diff options
Diffstat (limited to 'thirdparty/harfbuzz/src/hb-buffer.h')
| -rw-r--r-- | thirdparty/harfbuzz/src/hb-buffer.h | 52 |
1 files changed, 50 insertions, 2 deletions
diff --git a/thirdparty/harfbuzz/src/hb-buffer.h b/thirdparty/harfbuzz/src/hb-buffer.h index 2f581f3c73..b13757e68f 100644 --- a/thirdparty/harfbuzz/src/hb-buffer.h +++ b/thirdparty/harfbuzz/src/hb-buffer.h @@ -59,8 +59,7 @@ HB_BEGIN_DECLS * The #hb_glyph_info_t is the structure that holds information about the * glyphs and their relation to input text. */ -typedef struct hb_glyph_info_t -{ +typedef struct hb_glyph_info_t { hb_codepoint_t codepoint; /*< private >*/ hb_mask_t mask; @@ -315,6 +314,23 @@ hb_buffer_get_flags (hb_buffer_t *buffer); * @HB_BUFFER_CLUSTER_LEVEL_CHARACTERS: Don't group cluster values. * @HB_BUFFER_CLUSTER_LEVEL_DEFAULT: Default cluster level, * equal to @HB_BUFFER_CLUSTER_LEVEL_MONOTONE_GRAPHEMES. + * + * Data type for holding HarfBuzz's clustering behavior options. The cluster level + * dictates one aspect of how HarfBuzz will treat non-base characters + * during shaping. + * + * In @HB_BUFFER_CLUSTER_LEVEL_MONOTONE_GRAPHEMES, non-base + * characters are merged into the cluster of the base character that precedes them. + * + * In @HB_BUFFER_CLUSTER_LEVEL_MONOTONE_CHARACTERS, non-base characters are initially + * assigned their own cluster values, which are not merged into preceding base + * clusters. This allows HarfBuzz to perform additional operations like reorder + * sequences of adjacent marks. + * + * @HB_BUFFER_CLUSTER_LEVEL_MONOTONE_GRAPHEMES is the default, because it maintains + * backward compatibility with older versions of HarfBuzz. New client programs that + * do not need to maintain such backward compatibility are recommended to use + * @HB_BUFFER_CLUSTER_LEVEL_MONOTONE_CHARACTERS instead of the default. * * Since: 0.9.42 */ @@ -447,6 +463,9 @@ HB_EXTERN hb_glyph_position_t * hb_buffer_get_glyph_positions (hb_buffer_t *buffer, unsigned int *length); +HB_EXTERN hb_bool_t +hb_buffer_has_positions (hb_buffer_t *buffer); + HB_EXTERN void hb_buffer_normalize_glyphs (hb_buffer_t *buffer); @@ -518,6 +537,27 @@ hb_buffer_serialize_glyphs (hb_buffer_t *buffer, hb_buffer_serialize_format_t format, hb_buffer_serialize_flags_t flags); +HB_EXTERN unsigned int +hb_buffer_serialize_unicode (hb_buffer_t *buffer, + unsigned int start, + unsigned int end, + char *buf, + unsigned int buf_size, + unsigned int *buf_consumed, + hb_buffer_serialize_format_t format, + hb_buffer_serialize_flags_t flags); + +HB_EXTERN unsigned int +hb_buffer_serialize (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); + HB_EXTERN hb_bool_t hb_buffer_deserialize_glyphs (hb_buffer_t *buffer, const char *buf, @@ -526,6 +566,14 @@ hb_buffer_deserialize_glyphs (hb_buffer_t *buffer, hb_font_t *font, hb_buffer_serialize_format_t format); +HB_EXTERN hb_bool_t +hb_buffer_deserialize_unicode (hb_buffer_t *buffer, + const char *buf, + int buf_len, + const char **end_ptr, + hb_buffer_serialize_format_t format); + + /* * Compare buffers |