[toy-font-face] Move toy font face code in a file of its own

1 files changed, 0 insertions, 449 deletions

diff --git a/src/cairo-font-face.c b/src/cairo-font-face.c
index 6161c0ceb..6744899b6 100644
--- a/src/cairo-font-face.c
+++ b/src/cairo-font-face.c
@@ -38,11 +38,8 @@
  *      Owen Taylor <otaylor@redhat.com>
  */
 
-#define _BSD_SOURCE /* for strdup() */
 #include "cairoint.h"
 
-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 = {
@@ -53,38 +50,6 @@ const cairo_font_face_t _cairo_font_face_nil = {
     NULL
 };
 
-static const cairo_font_face_t _cairo_font_face_null_pointer = {
-    { 0 },				/* hash_entry */
-    CAIRO_STATUS_NULL_POINTER,		/* status */
-    CAIRO_REFERENCE_COUNT_INVALID,	/* ref_count */
-    { 0, 0, 0, NULL },			/* user_data */
-    NULL
-};
-
-static const cairo_font_face_t _cairo_font_face_invalid_string = {
-    { 0 },				/* hash_entry */
-    CAIRO_STATUS_INVALID_STRING,	/* status */
-    CAIRO_REFERENCE_COUNT_INVALID,	/* ref_count */
-    { 0, 0, 0, NULL },			/* user_data */
-    NULL
-};
-
-static const cairo_font_face_t _cairo_font_face_invalid_slant = {
-    { 0 },				/* hash_entry */
-    CAIRO_STATUS_INVALID_SLANT,		/* status */
-    CAIRO_REFERENCE_COUNT_INVALID,	/* ref_count */
-    { 0, 0, 0, NULL },			/* user_data */
-    NULL
-};
-
-static const cairo_font_face_t _cairo_font_face_invalid_weight = {
-    { 0 },				/* hash_entry */
-    CAIRO_STATUS_INVALID_WEIGHT,	/* 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)
@@ -287,406 +252,6 @@ cairo_font_face_set_user_data (cairo_font_face_t	   *font_face,
 }
 slim_hidden_def (cairo_font_face_set_user_data);
 
-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;
-
-    assert (hash != 0);
-    key->base.hash_entry.hash = hash;
-}
-
-static cairo_font_face_t *
-_cairo_toy_font_face_create_impl_face (cairo_toy_font_face_t *font_face)
-{
-    const cairo_font_face_backend_t * backend = CAIRO_FONT_FACE_BACKEND_DEFAULT;
-    cairo_font_face_t *impl_font_face;
-    cairo_int_status_t status = CAIRO_INT_STATUS_UNSUPPORTED;
-
-    if (font_face->base.status)
-	return NULL;
-
-    if (backend->create_for_toy != NULL &&
-	0 != strncmp (font_face->family, CAIRO_USER_FONT_FAMILY_DEFAULT,
-		      strlen (CAIRO_USER_FONT_FAMILY_DEFAULT)))
-    {
-	status = backend->create_for_toy (font_face, &impl_font_face);
-    }
-
-    if (status == CAIRO_INT_STATUS_UNSUPPORTED) {
-	backend = &_cairo_user_font_face_backend;
-	status = backend->create_for_toy (font_face, &impl_font_face);
-    }
-
-    if (_cairo_font_face_set_error (&font_face->base, status))
-	return NULL;
-
-    if (_cairo_font_face_set_error (&font_face->base, impl_font_face->status)) {
-	cairo_font_face_destroy (impl_font_face);
-	return NULL;
-    }
-
-    return impl_font_face;
-}
-
-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 (unlikely (family_copy == NULL))
-	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
-
-    _cairo_toy_font_face_init_key (font_face, family_copy,
-				      slant, weight);
-    font_face->owns_family = TRUE;
-
-    font_face->impl_face = NULL;
-
-    _cairo_font_face_init (&font_face->base, &_cairo_toy_font_face_backend);
-
-    font_face->impl_face = _cairo_toy_font_face_create_impl_face (font_face);
-
-    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);
-
-    if (font_face->impl_face)
-	cairo_font_face_destroy (font_face->impl_face);
-}
-
-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.
- *
- * If @family is the zero-length string "", the platform-specific default
- * family is assumed.  The default family then can be queried using
- * cairo_toy_font_face_get_family().
- *
- * The cairo_select_font_face() function uses this to create font faces.
- * See that function for limitations of toy font faces.
- *
- * Return value: a newly created #cairo_font_face_t. Free with
- *  cairo_font_face_destroy() when you are done using it.
- *
- * Since: 1.8
- **/
-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;
-
-    if (family == NULL)
-	return (cairo_font_face_t*) &_cairo_font_face_null_pointer;
-
-    /* Make sure we've got valid UTF-8 for the family */
-    status = _cairo_utf8_to_ucs4 (family, -1, NULL, NULL);
-    if (unlikely (status)) {
-	if (status == CAIRO_STATUS_INVALID_STRING)
-	    return (cairo_font_face_t*) &_cairo_font_face_invalid_string;
-
-	return (cairo_font_face_t*) &_cairo_font_face_nil;
-    }
-
-    switch (slant) {
-	case CAIRO_FONT_SLANT_NORMAL:
-	case CAIRO_FONT_SLANT_ITALIC:
-	case CAIRO_FONT_SLANT_OBLIQUE:
-	    break;
-	default:
-	    return (cairo_font_face_t*) &_cairo_font_face_invalid_slant;
-    }
-
-    switch (weight) {
-	case CAIRO_FONT_WEIGHT_NORMAL:
-	case CAIRO_FONT_WEIGHT_BOLD:
-	    break;
-	default:
-	    return (cairo_font_face_t*) &_cairo_font_face_invalid_weight;
-    }
-
-    if (*family == '\0')
-	family = CAIRO_FONT_FAMILY_DEFAULT;
-
-    hash_table = _cairo_toy_font_face_hash_table_lock ();
-    if (unlikely (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. */
-    font_face = _cairo_hash_table_lookup (hash_table,
-					  &key.base.hash_entry);
-    if (font_face != NULL) {
-	if (font_face->base.status == CAIRO_STATUS_SUCCESS) {
-	    /* We increment the reference count here manually to avoid
-	       double-locking. */
-	    _cairo_reference_count_inc (&font_face->base.ref_count);
-	    _cairo_toy_font_face_hash_table_unlock ();
-	    return &font_face->base;
-	}
-
-	/* remove the bad font from the hash table */
-	_cairo_hash_table_remove (hash_table, &font_face->base.hash_entry);
-	font_face->base.hash_entry.hash = 0;
-    }
-
-    /* Otherwise create it and insert into hash table. */
-    font_face = malloc (sizeof (cairo_toy_font_face_t));
-    if (unlikely (font_face == NULL)) {
-	status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
-	goto UNWIND_HASH_TABLE_LOCK;
-    }
-
-    status = _cairo_toy_font_face_init (font_face, family, slant, weight);
-    if (unlikely (status))
-	goto UNWIND_FONT_FACE_MALLOC;
-
-    status = _cairo_hash_table_insert (hash_table, &font_face->base.hash_entry);
-    if (unlikely (status))
-	goto UNWIND_FONT_FACE_INIT;
-
-    _cairo_toy_font_face_hash_table_unlock ();
-
-    return &font_face->base;
-
- UNWIND_FONT_FACE_INIT:
-    _cairo_toy_font_face_fini (font_face);
- 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;
-}
-slim_hidden_def (cairo_toy_font_face_create);
-
-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 ||
-	    CAIRO_REFERENCE_COUNT_IS_INVALID (&font_face->base.ref_count))
-	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);
-
-    if (font_face->base.hash_entry.hash != 0)
-	_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 = (cairo_toy_font_face_t *) abstract_font_face;
-
-    ASSERT_NOT_REACHED;
-
-    return _cairo_font_face_set_error (&font_face->base, CAIRO_STATUS_FONT_TYPE_MISMATCH);
-}
-
-static cairo_bool_t
-_cairo_font_face_is_toy (cairo_font_face_t *font_face)
-{
-    return font_face->backend == &_cairo_toy_font_face_backend;
-}
-
-cairo_font_face_t *
-_cairo_toy_font_face_get_implementation (cairo_font_face_t *font_face)
-{
-    cairo_toy_font_face_t *toy_font_face = (cairo_toy_font_face_t *) font_face;
-    if (! _cairo_font_face_is_toy (font_face)) {
-	if (_cairo_font_face_set_error (font_face, CAIRO_STATUS_FONT_TYPE_MISMATCH))
-	    return NULL;
-    }
-    return toy_font_face->impl_face ? toy_font_face->impl_face : font_face;
-}
-
-/**
- * cairo_toy_font_face_get_family:
- * @font_face: A toy font face
- *
- * Gets the familly name of a toy font.
- *
- * Return value: The family name.  This string is owned by the font face
- * and remains valid as long as the font face is alive (referenced).
- *
- * Since: 1.8
- **/
-const char *
-cairo_toy_font_face_get_family (cairo_font_face_t *font_face)
-{
-    cairo_toy_font_face_t *toy_font_face = (cairo_toy_font_face_t *) font_face;
-    if (! _cairo_font_face_is_toy (font_face)) {
-	if (_cairo_font_face_set_error (font_face, CAIRO_STATUS_FONT_TYPE_MISMATCH))
-	    return CAIRO_FONT_FAMILY_DEFAULT;
-    }
-    assert (toy_font_face->owns_family);
-    return toy_font_face->family;
-}
-
-/**
- * cairo_toy_font_face_get_slant:
- * @font_face: A toy font face
- *
- * Gets the slant a toy font.
- *
- * Return value: The slant value
- *
- * Since: 1.8
- **/
-cairo_font_slant_t
-cairo_toy_font_face_get_slant (cairo_font_face_t *font_face)
-{
-    cairo_toy_font_face_t *toy_font_face = (cairo_toy_font_face_t *) font_face;
-    if (! _cairo_font_face_is_toy (font_face)) {
-	if (_cairo_font_face_set_error (font_face, CAIRO_STATUS_FONT_TYPE_MISMATCH))
-	    return CAIRO_FONT_SLANT_DEFAULT;
-    }
-    return toy_font_face->slant;
-}
-slim_hidden_def (cairo_toy_font_face_get_slant);
-
-/**
- * cairo_toy_font_face_get_weight:
- * @font_face: A toy font face
- *
- * Gets the weight a toy font.
- *
- * Return value: The weight value
- *
- * Since: 1.8
- **/
-cairo_font_weight_t
-cairo_toy_font_face_get_weight (cairo_font_face_t *font_face)
-{
-    cairo_toy_font_face_t *toy_font_face = (cairo_toy_font_face_t *) font_face;
-    if (! _cairo_font_face_is_toy (font_face)) {
-	if (_cairo_font_face_set_error (font_face, CAIRO_STATUS_FONT_TYPE_MISMATCH))
-	    return CAIRO_FONT_WEIGHT_DEFAULT;
-    }
-    return toy_font_face->weight;
-}
-slim_hidden_def (cairo_toy_font_face_get_weight);
-
-static const cairo_font_face_backend_t _cairo_toy_font_face_backend = {
-    CAIRO_FONT_TYPE_TOY,
-    NULL,					/* create_for_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)
@@ -723,17 +288,3 @@ _cairo_unscaled_font_destroy (cairo_unscaled_font_t *unscaled_font)
 
     free (unscaled_font);
 }
-
-void
-_cairo_font_face_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);
-}