diff options
Diffstat (limited to 'Build/source/libs/harfbuzz/harfbuzz-src/src/hb-font.h')
-rw-r--r-- | Build/source/libs/harfbuzz/harfbuzz-src/src/hb-font.h | 72 |
1 files changed, 69 insertions, 3 deletions
diff --git a/Build/source/libs/harfbuzz/harfbuzz-src/src/hb-font.h b/Build/source/libs/harfbuzz/harfbuzz-src/src/hb-font.h index c3165e1d74c..82d056c0136 100644 --- a/Build/source/libs/harfbuzz/harfbuzz-src/src/hb-font.h +++ b/Build/source/libs/harfbuzz/harfbuzz-src/src/hb-font.h @@ -78,7 +78,25 @@ HB_EXTERN hb_bool_t hb_font_funcs_is_immutable (hb_font_funcs_t *ffuncs); -/* glyph extents */ +/* font and glyph extents */ + +/* Note that typically ascender is positive and descender negative in coordinate systems that grow up. */ +typedef struct hb_font_extents_t +{ + hb_position_t ascender; /* typographic ascender. */ + hb_position_t descender; /* typographic descender. */ + hb_position_t line_gap; /* suggested line spacing gap. */ + /*< private >*/ + hb_position_t reserved9; + hb_position_t reserved8; + hb_position_t reserved7; + hb_position_t reserved6; + hb_position_t reserved5; + hb_position_t reserved4; + hb_position_t reserved3; + hb_position_t reserved2; + hb_position_t reserved1; +} hb_font_extents_t; /* Note that height is negative in coordinate systems that grow up. */ typedef struct hb_glyph_extents_t @@ -89,9 +107,15 @@ typedef struct hb_glyph_extents_t hb_position_t height; /* distance from top to bottom side. */ } hb_glyph_extents_t; - /* func types */ +typedef hb_bool_t (*hb_font_get_font_extents_func_t) (hb_font_t *font, void *font_data, + hb_font_extents_t *metrics, + void *user_data); +typedef hb_font_get_font_extents_func_t hb_font_get_font_h_extents_func_t; +typedef hb_font_get_font_extents_func_t hb_font_get_font_v_extents_func_t; + + typedef hb_bool_t (*hb_font_get_glyph_func_t) (hb_font_t *font, void *font_data, hb_codepoint_t unicode, hb_codepoint_t variation_selector, hb_codepoint_t *glyph, @@ -141,6 +165,38 @@ typedef hb_bool_t (*hb_font_get_glyph_from_name_func_t) (hb_font_t *font, void * /* func setters */ /** + * hb_font_funcs_set_font_h_extents_func: + * @ffuncs: font functions. + * @func: (closure user_data) (destroy destroy) (scope notified): + * @user_data: + * @destroy: + * + * + * + * Since: 1.1.2 + **/ +HB_EXTERN void +hb_font_funcs_set_font_h_extents_func (hb_font_funcs_t *ffuncs, + hb_font_get_font_h_extents_func_t func, + void *user_data, hb_destroy_func_t destroy); + +/** + * hb_font_funcs_set_font_v_extents_func: + * @ffuncs: font functions. + * @func: (closure user_data) (destroy destroy) (scope notified): + * @user_data: + * @destroy: + * + * + * + * Since: 1.1.2 + **/ +HB_EXTERN void +hb_font_funcs_set_font_v_extents_func (hb_font_funcs_t *ffuncs, + hb_font_get_font_v_extents_func_t func, + void *user_data, hb_destroy_func_t destroy); + +/** * hb_font_funcs_set_glyph_func: * @ffuncs: font functions. * @func: (closure user_data) (destroy destroy) (scope notified): @@ -316,10 +372,16 @@ hb_font_funcs_set_glyph_from_name_func (hb_font_funcs_t *ffuncs, hb_font_get_glyph_from_name_func_t func, void *user_data, hb_destroy_func_t destroy); - /* func dispatch */ HB_EXTERN hb_bool_t +hb_font_get_h_extents (hb_font_t *font, + hb_font_extents_t *extents); +HB_EXTERN hb_bool_t +hb_font_get_v_extents (hb_font_t *font, + hb_font_extents_t *extents); + +HB_EXTERN hb_bool_t hb_font_get_glyph (hb_font_t *font, hb_codepoint_t unicode, hb_codepoint_t variation_selector, hb_codepoint_t *glyph); @@ -370,6 +432,10 @@ hb_font_get_glyph_from_name (hb_font_t *font, /* high-level funcs, with fallback */ HB_EXTERN void +hb_font_get_extents_for_direction (hb_font_t *font, + hb_direction_t direction, + hb_font_extents_t *extents); +HB_EXTERN void hb_font_get_glyph_advance_for_direction (hb_font_t *font, hb_codepoint_t glyph, hb_direction_t direction, |