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[indic] Minor refactoring of would_substitute()

This commit is contained in:
Behdad Esfahbod 2013-10-17 18:30:06 +02:00
parent 321df83fb4
commit 684fe59ff8
1 changed files with 10 additions and 9 deletions
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19
src/hb-ot-shape-complex-indic.cc
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@ -568,7 +568,8 @@ data_destroy_indic (void *data)
static indic_position_t
consonant_position_from_face (const indic_shape_plan_t *indic_plan,
const hb_codepoint_t glyphs[2],
const hb_codepoint_t consonant,
const hb_codepoint_t virama,
hb_face_t *face)
{
/* For old-spec, the order of glyphs is Consonant,Virama,
@ -581,15 +582,15 @@ consonant_position_from_face (const indic_shape_plan_t *indic_plan,
* 930,94D in 'blwf', not the expected 94D,930 (with new-spec
* table). As such, we simply match both sequences. Seems
* to work. */
hb_codepoint_t glyphs_r[2] = {glyphs[1], glyphs[0]};
hb_codepoint_t glyphs[3] = {virama, consonant, virama};
if (indic_plan->blwf.would_substitute (glyphs , 2, face) ||
indic_plan->blwf.would_substitute (glyphs_r, 2, face))
indic_plan->blwf.would_substitute (glyphs+1, 2, face))
return POS_BELOW_C;
if (indic_plan->pstf.would_substitute (glyphs , 2, face) ||
indic_plan->pstf.would_substitute (glyphs_r, 2, face))
indic_plan->pstf.would_substitute (glyphs+1, 2, face))
return POS_POST_C;
if (indic_plan->pref.would_substitute (glyphs , 2, face) ||
indic_plan->pref.would_substitute (glyphs_r, 2, face))
indic_plan->pref.would_substitute (glyphs+1, 2, face))
return POS_POST_C;
return POS_BASE_C;
}
@ -652,15 +653,15 @@ update_consonant_positions (const hb_ot_shape_plan_t *plan,
if (indic_plan->config->base_pos != BASE_POS_LAST)
return;
hb_codepoint_t glyphs[2];
if (indic_plan->get_virama_glyph (font, &glyphs[0]))
hb_codepoint_t virama;
if (indic_plan->get_virama_glyph (font, &virama))
{
hb_face_t *face = font->face;
unsigned int count = buffer->len;
for (unsigned int i = 0; i < count; i++)
if (buffer->info[i].indic_position() == POS_BASE_C) {
glyphs[1] = buffer->info[i].codepoint;
buffer->info[i].indic_position() = consonant_position_from_face (indic_plan, glyphs, face);
hb_codepoint_t consonant = buffer->info[i].codepoint;
buffer->info[i].indic_position() = consonant_position_from_face (indic_plan, consonant, virama, face);
}
}
}