* Google Author(s): Behdad Esfahbod
*/
-#include "hb-private.hh"
+#include "hb.hh"
-#include "hb-face-private.hh"
-#include "hb-blob-private.hh"
-#include "hb-open-file-private.hh"
-#include "hb-ot-head-table.hh"
-#include "hb-ot-maxp-table.hh"
+#include "hb-face.hh"
+#include "hb-blob.hh"
+#include "hb-open-file.hh"
+#include "hb-ot-face.hh"
+#include "hb-ot-cmap-table.hh"
+/**
+ * SECTION:hb-face
+ * @title: hb-face
+ * @short_description: Font face objects
+ * @include: hb.h
+ *
+ * Font face is objects represent a single face in a font family.
+ * More exactly, 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.
+ **/
+
/**
- * hb_face_count: Get number of faces on the blob
- * @blob:
+ * hb_face_count:
+ * @blob: a blob.
*
+ * Get number of faces in a blob.
*
- *
- * Return value: Number of faces on the blob
+ * Return value: Number of faces in @blob
*
* Since: 1.7.7
**/
if (unlikely (!blob))
return 0;
- hb_blob_t *sanitized = OT::Sanitizer<OT::OpenTypeFontFile> ().sanitize (blob);
+ /* TODO We shouldn't be sanitizing blob. Port to run sanitizer and return if not sane. */
+ /* Make API signature const after. */
+ hb_blob_t *sanitized = hb_sanitize_context_t ().sanitize_blob<OT::OpenTypeFontFile> (hb_blob_reference (blob));
const OT::OpenTypeFontFile& ot = *sanitized->as<OT::OpenTypeFontFile> ();
+ unsigned int ret = ot.get_face_count ();
+ hb_blob_destroy (sanitized);
- return ot.get_face_count ();
+ return ret;
}
/*
* hb_face_t
*/
-const hb_face_t _hb_face_nil = {
+DEFINE_NULL_INSTANCE (hb_face_t) =
+{
HB_OBJECT_HEADER_STATIC,
- true, /* immutable */
-
nullptr, /* reference_table_func */
nullptr, /* user_data */
nullptr, /* destroy */
0, /* index */
- 1000, /* upem */
- 0, /* num_glyphs */
+ HB_ATOMIC_INT_INIT (1000), /* upem */
+ HB_ATOMIC_INT_INIT (0), /* num_glyphs */
- {
-#define HB_SHAPER_IMPLEMENT(shaper) HB_SHAPER_DATA_INVALID,
-#include "hb-shaper-list.hh"
-#undef HB_SHAPER_IMPLEMENT
- },
-
- nullptr, /* shape_plans */
+ /* Zero for the rest is fine. */
};
face->user_data = user_data;
face->destroy = destroy;
- face->upem = 0;
- face->num_glyphs = (unsigned int) -1;
+ face->num_glyphs.set_relaxed (-1);
+
+ face->data.init0 (face);
+ face->table.init0 (face);
return face;
}
return hb_blob_reference (data->blob);
const OT::OpenTypeFontFile &ot_file = *data->blob->as<OT::OpenTypeFontFile> ();
- const OT::OpenTypeFontFace &ot_face = ot_file.get_face (data->index);
+ unsigned int base_offset;
+ const OT::OpenTypeFontFace &ot_face = ot_file.get_face (data->index, &base_offset);
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);
+ hb_blob_t *blob = hb_blob_create_sub_blob (data->blob, base_offset + table.offset, table.length);
return blob;
}
if (unlikely (!blob))
blob = hb_blob_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);
+ hb_face_for_data_closure_t *closure = _hb_face_for_data_closure_create (hb_sanitize_context_t ().sanitize_blob<OT::OpenTypeFontFile> (hb_blob_reference (blob)), index);
if (unlikely (!closure))
return hb_face_get_empty ();
* Since: 0.9.2
**/
hb_face_t *
-hb_face_get_empty (void)
+hb_face_get_empty ()
{
- return const_cast<hb_face_t *> (&_hb_face_nil);
+ return const_cast<hb_face_t *> (&Null(hb_face_t));
}
node = next;
}
-#define HB_SHAPER_IMPLEMENT(shaper) HB_SHAPER_DATA_DESTROY(shaper, face);
-#include "hb-shaper-list.hh"
-#undef HB_SHAPER_IMPLEMENT
+ face->data.fini ();
+ face->table.fini ();
if (face->destroy)
face->destroy (face->user_data);
* Since: 0.9.2
**/
void *
-hb_face_get_user_data (hb_face_t *face,
+hb_face_get_user_data (const hb_face_t *face,
hb_user_data_key_t *key)
{
return hb_object_get_user_data (face, key);
void
hb_face_make_immutable (hb_face_t *face)
{
- if (unlikely (hb_object_is_inert (face)))
+ if (hb_object_is_immutable (face))
return;
- face->immutable = true;
+ hb_object_make_immutable (face);
}
/**
* Since: 0.9.2
**/
hb_bool_t
-hb_face_is_immutable (hb_face_t *face)
+hb_face_is_immutable (const hb_face_t *face)
{
- return face->immutable;
+ return hb_object_is_immutable (face);
}
* Since: 0.9.2
**/
hb_blob_t *
-hb_face_reference_table (hb_face_t *face,
- hb_tag_t tag)
+hb_face_reference_table (const hb_face_t *face,
+ hb_tag_t tag)
{
return face->reference_table (tag);
}
hb_face_set_index (hb_face_t *face,
unsigned int index)
{
- if (face->immutable)
+ if (hb_object_is_immutable (face))
return;
face->index = index;
* Since: 0.9.2
**/
unsigned int
-hb_face_get_index (hb_face_t *face)
+hb_face_get_index (const hb_face_t *face)
{
return face->index;
}
hb_face_set_upem (hb_face_t *face,
unsigned int upem)
{
- if (face->immutable)
+ if (hb_object_is_immutable (face))
return;
- face->upem = upem;
+ face->upem.set_relaxed (upem);
}
/**
* Since: 0.9.2
**/
unsigned int
-hb_face_get_upem (hb_face_t *face)
+hb_face_get_upem (const 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 = head_blob->as<OT::head> ();
- upem = head_table->get_upem ();
- hb_blob_destroy (head_blob);
-}
-
/**
* hb_face_set_glyph_count:
* @face: a face.
hb_face_set_glyph_count (hb_face_t *face,
unsigned int glyph_count)
{
- if (face->immutable)
+ if (hb_object_is_immutable (face))
return;
- face->num_glyphs = glyph_count;
+ face->num_glyphs.set_relaxed (glyph_count);
}
/**
* Since: 0.9.7
**/
unsigned int
-hb_face_get_glyph_count (hb_face_t *face)
+hb_face_get_glyph_count (const 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 = maxp_blob->as<OT::maxp> ();
- num_glyphs = maxp_table->get_num_glyphs ();
- hb_blob_destroy (maxp_blob);
-}
-
/**
* hb_face_get_table_tags:
* @face: a face.
+ * @start_offset: index of first tag to return.
+ * @table_count: input length of @table_tags array, output number of items written.
+ * @table_tags: array to write tags into.
*
* Retrieves table tags for a face, if possible.
*
* Since: 1.6.0
**/
unsigned int
-hb_face_get_table_tags (hb_face_t *face,
+hb_face_get_table_tags (const hb_face_t *face,
unsigned int start_offset,
unsigned int *table_count, /* IN/OUT */
hb_tag_t *table_tags /* OUT */)
return ot_face.get_table_tags (start_offset, table_count, table_tags);
}
+
+
+/*
+ * Character set.
+ */
+
+
+/**
+ * hb_face_collect_unicodes:
+ * @face: font face.
+ * @out: set to add Unicode characters covered by @face to.
+ *
+ * Since: 1.9.0
+ */
+void
+hb_face_collect_unicodes (hb_face_t *face,
+ hb_set_t *out)
+{
+ face->table.cmap->collect_unicodes (out);
+}
+
+/**
+ * hb_face_collect_variation_selectors:
+ * @face: font face.
+ * @out: set to add Variation Selector characters covered by @face to.
+ *
+ *
+ *
+ * Since: 1.9.0
+ */
+void
+hb_face_collect_variation_selectors (hb_face_t *face,
+ hb_set_t *out)
+{
+ face->table.cmap->collect_variation_selectors (out);
+}
+
+/**
+ * hb_face_collect_variation_unicodes:
+ * @face: font face.
+ * @out: set to add Unicode characters for @variation_selector covered by @face to.
+ *
+ *
+ *
+ * Since: 1.9.0
+ */
+void
+hb_face_collect_variation_unicodes (hb_face_t *face,
+ hb_codepoint_t variation_selector,
+ hb_set_t *out)
+{
+ face->table.cmap->collect_variation_unicodes (variation_selector, out);
+}
+
+
+
+/*
+ * face-builder: A face that has add_table().
+ */
+
+struct hb_face_builder_data_t
+{
+ struct table_entry_t
+ {
+ int cmp (hb_tag_t t) const
+ {
+ if (t < tag) return -1;
+ if (t > tag) return -1;
+ return 0;
+ }
+
+ hb_tag_t tag;
+ hb_blob_t *blob;
+ };
+
+ hb_vector_t<table_entry_t> tables;
+};
+
+static hb_face_builder_data_t *
+_hb_face_builder_data_create ()
+{
+ hb_face_builder_data_t *data = (hb_face_builder_data_t *) 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 (unsigned int i = 0; i < data->tables.length; i++)
+ hb_blob_destroy (data->tables[i].blob);
+
+ data->tables.fini ();
+
+ free (data);
+}
+
+static hb_blob_t *
+_hb_face_builder_data_reference_blob (hb_face_builder_data_t *data)
+{
+
+ unsigned int table_count = data->tables.length;
+ unsigned int face_length = table_count * 16 + 12;
+
+ for (unsigned int i = 0; i < table_count; i++)
+ face_length += hb_ceil_to_4 (hb_blob_get_length (data->tables[i].blob));
+
+ char *buf = (char *) 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.lsearch (HB_TAG ('C','F','F',' ')) || data->tables.lsearch (HB_TAG ('C','F','F','2'));
+ hb_tag_t sfnt_tag = is_cff ? OT::OpenTypeFontFile::CFFTag : OT::OpenTypeFontFile::TrueTypeTag;
+
+ bool ret = f->serialize_single (&c, sfnt_tag, data->tables.as_array ());
+
+ c.end_serialize ();
+
+ if (unlikely (!ret))
+ {
+ free (buf);
+ return nullptr;
+ }
+
+ return hb_blob_create (buf, face_length, HB_MEMORY_MODE_WRITABLE, buf, 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);
+
+ hb_face_builder_data_t::table_entry_t *entry = data->tables.lsearch (tag);
+ if (entry)
+ return hb_blob_reference (entry->blob);
+
+ return nullptr;
+}
+
+
+/**
+ * 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:
+ *
+ * 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 (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_face_builder_data_t::table_entry_t *entry = data->tables.push ();
+
+ entry->tag = tag;
+ entry->blob = hb_blob_reference (blob);
+
+ return true;
+}
projects / platform / upstream / harfbuzz.git / blobdiff