diff options
Diffstat (limited to 'src/3rdparty/harfbuzz-ng/src/OT/glyf/Glyph.hh')
-rw-r--r-- | src/3rdparty/harfbuzz-ng/src/OT/glyf/Glyph.hh | 436 |
1 files changed, 328 insertions, 108 deletions
diff --git a/src/3rdparty/harfbuzz-ng/src/OT/glyf/Glyph.hh b/src/3rdparty/harfbuzz-ng/src/OT/glyf/Glyph.hh index b7215b0170..69a0b625c7 100644 --- a/src/3rdparty/harfbuzz-ng/src/OT/glyf/Glyph.hh +++ b/src/3rdparty/harfbuzz-ng/src/OT/glyf/Glyph.hh @@ -18,11 +18,6 @@ struct glyf_accelerator_t; namespace glyf_impl { -#ifndef HB_GLYF_MAX_POINTS -#define HB_GLYF_MAX_POINTS 10000 -#endif - - enum phantom_point_index_t { PHANTOM_LEFT = 0, @@ -34,7 +29,14 @@ enum phantom_point_index_t struct Glyph { - enum glyph_type_t { EMPTY, SIMPLE, COMPOSITE, VAR_COMPOSITE }; + enum glyph_type_t { + EMPTY, + SIMPLE, + COMPOSITE, +#ifndef HB_NO_VAR_COMPOSITES + VAR_COMPOSITE, +#endif + }; public: composite_iter_t get_composite_iterator () const @@ -44,15 +46,23 @@ struct Glyph } var_composite_iter_t get_var_composite_iterator () const { +#ifndef HB_NO_VAR_COMPOSITES if (type != VAR_COMPOSITE) return var_composite_iter_t (); return VarCompositeGlyph (*header, bytes).iter (); +#else + return var_composite_iter_t (); +#endif } const hb_bytes_t trim_padding () const { switch (type) { +#ifndef HB_NO_VAR_COMPOSITES + case VAR_COMPOSITE: return VarCompositeGlyph (*header, bytes).trim_padding (); +#endif case COMPOSITE: return CompositeGlyph (*header, bytes).trim_padding (); case SIMPLE: return SimpleGlyph (*header, bytes).trim_padding (); + case EMPTY: return bytes; default: return bytes; } } @@ -60,53 +70,134 @@ struct Glyph void drop_hints () { switch (type) { +#ifndef HB_NO_VAR_COMPOSITES + case VAR_COMPOSITE: return; // No hinting +#endif case COMPOSITE: CompositeGlyph (*header, bytes).drop_hints (); return; case SIMPLE: SimpleGlyph (*header, bytes).drop_hints (); return; - default: return; + case EMPTY: return; } } void set_overlaps_flag () { switch (type) { +#ifndef HB_NO_VAR_COMPOSITES + case VAR_COMPOSITE: return; // No overlaps flag +#endif case COMPOSITE: CompositeGlyph (*header, bytes).set_overlaps_flag (); return; case SIMPLE: SimpleGlyph (*header, bytes).set_overlaps_flag (); return; - default: return; + case EMPTY: return; } } void drop_hints_bytes (hb_bytes_t &dest_start, hb_bytes_t &dest_end) const { switch (type) { +#ifndef HB_NO_VAR_COMPOSITES + case VAR_COMPOSITE: return; // No hinting +#endif case COMPOSITE: CompositeGlyph (*header, bytes).drop_hints_bytes (dest_start); return; case SIMPLE: SimpleGlyph (*header, bytes).drop_hints_bytes (dest_start, dest_end); return; - default: return; + case EMPTY: return; } } + bool is_composite () const + { return type == COMPOSITE; } + + bool get_all_points_without_var (const hb_face_t *face, + contour_point_vector_t &points /* OUT */) const + { + switch (type) { + case SIMPLE: + if (unlikely (!SimpleGlyph (*header, bytes).get_contour_points (points))) + return false; + break; + case COMPOSITE: + { + for (auto &item : get_composite_iterator ()) + if (unlikely (!item.get_points (points))) return false; + break; + } +#ifndef HB_NO_VAR_COMPOSITES + case VAR_COMPOSITE: + { + for (auto &item : get_var_composite_iterator ()) + if (unlikely (!item.get_points (points))) return false; + break; + } +#endif + case EMPTY: + break; + } + + /* Init phantom points */ + if (unlikely (!points.resize (points.length + PHANTOM_COUNT))) return false; + hb_array_t<contour_point_t> phantoms = points.as_array ().sub_array (points.length - PHANTOM_COUNT, PHANTOM_COUNT); + { + int lsb = 0; + int h_delta = face->table.hmtx->get_leading_bearing_without_var_unscaled (gid, &lsb) ? + (int) header->xMin - lsb : 0; + HB_UNUSED int tsb = 0; + int v_orig = (int) header->yMax + +#ifndef HB_NO_VERTICAL + ((void) face->table.vmtx->get_leading_bearing_without_var_unscaled (gid, &tsb), tsb) +#else + 0 +#endif + ; + unsigned h_adv = face->table.hmtx->get_advance_without_var_unscaled (gid); + unsigned v_adv = +#ifndef HB_NO_VERTICAL + face->table.vmtx->get_advance_without_var_unscaled (gid) +#else + - face->get_upem () +#endif + ; + phantoms[PHANTOM_LEFT].x = h_delta; + phantoms[PHANTOM_RIGHT].x = (int) h_adv + h_delta; + phantoms[PHANTOM_TOP].y = v_orig; + phantoms[PHANTOM_BOTTOM].y = v_orig - (int) v_adv; + } + return true; + } + void update_mtx (const hb_subset_plan_t *plan, - int xMin, int yMax, + int xMin, int xMax, + int yMin, int yMax, const contour_point_vector_t &all_points) const { hb_codepoint_t new_gid = 0; if (!plan->new_gid_for_old_gid (gid, &new_gid)) return; + if (type != EMPTY) + { + plan->bounds_width_vec[new_gid] = xMax - xMin; + plan->bounds_height_vec[new_gid] = yMax - yMin; + } + unsigned len = all_points.length; float leftSideX = all_points[len - 4].x; float rightSideX = all_points[len - 3].x; float topSideY = all_points[len - 2].y; float bottomSideY = all_points[len - 1].y; - int hori_aw = roundf (rightSideX - leftSideX); + uint32_t hash = hb_hash (new_gid); + + signed hori_aw = roundf (rightSideX - leftSideX); if (hori_aw < 0) hori_aw = 0; int lsb = roundf (xMin - leftSideX); - plan->hmtx_map->set (new_gid, hb_pair (hori_aw, lsb)); + plan->hmtx_map.set_with_hash (new_gid, hash, hb_pair ((unsigned) hori_aw, lsb)); + //flag value should be computed using non-empty glyphs + if (type != EMPTY && lsb != xMin) + plan->head_maxp_info.allXMinIsLsb = false; - int vert_aw = roundf (topSideY - bottomSideY); + signed vert_aw = roundf (topSideY - bottomSideY); if (vert_aw < 0) vert_aw = 0; int tsb = roundf (topSideY - yMax); - plan->vmtx_map->set (new_gid, hb_pair (vert_aw, tsb)); + plan->vmtx_map.set_with_hash (new_gid, hash, hb_pair ((unsigned) vert_aw, tsb)); } bool compile_header_bytes (const hb_subset_plan_t *plan, @@ -114,7 +205,7 @@ struct Glyph hb_bytes_t &dest_bytes /* OUT */) const { GlyphHeader *glyph_header = nullptr; - if (type != EMPTY && all_points.length > 4) + if (!plan->pinned_at_default && type != EMPTY && all_points.length >= 4) { glyph_header = (GlyphHeader *) hb_calloc (1, GlyphHeader::static_size); if (unlikely (!glyph_header)) return false; @@ -126,30 +217,49 @@ struct Glyph { xMin = xMax = all_points[0].x; yMin = yMax = all_points[0].y; + + unsigned count = all_points.length - 4; + for (unsigned i = 1; i < count; i++) + { + float x = all_points[i].x; + float y = all_points[i].y; + xMin = hb_min (xMin, x); + xMax = hb_max (xMax, x); + yMin = hb_min (yMin, y); + yMax = hb_max (yMax, y); + } } - for (unsigned i = 1; i < all_points.length - 4; i++) + + // These are destined for storage in a 16 bit field to clamp the values to + // fit into a 16 bit signed integer. + int rounded_xMin = hb_clamp (roundf (xMin), -32768.0f, 32767.0f); + int rounded_xMax = hb_clamp (roundf (xMax), -32768.0f, 32767.0f); + int rounded_yMin = hb_clamp (roundf (yMin), -32768.0f, 32767.0f); + int rounded_yMax = hb_clamp (roundf (yMax), -32768.0f, 32767.0f); + + update_mtx (plan, rounded_xMin, rounded_xMax, rounded_yMin, rounded_yMax, all_points); + + if (type != EMPTY) { - float x = all_points[i].x; - float y = all_points[i].y; - xMin = hb_min (xMin, x); - xMax = hb_max (xMax, x); - yMin = hb_min (yMin, y); - yMax = hb_max (yMax, y); + plan->head_maxp_info.xMin = hb_min (plan->head_maxp_info.xMin, rounded_xMin); + plan->head_maxp_info.yMin = hb_min (plan->head_maxp_info.yMin, rounded_yMin); + plan->head_maxp_info.xMax = hb_max (plan->head_maxp_info.xMax, rounded_xMax); + plan->head_maxp_info.yMax = hb_max (plan->head_maxp_info.yMax, rounded_yMax); } - update_mtx (plan, roundf (xMin), roundf (yMax), all_points); - - /*for empty glyphs: all_points only include phantom points. - *just update metrics and then return */ + /* when pinned at default, no need to compile glyph header + * and for empty glyphs: all_points only include phantom points. + * just update metrics and then return */ if (!glyph_header) return true; glyph_header->numberOfContours = header->numberOfContours; - glyph_header->xMin = roundf (xMin); - glyph_header->yMin = roundf (yMin); - glyph_header->xMax = roundf (xMax); - glyph_header->yMax = roundf (yMax); + + glyph_header->xMin = rounded_xMin; + glyph_header->yMin = rounded_yMin; + glyph_header->xMax = rounded_xMax; + glyph_header->yMax = rounded_yMax; dest_bytes = hb_bytes_t ((const char *)glyph_header, GlyphHeader::static_size); return true; @@ -161,35 +271,64 @@ struct Glyph hb_bytes_t &dest_start, /* IN/OUT */ hb_bytes_t &dest_end /* OUT */) { - contour_point_vector_t all_points, deltas; - if (!get_points (font, glyf, all_points, &deltas, false, false)) + contour_point_vector_t all_points, points_with_deltas; + unsigned composite_contours = 0; + head_maxp_info_t *head_maxp_info_p = &plan->head_maxp_info; + unsigned *composite_contours_p = &composite_contours; + + // don't compute head/maxp values when glyph has no contours(type is EMPTY) + // also ignore .notdef glyph when --notdef-outline is not enabled + if (type == EMPTY || + (gid == 0 && !(plan->flags & HB_SUBSET_FLAGS_NOTDEF_OUTLINE))) + { + head_maxp_info_p = nullptr; + composite_contours_p = nullptr; + } + + if (!get_points (font, glyf, all_points, &points_with_deltas, head_maxp_info_p, composite_contours_p, false, false)) return false; // .notdef, set type to empty so we only update metrics and don't compile bytes for // it if (gid == 0 && !(plan->flags & HB_SUBSET_FLAGS_NOTDEF_OUTLINE)) + { type = EMPTY; - - switch (type) { - case COMPOSITE: - if (!CompositeGlyph (*header, bytes).compile_bytes_with_deltas (dest_start, - deltas, - dest_end)) - return false; - break; - case SIMPLE: - if (!SimpleGlyph (*header, bytes).compile_bytes_with_deltas (all_points, - plan->flags & HB_SUBSET_FLAGS_NO_HINTING, - dest_end)) - return false; - break; - default: - /* set empty bytes for empty glyph - * do not use source glyph's pointers */ dest_start = hb_bytes_t (); dest_end = hb_bytes_t (); - break; + } + + //dont compile bytes when pinned at default, just recalculate bounds + if (!plan->pinned_at_default) + { + switch (type) + { +#ifndef HB_NO_VAR_COMPOSITES + case VAR_COMPOSITE: + // TODO + dest_end = hb_bytes_t (); + break; +#endif + + case COMPOSITE: + if (!CompositeGlyph (*header, bytes).compile_bytes_with_deltas (dest_start, + points_with_deltas, + dest_end)) + return false; + break; + case SIMPLE: + if (!SimpleGlyph (*header, bytes).compile_bytes_with_deltas (all_points, + plan->flags & HB_SUBSET_FLAGS_NO_HINTING, + dest_end)) + return false; + break; + case EMPTY: + /* set empty bytes for empty glyph + * do not use source glyph's pointers */ + dest_start = hb_bytes_t (); + dest_end = hb_bytes_t (); + break; + } } if (!compile_header_bytes (plan, all_points, dest_start)) @@ -207,33 +346,52 @@ struct Glyph template <typename accelerator_t> bool get_points (hb_font_t *font, const accelerator_t &glyf_accelerator, contour_point_vector_t &all_points /* OUT */, - contour_point_vector_t *deltas = nullptr, /* OUT */ + contour_point_vector_t *points_with_deltas = nullptr, /* OUT */ + head_maxp_info_t * head_maxp_info = nullptr, /* OUT */ + unsigned *composite_contours = nullptr, /* OUT */ bool shift_points_hori = true, bool use_my_metrics = true, bool phantom_only = false, hb_array_t<int> coords = hb_array_t<int> (), - unsigned int depth = 0) const + hb_map_t *current_glyphs = nullptr, + unsigned int depth = 0, + unsigned *edge_count = nullptr) const { if (unlikely (depth > HB_MAX_NESTING_LEVEL)) return false; + unsigned stack_edge_count = 0; + if (!edge_count) edge_count = &stack_edge_count; + if (unlikely (*edge_count > HB_GLYF_MAX_EDGE_COUNT)) return false; + (*edge_count)++; + + hb_map_t current_glyphs_stack; + if (current_glyphs == nullptr) + current_glyphs = ¤t_glyphs_stack; + + if (head_maxp_info) + { + head_maxp_info->maxComponentDepth = hb_max (head_maxp_info->maxComponentDepth, depth); + } if (!coords) coords = hb_array (font->coords, font->num_coords); contour_point_vector_t stack_points; - bool inplace = type == SIMPLE && all_points.length == 0; - /* Load into all_points if it's empty, as an optimization. */ - contour_point_vector_t &points = inplace ? all_points : stack_points; + contour_point_vector_t &points = type == SIMPLE ? all_points : stack_points; + unsigned old_length = points.length; switch (type) { case SIMPLE: - if (unlikely (!SimpleGlyph (*header, bytes).get_contour_points (points, phantom_only))) + if (depth == 0 && head_maxp_info) + head_maxp_info->maxContours = hb_max (head_maxp_info->maxContours, (unsigned) header->numberOfContours); + if (depth > 0 && composite_contours) + *composite_contours += (unsigned) header->numberOfContours; + if (unlikely (!SimpleGlyph (*header, bytes).get_contour_points (all_points, phantom_only))) return false; break; case COMPOSITE: { - /* pseudo component points for each component in composite glyph */ - unsigned num_points = hb_len (CompositeGlyph (*header, bytes).iter ()); - if (unlikely (!points.resize (num_points))) return false; + for (auto &item : get_composite_iterator ()) + if (unlikely (!item.get_points (points))) return false; break; } #ifndef HB_NO_VAR_COMPOSITES @@ -241,9 +399,10 @@ struct Glyph { for (auto &item : get_var_composite_iterator ()) if (unlikely (!item.get_points (points))) return false; + break; } #endif - default: + case EMPTY: break; } @@ -271,71 +430,84 @@ struct Glyph #endif ; phantoms[PHANTOM_LEFT].x = h_delta; - phantoms[PHANTOM_RIGHT].x = h_adv + h_delta; + phantoms[PHANTOM_RIGHT].x = (int) h_adv + h_delta; phantoms[PHANTOM_TOP].y = v_orig; phantoms[PHANTOM_BOTTOM].y = v_orig - (int) v_adv; } - if (deltas != nullptr && depth == 0 && type == COMPOSITE) - { - if (unlikely (!deltas->resize (points.length))) return false; - deltas->copy_vector (points); - } - #ifndef HB_NO_VAR - glyf_accelerator.gvar->apply_deltas_to_points (gid, - coords, - points.as_array ()); + if (coords) + glyf_accelerator.gvar->apply_deltas_to_points (gid, + coords, + points.as_array ().sub_array (old_length), + phantom_only && type == SIMPLE); #endif // mainly used by CompositeGlyph calculating new X/Y offset value so no need to extend it // with child glyphs' points - if (deltas != nullptr && depth == 0 && type == COMPOSITE) + if (points_with_deltas != nullptr && depth == 0 && type == COMPOSITE) { - for (unsigned i = 0 ; i < points.length; i++) - { - deltas->arrayZ[i].x = points.arrayZ[i].x - deltas->arrayZ[i].x; - deltas->arrayZ[i].y = points.arrayZ[i].y - deltas->arrayZ[i].y; - } + if (unlikely (!points_with_deltas->resize (points.length))) return false; + *points_with_deltas = points; } switch (type) { case SIMPLE: - if (!inplace) - all_points.extend (points.as_array ()); + if (depth == 0 && head_maxp_info) + head_maxp_info->maxPoints = hb_max (head_maxp_info->maxPoints, all_points.length - old_length - 4); break; case COMPOSITE: { - contour_point_vector_t comp_points; unsigned int comp_index = 0; for (auto &item : get_composite_iterator ()) { - comp_points.reset (); + hb_codepoint_t item_gid = item.get_gid (); - if (unlikely (!glyf_accelerator.glyph_for_gid (item.get_gid ()) + if (unlikely (current_glyphs->has (item_gid))) + continue; + + current_glyphs->add (item_gid); + + unsigned old_count = all_points.length; + + if (unlikely ((!phantom_only || (use_my_metrics && item.is_use_my_metrics ())) && + !glyf_accelerator.glyph_for_gid (item_gid) .get_points (font, glyf_accelerator, - comp_points, - deltas, + all_points, + points_with_deltas, + head_maxp_info, + composite_contours, shift_points_hori, use_my_metrics, phantom_only, coords, - depth + 1))) + current_glyphs, + depth + 1, + edge_count))) + { + current_glyphs->del (item_gid); return false; + } + + auto comp_points = all_points.as_array ().sub_array (old_count); /* Copy phantom points from component if USE_MY_METRICS flag set */ if (use_my_metrics && item.is_use_my_metrics ()) for (unsigned int i = 0; i < PHANTOM_COUNT; i++) phantoms[i] = comp_points[comp_points.length - PHANTOM_COUNT + i]; - /* Apply component transformation & translation */ - item.transform_points (comp_points); + if (comp_points) // Empty in case of phantom_only + { + float matrix[4]; + contour_point_t default_trans; + item.get_transformation (matrix, default_trans); - /* Apply translation from gvar */ - comp_points.translate (points[comp_index]); + /* Apply component transformation & translation (with deltas applied) */ + item.transform_points (comp_points, matrix, points[comp_index]); + } - if (item.is_anchored ()) + if (item.is_anchored () && !phantom_only) { unsigned int p1, p2; item.get_anchor_points (p1, p2); @@ -345,65 +517,107 @@ struct Glyph delta.init (all_points[p1].x - comp_points[p2].x, all_points[p1].y - comp_points[p2].y); - comp_points.translate (delta); + item.translate (delta, comp_points); } } - all_points.extend (comp_points.as_array ().sub_array (0, comp_points.length - PHANTOM_COUNT)); + all_points.resize (all_points.length - PHANTOM_COUNT); if (all_points.length > HB_GLYF_MAX_POINTS) + { + current_glyphs->del (item_gid); return false; + } comp_index++; + current_glyphs->del (item_gid); } + if (head_maxp_info && depth == 0) + { + if (composite_contours) + head_maxp_info->maxCompositeContours = hb_max (head_maxp_info->maxCompositeContours, *composite_contours); + head_maxp_info->maxCompositePoints = hb_max (head_maxp_info->maxCompositePoints, all_points.length); + head_maxp_info->maxComponentElements = hb_max (head_maxp_info->maxComponentElements, comp_index); + } all_points.extend (phantoms); } break; #ifndef HB_NO_VAR_COMPOSITES case VAR_COMPOSITE: { - contour_point_vector_t comp_points; hb_array_t<contour_point_t> points_left = points.as_array (); for (auto &item : get_var_composite_iterator ()) { - hb_array_t<contour_point_t> record_points = points_left.sub_array (0, item.get_num_points ()); + hb_codepoint_t item_gid = item.get_gid (); - comp_points.reset (); + if (unlikely (current_glyphs->has (item_gid))) + continue; - coord_setter_t coord_setter (coords); + current_glyphs->add (item_gid); + + unsigned item_num_points = item.get_num_points (); + hb_array_t<contour_point_t> record_points = points_left.sub_array (0, item_num_points); + assert (record_points.length == item_num_points); + + auto component_coords = coords; + /* Copying coords is expensive; so we have put an arbitrary + * limit on the max number of coords for now. */ + if (item.is_reset_unspecified_axes () || + coords.length > HB_GLYF_VAR_COMPOSITE_MAX_AXES) + component_coords = hb_array<int> (); + + coord_setter_t coord_setter (component_coords); item.set_variations (coord_setter, record_points); - if (unlikely (!glyf_accelerator.glyph_for_gid (item.get_gid ()) + unsigned old_count = all_points.length; + + if (unlikely ((!phantom_only || (use_my_metrics && item.is_use_my_metrics ())) && + !glyf_accelerator.glyph_for_gid (item_gid) .get_points (font, glyf_accelerator, - comp_points, - deltas, + all_points, + points_with_deltas, + head_maxp_info, + nullptr, shift_points_hori, use_my_metrics, phantom_only, coord_setter.get_coords (), - depth + 1))) + current_glyphs, + depth + 1, + edge_count))) + { + current_glyphs->del (item_gid); return false; + } + + auto comp_points = all_points.as_array ().sub_array (old_count); /* Apply component transformation */ - item.transform_points (record_points, comp_points); + if (comp_points) // Empty in case of phantom_only + item.transform_points (record_points, comp_points); /* Copy phantom points from component if USE_MY_METRICS flag set */ if (use_my_metrics && item.is_use_my_metrics ()) for (unsigned int i = 0; i < PHANTOM_COUNT; i++) phantoms[i] = comp_points[comp_points.length - PHANTOM_COUNT + i]; - all_points.extend (comp_points.as_array ().sub_array (0, comp_points.length - PHANTOM_COUNT)); + all_points.resize (all_points.length - PHANTOM_COUNT); if (all_points.length > HB_GLYF_MAX_POINTS) + { + current_glyphs->del (item_gid); return false; + } + + points_left += item_num_points; - points_left += item.get_num_points (); + current_glyphs->del (item_gid); } all_points.extend (phantoms); } break; #endif - default: + case EMPTY: all_points.extend (phantoms); break; } @@ -413,9 +627,10 @@ struct Glyph /* Undocumented rasterizer behavior: * Shift points horizontally by the updated left side bearing */ - contour_point_t delta; - delta.init (-phantoms[PHANTOM_LEFT].x, 0.f); - if (delta.x) all_points.translate (delta); + int v = -phantoms[PHANTOM_LEFT].x; + if (v) + for (auto &point : all_points) + point.x += v; } return !all_points.in_error (); @@ -429,6 +644,8 @@ struct Glyph } hb_bytes_t get_bytes () const { return bytes; } + glyph_type_t get_type () const { return type; } + const GlyphHeader *get_header () const { return header; } Glyph () : bytes (), header (bytes.as<GlyphHeader> ()), @@ -444,15 +661,18 @@ struct Glyph int num_contours = header->numberOfContours; if (unlikely (num_contours == 0)) type = EMPTY; else if (num_contours > 0) type = SIMPLE; + else if (num_contours == -1) type = COMPOSITE; +#ifndef HB_NO_VAR_COMPOSITES else if (num_contours == -2) type = VAR_COMPOSITE; - else type = COMPOSITE; /* negative numbers */ +#endif + else type = EMPTY; // Spec deviation; Spec says COMPOSITE, but not seen in the wild. } protected: hb_bytes_t bytes; const GlyphHeader *header; hb_codepoint_t gid; - unsigned type; + glyph_type_t type; }; |