#include "hb-open-file.hh"
#include "hb-ot-face.hh"
#include "hb-ot-cmap-table.hh"
-#include "hb-map.hh"
/**
* More precisely, a font face represents a single face in a binary font file.
* Font faces are typically built from a binary blob and a face index.
* Font faces are used to create fonts.
+ *
+ * A font face can be created from a binary blob using hb_face_create().
+ * The face index is used to select a face from a binary blob that contains
+ * multiple faces. For example, a binary blob that contains both a regular
+ * and a bold face can be used to create two font faces, one for each face
+ * index.
**/
face->user_data = user_data;
face->destroy = destroy;
- face->num_glyphs.set_relaxed (-1);
+ face->num_glyphs = -1;
face->data.init0 (face);
face->table.init0 (face);
}
/**
- * hb_face_create: (Xconstructor)
+ * hb_face_create:
* @blob: #hb_blob_t to work upon
* @index: The index of the face within @blob
*
* a face index into that blob.
*
* The face index is used for blobs of file formats such as TTC and
- * and DFont that can contain more than one face. Face indices within
+ * DFont that can contain more than one face. Face indices within
* such collections are zero-based.
*
* <note>Note: If the blob font format is not a collection, @index
{
if (!hb_object_destroy (face)) return;
+#ifndef HB_NO_SHAPER
for (hb_face_t::plan_node_t *node = face->shape_plans; node; )
{
hb_face_t::plan_node_t *next = node->next;
hb_free (node);
node = next;
}
+#endif
face->data.fini ();
face->table.fini ();
*
* Attaches a user-data key/data pair to the given face object.
*
- * Return value: %true if success, %false otherwise
+ * Return value: `true` if success, `false` otherwise
*
* Since: 0.9.2
**/
*
* Tests whether the given face object is immutable.
*
- * Return value: %true is @face is immutable, %false otherwise
+ * Return value: `true` is @face is immutable, `false` otherwise
*
* Since: 0.9.2
**/
*
* Sets the units-per-em (upem) for a face object to the specified value.
*
+ * This API is used in rare circumstances.
+ *
* Since: 0.9.2
**/
void
if (hb_object_is_immutable (face))
return;
- face->upem.set_relaxed (upem);
+ face->upem = upem;
}
/**
* hb_face_get_upem:
* @face: A face object
*
- * Fetches the units-per-em (upem) value of the specified face object.
+ * Fetches the units-per-em (UPEM) value of the specified face object.
+ *
+ * Typical UPEM values for fonts are 1000, or 2048, but any value
+ * in between 16 and 16,384 is allowed for OpenType fonts.
*
* Return value: The upem value of @face
*
*
* Sets the glyph count for a face object to the specified value.
*
+ * This API is used in rare circumstances.
+ *
* Since: 0.9.7
**/
void
if (hb_object_is_immutable (face))
return;
- face->num_glyphs.set_relaxed (glyph_count);
+ face->num_glyphs = glyph_count;
}
/**
/**
* hb_face_collect_unicodes:
* @face: A face object
- * @out: The set to add Unicode characters to
+ * @out: (out): The set to add Unicode characters to
*
* Collects all of the Unicode characters covered by @face and adds
* them to the #hb_set_t set @out.
face->table.cmap->collect_unicodes (out, face->get_num_glyphs ());
}
/**
+ * hb_face_collect_nominal_glyph_mapping:
+ * @face: A face object
+ * @mapping: (out): The map to add Unicode-to-glyph mapping to
+ * @unicodes: (nullable) (out): The set to add Unicode characters to, or `NULL`
+ *
+ * Collects the mapping from Unicode characters to nominal glyphs of the @face,
+ * and optionally all of the Unicode characters covered by @face.
+ *
+ * Since: 7.0.0
+ */
+void
+hb_face_collect_nominal_glyph_mapping (hb_face_t *face,
+ hb_map_t *mapping,
+ hb_set_t *unicodes)
+{
+ hb_set_t stack_unicodes;
+ if (!unicodes)
+ unicodes = &stack_unicodes;
+ face->table.cmap->collect_mapping (unicodes, mapping, face->get_num_glyphs ());
+}
+/**
* hb_face_collect_variation_selectors:
* @face: A face object
- * @out: The set to add Variation Selector characters to
+ * @out: (out): The set to add Variation Selector characters to
*
* Collects all Unicode "Variation Selector" characters covered by @face and adds
* them to the #hb_set_t set @out.
* hb_face_collect_variation_unicodes:
* @face: A face object
* @variation_selector: The Variation Selector to query
- * @out: The set to add Unicode characters to
+ * @out: (out): The set to add Unicode characters to
*
* Collects all Unicode characters for @variation_selector covered by @face and adds
* them to the #hb_set_t set @out.
face->table.cmap->collect_variation_unicodes (variation_selector, out);
}
#endif
-
-
-/*
- * face-builder: A face that has add_table().
- */
-
-struct hb_face_builder_data_t
-{
- hb_hashmap_t<hb_tag_t, hb_blob_t *> tables;
-};
-
-static int compare_entries (const void* pa, const void* pb)
-{
- const auto& a = * (const hb_pair_t<hb_tag_t, hb_blob_t*> *) pa;
- const auto& b = * (const hb_pair_t<hb_tag_t, hb_blob_t*> *) pb;
-
- /* Order by blob size first (smallest to largest) and then table tag */
-
- if (a.second->length != b.second->length)
- return a.second->length < b.second->length ? -1 : +1;
-
- return a.first < b.first ? -1 : a.first == b.first ? 0 : +1;
-}
-
-static hb_face_builder_data_t *
-_hb_face_builder_data_create ()
-{
- hb_face_builder_data_t *data = (hb_face_builder_data_t *) hb_calloc (1, sizeof (hb_face_builder_data_t));
- if (unlikely (!data))
- return nullptr;
-
- data->tables.init ();
-
- return data;
-}
-
-static void
-_hb_face_builder_data_destroy (void *user_data)
-{
- hb_face_builder_data_t *data = (hb_face_builder_data_t *) user_data;
-
- for (hb_blob_t* b : data->tables.values())
- hb_blob_destroy (b);
-
- data->tables.fini ();
-
- hb_free (data);
-}
-
-static hb_blob_t *
-_hb_face_builder_data_reference_blob (hb_face_builder_data_t *data)
-{
-
- unsigned int table_count = data->tables.get_population ();
- unsigned int face_length = table_count * 16 + 12;
-
- for (hb_blob_t* b : data->tables.values())
- face_length += hb_ceil_to_4 (hb_blob_get_length (b));
-
- char *buf = (char *) hb_malloc (face_length);
- if (unlikely (!buf))
- return nullptr;
-
- hb_serialize_context_t c (buf, face_length);
- c.propagate_error (data->tables);
- OT::OpenTypeFontFile *f = c.start_serialize<OT::OpenTypeFontFile> ();
-
- bool is_cff = (data->tables.has (HB_TAG ('C','F','F',' '))
- || data->tables.has (HB_TAG ('C','F','F','2')));
- hb_tag_t sfnt_tag = is_cff ? OT::OpenTypeFontFile::CFFTag : OT::OpenTypeFontFile::TrueTypeTag;
-
- // Sort the tags so that produced face is deterministic.
- hb_vector_t<hb_pair_t <hb_tag_t, hb_blob_t*>> sorted_entries;
- data->tables.iter () | hb_sink (sorted_entries);
- if (unlikely (sorted_entries.in_error ()))
- {
- hb_free (buf);
- return nullptr;
- }
-
- sorted_entries.qsort (compare_entries);
- bool ret = f->serialize_single (&c, sfnt_tag, + sorted_entries.iter());
-
- c.end_serialize ();
-
- if (unlikely (!ret))
- {
- hb_free (buf);
- return nullptr;
- }
-
- return hb_blob_create (buf, face_length, HB_MEMORY_MODE_WRITABLE, buf, hb_free);
-}
-
-static hb_blob_t *
-_hb_face_builder_reference_table (hb_face_t *face HB_UNUSED, hb_tag_t tag, void *user_data)
-{
- hb_face_builder_data_t *data = (hb_face_builder_data_t *) user_data;
-
- if (!tag)
- return _hb_face_builder_data_reference_blob (data);
-
- return hb_blob_reference (data->tables[tag]);
-}
-
-
-/**
- * hb_face_builder_create:
- *
- * Creates a #hb_face_t that can be used with hb_face_builder_add_table().
- * After tables are added to the face, it can be compiled to a binary
- * font file by calling hb_face_reference_blob().
- *
- * Return value: (transfer full): New face.
- *
- * Since: 1.9.0
- **/
-hb_face_t *
-hb_face_builder_create ()
-{
- hb_face_builder_data_t *data = _hb_face_builder_data_create ();
- if (unlikely (!data)) return hb_face_get_empty ();
-
- return hb_face_create_for_tables (_hb_face_builder_reference_table,
- data,
- _hb_face_builder_data_destroy);
-}
-
-/**
- * hb_face_builder_add_table:
- * @face: A face object created with hb_face_builder_create()
- * @tag: The #hb_tag_t of the table to add
- * @blob: The blob containing the table data to add
- *
- * Add table for @tag with data provided by @blob to the face. @face must
- * be created using hb_face_builder_create().
- *
- * Since: 1.9.0
- **/
-hb_bool_t
-hb_face_builder_add_table (hb_face_t *face, hb_tag_t tag, hb_blob_t *blob)
-{
- if (tag == HB_MAP_VALUE_INVALID)
- return false;
-
- if (unlikely (face->destroy != (hb_destroy_func_t) _hb_face_builder_data_destroy))
- return false;
-
- hb_face_builder_data_t *data = (hb_face_builder_data_t *) face->user_data;
-
- hb_blob_t* previous = data->tables.get (tag);
- if (!data->tables.set (tag, hb_blob_reference (blob)))
- {
- hb_blob_destroy (blob);
- return false;
- }
-
- hb_blob_destroy (previous);
- return true;
-}
projects / platform / upstream / harfbuzz.git / blobdiff