Update harfbuzz-ng to 0.9.24

third_party/harfbuzz-ng/src/hb-face.cc

+/*
+ * Copyright © 2009  Red Hat, Inc.
+ * Copyright © 2012  Google, Inc.
+ *
+ *  This is part of HarfBuzz, a text shaping library.
+ *
+ * Permission is hereby granted, without written agreement and without
+ * license or royalty fees, to use, copy, modify, and distribute this
+ * software and its documentation for any purpose, provided that the
+ * above copyright notice and the following two paragraphs appear in
+ * all copies of this software.
+ *
+ * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
+ * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
+ * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
+ * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ *
+ * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
+ * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS FOR A PARTICULAR PURPOSE.  THE SOFTWARE PROVIDED HEREUNDER IS
+ * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
+ * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
+ *
+ * Red Hat Author(s): Behdad Esfahbod
+ * Google Author(s): Behdad Esfahbod
+ */
+
+#include "hb-private.hh"
+
+#include "hb-ot-layout-private.hh"
+
+#include "hb-font-private.hh"
+#include "hb-blob.h"
+#include "hb-open-file-private.hh"
+#include "hb-ot-head-table.hh"
+#include "hb-ot-maxp-table.hh"
+
+#include "hb-cache-private.hh"
+
+#include <string.h>
+
+
+/*
+ * hb_face_t
+ */
+
+const hb_face_t _hb_face_nil = {
+  HB_OBJECT_HEADER_STATIC,
+
+  true, /* immutable */
+
+  NULL, /* reference_table_func */
+  NULL, /* user_data */
+  NULL, /* destroy */
+
+  0,    /* index */
+  1000, /* upem */
+  0,    /* num_glyphs */
+
+  {
+#define HB_SHAPER_IMPLEMENT(shaper) HB_SHAPER_DATA_INVALID,
+#include "hb-shaper-list.hh"
+#undef HB_SHAPER_IMPLEMENT
+  },
+
+  NULL, /* shape_plans */
+};
+
+
+/**
+ * hb_face_create_for_tables:
+ * @reference_table_func: (closure user_data) (destroy destroy) (scope notified):
+ * @user_data: 
+ * @destroy: 
+ *
+ * 
+ *
+ * Return value: (transfer full)
+ *
+ * Since: 1.0
+ **/
+hb_face_t *
+hb_face_create_for_tables (hb_reference_table_func_t  reference_table_func,
+                           void                      *user_data,
+                           hb_destroy_func_t          destroy)
+{
+  hb_face_t *face;
+
+  if (!reference_table_func || !(face = hb_object_create<hb_face_t> ())) {
+    if (destroy)
+      destroy (user_data);
+    return hb_face_get_empty ();
+  }
+
+  face->reference_table_func = reference_table_func;
+  face->user_data = user_data;
+  face->destroy = destroy;
+
+  face->upem = 0;
+  face->num_glyphs = (unsigned int) -1;
+
+  return face;
+}
+
+
+typedef struct hb_face_for_data_closure_t {
+  hb_blob_t *blob;
+  unsigned int  index;
+} hb_face_for_data_closure_t;
+
+static hb_face_for_data_closure_t *
+_hb_face_for_data_closure_create (hb_blob_t *blob, unsigned int index)
+{
+  hb_face_for_data_closure_t *closure;
+
+  closure = (hb_face_for_data_closure_t *) malloc (sizeof (hb_face_for_data_closure_t));
+  if (unlikely (!closure))
+    return NULL;
+
+  closure->blob = blob;
+  closure->index = index;
+
+  return closure;
+}
+
+static void
+_hb_face_for_data_closure_destroy (hb_face_for_data_closure_t *closure)
+{
+  hb_blob_destroy (closure->blob);
+  free (closure);
+}
+
+static hb_blob_t *
+_hb_face_for_data_reference_table (hb_face_t *face HB_UNUSED, hb_tag_t tag, void *user_data)
+{
+  hb_face_for_data_closure_t *data = (hb_face_for_data_closure_t *) user_data;
+
+  if (tag == HB_TAG_NONE)
+    return hb_blob_reference (data->blob);
+
+  const OT::OpenTypeFontFile &ot_file = *OT::Sanitizer<OT::OpenTypeFontFile>::lock_instance (data->blob);
+  const OT::OpenTypeFontFace &ot_face = ot_file.get_face (data->index);
+
+  const OT::OpenTypeTable &table = ot_face.get_table_by_tag (tag);
+
+  hb_blob_t *blob = hb_blob_create_sub_blob (data->blob, table.offset, table.length);
+
+  return blob;
+}
+
+/**
+ * hb_face_create: (Xconstructor)
+ * @blob: 
+ * @index: 
+ *
+ * 
+ *
+ * Return value: (transfer full):
+ *
+ * Since: 1.0
+ **/
+hb_face_t *
+hb_face_create (hb_blob_t    *blob,
+                unsigned int  index)
+{
+  hb_face_t *face;
+
+  if (unlikely (!blob || !hb_blob_get_length (blob)))
+    return hb_face_get_empty ();
+
+  hb_face_for_data_closure_t *closure = _hb_face_for_data_closure_create (OT::Sanitizer<OT::OpenTypeFontFile>::sanitize (hb_blob_reference (blob)), index);
+
+  if (unlikely (!closure))
+    return hb_face_get_empty ();
+
+  face = hb_face_create_for_tables (_hb_face_for_data_reference_table,
+                                    closure,
+                                    (hb_destroy_func_t) _hb_face_for_data_closure_destroy);
+
+  hb_face_set_index (face, index);
+
+  return face;
+}
+
+/**
+ * hb_face_get_empty:
+ *
+ * 
+ *
+ * Return value: (transfer full)
+ *
+ * Since: 1.0
+ **/
+hb_face_t *
+hb_face_get_empty (void)
+{
+  return const_cast<hb_face_t *> (&_hb_face_nil);
+}
+
+
+/**
+ * hb_face_reference: (skip)
+ * @face: a face.
+ *
+ * 
+ *
+ * Return value: 
+ *
+ * Since: 1.0
+ **/
+hb_face_t *
+hb_face_reference (hb_face_t *face)
+{
+  return hb_object_reference (face);
+}
+
+/**
+ * hb_face_destroy: (skip)
+ * @face: a face.
+ *
+ * 
+ *
+ * Since: 1.0
+ **/
+void
+hb_face_destroy (hb_face_t *face)
+{
+  if (!hb_object_destroy (face)) return;
+
+  for (hb_face_t::plan_node_t *node = face->shape_plans; node; )
+  {
+    hb_face_t::plan_node_t *next = node->next;
+    hb_shape_plan_destroy (node->shape_plan);
+    free (node);
+    node = next;
+  }
+
+#define HB_SHAPER_IMPLEMENT(shaper) HB_SHAPER_DATA_DESTROY(shaper, face);
+#include "hb-shaper-list.hh"
+#undef HB_SHAPER_IMPLEMENT
+
+  if (face->destroy)
+    face->destroy (face->user_data);
+
+  free (face);
+}
+
+/**
+ * hb_face_set_user_data: (skip)
+ * @face: a face.
+ * @key: 
+ * @data: 
+ * @destroy: 
+ * @replace: 
+ *
+ * 
+ *
+ * Return value: 
+ *
+ * Since: 1.0
+ **/
+hb_bool_t
+hb_face_set_user_data (hb_face_t          *face,
+                       hb_user_data_key_t *key,
+                       void *              data,
+                       hb_destroy_func_t   destroy,
+                       hb_bool_t           replace)
+{
+  return hb_object_set_user_data (face, key, data, destroy, replace);
+}
+
+/**
+ * hb_face_get_user_data: (skip)
+ * @face: a face.
+ * @key: 
+ *
+ * 
+ *
+ * Return value: (transfer none):
+ *
+ * Since: 1.0
+ **/
+void *
+hb_face_get_user_data (hb_face_t          *face,
+                       hb_user_data_key_t *key)
+{
+  return hb_object_get_user_data (face, key);
+}
+
+/**
+ * hb_face_make_immutable:
+ * @face: a face.
+ *
+ * 
+ *
+ * Since: 1.0
+ **/
+void
+hb_face_make_immutable (hb_face_t *face)
+{
+  if (hb_object_is_inert (face))
+    return;
+
+  face->immutable = true;
+}
+
+/**
+ * hb_face_is_immutable:
+ * @face: a face.
+ *
+ * 
+ *
+ * Return value: 
+ *
+ * Since: 1.0
+ **/
+hb_bool_t
+hb_face_is_immutable (hb_face_t *face)
+{
+  return face->immutable;
+}
+
+
+/**
+ * hb_face_reference_table:
+ * @face: a face.
+ * @tag: 
+ *
+ * 
+ *
+ * Return value: (transfer full):
+ *
+ * Since: 1.0
+ **/
+hb_blob_t *
+hb_face_reference_table (hb_face_t *face,
+                         hb_tag_t   tag)
+{
+  return face->reference_table (tag);
+}
+
+/**
+ * hb_face_reference_blob:
+ * @face: a face.
+ *
+ * 
+ *
+ * Return value: (transfer full):
+ *
+ * Since: 1.0
+ **/
+hb_blob_t *
+hb_face_reference_blob (hb_face_t *face)
+{
+  return face->reference_table (HB_TAG_NONE);
+}
+
+/**
+ * hb_face_set_index:
+ * @face: a face.
+ * @index: 
+ *
+ * 
+ *
+ * Since: 1.0
+ **/
+void
+hb_face_set_index (hb_face_t    *face,
+                   unsigned int  index)
+{
+  if (hb_object_is_inert (face))
+    return;
+
+  face->index = index;
+}
+
+/**
+ * hb_face_get_index:
+ * @face: a face.
+ *
+ * 
+ *
+ * Return value: 
+ *
+ * Since: 1.0
+ **/
+unsigned int
+hb_face_get_index (hb_face_t    *face)
+{
+  return face->index;
+}
+
+/**
+ * hb_face_set_upem:
+ * @face: a face.
+ * @upem: 
+ *
+ * 
+ *
+ * Since: 1.0
+ **/
+void
+hb_face_set_upem (hb_face_t    *face,
+                  unsigned int  upem)
+{
+  if (hb_object_is_inert (face))
+    return;
+
+  face->upem = upem;
+}
+
+/**
+ * hb_face_get_upem:
+ * @face: a face.
+ *
+ * 
+ *
+ * Return value: 
+ *
+ * Since: 1.0
+ **/
+unsigned int
+hb_face_get_upem (hb_face_t *face)
+{
+  return face->get_upem ();
+}
+
+void
+hb_face_t::load_upem (void) const
+{
+  hb_blob_t *head_blob = OT::Sanitizer<OT::head>::sanitize (reference_table (HB_OT_TAG_head));
+  const OT::head *head_table = OT::Sanitizer<OT::head>::lock_instance (head_blob);
+  upem = head_table->get_upem ();
+  hb_blob_destroy (head_blob);
+}
+
+/**
+ * hb_face_set_glyph_count:
+ * @face: a face.
+ * @glyph_count: 
+ *
+ * 
+ *
+ * Since: 1.0
+ **/
+void
+hb_face_set_glyph_count (hb_face_t    *face,
+                         unsigned int  glyph_count)
+{
+  if (hb_object_is_inert (face))
+    return;
+
+  face->num_glyphs = glyph_count;
+}
+
+/**
+ * hb_face_get_glyph_count:
+ * @face: a face.
+ *
+ * 
+ *
+ * Return value: 
+ *
+ * Since: 1.0
+ **/
+unsigned int
+hb_face_get_glyph_count (hb_face_t *face)
+{
+  return face->get_num_glyphs ();
+}
+
+void
+hb_face_t::load_num_glyphs (void) const
+{
+  hb_blob_t *maxp_blob = OT::Sanitizer<OT::maxp>::sanitize (reference_table (HB_OT_TAG_maxp));
+  const OT::maxp *maxp_table = OT::Sanitizer<OT::maxp>::lock_instance (maxp_blob);
+  num_glyphs = maxp_table->get_num_glyphs ();
+  hb_blob_destroy (maxp_blob);
+}
+
+