_buffer_get_glyph_infos (hb_buffer_t *buffer,
                           unsigned int *length);

Returns buffer glyph information array. Returned pointer is valid as long as buffer contents are not modified.

Since 1.0

hb_buffer_get_glyph_positions ()

hb_glyph_position_t *
hb_buffer_get_glyph_positions (hb_buffer_t *buffer,
                               unsigned int *length);

Returns buffer glyph position array. Returned pointer is valid as long as buffer contents are not modified.

Since 1.0

hb_buffer_get_language ()

hb_language_t
hb_buffer_get_language (hb_buffer_t *buffer);

Since 1.0

hb_buffer_get_length ()

unsigned int
hb_buffer_get_length (hb_buffer_t *buffer);

Returns the number of items in the buffer.

Since 1.0

hb_buffer_get_replacement_codepoint ()

hb_codepoint_t
hb_buffer_get_replacement_codepoint (hb_buffer_t *buffer);

Since 1.0

hb_buffer_get_script ()

hb_script_t
hb_buffer_get_script (hb_buffer_t *buffer);

Since 1.0

hb_buffer_get_segment_properties ()

void
hb_buffer_get_segment_properties (hb_buffer_t *buffer,
                                  hb_segment_properties_t *props);

Since 1.0

hb_buffer_get_unicode_funcs ()

hb_unicode_funcs_t *
hb_buffer_get_unicode_funcs (hb_buffer_t *buffer);

Since 1.0

hb_buffer_get_user_data ()

void *
hb_buffer_get_user_data (hb_buffer_t *buffer,
                         hb_user_data_key_t *key);

Since 1.0

hb_buffer_guess_segment_properties ()

void
hb_buffer_guess_segment_properties (hb_buffer_t *buffer);

Sets unset buffer segment properties based on buffer Unicode contents. If buffer is not empty, it must have content type HB_BUFFER_CONTENT_TYPE_UNICODE.

If buffer script is not set (ie. is HB_SCRIPT_INVALID), it will be set to the Unicode script of the first character in the buffer that has a script other than HB_SCRIPT_COMMON, HB_SCRIPT_INHERITED, and HB_SCRIPT_UNKNOWN.

Next, if buffer direction is not set (ie. is HB_DIRECTION_INVALID), it will be set to the natural horizontal direction of the buffer script as returned by hb_script_get_horizontal_direction().

Finally, if buffer language is not set (ie. is HB_LANGUAGE_INVALID), it will be set to the process's default language as returned by hb_language_get_default(). This may change in the future by taking buffer script into consideration when choosing a language.

Since 1.0

hb_buffer_normalize_glyphs ()

void
hb_buffer_normalize_glyphs (hb_buffer_t *buffer);

Since 1.0

hb_buffer_pre_allocate ()

hb_bool_t
hb_buffer_pre_allocate (hb_buffer_t *buffer,
                        unsigned int size);

Since 1.0

hb_buffer_reference ()

hb_buffer_t *
hb_buffer_reference (hb_buffer_t *buffer);

Since 1.0

hb_buffer_reset ()

void
hb_buffer_reset (hb_buffer_t *buffer);

Since 1.0

hb_buffer_reverse ()

void
hb_buffer_reverse (hb_buffer_t *buffer);

Reverses buffer contents.

Since 1.0

hb_buffer_reverse_clusters ()

void
hb_buffer_reverse_clusters (hb_buffer_t *buffer);

Reverses buffer clusters. That is, the buffer contents are reversed, then each cluster (consecutive items having the same cluster number) are reversed again.

Since 1.0

hb_buffer_serialize_format_from_string ()

hb_buffer_serialize_format_t
hb_buffer_serialize_format_from_string
                               (const char *str,
                                int len);

Since 1.0

hb_buffer_serialize_format_to_string ()

const char *
hb_buffer_serialize_format_to_string (hb_buffer_serialize_format_t format);

Since 1.0

hb_buffer_serialize_glyphs ()

unsigned int
hb_buffer_serialize_glyphs (hb_buffer_t *buffer,
                            unsigned int start,
                            unsigned int end,
                            char *buf,
                            unsigned int buf_size,
                            unsigned int *buf_consumed,
                            hb_font_t *font,
                            hb_buffer_serialize_format_t format,
                            hb_buffer_serialize_flags_t flags);

Since 1.0

hb_buffer_serialize_list_formats ()

const char **
hb_buffer_serialize_list_formats (void);

Since 1.0

hb_buffer_set_content_type ()

void
hb_buffer_set_content_type (hb_buffer_t *buffer,
                            hb_buffer_content_type_t content_type);

Since 1.0

hb_buffer_set_direction ()

void
hb_buffer_set_direction (hb_buffer_t *buffer,
                         hb_direction_t direction);

Since 1.0

hb_buffer_set_flags ()

void
hb_buffer_set_flags (hb_buffer_t *buffer,
                     hb_buffer_flags_t flags);

Since 1.0

hb_buffer_set_language ()

void
hb_buffer_set_language (hb_buffer_t *buffer,
                        hb_language_t language);

Since 1.0

hb_buffer_set_length ()

hb_bool_t
hb_buffer_set_length (hb_buffer_t *buffer,
                      unsigned int length);

Since 1.0

hb_buffer_set_replacement_codepoint ()

void
hb_buffer_set_replacement_codepoint (hb_buffer_t *buffer,
                                     hb_codepoint_t replacement);

Since 1.0

hb_buffer_set_script ()

void
hb_buffer_set_script (hb_buffer_t *buffer,
                      hb_script_t script);

Since 1.0

hb_buffer_set_segment_properties ()

void
hb_buffer_set_segment_properties (hb_buffer_t *buffer,
                                  const hb_segment_properties_t *props);

Since 1.0

hb_buffer_set_unicode_funcs ()

void
hb_buffer_set_unicode_funcs (hb_buffer_t *buffer,
                             hb_unicode_funcs_t *unicode_funcs);

Since 1.0

hb_buffer_set_user_data ()

hb_bool_t
hb_buffer_set_user_data (hb_buffer_t *buffer,
                         hb_user_data_key_t *key,
                         void *data,
                         hb_destroy_func_t destroy,
                         hb_bool_t replace);

Since 1.0

hb_segment_properties_equal ()

hb_bool_t
hb_segment_properties_equal (const hb_segment_properties_t *a,
                             const hb_segment_properties_t *b);

hb_segment_properties_hash ()

unsigned int
hb_segment_properties_hash (const hb_segment_properties_t *p);

HB_SEGMENT_PROPERTIES_DEFAULT

#define             HB_SEGMENT_PROPERTIES_DEFAULT

enum hb_buffer_content_type_t

enum hb_buffer_flags_t

enum hb_buffer_serialize_flags_t

enum hb_buffer_serialize_format_t

hb_buffer_t

typedef struct hb_buffer_t hb_buffer_t;

hb_glyph_info_t

typedef struct {
  hb_codepoint_t codepoint;
  hb_mask_t      mask;
  uint32_t       cluster;
} hb_glyph_info_t;

hb_glyph_position_t

typedef struct {
  hb_position_t  x_advance;
  hb_position_t  y_advance;
  hb_position_t  x_offset;
  hb_position_t  y_offset;
} hb_glyph_position_t;

hb_segment_properties_t

typedef struct {
  hb_direction_t  direction;
  hb_script_t     script;
  hb_language_t   language;
} hb_segment_properties_t;