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diff --git a/libs/cairo-1.16.0/src/cairo-font-face.c b/libs/cairo-1.16.0/src/cairo-font-face.c
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-/* -*- Mode: c; c-basic-offset: 4; indent-tabs-mode: t; tab-width: 8; -*- */
-/* cairo - a vector graphics library with display and print output
- *
- * Copyright © 2002 University of Southern California
- * Copyright © 2005 Red Hat Inc.
- *
- * This library is free software; you can redistribute it and/or
- * modify it either under the terms of the GNU Lesser General Public
- * License version 2.1 as published by the Free Software Foundation
- * (the "LGPL") or, at your option, under the terms of the Mozilla
- * Public License Version 1.1 (the "MPL"). If you do not alter this
- * notice, a recipient may use your version of this file under either
- * the MPL or the LGPL.
- *
- * You should have received a copy of the LGPL along with this library
- * in the file COPYING-LGPL-2.1; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
- * You should have received a copy of the MPL along with this library
- * in the file COPYING-MPL-1.1
- *
- * The contents of this file are subject to the Mozilla Public License
- * Version 1.1 (the "License"); you may not use this file except in
- * compliance with the License. You may obtain a copy of the License at
- * http://www.mozilla.org/MPL/
- *
- * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
- * OF ANY KIND, either express or implied. See the LGPL or the MPL for
- * the specific language governing rights and limitations.
- *
- * The Original Code is the cairo graphics library.
- *
- * The Initial Developer of the Original Code is University of Southern
- * California.
- *
- * Contributor(s):
- * Carl D. Worth <cworth@cworth.org>
- * Graydon Hoare <graydon@redhat.com>
- * Owen Taylor <otaylor@redhat.com>
- */
-
-#include "cairoint.h"
-#include "cairo-error-private.h"
-
-/**
- * SECTION:cairo-font-face
- * @Title: cairo_font_face_t
- * @Short_Description: Base class for font faces
- * @See_Also: #cairo_scaled_font_t
- *
- * #cairo_font_face_t represents a particular font at a particular weight,
- * slant, and other characteristic but no size, transformation, or size.
- *
- * Font faces are created using <firstterm>font-backend</firstterm>-specific
- * constructors, typically of the form
- * <function>cairo_<emphasis>backend</emphasis>_font_face_create(<!-- -->)</function>,
- * or implicitly using the <firstterm>toy</firstterm> text API by way of
- * cairo_select_font_face(). The resulting face can be accessed using
- * cairo_get_font_face().
- **/
-
-/* #cairo_font_face_t */
-
-const cairo_font_face_t _cairo_font_face_nil = {
- { 0 }, /* hash_entry */
- CAIRO_STATUS_NO_MEMORY, /* status */
- CAIRO_REFERENCE_COUNT_INVALID, /* ref_count */
- { 0, 0, 0, NULL }, /* user_data */
- NULL
-};
-const cairo_font_face_t _cairo_font_face_nil_file_not_found = {
- { 0 }, /* hash_entry */
- CAIRO_STATUS_FILE_NOT_FOUND, /* status */
- CAIRO_REFERENCE_COUNT_INVALID, /* ref_count */
- { 0, 0, 0, NULL }, /* user_data */
- NULL
-};
-
-cairo_status_t
-_cairo_font_face_set_error (cairo_font_face_t *font_face,
- cairo_status_t status)
-{
- if (status == CAIRO_STATUS_SUCCESS)
- return status;
-
- /* Don't overwrite an existing error. This preserves the first
- * error, which is the most significant. */
- _cairo_status_set_error (&font_face->status, status);
-
- return _cairo_error (status);
-}
-
-void
-_cairo_font_face_init (cairo_font_face_t *font_face,
- const cairo_font_face_backend_t *backend)
-{
- CAIRO_MUTEX_INITIALIZE ();
-
- font_face->status = CAIRO_STATUS_SUCCESS;
- CAIRO_REFERENCE_COUNT_INIT (&font_face->ref_count, 1);
- font_face->backend = backend;
-
- _cairo_user_data_array_init (&font_face->user_data);
-}
-
-/**
- * cairo_font_face_reference:
- * @font_face: a #cairo_font_face_t, (may be %NULL in which case this
- * function does nothing).
- *
- * Increases the reference count on @font_face by one. This prevents
- * @font_face from being destroyed until a matching call to
- * cairo_font_face_destroy() is made.
- *
- * Use cairo_font_face_get_reference_count() to get the number of
- * references to a #cairo_font_face_t.
- *
- * Return value: the referenced #cairo_font_face_t.
- *
- * Since: 1.0
- **/
-cairo_font_face_t *
-cairo_font_face_reference (cairo_font_face_t *font_face)
-{
- if (font_face == NULL ||
- CAIRO_REFERENCE_COUNT_IS_INVALID (&font_face->ref_count))
- return font_face;
-
- /* We would normally assert that we have a reference here but we
- * can't get away with that due to the zombie case as documented
- * in _cairo_ft_font_face_destroy. */
-
- _cairo_reference_count_inc (&font_face->ref_count);
-
- return font_face;
-}
-slim_hidden_def (cairo_font_face_reference);
-
-static inline cairo_bool_t
-__put(cairo_reference_count_t *v)
-{
- int c, old;
-
- c = CAIRO_REFERENCE_COUNT_GET_VALUE(v);
- while (c != 1 && (old = _cairo_atomic_int_cmpxchg_return_old(&v->ref_count, c, c - 1)) != c)
- c = old;
-
- return c != 1;
-}
-
-cairo_bool_t
-_cairo_font_face_destroy (void *abstract_face)
-{
-#if 0 /* Nothing needs to be done, we can just drop the last reference */
- cairo_font_face_t *font_face = abstract_face;
- return _cairo_reference_count_dec_and_test (&font_face->ref_count);
-#endif
- return TRUE;
-}
-
-/**
- * cairo_font_face_destroy:
- * @font_face: a #cairo_font_face_t
- *
- * Decreases the reference count on @font_face by one. If the result
- * is zero, then @font_face and all associated resources are freed.
- * See cairo_font_face_reference().
- *
- * Since: 1.0
- **/
-void
-cairo_font_face_destroy (cairo_font_face_t *font_face)
-{
- if (font_face == NULL ||
- CAIRO_REFERENCE_COUNT_IS_INVALID (&font_face->ref_count))
- return;
-
- assert (CAIRO_REFERENCE_COUNT_HAS_REFERENCE (&font_face->ref_count));
-
- /* We allow resurrection to deal with some memory management for the
- * FreeType backend where cairo_ft_font_face_t and cairo_ft_unscaled_font_t
- * need to effectively mutually reference each other
- */
- if (__put (&font_face->ref_count))
- return;
-
- if (! font_face->backend->destroy (font_face))
- return;
-
- _cairo_user_data_array_fini (&font_face->user_data);
-
- free (font_face);
-}
-slim_hidden_def (cairo_font_face_destroy);
-
-/**
- * cairo_font_face_get_type:
- * @font_face: a font face
- *
- * This function returns the type of the backend used to create
- * a font face. See #cairo_font_type_t for available types.
- *
- * Return value: The type of @font_face.
- *
- * Since: 1.2
- **/
-cairo_font_type_t
-cairo_font_face_get_type (cairo_font_face_t *font_face)
-{
- if (CAIRO_REFERENCE_COUNT_IS_INVALID (&font_face->ref_count))
- return CAIRO_FONT_TYPE_TOY;
-
- return font_face->backend->type;
-}
-
-/**
- * cairo_font_face_get_reference_count:
- * @font_face: a #cairo_font_face_t
- *
- * Returns the current reference count of @font_face.
- *
- * Return value: the current reference count of @font_face. If the
- * object is a nil object, 0 will be returned.
- *
- * Since: 1.4
- **/
-unsigned int
-cairo_font_face_get_reference_count (cairo_font_face_t *font_face)
-{
- if (font_face == NULL ||
- CAIRO_REFERENCE_COUNT_IS_INVALID (&font_face->ref_count))
- return 0;
-
- return CAIRO_REFERENCE_COUNT_GET_VALUE (&font_face->ref_count);
-}
-
-/**
- * cairo_font_face_status:
- * @font_face: a #cairo_font_face_t
- *
- * Checks whether an error has previously occurred for this
- * font face
- *
- * Return value: %CAIRO_STATUS_SUCCESS or another error such as
- * %CAIRO_STATUS_NO_MEMORY.
- *
- * Since: 1.0
- **/
-cairo_status_t
-cairo_font_face_status (cairo_font_face_t *font_face)
-{
- return font_face->status;
-}
-
-/**
- * cairo_font_face_get_user_data:
- * @font_face: a #cairo_font_face_t
- * @key: the address of the #cairo_user_data_key_t the user data was
- * attached to
- *
- * Return user data previously attached to @font_face using the specified
- * key. If no user data has been attached with the given key this
- * function returns %NULL.
- *
- * Return value: the user data previously attached or %NULL.
- *
- * Since: 1.0
- **/
-void *
-cairo_font_face_get_user_data (cairo_font_face_t *font_face,
- const cairo_user_data_key_t *key)
-{
- return _cairo_user_data_array_get_data (&font_face->user_data,
- key);
-}
-slim_hidden_def (cairo_font_face_get_user_data);
-
-/**
- * cairo_font_face_set_user_data:
- * @font_face: a #cairo_font_face_t
- * @key: the address of a #cairo_user_data_key_t to attach the user data to
- * @user_data: the user data to attach to the font face
- * @destroy: a #cairo_destroy_func_t which will be called when the
- * font face is destroyed or when new user data is attached using the
- * same key.
- *
- * Attach user data to @font_face. To remove user data from a font face,
- * call this function with the key that was used to set it and %NULL
- * for @data.
- *
- * Return value: %CAIRO_STATUS_SUCCESS or %CAIRO_STATUS_NO_MEMORY if a
- * slot could not be allocated for the user data.
- *
- * Since: 1.0
- **/
-cairo_status_t
-cairo_font_face_set_user_data (cairo_font_face_t *font_face,
- const cairo_user_data_key_t *key,
- void *user_data,
- cairo_destroy_func_t destroy)
-{
- if (CAIRO_REFERENCE_COUNT_IS_INVALID (&font_face->ref_count))
- return font_face->status;
-
- return _cairo_user_data_array_set_data (&font_face->user_data,
- key, user_data, destroy);
-}
-slim_hidden_def (cairo_font_face_set_user_data);
-
-void
-_cairo_unscaled_font_init (cairo_unscaled_font_t *unscaled_font,
- const cairo_unscaled_font_backend_t *backend)
-{
- CAIRO_REFERENCE_COUNT_INIT (&unscaled_font->ref_count, 1);
- unscaled_font->backend = backend;
-}
-
-cairo_unscaled_font_t *
-_cairo_unscaled_font_reference (cairo_unscaled_font_t *unscaled_font)
-{
- if (unscaled_font == NULL)
- return NULL;
-
- assert (CAIRO_REFERENCE_COUNT_HAS_REFERENCE (&unscaled_font->ref_count));
-
- _cairo_reference_count_inc (&unscaled_font->ref_count);
-
- return unscaled_font;
-}
-
-void
-_cairo_unscaled_font_destroy (cairo_unscaled_font_t *unscaled_font)
-{
- if (unscaled_font == NULL)
- return;
-
- assert (CAIRO_REFERENCE_COUNT_HAS_REFERENCE (&unscaled_font->ref_count));
-
- if (__put (&unscaled_font->ref_count))
- return;
-
- if (! unscaled_font->backend->destroy (unscaled_font))
- return;
-
- free (unscaled_font);
-}
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