* Google Author(s): Behdad Esfahbod
*/
-#include "hb-open-type-private.hh"
#include "hb-ot-layout-private.hh"
#include "hb-ot-layout-gdef-table.hh"
layout->gpos_blob = OT::Sanitizer<OT::GPOS>::sanitize (face->reference_table (HB_OT_TAG_GPOS));
layout->gpos = OT::Sanitizer<OT::GPOS>::lock_instance (layout->gpos_blob);
- {
- /*
- * The ugly business of blacklisting individual fonts' tables happen here!
- * See this thread for why we finally had to bend in and do this:
- * https://lists.freedesktop.org/archives/harfbuzz/2016-February/005489.html
- */
- unsigned int gdef_len = hb_blob_get_length (layout->gdef_blob);
- unsigned int gsub_len = hb_blob_get_length (layout->gsub_blob);
- unsigned int gpos_len = hb_blob_get_length (layout->gpos_blob);
- if (0
- /* sha1sum:c5ee92f0bca4bfb7d06c4d03e8cf9f9cf75d2e8a Windows 7? timesi.ttf */
- || (442 == gdef_len && 42038 == gpos_len && 2874 == gsub_len)
- /* sha1sum:37fc8c16a0894ab7b749e35579856c73c840867b Windows 7? timesbi.ttf */
- || (430 == gdef_len && 40662 == gpos_len && 2874 == gsub_len)
- /* sha1sum:19fc45110ea6cd3cdd0a5faca256a3797a069a80 Windows 7 timesi.ttf */
- || (442 == gdef_len && 39116 == gpos_len && 2874 == gsub_len)
- /* sha1sum:6d2d3c9ed5b7de87bc84eae0df95ee5232ecde26 Windows 7 timesbi.ttf */
- || (430 == gdef_len && 39374 == gpos_len && 2874 == gsub_len)
- /* sha1sum:8583225a8b49667c077b3525333f84af08c6bcd8 OS X 10.11.3 Times New Roman Italic.ttf */
- || (490 == gdef_len && 41638 == gpos_len && 3046 == gsub_len)
- /* sha1sum:ec0f5a8751845355b7c3271d11f9918a966cb8c9 OS X 10.11.3 Times New Roman Bold Italic.ttf */
- || (478 == gdef_len && 41902 == gpos_len && 3046 == gsub_len)
- )
- {
- /* In certain versions of Times New Roman Italic and Bold Italic,
- * ASCII double quotation mark U+0022, mapped to glyph 5, has wrong
- * glyph class 3 (mark) in GDEF. Nuke the GDEF to avoid zero-width
- * double-quote. See:
- * https://lists.freedesktop.org/archives/harfbuzz/2016-February/005489.html
- */
- if (3 == layout->gdef->get_glyph_class (5))
- layout->gdef = &OT::Null(OT::GDEF);
- }
- }
-
layout->gsub_lookup_count = layout->gsub->get_lookup_count ();
layout->gpos_lookup_count = layout->gpos->get_lookup_count ();
return _get_gdef (face).has_glyph_classes ();
}
-/**
- * hb_ot_layout_get_glyph_class:
- *
- * Since: 0.9.7
- **/
hb_ot_layout_glyph_class_t
hb_ot_layout_get_glyph_class (hb_face_t *face,
hb_codepoint_t glyph)
return (hb_ot_layout_glyph_class_t) _get_gdef (face).get_glyph_class (glyph);
}
-/**
- * hb_ot_layout_get_glyphs_in_class:
- *
- * Since: 0.9.7
- **/
void
hb_ot_layout_get_glyphs_in_class (hb_face_t *face,
hb_ot_layout_glyph_class_t klass,
return g.get_feature_tags (start_offset, feature_count, feature_tags);
}
-hb_bool_t
-hb_ot_layout_table_find_feature (hb_face_t *face,
- hb_tag_t table_tag,
- hb_tag_t feature_tag,
- unsigned int *feature_index)
-{
- ASSERT_STATIC (OT::Index::NOT_FOUND_INDEX == HB_OT_LAYOUT_NO_FEATURE_INDEX);
- const OT::GSUBGPOS &g = get_gsubgpos_table (face, table_tag);
-
- unsigned int num_features = g.get_feature_count ();
- for (unsigned int i = 0; i < num_features; i++)
- {
- if (feature_tag == g.get_feature_tag (i)) {
- if (feature_index) *feature_index = i;
- return true;
- }
- }
-
- if (feature_index) *feature_index = HB_OT_LAYOUT_NO_FEATURE_INDEX;
- return false;
-}
-
unsigned int
hb_ot_layout_script_get_language_tags (hb_face_t *face,
NULL);
}
-/**
- * hb_ot_layout_language_get_required_feature:
- *
- * Since: 0.9.30
- **/
hb_bool_t
hb_ot_layout_language_get_required_feature (hb_face_t *face,
hb_tag_t table_tag,
return false;
}
-/**
- * hb_ot_layout_feature_get_lookups:
- *
- * Since: 0.9.7
- **/
unsigned int
hb_ot_layout_feature_get_lookups (hb_face_t *face,
hb_tag_t table_tag,
return f.get_lookup_indexes (start_offset, lookup_count, lookup_indexes);
}
-/**
- * hb_ot_layout_table_get_lookup_count:
- *
- * Since: 0.9.22
- **/
unsigned int
hb_ot_layout_table_get_lookup_count (hb_face_t *face,
hb_tag_t table_tag)
}
}
-/**
- * hb_ot_layout_collect_lookups:
- *
- * Since: 0.9.8
- **/
void
hb_ot_layout_collect_lookups (hb_face_t *face,
hb_tag_t table_tag,
}
}
-/**
- * hb_ot_layout_lookup_collect_glyphs:
- *
- * Since: 0.9.7
- **/
void
hb_ot_layout_lookup_collect_glyphs (hb_face_t *face,
hb_tag_t table_tag,
return &_get_gsub (face) != &OT::Null(OT::GSUB);
}
-/**
- * hb_ot_layout_lookup_would_substitute:
- *
- * Since: 0.9.7
- **/
hb_bool_t
hb_ot_layout_lookup_would_substitute (hb_face_t *face,
unsigned int lookup_index,
hb_bool_t zero_context)
{
if (unlikely (lookup_index >= hb_ot_layout_from_face (face)->gsub_lookup_count)) return false;
- OT::hb_would_apply_context_t c (face, glyphs, glyphs_length, (bool) zero_context);
+ OT::hb_would_apply_context_t c (face, glyphs, glyphs_length, zero_context);
const OT::SubstLookup& l = hb_ot_layout_from_face (face)->gsub->get_lookup (lookup_index);
OT::GSUB::substitute_start (font, buffer);
}
-/**
- * hb_ot_layout_lookup_substitute_closure:
- *
- * Since: 0.9.7
- **/
+void
+hb_ot_layout_substitute_finish (hb_font_t *font, hb_buffer_t *buffer)
+{
+ OT::GSUB::substitute_finish (font, buffer);
+}
+
void
hb_ot_layout_lookup_substitute_closure (hb_face_t *face,
unsigned int lookup_index,
}
void
-hb_ot_layout_position_finish_advances (hb_font_t *font, hb_buffer_t *buffer)
-{
- OT::GPOS::position_finish_advances (font, buffer);
-}
-
-void
-hb_ot_layout_position_finish_offsets (hb_font_t *font, hb_buffer_t *buffer)
+hb_ot_layout_position_finish (hb_font_t *font, hb_buffer_t *buffer)
{
- OT::GPOS::position_finish_offsets (font, buffer);
+ OT::GPOS::position_finish (font, buffer);
}
-/**
- * hb_ot_layout_get_size_params:
- *
- * Since: 0.9.10
- **/
hb_bool_t
hb_ot_layout_get_size_params (hb_face_t *face,
unsigned int *design_size, /* OUT. May be NULL */
};
-struct hb_get_subtables_context_t :
- OT::hb_dispatch_context_t<hb_get_subtables_context_t, hb_void_t, HB_DEBUG_APPLY>
-{
- template <typename Type>
- static inline bool apply_to (const void *obj, OT::hb_apply_context_t *c)
- {
- const Type *typed_obj = (const Type *) obj;
- return typed_obj->apply (c);
- }
-
- typedef bool (*hb_apply_func_t) (const void *obj, OT::hb_apply_context_t *c);
-
- struct hb_applicable_t
- {
- inline void init (const void *obj_, hb_apply_func_t apply_func_)
- {
- obj = obj_;
- apply_func = apply_func_;
- }
-
- inline bool apply (OT::hb_apply_context_t *c) const { return apply_func (obj, c); }
-
- private:
- const void *obj;
- hb_apply_func_t apply_func;
- };
-
- typedef hb_auto_array_t<hb_applicable_t> array_t;
-
- /* Dispatch interface. */
- inline const char *get_name (void) { return "GET_SUBTABLES"; }
- template <typename T>
- inline return_t dispatch (const T &obj)
- {
- hb_applicable_t *entry = array.push();
- if (likely (entry))
- entry->init (&obj, apply_to<T>);
- return HB_VOID;
- }
- static return_t default_return_value (void) { return HB_VOID; }
- bool stop_sublookup_iteration (return_t r HB_UNUSED) const { return false; }
-
- hb_get_subtables_context_t (array_t &array_) :
- array (array_),
- debug_depth (0) {}
-
- array_t &array;
- unsigned int debug_depth;
-};
-
+template <typename Obj>
static inline bool
apply_forward (OT::hb_apply_context_t *c,
- const hb_ot_layout_lookup_accelerator_t &accel,
- const hb_get_subtables_context_t::array_t &subtables)
+ const Obj &obj,
+ const hb_ot_layout_lookup_accelerator_t &accel)
{
bool ret = false;
hb_buffer_t *buffer = c->buffer;
- while (buffer->idx < buffer->len && !buffer->in_error)
+ while (buffer->idx < buffer->len)
{
- bool applied = false;
if (accel.may_have (buffer->cur().codepoint) &&
(buffer->cur().mask & c->lookup_mask) &&
- c->check_glyph_property (&buffer->cur(), c->lookup_props))
- {
- for (unsigned int i = 0; i < subtables.len; i++)
- if (subtables[i].apply (c))
- {
- applied = true;
- break;
- }
- }
-
- if (applied)
+ c->check_glyph_property (&buffer->cur(), c->lookup_props) &&
+ obj.apply (c))
ret = true;
else
buffer->next_glyph ();
return ret;
}
+template <typename Obj>
static inline bool
apply_backward (OT::hb_apply_context_t *c,
- const hb_ot_layout_lookup_accelerator_t &accel,
- const hb_get_subtables_context_t::array_t &subtables)
+ const Obj &obj,
+ const hb_ot_layout_lookup_accelerator_t &accel)
{
bool ret = false;
hb_buffer_t *buffer = c->buffer;
{
if (accel.may_have (buffer->cur().codepoint) &&
(buffer->cur().mask & c->lookup_mask) &&
- c->check_glyph_property (&buffer->cur(), c->lookup_props))
- {
- for (unsigned int i = 0; i < subtables.len; i++)
- if (subtables[i].apply (c))
- {
- ret = true;
- break;
- }
- }
+ c->check_glyph_property (&buffer->cur(), c->lookup_props) &&
+ obj.apply (c))
+ ret = true;
/* The reverse lookup doesn't "advance" cursor (for good reason). */
buffer->idx--;
return ret;
}
+struct hb_apply_forward_context_t
+{
+ inline const char *get_name (void) { return "APPLY_FORWARD"; }
+ static const unsigned int max_debug_depth = HB_DEBUG_APPLY;
+ typedef bool return_t;
+ template <typename T, typename F>
+ inline bool may_dispatch (const T *obj, const F *format) { return true; }
+ template <typename T>
+ inline return_t dispatch (const T &obj) { return apply_forward (c, obj, accel); }
+ static return_t default_return_value (void) { return false; }
+ bool stop_sublookup_iteration (return_t r HB_UNUSED) const { return true; }
+
+ hb_apply_forward_context_t (OT::hb_apply_context_t *c_,
+ const hb_ot_layout_lookup_accelerator_t &accel_) :
+ c (c_),
+ accel (accel_),
+ debug_depth (0) {}
+
+ OT::hb_apply_context_t *c;
+ const hb_ot_layout_lookup_accelerator_t &accel;
+ unsigned int debug_depth;
+};
+
template <typename Proxy>
static inline void
apply_string (OT::hb_apply_context_t *c,
if (unlikely (!buffer->len || !c->lookup_mask))
return;
- c->set_lookup_props (lookup.get_props ());
-
- hb_get_subtables_context_t::array_t subtables;
- hb_get_subtables_context_t c_get_subtables (subtables);
- lookup.dispatch (&c_get_subtables);
+ c->set_lookup (lookup);
if (likely (!lookup.is_reverse ()))
{
buffer->idx = 0;
bool ret;
- ret = apply_forward (c, accel, subtables);
+ if (lookup.get_subtable_count () == 1)
+ {
+ hb_apply_forward_context_t c_forward (c, accel);
+ ret = lookup.dispatch (&c_forward);
+ }
+ else
+ ret = apply_forward (c, lookup, accel);
if (ret)
{
if (!Proxy::inplace)
buffer->remove_output ();
buffer->idx = buffer->len - 1;
- apply_backward (c, accel, subtables);
+ apply_backward (c, lookup, accel);
}
}
for (; i < stage->last_lookup; i++)
{
unsigned int lookup_index = lookups[table_index][i].index;
- if (!buffer->message (font, "start lookup %d", lookup_index)) continue;
- c.set_lookup_index (lookup_index);
c.set_lookup_mask (lookups[table_index][i].mask);
c.set_auto_zwj (lookups[table_index][i].auto_zwj);
apply_string<Proxy> (&c,
proxy.table.get_lookup (lookup_index),
proxy.accels[lookup_index]);
- (void) buffer->message (font, "end lookup %d", lookup_index);
}
if (stage->pause_func)
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