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-rw-r--r--src/3rdparty/harfbuzz-ng/src/OT/glyf/Glyph.hh227
1 files changed, 172 insertions, 55 deletions
diff --git a/src/3rdparty/harfbuzz-ng/src/OT/glyf/Glyph.hh b/src/3rdparty/harfbuzz-ng/src/OT/glyf/Glyph.hh
index 9e15a6e6d0..69a0b625c7 100644
--- a/src/3rdparty/harfbuzz-ng/src/OT/glyf/Glyph.hh
+++ b/src/3rdparty/harfbuzz-ng/src/OT/glyf/Glyph.hh
@@ -103,6 +103,66 @@ struct Glyph
}
}
+ bool is_composite () const
+ { return type == COMPOSITE; }
+
+ bool get_all_points_without_var (const hb_face_t *face,
+ contour_point_vector_t &points /* OUT */) const
+ {
+ switch (type) {
+ case SIMPLE:
+ if (unlikely (!SimpleGlyph (*header, bytes).get_contour_points (points)))
+ return false;
+ break;
+ case COMPOSITE:
+ {
+ for (auto &item : get_composite_iterator ())
+ if (unlikely (!item.get_points (points))) return false;
+ break;
+ }
+#ifndef HB_NO_VAR_COMPOSITES
+ case VAR_COMPOSITE:
+ {
+ for (auto &item : get_var_composite_iterator ())
+ if (unlikely (!item.get_points (points))) return false;
+ break;
+ }
+#endif
+ case EMPTY:
+ break;
+ }
+
+ /* Init phantom points */
+ if (unlikely (!points.resize (points.length + PHANTOM_COUNT))) return false;
+ hb_array_t<contour_point_t> phantoms = points.as_array ().sub_array (points.length - PHANTOM_COUNT, PHANTOM_COUNT);
+ {
+ int lsb = 0;
+ int h_delta = face->table.hmtx->get_leading_bearing_without_var_unscaled (gid, &lsb) ?
+ (int) header->xMin - lsb : 0;
+ HB_UNUSED int tsb = 0;
+ int v_orig = (int) header->yMax +
+#ifndef HB_NO_VERTICAL
+ ((void) face->table.vmtx->get_leading_bearing_without_var_unscaled (gid, &tsb), tsb)
+#else
+ 0
+#endif
+ ;
+ unsigned h_adv = face->table.hmtx->get_advance_without_var_unscaled (gid);
+ unsigned v_adv =
+#ifndef HB_NO_VERTICAL
+ face->table.vmtx->get_advance_without_var_unscaled (gid)
+#else
+ - face->get_upem ()
+#endif
+ ;
+ phantoms[PHANTOM_LEFT].x = h_delta;
+ phantoms[PHANTOM_RIGHT].x = (int) h_adv + h_delta;
+ phantoms[PHANTOM_TOP].y = v_orig;
+ phantoms[PHANTOM_BOTTOM].y = v_orig - (int) v_adv;
+ }
+ return true;
+ }
+
void update_mtx (const hb_subset_plan_t *plan,
int xMin, int xMax,
int yMin, int yMax,
@@ -114,8 +174,8 @@ struct Glyph
if (type != EMPTY)
{
- plan->bounds_width_map.set (new_gid, xMax - xMin);
- plan->bounds_height_map.set (new_gid, yMax - yMin);
+ plan->bounds_width_vec[new_gid] = xMax - xMin;
+ plan->bounds_height_vec[new_gid] = yMax - yMin;
}
unsigned len = all_points.length;
@@ -124,10 +184,12 @@ struct Glyph
float topSideY = all_points[len - 2].y;
float bottomSideY = all_points[len - 1].y;
+ uint32_t hash = hb_hash (new_gid);
+
signed hori_aw = roundf (rightSideX - leftSideX);
if (hori_aw < 0) hori_aw = 0;
int lsb = roundf (xMin - leftSideX);
- plan->hmtx_map.set (new_gid, hb_pair ((unsigned) hori_aw, lsb));
+ plan->hmtx_map.set_with_hash (new_gid, hash, hb_pair ((unsigned) hori_aw, lsb));
//flag value should be computed using non-empty glyphs
if (type != EMPTY && lsb != xMin)
plan->head_maxp_info.allXMinIsLsb = false;
@@ -135,7 +197,7 @@ struct Glyph
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));
+ plan->vmtx_map.set_with_hash (new_gid, hash, hb_pair ((unsigned) vert_aw, tsb));
}
bool compile_header_bytes (const hb_subset_plan_t *plan,
@@ -155,24 +217,28 @@ struct Glyph
{
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);
+ 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);
+ }
}
- update_mtx (plan, roundf (xMin), roundf (xMax), roundf (yMin), roundf (yMax), all_points);
-
- int rounded_xMin = roundf (xMin);
- int rounded_xMax = roundf (xMax);
- int rounded_yMin = roundf (yMin);
- int rounded_yMax = roundf (yMax);
+
+ // 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)
{
@@ -287,6 +353,7 @@ struct Glyph
bool use_my_metrics = true,
bool phantom_only = false,
hb_array_t<int> coords = hb_array_t<int> (),
+ hb_map_t *current_glyphs = nullptr,
unsigned int depth = 0,
unsigned *edge_count = nullptr) const
{
@@ -295,7 +362,11 @@ struct Glyph
if (!edge_count) edge_count = &stack_edge_count;
if (unlikely (*edge_count > HB_GLYF_MAX_EDGE_COUNT)) return false;
(*edge_count)++;
-
+
+ hb_map_t current_glyphs_stack;
+ if (current_glyphs == nullptr)
+ current_glyphs = &current_glyphs_stack;
+
if (head_maxp_info)
{
head_maxp_info->maxComponentDepth = hb_max (head_maxp_info->maxComponentDepth, depth);
@@ -305,9 +376,8 @@ struct Glyph
coords = hb_array (font->coords, font->num_coords);
contour_point_vector_t stack_points;
- bool inplace = type == SIMPLE && all_points.length == 0;
- /* Load into all_points if it's empty, as an optimization. */
- contour_point_vector_t &points = inplace ? all_points : stack_points;
+ contour_point_vector_t &points = type == SIMPLE ? all_points : stack_points;
+ unsigned old_length = points.length;
switch (type) {
case SIMPLE:
@@ -315,7 +385,7 @@ struct Glyph
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 (points, phantom_only)))
+ if (unlikely (!SimpleGlyph (*header, bytes).get_contour_points (all_points, phantom_only)))
return false;
break;
case COMPOSITE:
@@ -329,6 +399,7 @@ struct Glyph
{
for (auto &item : get_var_composite_iterator ())
if (unlikely (!item.get_points (points))) return false;
+ break;
}
#endif
case EMPTY:
@@ -365,9 +436,11 @@ struct Glyph
}
#ifndef HB_NO_VAR
- glyf_accelerator.gvar->apply_deltas_to_points (gid,
- coords,
- points.as_array ());
+ if (coords)
+ glyf_accelerator.gvar->apply_deltas_to_points (gid,
+ coords,
+ points.as_array ().sub_array (old_length),
+ phantom_only && type == SIMPLE);
#endif
// mainly used by CompositeGlyph calculating new X/Y offset value so no need to extend it
@@ -375,27 +448,33 @@ struct Glyph
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);
+ *points_with_deltas = points;
}
switch (type) {
case SIMPLE:
if (depth == 0 && head_maxp_info)
- head_maxp_info->maxPoints = hb_max (head_maxp_info->maxPoints, points.length - 4);
- if (!inplace)
- all_points.extend (points.as_array ());
+ head_maxp_info->maxPoints = hb_max (head_maxp_info->maxPoints, all_points.length - old_length - 4);
break;
case COMPOSITE:
{
- contour_point_vector_t comp_points;
unsigned int comp_index = 0;
for (auto &item : get_composite_iterator ())
{
- comp_points.reset ();
- if (unlikely (!glyf_accelerator.glyph_for_gid (item.get_gid ())
+ hb_codepoint_t item_gid = item.get_gid ();
+
+ if (unlikely (current_glyphs->has (item_gid)))
+ continue;
+
+ current_glyphs->add (item_gid);
+
+ unsigned old_count = all_points.length;
+
+ if (unlikely ((!phantom_only || (use_my_metrics && item.is_use_my_metrics ())) &&
+ !glyf_accelerator.glyph_for_gid (item_gid)
.get_points (font,
glyf_accelerator,
- comp_points,
+ all_points,
points_with_deltas,
head_maxp_info,
composite_contours,
@@ -403,23 +482,32 @@ struct Glyph
use_my_metrics,
phantom_only,
coords,
+ current_glyphs,
depth + 1,
edge_count)))
+ {
+ current_glyphs->del (item_gid);
return false;
+ }
+
+ auto comp_points = all_points.as_array ().sub_array (old_count);
/* Copy phantom points from component if USE_MY_METRICS flag set */
if (use_my_metrics && item.is_use_my_metrics ())
for (unsigned int i = 0; i < PHANTOM_COUNT; i++)
phantoms[i] = comp_points[comp_points.length - PHANTOM_COUNT + i];
- float matrix[4];
- contour_point_t default_trans;
- item.get_transformation (matrix, default_trans);
+ if (comp_points) // Empty in case of phantom_only
+ {
+ 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]);
+ /* Apply component transformation & translation (with deltas applied) */
+ item.transform_points (comp_points, matrix, points[comp_index]);
+ }
- if (item.is_anchored ())
+ if (item.is_anchored () && !phantom_only)
{
unsigned int p1, p2;
item.get_anchor_points (p1, p2);
@@ -429,16 +517,20 @@ struct Glyph
delta.init (all_points[p1].x - comp_points[p2].x,
all_points[p1].y - comp_points[p2].y);
- comp_points.translate (delta);
+ item.translate (delta, comp_points);
}
}
- all_points.extend (comp_points.as_array ().sub_array (0, comp_points.length - PHANTOM_COUNT));
+ all_points.resize (all_points.length - PHANTOM_COUNT);
if (all_points.length > HB_GLYF_MAX_POINTS)
+ {
+ current_glyphs->del (item_gid);
return false;
+ }
comp_index++;
+ current_glyphs->del (item_gid);
}
if (head_maxp_info && depth == 0)
@@ -453,26 +545,37 @@ struct Glyph
#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_codepoint_t item_gid = item.get_gid ();
+
+ if (unlikely (current_glyphs->has (item_gid)))
+ continue;
+
+ current_glyphs->add (item_gid);
+
unsigned item_num_points = item.get_num_points ();
hb_array_t<contour_point_t> record_points = points_left.sub_array (0, item_num_points);
-
- comp_points.reset ();
+ assert (record_points.length == item_num_points);
auto component_coords = coords;
- if (item.is_reset_unspecified_axes ())
+ /* Copying coords is expensive; so we have put an arbitrary
+ * limit on the max number of coords for now. */
+ if (item.is_reset_unspecified_axes () ||
+ coords.length > HB_GLYF_VAR_COMPOSITE_MAX_AXES)
component_coords = hb_array<int> ();
coord_setter_t coord_setter (component_coords);
item.set_variations (coord_setter, record_points);
- if (unlikely (!glyf_accelerator.glyph_for_gid (item.get_gid ())
+ unsigned old_count = all_points.length;
+
+ if (unlikely ((!phantom_only || (use_my_metrics && item.is_use_my_metrics ())) &&
+ !glyf_accelerator.glyph_for_gid (item_gid)
.get_points (font,
glyf_accelerator,
- comp_points,
+ all_points,
points_with_deltas,
head_maxp_info,
nullptr,
@@ -480,24 +583,36 @@ struct Glyph
use_my_metrics,
phantom_only,
coord_setter.get_coords (),
+ current_glyphs,
depth + 1,
edge_count)))
+ {
+ current_glyphs->del (item_gid);
return false;
+ }
+
+ auto comp_points = all_points.as_array ().sub_array (old_count);
/* Apply component transformation */
- item.transform_points (record_points, comp_points);
+ if (comp_points) // Empty in case of phantom_only
+ item.transform_points (record_points, comp_points);
/* Copy phantom points from component if USE_MY_METRICS flag set */
if (use_my_metrics && item.is_use_my_metrics ())
for (unsigned int i = 0; i < PHANTOM_COUNT; i++)
phantoms[i] = comp_points[comp_points.length - PHANTOM_COUNT + i];
- all_points.extend (comp_points.as_array ().sub_array (0, comp_points.length - PHANTOM_COUNT));
+ all_points.resize (all_points.length - PHANTOM_COUNT);
if (all_points.length > HB_GLYF_MAX_POINTS)
+ {
+ current_glyphs->del (item_gid);
return false;
+ }
points_left += item_num_points;
+
+ current_glyphs->del (item_gid);
}
all_points.extend (phantoms);
} break;
@@ -512,9 +627,10 @@ struct Glyph
/* Undocumented rasterizer behavior:
* Shift points horizontally by the updated left side bearing
*/
- contour_point_t delta;
- delta.init (-phantoms[PHANTOM_LEFT].x, 0.f);
- if (delta.x) all_points.translate (delta);
+ int v = -phantoms[PHANTOM_LEFT].x;
+ if (v)
+ for (auto &point : all_points)
+ point.x += v;
}
return !all_points.in_error ();
@@ -545,10 +661,11 @@ struct Glyph
int num_contours = header->numberOfContours;
if (unlikely (num_contours == 0)) type = EMPTY;
else if (num_contours > 0) type = SIMPLE;
+ else if (num_contours == -1) type = COMPOSITE;
#ifndef HB_NO_VAR_COMPOSITES
else if (num_contours == -2) type = VAR_COMPOSITE;
#endif
- else type = COMPOSITE; /* negative numbers */
+ else type = EMPTY; // Spec deviation; Spec says COMPOSITE, but not seen in the wild.
}
protected:
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-11 19:38:25 +0000