diff options
Diffstat (limited to 'src/3rdparty/harfbuzz-ng/src/hb-ot-glyf-table.hh')
| -rw-r--r-- | src/3rdparty/harfbuzz-ng/src/hb-ot-glyf-table.hh | 154 |
1 files changed, 92 insertions, 62 deletions
diff --git a/src/3rdparty/harfbuzz-ng/src/hb-ot-glyf-table.hh b/src/3rdparty/harfbuzz-ng/src/hb-ot-glyf-table.hh index ff7b9b2d25..b4ac688344 100644 --- a/src/3rdparty/harfbuzz-ng/src/hb-ot-glyf-table.hh +++ b/src/3rdparty/harfbuzz-ng/src/hb-ot-glyf-table.hh @@ -93,22 +93,16 @@ struct glyf template<typename Iterator, hb_requires (hb_is_source_of (Iterator, unsigned int))> static bool - _add_loca_and_head (hb_subset_plan_t * plan, Iterator padded_offsets) + _add_loca_and_head (hb_subset_plan_t * plan, Iterator padded_offsets, bool use_short_loca) { - unsigned max_offset = - + padded_offsets - | hb_reduce (hb_add, 0) - ; unsigned num_offsets = padded_offsets.len () + 1; - bool use_short_loca = max_offset < 0x1FFFF; unsigned entry_size = use_short_loca ? 2 : 4; char *loca_prime_data = (char *) hb_calloc (entry_size, num_offsets); if (unlikely (!loca_prime_data)) return false; - DEBUG_MSG (SUBSET, nullptr, "loca entry_size %d num_offsets %d " - "max_offset %d size %d", - entry_size, num_offsets, max_offset, entry_size * num_offsets); + DEBUG_MSG (SUBSET, nullptr, "loca entry_size %d num_offsets %d size %d", + entry_size, num_offsets, entry_size * num_offsets); if (use_short_loca) _write_loca (padded_offsets, 1, hb_array ((HBUINT16 *) loca_prime_data, num_offsets)); @@ -151,11 +145,12 @@ struct glyf template <typename Iterator> bool serialize (hb_serialize_context_t *c, Iterator it, + bool use_short_loca, const hb_subset_plan_t *plan) { TRACE_SERIALIZE (this); unsigned init_len = c->length (); - for (const auto &_ : it) _.serialize (c, plan); + for (const auto &_ : it) _.serialize (c, use_short_loca, plan); /* As a special case when all glyph in the font are empty, add a zero byte * to the table, so that OTS doesn’t reject it, and to make the table work @@ -183,16 +178,28 @@ struct glyf hb_vector_t<SubsetGlyph> glyphs; _populate_subset_glyphs (c->plan, &glyphs); - glyf_prime->serialize (c->serializer, hb_iter (glyphs), c->plan); - auto padded_offsets = + hb_iter (glyphs) | hb_map (&SubsetGlyph::padded_size) ; + unsigned max_offset = + padded_offsets | hb_reduce (hb_add, 0); + bool use_short_loca = max_offset < 0x1FFFF; + + + glyf_prime->serialize (c->serializer, hb_iter (glyphs), use_short_loca, c->plan); + if (!use_short_loca) { + padded_offsets = + + hb_iter (glyphs) + | hb_map (&SubsetGlyph::length) + ; + } + + if (unlikely (c->serializer->in_error ())) return_trace (false); return_trace (c->serializer->check_success (_add_loca_and_head (c->plan, - padded_offsets))); + padded_offsets, + use_short_loca))); } template <typename SubsetGlyph> @@ -200,8 +207,7 @@ struct glyf _populate_subset_glyphs (const hb_subset_plan_t *plan, hb_vector_t<SubsetGlyph> *glyphs /* OUT */) const { - OT::glyf::accelerator_t glyf; - glyf.init (plan->source); + OT::glyf::accelerator_t glyf (plan->source); + hb_range (plan->num_output_glyphs ()) | hb_map ([&] (hb_codepoint_t new_gid) @@ -226,8 +232,6 @@ struct glyf }) | hb_sink (glyphs) ; - - glyf.fini (); } static bool @@ -388,7 +392,7 @@ struct glyf protected: HBUINT16 flags; - HBGlyphID glyphIndex; + HBGlyphID16 glyphIndex; public: DEFINE_SIZE_MIN (4); }; @@ -588,7 +592,7 @@ struct glyf if (unlikely (!header.numberOfContours)) return; unsigned flags_offset = length (instructions_length ()); - if (unlikely (length (flags_offset + 1) > bytes.length)) return; + if (unlikely (flags_offset + 1 > bytes.length)) return; HBUINT8 &first_flag = (HBUINT8 &) StructAtOffset<HBUINT16> (&bytes, flags_offset); first_flag = (uint8_t) first_flag | FLAG_OVERLAP_SIMPLE; @@ -792,10 +796,23 @@ struct glyf hb_array_t<contour_point_t> phantoms = points.sub_array (points.length - PHANTOM_COUNT, PHANTOM_COUNT); { for (unsigned i = 0; i < PHANTOM_COUNT; ++i) phantoms[i].init (); - int h_delta = (int) header->xMin - glyf_accelerator.hmtx->get_side_bearing (gid); - int v_orig = (int) header->yMax + glyf_accelerator.vmtx->get_side_bearing (gid); + int h_delta = (int) header->xMin - + glyf_accelerator.hmtx->get_side_bearing (gid); + int v_orig = (int) header->yMax + +#ifndef HB_NO_VERTICAL + glyf_accelerator.vmtx->get_side_bearing (gid) +#else + 0 +#endif + ; unsigned h_adv = glyf_accelerator.hmtx->get_advance (gid); - unsigned v_adv = glyf_accelerator.vmtx->get_advance (gid); + unsigned v_adv = +#ifndef HB_NO_VERTICAL + glyf_accelerator.vmtx->get_advance (gid) +#else + - font->face->get_upem () +#endif + ; phantoms[PHANTOM_LEFT].x = h_delta; phantoms[PHANTOM_RIGHT].x = h_adv + h_delta; phantoms[PHANTOM_TOP].y = v_orig; @@ -803,8 +820,7 @@ struct glyf } #ifndef HB_NO_VAR - if (unlikely (!glyf_accelerator.gvar->apply_deltas_to_points (gid, font, points.as_array ()))) - return false; + glyf_accelerator.gvar->apply_deltas_to_points (gid, font, points.as_array ()); #endif switch (type) { @@ -900,7 +916,7 @@ struct glyf struct accelerator_t { - void init (hb_face_t *face_) + accelerator_t (hb_face_t *face) { short_offset = false; num_glyphs = 0; @@ -910,29 +926,30 @@ struct glyf gvar = nullptr; #endif hmtx = nullptr; +#ifndef HB_NO_VERTICAL vmtx = nullptr; - face = face_; +#endif const OT::head &head = *face->table.head; if (head.indexToLocFormat > 1 || head.glyphDataFormat > 0) /* Unknown format. Leave num_glyphs=0, that takes care of disabling us. */ return; short_offset = 0 == head.indexToLocFormat; - loca_table = hb_sanitize_context_t ().reference_table<loca> (face); + loca_table = face->table.loca.get_blob (); // Needs no destruct! glyf_table = hb_sanitize_context_t ().reference_table<glyf> (face); #ifndef HB_NO_VAR gvar = face->table.gvar; #endif hmtx = face->table.hmtx; +#ifndef HB_NO_VERTICAL vmtx = face->table.vmtx; +#endif num_glyphs = hb_max (1u, loca_table.get_length () / (short_offset ? 2 : 4)) - 1; num_glyphs = hb_min (num_glyphs, face->get_num_glyphs ()); } - - void fini () + ~accelerator_t () { - loca_table.destroy (); glyf_table.destroy (); } @@ -1037,7 +1054,11 @@ struct glyf success = get_points (font, gid, points_aggregator_t (font, nullptr, phantoms)); if (unlikely (!success)) - return is_vertical ? vmtx->get_advance (gid) : hmtx->get_advance (gid); + return +#ifndef HB_NO_VERTICAL + is_vertical ? vmtx->get_advance (gid) : +#endif + hmtx->get_advance (gid); float result = is_vertical ? phantoms[PHANTOM_TOP].y - phantoms[PHANTOM_BOTTOM].y @@ -1053,7 +1074,11 @@ struct glyf contour_point_t phantoms[PHANTOM_COUNT]; if (unlikely (!get_points (font, gid, points_aggregator_t (font, &extents, phantoms)))) - return is_vertical ? vmtx->get_side_bearing (gid) : hmtx->get_side_bearing (gid); + return +#ifndef HB_NO_VERTICAL + is_vertical ? vmtx->get_side_bearing (gid) : +#endif + hmtx->get_side_bearing (gid); return is_vertical ? ceilf (phantoms[PHANTOM_TOP].y) - extents.y_bearing @@ -1118,18 +1143,17 @@ struct glyf while (it) { auto item = *(it++); - operation_count += + operation_count = add_gid_and_children (item.get_glyph_index (), gids_to_retain, depth, operation_count); } return operation_count; } -#ifdef HB_EXPERIMENTAL_API struct path_builder_t { hb_font_t *font; - draw_helper_t *draw_helper; + hb_draw_session_t *draw_session; struct optional_point_t { @@ -1144,10 +1168,10 @@ struct glyf { return optional_point_t (x + t * (p.x - x), y + t * (p.y - y)); } } first_oncurve, first_offcurve, last_offcurve; - path_builder_t (hb_font_t *font_, draw_helper_t &draw_helper_) + path_builder_t (hb_font_t *font_, hb_draw_session_t &draw_session_) { font = font_; - draw_helper = &draw_helper_; + draw_session = &draw_session_; first_oncurve = first_offcurve = last_offcurve = optional_point_t (); } @@ -1157,10 +1181,6 @@ struct glyf * https://stackoverflow.com/a/20772557 */ void consume_point (const contour_point_t &point) { - /* Skip empty contours */ - if (unlikely (point.is_end_point && !first_oncurve.has_data && !first_offcurve.has_data)) - return; - bool is_on_curve = point.flag & Glyph::FLAG_ON_CURVE; optional_point_t p (point.x, point.y); if (!first_oncurve.has_data) @@ -1168,7 +1188,7 @@ struct glyf if (is_on_curve) { first_oncurve = p; - draw_helper->move_to (font->em_scalef_x (p.x), font->em_scalef_y (p.y)); + draw_session->move_to (font->em_fscalef_x (p.x), font->em_fscalef_y (p.y)); } else { @@ -1177,7 +1197,7 @@ struct glyf optional_point_t mid = first_offcurve.lerp (p, .5f); first_oncurve = mid; last_offcurve = p; - draw_helper->move_to (font->em_scalef_x (mid.x), font->em_scalef_y (mid.y)); + draw_session->move_to (font->em_fscalef_x (mid.x), font->em_fscalef_y (mid.y)); } else first_offcurve = p; @@ -1189,22 +1209,22 @@ struct glyf { if (is_on_curve) { - draw_helper->quadratic_to (font->em_scalef_x (last_offcurve.x), font->em_scalef_y (last_offcurve.y), - font->em_scalef_x (p.x), font->em_scalef_y (p.y)); + draw_session->quadratic_to (font->em_fscalef_x (last_offcurve.x), font->em_fscalef_y (last_offcurve.y), + font->em_fscalef_x (p.x), font->em_fscalef_y (p.y)); last_offcurve = optional_point_t (); } else { optional_point_t mid = last_offcurve.lerp (p, .5f); - draw_helper->quadratic_to (font->em_scalef_x (last_offcurve.x), font->em_scalef_y (last_offcurve.y), - font->em_scalef_x (mid.x), font->em_scalef_y (mid.y)); + draw_session->quadratic_to (font->em_fscalef_x (last_offcurve.x), font->em_fscalef_y (last_offcurve.y), + font->em_fscalef_x (mid.x), font->em_fscalef_y (mid.y)); last_offcurve = p; } } else { if (is_on_curve) - draw_helper->line_to (font->em_scalef_x (p.x), font->em_scalef_y (p.y)); + draw_session->line_to (font->em_fscalef_x (p.x), font->em_fscalef_y (p.y)); else last_offcurve = p; } @@ -1215,24 +1235,30 @@ struct glyf if (first_offcurve.has_data && last_offcurve.has_data) { optional_point_t mid = last_offcurve.lerp (first_offcurve, .5f); - draw_helper->quadratic_to (font->em_scalef_x (last_offcurve.x), font->em_scalef_y (last_offcurve.y), - font->em_scalef_x (mid.x), font->em_scalef_y (mid.y)); + draw_session->quadratic_to (font->em_fscalef_x (last_offcurve.x), font->em_fscalef_y (last_offcurve.y), + font->em_fscalef_x (mid.x), font->em_fscalef_y (mid.y)); last_offcurve = optional_point_t (); /* now check the rest */ } if (first_offcurve.has_data && first_oncurve.has_data) - draw_helper->quadratic_to (font->em_scalef_x (first_offcurve.x), font->em_scalef_y (first_offcurve.y), - font->em_scalef_x (first_oncurve.x), font->em_scalef_y (first_oncurve.y)); + draw_session->quadratic_to (font->em_fscalef_x (first_offcurve.x), font->em_fscalef_y (first_offcurve.y), + font->em_fscalef_x (first_oncurve.x), font->em_fscalef_y (first_oncurve.y)); else if (last_offcurve.has_data && first_oncurve.has_data) - draw_helper->quadratic_to (font->em_scalef_x (last_offcurve.x), font->em_scalef_y (last_offcurve.y), - font->em_scalef_x (first_oncurve.x), font->em_scalef_y (first_oncurve.y)); + draw_session->quadratic_to (font->em_fscalef_x (last_offcurve.x), font->em_fscalef_y (last_offcurve.y), + font->em_fscalef_x (first_oncurve.x), font->em_fscalef_y (first_oncurve.y)); else if (first_oncurve.has_data) - draw_helper->line_to (font->em_scalef_x (first_oncurve.x), font->em_scalef_y (first_oncurve.y)); + draw_session->line_to (font->em_fscalef_x (first_oncurve.x), font->em_fscalef_y (first_oncurve.y)); + else if (first_offcurve.has_data) + { + float x = font->em_fscalef_x (first_offcurve.x), y = font->em_fscalef_x (first_offcurve.y); + draw_session->move_to (x, y); + draw_session->quadratic_to (x, y, x, y); + } /* Getting ready for the next contour */ first_oncurve = first_offcurve = last_offcurve = optional_point_t (); - draw_helper->end_path (); + draw_session->close_path (); } } void points_end () {} @@ -1242,22 +1268,22 @@ struct glyf }; bool - get_path (hb_font_t *font, hb_codepoint_t gid, draw_helper_t &draw_helper) const - { return get_points (font, gid, path_builder_t (font, draw_helper)); } -#endif + get_path (hb_font_t *font, hb_codepoint_t gid, hb_draw_session_t &draw_session) const + { return get_points (font, gid, path_builder_t (font, draw_session)); } #ifndef HB_NO_VAR const gvar_accelerator_t *gvar; #endif const hmtx_accelerator_t *hmtx; +#ifndef HB_NO_VERTICAL const vmtx_accelerator_t *vmtx; +#endif private: bool short_offset; unsigned int num_glyphs; hb_blob_ptr_t<loca> loca_table; hb_blob_ptr_t<glyf> glyf_table; - hb_face_t *face; }; struct SubsetGlyph @@ -1269,13 +1295,14 @@ struct glyf hb_bytes_t dest_end; /* region of source_glyph to copy second */ bool serialize (hb_serialize_context_t *c, + bool use_short_loca, const hb_subset_plan_t *plan) const { TRACE_SERIALIZE (this); hb_bytes_t dest_glyph = dest_start.copy (c); dest_glyph = hb_bytes_t (&dest_glyph, dest_glyph.length + dest_end.copy (c).length); - unsigned int pad_length = padding (); + unsigned int pad_length = use_short_loca ? padding () : 0; DEBUG_MSG (SUBSET, nullptr, "serialize %d byte glyph, width %d pad %d", dest_glyph.length, dest_glyph.length + pad_length, pad_length); HBUINT8 pad; @@ -1323,7 +1350,10 @@ struct glyf * defining it _MIN instead. */ }; -struct glyf_accelerator_t : glyf::accelerator_t {}; +struct glyf_accelerator_t : glyf::accelerator_t { + glyf_accelerator_t (hb_face_t *face) : glyf::accelerator_t (face) {} +}; + } /* namespace OT */ |