cairo_status_t
_cairo_scaled_font_subsets_map_glyph (cairo_scaled_font_subsets_t *subsets,
cairo_scaled_font_t *scaled_font,
unsigned long scaled_font_glyph_index,
const char * utf8,
int utf8_len,
cairo_scaled_font_subsets_glyph_t *subset_glyph)
{
cairo_sub_font_t key, *sub_font;
cairo_scaled_glyph_t *scaled_glyph;
cairo_font_face_t *font_face;
cairo_matrix_t identity;
cairo_font_options_t font_options;
cairo_scaled_font_t *unscaled_font;
cairo_int_status_t status;
int max_glyphs;
cairo_bool_t type1_font;
/* Lookup glyph in unscaled subsets */
if (subsets->type != CAIRO_SUBSETS_SCALED) {
key.is_scaled = FALSE;
_cairo_sub_font_init_key (&key, scaled_font);
sub_font = _cairo_hash_table_lookup (subsets->unscaled_sub_fonts,
&key.base);
if (sub_font != NULL) {
status = _cairo_sub_font_lookup_glyph (sub_font,
scaled_font_glyph_index,
utf8, utf8_len,
subset_glyph);
if (status != CAIRO_INT_STATUS_UNSUPPORTED)
return status;
}
}
/* Lookup glyph in scaled subsets */
key.is_scaled = TRUE;
_cairo_sub_font_init_key (&key, scaled_font);
sub_font = _cairo_hash_table_lookup (subsets->scaled_sub_fonts,
&key.base);
if (sub_font != NULL) {
status = _cairo_sub_font_lookup_glyph (sub_font,
scaled_font_glyph_index,
utf8, utf8_len,
subset_glyph);
if (status != CAIRO_INT_STATUS_UNSUPPORTED)
return status;
}
/* Glyph not found. Determine whether the glyph is outline or
* bitmap and add to the appropriate subset.
*
* glyph_index 0 (the .notdef glyph) is a special case. Some fonts
* will return CAIRO_INT_STATUS_UNSUPPORTED when doing a
* _scaled_glyph_lookup(_GLYPH_INFO_PATH). Type1-fallback creates
* empty glyphs in this case so we can put the glyph in a unscaled
* subset. */
if (scaled_font_glyph_index == 0 ||
_cairo_font_face_is_user (scaled_font->font_face)) {
status = CAIRO_STATUS_SUCCESS;
} else {
_cairo_scaled_font_freeze_cache (scaled_font);
status = _cairo_scaled_glyph_lookup (scaled_font,
scaled_font_glyph_index,
CAIRO_SCALED_GLYPH_INFO_PATH,
&scaled_glyph);
_cairo_scaled_font_thaw_cache (scaled_font);
}
if (_cairo_int_status_is_error (status))
return status;
if (status == CAIRO_INT_STATUS_SUCCESS &&
subsets->type != CAIRO_SUBSETS_SCALED &&
! _cairo_font_face_is_user (scaled_font->font_face))
{
/* Path available. Add to unscaled subset. */
key.is_scaled = FALSE;
_cairo_sub_font_init_key (&key, scaled_font);
sub_font = _cairo_hash_table_lookup (subsets->unscaled_sub_fonts,
&key.base);
if (sub_font == NULL) {
font_face = cairo_scaled_font_get_font_face (scaled_font);
cairo_matrix_init_identity (&identity);
_cairo_font_options_init_default (&font_options);
cairo_font_options_set_hint_style (&font_options, CAIRO_HINT_STYLE_NONE);
cairo_font_options_set_hint_metrics (&font_options, CAIRO_HINT_METRICS_OFF);
unscaled_font = cairo_scaled_font_create (font_face,
&identity,
&identity,
&font_options);
if (unlikely (unscaled_font->status))
return unscaled_font->status;
subset_glyph->is_scaled = FALSE;
type1_font = _cairo_type1_scaled_font_is_type1 (unscaled_font);
if (subsets->type == CAIRO_SUBSETS_COMPOSITE && !type1_font) {
max_glyphs = MAX_GLYPHS_PER_COMPOSITE_FONT;
subset_glyph->is_composite = TRUE;
} else {
max_glyphs = MAX_GLYPHS_PER_SIMPLE_FONT;
subset_glyph->is_composite = FALSE;
}
status = _cairo_sub_font_create (subsets,
unscaled_font,
subsets->num_sub_fonts,
max_glyphs,
subset_glyph->is_scaled,
subset_glyph->is_composite,
&sub_font);
if (unlikely (status)) {
cairo_scaled_font_destroy (unscaled_font);
return status;
}
status = _cairo_hash_table_insert (subsets->unscaled_sub_fonts,
&sub_font->base);
if (unlikely (status)) {
_cairo_sub_font_destroy (sub_font);
return status;
}
if (!subsets->unscaled_sub_fonts_list)
subsets->unscaled_sub_fonts_list = sub_font;
else
subsets->unscaled_sub_fonts_list_end->next = sub_font;
subsets->unscaled_sub_fonts_list_end = sub_font;
subsets->num_sub_fonts++;
}
} else {
/* No path available. Add to scaled subset. */
key.is_scaled = TRUE;
_cairo_sub_font_init_key (&key, scaled_font);
sub_font = _cairo_hash_table_lookup (subsets->scaled_sub_fonts,
&key.base);
if (sub_font == NULL) {
subset_glyph->is_scaled = TRUE;
subset_glyph->is_composite = FALSE;
if (subsets->type == CAIRO_SUBSETS_SCALED)
max_glyphs = INT_MAX;
else
max_glyphs = MAX_GLYPHS_PER_SIMPLE_FONT;
status = _cairo_sub_font_create (subsets,
cairo_scaled_font_reference (scaled_font),
subsets->num_sub_fonts,
max_glyphs,
subset_glyph->is_scaled,
subset_glyph->is_composite,
&sub_font);
if (unlikely (status)) {
cairo_scaled_font_destroy (scaled_font);
return status;
}
status = _cairo_hash_table_insert (subsets->scaled_sub_fonts,
&sub_font->base);
if (unlikely (status)) {
_cairo_sub_font_destroy (sub_font);
return status;
}
if (!subsets->scaled_sub_fonts_list)
subsets->scaled_sub_fonts_list = sub_font;
else
subsets->scaled_sub_fonts_list_end->next = sub_font;
subsets->scaled_sub_fonts_list_end = sub_font;
subsets->num_sub_fonts++;
}
}
return _cairo_sub_font_map_glyph (sub_font,
scaled_font_glyph_index,
utf8, utf8_len,
subset_glyph);
}
static cairo_surface_t *
_similar_surface_create (void *closure,
cairo_content_t content,
double width,
double height,
long uid)
{
struct trace *args = closure;
cairo_surface_t *surface;
struct scache skey, *s;
if (args->observe)
return cairo_surface_create_similar (args->surface,
content, width, height);
if (uid == 0 || surface_cache == NULL)
return args->target->create_similar (args->surface, content, width, height);
skey.entry.hash = uid;
s = _cairo_hash_table_lookup (surface_cache, &skey.entry);
if (s != NULL) {
if (s->content == content &&
s->width == width &&
s->height == height)
{
return cairo_surface_reference (s->surface);
}
/* The surface has been resized, allow the original entry to expire
* as it becomes inactive.
*/
}
surface = args->target->create_similar (args->surface, content, width, height);
s = malloc (sizeof (struct scache));
if (s == NULL)
return surface;
s->entry.hash = uid;
s->content = content;
s->width = width;
s->height = height;
s->surface = surface;
if (_cairo_hash_table_insert (surface_cache, &s->entry)) {
free (s);
} else if (cairo_surface_set_user_data
(surface,
(const cairo_user_data_key_t *) &surface_cache,
s, scache_remove))
{
scache_remove (s);
}
return surface;
}
/**
* cairo_scaled_font_create:
* @font_face: a #cairo_font_face_t
* @font_matrix: font space to user space transformation matrix for the
* font. In the simplest case of a N point font, this matrix is
* just a scale by N, but it can also be used to shear the font
* or stretch it unequally along the two axes. See
* cairo_set_font_matrix().
* @ctm: user to device transformation matrix with which the font will
* be used.
* @options: options to use when getting metrics for the font and
* rendering with it.
*
* Creates a #cairo_scaled_font_t object from a font face and matrices that
* describe the size of the font and the environment in which it will
* be used.
*
* Return value: a newly created #cairo_scaled_font_t. Destroy with
* cairo_scaled_font_destroy()
**/
cairo_scaled_font_t *
cairo_scaled_font_create (cairo_font_face_t *font_face,
const cairo_matrix_t *font_matrix,
const cairo_matrix_t *ctm,
const cairo_font_options_t *options)
{
cairo_status_t status;
cairo_scaled_font_map_t *font_map;
cairo_scaled_font_t key, *scaled_font = NULL;
if (font_face->status)
return (cairo_scaled_font_t *)&_cairo_scaled_font_nil;
font_map = _cairo_scaled_font_map_lock ();
if (font_map == NULL)
goto UNWIND;
_cairo_scaled_font_init_key (&key, font_face,
font_matrix, ctm, options);
/* Return existing scaled_font if it exists in the hash table. */
if (_cairo_hash_table_lookup (font_map->hash_table, &key.hash_entry,
(cairo_hash_entry_t**) &scaled_font))
{
_cairo_scaled_font_map_unlock ();
return cairo_scaled_font_reference (scaled_font);
}
/* Otherwise create it and insert it into the hash table. */
status = font_face->backend->scaled_font_create (font_face, font_matrix,
ctm, options, &scaled_font);
if (status)
goto UNWIND_FONT_MAP_LOCK;
status = _cairo_hash_table_insert (font_map->hash_table,
&scaled_font->hash_entry);
if (status)
goto UNWIND_SCALED_FONT_CREATE;
_cairo_scaled_font_map_unlock ();
return scaled_font;
UNWIND_SCALED_FONT_CREATE:
/* We can't call _cairo_scaled_font_destroy here since it expects
* that the font has already been successfully inserted into the
* hash table. */
_cairo_scaled_font_fini (scaled_font);
free (scaled_font);
UNWIND_FONT_MAP_LOCK:
_cairo_scaled_font_map_unlock ();
UNWIND:
return NULL;
}
/**
* _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;
}
/**
* _cairo_cache_insert:
* @cache: a cache
* @entry: an entry to be inserted
*
* Insert @entry into the cache. If an entry exists in the cache with
* a matching key, then the old entry will be removed first, (and the
* entry_destroy() callback will be called on it).
*
* Return value: %CAIRO_STATUS_SUCCESS if successful or
* %CAIRO_STATUS_NO_MEMORY if insufficient memory is available.
**/
cairo_status_t
_cairo_cache_insert (cairo_cache_t *cache,
cairo_cache_entry_t *entry)
{
cairo_status_t status;
_cairo_cache_shrink_to_accommodate (cache, entry->size);
status = _cairo_hash_table_insert (cache->hash_table,
(cairo_hash_entry_t *) entry);
if (unlikely (status))
return status;
cache->size += entry->size;
return CAIRO_STATUS_SUCCESS;
}
static cairo_status_t
_cairo_sub_font_add_glyph (cairo_sub_font_t *sub_font,
unsigned long scaled_font_glyph_index,
cairo_bool_t is_latin,
int latin_character,
uint32_t unicode,
char *utf8,
int utf8_len,
cairo_sub_font_glyph_t **sub_font_glyph_out)
{
cairo_scaled_glyph_t *scaled_glyph;
cairo_sub_font_glyph_t *sub_font_glyph;
int *num_glyphs_in_subset_ptr;
double x_advance;
double y_advance;
cairo_int_status_t status;
_cairo_scaled_font_freeze_cache (sub_font->scaled_font);
status = _cairo_scaled_glyph_lookup (sub_font->scaled_font,
scaled_font_glyph_index,
CAIRO_SCALED_GLYPH_INFO_METRICS,
&scaled_glyph);
assert (status != CAIRO_INT_STATUS_UNSUPPORTED);
if (unlikely (status)) {
_cairo_scaled_font_thaw_cache (sub_font->scaled_font);
return status;
}
x_advance = scaled_glyph->metrics.x_advance;
y_advance = scaled_glyph->metrics.y_advance;
_cairo_scaled_font_thaw_cache (sub_font->scaled_font);
if (!is_latin && sub_font->num_glyphs_in_current_subset == sub_font->max_glyphs_per_subset)
{
sub_font->current_subset++;
sub_font->num_glyphs_in_current_subset = 0;
}
if (is_latin)
num_glyphs_in_subset_ptr = &sub_font->num_glyphs_in_latin_subset;
else
num_glyphs_in_subset_ptr = &sub_font->num_glyphs_in_current_subset;
/* Reserve first glyph in subset for the .notdef glyph except for
* Type 3 fonts */
if (*num_glyphs_in_subset_ptr == 0 &&
scaled_font_glyph_index != 0 &&
! _cairo_font_face_is_user (sub_font->scaled_font->font_face))
{
status = _cairo_sub_font_add_glyph (sub_font,
0,
is_latin,
0,
0,
NULL,
-1,
&sub_font_glyph);
if (unlikely (status))
return status;
}
sub_font_glyph = _cairo_sub_font_glyph_create (scaled_font_glyph_index,
is_latin ? 0 : sub_font->current_subset,
*num_glyphs_in_subset_ptr,
x_advance,
y_advance,
is_latin ? latin_character : -1,
unicode,
utf8,
utf8_len);
if (unlikely (sub_font_glyph == NULL))
return _cairo_error (CAIRO_STATUS_NO_MEMORY);
status = _cairo_hash_table_insert (sub_font->sub_font_glyphs, &sub_font_glyph->base);
if (unlikely (status)) {
_cairo_sub_font_glyph_destroy (sub_font_glyph);
return status;
}
(*num_glyphs_in_subset_ptr)++;
if (sub_font->is_scaled) {
if (*num_glyphs_in_subset_ptr > sub_font->parent->max_glyphs_per_scaled_subset_used)
sub_font->parent->max_glyphs_per_scaled_subset_used = *num_glyphs_in_subset_ptr;
} else {
if (*num_glyphs_in_subset_ptr > sub_font->parent->max_glyphs_per_unscaled_subset_used)
sub_font->parent->max_glyphs_per_unscaled_subset_used = *num_glyphs_in_subset_ptr;
}
*sub_font_glyph_out = sub_font_glyph;
return CAIRO_STATUS_SUCCESS;
}
cairo_int_status_t
_cairo_scaled_font_subset_create_glyph_names (cairo_scaled_font_subset_t *subset)
{
unsigned int i;
cairo_hash_table_t *names;
cairo_string_entry_t key, *entry;
char buf[30];
char *utf8;
uint16_t *utf16;
int utf16_len;
cairo_status_t status = CAIRO_STATUS_SUCCESS;
names = _cairo_hash_table_create (_cairo_string_equal);
if (unlikely (names == NULL))
return _cairo_error (CAIRO_STATUS_NO_MEMORY);
subset->glyph_names = calloc (subset->num_glyphs, sizeof (char *));
if (unlikely (subset->glyph_names == NULL)) {
status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
goto CLEANUP_HASH;
}
i = 0;
if (! subset->is_scaled) {
subset->glyph_names[0] = strdup (".notdef");
if (unlikely (subset->glyph_names[0] == NULL)) {
status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
goto CLEANUP_HASH;
}
status = create_string_entry (subset->glyph_names[0], &entry);
if (unlikely (status))
goto CLEANUP_HASH;
status = _cairo_hash_table_insert (names, &entry->base);
if (unlikely (status)) {
free (entry);
goto CLEANUP_HASH;
}
i++;
}
for (; i < subset->num_glyphs; i++) {
utf8 = subset->utf8[i];
utf16 = NULL;
utf16_len = 0;
if (utf8 && *utf8) {
status = _cairo_utf8_to_utf16 (utf8, -1, &utf16, &utf16_len);
if (unlikely (status))
goto CLEANUP_HASH;
}
if (utf16_len == 1) {
int ch = _cairo_unicode_to_winansi (utf16[0]);
if (ch > 0 && _cairo_winansi_to_glyphname (ch))
strncpy (buf, _cairo_winansi_to_glyphname (ch), sizeof (buf));
else
snprintf (buf, sizeof (buf), "uni%04X", (int) utf16[0]);
_cairo_string_init_key (&key, buf);
entry = _cairo_hash_table_lookup (names, &key.base);
if (entry != NULL)
snprintf (buf, sizeof (buf), "g%d", i);
} else {
snprintf (buf, sizeof (buf), "g%d", i);
}
free (utf16);
subset->glyph_names[i] = strdup (buf);
if (unlikely (subset->glyph_names[i] == NULL)) {
status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
goto CLEANUP_HASH;
}
status = create_string_entry (subset->glyph_names[i], &entry);
if (unlikely (status))
goto CLEANUP_HASH;
status = _cairo_hash_table_insert (names, &entry->base);
if (unlikely (status)) {
free (entry);
goto CLEANUP_HASH;
}
}
CLEANUP_HASH:
_cairo_hash_table_foreach (names, _pluck_entry, names);
_cairo_hash_table_destroy (names);
if (likely (status == CAIRO_STATUS_SUCCESS))
return CAIRO_STATUS_SUCCESS;
if (subset->glyph_names != NULL) {
for (i = 0; i < subset->num_glyphs; i++) {
free (subset->glyph_names[i]);
}
free (subset->glyph_names);
subset->glyph_names = NULL;
}
return status;
}
cairo_private cairo_status_t
_cairo_scaled_font_subsets_map_glyph (cairo_scaled_font_subsets_t *subsets,
cairo_scaled_font_t *scaled_font,
unsigned long scaled_font_glyph_index,
cairo_scaled_font_subsets_glyph_t *subset_glyph)
{
cairo_sub_font_t key, *sub_font;
cairo_scaled_glyph_t *scaled_glyph;
cairo_font_face_t *font_face;
cairo_matrix_t identity;
cairo_font_options_t font_options;
cairo_scaled_font_t *unscaled_font;
cairo_status_t status;
int max_glyphs;
cairo_bool_t type1_font;
/* Lookup glyph in unscaled subsets */
if (subsets->type != CAIRO_SUBSETS_SCALED) {
key.is_scaled = FALSE;
_cairo_sub_font_init_key (&key, scaled_font);
if (_cairo_hash_table_lookup (subsets->unscaled_sub_fonts, &key.base,
(cairo_hash_entry_t **) &sub_font))
{
status = _cairo_sub_font_lookup_glyph (sub_font,
scaled_font_glyph_index,
subset_glyph);
if (status == CAIRO_STATUS_SUCCESS)
return CAIRO_STATUS_SUCCESS;
}
}
/* Lookup glyph in scaled subsets */
key.is_scaled = TRUE;
_cairo_sub_font_init_key (&key, scaled_font);
if (_cairo_hash_table_lookup (subsets->scaled_sub_fonts, &key.base,
(cairo_hash_entry_t **) &sub_font))
{
status = _cairo_sub_font_lookup_glyph (sub_font,
scaled_font_glyph_index,
subset_glyph);
if (status == CAIRO_STATUS_SUCCESS)
return CAIRO_STATUS_SUCCESS;
}
/* Glyph not found. Determine whether the glyph is outline or
* bitmap and add to the appropriate subset */
status = _cairo_scaled_glyph_lookup (scaled_font,
scaled_font_glyph_index,
CAIRO_SCALED_GLYPH_INFO_PATH,
&scaled_glyph);
if (status && status != CAIRO_INT_STATUS_UNSUPPORTED)
return status;
if (status == 0 && subsets->type != CAIRO_SUBSETS_SCALED) {
/* Path available. Add to unscaled subset. */
key.is_scaled = FALSE;
_cairo_sub_font_init_key (&key, scaled_font);
if (! _cairo_hash_table_lookup (subsets->unscaled_sub_fonts, &key.base,
(cairo_hash_entry_t **) &sub_font))
{
font_face = cairo_scaled_font_get_font_face (scaled_font);
cairo_matrix_init_identity (&identity);
_cairo_font_options_init_default (&font_options);
cairo_font_options_set_hint_style (&font_options, CAIRO_HINT_STYLE_NONE);
cairo_font_options_set_hint_metrics (&font_options, CAIRO_HINT_METRICS_OFF);
unscaled_font = cairo_scaled_font_create (font_face,
&identity,
&identity,
&font_options);
if (unscaled_font->status)
return unscaled_font->status;
subset_glyph->is_scaled = FALSE;
type1_font = FALSE;
#if CAIRO_HAS_FT_FONT
type1_font = _cairo_type1_scaled_font_is_type1 (unscaled_font);
#endif
if (subsets->type == CAIRO_SUBSETS_COMPOSITE && !type1_font) {
max_glyphs = MAX_GLYPHS_PER_COMPOSITE_FONT;
subset_glyph->is_composite = TRUE;
} else {
max_glyphs = MAX_GLYPHS_PER_SIMPLE_FONT;
subset_glyph->is_composite = FALSE;
}
sub_font = _cairo_sub_font_create (subsets,
unscaled_font,
subsets->num_sub_fonts++,
max_glyphs,
subset_glyph->is_scaled,
subset_glyph->is_composite);
if (sub_font == NULL) {
cairo_scaled_font_destroy (unscaled_font);
return CAIRO_STATUS_NO_MEMORY;
}
status = _cairo_hash_table_insert (subsets->unscaled_sub_fonts,
&sub_font->base);
if (status) {
_cairo_sub_font_destroy (sub_font);
return status;
}
}
} else {
/* No path available. Add to scaled subset. */
key.is_scaled = TRUE;
_cairo_sub_font_init_key (&key, scaled_font);
if (! _cairo_hash_table_lookup (subsets->scaled_sub_fonts, &key.base,
(cairo_hash_entry_t **) &sub_font))
{
subset_glyph->is_scaled = TRUE;
subset_glyph->is_composite = FALSE;
if (subsets->type == CAIRO_SUBSETS_SCALED)
max_glyphs = INT_MAX;
else
max_glyphs = MAX_GLYPHS_PER_SIMPLE_FONT;
sub_font = _cairo_sub_font_create (subsets,
cairo_scaled_font_reference (scaled_font),
subsets->num_sub_fonts++,
max_glyphs,
subset_glyph->is_scaled,
subset_glyph->is_composite);
if (sub_font == NULL) {
cairo_scaled_font_destroy (scaled_font);
return CAIRO_STATUS_NO_MEMORY;
}
status = _cairo_hash_table_insert (subsets->scaled_sub_fonts,
&sub_font->base);
if (status) {
_cairo_sub_font_destroy (sub_font);
return status;
}
}
}
return _cairo_sub_font_map_glyph (sub_font,
scaled_font_glyph_index,
subset_glyph);
}
static cairo_status_t
_cairo_sub_font_map_glyph (cairo_sub_font_t *sub_font,
unsigned long scaled_font_glyph_index,
cairo_scaled_font_subsets_glyph_t *subset_glyph)
{
cairo_sub_font_glyph_t key, *sub_font_glyph;
cairo_status_t status;
cairo_scaled_glyph_t *scaled_glyph;
_cairo_sub_font_glyph_init_key (&key, scaled_font_glyph_index);
if (! _cairo_hash_table_lookup (sub_font->sub_font_glyphs, &key.base,
(cairo_hash_entry_t **) &sub_font_glyph))
{
if (sub_font->num_glyphs_in_current_subset == sub_font->max_glyphs_per_subset)
{
sub_font->current_subset++;
sub_font->num_glyphs_in_current_subset = 0;
if (sub_font->parent->type != CAIRO_SUBSETS_SCALED) {
/* Reserve first glyph in subset for the .notdef glyph */
sub_font->num_glyphs_in_current_subset++;
}
}
status = _cairo_scaled_glyph_lookup (sub_font->scaled_font,
scaled_font_glyph_index,
CAIRO_SCALED_GLYPH_INFO_METRICS,
&scaled_glyph);
if (status)
return status;
sub_font_glyph = _cairo_sub_font_glyph_create (scaled_font_glyph_index,
sub_font->current_subset,
sub_font->num_glyphs_in_current_subset++,
scaled_glyph->metrics.x_advance);
if (sub_font_glyph == NULL)
return CAIRO_STATUS_NO_MEMORY;
if (sub_font->is_scaled)
{
if (sub_font->num_glyphs_in_current_subset > sub_font->parent->max_glyphs_per_scaled_subset_used)
sub_font->parent->max_glyphs_per_scaled_subset_used = sub_font->num_glyphs_in_current_subset;
}
else
{
if (sub_font->num_glyphs_in_current_subset > sub_font->parent->max_glyphs_per_unscaled_subset_used)
sub_font->parent->max_glyphs_per_unscaled_subset_used = sub_font->num_glyphs_in_current_subset;
}
status = _cairo_hash_table_insert (sub_font->sub_font_glyphs, &sub_font_glyph->base);
if (status) {
_cairo_sub_font_glyph_destroy (sub_font_glyph);
return status;
}
}
subset_glyph->font_id = sub_font->font_id;
subset_glyph->subset_id = sub_font_glyph->subset_id;
subset_glyph->subset_glyph_index = sub_font_glyph->subset_glyph_index;
subset_glyph->is_scaled = sub_font->is_scaled;
subset_glyph->is_composite = sub_font->is_composite;
subset_glyph->x_advance = sub_font_glyph->x_advance;
return CAIRO_STATUS_SUCCESS;
}
static cairo_status_t
_cairo_sub_font_map_glyph (cairo_sub_font_t *sub_font,
unsigned long scaled_font_glyph_index,
const char *utf8,
int utf8_len,
cairo_scaled_font_subsets_glyph_t *subset_glyph)
{
cairo_sub_font_glyph_t key, *sub_font_glyph;
cairo_status_t status;
_cairo_sub_font_glyph_init_key (&key, scaled_font_glyph_index);
sub_font_glyph = _cairo_hash_table_lookup (sub_font->sub_font_glyphs,
&key.base);
if (sub_font_glyph == NULL) {
cairo_scaled_glyph_t *scaled_glyph;
if (sub_font->num_glyphs_in_current_subset == sub_font->max_glyphs_per_subset)
{
cairo_scaled_font_subsets_glyph_t tmp_subset_glyph;
sub_font->current_subset++;
sub_font->num_glyphs_in_current_subset = 0;
/* Reserve first glyph in subset for the .notdef glyph
* except for Type 3 fonts */
if (! _cairo_font_face_is_user (sub_font->scaled_font->font_face)) {
status = _cairo_sub_font_map_glyph (sub_font, 0, NULL, -1, &tmp_subset_glyph);
if (unlikely (status))
return status;
}
}
_cairo_scaled_font_freeze_cache (sub_font->scaled_font);
status = _cairo_scaled_glyph_lookup (sub_font->scaled_font,
scaled_font_glyph_index,
CAIRO_SCALED_GLYPH_INFO_METRICS,
&scaled_glyph);
assert (status != CAIRO_INT_STATUS_UNSUPPORTED);
if (unlikely (status)) {
_cairo_scaled_font_thaw_cache (sub_font->scaled_font);
return status;
}
sub_font_glyph = _cairo_sub_font_glyph_create (scaled_font_glyph_index,
sub_font->current_subset,
sub_font->num_glyphs_in_current_subset,
scaled_glyph->metrics.x_advance,
scaled_glyph->metrics.y_advance);
_cairo_scaled_font_thaw_cache (sub_font->scaled_font);
if (unlikely (sub_font_glyph == NULL))
return _cairo_error (CAIRO_STATUS_NO_MEMORY);
status = _cairo_sub_font_glyph_lookup_unicode (sub_font_glyph,
sub_font->scaled_font,
scaled_font_glyph_index);
if (unlikely (status)) {
_cairo_sub_font_glyph_destroy (sub_font_glyph);
return status;
}
status = _cairo_hash_table_insert (sub_font->sub_font_glyphs, &sub_font_glyph->base);
if (unlikely (status)) {
_cairo_sub_font_glyph_destroy (sub_font_glyph);
return status;
}
sub_font->num_glyphs_in_current_subset++;
if (sub_font->is_scaled) {
if (sub_font->num_glyphs_in_current_subset > sub_font->parent->max_glyphs_per_scaled_subset_used)
sub_font->parent->max_glyphs_per_scaled_subset_used = sub_font->num_glyphs_in_current_subset;
} else {
if (sub_font->num_glyphs_in_current_subset > sub_font->parent->max_glyphs_per_unscaled_subset_used)
sub_font->parent->max_glyphs_per_unscaled_subset_used = sub_font->num_glyphs_in_current_subset;
}
}
subset_glyph->font_id = sub_font->font_id;
subset_glyph->subset_id = sub_font_glyph->subset_id;
subset_glyph->subset_glyph_index = sub_font_glyph->subset_glyph_index;
subset_glyph->is_scaled = sub_font->is_scaled;
subset_glyph->is_composite = sub_font->is_composite;
subset_glyph->x_advance = sub_font_glyph->x_advance;
subset_glyph->y_advance = sub_font_glyph->y_advance;
status = _cairo_sub_font_glyph_map_to_unicode (sub_font_glyph,
utf8, utf8_len,
&subset_glyph->utf8_is_mapped);
subset_glyph->unicode = sub_font_glyph->unicode;
return status;
}
/**
* 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 (status == CAIRO_STATUS_INVALID_STRING)
return (cairo_font_face_t*) &_cairo_font_face_invalid_string;
else if (status)
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 (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))
{
if (! font_face->base.status) {
/* 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, &key.base.hash_entry);
font_face->base.hash_entry.hash = 0;
}
/* Otherwise create it and insert into hash table. */
//+EAWebKitChange
//11/10/2011
font_face = cairo_malloc (sizeof (cairo_toy_font_face_t));
//-EAWebKitChange
if (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 (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:
_cairo_toy_font_face_fini (font_face);
UNWIND_FONT_FACE_MALLOC:
//+EAWebKitChange
//11/10/2011
cairo_free (font_face);
//-EAWebKitChange
UNWIND_HASH_TABLE_LOCK:
_cairo_toy_font_face_hash_table_unlock ();
UNWIND:
return (cairo_font_face_t*) &_cairo_font_face_nil;
}
cairo_int_status_t
_cairo_scaled_font_subset_create_glyph_names (cairo_scaled_font_subset_t *subset)
{
const cairo_scaled_font_backend_t *backend;
unsigned int i;
cairo_status_t status;
cairo_hash_table_t *names;
cairo_string_entry_t key, *entry;
char buf[30];
if (subset->to_unicode == NULL)
return CAIRO_INT_STATUS_UNSUPPORTED;
status = _cairo_truetype_create_glyph_to_unicode_map (subset);
if (status) {
if (status != CAIRO_INT_STATUS_UNSUPPORTED)
return status;
backend = subset->scaled_font->backend;
if (backend->map_glyphs_to_unicode == NULL)
return CAIRO_INT_STATUS_UNSUPPORTED;
status = backend->map_glyphs_to_unicode (subset->scaled_font, subset);
if (status)
return status;
}
names = _cairo_hash_table_create (_cairo_string_equal);
if (names == NULL)
return _cairo_error (CAIRO_STATUS_NO_MEMORY);
subset->glyph_names = calloc (subset->num_glyphs, sizeof (char *));
if (subset->glyph_names == NULL) {
status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
goto CLEANUP_HASH;
}
subset->glyph_names[0] = strdup (".notdef");
if (subset->glyph_names[0] == NULL) {
status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
goto CLEANUP_HASH;
}
status = create_string_entry (subset->glyph_names[0], &entry);
if (status)
goto CLEANUP_HASH;
status = _cairo_hash_table_insert (names, &entry->base);
if (status) {
free (entry);
goto CLEANUP_HASH;
}
for (i = 1; i < subset->num_glyphs; i++) {
if (subset->to_unicode[i] <= 0xffff) {
snprintf (buf, sizeof(buf), "uni%04X", (unsigned int)(subset->to_unicode[i]));
_cairo_string_init_key (&key, buf);
if (_cairo_hash_table_lookup (names, &key.base,
(cairo_hash_entry_t **) &entry)) {
snprintf (buf, sizeof(buf), "g%d", i);
}
} else {
snprintf (buf, sizeof(buf), "g%d", i);
}
subset->glyph_names[i] = strdup (buf);
if (subset->glyph_names[i] == NULL) {
status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
goto CLEANUP_HASH;
}
status = create_string_entry (subset->glyph_names[i], &entry);
if (status)
goto CLEANUP_HASH;
status = _cairo_hash_table_insert (names, &entry->base);
if (status) {
free (entry);
goto CLEANUP_HASH;
}
}
CLEANUP_HASH:
while (1) {
entry = _cairo_hash_table_random_entry (names, NULL);
if (entry == NULL)
break;
_cairo_hash_table_remove (names, (cairo_hash_entry_t *) entry);
free (entry);
}
_cairo_hash_table_destroy (names);
if (status == CAIRO_STATUS_SUCCESS)
return CAIRO_STATUS_SUCCESS;
if (subset->glyph_names != NULL) {
for (i = 0; i < subset->num_glyphs; i++) {
if (subset->glyph_names[i] != NULL)
free (subset->glyph_names[i]);
}
free (subset->glyph_names);
subset->glyph_names = NULL;
}
return status;
}
/**
* 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 and other details 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) {
cairo_font_face_reference (&font_face->base);
_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);
}
/* Otherwise create it and insert into hash table. */
font_face = _cairo_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;
assert (font_face->base.hash_entry.hash == key.base.hash_entry.hash);
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;
}
