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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. If two features
have the same tag but
overlapping ranges the value of the feature with the higher index takes
precedence.
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 |
[array length=num_features][allow-none] |
num_features |
the length of |
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 |
[array length=num_features][allow-none] |
num_features |
the length of |
|
shaper_list |
a |
[array zero-terminated=1][allow-none] |
Since: 0.9.2
hb_shape_list_shapers ()
const char **
hb_shape_list_shapers (void);
Retrieves the list of shapers supported by HarfBuzz.
Since: 0.9.2