--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mupdf-source/thirdparty/harfbuzz/src/OT/glyf/Glyph.hh	Mon Sep 15 11:43:07 2025 +0200
@@ -0,0 +1,463 @@
+#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 {
+
+
+#ifndef HB_GLYF_MAX_POINTS
+#define HB_GLYF_MAX_POINTS 10000
+#endif
+
+
+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, VAR_COMPOSITE };
+
+  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
+  {
+    if (type != VAR_COMPOSITE) return var_composite_iter_t ();
+    return VarCompositeGlyph (*header, bytes).iter ();
+  }
+
+  const hb_bytes_t trim_padding () const
+  {
+    switch (type) {
+    case COMPOSITE: return CompositeGlyph (*header, bytes).trim_padding ();
+    case SIMPLE:    return SimpleGlyph (*header, bytes).trim_padding ();
+    default:        return bytes;
+    }
+  }
+
+  void drop_hints ()
+  {
+    switch (type) {
+    case COMPOSITE: CompositeGlyph (*header, bytes).drop_hints (); return;
+    case SIMPLE:    SimpleGlyph (*header, bytes).drop_hints (); return;
+    default:        return;
+    }
+  }
+
+  void set_overlaps_flag ()
+  {
+    switch (type) {
+    case COMPOSITE: CompositeGlyph (*header, bytes).set_overlaps_flag (); return;
+    case SIMPLE:    SimpleGlyph (*header, bytes).set_overlaps_flag (); return;
+    default:        return;
+    }
+  }
+
+  void drop_hints_bytes (hb_bytes_t &dest_start, hb_bytes_t &dest_end) const
+  {
+    switch (type) {
+    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;
+    }
+  }
+
+  void update_mtx (const hb_subset_plan_t *plan,
+                   int xMin, 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;
+
+    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);
+    if (hori_aw < 0) hori_aw = 0;
+    int lsb = roundf (xMin - leftSideX);
+    plan->hmtx_map->set (new_gid, hb_pair (hori_aw, lsb));
+
+    int 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));
+  }
+
+  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 (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;
+    }
+
+    for (unsigned i = 1; i < all_points.length - 4; 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);
+    }
+
+    update_mtx (plan, roundf (xMin), roundf (yMax), all_points);
+
+    /*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);
+
+    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, deltas;
+    if (!get_points (font, glyf, all_points, &deltas, 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;
+    }
+
+    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 *deltas = 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
+  {
+    if (unlikely (depth > HB_MAX_NESTING_LEVEL)) return false;
+
+    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;
+
+    switch (type) {
+    case SIMPLE:
+      if (unlikely (!SimpleGlyph (*header, bytes).get_contour_points (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;
+      break;
+    }
+#ifndef HB_NO_VAR_COMPOSITES
+    case VAR_COMPOSITE:
+    {
+      for (auto &item : get_var_composite_iterator ())
+        if (unlikely (!item.get_points (points))) return false;
+    }
+#endif
+    default:
+      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 = 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 ());
+#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)
+    {
+      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;
+      }
+    }
+
+    switch (type) {
+    case SIMPLE:
+      if (!inplace)
+	all_points.extend (points.as_array ());
+      break;
+    case COMPOSITE:
+    {
+      contour_point_vector_t comp_points;
+      unsigned int comp_index = 0;
+      for (auto &item : get_composite_iterator ())
+      {
+        comp_points.reset ();
+
+	if (unlikely (!glyf_accelerator.glyph_for_gid (item.get_gid ())
+				       .get_points (font,
+						    glyf_accelerator,
+						    comp_points,
+						    deltas,
+						    shift_points_hori,
+						    use_my_metrics,
+						    phantom_only,
+						    coords,
+						    depth + 1)))
+	  return false;
+
+	/* 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);
+
+	/* Apply translation from gvar */
+	comp_points.translate (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);
+
+	    comp_points.translate (delta);
+	  }
+	}
+
+	all_points.extend (comp_points.as_array ().sub_array (0, comp_points.length - PHANTOM_COUNT));
+
+	if (all_points.length > HB_GLYF_MAX_POINTS)
+	  return false;
+
+	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 ());
+
+        comp_points.reset ();
+
+	coord_setter_t coord_setter (coords);
+	item.set_variations (coord_setter, record_points);
+
+	if (unlikely (!glyf_accelerator.glyph_for_gid (item.get_gid ())
+				       .get_points (font,
+						    glyf_accelerator,
+						    comp_points,
+						    deltas,
+						    shift_points_hori,
+						    use_my_metrics,
+						    phantom_only,
+						    coord_setter.get_coords (),
+						    depth + 1)))
+	  return false;
+
+	/* Apply component transformation */
+	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));
+
+	if (all_points.length > HB_GLYF_MAX_POINTS)
+	  return false;
+
+	points_left += item.get_num_points ();
+      }
+      all_points.extend (phantoms);
+    } break;
+#endif
+    default:
+      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
+       */
+      contour_point_t delta;
+      delta.init (-phantoms[PHANTOM_LEFT].x, 0.f);
+      if (delta.x) all_points.translate (delta);
+    }
+
+    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 () : 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 == -2) type = VAR_COMPOSITE;
+    else type = COMPOSITE; /* negative numbers */
+  }
+
+  protected:
+  hb_bytes_t bytes;
+  const GlyphHeader *header;
+  hb_codepoint_t gid;
+  unsigned type;
+};
+
+
+} /* namespace glyf_impl */
+} /* namespace OT */
+
+
+#endif /* OT_GLYF_GLYPH_HH */