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b=383960, Upgrade cairo to 1.4.8, r=me -- cairo 1.4.8: missed removing cairo-font.c

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vladimir@pobox.com 2007-06-10 17:09:00 -07:00
parent f5bcec18eb
commit 873da75cdb
2 changed files with 0 additions and 517 deletions
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1
gfx/cairo/cairo/src/Makefile.in
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@ -70,7 +70,6 @@ CSRCS = \
cairo-debug.c \
cairo-deflate-stream.c \
cairo-fixed.c \
cairo-font.c \
cairo-font-face.c \
cairo-font-options.c \
cairo-freelist.c \

516
gfx/cairo/cairo/src/cairo-font.c
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@ -1,516 +0,0 @@
/* -*- 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 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"
/* Forward declare so we can use it as an arbitrary backend for
* _cairo_font_face_nil.
*/
static const cairo_font_face_backend_t _cairo_toy_font_face_backend;
/* cairo_font_face_t */
const cairo_font_face_t _cairo_font_face_nil = {
{ 0 }, /* hash_entry */
CAIRO_STATUS_NO_MEMORY, /* status */
CAIRO_REF_COUNT_INVALID, /* ref_count */
{ 0, 0, 0, NULL }, /* user_data */
&_cairo_toy_font_face_backend
};
void
_cairo_font_face_init (cairo_font_face_t *font_face,
const cairo_font_face_backend_t *backend)
{
font_face->status = CAIRO_STATUS_SUCCESS;
font_face->ref_count = 1;
font_face->backend = backend;
_cairo_user_data_array_init (&font_face->user_data);
}
/* This mutex protects both cairo_toy_font_hash_table as well as
reference count manipulations for all cairo_font_face_t. */
CAIRO_MUTEX_DECLARE (_cairo_font_face_mutex);
/**
* 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.
*
* The number of references to a #cairo_font_face_t can be get using
* cairo_font_face_get_reference_count().
*
* Return value: the referenced #cairo_font_face_t.
**/
cairo_font_face_t *
cairo_font_face_reference (cairo_font_face_t *font_face)
{
if (font_face == NULL || font_face->ref_count == CAIRO_REF_COUNT_INVALID)
return font_face;
CAIRO_MUTEX_LOCK (_cairo_font_face_mutex);
/* We would normally assert (font_face->ref_count >0) here but we
* can't get away with that due to the zombie case as documented
* in _cairo_ft_font_face_destroy. */
font_face->ref_count++;
CAIRO_MUTEX_UNLOCK (_cairo_font_face_mutex);
return font_face;
}
slim_hidden_def (cairo_font_face_reference);
/**
* 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().
**/
void
cairo_font_face_destroy (cairo_font_face_t *font_face)
{
if (font_face == NULL || font_face->ref_count == CAIRO_REF_COUNT_INVALID)
return;
CAIRO_MUTEX_LOCK (_cairo_font_face_mutex);
assert (font_face->ref_count > 0);
if (--(font_face->ref_count) > 0) {
CAIRO_MUTEX_UNLOCK (_cairo_font_face_mutex);
return;
}
CAIRO_MUTEX_UNLOCK (_cairo_font_face_mutex);
font_face->backend->destroy (font_face);
/* 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 (font_face->ref_count > 0)
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)
{
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 || font_face->ref_count == CAIRO_REF_COUNT_INVALID)
return 0;
return 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.
**/
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.
**/
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);
}
/**
* 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.
**/
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 (font_face->ref_count == CAIRO_REF_COUNT_INVALID)
return CAIRO_STATUS_NO_MEMORY;
return _cairo_user_data_array_set_data (&font_face->user_data,
key, user_data, destroy);
}
static const cairo_font_face_backend_t _cairo_toy_font_face_backend;
static int
_cairo_toy_font_face_keys_equal (const void *key_a,
const void *key_b);
/* We maintain a hash table from family/weight/slant =>
* cairo_font_face_t for cairo_toy_font_t. The primary purpose of
* this mapping is to provide unique cairo_font_face_t values so that
* our cache and mapping from cairo_font_face_t => cairo_scaled_font_t
* works. Once the corresponding cairo_font_face_t objects fall out of
* downstream caches, we don't need them in this hash table anymore.
*
* Modifications to this hash table are protected by
* _cairo_font_face_mutex.
*/
static cairo_hash_table_t *cairo_toy_font_face_hash_table = NULL;
static cairo_hash_table_t *
_cairo_toy_font_face_hash_table_lock (void)
{
CAIRO_MUTEX_LOCK (_cairo_font_face_mutex);
if (cairo_toy_font_face_hash_table == NULL)
{
cairo_toy_font_face_hash_table =
_cairo_hash_table_create (_cairo_toy_font_face_keys_equal);
if (cairo_toy_font_face_hash_table == NULL) {
CAIRO_MUTEX_UNLOCK (_cairo_font_face_mutex);
return NULL;
}
}
return cairo_toy_font_face_hash_table;
}
static void
_cairo_toy_font_face_hash_table_unlock (void)
{
CAIRO_MUTEX_UNLOCK (_cairo_font_face_mutex);
}
/**
* _cairo_toy_font_face_init_key:
*
* Initialize those portions of cairo_toy_font_face_t needed to use
* it as a hash table key, including the hash code buried away in
* font_face->base.hash_entry. No memory allocation is performed here
* so that no fini call is needed. We do this to make it easier to use
* an automatic cairo_toy_font_face_t variable as a key.
**/
static void
_cairo_toy_font_face_init_key (cairo_toy_font_face_t *key,
const char *family,
cairo_font_slant_t slant,
cairo_font_weight_t weight)
{
unsigned long hash;
key->family = family;
key->owns_family = FALSE;
key->slant = slant;
key->weight = weight;
/* 1607 and 1451 are just a couple of arbitrary primes. */
hash = _cairo_hash_string (family);
hash += ((unsigned long) slant) * 1607;
hash += ((unsigned long) weight) * 1451;
key->base.hash_entry.hash = hash;
}
static cairo_status_t
_cairo_toy_font_face_init (cairo_toy_font_face_t *font_face,
const char *family,
cairo_font_slant_t slant,
cairo_font_weight_t weight)
{
char *family_copy;
family_copy = strdup (family);
if (family_copy == NULL)
return CAIRO_STATUS_NO_MEMORY;
_cairo_toy_font_face_init_key (font_face, family_copy,
slant, weight);
font_face->owns_family = TRUE;
_cairo_font_face_init (&font_face->base, &_cairo_toy_font_face_backend);
return CAIRO_STATUS_SUCCESS;
}
static void
_cairo_toy_font_face_fini (cairo_toy_font_face_t *font_face)
{
/* We assert here that we own font_face->family before casting
* away the const qualifer. */
assert (font_face->owns_family);
free ((char*) font_face->family);
}
static int
_cairo_toy_font_face_keys_equal (const void *key_a,
const void *key_b)
{
const cairo_toy_font_face_t *face_a = key_a;
const cairo_toy_font_face_t *face_b = key_b;
return (strcmp (face_a->family, face_b->family) == 0 &&
face_a->slant == face_b->slant &&
face_a->weight == face_b->weight);
}
/**
* _cairo_toy_font_face_create:
* @family: a font family name, encoded in UTF-8
* @slant: the slant for the font
* @weight: the weight for the font
*
* Creates a font face from a triplet of family, slant, and weight.
* These font faces are used in implementation of the the #cairo_t "toy"
* font API.
*
* Return value: a newly created #cairo_font_face_t, destroy with
* cairo_font_face_destroy()
**/
cairo_font_face_t *
_cairo_toy_font_face_create (const char *family,
cairo_font_slant_t slant,
cairo_font_weight_t weight)
{
cairo_status_t status;
cairo_toy_font_face_t key, *font_face;
cairo_hash_table_t *hash_table;
hash_table = _cairo_toy_font_face_hash_table_lock ();
if (hash_table == NULL)
goto UNWIND;
_cairo_toy_font_face_init_key (&key, family, slant, weight);
/* Return existing font_face if it exists in the hash table. */
if (_cairo_hash_table_lookup (hash_table,
&key.base.hash_entry,
(cairo_hash_entry_t **) &font_face))
{
/* We increment the reference count here manually to avoid
double-locking. */
font_face->base.ref_count++;
_cairo_toy_font_face_hash_table_unlock ();
return &font_face->base;
}
/* Otherwise create it and insert into hash table. */
font_face = malloc (sizeof (cairo_toy_font_face_t));
if (font_face == NULL)
goto UNWIND_HASH_TABLE_LOCK;
status = _cairo_toy_font_face_init (font_face, family, slant, weight);
if (status)
goto UNWIND_FONT_FACE_MALLOC;
status = _cairo_hash_table_insert (hash_table, &font_face->base.hash_entry);
if (status)
goto UNWIND_FONT_FACE_INIT;
_cairo_toy_font_face_hash_table_unlock ();
return &font_face->base;
UNWIND_FONT_FACE_INIT:
UNWIND_FONT_FACE_MALLOC:
free (font_face);
UNWIND_HASH_TABLE_LOCK:
_cairo_toy_font_face_hash_table_unlock ();
UNWIND:
return (cairo_font_face_t*) &_cairo_font_face_nil;
}
static void
_cairo_toy_font_face_destroy (void *abstract_face)
{
cairo_toy_font_face_t *font_face = abstract_face;
cairo_hash_table_t *hash_table;
if (font_face == NULL)
return;
hash_table = _cairo_toy_font_face_hash_table_lock ();
/* All created objects must have been mapped in the hash table. */
assert (hash_table != NULL);
_cairo_hash_table_remove (hash_table, &font_face->base.hash_entry);
_cairo_toy_font_face_hash_table_unlock ();
_cairo_toy_font_face_fini (font_face);
}
static cairo_status_t
_cairo_toy_font_face_scaled_font_create (void *abstract_font_face,
const cairo_matrix_t *font_matrix,
const cairo_matrix_t *ctm,
const cairo_font_options_t *options,
cairo_scaled_font_t **scaled_font)
{
cairo_toy_font_face_t *font_face = abstract_font_face;
const cairo_scaled_font_backend_t * backend = CAIRO_SCALED_FONT_BACKEND_DEFAULT;
return backend->create_toy (font_face,
font_matrix, ctm, options, scaled_font);
}
static const cairo_font_face_backend_t _cairo_toy_font_face_backend = {
CAIRO_FONT_TYPE_TOY,
_cairo_toy_font_face_destroy,
_cairo_toy_font_face_scaled_font_create
};
void
_cairo_unscaled_font_init (cairo_unscaled_font_t *unscaled_font,
const cairo_unscaled_font_backend_t *backend)
{
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;
unscaled_font->ref_count++;
return unscaled_font;
}
void
_cairo_unscaled_font_destroy (cairo_unscaled_font_t *unscaled_font)
{
if (unscaled_font == NULL)
return;
if (--(unscaled_font->ref_count) > 0)
return;
unscaled_font->backend->destroy (unscaled_font);
free (unscaled_font);
}
void
_cairo_font_reset_static_data (void)
{
_cairo_scaled_font_map_destroy ();
/* We manually acquire the lock rather than calling
* cairo_toy_font_face_hash_table_lock simply to avoid
* creating the table only to destroy it again. */
CAIRO_MUTEX_LOCK (_cairo_font_face_mutex);
_cairo_hash_table_destroy (cairo_toy_font_face_hash_table);
cairo_toy_font_face_hash_table = NULL;
CAIRO_MUTEX_UNLOCK (_cairo_font_face_mutex);
}