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Unified Diff: third_party/harfbuzz-ng/src/hb-font.h

Issue 1580513002: Roll HarfBuzz to 1.1.3 (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: build fix Created 4 years, 11 months ago
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Index: third_party/harfbuzz-ng/src/hb-font.h
diff --git a/third_party/harfbuzz-ng/src/hb-font.h b/third_party/harfbuzz-ng/src/hb-font.h
index fb4a0eab5a99f53fd0fb683be13c0f1c9d2cdaa7..82d056c0136624fc5d3667a81aefa3c90282968a 100644
--- a/third_party/harfbuzz-ng/src/hb-font.h
+++ b/third_party/harfbuzz-ng/src/hb-font.h
@@ -46,19 +46,19 @@ typedef struct hb_font_t hb_font_t;
typedef struct hb_font_funcs_t hb_font_funcs_t;
-hb_font_funcs_t *
+HB_EXTERN hb_font_funcs_t *
hb_font_funcs_create (void);
-hb_font_funcs_t *
+HB_EXTERN hb_font_funcs_t *
hb_font_funcs_get_empty (void);
-hb_font_funcs_t *
+HB_EXTERN hb_font_funcs_t *
hb_font_funcs_reference (hb_font_funcs_t *ffuncs);
-void
+HB_EXTERN void
hb_font_funcs_destroy (hb_font_funcs_t *ffuncs);
-hb_bool_t
+HB_EXTERN hb_bool_t
hb_font_funcs_set_user_data (hb_font_funcs_t *ffuncs,
hb_user_data_key_t *key,
void * data,
@@ -66,19 +66,37 @@ hb_font_funcs_set_user_data (hb_font_funcs_t *ffuncs,
hb_bool_t replace);
-void *
+HB_EXTERN void *
hb_font_funcs_get_user_data (hb_font_funcs_t *ffuncs,
hb_user_data_key_t *key);
-void
+HB_EXTERN void
hb_font_funcs_make_immutable (hb_font_funcs_t *ffuncs);
-hb_bool_t
+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):
@@ -151,7 +207,7 @@ typedef hb_bool_t (*hb_font_get_glyph_from_name_func_t) (hb_font_t *font, void *
*
* Since: 0.9.2
**/
-void
+HB_EXTERN void
hb_font_funcs_set_glyph_func (hb_font_funcs_t *ffuncs,
hb_font_get_glyph_func_t func,
void *user_data, hb_destroy_func_t destroy);
@@ -167,7 +223,7 @@ hb_font_funcs_set_glyph_func (hb_font_funcs_t *ffuncs,
*
* Since: 0.9.2
**/
-void
+HB_EXTERN void
hb_font_funcs_set_glyph_h_advance_func (hb_font_funcs_t *ffuncs,
hb_font_get_glyph_h_advance_func_t func,
void *user_data, hb_destroy_func_t destroy);
@@ -183,7 +239,7 @@ hb_font_funcs_set_glyph_h_advance_func (hb_font_funcs_t *ffuncs,
*
* Since: 0.9.2
**/
-void
+HB_EXTERN void
hb_font_funcs_set_glyph_v_advance_func (hb_font_funcs_t *ffuncs,
hb_font_get_glyph_v_advance_func_t func,
void *user_data, hb_destroy_func_t destroy);
@@ -199,7 +255,7 @@ hb_font_funcs_set_glyph_v_advance_func (hb_font_funcs_t *ffuncs,
*
* Since: 0.9.2
**/
-void
+HB_EXTERN void
hb_font_funcs_set_glyph_h_origin_func (hb_font_funcs_t *ffuncs,
hb_font_get_glyph_h_origin_func_t func,
void *user_data, hb_destroy_func_t destroy);
@@ -215,7 +271,7 @@ hb_font_funcs_set_glyph_h_origin_func (hb_font_funcs_t *ffuncs,
*
* Since: 0.9.2
**/
-void
+HB_EXTERN void
hb_font_funcs_set_glyph_v_origin_func (hb_font_funcs_t *ffuncs,
hb_font_get_glyph_v_origin_func_t func,
void *user_data, hb_destroy_func_t destroy);
@@ -231,7 +287,7 @@ hb_font_funcs_set_glyph_v_origin_func (hb_font_funcs_t *ffuncs,
*
* Since: 0.9.2
**/
-void
+HB_EXTERN void
hb_font_funcs_set_glyph_h_kerning_func (hb_font_funcs_t *ffuncs,
hb_font_get_glyph_h_kerning_func_t func,
void *user_data, hb_destroy_func_t destroy);
@@ -247,7 +303,7 @@ hb_font_funcs_set_glyph_h_kerning_func (hb_font_funcs_t *ffuncs,
*
* Since: 0.9.2
**/
-void
+HB_EXTERN void
hb_font_funcs_set_glyph_v_kerning_func (hb_font_funcs_t *ffuncs,
hb_font_get_glyph_v_kerning_func_t func,
void *user_data, hb_destroy_func_t destroy);
@@ -263,7 +319,7 @@ hb_font_funcs_set_glyph_v_kerning_func (hb_font_funcs_t *ffuncs,
*
* Since: 0.9.2
**/
-void
+HB_EXTERN void
hb_font_funcs_set_glyph_extents_func (hb_font_funcs_t *ffuncs,
hb_font_get_glyph_extents_func_t func,
void *user_data, hb_destroy_func_t destroy);
@@ -279,7 +335,7 @@ hb_font_funcs_set_glyph_extents_func (hb_font_funcs_t *ffuncs,
*
* Since: 0.9.2
**/
-void
+HB_EXTERN void
hb_font_funcs_set_glyph_contour_point_func (hb_font_funcs_t *ffuncs,
hb_font_get_glyph_contour_point_func_t func,
void *user_data, hb_destroy_func_t destroy);
@@ -295,7 +351,7 @@ hb_font_funcs_set_glyph_contour_point_func (hb_font_funcs_t *ffuncs,
*
* Since: 0.9.2
**/
-void
+HB_EXTERN void
hb_font_funcs_set_glyph_name_func (hb_font_funcs_t *ffuncs,
hb_font_get_glyph_name_func_t func,
void *user_data, hb_destroy_func_t destroy);
@@ -311,57 +367,63 @@ hb_font_funcs_set_glyph_name_func (hb_font_funcs_t *ffuncs,
*
* Since: 0.9.2
**/
-void
+HB_EXTERN void
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_bool_t
+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);
-hb_position_t
+HB_EXTERN hb_position_t
hb_font_get_glyph_h_advance (hb_font_t *font,
hb_codepoint_t glyph);
-hb_position_t
+HB_EXTERN hb_position_t
hb_font_get_glyph_v_advance (hb_font_t *font,
hb_codepoint_t glyph);
-hb_bool_t
+HB_EXTERN hb_bool_t
hb_font_get_glyph_h_origin (hb_font_t *font,
hb_codepoint_t glyph,
hb_position_t *x, hb_position_t *y);
-hb_bool_t
+HB_EXTERN hb_bool_t
hb_font_get_glyph_v_origin (hb_font_t *font,
hb_codepoint_t glyph,
hb_position_t *x, hb_position_t *y);
-hb_position_t
+HB_EXTERN hb_position_t
hb_font_get_glyph_h_kerning (hb_font_t *font,
hb_codepoint_t left_glyph, hb_codepoint_t right_glyph);
-hb_position_t
+HB_EXTERN hb_position_t
hb_font_get_glyph_v_kerning (hb_font_t *font,
hb_codepoint_t top_glyph, hb_codepoint_t bottom_glyph);
-hb_bool_t
+HB_EXTERN hb_bool_t
hb_font_get_glyph_extents (hb_font_t *font,
hb_codepoint_t glyph,
hb_glyph_extents_t *extents);
-hb_bool_t
+HB_EXTERN hb_bool_t
hb_font_get_glyph_contour_point (hb_font_t *font,
hb_codepoint_t glyph, unsigned int point_index,
hb_position_t *x, hb_position_t *y);
-hb_bool_t
+HB_EXTERN hb_bool_t
hb_font_get_glyph_name (hb_font_t *font,
hb_codepoint_t glyph,
char *name, unsigned int size);
-hb_bool_t
+HB_EXTERN hb_bool_t
hb_font_get_glyph_from_name (hb_font_t *font,
const char *name, int len, /* -1 means nul-terminated */
hb_codepoint_t *glyph);
@@ -369,52 +431,56 @@ hb_font_get_glyph_from_name (hb_font_t *font,
/* high-level funcs, with fallback */
-void
+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,
hb_position_t *x, hb_position_t *y);
-void
+HB_EXTERN void
hb_font_get_glyph_origin_for_direction (hb_font_t *font,
hb_codepoint_t glyph,
hb_direction_t direction,
hb_position_t *x, hb_position_t *y);
-void
+HB_EXTERN void
hb_font_add_glyph_origin_for_direction (hb_font_t *font,
hb_codepoint_t glyph,
hb_direction_t direction,
hb_position_t *x, hb_position_t *y);
-void
+HB_EXTERN void
hb_font_subtract_glyph_origin_for_direction (hb_font_t *font,
hb_codepoint_t glyph,
hb_direction_t direction,
hb_position_t *x, hb_position_t *y);
-void
+HB_EXTERN void
hb_font_get_glyph_kerning_for_direction (hb_font_t *font,
hb_codepoint_t first_glyph, hb_codepoint_t second_glyph,
hb_direction_t direction,
hb_position_t *x, hb_position_t *y);
-hb_bool_t
+HB_EXTERN hb_bool_t
hb_font_get_glyph_extents_for_origin (hb_font_t *font,
hb_codepoint_t glyph,
hb_direction_t direction,
hb_glyph_extents_t *extents);
-hb_bool_t
+HB_EXTERN hb_bool_t
hb_font_get_glyph_contour_point_for_origin (hb_font_t *font,
hb_codepoint_t glyph, unsigned int point_index,
hb_direction_t direction,
hb_position_t *x, hb_position_t *y);
/* Generates gidDDD if glyph has no name. */
-void
+HB_EXTERN void
hb_font_glyph_to_string (hb_font_t *font,
hb_codepoint_t glyph,
char *s, unsigned int size);
/* Parses gidDDD and uniUUUU strings automatically. */
-hb_bool_t
+HB_EXTERN hb_bool_t
hb_font_glyph_from_string (hb_font_t *font,
const char *s, int len, /* -1 means nul-terminated */
hb_codepoint_t *glyph);
@@ -426,22 +492,22 @@ hb_font_glyph_from_string (hb_font_t *font,
/* Fonts are very light-weight objects */
-hb_font_t *
+HB_EXTERN hb_font_t *
hb_font_create (hb_face_t *face);
-hb_font_t *
+HB_EXTERN hb_font_t *
hb_font_create_sub_font (hb_font_t *parent);
-hb_font_t *
+HB_EXTERN hb_font_t *
hb_font_get_empty (void);
-hb_font_t *
+HB_EXTERN hb_font_t *
hb_font_reference (hb_font_t *font);
-void
+HB_EXTERN void
hb_font_destroy (hb_font_t *font);
-hb_bool_t
+HB_EXTERN hb_bool_t
hb_font_set_user_data (hb_font_t *font,
hb_user_data_key_t *key,
void * data,
@@ -449,46 +515,46 @@ hb_font_set_user_data (hb_font_t *font,
hb_bool_t replace);
-void *
+HB_EXTERN void *
hb_font_get_user_data (hb_font_t *font,
hb_user_data_key_t *key);
-void
+HB_EXTERN void
hb_font_make_immutable (hb_font_t *font);
-hb_bool_t
+HB_EXTERN hb_bool_t
hb_font_is_immutable (hb_font_t *font);
-void
+HB_EXTERN void
hb_font_set_parent (hb_font_t *font,
hb_font_t *parent);
-hb_font_t *
+HB_EXTERN hb_font_t *
hb_font_get_parent (hb_font_t *font);
-hb_face_t *
+HB_EXTERN hb_face_t *
hb_font_get_face (hb_font_t *font);
-void
+HB_EXTERN void
hb_font_set_funcs (hb_font_t *font,
hb_font_funcs_t *klass,
void *font_data,
hb_destroy_func_t destroy);
/* Be *very* careful with this function! */
-void
+HB_EXTERN void
hb_font_set_funcs_data (hb_font_t *font,
void *font_data,
hb_destroy_func_t destroy);
-void
+HB_EXTERN void
hb_font_set_scale (hb_font_t *font,
int x_scale,
int y_scale);
-void
+HB_EXTERN void
hb_font_get_scale (hb_font_t *font,
int *x_scale,
int *y_scale);
@@ -496,12 +562,12 @@ hb_font_get_scale (hb_font_t *font,
/*
* A zero value means "no hinting in that direction"
*/
-void
+HB_EXTERN void
hb_font_set_ppem (hb_font_t *font,
unsigned int x_ppem,
unsigned int y_ppem);
-void
+HB_EXTERN void
hb_font_get_ppem (hb_font_t *font,
unsigned int *x_ppem,
unsigned int *y_ppem);
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