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Add buffer->replace_glyphs()

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This commit is contained in:
Behdad Esfahbod 2011-08-26 09:29:42 +02:00
parent a5edb1031c
commit 9ebe8c0286
2 changed files with 29 additions and 0 deletions
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3
src/hb-buffer-private.hh
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@ -102,6 +102,9 @@ struct _hb_buffer_t {
HB_INTERNAL void replace_glyphs_be16 (unsigned int num_in, HB_INTERNAL void replace_glyphs_be16 (unsigned int num_in,
unsigned int num_out, unsigned int num_out,
const uint16_t *glyph_data_be); const uint16_t *glyph_data_be);
HB_INTERNAL void replace_glyphs (unsigned int num_in,
unsigned int num_out,
const uint16_t *glyph_data);
HB_INTERNAL void replace_glyph (hb_codepoint_t glyph_index); HB_INTERNAL void replace_glyph (hb_codepoint_t glyph_index);
/* Makes a copy of the glyph at idx to output and replace glyph_index */ /* Makes a copy of the glyph at idx to output and replace glyph_index */
HB_INTERNAL void output_glyph (hb_codepoint_t glyph_index); HB_INTERNAL void output_glyph (hb_codepoint_t glyph_index);

26
src/hb-buffer.cc
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@ -267,6 +267,32 @@ hb_buffer_t::replace_glyphs_be16 (unsigned int num_in,
out_len += num_out; out_len += num_out;
} }
void
hb_buffer_t::replace_glyphs (unsigned int num_in,
unsigned int num_out,
const uint16_t *glyph_data)
{
if (!make_room_for (num_in, num_out)) return;
hb_glyph_info_t orig_info = info[idx];
for (unsigned int i = 1; i < num_in; i++)
{
hb_glyph_info_t *inf = &info[idx + i];
orig_info.cluster = MIN (orig_info.cluster, inf->cluster);
}
hb_glyph_info_t *pinfo = &out_info[out_len];
for (unsigned int i = 0; i < num_out; i++)
{
*pinfo = orig_info;
pinfo->codepoint = glyph_data[i];
pinfo++;
}
idx += num_in;
out_len += num_out;
}
void void
hb_buffer_t::output_glyph (hb_codepoint_t glyph_index) hb_buffer_t::output_glyph (hb_codepoint_t glyph_index)
{ {