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-rw-r--r--gfx/harfbuzz/src/OT/glyf/CompositeGlyph.hh423
-rw-r--r--gfx/harfbuzz/src/OT/glyf/Glyph.hh577
-rw-r--r--gfx/harfbuzz/src/OT/glyf/GlyphHeader.hh52
-rw-r--r--gfx/harfbuzz/src/OT/glyf/SimpleGlyph.hh348
-rw-r--r--gfx/harfbuzz/src/OT/glyf/SubsetGlyph.hh152
-rw-r--r--gfx/harfbuzz/src/OT/glyf/VarCompositeGlyph.hh401
-rw-r--r--gfx/harfbuzz/src/OT/glyf/composite-iter.hh68
-rw-r--r--gfx/harfbuzz/src/OT/glyf/coord-setter.hh34
-rw-r--r--gfx/harfbuzz/src/OT/glyf/glyf-helpers.hh104
-rw-r--r--gfx/harfbuzz/src/OT/glyf/glyf.hh504
-rw-r--r--gfx/harfbuzz/src/OT/glyf/loca.hh43
-rw-r--r--gfx/harfbuzz/src/OT/glyf/path-builder.hh189
12 files changed, 2895 insertions, 0 deletions
diff --git a/gfx/harfbuzz/src/OT/glyf/CompositeGlyph.hh b/gfx/harfbuzz/src/OT/glyf/CompositeGlyph.hh
new file mode 100644
index 0000000000..d81fadf7c8
--- /dev/null
+++ b/gfx/harfbuzz/src/OT/glyf/CompositeGlyph.hh
@@ -0,0 +1,423 @@
+#ifndef OT_GLYF_COMPOSITEGLYPH_HH
+#define OT_GLYF_COMPOSITEGLYPH_HH
+
+
+#include "../../hb-open-type.hh"
+#include "composite-iter.hh"
+
+
+namespace OT {
+namespace glyf_impl {
+
+
+struct CompositeGlyphRecord
+{
+ protected:
+ enum composite_glyph_flag_t
+ {
+ ARG_1_AND_2_ARE_WORDS = 0x0001,
+ ARGS_ARE_XY_VALUES = 0x0002,
+ ROUND_XY_TO_GRID = 0x0004,
+ WE_HAVE_A_SCALE = 0x0008,
+ MORE_COMPONENTS = 0x0020,
+ WE_HAVE_AN_X_AND_Y_SCALE = 0x0040,
+ WE_HAVE_A_TWO_BY_TWO = 0x0080,
+ WE_HAVE_INSTRUCTIONS = 0x0100,
+ USE_MY_METRICS = 0x0200,
+ OVERLAP_COMPOUND = 0x0400,
+ SCALED_COMPONENT_OFFSET = 0x0800,
+ UNSCALED_COMPONENT_OFFSET = 0x1000,
+#ifndef HB_NO_BEYOND_64K
+ GID_IS_24BIT = 0x2000
+#endif
+ };
+
+ public:
+ unsigned int get_size () const
+ {
+ unsigned int size = min_size;
+ /* glyphIndex is 24bit instead of 16bit */
+#ifndef HB_NO_BEYOND_64K
+ if (flags & GID_IS_24BIT) size += HBGlyphID24::static_size - HBGlyphID16::static_size;
+#endif
+ /* arg1 and 2 are int16 */
+ if (flags & ARG_1_AND_2_ARE_WORDS) size += 4;
+ /* arg1 and 2 are int8 */
+ else size += 2;
+
+ /* One x 16 bit (scale) */
+ if (flags & WE_HAVE_A_SCALE) size += 2;
+ /* Two x 16 bit (xscale, yscale) */
+ else if (flags & WE_HAVE_AN_X_AND_Y_SCALE) size += 4;
+ /* Four x 16 bit (xscale, scale01, scale10, yscale) */
+ else if (flags & WE_HAVE_A_TWO_BY_TWO) size += 8;
+
+ return size;
+ }
+
+ void drop_instructions_flag () { flags = (uint16_t) flags & ~WE_HAVE_INSTRUCTIONS; }
+ void set_overlaps_flag ()
+ {
+ flags = (uint16_t) flags | OVERLAP_COMPOUND;
+ }
+
+ bool has_instructions () const { return flags & WE_HAVE_INSTRUCTIONS; }
+
+ bool has_more () const { return flags & MORE_COMPONENTS; }
+ bool is_use_my_metrics () const { return flags & USE_MY_METRICS; }
+ bool is_anchored () const { return !(flags & ARGS_ARE_XY_VALUES); }
+ void get_anchor_points (unsigned int &point1, unsigned int &point2) const
+ {
+ const auto *p = &StructAfter<const HBUINT8> (flags);
+#ifndef HB_NO_BEYOND_64K
+ if (flags & GID_IS_24BIT)
+ p += HBGlyphID24::static_size;
+ else
+#endif
+ p += HBGlyphID16::static_size;
+ if (flags & ARG_1_AND_2_ARE_WORDS)
+ {
+ point1 = ((const HBUINT16 *) p)[0];
+ point2 = ((const HBUINT16 *) p)[1];
+ }
+ else
+ {
+ point1 = p[0];
+ point2 = p[1];
+ }
+ }
+
+ static void transform (const float (&matrix)[4],
+ hb_array_t<contour_point_t> points)
+ {
+ auto arrayZ = points.arrayZ;
+ unsigned count = points.length;
+
+ if (matrix[0] != 1.f || matrix[1] != 0.f ||
+ matrix[2] != 0.f || matrix[3] != 1.f)
+ for (unsigned i = 0; i < count; i++)
+ arrayZ[i].transform (matrix);
+ }
+
+ static void translate (const contour_point_t &trans,
+ hb_array_t<contour_point_t> points)
+ {
+ auto arrayZ = points.arrayZ;
+ unsigned count = points.length;
+
+ if (trans.x != 0.f || trans.y != 0.f)
+ for (unsigned i = 0; i < count; i++)
+ arrayZ[i].translate (trans);
+ }
+
+ void transform_points (hb_array_t<contour_point_t> points,
+ const float (&matrix)[4],
+ const contour_point_t &trans) const
+ {
+ if (scaled_offsets ())
+ {
+ translate (trans, points);
+ transform (matrix, points);
+ }
+ else
+ {
+ transform (matrix, points);
+ translate (trans, points);
+ }
+ }
+
+ bool get_points (contour_point_vector_t &points) const
+ {
+ float matrix[4];
+ contour_point_t trans;
+ get_transformation (matrix, trans);
+ points.alloc (points.length + 4); // For phantom points
+ if (unlikely (!points.resize (points.length + 1))) return false;
+ points.arrayZ[points.length - 1] = trans;
+ return true;
+ }
+
+ unsigned compile_with_point (const contour_point_t &point,
+ char *out) const
+ {
+ const HBINT8 *p = &StructAfter<const HBINT8> (flags);
+#ifndef HB_NO_BEYOND_64K
+ if (flags & GID_IS_24BIT)
+ p += HBGlyphID24::static_size;
+ else
+#endif
+ p += HBGlyphID16::static_size;
+
+ unsigned len = get_size ();
+ unsigned len_before_val = (const char *)p - (const char *)this;
+ if (flags & ARG_1_AND_2_ARE_WORDS)
+ {
+ // no overflow, copy value
+ hb_memcpy (out, this, len);
+
+ HBINT16 *o = reinterpret_cast<HBINT16 *> (out + len_before_val);
+ o[0] = roundf (point.x);
+ o[1] = roundf (point.y);
+ }
+ else
+ {
+ int new_x = roundf (point.x);
+ int new_y = roundf (point.y);
+ if (new_x <= 127 && new_x >= -128 &&
+ new_y <= 127 && new_y >= -128)
+ {
+ hb_memcpy (out, this, len);
+ HBINT8 *o = reinterpret_cast<HBINT8 *> (out + len_before_val);
+ o[0] = new_x;
+ o[1] = new_y;
+ }
+ else
+ {
+ // new point value has an int8 overflow
+ hb_memcpy (out, this, len_before_val);
+
+ //update flags
+ CompositeGlyphRecord *o = reinterpret_cast<CompositeGlyphRecord *> (out);
+ o->flags = flags | ARG_1_AND_2_ARE_WORDS;
+ out += len_before_val;
+
+ HBINT16 new_value;
+ new_value = new_x;
+ hb_memcpy (out, &new_value, HBINT16::static_size);
+ out += HBINT16::static_size;
+
+ new_value = new_y;
+ hb_memcpy (out, &new_value, HBINT16::static_size);
+ out += HBINT16::static_size;
+
+ hb_memcpy (out, p+2, len - len_before_val - 2);
+ len += 2;
+ }
+ }
+ return len;
+ }
+
+ protected:
+ bool scaled_offsets () const
+ { return (flags & (SCALED_COMPONENT_OFFSET | UNSCALED_COMPONENT_OFFSET)) == SCALED_COMPONENT_OFFSET; }
+
+ public:
+ bool get_transformation (float (&matrix)[4], contour_point_t &trans) const
+ {
+ matrix[0] = matrix[3] = 1.f;
+ matrix[1] = matrix[2] = 0.f;
+
+ const auto *p = &StructAfter<const HBINT8> (flags);
+#ifndef HB_NO_BEYOND_64K
+ if (flags & GID_IS_24BIT)
+ p += HBGlyphID24::static_size;
+ else
+#endif
+ p += HBGlyphID16::static_size;
+ int tx, ty;
+ if (flags & ARG_1_AND_2_ARE_WORDS)
+ {
+ tx = *(const HBINT16 *) p;
+ p += HBINT16::static_size;
+ ty = *(const HBINT16 *) p;
+ p += HBINT16::static_size;
+ }
+ else
+ {
+ tx = *p++;
+ ty = *p++;
+ }
+ if (is_anchored ()) tx = ty = 0;
+
+ trans.init ((float) tx, (float) ty);
+
+ {
+ const F2DOT14 *points = (const F2DOT14 *) p;
+ if (flags & WE_HAVE_A_SCALE)
+ {
+ matrix[0] = matrix[3] = points[0].to_float ();
+ return true;
+ }
+ else if (flags & WE_HAVE_AN_X_AND_Y_SCALE)
+ {
+ matrix[0] = points[0].to_float ();
+ matrix[3] = points[1].to_float ();
+ return true;
+ }
+ else if (flags & WE_HAVE_A_TWO_BY_TWO)
+ {
+ matrix[0] = points[0].to_float ();
+ matrix[1] = points[1].to_float ();
+ matrix[2] = points[2].to_float ();
+ matrix[3] = points[3].to_float ();
+ return true;
+ }
+ }
+ return tx || ty;
+ }
+
+ hb_codepoint_t get_gid () const
+ {
+#ifndef HB_NO_BEYOND_64K
+ if (flags & GID_IS_24BIT)
+ return StructAfter<const HBGlyphID24> (flags);
+ else
+#endif
+ return StructAfter<const HBGlyphID16> (flags);
+ }
+ void set_gid (hb_codepoint_t gid)
+ {
+#ifndef HB_NO_BEYOND_64K
+ if (flags & GID_IS_24BIT)
+ StructAfter<HBGlyphID24> (flags) = gid;
+ else
+#endif
+ /* TODO assert? */
+ StructAfter<HBGlyphID16> (flags) = gid;
+ }
+
+#ifndef HB_NO_BEYOND_64K
+ void lower_gid_24_to_16 ()
+ {
+ hb_codepoint_t gid = get_gid ();
+ if (!(flags & GID_IS_24BIT) || gid > 0xFFFFu)
+ return;
+
+ /* Lower the flag and move the rest of the struct down. */
+
+ unsigned size = get_size ();
+ char *end = (char *) this + size;
+ char *p = &StructAfter<char> (flags);
+ p += HBGlyphID24::static_size;
+
+ flags = flags & ~GID_IS_24BIT;
+ set_gid (gid);
+
+ memmove (p - HBGlyphID24::static_size + HBGlyphID16::static_size, p, end - p);
+ }
+#endif
+
+ protected:
+ HBUINT16 flags;
+ HBUINT24 pad;
+ public:
+ DEFINE_SIZE_MIN (4);
+};
+
+using composite_iter_t = composite_iter_tmpl<CompositeGlyphRecord>;
+
+struct CompositeGlyph
+{
+ const GlyphHeader &header;
+ hb_bytes_t bytes;
+ CompositeGlyph (const GlyphHeader &header_, hb_bytes_t bytes_) :
+ header (header_), bytes (bytes_) {}
+
+ composite_iter_t iter () const
+ { return composite_iter_t (bytes, &StructAfter<CompositeGlyphRecord, GlyphHeader> (header)); }
+
+ unsigned int instructions_length (hb_bytes_t bytes) const
+ {
+ unsigned int start = bytes.length;
+ unsigned int end = bytes.length;
+ const CompositeGlyphRecord *last = nullptr;
+ for (auto &item : iter ())
+ last = &item;
+ if (unlikely (!last)) return 0;
+
+ if (last->has_instructions ())
+ start = (char *) last - &bytes + last->get_size ();
+ if (unlikely (start > end)) return 0;
+ return end - start;
+ }
+
+ /* Trimming for composites not implemented.
+ * If removing hints it falls out of that. */
+ const hb_bytes_t trim_padding () const { return bytes; }
+
+ void drop_hints ()
+ {
+ for (const auto &_ : iter ())
+ const_cast<CompositeGlyphRecord &> (_).drop_instructions_flag ();
+ }
+
+ /* Chop instructions off the end */
+ void drop_hints_bytes (hb_bytes_t &dest_start) const
+ { dest_start = bytes.sub_array (0, bytes.length - instructions_length (bytes)); }
+
+ void set_overlaps_flag ()
+ {
+ CompositeGlyphRecord& glyph_chain = const_cast<CompositeGlyphRecord &> (
+ StructAfter<CompositeGlyphRecord, GlyphHeader> (header));
+ if (!bytes.check_range(&glyph_chain, CompositeGlyphRecord::min_size))
+ return;
+ glyph_chain.set_overlaps_flag ();
+ }
+
+ bool compile_bytes_with_deltas (const hb_bytes_t &source_bytes,
+ const contour_point_vector_t &points_with_deltas,
+ hb_bytes_t &dest_bytes /* OUT */)
+ {
+ if (source_bytes.length <= GlyphHeader::static_size ||
+ header.numberOfContours != -1)
+ {
+ dest_bytes = hb_bytes_t ();
+ return true;
+ }
+
+ unsigned source_len = source_bytes.length - GlyphHeader::static_size;
+
+ /* try to allocate more memories than source glyph bytes
+ * in case that there might be an overflow for int8 value
+ * and we would need to use int16 instead */
+ char *o = (char *) hb_calloc (source_len * 2, sizeof (char));
+ if (unlikely (!o)) return false;
+
+ const CompositeGlyphRecord *c = reinterpret_cast<const CompositeGlyphRecord *> (source_bytes.arrayZ + GlyphHeader::static_size);
+ auto it = composite_iter_t (hb_bytes_t ((const char *)c, source_len), c);
+
+ char *p = o;
+ unsigned i = 0, source_comp_len = 0;
+ for (const auto &component : it)
+ {
+ /* last 4 points in points_with_deltas are phantom points and should not be included */
+ if (i >= points_with_deltas.length - 4) {
+ free (o);
+ return false;
+ }
+
+ unsigned comp_len = component.get_size ();
+ if (component.is_anchored ())
+ {
+ hb_memcpy (p, &component, comp_len);
+ p += comp_len;
+ }
+ else
+ {
+ unsigned new_len = component.compile_with_point (points_with_deltas[i], p);
+ p += new_len;
+ }
+ i++;
+ source_comp_len += comp_len;
+ }
+
+ //copy instructions if any
+ if (source_len > source_comp_len)
+ {
+ unsigned instr_len = source_len - source_comp_len;
+ hb_memcpy (p, (const char *)c + source_comp_len, instr_len);
+ p += instr_len;
+ }
+
+ unsigned len = p - o;
+ dest_bytes = hb_bytes_t (o, len);
+ return true;
+ }
+};
+
+
+} /* namespace glyf_impl */
+} /* namespace OT */
+
+
+#endif /* OT_GLYF_COMPOSITEGLYPH_HH */
diff --git a/gfx/harfbuzz/src/OT/glyf/Glyph.hh b/gfx/harfbuzz/src/OT/glyf/Glyph.hh
new file mode 100644
index 0000000000..2bd5fe8206
--- /dev/null
+++ b/gfx/harfbuzz/src/OT/glyf/Glyph.hh
@@ -0,0 +1,577 @@
+#ifndef OT_GLYF_GLYPH_HH
+#define OT_GLYF_GLYPH_HH
+
+
+#include "../../hb-open-type.hh"
+
+#include "GlyphHeader.hh"
+#include "SimpleGlyph.hh"
+#include "CompositeGlyph.hh"
+#include "VarCompositeGlyph.hh"
+#include "coord-setter.hh"
+
+
+namespace OT {
+
+struct glyf_accelerator_t;
+
+namespace glyf_impl {
+
+
+enum phantom_point_index_t
+{
+ PHANTOM_LEFT = 0,
+ PHANTOM_RIGHT = 1,
+ PHANTOM_TOP = 2,
+ PHANTOM_BOTTOM = 3,
+ PHANTOM_COUNT = 4
+};
+
+struct Glyph
+{
+ enum glyph_type_t {
+ EMPTY,
+ SIMPLE,
+ COMPOSITE,
+#ifndef HB_NO_VAR_COMPOSITES
+ VAR_COMPOSITE,
+#endif
+ };
+
+ public:
+ composite_iter_t get_composite_iterator () const
+ {
+ if (type != COMPOSITE) return composite_iter_t ();
+ return CompositeGlyph (*header, bytes).iter ();
+ }
+ 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;
+ }
+ }
+
+ 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;
+ 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;
+ 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;
+ case EMPTY: return;
+ }
+ }
+
+ void update_mtx (const hb_subset_plan_t *plan,
+ 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_map.set (new_gid, xMax - xMin);
+ plan->bounds_height_map.set (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;
+
+ 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 ((unsigned) hori_aw, lsb));
+ //flag value should be computed using non-empty glyphs
+ if (type != EMPTY && lsb != xMin)
+ plan->head_maxp_info.allXMinIsLsb = false;
+
+ 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 ((unsigned) vert_aw, tsb));
+ }
+
+ bool compile_header_bytes (const hb_subset_plan_t *plan,
+ const contour_point_vector_t &all_points,
+ hb_bytes_t &dest_bytes /* OUT */) const
+ {
+ GlyphHeader *glyph_header = nullptr;
+ 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;
+ }
+
+ float xMin = 0, xMax = 0;
+ float yMin = 0, yMax = 0;
+ if (all_points.length > 4)
+ {
+ 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);
+ }
+ }
+
+
+ // 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)
+ {
+ 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);
+ }
+
+ /* 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 = 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;
+ }
+
+ bool compile_bytes_with_deltas (const hb_subset_plan_t *plan,
+ hb_font_t *font,
+ const glyf_accelerator_t &glyf,
+ hb_bytes_t &dest_start, /* IN/OUT */
+ hb_bytes_t &dest_end /* OUT */)
+ {
+ 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;
+ dest_start = hb_bytes_t ();
+ dest_end = hb_bytes_t ();
+ }
+
+ //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))
+ {
+ dest_end.fini ();
+ return false;
+ }
+ return true;
+ }
+
+
+ /* Note: Recursively calls itself.
+ * all_points includes phantom points
+ */
+ 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 *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,
+ 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)++;
+
+ 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;
+ contour_point_vector_t &points = type == SIMPLE ? all_points : stack_points;
+ unsigned old_length = points.length;
+
+ switch (type) {
+ case SIMPLE:
+ 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:
+ {
+ 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 = glyf_accelerator.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) glyf_accelerator.vmtx->get_leading_bearing_without_var_unscaled (gid, &tsb), tsb)
+#else
+ 0
+#endif
+ ;
+ unsigned h_adv = glyf_accelerator.hmtx->get_advance_without_var_unscaled (gid);
+ unsigned v_adv =
+#ifndef HB_NO_VERTICAL
+ glyf_accelerator.vmtx->get_advance_without_var_unscaled (gid)
+#else
+ - font->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;
+ }
+
+#ifndef HB_NO_VAR
+ glyf_accelerator.gvar->apply_deltas_to_points (gid,
+ coords,
+ points.as_array ().sub_array (old_length));
+#endif
+
+ // mainly used by CompositeGlyph calculating new X/Y offset value so no need to extend it
+ // with child glyphs' points
+ if (points_with_deltas != nullptr && depth == 0 && type == COMPOSITE)
+ {
+ if (unlikely (!points_with_deltas->resize (points.length))) return false;
+ points_with_deltas->copy_vector (points);
+ }
+
+ switch (type) {
+ case SIMPLE:
+ 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:
+ {
+ unsigned int comp_index = 0;
+ for (auto &item : get_composite_iterator ())
+ {
+ unsigned old_count = all_points.length;
+
+ if (unlikely ((!phantom_only || (use_my_metrics && item.is_use_my_metrics ())) &&
+ !glyf_accelerator.glyph_for_gid (item.get_gid ())
+ .get_points (font,
+ glyf_accelerator,
+ all_points,
+ points_with_deltas,
+ head_maxp_info,
+ composite_contours,
+ shift_points_hori,
+ use_my_metrics,
+ phantom_only,
+ coords,
+ depth + 1,
+ edge_count)))
+ 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];
+
+ float matrix[4];
+ contour_point_t default_trans;
+ item.get_transformation (matrix, default_trans);
+
+ /* Apply component transformation & translation (with deltas applied) */
+ item.transform_points (comp_points, matrix, points[comp_index]);
+
+ if (item.is_anchored ())
+ {
+ unsigned int p1, p2;
+ item.get_anchor_points (p1, p2);
+ if (likely (p1 < all_points.length && p2 < comp_points.length))
+ {
+ contour_point_t delta;
+ delta.init (all_points[p1].x - comp_points[p2].x,
+ all_points[p1].y - comp_points[p2].y);
+
+ item.translate (delta, comp_points);
+ }
+ }
+
+ all_points.resize (all_points.length - PHANTOM_COUNT);
+
+ if (all_points.length > HB_GLYF_MAX_POINTS)
+ return false;
+
+ comp_index++;
+ }
+
+ 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:
+ {
+ hb_array_t<contour_point_t> points_left = points.as_array ();
+ for (auto &item : get_var_composite_iterator ())
+ {
+ 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;
+ if (item.is_reset_unspecified_axes ())
+ component_coords = hb_array<int> ();
+
+ coord_setter_t coord_setter (component_coords);
+ item.set_variations (coord_setter, record_points);
+
+ unsigned old_count = all_points.length;
+
+ if (unlikely ((!phantom_only || (use_my_metrics && item.is_use_my_metrics ())) &&
+ !glyf_accelerator.glyph_for_gid (item.get_gid ())
+ .get_points (font,
+ glyf_accelerator,
+ all_points,
+ points_with_deltas,
+ head_maxp_info,
+ nullptr,
+ shift_points_hori,
+ use_my_metrics,
+ phantom_only,
+ coord_setter.get_coords (),
+ depth + 1,
+ edge_count)))
+ return false;
+
+ auto comp_points = all_points.as_array ().sub_array (old_count);
+
+ /* Apply component transformation */
+ 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.resize (all_points.length - PHANTOM_COUNT);
+
+ if (all_points.length > HB_GLYF_MAX_POINTS)
+ return false;
+
+ points_left += item_num_points;
+ }
+ all_points.extend (phantoms);
+ } break;
+#endif
+ case EMPTY:
+ all_points.extend (phantoms);
+ break;
+ }
+
+ if (depth == 0 && shift_points_hori) /* Apply at top level */
+ {
+ /* Undocumented rasterizer behavior:
+ * Shift points horizontally by the updated left side bearing
+ */
+ int v = -phantoms[PHANTOM_LEFT].x;
+ if (v)
+ for (auto &point : all_points)
+ point.x += v;
+ }
+
+ return !all_points.in_error ();
+ }
+
+ bool get_extents_without_var_scaled (hb_font_t *font, const glyf_accelerator_t &glyf_accelerator,
+ hb_glyph_extents_t *extents) const
+ {
+ if (type == EMPTY) return true; /* Empty glyph; zero extents. */
+ return header->get_extents_without_var_scaled (font, glyf_accelerator, gid, extents);
+ }
+
+ 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> ()),
+ gid (-1),
+ type(EMPTY)
+ {}
+
+ Glyph (hb_bytes_t bytes_,
+ hb_codepoint_t gid_ = (unsigned) -1) : bytes (bytes_),
+ header (bytes.as<GlyphHeader> ()),
+ gid (gid_)
+ {
+ 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;
+#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;
+ glyph_type_t type;
+};
+
+
+} /* namespace glyf_impl */
+} /* namespace OT */
+
+
+#endif /* OT_GLYF_GLYPH_HH */
diff --git a/gfx/harfbuzz/src/OT/glyf/GlyphHeader.hh b/gfx/harfbuzz/src/OT/glyf/GlyphHeader.hh
new file mode 100644
index 0000000000..a43b6691ab
--- /dev/null
+++ b/gfx/harfbuzz/src/OT/glyf/GlyphHeader.hh
@@ -0,0 +1,52 @@
+#ifndef OT_GLYF_GLYPHHEADER_HH
+#define OT_GLYF_GLYPHHEADER_HH
+
+
+#include "../../hb-open-type.hh"
+
+
+namespace OT {
+namespace glyf_impl {
+
+
+struct GlyphHeader
+{
+ bool has_data () const { return numberOfContours; }
+
+ template <typename accelerator_t>
+ bool get_extents_without_var_scaled (hb_font_t *font, const accelerator_t &glyf_accelerator,
+ hb_codepoint_t gid, hb_glyph_extents_t *extents) const
+ {
+ /* Undocumented rasterizer behavior: shift glyph to the left by (lsb - xMin), i.e., xMin = lsb */
+ /* extents->x_bearing = hb_min (glyph_header.xMin, glyph_header.xMax); */
+ int lsb = hb_min (xMin, xMax);
+ (void) glyf_accelerator.hmtx->get_leading_bearing_without_var_unscaled (gid, &lsb);
+ extents->x_bearing = lsb;
+ extents->y_bearing = hb_max (yMin, yMax);
+ extents->width = hb_max (xMin, xMax) - hb_min (xMin, xMax);
+ extents->height = hb_min (yMin, yMax) - hb_max (yMin, yMax);
+
+ font->scale_glyph_extents (extents);
+
+ return true;
+ }
+
+ HBINT16 numberOfContours;
+ /* If the number of contours is
+ * greater than or equal to zero,
+ * this is a simple glyph; if negative,
+ * this is a composite glyph. */
+ FWORD xMin; /* Minimum x for coordinate data. */
+ FWORD yMin; /* Minimum y for coordinate data. */
+ FWORD xMax; /* Maximum x for coordinate data. */
+ FWORD yMax; /* Maximum y for coordinate data. */
+ public:
+ DEFINE_SIZE_STATIC (10);
+};
+
+
+} /* namespace glyf_impl */
+} /* namespace OT */
+
+
+#endif /* OT_GLYF_GLYPHHEADER_HH */
diff --git a/gfx/harfbuzz/src/OT/glyf/SimpleGlyph.hh b/gfx/harfbuzz/src/OT/glyf/SimpleGlyph.hh
new file mode 100644
index 0000000000..555bcee346
--- /dev/null
+++ b/gfx/harfbuzz/src/OT/glyf/SimpleGlyph.hh
@@ -0,0 +1,348 @@
+#ifndef OT_GLYF_SIMPLEGLYPH_HH
+#define OT_GLYF_SIMPLEGLYPH_HH
+
+
+#include "../../hb-open-type.hh"
+
+
+namespace OT {
+namespace glyf_impl {
+
+
+struct SimpleGlyph
+{
+ enum simple_glyph_flag_t
+ {
+ FLAG_ON_CURVE = 0x01,
+ FLAG_X_SHORT = 0x02,
+ FLAG_Y_SHORT = 0x04,
+ FLAG_REPEAT = 0x08,
+ FLAG_X_SAME = 0x10,
+ FLAG_Y_SAME = 0x20,
+ FLAG_OVERLAP_SIMPLE = 0x40,
+ FLAG_CUBIC = 0x80
+ };
+
+ const GlyphHeader &header;
+ hb_bytes_t bytes;
+ SimpleGlyph (const GlyphHeader &header_, hb_bytes_t bytes_) :
+ header (header_), bytes (bytes_) {}
+
+ unsigned int instruction_len_offset () const
+ { return GlyphHeader::static_size + 2 * header.numberOfContours; }
+
+ unsigned int length (unsigned int instruction_len) const
+ { return instruction_len_offset () + 2 + instruction_len; }
+
+ bool has_instructions_length () const
+ {
+ return instruction_len_offset () + 2 <= bytes.length;
+ }
+
+ unsigned int instructions_length () const
+ {
+ unsigned int instruction_length_offset = instruction_len_offset ();
+ if (unlikely (instruction_length_offset + 2 > bytes.length)) return 0;
+
+ const HBUINT16 &instructionLength = StructAtOffset<HBUINT16> (&bytes, instruction_length_offset);
+ /* Out of bounds of the current glyph */
+ if (unlikely (length (instructionLength) > bytes.length)) return 0;
+ return instructionLength;
+ }
+
+ const hb_bytes_t trim_padding () const
+ {
+ /* based on FontTools _g_l_y_f.py::trim */
+ const uint8_t *glyph = (uint8_t*) bytes.arrayZ;
+ const uint8_t *glyph_end = glyph + bytes.length;
+ /* simple glyph w/contours, possibly trimmable */
+ glyph += instruction_len_offset ();
+
+ if (unlikely (glyph + 2 >= glyph_end)) return hb_bytes_t ();
+ unsigned int num_coordinates = StructAtOffset<HBUINT16> (glyph - 2, 0) + 1;
+ unsigned int num_instructions = StructAtOffset<HBUINT16> (glyph, 0);
+
+ glyph += 2 + num_instructions;
+
+ unsigned int coord_bytes = 0;
+ unsigned int coords_with_flags = 0;
+ while (glyph < glyph_end)
+ {
+ uint8_t flag = *glyph;
+ glyph++;
+
+ unsigned int repeat = 1;
+ if (flag & FLAG_REPEAT)
+ {
+ if (unlikely (glyph >= glyph_end)) return hb_bytes_t ();
+ repeat = *glyph + 1;
+ glyph++;
+ }
+
+ unsigned int xBytes, yBytes;
+ xBytes = yBytes = 0;
+ if (flag & FLAG_X_SHORT) xBytes = 1;
+ else if ((flag & FLAG_X_SAME) == 0) xBytes = 2;
+
+ if (flag & FLAG_Y_SHORT) yBytes = 1;
+ else if ((flag & FLAG_Y_SAME) == 0) yBytes = 2;
+
+ coord_bytes += (xBytes + yBytes) * repeat;
+ coords_with_flags += repeat;
+ if (coords_with_flags >= num_coordinates) break;
+ }
+
+ if (unlikely (coords_with_flags != num_coordinates)) return hb_bytes_t ();
+ return bytes.sub_array (0, bytes.length + coord_bytes - (glyph_end - glyph));
+ }
+
+ /* zero instruction length */
+ void drop_hints ()
+ {
+ if (!has_instructions_length ()) return;
+ GlyphHeader &glyph_header = const_cast<GlyphHeader &> (header);
+ (HBUINT16 &) StructAtOffset<HBUINT16> (&glyph_header, instruction_len_offset ()) = 0;
+ }
+
+ void drop_hints_bytes (hb_bytes_t &dest_start, hb_bytes_t &dest_end) const
+ {
+ unsigned int instructions_len = instructions_length ();
+ unsigned int glyph_length = length (instructions_len);
+ dest_start = bytes.sub_array (0, glyph_length - instructions_len);
+ dest_end = bytes.sub_array (glyph_length, bytes.length - glyph_length);
+ }
+
+ void set_overlaps_flag ()
+ {
+ if (unlikely (!header.numberOfContours)) return;
+
+ unsigned flags_offset = length (instructions_length ());
+ 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;
+ }
+
+ static bool read_flags (const HBUINT8 *&p /* IN/OUT */,
+ hb_array_t<contour_point_t> points_ /* IN/OUT */,
+ const HBUINT8 *end)
+ {
+ unsigned count = points_.length;
+ for (unsigned int i = 0; i < count;)
+ {
+ if (unlikely (p + 1 > end)) return false;
+ uint8_t flag = *p++;
+ points_.arrayZ[i++].flag = flag;
+ if (flag & FLAG_REPEAT)
+ {
+ if (unlikely (p + 1 > end)) return false;
+ unsigned int repeat_count = *p++;
+ unsigned stop = hb_min (i + repeat_count, count);
+ for (; i < stop; i++)
+ points_.arrayZ[i].flag = flag;
+ }
+ }
+ return true;
+ }
+
+ static bool read_points (const HBUINT8 *&p /* IN/OUT */,
+ hb_array_t<contour_point_t> points_ /* IN/OUT */,
+ const HBUINT8 *end,
+ float contour_point_t::*m,
+ const simple_glyph_flag_t short_flag,
+ const simple_glyph_flag_t same_flag)
+ {
+ int v = 0;
+
+ unsigned count = points_.length;
+ for (unsigned i = 0; i < count; i++)
+ {
+ unsigned flag = points_.arrayZ[i].flag;
+ if (flag & short_flag)
+ {
+ if (unlikely (p + 1 > end)) return false;
+ if (flag & same_flag)
+ v += *p++;
+ else
+ v -= *p++;
+ }
+ else
+ {
+ if (!(flag & same_flag))
+ {
+ if (unlikely (p + HBINT16::static_size > end)) return false;
+ v += *(const HBINT16 *) p;
+ p += HBINT16::static_size;
+ }
+ }
+ points_.arrayZ[i].*m = v;
+ }
+ return true;
+ }
+
+ bool get_contour_points (contour_point_vector_t &points /* OUT */,
+ bool phantom_only = false) const
+ {
+ const HBUINT16 *endPtsOfContours = &StructAfter<HBUINT16> (header);
+ int num_contours = header.numberOfContours;
+ assert (num_contours > 0);
+ /* One extra item at the end, for the instruction-count below. */
+ if (unlikely (!bytes.check_range (&endPtsOfContours[num_contours]))) return false;
+ unsigned int num_points = endPtsOfContours[num_contours - 1] + 1;
+
+ unsigned old_length = points.length;
+ points.alloc (points.length + num_points + 4, true); // Allocate for phantom points, to avoid a possible copy
+ if (!points.resize (points.length + num_points, false)) return false;
+ auto points_ = points.as_array ().sub_array (old_length);
+ hb_memset (points_.arrayZ, 0, sizeof (contour_point_t) * num_points);
+ if (phantom_only) return true;
+
+ for (int i = 0; i < num_contours; i++)
+ points_[endPtsOfContours[i]].is_end_point = true;
+
+ /* Skip instructions */
+ const HBUINT8 *p = &StructAtOffset<HBUINT8> (&endPtsOfContours[num_contours + 1],
+ endPtsOfContours[num_contours]);
+
+ if (unlikely ((const char *) p < bytes.arrayZ)) return false; /* Unlikely overflow */
+ const HBUINT8 *end = (const HBUINT8 *) (bytes.arrayZ + bytes.length);
+ if (unlikely (p >= end)) return false;
+
+ /* Read x & y coordinates */
+ return read_flags (p, points_, end)
+ && read_points (p, points_, end, &contour_point_t::x,
+ FLAG_X_SHORT, FLAG_X_SAME)
+ && read_points (p, points_, end, &contour_point_t::y,
+ FLAG_Y_SHORT, FLAG_Y_SAME);
+ }
+
+ static void encode_coord (int value,
+ unsigned &flag,
+ const simple_glyph_flag_t short_flag,
+ const simple_glyph_flag_t same_flag,
+ hb_vector_t<uint8_t> &coords /* OUT */)
+ {
+ if (value == 0)
+ {
+ flag |= same_flag;
+ }
+ else if (value >= -255 && value <= 255)
+ {
+ flag |= short_flag;
+ if (value > 0) flag |= same_flag;
+ else value = -value;
+
+ coords.arrayZ[coords.length++] = (uint8_t) value;
+ }
+ else
+ {
+ int16_t val = value;
+ coords.arrayZ[coords.length++] = val >> 8;
+ coords.arrayZ[coords.length++] = val & 0xff;
+ }
+ }
+
+ static void encode_flag (unsigned flag,
+ unsigned &repeat,
+ unsigned lastflag,
+ hb_vector_t<uint8_t> &flags /* OUT */)
+ {
+ if (flag == lastflag && repeat != 255)
+ {
+ repeat++;
+ if (repeat == 1)
+ {
+ /* We know there's room. */
+ flags.arrayZ[flags.length++] = flag;
+ }
+ else
+ {
+ unsigned len = flags.length;
+ flags.arrayZ[len-2] = flag | FLAG_REPEAT;
+ flags.arrayZ[len-1] = repeat;
+ }
+ }
+ else
+ {
+ repeat = 0;
+ flags.arrayZ[flags.length++] = flag;
+ }
+ }
+
+ bool compile_bytes_with_deltas (const contour_point_vector_t &all_points,
+ bool no_hinting,
+ hb_bytes_t &dest_bytes /* OUT */)
+ {
+ if (header.numberOfContours == 0 || all_points.length <= 4)
+ {
+ dest_bytes = hb_bytes_t ();
+ return true;
+ }
+ unsigned num_points = all_points.length - 4;
+
+ hb_vector_t<uint8_t> flags, x_coords, y_coords;
+ if (unlikely (!flags.alloc (num_points, true))) return false;
+ if (unlikely (!x_coords.alloc (2*num_points, true))) return false;
+ if (unlikely (!y_coords.alloc (2*num_points, true))) return false;
+
+ unsigned lastflag = 255, repeat = 0;
+ int prev_x = 0, prev_y = 0;
+
+ for (unsigned i = 0; i < num_points; i++)
+ {
+ unsigned flag = all_points.arrayZ[i].flag;
+ flag &= FLAG_ON_CURVE | FLAG_OVERLAP_SIMPLE | FLAG_CUBIC;
+
+ int cur_x = roundf (all_points.arrayZ[i].x);
+ int cur_y = roundf (all_points.arrayZ[i].y);
+ encode_coord (cur_x - prev_x, flag, FLAG_X_SHORT, FLAG_X_SAME, x_coords);
+ encode_coord (cur_y - prev_y, flag, FLAG_Y_SHORT, FLAG_Y_SAME, y_coords);
+ encode_flag (flag, repeat, lastflag, flags);
+
+ prev_x = cur_x;
+ prev_y = cur_y;
+ lastflag = flag;
+ }
+
+ unsigned len_before_instrs = 2 * header.numberOfContours + 2;
+ unsigned len_instrs = instructions_length ();
+ unsigned total_len = len_before_instrs + flags.length + x_coords.length + y_coords.length;
+
+ if (!no_hinting)
+ total_len += len_instrs;
+
+ char *p = (char *) hb_malloc (total_len);
+ if (unlikely (!p)) return false;
+
+ const char *src = bytes.arrayZ + GlyphHeader::static_size;
+ char *cur = p;
+ hb_memcpy (p, src, len_before_instrs);
+
+ cur += len_before_instrs;
+ src += len_before_instrs;
+
+ if (!no_hinting)
+ {
+ hb_memcpy (cur, src, len_instrs);
+ cur += len_instrs;
+ }
+
+ hb_memcpy (cur, flags.arrayZ, flags.length);
+ cur += flags.length;
+
+ hb_memcpy (cur, x_coords.arrayZ, x_coords.length);
+ cur += x_coords.length;
+
+ hb_memcpy (cur, y_coords.arrayZ, y_coords.length);
+
+ dest_bytes = hb_bytes_t (p, total_len);
+ return true;
+ }
+};
+
+
+} /* namespace glyf_impl */
+} /* namespace OT */
+
+
+#endif /* OT_GLYF_SIMPLEGLYPH_HH */
diff --git a/gfx/harfbuzz/src/OT/glyf/SubsetGlyph.hh b/gfx/harfbuzz/src/OT/glyf/SubsetGlyph.hh
new file mode 100644
index 0000000000..26dc374eab
--- /dev/null
+++ b/gfx/harfbuzz/src/OT/glyf/SubsetGlyph.hh
@@ -0,0 +1,152 @@
+#ifndef OT_GLYF_SUBSETGLYPH_HH
+#define OT_GLYF_SUBSETGLYPH_HH
+
+
+#include "../../hb-open-type.hh"
+
+
+namespace OT {
+
+struct glyf_accelerator_t;
+
+namespace glyf_impl {
+
+
+struct SubsetGlyph
+{
+ hb_codepoint_t old_gid;
+ Glyph source_glyph;
+ hb_bytes_t dest_start; /* region of source_glyph to copy first */
+ hb_bytes_t dest_end; /* region of source_glyph to copy second */
+ bool allocated;
+
+ bool serialize (hb_serialize_context_t *c,
+ bool use_short_loca,
+ const hb_subset_plan_t *plan)
+ {
+ TRACE_SERIALIZE (this);
+
+ hb_bytes_t dest_glyph = dest_start.copy (c);
+ hb_bytes_t end_copy = dest_end.copy (c);
+ if (!end_copy.arrayZ || !dest_glyph.arrayZ) {
+ return false;
+ }
+
+ dest_glyph = hb_bytes_t (&dest_glyph, dest_glyph.length + end_copy.length);
+ unsigned int pad_length = use_short_loca ? padding () : 0;
+ DEBUG_MSG (SUBSET, nullptr, "serialize %u byte glyph, width %u pad %u", dest_glyph.length, dest_glyph.length + pad_length, pad_length);
+
+ HBUINT8 pad;
+ pad = 0;
+ while (pad_length > 0)
+ {
+ c->embed (pad);
+ pad_length--;
+ }
+
+ if (unlikely (!dest_glyph.length)) return_trace (true);
+
+ /* update components gids. */
+ for (auto &_ : Glyph (dest_glyph).get_composite_iterator ())
+ {
+ hb_codepoint_t new_gid;
+ if (plan->new_gid_for_old_gid (_.get_gid(), &new_gid))
+ const_cast<CompositeGlyphRecord &> (_).set_gid (new_gid);
+ }
+#ifndef HB_NO_VAR_COMPOSITES
+ for (auto &_ : Glyph (dest_glyph).get_var_composite_iterator ())
+ {
+ hb_codepoint_t new_gid;
+ if (plan->new_gid_for_old_gid (_.get_gid(), &new_gid))
+ const_cast<VarCompositeGlyphRecord &> (_).set_gid (new_gid);
+ }
+#endif
+
+#ifndef HB_NO_BEYOND_64K
+ auto it = Glyph (dest_glyph).get_composite_iterator ();
+ if (it)
+ {
+ /* lower GID24 to GID16 in components if possible.
+ *
+ * TODO: VarComposite. Not as critical, since VarComposite supports
+ * gid24 from the first version. */
+ char *p = it ? (char *) &*it : nullptr;
+ char *q = p;
+ const char *end = dest_glyph.arrayZ + dest_glyph.length;
+ while (it)
+ {
+ auto &rec = const_cast<CompositeGlyphRecord &> (*it);
+ ++it;
+
+ q += rec.get_size ();
+
+ rec.lower_gid_24_to_16 ();
+
+ unsigned size = rec.get_size ();
+
+ memmove (p, &rec, size);
+
+ p += size;
+ }
+ memmove (p, q, end - q);
+ p += end - q;
+
+ /* We want to shorten the glyph, but we can't do that without
+ * updating the length in the loca table, which is already
+ * written out :-(. So we just fill the rest of the glyph with
+ * harmless instructions, since that's what they will be
+ * interpreted as.
+ *
+ * Should move the lowering to _populate_subset_glyphs() to
+ * fix this issue. */
+
+ hb_memset (p, 0x7A /* TrueType instruction ROFF; harmless */, end - p);
+ p += end - p;
+ dest_glyph = hb_bytes_t (dest_glyph.arrayZ, p - (char *) dest_glyph.arrayZ);
+
+ // TODO: Padding; & trim serialized bytes.
+ // TODO: Update length in loca. Ugh.
+ }
+#endif
+
+ if (plan->flags & HB_SUBSET_FLAGS_NO_HINTING)
+ Glyph (dest_glyph).drop_hints ();
+
+ if (plan->flags & HB_SUBSET_FLAGS_SET_OVERLAPS_FLAG)
+ Glyph (dest_glyph).set_overlaps_flag ();
+
+ return_trace (true);
+ }
+
+ bool compile_bytes_with_deltas (const hb_subset_plan_t *plan,
+ hb_font_t *font,
+ const glyf_accelerator_t &glyf)
+ {
+ allocated = source_glyph.compile_bytes_with_deltas (plan, font, glyf, dest_start, dest_end);
+ return allocated;
+ }
+
+ void free_compiled_bytes ()
+ {
+ if (likely (allocated)) {
+ allocated = false;
+ dest_start.fini ();
+ dest_end.fini ();
+ }
+ }
+
+ void drop_hints_bytes ()
+ { source_glyph.drop_hints_bytes (dest_start, dest_end); }
+
+ unsigned int length () const { return dest_start.length + dest_end.length; }
+ /* pad to 2 to ensure 2-byte loca will be ok */
+ unsigned int padding () const { return length () % 2; }
+ unsigned int padded_size () const { return length () + padding (); }
+};
+
+
+} /* namespace glyf_impl */
+} /* namespace OT */
+
+
+#endif /* OT_GLYF_SUBSETGLYPH_HH */
diff --git a/gfx/harfbuzz/src/OT/glyf/VarCompositeGlyph.hh b/gfx/harfbuzz/src/OT/glyf/VarCompositeGlyph.hh
new file mode 100644
index 0000000000..6dc6fd9ded
--- /dev/null
+++ b/gfx/harfbuzz/src/OT/glyf/VarCompositeGlyph.hh
@@ -0,0 +1,401 @@
+#ifndef OT_GLYF_VARCOMPOSITEGLYPH_HH
+#define OT_GLYF_VARCOMPOSITEGLYPH_HH
+
+
+#include "../../hb-open-type.hh"
+#include "coord-setter.hh"
+
+
+namespace OT {
+namespace glyf_impl {
+
+
+struct VarCompositeGlyphRecord
+{
+ protected:
+ enum var_composite_glyph_flag_t
+ {
+ USE_MY_METRICS = 0x0001,
+ AXIS_INDICES_ARE_SHORT = 0x0002,
+ UNIFORM_SCALE = 0x0004,
+ HAVE_TRANSLATE_X = 0x0008,
+ HAVE_TRANSLATE_Y = 0x0010,
+ HAVE_ROTATION = 0x0020,
+ HAVE_SCALE_X = 0x0040,
+ HAVE_SCALE_Y = 0x0080,
+ HAVE_SKEW_X = 0x0100,
+ HAVE_SKEW_Y = 0x0200,
+ HAVE_TCENTER_X = 0x0400,
+ HAVE_TCENTER_Y = 0x0800,
+ GID_IS_24BIT = 0x1000,
+ AXES_HAVE_VARIATION = 0x2000,
+ RESET_UNSPECIFIED_AXES = 0x4000,
+ };
+
+ public:
+
+ unsigned int get_size () const
+ {
+ unsigned fl = flags;
+ unsigned int size = min_size;
+
+ unsigned axis_width = (fl & AXIS_INDICES_ARE_SHORT) ? 4 : 3;
+ size += numAxes * axis_width;
+
+ if (fl & GID_IS_24BIT) size += 1;
+
+ // 2 bytes each for the following flags
+ fl = fl & (HAVE_TRANSLATE_X | HAVE_TRANSLATE_Y |
+ HAVE_ROTATION |
+ HAVE_SCALE_X | HAVE_SCALE_Y |
+ HAVE_SKEW_X | HAVE_SKEW_Y |
+ HAVE_TCENTER_X | HAVE_TCENTER_Y);
+ size += hb_popcount (fl) * 2;
+
+ return size;
+ }
+
+ bool has_more () const { return true; }
+
+ bool is_use_my_metrics () const { return flags & USE_MY_METRICS; }
+ bool is_reset_unspecified_axes () const { return flags & RESET_UNSPECIFIED_AXES; }
+
+ hb_codepoint_t get_gid () const
+ {
+ if (flags & GID_IS_24BIT)
+ return * (const HBGlyphID24 *) &pad;
+ else
+ return * (const HBGlyphID16 *) &pad;
+ }
+
+ void set_gid (hb_codepoint_t gid)
+ {
+ if (flags & GID_IS_24BIT)
+ * (HBGlyphID24 *) &pad = gid;
+ else
+ * (HBGlyphID16 *) &pad = gid;
+ }
+
+ unsigned get_numAxes () const
+ {
+ return numAxes;
+ }
+
+ unsigned get_num_points () const
+ {
+ unsigned fl = flags;
+ unsigned num = 0;
+ if (fl & AXES_HAVE_VARIATION) num += numAxes;
+
+ /* Hopefully faster code, relying on the value of the flags. */
+ fl = (((fl & (HAVE_TRANSLATE_Y | HAVE_SCALE_Y | HAVE_SKEW_Y | HAVE_TCENTER_Y)) >> 1) | fl) &
+ (HAVE_TRANSLATE_X | HAVE_ROTATION | HAVE_SCALE_X | HAVE_SKEW_X | HAVE_TCENTER_X);
+ num += hb_popcount (fl);
+ return num;
+
+ /* Slower but more readable code. */
+ if (fl & (HAVE_TRANSLATE_X | HAVE_TRANSLATE_Y)) num++;
+ if (fl & HAVE_ROTATION) num++;
+ if (fl & (HAVE_SCALE_X | HAVE_SCALE_Y)) num++;
+ if (fl & (HAVE_SKEW_X | HAVE_SKEW_Y)) num++;
+ if (fl & (HAVE_TCENTER_X | HAVE_TCENTER_Y)) num++;
+ return num;
+ }
+
+ void transform_points (hb_array_t<const contour_point_t> record_points,
+ hb_array_t<contour_point_t> points) const
+ {
+ float matrix[4];
+ contour_point_t trans;
+
+ get_transformation_from_points (record_points.arrayZ, matrix, trans);
+
+ auto arrayZ = points.arrayZ;
+ unsigned count = points.length;
+
+ if (matrix[0] != 1.f || matrix[1] != 0.f ||
+ matrix[2] != 0.f || matrix[3] != 1.f)
+ for (unsigned i = 0; i < count; i++)
+ arrayZ[i].transform (matrix);
+
+ if (trans.x != 0.f || trans.y != 0.f)
+ for (unsigned i = 0; i < count; i++)
+ arrayZ[i].translate (trans);
+ }
+
+ static inline void transform (float (&matrix)[4], contour_point_t &trans,
+ float (other)[6])
+ {
+ // https://github.com/fonttools/fonttools/blob/f66ee05f71c8b57b5f519ee975e95edcd1466e14/Lib/fontTools/misc/transform.py#L268
+ float xx1 = other[0];
+ float xy1 = other[1];
+ float yx1 = other[2];
+ float yy1 = other[3];
+ float dx1 = other[4];
+ float dy1 = other[5];
+ float xx2 = matrix[0];
+ float xy2 = matrix[1];
+ float yx2 = matrix[2];
+ float yy2 = matrix[3];
+ float dx2 = trans.x;
+ float dy2 = trans.y;
+
+ matrix[0] = xx1*xx2 + xy1*yx2;
+ matrix[1] = xx1*xy2 + xy1*yy2;
+ matrix[2] = yx1*xx2 + yy1*yx2;
+ matrix[3] = yx1*xy2 + yy1*yy2;
+ trans.x = xx2*dx1 + yx2*dy1 + dx2;
+ trans.y = xy2*dx1 + yy2*dy1 + dy2;
+ }
+
+ static void translate (float (&matrix)[4], contour_point_t &trans,
+ float translateX, float translateY)
+ {
+ if (!translateX && !translateY)
+ return;
+
+ trans.x += matrix[0] * translateX + matrix[2] * translateY;
+ trans.y += matrix[1] * translateX + matrix[3] * translateY;
+ }
+
+ static void scale (float (&matrix)[4], contour_point_t &trans,
+ float scaleX, float scaleY)
+ {
+ if (scaleX == 1.f && scaleY == 1.f)
+ return;
+
+ matrix[0] *= scaleX;
+ matrix[1] *= scaleX;
+ matrix[2] *= scaleY;
+ matrix[3] *= scaleY;
+ }
+
+ static void rotate (float (&matrix)[4], contour_point_t &trans,
+ float rotation)
+ {
+ if (!rotation)
+ return;
+
+ // https://github.com/fonttools/fonttools/blob/f66ee05f71c8b57b5f519ee975e95edcd1466e14/Lib/fontTools/misc/transform.py#L240
+ rotation = rotation * HB_PI;
+ float c;
+ float s;
+#ifdef HAVE_SINCOSF
+ sincosf (rotation, &s, &c);
+#else
+ c = cosf (rotation);
+ s = sinf (rotation);
+#endif
+ float other[6] = {c, s, -s, c, 0.f, 0.f};
+ transform (matrix, trans, other);
+ }
+
+ static void skew (float (&matrix)[4], contour_point_t &trans,
+ float skewX, float skewY)
+ {
+ if (!skewX && !skewY)
+ return;
+
+ // https://github.com/fonttools/fonttools/blob/f66ee05f71c8b57b5f519ee975e95edcd1466e14/Lib/fontTools/misc/transform.py#L255
+ skewX = skewX * HB_PI;
+ skewY = skewY * HB_PI;
+ float other[6] = {1.f,
+ skewY ? tanf (skewY) : 0.f,
+ skewX ? tanf (skewX) : 0.f,
+ 1.f,
+ 0.f, 0.f};
+ transform (matrix, trans, other);
+ }
+
+ bool get_points (contour_point_vector_t &points) const
+ {
+ unsigned num_points = get_num_points ();
+
+ points.alloc (points.length + num_points + 4); // For phantom points
+ if (unlikely (!points.resize (points.length + num_points, false))) return false;
+ contour_point_t *rec_points = points.arrayZ + (points.length - num_points);
+ memset (rec_points, 0, num_points * sizeof (rec_points[0]));
+
+ unsigned fl = flags;
+
+ unsigned num_axes = numAxes;
+ unsigned axis_width = (fl & AXIS_INDICES_ARE_SHORT) ? 2 : 1;
+ unsigned axes_size = num_axes * axis_width;
+
+ const F2DOT14 *q = (const F2DOT14 *) (axes_size +
+ (fl & GID_IS_24BIT ? 3 : 2) +
+ (const HBUINT8 *) &pad);
+
+ unsigned count = num_axes;
+ if (fl & AXES_HAVE_VARIATION)
+ {
+ for (unsigned i = 0; i < count; i++)
+ rec_points++->x = q++->to_int ();
+ }
+ else
+ q += count;
+
+ const HBUINT16 *p = (const HBUINT16 *) q;
+
+ if (fl & (HAVE_TRANSLATE_X | HAVE_TRANSLATE_Y))
+ {
+ int translateX = (fl & HAVE_TRANSLATE_X) ? * (const FWORD *) p++ : 0;
+ int translateY = (fl & HAVE_TRANSLATE_Y) ? * (const FWORD *) p++ : 0;
+ rec_points->x = translateX;
+ rec_points->y = translateY;
+ rec_points++;
+ }
+ if (fl & HAVE_ROTATION)
+ {
+ int rotation = (fl & HAVE_ROTATION) ? ((const F4DOT12 *) p++)->to_int () : 0;
+ rec_points->x = rotation;
+ rec_points++;
+ }
+ if (fl & (HAVE_SCALE_X | HAVE_SCALE_Y))
+ {
+ int scaleX = (fl & HAVE_SCALE_X) ? ((const F6DOT10 *) p++)->to_int () : 1 << 10;
+ int scaleY = (fl & HAVE_SCALE_Y) ? ((const F6DOT10 *) p++)->to_int () : 1 << 10;
+ if ((fl & UNIFORM_SCALE) && !(fl & HAVE_SCALE_Y))
+ scaleY = scaleX;
+ rec_points->x = scaleX;
+ rec_points->y = scaleY;
+ rec_points++;
+ }
+ if (fl & (HAVE_SKEW_X | HAVE_SKEW_Y))
+ {
+ int skewX = (fl & HAVE_SKEW_X) ? ((const F4DOT12 *) p++)->to_int () : 0;
+ int skewY = (fl & HAVE_SKEW_Y) ? ((const F4DOT12 *) p++)->to_int () : 0;
+ rec_points->x = skewX;
+ rec_points->y = skewY;
+ rec_points++;
+ }
+ if (fl & (HAVE_TCENTER_X | HAVE_TCENTER_Y))
+ {
+ int tCenterX = (fl & HAVE_TCENTER_X) ? * (const FWORD *) p++ : 0;
+ int tCenterY = (fl & HAVE_TCENTER_Y) ? * (const FWORD *) p++ : 0;
+ rec_points->x = tCenterX;
+ rec_points->y = tCenterY;
+ rec_points++;
+ }
+
+ return true;
+ }
+
+ void get_transformation_from_points (const contour_point_t *rec_points,
+ float (&matrix)[4], contour_point_t &trans) const
+ {
+ unsigned fl = flags;
+
+ if (fl & AXES_HAVE_VARIATION)
+ rec_points += numAxes;
+
+ matrix[0] = matrix[3] = 1.f;
+ matrix[1] = matrix[2] = 0.f;
+ trans.init (0.f, 0.f);
+
+ float translateX = 0.f;
+ float translateY = 0.f;
+ float rotation = 0.f;
+ float scaleX = 1.f;
+ float scaleY = 1.f;
+ float skewX = 0.f;
+ float skewY = 0.f;
+ float tCenterX = 0.f;
+ float tCenterY = 0.f;
+
+ if (fl & (HAVE_TRANSLATE_X | HAVE_TRANSLATE_Y))
+ {
+ translateX = rec_points->x;
+ translateY = rec_points->y;
+ rec_points++;
+ }
+ if (fl & HAVE_ROTATION)
+ {
+ rotation = rec_points->x / (1 << 12);
+ rec_points++;
+ }
+ if (fl & (HAVE_SCALE_X | HAVE_SCALE_Y))
+ {
+ scaleX = rec_points->x / (1 << 10);
+ scaleY = rec_points->y / (1 << 10);
+ rec_points++;
+ }
+ if (fl & (HAVE_SKEW_X | HAVE_SKEW_Y))
+ {
+ skewX = rec_points->x / (1 << 12);
+ skewY = rec_points->y / (1 << 12);
+ rec_points++;
+ }
+ if (fl & (HAVE_TCENTER_X | HAVE_TCENTER_Y))
+ {
+ tCenterX = rec_points->x;
+ tCenterY = rec_points->y;
+ rec_points++;
+ }
+
+ translate (matrix, trans, translateX + tCenterX, translateY + tCenterY);
+ rotate (matrix, trans, rotation);
+ scale (matrix, trans, scaleX, scaleY);
+ skew (matrix, trans, -skewX, skewY);
+ translate (matrix, trans, -tCenterX, -tCenterY);
+ }
+
+ void set_variations (coord_setter_t &setter,
+ hb_array_t<contour_point_t> rec_points) const
+ {
+ bool have_variations = flags & AXES_HAVE_VARIATION;
+ unsigned axis_width = (flags & AXIS_INDICES_ARE_SHORT) ? 2 : 1;
+ unsigned num_axes = numAxes;
+
+ const HBUINT8 *p = (const HBUINT8 *) (((HBUINT8 *) &numAxes) + numAxes.static_size + (flags & GID_IS_24BIT ? 3 : 2));
+ const HBUINT16 *q = (const HBUINT16 *) (((HBUINT8 *) &numAxes) + numAxes.static_size + (flags & GID_IS_24BIT ? 3 : 2));
+
+ const F2DOT14 *a = (const F2DOT14 *) ((HBUINT8 *) (axis_width == 1 ? (p + num_axes) : (HBUINT8 *) (q + num_axes)));
+
+ unsigned count = num_axes;
+ for (unsigned i = 0; i < count; i++)
+ {
+ unsigned axis_index = axis_width == 1 ? (unsigned) *p++ : (unsigned) *q++;
+
+ signed v = have_variations ? rec_points.arrayZ[i].x : a++->to_int ();
+
+ v = hb_clamp (v, -(1<<14), (1<<14));
+ setter[axis_index] = v;
+ }
+ }
+
+ protected:
+ HBUINT16 flags;
+ HBUINT8 numAxes;
+ HBUINT16 pad;
+ public:
+ DEFINE_SIZE_MIN (5);
+};
+
+using var_composite_iter_t = composite_iter_tmpl<VarCompositeGlyphRecord>;
+
+struct VarCompositeGlyph
+{
+ const GlyphHeader &header;
+ hb_bytes_t bytes;
+ VarCompositeGlyph (const GlyphHeader &header_, hb_bytes_t bytes_) :
+ header (header_), bytes (bytes_) {}
+
+ var_composite_iter_t iter () const
+ { return var_composite_iter_t (bytes, &StructAfter<VarCompositeGlyphRecord, GlyphHeader> (header)); }
+
+ const hb_bytes_t trim_padding () const
+ {
+ unsigned length = GlyphHeader::static_size;
+ for (auto &comp : iter ())
+ length += comp.get_size ();
+ return bytes.sub_array (0, length);
+ }
+};
+
+
+} /* namespace glyf_impl */
+} /* namespace OT */
+
+
+#endif /* OT_GLYF_VARCOMPOSITEGLYPH_HH */
diff --git a/gfx/harfbuzz/src/OT/glyf/composite-iter.hh b/gfx/harfbuzz/src/OT/glyf/composite-iter.hh
new file mode 100644
index 0000000000..d05701f3d1
--- /dev/null
+++ b/gfx/harfbuzz/src/OT/glyf/composite-iter.hh
@@ -0,0 +1,68 @@
+#ifndef OT_GLYF_COMPOSITE_ITER_HH
+#define OT_GLYF_COMPOSITE_ITER_HH
+
+
+#include "../../hb.hh"
+
+
+namespace OT {
+namespace glyf_impl {
+
+
+template <typename CompositeGlyphRecord>
+struct composite_iter_tmpl : hb_iter_with_fallback_t<composite_iter_tmpl<CompositeGlyphRecord>,
+ const CompositeGlyphRecord &>
+{
+ typedef const CompositeGlyphRecord *__item_t__;
+ composite_iter_tmpl (hb_bytes_t glyph_, __item_t__ current_) :
+ glyph (glyph_), current (nullptr), current_size (0)
+ {
+ set_current (current_);
+ }
+
+ composite_iter_tmpl () : glyph (hb_bytes_t ()), current (nullptr), current_size (0) {}
+
+ const CompositeGlyphRecord & __item__ () const { return *current; }
+ bool __more__ () const { return current; }
+ void __next__ ()
+ {
+ if (!current->has_more ()) { current = nullptr; return; }
+
+ set_current (&StructAtOffset<CompositeGlyphRecord> (current, current_size));
+ }
+ composite_iter_tmpl __end__ () const { return composite_iter_tmpl (); }
+ bool operator != (const composite_iter_tmpl& o) const
+ { return current != o.current; }
+
+
+ void set_current (__item_t__ current_)
+ {
+ if (!glyph.check_range (current_, CompositeGlyphRecord::min_size))
+ {
+ current = nullptr;
+ current_size = 0;
+ return;
+ }
+ unsigned size = current_->get_size ();
+ if (!glyph.check_range (current_, size))
+ {
+ current = nullptr;
+ current_size = 0;
+ return;
+ }
+
+ current = current_;
+ current_size = size;
+ }
+
+ private:
+ hb_bytes_t glyph;
+ __item_t__ current;
+ unsigned current_size;
+};
+
+
+} /* namespace glyf_impl */
+} /* namespace OT */
+
+#endif /* OT_GLYF_COMPOSITE_ITER_HH */
diff --git a/gfx/harfbuzz/src/OT/glyf/coord-setter.hh b/gfx/harfbuzz/src/OT/glyf/coord-setter.hh
new file mode 100644
index 0000000000..df64ed5af7
--- /dev/null
+++ b/gfx/harfbuzz/src/OT/glyf/coord-setter.hh
@@ -0,0 +1,34 @@
+#ifndef OT_GLYF_COORD_SETTER_HH
+#define OT_GLYF_COORD_SETTER_HH
+
+
+#include "../../hb.hh"
+
+
+namespace OT {
+namespace glyf_impl {
+
+
+struct coord_setter_t
+{
+ coord_setter_t (hb_array_t<int> coords) :
+ coords (coords) {}
+
+ int& operator [] (unsigned idx)
+ {
+ if (coords.length < idx + 1)
+ coords.resize (idx + 1);
+ return coords[idx];
+ }
+
+ hb_array_t<int> get_coords ()
+ { return coords.as_array (); }
+
+ hb_vector_t<int> coords;
+};
+
+
+} /* namespace glyf_impl */
+} /* namespace OT */
+
+#endif /* OT_GLYF_COORD_SETTER_HH */
diff --git a/gfx/harfbuzz/src/OT/glyf/glyf-helpers.hh b/gfx/harfbuzz/src/OT/glyf/glyf-helpers.hh
new file mode 100644
index 0000000000..30106b2b98
--- /dev/null
+++ b/gfx/harfbuzz/src/OT/glyf/glyf-helpers.hh
@@ -0,0 +1,104 @@
+#ifndef OT_GLYF_GLYF_HELPERS_HH
+#define OT_GLYF_GLYF_HELPERS_HH
+
+
+#include "../../hb-open-type.hh"
+#include "../../hb-subset-plan.hh"
+
+#include "loca.hh"
+
+
+namespace OT {
+namespace glyf_impl {
+
+
+template<typename IteratorIn, typename IteratorOut,
+ hb_requires (hb_is_source_of (IteratorIn, unsigned int)),
+ hb_requires (hb_is_sink_of (IteratorOut, unsigned))>
+static void
+_write_loca (IteratorIn&& it, bool short_offsets, IteratorOut&& dest)
+{
+ unsigned right_shift = short_offsets ? 1 : 0;
+ unsigned int offset = 0;
+ dest << 0;
+ + it
+ | hb_map ([=, &offset] (unsigned int padded_size)
+ {
+ offset += padded_size;
+ DEBUG_MSG (SUBSET, nullptr, "loca entry offset %u", offset);
+ return offset >> right_shift;
+ })
+ | hb_sink (dest)
+ ;
+}
+
+static bool
+_add_head_and_set_loca_version (hb_subset_plan_t *plan, bool use_short_loca)
+{
+ hb_blob_t *head_blob = hb_sanitize_context_t ().reference_table<head> (plan->source);
+ hb_blob_t *head_prime_blob = hb_blob_copy_writable_or_fail (head_blob);
+ hb_blob_destroy (head_blob);
+
+ if (unlikely (!head_prime_blob))
+ return false;
+
+ head *head_prime = (head *) hb_blob_get_data_writable (head_prime_blob, nullptr);
+ head_prime->indexToLocFormat = use_short_loca ? 0 : 1;
+ if (plan->normalized_coords)
+ {
+ head_prime->xMin = plan->head_maxp_info.xMin;
+ head_prime->xMax = plan->head_maxp_info.xMax;
+ head_prime->yMin = plan->head_maxp_info.yMin;
+ head_prime->yMax = plan->head_maxp_info.yMax;
+
+ unsigned orig_flag = head_prime->flags;
+ if (plan->head_maxp_info.allXMinIsLsb)
+ orig_flag |= 1 << 1;
+ else
+ orig_flag &= ~(1 << 1);
+ head_prime->flags = orig_flag;
+ }
+ bool success = plan->add_table (HB_OT_TAG_head, head_prime_blob);
+
+ hb_blob_destroy (head_prime_blob);
+ return success;
+}
+
+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, bool use_short_loca)
+{
+ unsigned num_offsets = padded_offsets.len () + 1;
+ 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 %u num_offsets %u size %u",
+ entry_size, num_offsets, entry_size * num_offsets);
+
+ if (use_short_loca)
+ _write_loca (padded_offsets, true, hb_array ((HBUINT16 *) loca_prime_data, num_offsets));
+ else
+ _write_loca (padded_offsets, false, hb_array ((HBUINT32 *) loca_prime_data, num_offsets));
+
+ hb_blob_t *loca_blob = hb_blob_create (loca_prime_data,
+ entry_size * num_offsets,
+ HB_MEMORY_MODE_WRITABLE,
+ loca_prime_data,
+ hb_free);
+
+ bool result = plan->add_table (HB_OT_TAG_loca, loca_blob)
+ && _add_head_and_set_loca_version (plan, use_short_loca);
+
+ hb_blob_destroy (loca_blob);
+ return result;
+}
+
+
+} /* namespace glyf_impl */
+} /* namespace OT */
+
+
+#endif /* OT_GLYF_GLYF_HELPERS_HH */
diff --git a/gfx/harfbuzz/src/OT/glyf/glyf.hh b/gfx/harfbuzz/src/OT/glyf/glyf.hh
new file mode 100644
index 0000000000..dd08dda6ee
--- /dev/null
+++ b/gfx/harfbuzz/src/OT/glyf/glyf.hh
@@ -0,0 +1,504 @@
+#ifndef OT_GLYF_GLYF_HH
+#define OT_GLYF_GLYF_HH
+
+
+#include "../../hb-open-type.hh"
+#include "../../hb-ot-head-table.hh"
+#include "../../hb-ot-hmtx-table.hh"
+#include "../../hb-ot-var-gvar-table.hh"
+#include "../../hb-draw.hh"
+#include "../../hb-paint.hh"
+
+#include "glyf-helpers.hh"
+#include "Glyph.hh"
+#include "SubsetGlyph.hh"
+#include "loca.hh"
+#include "path-builder.hh"
+
+
+namespace OT {
+
+
+/*
+ * glyf -- TrueType Glyph Data
+ * https://docs.microsoft.com/en-us/typography/opentype/spec/glyf
+ */
+#define HB_OT_TAG_glyf HB_TAG('g','l','y','f')
+
+struct glyf
+{
+ friend struct glyf_accelerator_t;
+
+ static constexpr hb_tag_t tableTag = HB_OT_TAG_glyf;
+
+ static bool has_valid_glyf_format(const hb_face_t* face)
+ {
+ const OT::head &head = *face->table.head;
+ return head.indexToLocFormat <= 1 && head.glyphDataFormat <= 1;
+ }
+
+ bool sanitize (hb_sanitize_context_t *c HB_UNUSED) const
+ {
+ TRACE_SANITIZE (this);
+ /* Runtime checks as eager sanitizing each glyph is costy */
+ return_trace (true);
+ }
+
+ /* requires source of SubsetGlyph complains the identifier isn't declared */
+ 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 (auto &_ : it)
+ if (unlikely (!_.serialize (c, use_short_loca, plan)))
+ return false;
+
+ /* 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
+ * on Windows as well.
+ * See https://github.com/khaledhosny/ots/issues/52 */
+ if (init_len == c->length ())
+ {
+ HBUINT8 empty_byte;
+ empty_byte = 0;
+ c->copy (empty_byte);
+ }
+ return_trace (true);
+ }
+
+ /* Byte region(s) per glyph to output
+ unpadded, hints removed if so requested
+ If we fail to process a glyph we produce an empty (0-length) glyph */
+ bool subset (hb_subset_context_t *c) const
+ {
+ TRACE_SUBSET (this);
+
+ if (!has_valid_glyf_format (c->plan->source)) {
+ // glyf format is unknown don't attempt to subset it.
+ DEBUG_MSG (SUBSET, nullptr,
+ "unkown glyf format, dropping from subset.");
+ return_trace (false);
+ }
+
+ glyf *glyf_prime = c->serializer->start_embed <glyf> ();
+ if (unlikely (!c->serializer->check_success (glyf_prime))) return_trace (false);
+
+ hb_font_t *font = nullptr;
+ if (c->plan->normalized_coords)
+ {
+ font = _create_font_for_instancing (c->plan);
+ if (unlikely (!font)) return false;
+ }
+
+ hb_vector_t<unsigned> padded_offsets;
+ unsigned num_glyphs = c->plan->num_output_glyphs ();
+ if (unlikely (!padded_offsets.resize (num_glyphs)))
+ {
+ hb_font_destroy (font);
+ return false;
+ }
+
+ hb_vector_t<glyf_impl::SubsetGlyph> glyphs;
+ if (!_populate_subset_glyphs (c->plan, font, glyphs))
+ {
+ hb_font_destroy (font);
+ return false;
+ }
+
+ if (font)
+ hb_font_destroy (font);
+
+ unsigned max_offset = 0;
+ for (unsigned i = 0; i < num_glyphs; i++)
+ {
+ padded_offsets[i] = glyphs[i].padded_size ();
+ max_offset += padded_offsets[i];
+ }
+
+ bool use_short_loca = false;
+ if (likely (!c->plan->force_long_loca))
+ use_short_loca = max_offset < 0x1FFFF;
+
+ if (!use_short_loca) {
+ for (unsigned i = 0; i < num_glyphs; i++)
+ padded_offsets[i] = glyphs[i].length ();
+ }
+
+ bool result = glyf_prime->serialize (c->serializer, glyphs.writer (), use_short_loca, c->plan);
+ if (c->plan->normalized_coords && !c->plan->pinned_at_default)
+ _free_compiled_subset_glyphs (glyphs);
+
+ if (!result) return false;
+
+ if (unlikely (c->serializer->in_error ())) return_trace (false);
+
+ return_trace (c->serializer->check_success (glyf_impl::_add_loca_and_head (c->plan,
+ padded_offsets.iter (),
+ use_short_loca)));
+ }
+
+ bool
+ _populate_subset_glyphs (const hb_subset_plan_t *plan,
+ hb_font_t *font,
+ hb_vector_t<glyf_impl::SubsetGlyph> &glyphs /* OUT */) const;
+
+ hb_font_t *
+ _create_font_for_instancing (const hb_subset_plan_t *plan) const;
+
+ void _free_compiled_subset_glyphs (hb_vector_t<glyf_impl::SubsetGlyph> &glyphs) const
+ {
+ for (unsigned i = 0; i < glyphs.length; i++)
+ glyphs[i].free_compiled_bytes ();
+ }
+
+ protected:
+ UnsizedArrayOf<HBUINT8>
+ dataZ; /* Glyphs data. */
+ public:
+ DEFINE_SIZE_MIN (0); /* In reality, this is UNBOUNDED() type; but since we always
+ * check the size externally, allow Null() object of it by
+ * defining it _MIN instead. */
+};
+
+struct glyf_accelerator_t
+{
+ glyf_accelerator_t (hb_face_t *face)
+ {
+ short_offset = false;
+ num_glyphs = 0;
+ loca_table = nullptr;
+ glyf_table = nullptr;
+#ifndef HB_NO_VAR
+ gvar = nullptr;
+#endif
+ hmtx = nullptr;
+#ifndef HB_NO_VERTICAL
+ vmtx = nullptr;
+#endif
+ const OT::head &head = *face->table.head;
+ if (!glyf::has_valid_glyf_format (face))
+ /* Unknown format. Leave num_glyphs=0, that takes care of disabling us. */
+ return;
+ short_offset = 0 == head.indexToLocFormat;
+
+ 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 ());
+ }
+ ~glyf_accelerator_t ()
+ {
+ glyf_table.destroy ();
+ }
+
+ bool has_data () const { return num_glyphs; }
+
+ protected:
+ template<typename T>
+ bool get_points (hb_font_t *font, hb_codepoint_t gid, T consumer) const
+ {
+ if (gid >= num_glyphs) return false;
+
+ /* Making this allocfree is not that easy
+ https://github.com/harfbuzz/harfbuzz/issues/2095
+ mostly because of gvar handling in VF fonts,
+ perhaps a separate path for non-VF fonts can be considered */
+ contour_point_vector_t all_points;
+
+ bool phantom_only = !consumer.is_consuming_contour_points ();
+ if (unlikely (!glyph_for_gid (gid).get_points (font, *this, all_points, nullptr, nullptr, nullptr, true, true, phantom_only)))
+ return false;
+
+ if (consumer.is_consuming_contour_points ())
+ {
+ unsigned count = all_points.length;
+ assert (count >= glyf_impl::PHANTOM_COUNT);
+ count -= glyf_impl::PHANTOM_COUNT;
+ for (unsigned point_index = 0; point_index < count; point_index++)
+ consumer.consume_point (all_points[point_index]);
+ consumer.points_end ();
+ }
+
+ /* Where to write phantoms, nullptr if not requested */
+ contour_point_t *phantoms = consumer.get_phantoms_sink ();
+ if (phantoms)
+ for (unsigned i = 0; i < glyf_impl::PHANTOM_COUNT; ++i)
+ phantoms[i] = all_points[all_points.length - glyf_impl::PHANTOM_COUNT + i];
+
+ return true;
+ }
+
+ public:
+
+#ifndef HB_NO_VAR
+ struct points_aggregator_t
+ {
+ hb_font_t *font;
+ hb_glyph_extents_t *extents;
+ contour_point_t *phantoms;
+ bool scaled;
+
+ struct contour_bounds_t
+ {
+ contour_bounds_t () { min_x = min_y = FLT_MAX; max_x = max_y = -FLT_MAX; }
+
+ void add (const contour_point_t &p)
+ {
+ min_x = hb_min (min_x, p.x);
+ min_y = hb_min (min_y, p.y);
+ max_x = hb_max (max_x, p.x);
+ max_y = hb_max (max_y, p.y);
+ }
+
+ bool empty () const { return (min_x >= max_x) || (min_y >= max_y); }
+
+ void get_extents (hb_font_t *font, hb_glyph_extents_t *extents, bool scaled)
+ {
+ if (unlikely (empty ()))
+ {
+ extents->width = 0;
+ extents->x_bearing = 0;
+ extents->height = 0;
+ extents->y_bearing = 0;
+ return;
+ }
+ {
+ extents->x_bearing = roundf (min_x);
+ extents->width = roundf (max_x - extents->x_bearing);
+ extents->y_bearing = roundf (max_y);
+ extents->height = roundf (min_y - extents->y_bearing);
+
+ if (scaled)
+ font->scale_glyph_extents (extents);
+ }
+ }
+
+ protected:
+ float min_x, min_y, max_x, max_y;
+ } bounds;
+
+ points_aggregator_t (hb_font_t *font_, hb_glyph_extents_t *extents_, contour_point_t *phantoms_, bool scaled_)
+ {
+ font = font_;
+ extents = extents_;
+ phantoms = phantoms_;
+ scaled = scaled_;
+ if (extents) bounds = contour_bounds_t ();
+ }
+
+ void consume_point (const contour_point_t &point) { bounds.add (point); }
+ void points_end () { bounds.get_extents (font, extents, scaled); }
+
+ bool is_consuming_contour_points () { return extents; }
+ contour_point_t *get_phantoms_sink () { return phantoms; }
+ };
+
+ unsigned
+ get_advance_with_var_unscaled (hb_font_t *font, hb_codepoint_t gid, bool is_vertical) const
+ {
+ if (unlikely (gid >= num_glyphs)) return 0;
+
+ bool success = false;
+
+ contour_point_t phantoms[glyf_impl::PHANTOM_COUNT];
+ if (font->num_coords)
+ success = get_points (font, gid, points_aggregator_t (font, nullptr, phantoms, false));
+
+ if (unlikely (!success))
+ return
+#ifndef HB_NO_VERTICAL
+ is_vertical ? vmtx->get_advance_without_var_unscaled (gid) :
+#endif
+ hmtx->get_advance_without_var_unscaled (gid);
+
+ float result = is_vertical
+ ? phantoms[glyf_impl::PHANTOM_TOP].y - phantoms[glyf_impl::PHANTOM_BOTTOM].y
+ : phantoms[glyf_impl::PHANTOM_RIGHT].x - phantoms[glyf_impl::PHANTOM_LEFT].x;
+ return hb_clamp (roundf (result), 0.f, (float) UINT_MAX / 2);
+ }
+
+ bool get_leading_bearing_with_var_unscaled (hb_font_t *font, hb_codepoint_t gid, bool is_vertical, int *lsb) const
+ {
+ if (unlikely (gid >= num_glyphs)) return false;
+
+ hb_glyph_extents_t extents;
+
+ contour_point_t phantoms[glyf_impl::PHANTOM_COUNT];
+ if (unlikely (!get_points (font, gid, points_aggregator_t (font, &extents, phantoms, false))))
+ return false;
+
+ *lsb = is_vertical
+ ? roundf (phantoms[glyf_impl::PHANTOM_TOP].y) - extents.y_bearing
+ : roundf (phantoms[glyf_impl::PHANTOM_LEFT].x);
+ return true;
+ }
+#endif
+
+ bool get_leading_bearing_without_var_unscaled (hb_codepoint_t gid, bool is_vertical, int *lsb) const
+ {
+ if (unlikely (gid >= num_glyphs)) return false;
+ if (is_vertical) return false; // TODO Humm, what to do here?
+
+ *lsb = glyph_for_gid (gid).get_header ()->xMin;
+ return true;
+ }
+
+ public:
+ bool get_extents (hb_font_t *font, hb_codepoint_t gid, hb_glyph_extents_t *extents) const
+ {
+ if (unlikely (gid >= num_glyphs)) return false;
+
+#ifndef HB_NO_VAR
+ if (font->num_coords)
+ return get_points (font, gid, points_aggregator_t (font, extents, nullptr, true));
+#endif
+ return glyph_for_gid (gid).get_extents_without_var_scaled (font, *this, extents);
+ }
+
+ bool paint_glyph (hb_font_t *font, hb_codepoint_t gid, hb_paint_funcs_t *funcs, void *data, hb_color_t foreground) const
+ {
+ funcs->push_clip_glyph (data, gid, font);
+ funcs->color (data, true, foreground);
+ funcs->pop_clip (data);
+
+ return true;
+ }
+
+ const glyf_impl::Glyph
+ glyph_for_gid (hb_codepoint_t gid, bool needs_padding_removal = false) const
+ {
+ if (unlikely (gid >= num_glyphs)) return glyf_impl::Glyph ();
+
+ unsigned int start_offset, end_offset;
+
+ if (short_offset)
+ {
+ const HBUINT16 *offsets = (const HBUINT16 *) loca_table->dataZ.arrayZ;
+ start_offset = 2 * offsets[gid];
+ end_offset = 2 * offsets[gid + 1];
+ }
+ else
+ {
+ const HBUINT32 *offsets = (const HBUINT32 *) loca_table->dataZ.arrayZ;
+ start_offset = offsets[gid];
+ end_offset = offsets[gid + 1];
+ }
+
+ if (unlikely (start_offset > end_offset || end_offset > glyf_table.get_length ()))
+ return glyf_impl::Glyph ();
+
+ glyf_impl::Glyph glyph (hb_bytes_t ((const char *) this->glyf_table + start_offset,
+ end_offset - start_offset), gid);
+ return needs_padding_removal ? glyf_impl::Glyph (glyph.trim_padding (), gid) : glyph;
+ }
+
+ bool
+ get_path (hb_font_t *font, hb_codepoint_t gid, hb_draw_session_t &draw_session) const
+ { return get_points (font, gid, glyf_impl::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;
+};
+
+
+inline bool
+glyf::_populate_subset_glyphs (const hb_subset_plan_t *plan,
+ hb_font_t *font,
+ hb_vector_t<glyf_impl::SubsetGlyph>& glyphs /* OUT */) const
+{
+ OT::glyf_accelerator_t glyf (plan->source);
+ unsigned num_glyphs = plan->num_output_glyphs ();
+ if (!glyphs.resize (num_glyphs)) return false;
+
+ for (auto p : plan->glyph_map->iter ())
+ {
+ unsigned new_gid = p.second;
+ glyf_impl::SubsetGlyph& subset_glyph = glyphs.arrayZ[new_gid];
+ subset_glyph.old_gid = p.first;
+
+ if (unlikely (new_gid == 0 &&
+ !(plan->flags & HB_SUBSET_FLAGS_NOTDEF_OUTLINE)) &&
+ !plan->normalized_coords)
+ subset_glyph.source_glyph = glyf_impl::Glyph ();
+ else
+ {
+ /* If plan has an accelerator, the preprocessing step already trimmed glyphs.
+ * Don't trim them again! */
+ subset_glyph.source_glyph = glyf.glyph_for_gid (subset_glyph.old_gid, !plan->accelerator);
+ }
+
+ if (plan->flags & HB_SUBSET_FLAGS_NO_HINTING)
+ subset_glyph.drop_hints_bytes ();
+ else
+ subset_glyph.dest_start = subset_glyph.source_glyph.get_bytes ();
+
+ if (font)
+ {
+ if (unlikely (!subset_glyph.compile_bytes_with_deltas (plan, font, glyf)))
+ {
+ // when pinned at default, only bounds are updated, thus no need to free
+ if (!plan->pinned_at_default)
+ _free_compiled_subset_glyphs (glyphs);
+ return false;
+ }
+ }
+ }
+ return true;
+}
+
+inline hb_font_t *
+glyf::_create_font_for_instancing (const hb_subset_plan_t *plan) const
+{
+ hb_font_t *font = hb_font_create (plan->source);
+ if (unlikely (font == hb_font_get_empty ())) return nullptr;
+
+ hb_vector_t<hb_variation_t> vars;
+ if (unlikely (!vars.alloc (plan->user_axes_location.get_population (), true)))
+ {
+ hb_font_destroy (font);
+ return nullptr;
+ }
+
+ for (auto _ : plan->user_axes_location)
+ {
+ hb_variation_t var;
+ var.tag = _.first;
+ var.value = _.second;
+ vars.push (var);
+ }
+
+#ifndef HB_NO_VAR
+ hb_font_set_variations (font, vars.arrayZ, plan->user_axes_location.get_population ());
+#endif
+ return font;
+}
+
+
+} /* namespace OT */
+
+
+#endif /* OT_GLYF_GLYF_HH */
diff --git a/gfx/harfbuzz/src/OT/glyf/loca.hh b/gfx/harfbuzz/src/OT/glyf/loca.hh
new file mode 100644
index 0000000000..4481cba8ed
--- /dev/null
+++ b/gfx/harfbuzz/src/OT/glyf/loca.hh
@@ -0,0 +1,43 @@
+#ifndef OT_GLYF_LOCA_HH
+#define OT_GLYF_LOCA_HH
+
+
+#include "../../hb-open-type.hh"
+
+
+namespace OT {
+
+
+/*
+ * loca -- Index to Location
+ * https://docs.microsoft.com/en-us/typography/opentype/spec/loca
+ */
+#define HB_OT_TAG_loca HB_TAG('l','o','c','a')
+
+struct loca
+{
+ friend struct glyf;
+ friend struct glyf_accelerator_t;
+
+ static constexpr hb_tag_t tableTag = HB_OT_TAG_loca;
+
+ bool sanitize (hb_sanitize_context_t *c HB_UNUSED) const
+ {
+ TRACE_SANITIZE (this);
+ return_trace (true);
+ }
+
+ protected:
+ UnsizedArrayOf<HBUINT8>
+ dataZ; /* Location data. */
+ public:
+ DEFINE_SIZE_MIN (0); /* In reality, this is UNBOUNDED() type; but since we always
+ * check the size externally, allow Null() object of it by
+ * defining it _MIN instead. */
+};
+
+
+} /* namespace OT */
+
+
+#endif /* OT_GLYF_LOCA_HH */
diff --git a/gfx/harfbuzz/src/OT/glyf/path-builder.hh b/gfx/harfbuzz/src/OT/glyf/path-builder.hh
new file mode 100644
index 0000000000..f7f732d336
--- /dev/null
+++ b/gfx/harfbuzz/src/OT/glyf/path-builder.hh
@@ -0,0 +1,189 @@
+#ifndef OT_GLYF_PATH_BUILDER_HH
+#define OT_GLYF_PATH_BUILDER_HH
+
+
+#include "../../hb.hh"
+
+
+namespace OT {
+namespace glyf_impl {
+
+
+struct path_builder_t
+{
+ hb_font_t *font;
+ hb_draw_session_t *draw_session;
+
+ struct optional_point_t
+ {
+ optional_point_t () {}
+ optional_point_t (float x_, float y_) : has_data (true), x (x_), y (y_) {}
+ operator bool () const { return has_data; }
+
+ bool has_data = false;
+ float x = 0.;
+ float y = 0.;
+
+ optional_point_t lerp (optional_point_t p, float t)
+ { return optional_point_t (x + t * (p.x - x), y + t * (p.y - y)); }
+ } first_oncurve, first_offcurve, first_offcurve2, last_offcurve, last_offcurve2;
+
+ path_builder_t (hb_font_t *font_, hb_draw_session_t &draw_session_) :
+ font (font_), draw_session (&draw_session_) {}
+
+ /* based on https://github.com/RazrFalcon/ttf-parser/blob/4f32821/src/glyf.rs#L287
+ See also:
+ * https://developer.apple.com/fonts/TrueType-Reference-Manual/RM01/Chap1.html
+ * https://stackoverflow.com/a/20772557
+ *
+ * Cubic support added. */
+ void consume_point (const contour_point_t &point)
+ {
+ bool is_on_curve = point.flag & glyf_impl::SimpleGlyph::FLAG_ON_CURVE;
+#ifdef HB_NO_CUBIC_GLYF
+ bool is_cubic = false;
+#else
+ bool is_cubic = !is_on_curve && (point.flag & glyf_impl::SimpleGlyph::FLAG_CUBIC);
+#endif
+ optional_point_t p (font->em_fscalef_x (point.x), font->em_fscalef_y (point.y));
+ if (!first_oncurve)
+ {
+ if (is_on_curve)
+ {
+ first_oncurve = p;
+ draw_session->move_to (p.x, p.y);
+ }
+ else
+ {
+ if (is_cubic && !first_offcurve2)
+ {
+ first_offcurve2 = first_offcurve;
+ first_offcurve = p;
+ }
+ else if (first_offcurve)
+ {
+ optional_point_t mid = first_offcurve.lerp (p, .5f);
+ first_oncurve = mid;
+ last_offcurve = p;
+ draw_session->move_to (mid.x, mid.y);
+ }
+ else
+ first_offcurve = p;
+ }
+ }
+ else
+ {
+ if (last_offcurve)
+ {
+ if (is_on_curve)
+ {
+ if (last_offcurve2)
+ {
+ draw_session->cubic_to (last_offcurve2.x, last_offcurve2.y,
+ last_offcurve.x, last_offcurve.y,
+ p.x, p.y);
+ last_offcurve2 = optional_point_t ();
+ }
+ else
+ draw_session->quadratic_to (last_offcurve.x, last_offcurve.y,
+ p.x, p.y);
+ last_offcurve = optional_point_t ();
+ }
+ else
+ {
+ if (is_cubic && !last_offcurve2)
+ {
+ last_offcurve2 = last_offcurve;
+ last_offcurve = p;
+ }
+ else
+ {
+ optional_point_t mid = last_offcurve.lerp (p, .5f);
+
+ if (is_cubic)
+ {
+ draw_session->cubic_to (last_offcurve2.x, last_offcurve2.y,
+ last_offcurve.x, last_offcurve.y,
+ mid.x, mid.y);
+ last_offcurve2 = optional_point_t ();
+ }
+ else
+ draw_session->quadratic_to (last_offcurve.x, last_offcurve.y,
+ mid.x, mid.y);
+ last_offcurve = p;
+ }
+ }
+ }
+ else
+ {
+ if (is_on_curve)
+ draw_session->line_to (p.x, p.y);
+ else
+ last_offcurve = p;
+ }
+ }
+
+ if (point.is_end_point)
+ {
+ if (first_offcurve && last_offcurve)
+ {
+ optional_point_t mid = last_offcurve.lerp (first_offcurve2 ?
+ first_offcurve2 :
+ first_offcurve, .5f);
+ if (last_offcurve2)
+ draw_session->cubic_to (last_offcurve2.x, last_offcurve2.y,
+ last_offcurve.x, last_offcurve.y,
+ mid.x, mid.y);
+ else
+ draw_session->quadratic_to (last_offcurve.x, last_offcurve.y,
+ mid.x, mid.y);
+ last_offcurve = optional_point_t ();
+ }
+ /* now check the rest */
+
+ if (first_offcurve && first_oncurve)
+ {
+ if (first_offcurve2)
+ draw_session->cubic_to (first_offcurve2.x, first_offcurve2.y,
+ first_offcurve.x, first_offcurve.y,
+ first_oncurve.x, first_oncurve.y);
+ else
+ draw_session->quadratic_to (first_offcurve.x, first_offcurve.y,
+ first_oncurve.x, first_oncurve.y);
+ }
+ else if (last_offcurve && first_oncurve)
+ {
+ if (last_offcurve2)
+ draw_session->cubic_to (last_offcurve2.x, last_offcurve2.y,
+ last_offcurve.x, last_offcurve.y,
+ first_oncurve.x, first_oncurve.y);
+ else
+ draw_session->quadratic_to (last_offcurve.x, last_offcurve.y,
+ first_oncurve.x, first_oncurve.y);
+ }
+ else if (first_oncurve)
+ draw_session->line_to (first_oncurve.x, first_oncurve.y);
+ else if (first_offcurve)
+ {
+ float x = first_offcurve.x, y = 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 = last_offcurve2 = optional_point_t ();
+ draw_session->close_path ();
+ }
+ }
+ void points_end () {}
+
+ bool is_consuming_contour_points () { return true; }
+ contour_point_t *get_phantoms_sink () { return nullptr; }
+};
+
+
+} /* namespace glyf_impl */
+} /* namespace OT */
+
+
+#endif /* OT_GLYF_PATH_BUILDER_HH */
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