hb_unicode_general_category ()

hb_unicode_general_category_t
hb_unicode_general_category (hb_unicode_funcs_t *ufuncs,
                             hb_codepoint_t unicode);

Retrieves the General Category (gc) property of code point unicode .

Since: 0.9.2

hb_unicode_combining_class ()

hb_unicode_combining_class_t
hb_unicode_combining_class (hb_unicode_funcs_t *ufuncs,
                            hb_codepoint_t unicode);

Retrieves the Canonical Combining Class (ccc) property of code point unicode .

Since: 0.9.2

hb_unicode_mirroring ()

hb_codepoint_t
hb_unicode_mirroring (hb_unicode_funcs_t *ufuncs,
                      hb_codepoint_t unicode);

Retrieves the Bi-directional Mirroring Glyph code point defined for code point unicode .

Since: 0.9.2

hb_unicode_script ()

hb_script_t
hb_unicode_script (hb_unicode_funcs_t *ufuncs,
                   hb_codepoint_t unicode);

Retrieves the hb_script_t script to which code point unicode belongs.

Since: 0.9.2

hb_unicode_compose ()

hb_bool_t
hb_unicode_compose (hb_unicode_funcs_t *ufuncs,
                    hb_codepoint_t a,
                    hb_codepoint_t b,
                    hb_codepoint_t *ab);

Fetches the composition of a sequence of two Unicode code points.

Calls the composition function of the specified Unicode-functions structure ufuncs .

Since: 0.9.2

hb_unicode_decompose ()

hb_bool_t
hb_unicode_decompose (hb_unicode_funcs_t *ufuncs,
                      hb_codepoint_t ab,
                      hb_codepoint_t *a,
                      hb_codepoint_t *b);

Fetches the decomposition of a Unicode code point.

Calls the decomposition function of the specified Unicode-functions structure ufuncs .

Since: 0.9.2

hb_unicode_funcs_create ()

hb_unicode_funcs_t *
hb_unicode_funcs_create (hb_unicode_funcs_t *parent);

Creates a new hb_unicode_funcs_t structure of Unicode functions.

Since: 0.9.2

hb_unicode_funcs_get_empty ()

hb_unicode_funcs_t *
hb_unicode_funcs_get_empty (void);

Fetches the singleton empty Unicode-functions structure.

Since: 0.9.2

hb_unicode_funcs_reference ()

hb_unicode_funcs_t *
hb_unicode_funcs_reference (hb_unicode_funcs_t *ufuncs);

Increases the reference count on a Unicode-functions structure.

[skip]

Since: 0.9.2

hb_unicode_funcs_destroy ()

void
hb_unicode_funcs_destroy (hb_unicode_funcs_t *ufuncs);

Decreases the reference count on a Unicode-functions structure. When the reference count reaches zero, the Unicode-functions structure is destroyed, freeing all memory.

[skip]

Since: 0.9.2

hb_unicode_funcs_set_user_data ()

hb_bool_t
hb_unicode_funcs_set_user_data (hb_unicode_funcs_t *ufuncs,
                                hb_user_data_key_t *key,
                                void *data,
                                hb_destroy_func_t destroy,
                                hb_bool_t replace);

Attaches a user-data key/data pair to the specified Unicode-functions structure.

[skip]

Since: 0.9.2

hb_unicode_funcs_get_user_data ()

void *
hb_unicode_funcs_get_user_data (const hb_unicode_funcs_t *ufuncs,
                                hb_user_data_key_t *key);

Fetches the user-data associated with the specified key, attached to the specified Unicode-functions structure.

[skip]

Since: 0.9.2

hb_unicode_funcs_make_immutable ()

void
hb_unicode_funcs_make_immutable (hb_unicode_funcs_t *ufuncs);

Makes the specified Unicode-functions structure immutable.

Since: 0.9.2

hb_unicode_funcs_is_immutable ()

hb_bool_t
hb_unicode_funcs_is_immutable (hb_unicode_funcs_t *ufuncs);

Tests whether the specified Unicode-functions structure is immutable.

Since: 0.9.2

hb_unicode_funcs_get_default ()

hb_unicode_funcs_t *
hb_unicode_funcs_get_default (void);

Fetches a pointer to the default Unicode-functions structure that is used when no functions are explicitly set on hb_buffer_t.

Since: 0.9.2

hb_unicode_funcs_get_parent ()

hb_unicode_funcs_t *
hb_unicode_funcs_get_parent (hb_unicode_funcs_t *ufuncs);

Fetches the parent of the Unicode-functions structure ufuncs .

Since: 0.9.2

hb_unicode_general_category_func_t ()

hb_unicode_general_category_t
(*hb_unicode_general_category_func_t) (hb_unicode_funcs_t *ufuncs,
                                       hb_codepoint_t unicode,
                                       void *user_data);

A virtual method for the hb_unicode_funcs_t structure.

This method should retrieve the General Category property for a specified Unicode code point.

hb_unicode_funcs_set_general_category_func ()

void
hb_unicode_funcs_set_general_category_func
                               (hb_unicode_funcs_t *ufuncs,
                                hb_unicode_general_category_func_t func,
                                void *user_data,
                                hb_destroy_func_t destroy);

Sets the implementation function for hb_unicode_general_category_func_t.

Since: 0.9.2

hb_unicode_combining_class_func_t ()

hb_unicode_combining_class_t
(*hb_unicode_combining_class_func_t) (hb_unicode_funcs_t *ufuncs,
                                      hb_codepoint_t unicode,
                                      void *user_data);

A virtual method for the hb_unicode_funcs_t structure.

This method should retrieve the Canonical Combining Class (ccc) property for a specified Unicode code point.

hb_unicode_funcs_set_combining_class_func ()

void
hb_unicode_funcs_set_combining_class_func
                               (hb_unicode_funcs_t *ufuncs,
                                hb_unicode_combining_class_func_t func,
                                void *user_data,
                                hb_destroy_func_t destroy);

Sets the implementation function for hb_unicode_combining_class_func_t.

Since: 0.9.2

hb_unicode_mirroring_func_t ()

hb_codepoint_t
(*hb_unicode_mirroring_func_t) (hb_unicode_funcs_t *ufuncs,
                                hb_codepoint_t unicode,
                                void *user_data);

A virtual method for the hb_unicode_funcs_t structure.

This method should retrieve the Bi-Directional Mirroring Glyph code point for a specified Unicode code point.

hb_unicode_funcs_set_mirroring_func ()

void
hb_unicode_funcs_set_mirroring_func (hb_unicode_funcs_t *ufuncs,
                                     hb_unicode_mirroring_func_t func,
                                     void *user_data,
                                     hb_destroy_func_t destroy);

Sets the implementation function for hb_unicode_mirroring_func_t.

Since: 0.9.2

hb_unicode_script_func_t ()

hb_script_t
(*hb_unicode_script_func_t) (hb_unicode_funcs_t *ufuncs,
                             hb_codepoint_t unicode,
                             void *user_data);

A virtual method for the hb_unicode_funcs_t structure.

This method should retrieve the Script property for a specified Unicode code point.

hb_unicode_funcs_set_script_func ()

void
hb_unicode_funcs_set_script_func (hb_unicode_funcs_t *ufuncs,
                                  hb_unicode_script_func_t func,
                                  void *user_data,
                                  hb_destroy_func_t destroy);

Sets the implementation function for hb_unicode_script_func_t.

Since: 0.9.2

hb_unicode_compose_func_t ()

hb_bool_t
(*hb_unicode_compose_func_t) (hb_unicode_funcs_t *ufuncs,
                              hb_codepoint_t a,
                              hb_codepoint_t b,
                              hb_codepoint_t *ab,
                              void *user_data);

A virtual method for the hb_unicode_funcs_t structure.

This method should compose a sequence of two input Unicode code points by canonical equivalence, returning the composed code point in a hb_codepoint_t output parameter (if successful). The method must return an hb_bool_t indicating the success of the composition.

hb_unicode_funcs_set_compose_func ()

void
hb_unicode_funcs_set_compose_func (hb_unicode_funcs_t *ufuncs,
                                   hb_unicode_compose_func_t func,
                                   void *user_data,
                                   hb_destroy_func_t destroy);

Sets the implementation function for hb_unicode_compose_func_t.

Since: 0.9.2

hb_unicode_decompose_func_t ()

hb_bool_t
(*hb_unicode_decompose_func_t) (hb_unicode_funcs_t *ufuncs,
                                hb_codepoint_t ab,
                                hb_codepoint_t *a,
                                hb_codepoint_t *b,
                                void *user_data);

A virtual method for the hb_unicode_funcs_t structure.

This method should decompose an input Unicode code point, returning the two decomposed code points in hb_codepoint_t output parameters (if successful). The method must return an hb_bool_t indicating the success of the composition.

hb_unicode_funcs_set_decompose_func ()

void
hb_unicode_funcs_set_decompose_func (hb_unicode_funcs_t *ufuncs,
                                     hb_unicode_decompose_func_t func,
                                     void *user_data,
                                     hb_destroy_func_t destroy);

Sets the implementation function for hb_unicode_decompose_func_t.

Since: 0.9.2

HB_UNICODE_MAX

#define HB_UNICODE_MAX 0x10FFFFu

Maximum valid Unicode code point.

Since: 1.9.0

enum hb_unicode_combining_class_t

Data type for the Canonical_Combining_Class (ccc) property from the Unicode Character Database.

enum hb_unicode_general_category_t

Data type for the "General_Category" (gc) property from the Unicode Character Database.

hb_unicode_funcs_t

typedef struct hb_unicode_funcs_t hb_unicode_funcs_t;

Data type containing a set of virtual methods used for accessing various Unicode character properties.

HarfBuzz provides a default function for each of the methods in hb_unicode_funcs_t. Client programs can implement their own replacements for the individual Unicode functions, as needed, and replace the default by calling the setter for a method.