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This commit is contained in:
Behdad Esfahbod 2012-08-09 21:31:52 -04:00
parent 56c9e7c004
commit 8d1eef3f32
1 changed files with 31 additions and 19 deletions
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50
src/hb-ot-shape-normalize.cc
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@ -258,13 +258,25 @@ compose_func (hb_unicode_funcs_t *unicode,
return found;
}
static void
output_glyph (hb_buffer_t *buffer, hb_codepoint_t glyph)
static inline void
output_char (hb_buffer_t *buffer, hb_codepoint_t unichar)
{
buffer->output_glyph (glyph);
buffer->output_glyph (unichar);
_hb_glyph_info_set_unicode_props (&buffer->prev(), buffer->unicode);
}
static inline void
next_char (hb_buffer_t *buffer)
{
buffer->next_glyph ();
}
static inline void
skip_char (hb_buffer_t *buffer)
{
buffer->skip_glyph ();
}
static bool
decompose (hb_font_t *font, hb_buffer_t *buffer,
bool shortest,
@ -279,22 +291,22 @@ decompose (hb_font_t *font, hb_buffer_t *buffer,
bool has_a = font->get_glyph (a, 0, &glyph);
if (shortest && has_a) {
/* Output a and b */
output_glyph (buffer, a);
output_char (buffer, a);
if (b)
output_glyph (buffer, b);
output_char (buffer, b);
return true;
}
if (decompose (font, buffer, shortest, a)) {
if (b)
output_glyph (buffer, b);
output_char (buffer, b);
return true;
}
if (has_a) {
output_glyph (buffer, a);
output_char (buffer, a);
if (b)
output_glyph (buffer, b);
output_char (buffer, b);
return true;
}
@ -318,7 +330,7 @@ decompose_compatibility (hb_font_t *font, hb_buffer_t *buffer,
return false;
for (i = 0; i < len; i++)
output_glyph (buffer, decomposed[i]);
output_char (buffer, decomposed[i]);
return true;
}
@ -331,15 +343,15 @@ decompose_current_character (hb_font_t *font, hb_buffer_t *buffer,
/* Kind of a cute waterfall here... */
if (shortest && font->get_glyph (buffer->cur().codepoint, 0, &glyph))
buffer->next_glyph ();
next_char (buffer);
else if (decompose (font, buffer, shortest, buffer->cur().codepoint))
buffer->skip_glyph ();
skip_char (buffer);
else if (!shortest && font->get_glyph (buffer->cur().codepoint, 0, &glyph))
buffer->next_glyph ();
next_char (buffer);
else if (decompose_compatibility (font, buffer, buffer->cur().codepoint))
buffer->skip_glyph ();
skip_char (buffer);
else
buffer->next_glyph ();
next_char (buffer);
}
static void
@ -350,7 +362,7 @@ decompose_multi_char_cluster (hb_font_t *font, hb_buffer_t *buffer,
for (unsigned int i = buffer->idx; i < end; i++)
if (unlikely (buffer->unicode->is_variation_selector (buffer->info[i].codepoint))) {
while (buffer->idx < end)
buffer->next_glyph ();
next_char (buffer);
return;
}
@ -445,7 +457,7 @@ _hb_ot_shape_normalize (hb_font_t *font, hb_buffer_t *buffer,
buffer->clear_output ();
count = buffer->len;
unsigned int starter = 0;
buffer->next_glyph ();
next_char (buffer);
while (buffer->idx < count)
{
hb_codepoint_t composed, glyph;
@ -466,11 +478,11 @@ _hb_ot_shape_normalize (hb_font_t *font, hb_buffer_t *buffer,
font->get_glyph (composed, 0, &glyph))
{
/* Composes. */
buffer->next_glyph (); /* Copy to out-buffer. */
next_char (buffer); /* Copy to out-buffer. */
if (unlikely (buffer->in_error))
return;
buffer->merge_out_clusters (starter, buffer->out_len);
buffer->out_len--; /* Remove the second composble. */
buffer->out_len--; /* Remove the second composable. */
buffer->out_info[starter].codepoint = composed; /* Modify starter and carry on. */
_hb_glyph_info_set_unicode_props (&buffer->out_info[starter], buffer->unicode);
@ -478,7 +490,7 @@ _hb_ot_shape_normalize (hb_font_t *font, hb_buffer_t *buffer,
}
/* Blocked, or doesn't compose. */
buffer->next_glyph ();
next_char (buffer);
if (_hb_glyph_info_get_modified_combining_class (&buffer->prev()) == 0)
starter = buffer->out_len - 1;