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Add rtlm

This commit is contained in:
Behdad Esfahbod 2010-05-21 17:58:20 +01:00
parent 074ea78749
commit 1094a294f6
1 changed files with 21 additions and 5 deletions
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26
src/hb-ot-shape.cc
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@ -42,6 +42,12 @@ hb_tag_t default_features[] = {
HB_TAG('m','k','m','k'),
};
enum {
MASK_ALWAYS_ON = 1 << 0,
MASK_RTLM = 1 << 1
};
#define MASK_BITS_USED 2
struct lookup_map {
unsigned int index;
hb_mask_t mask;
@ -148,10 +154,7 @@ setup_lookups (hb_face_t *face,
break;
}
/* Clear buffer masks. */
buffer->clear_masks ();
unsigned int next_bit = 1;
unsigned int next_bit = MASK_BITS_USED;
hb_mask_t global_mask = 0;
for (i = 0; i < num_features; i++)
{
@ -310,7 +313,11 @@ hb_mirror_chars (hb_buffer_t *buffer)
unsigned int count = buffer->len;
for (unsigned int i = 0; i < count; i++) {
buffer->info[i].codepoint = get_mirroring (buffer->info[i].codepoint);
hb_codepoint_t codepoint = get_mirroring (buffer->info[i].codepoint);
if (likely (codepoint == buffer->info[i].codepoint))
buffer->info[i].mask |= MASK_RTLM;
else
buffer->info[i].codepoint = codepoint;
}
}
@ -431,6 +438,10 @@ hb_ot_shape (hb_font_t *font,
hb_form_clusters (buffer);
/* SUBSTITUTE */
buffer->clear_masks ();
hb_substitute_default (font, face, buffer, features, num_features);
/* We do this after substitute_default because mirroring needs to
@ -442,6 +453,11 @@ hb_ot_shape (hb_font_t *font,
if (substitute_fallback)
hb_substitute_complex_fallback (font, face, buffer, features, num_features);
/* POSITION */
buffer->clear_masks ();
hb_position_default (font, face, buffer, features, num_features);
position_fallback = !hb_ot_position_complex (font, face, buffer, features, num_features, original_direction);