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[var] Add hb_font_set_var_coords()

This commit is contained in:
Behdad Esfahbod 2017-01-21 15:21:50 -08:00
parent 113393efec
commit 2491134b38
2 changed files with 42 additions and 4 deletions
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38
src/hb-font.cc
View File

@ -1540,11 +1540,45 @@ hb_font_get_ppem (hb_font_t *font,
* Variations
*/
void
hb_font_set_var_coords (hb_font_t *font,
const hb_var_coord_t *coords,
unsigned int coords_length)
{
if (font->immutable)
return;
if (!coords_length)
{
hb_font_set_var_coords_normalized (font, NULL, 0);
return;
}
hb_face_t *face = font->face;
unsigned int length = hb_ot_var_get_axis_count (face);
int normalized[length]; // XXX Remove variable-length array use...
memset (normalized, 0, length * sizeof (normalized[0]));
for (unsigned int i = 0; i < coords_length; i++)
{
unsigned int axis_index;
if (hb_ot_var_find_axis (face, coords[i].tag, &axis_index, NULL))
normalized[axis_index] = hb_ot_var_normalize_axis_value (face, axis_index, coords[i].value);
}
hb_font_set_var_coords_normalized (font, normalized, coords_length);
}
void
hb_font_set_var_coords_design (hb_font_t *font,
float *coords,
const float *coords,
unsigned int coords_length)
{
if (font->immutable)
return;
int normalized[coords_length]; // XXX Remove variable-length array use...
hb_face_t *face = font->face;
@ -1556,7 +1590,7 @@ hb_font_set_var_coords_design (hb_font_t *font,
void
hb_font_set_var_coords_normalized (hb_font_t *font,
int *coords, /* 2.14 normalized */
const int *coords, /* 2.14 normalized */
unsigned int coords_length)
{
if (font->immutable)

8
src/hb-font.h
View File

@ -603,15 +603,19 @@ hb_font_get_ppem (hb_font_t *font,
unsigned int *x_ppem,
unsigned int *y_ppem);
HB_EXTERN void
hb_font_set_var_coords (hb_font_t *font,
const hb_var_coord_t *coords,
unsigned int coords_length);
HB_EXTERN void
hb_font_set_var_coords_design (hb_font_t *font,
float *coords,
const float *coords,
unsigned int coords_length);
HB_EXTERN void
hb_font_set_var_coords_normalized (hb_font_t *font,
int *coords, /* 2.14 normalized */
const int *coords, /* 2.14 normalized */
unsigned int coords_length);
HB_EXTERN int *