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hb-shape

hb-shape — Conversion of text strings into positioned glyphs

Functions

void hb_shape ()
hb_bool_t hb_shape_full ()
const char ** hb_shape_list_shapers ()

Includes

#include <hb.h>

Description

Shaping is the central operation of HarfBuzz. Shaping operates on buffers, which are sequences of Unicode characters that use the same font and have the same text direction, script, and language. After shaping the buffer contains the output glyphs and their positions.

Functions

hb_shape ()

void
hb_shape (hb_font_t *font,
          hb_buffer_t *buffer,
          const hb_feature_t *features,
          unsigned int num_features);

Shapes buffer using font turning its Unicode characters content to positioned glyphs. If features is not NULL, it will be used to control the features applied during shaping.

Parameters

font

an hb_font_t to use for shaping

 

buffer

an hb_buffer_t to shape

 

features

an array of user specified hb_feature_t or NULL.

[array length=num_features][allow-none]

num_features

the length of features array

 

Since: 0.9.2


hb_shape_full ()

hb_bool_t
hb_shape_full (hb_font_t *font,
               hb_buffer_t *buffer,
               const hb_feature_t *features,
               unsigned int num_features,
               const char * const *shaper_list);

See hb_shape() for details. If shaper_list is not NULL, the specified shapers will be used in the given order, otherwise the default shapers list will be used.

Parameters

font

an hb_font_t to use for shaping

 

buffer

an hb_buffer_t to shape

 

features

an array of user specified hb_feature_t or NULL.

[array length=num_features][allow-none]

num_features

the length of features array

 

shaper_list

a NULL-terminated array of shapers to use or NULL.

[array zero-terminated=1][allow-none]

Returns

false if all shapers failed, true otherwise

Since: 0.9.2


hb_shape_list_shapers ()

const char **
hb_shape_list_shapers (void);

Retrieves the list of shapers supported by HarfBuzz.

Returns

an array of constant strings.

[transfer none][array zero-terminated=1]

Since: 0.9.2

Types and Values

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