diff options
Diffstat (limited to 'src/3rdparty/harfbuzz-ng/src/OT/Layout/GSUB/Ligature.hh')
| -rw-r--r-- | src/3rdparty/harfbuzz-ng/src/OT/Layout/GSUB/Ligature.hh | 82 |
1 files changed, 75 insertions, 7 deletions
diff --git a/src/3rdparty/harfbuzz-ng/src/OT/Layout/GSUB/Ligature.hh b/src/3rdparty/harfbuzz-ng/src/OT/Layout/GSUB/Ligature.hh index 0448d925d1..e0ec82a236 100644 --- a/src/3rdparty/harfbuzz-ng/src/OT/Layout/GSUB/Ligature.hh +++ b/src/3rdparty/harfbuzz-ng/src/OT/Layout/GSUB/Ligature.hh @@ -5,18 +5,20 @@ namespace OT { namespace Layout { -namespace GSUB { +namespace GSUB_impl { +template <typename Types> struct Ligature { - protected: - HBGlyphID16 ligGlyph; /* GlyphID of ligature to substitute */ - HeadlessArrayOf<HBGlyphID16> - component; /* Array of component GlyphIDs--start + public: + typename Types::HBGlyphID + ligGlyph; /* GlyphID of ligature to substitute */ + HeadlessArray16Of<typename Types::HBGlyphID> + component; /* Array of component GlyphIDs--start * with the second component--ordered * in writing direction */ public: - DEFINE_SIZE_ARRAY (4, component); + DEFINE_SIZE_ARRAY (Types::size + 2, component); bool sanitize (hb_sanitize_context_t *c) const { @@ -27,6 +29,9 @@ struct Ligature bool intersects (const hb_set_t *glyphs) const { return hb_all (component, glyphs); } + bool intersects_lig_glyph (const hb_set_t *glyphs) const + { return glyphs->has(ligGlyph); } + void closure (hb_closure_context_t *c) const { if (!intersects (c->glyphs)) return; @@ -62,14 +67,40 @@ struct Ligature * as a "ligated" substitution. */ if (unlikely (count == 1)) { + + if (HB_BUFFER_MESSAGE_MORE && c->buffer->messaging ()) + { + c->buffer->sync_so_far (); + c->buffer->message (c->font, + "replacing glyph at %u (ligature substitution)", + c->buffer->idx); + } + c->replace_glyph (ligGlyph); + + if (HB_BUFFER_MESSAGE_MORE && c->buffer->messaging ()) + { + c->buffer->message (c->font, + "replaced glyph at %u (ligature substitution)", + c->buffer->idx - 1u); + } + return_trace (true); } unsigned int total_component_count = 0; + if (unlikely (count > HB_MAX_CONTEXT_LENGTH)) return false; + unsigned match_positions_stack[4]; + unsigned *match_positions = match_positions_stack; + if (unlikely (count > ARRAY_LENGTH (match_positions_stack))) + { + match_positions = (unsigned *) hb_malloc (hb_max (count, 1u) * sizeof (unsigned)); + if (unlikely (!match_positions)) + return_trace (false); + } + unsigned int match_end = 0; - unsigned int match_positions[HB_MAX_CONTEXT_LENGTH]; if (likely (!match_input (c, count, &component[1], @@ -80,9 +111,36 @@ struct Ligature &total_component_count))) { c->buffer->unsafe_to_concat (c->buffer->idx, match_end); + if (match_positions != match_positions_stack) + hb_free (match_positions); return_trace (false); } + unsigned pos = 0; + if (HB_BUFFER_MESSAGE_MORE && c->buffer->messaging ()) + { + unsigned delta = c->buffer->sync_so_far (); + + pos = c->buffer->idx; + + char buf[HB_MAX_CONTEXT_LENGTH * 16] = {0}; + char *p = buf; + + match_end += delta; + for (unsigned i = 0; i < count; i++) + { + match_positions[i] += delta; + if (i) + *p++ = ','; + snprintf (p, sizeof(buf) - (p - buf), "%u", match_positions[i]); + p += strlen(p); + } + + c->buffer->message (c->font, + "ligating glyphs at %s", + buf); + } + ligate_input (c, count, match_positions, @@ -90,6 +148,16 @@ struct Ligature ligGlyph, total_component_count); + if (HB_BUFFER_MESSAGE_MORE && c->buffer->messaging ()) + { + c->buffer->sync_so_far (); + c->buffer->message (c->font, + "ligated glyph at %u", + pos); + } + + if (match_positions != match_positions_stack) + hb_free (match_positions); return_trace (true); } |