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Start filling hb_shape() in

This commit is contained in:
Behdad Esfahbod 2009-11-04 21:07:03 -05:00
parent ae070b7d39
commit 2f50d87368
2 changed files with 40 additions and 1 deletions
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1
src/hb-buffer-private.h
View File

@ -131,6 +131,7 @@ _hb_buffer_allocate_lig_id (hb_buffer_t *buffer);
#define IN_GLYPH(pos) (buffer->in_string[(pos)].codepoint)
#define IN_INFO(pos) (&buffer->in_string[(pos)])
#define IN_CURGLYPH() (buffer->in_string[buffer->in_pos].codepoint)
#define IN_NEXTGLYPH() (buffer->in_string[buffer->in_pos + 1].codepoint)
#define IN_CURINFO() (&buffer->in_string[buffer->in_pos])
#define IN_MASK(pos) (buffer->in_string[(pos)].mask)
#define IN_LIGID(pos) (buffer->in_string[(pos)].lig_id)

40
src/hb-shape.c
View File

@ -28,6 +28,35 @@
#include "hb-shape.h"
#include "hb-buffer-private.h"
static inline hb_bool_t
is_variation_selector (hb_codepoint_t unicode)
{
return (unicode >= 0xFE00 && unicode <= 0xFE0F) ||
(unicode >= 0xE0100 && unicode <= 0xE01EF);
}
static void
map_glyphs (hb_face_t *face,
hb_font_t *font,
hb_buffer_t *buffer)
{
unsigned int count;
count = buffer->in_length - 1;
for (buffer->in_pos = 0; buffer->in_pos < count; buffer->in_pos++) {
if (HB_UNLIKELY (is_variation_selector (IN_NEXTGLYPH()))) {
IN_CURGLYPH() = hb_font_get_glyph (face, font, IN_CURGLYPH(), IN_NEXTGLYPH());
buffer->in_pos++;
} else {
IN_CURGLYPH() = hb_font_get_glyph (face, font, IN_CURGLYPH(), 0);
}
}
IN_CURGLYPH() = hb_font_get_glyph (face, font, IN_CURGLYPH(), 0);
}
void
hb_shape (hb_face_t *face,
@ -36,5 +65,14 @@ hb_shape (hb_face_t *face,
hb_feature_t *features,
unsigned int num_features)
{
}
/* form_clusters (buffer); */
/* do_mirroring (buffer); */
/* natural direction analysis */
/* OT preprocess */
map_glyphs (face, font, buffer);
/* GSUB */
/* Default positioning */
/* GPOS / kern */
}