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authorDenis Bitouzé <dbitouze@wanadoo.fr>2021-02-25 18:23:07 +0000
committerDenis Bitouzé <dbitouze@wanadoo.fr>2021-02-25 18:23:07 +0000
commitc6101f91d071883b48b1b4b51e5eba0f36d9a78d (patch)
tree1bf7f5a881d7a4f5c5bf59d0b2821943dd822372 /Build/source/libs/cairo/cairo-src/src/cairo-ft-font.c
parent07ee7222e389b0777456b427a55c22d0e6ffd267 (diff)
French translation for tlmgr updated
git-svn-id: svn://tug.org/texlive/trunk@57912 c570f23f-e606-0410-a88d-b1316a301751
Diffstat (limited to 'Build/source/libs/cairo/cairo-src/src/cairo-ft-font.c')
-rw-r--r--Build/source/libs/cairo/cairo-src/src/cairo-ft-font.c3935
1 files changed, 0 insertions, 3935 deletions
diff --git a/Build/source/libs/cairo/cairo-src/src/cairo-ft-font.c b/Build/source/libs/cairo/cairo-src/src/cairo-ft-font.c
deleted file mode 100644
index 325dd61b47b..00000000000
--- a/Build/source/libs/cairo/cairo-src/src/cairo-ft-font.c
+++ /dev/null
@@ -1,3935 +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 © 2000 Keith Packard
- * 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 Red Hat, Inc.
- *
- * Contributor(s):
- * Graydon Hoare <graydon@redhat.com>
- * Owen Taylor <otaylor@redhat.com>
- * Keith Packard <keithp@keithp.com>
- * Carl Worth <cworth@cworth.org>
- */
-
-#define _DEFAULT_SOURCE /* for strdup() */
-#include "cairoint.h"
-
-#include "cairo-error-private.h"
-#include "cairo-image-surface-private.h"
-#include "cairo-ft-private.h"
-#include "cairo-pattern-private.h"
-#include "cairo-pixman-private.h"
-
-#include <float.h>
-
-#include "cairo-fontconfig-private.h"
-
-#include <ft2build.h>
-#include FT_FREETYPE_H
-#include FT_OUTLINE_H
-#include FT_IMAGE_H
-#include FT_BITMAP_H
-#include FT_TRUETYPE_TABLES_H
-#include FT_XFREE86_H
-#include FT_MULTIPLE_MASTERS_H
-#if HAVE_FT_GLYPHSLOT_EMBOLDEN
-#include FT_SYNTHESIS_H
-#endif
-
-#if HAVE_FT_LIBRARY_SETLCDFILTER
-#include FT_LCD_FILTER_H
-#endif
-
-#if HAVE_UNISTD_H
-#include <unistd.h>
-#else
-#define access(p, m) 0
-#endif
-
-/* Fontconfig version older than 2.6 didn't have these options */
-#ifndef FC_LCD_FILTER
-#define FC_LCD_FILTER "lcdfilter"
-#endif
-/* Some Ubuntu versions defined FC_LCD_FILTER without defining the following */
-#ifndef FC_LCD_NONE
-#define FC_LCD_NONE 0
-#define FC_LCD_DEFAULT 1
-#define FC_LCD_LIGHT 2
-#define FC_LCD_LEGACY 3
-#endif
-
-/* FreeType version older than 2.3.5(?) didn't have these options */
-#ifndef FT_LCD_FILTER_NONE
-#define FT_LCD_FILTER_NONE 0
-#define FT_LCD_FILTER_DEFAULT 1
-#define FT_LCD_FILTER_LIGHT 2
-#define FT_LCD_FILTER_LEGACY 16
-#endif
-
-#define DOUBLE_FROM_26_6(t) ((double)(t) / 64.0)
-#define DOUBLE_TO_16_16(d) ((FT_Fixed)((d) * 65536.0))
-#define DOUBLE_FROM_16_16(t) ((double)(t) / 65536.0)
-
-/* This is the max number of FT_face objects we keep open at once
- */
-#define MAX_OPEN_FACES 10
-
-/**
- * SECTION:cairo-ft
- * @Title: FreeType Fonts
- * @Short_Description: Font support for FreeType
- * @See_Also: #cairo_font_face_t
- *
- * The FreeType font backend is primarily used to render text on GNU/Linux
- * systems, but can be used on other platforms too.
- **/
-
-/**
- * CAIRO_HAS_FT_FONT:
- *
- * Defined if the FreeType font backend is available.
- * This macro can be used to conditionally compile backend-specific code.
- *
- * Since: 1.0
- **/
-
-/**
- * CAIRO_HAS_FC_FONT:
- *
- * Defined if the Fontconfig-specific functions of the FreeType font backend
- * are available.
- * This macro can be used to conditionally compile backend-specific code.
- *
- * Since: 1.10
- **/
-
-/*
- * The simple 2x2 matrix is converted into separate scale and shape
- * factors so that hinting works right
- */
-
-typedef struct _cairo_ft_font_transform {
- double x_scale, y_scale;
- double shape[2][2];
-} cairo_ft_font_transform_t;
-
-/*
- * We create an object that corresponds to a single font on the disk;
- * (identified by a filename/id pair) these are shared between all
- * fonts using that file. For cairo_ft_font_face_create_for_ft_face(), we
- * just create a one-off version with a permanent face value.
- */
-
-typedef struct _cairo_ft_font_face cairo_ft_font_face_t;
-
-struct _cairo_ft_unscaled_font {
- cairo_unscaled_font_t base;
-
- cairo_bool_t from_face; /* was the FT_Face provided by user? */
- FT_Face face; /* provided or cached face */
-
- /* only set if from_face is false */
- char *filename;
- int id;
-
- /* We temporarily scale the unscaled font as needed */
- cairo_bool_t have_scale;
- cairo_matrix_t current_scale;
- double x_scale; /* Extracted X scale factor */
- double y_scale; /* Extracted Y scale factor */
- cairo_bool_t have_shape; /* true if the current scale has a non-scale component*/
- cairo_matrix_t current_shape;
- FT_Matrix Current_Shape;
-
- unsigned int have_color_set : 1;
- unsigned int have_color : 1; /* true if the font contains color glyphs */
- FT_Fixed *variations; /* variation settings that FT_Face came */
-
- cairo_mutex_t mutex;
- int lock_count;
-
- cairo_ft_font_face_t *faces; /* Linked list of faces for this font */
-};
-
-static int
-_cairo_ft_unscaled_font_keys_equal (const void *key_a,
- const void *key_b);
-
-static void
-_cairo_ft_unscaled_font_fini (cairo_ft_unscaled_font_t *unscaled);
-
-typedef struct _cairo_ft_options {
- cairo_font_options_t base;
- unsigned int load_flags; /* flags for FT_Load_Glyph */
- unsigned int synth_flags;
-} cairo_ft_options_t;
-
-static void
-_cairo_ft_options_init_copy (cairo_ft_options_t *options,
- const cairo_ft_options_t *other)
-{
- _cairo_font_options_init_copy (&options->base, &other->base);
- options->load_flags = other->load_flags;
- options->synth_flags = other->synth_flags;
-}
-
-static void
-_cairo_ft_options_fini (cairo_ft_options_t *options)
-{
- _cairo_font_options_fini (&options->base);
-}
-
-struct _cairo_ft_font_face {
- cairo_font_face_t base;
-
- cairo_ft_unscaled_font_t *unscaled;
- cairo_ft_options_t ft_options;
- cairo_ft_font_face_t *next;
-
-#if CAIRO_HAS_FC_FONT
- FcPattern *pattern; /* if pattern is set, the above fields will be NULL */
- cairo_font_face_t *resolved_font_face;
- FcConfig *resolved_config;
-#endif
-};
-
-static const cairo_unscaled_font_backend_t cairo_ft_unscaled_font_backend;
-
-#if CAIRO_HAS_FC_FONT
-static cairo_status_t
-_cairo_ft_font_options_substitute (const cairo_font_options_t *options,
- FcPattern *pattern);
-
-static cairo_font_face_t *
-_cairo_ft_resolve_pattern (FcPattern *pattern,
- const cairo_matrix_t *font_matrix,
- const cairo_matrix_t *ctm,
- const cairo_font_options_t *options);
-
-#endif
-
-static cairo_status_t
-_ft_to_cairo_error (FT_Error error)
-{
- /* Currently we don't get many (any?) useful statuses here.
- * Populate as needed. */
- switch (error)
- {
- case FT_Err_Out_Of_Memory:
- return CAIRO_STATUS_NO_MEMORY;
- default:
- return CAIRO_STATUS_FREETYPE_ERROR;
- }
-}
-
-/*
- * We maintain a hash table to map file/id => #cairo_ft_unscaled_font_t.
- * The hash table itself isn't limited in size. However, we limit the
- * number of FT_Face objects we keep around; when we've exceeded that
- * limit and need to create a new FT_Face, we dump the FT_Face from a
- * random #cairo_ft_unscaled_font_t which has an unlocked FT_Face, (if
- * there are any).
- */
-
-typedef struct _cairo_ft_unscaled_font_map {
- cairo_hash_table_t *hash_table;
- FT_Library ft_library;
- int num_open_faces;
-} cairo_ft_unscaled_font_map_t;
-
-static cairo_ft_unscaled_font_map_t *cairo_ft_unscaled_font_map = NULL;
-
-
-static FT_Face
-_cairo_ft_unscaled_font_lock_face (cairo_ft_unscaled_font_t *unscaled);
-
-static void
-_cairo_ft_unscaled_font_unlock_face (cairo_ft_unscaled_font_t *unscaled);
-
-static cairo_bool_t
-_cairo_ft_scaled_font_is_vertical (cairo_scaled_font_t *scaled_font);
-
-
-static void
-_font_map_release_face_lock_held (cairo_ft_unscaled_font_map_t *font_map,
- cairo_ft_unscaled_font_t *unscaled)
-{
- if (unscaled->face) {
- FT_Done_Face (unscaled->face);
- unscaled->face = NULL;
- unscaled->have_scale = FALSE;
-
- font_map->num_open_faces--;
- }
-}
-
-static cairo_status_t
-_cairo_ft_unscaled_font_map_create (void)
-{
- cairo_ft_unscaled_font_map_t *font_map;
-
- /* This function is only intended to be called from
- * _cairo_ft_unscaled_font_map_lock. So we'll crash if we can
- * detect some other call path. */
- assert (cairo_ft_unscaled_font_map == NULL);
-
- font_map = _cairo_malloc (sizeof (cairo_ft_unscaled_font_map_t));
- if (unlikely (font_map == NULL))
- return _cairo_error (CAIRO_STATUS_NO_MEMORY);
-
- font_map->hash_table =
- _cairo_hash_table_create (_cairo_ft_unscaled_font_keys_equal);
-
- if (unlikely (font_map->hash_table == NULL))
- goto FAIL;
-
- if (unlikely (FT_Init_FreeType (&font_map->ft_library)))
- goto FAIL;
-
- font_map->num_open_faces = 0;
-
- cairo_ft_unscaled_font_map = font_map;
- return CAIRO_STATUS_SUCCESS;
-
-FAIL:
- if (font_map->hash_table)
- _cairo_hash_table_destroy (font_map->hash_table);
- free (font_map);
-
- return _cairo_error (CAIRO_STATUS_NO_MEMORY);
-}
-
-
-static void
-_cairo_ft_unscaled_font_map_pluck_entry (void *entry, void *closure)
-{
- cairo_ft_unscaled_font_t *unscaled = entry;
- cairo_ft_unscaled_font_map_t *font_map = closure;
-
- _cairo_hash_table_remove (font_map->hash_table,
- &unscaled->base.hash_entry);
-
- if (! unscaled->from_face)
- _font_map_release_face_lock_held (font_map, unscaled);
-
- _cairo_ft_unscaled_font_fini (unscaled);
- free (unscaled);
-}
-
-static void
-_cairo_ft_unscaled_font_map_destroy (void)
-{
- cairo_ft_unscaled_font_map_t *font_map;
-
- CAIRO_MUTEX_LOCK (_cairo_ft_unscaled_font_map_mutex);
- font_map = cairo_ft_unscaled_font_map;
- cairo_ft_unscaled_font_map = NULL;
- CAIRO_MUTEX_UNLOCK (_cairo_ft_unscaled_font_map_mutex);
-
- if (font_map != NULL) {
- _cairo_hash_table_foreach (font_map->hash_table,
- _cairo_ft_unscaled_font_map_pluck_entry,
- font_map);
- assert (font_map->num_open_faces == 0);
-
- FT_Done_FreeType (font_map->ft_library);
-
- _cairo_hash_table_destroy (font_map->hash_table);
-
- free (font_map);
- }
-}
-
-static cairo_ft_unscaled_font_map_t *
-_cairo_ft_unscaled_font_map_lock (void)
-{
- CAIRO_MUTEX_LOCK (_cairo_ft_unscaled_font_map_mutex);
-
- if (unlikely (cairo_ft_unscaled_font_map == NULL)) {
- if (unlikely (_cairo_ft_unscaled_font_map_create ())) {
- CAIRO_MUTEX_UNLOCK (_cairo_ft_unscaled_font_map_mutex);
- return NULL;
- }
- }
-
- return cairo_ft_unscaled_font_map;
-}
-
-static void
-_cairo_ft_unscaled_font_map_unlock (void)
-{
- CAIRO_MUTEX_UNLOCK (_cairo_ft_unscaled_font_map_mutex);
-}
-
-static void
-_cairo_ft_unscaled_font_init_key (cairo_ft_unscaled_font_t *key,
- cairo_bool_t from_face,
- char *filename,
- int id,
- FT_Face face)
-{
- unsigned long hash;
-
- key->from_face = from_face;
- key->filename = filename;
- key->id = id;
- key->face = face;
-
- hash = _cairo_hash_string (filename);
- /* the constants are just arbitrary primes */
- hash += ((unsigned long) id) * 1607;
- hash += ((unsigned long) face) * 2137;
-
- key->base.hash_entry.hash = hash;
-}
-
-/**
- * _cairo_ft_unscaled_font_init:
- *
- * Initialize a #cairo_ft_unscaled_font_t.
- *
- * There are two basic flavors of #cairo_ft_unscaled_font_t, one
- * created from an FT_Face and the other created from a filename/id
- * pair. These two flavors are identified as from_face and !from_face.
- *
- * To initialize a from_face font, pass filename==%NULL, id=0 and the
- * desired face.
- *
- * To initialize a !from_face font, pass the filename/id as desired
- * and face==%NULL.
- *
- * Note that the code handles these two flavors in very distinct
- * ways. For example there is a hash_table mapping
- * filename/id->#cairo_unscaled_font_t in the !from_face case, but no
- * parallel in the from_face case, (where the calling code would have
- * to do its own mapping to ensure similar sharing).
- **/
-static cairo_status_t
-_cairo_ft_unscaled_font_init (cairo_ft_unscaled_font_t *unscaled,
- cairo_bool_t from_face,
- const char *filename,
- int id,
- FT_Face face)
-{
- _cairo_unscaled_font_init (&unscaled->base,
- &cairo_ft_unscaled_font_backend);
-
- unscaled->variations = NULL;
-
- if (from_face) {
- unscaled->from_face = TRUE;
- _cairo_ft_unscaled_font_init_key (unscaled, TRUE, NULL, id, face);
-
-
- unscaled->have_color = FT_HAS_COLOR (face) != 0;
- unscaled->have_color_set = TRUE;
-
-#ifdef HAVE_FT_GET_VAR_DESIGN_COORDINATES
- {
- FT_MM_Var *ft_mm_var;
- if (0 == FT_Get_MM_Var (face, &ft_mm_var))
- {
- unscaled->variations = calloc (ft_mm_var->num_axis, sizeof (FT_Fixed));
- if (unscaled->variations)
- FT_Get_Var_Design_Coordinates (face, ft_mm_var->num_axis, unscaled->variations);
- }
- }
-#endif
- } else {
- char *filename_copy;
-
- unscaled->from_face = FALSE;
- unscaled->face = NULL;
-
- filename_copy = strdup (filename);
- if (unlikely (filename_copy == NULL))
- return _cairo_error (CAIRO_STATUS_NO_MEMORY);
-
- _cairo_ft_unscaled_font_init_key (unscaled, FALSE, filename_copy, id, NULL);
-
- unscaled->have_color_set = FALSE;
- }
-
- unscaled->have_scale = FALSE;
- CAIRO_MUTEX_INIT (unscaled->mutex);
- unscaled->lock_count = 0;
-
- unscaled->faces = NULL;
-
- return CAIRO_STATUS_SUCCESS;
-}
-
-/**
- * _cairo_ft_unscaled_font_fini:
- *
- * Free all data associated with a #cairo_ft_unscaled_font_t.
- *
- * CAUTION: The unscaled->face field must be %NULL before calling this
- * function. This is because the #cairo_ft_unscaled_font_t_map keeps a
- * count of these faces (font_map->num_open_faces) so it maintains the
- * unscaled->face field while it has its lock held. See
- * _font_map_release_face_lock_held().
- **/
-static void
-_cairo_ft_unscaled_font_fini (cairo_ft_unscaled_font_t *unscaled)
-{
- assert (unscaled->face == NULL);
-
- free (unscaled->filename);
- unscaled->filename = NULL;
-
- free (unscaled->variations);
-
- CAIRO_MUTEX_FINI (unscaled->mutex);
-}
-
-static int
-_cairo_ft_unscaled_font_keys_equal (const void *key_a,
- const void *key_b)
-{
- const cairo_ft_unscaled_font_t *unscaled_a = key_a;
- const cairo_ft_unscaled_font_t *unscaled_b = key_b;
-
- if (unscaled_a->id == unscaled_b->id &&
- unscaled_a->from_face == unscaled_b->from_face)
- {
- if (unscaled_a->from_face)
- return unscaled_a->face == unscaled_b->face;
-
- if (unscaled_a->filename == NULL && unscaled_b->filename == NULL)
- return TRUE;
- else if (unscaled_a->filename == NULL || unscaled_b->filename == NULL)
- return FALSE;
- else
- return (strcmp (unscaled_a->filename, unscaled_b->filename) == 0);
- }
-
- return FALSE;
-}
-
-/* Finds or creates a #cairo_ft_unscaled_font_t for the filename/id from
- * pattern. Returns a new reference to the unscaled font.
- */
-static cairo_status_t
-_cairo_ft_unscaled_font_create_internal (cairo_bool_t from_face,
- char *filename,
- int id,
- FT_Face font_face,
- cairo_ft_unscaled_font_t **out)
-{
- cairo_ft_unscaled_font_t key, *unscaled;
- cairo_ft_unscaled_font_map_t *font_map;
- cairo_status_t status;
-
- font_map = _cairo_ft_unscaled_font_map_lock ();
- if (unlikely (font_map == NULL))
- return _cairo_error (CAIRO_STATUS_NO_MEMORY);
-
- _cairo_ft_unscaled_font_init_key (&key, from_face, filename, id, font_face);
-
- /* Return existing unscaled font if it exists in the hash table. */
- unscaled = _cairo_hash_table_lookup (font_map->hash_table,
- &key.base.hash_entry);
- if (unscaled != NULL) {
- _cairo_unscaled_font_reference (&unscaled->base);
- goto DONE;
- }
-
- /* Otherwise create it and insert into hash table. */
- unscaled = _cairo_malloc (sizeof (cairo_ft_unscaled_font_t));
- if (unlikely (unscaled == NULL)) {
- status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
- goto UNWIND_FONT_MAP_LOCK;
- }
-
- status = _cairo_ft_unscaled_font_init (unscaled, from_face, filename, id, font_face);
- if (unlikely (status))
- goto UNWIND_UNSCALED_MALLOC;
-
- assert (unscaled->base.hash_entry.hash == key.base.hash_entry.hash);
- status = _cairo_hash_table_insert (font_map->hash_table,
- &unscaled->base.hash_entry);
- if (unlikely (status))
- goto UNWIND_UNSCALED_FONT_INIT;
-
-DONE:
- _cairo_ft_unscaled_font_map_unlock ();
- *out = unscaled;
- return CAIRO_STATUS_SUCCESS;
-
-UNWIND_UNSCALED_FONT_INIT:
- _cairo_ft_unscaled_font_fini (unscaled);
-UNWIND_UNSCALED_MALLOC:
- free (unscaled);
-UNWIND_FONT_MAP_LOCK:
- _cairo_ft_unscaled_font_map_unlock ();
- return status;
-}
-
-
-#if CAIRO_HAS_FC_FONT
-static cairo_status_t
-_cairo_ft_unscaled_font_create_for_pattern (FcPattern *pattern,
- cairo_ft_unscaled_font_t **out)
-{
- FT_Face font_face = NULL;
- char *filename = NULL;
- int id = 0;
- FcResult ret;
-
- ret = FcPatternGetFTFace (pattern, FC_FT_FACE, 0, &font_face);
- if (ret == FcResultMatch)
- goto DONE;
- if (ret == FcResultOutOfMemory)
- return _cairo_error (CAIRO_STATUS_NO_MEMORY);
-
- ret = FcPatternGetString (pattern, FC_FILE, 0, (FcChar8 **) &filename);
- if (ret == FcResultOutOfMemory)
- return _cairo_error (CAIRO_STATUS_NO_MEMORY);
- if (ret == FcResultMatch) {
- if (access (filename, R_OK) == 0) {
- /* If FC_INDEX is not set, we just use 0 */
- ret = FcPatternGetInteger (pattern, FC_INDEX, 0, &id);
- if (ret == FcResultOutOfMemory)
- return _cairo_error (CAIRO_STATUS_NO_MEMORY);
-
- goto DONE;
- } else
- return _cairo_error (CAIRO_STATUS_FILE_NOT_FOUND);
- }
-
- /* The pattern contains neither a face nor a filename, resolve it later. */
- *out = NULL;
- return CAIRO_STATUS_SUCCESS;
-
-DONE:
- return _cairo_ft_unscaled_font_create_internal (font_face != NULL,
- filename, id, font_face,
- out);
-}
-#endif
-
-static cairo_status_t
-_cairo_ft_unscaled_font_create_from_face (FT_Face face,
- cairo_ft_unscaled_font_t **out)
-{
- return _cairo_ft_unscaled_font_create_internal (TRUE, NULL, face->face_index, face, out);
-}
-
-static cairo_bool_t
-_cairo_ft_unscaled_font_destroy (void *abstract_font)
-{
- cairo_ft_unscaled_font_t *unscaled = abstract_font;
- cairo_ft_unscaled_font_map_t *font_map;
-
- font_map = _cairo_ft_unscaled_font_map_lock ();
- /* All created objects must have been mapped in the font map. */
- assert (font_map != NULL);
-
- if (! _cairo_reference_count_dec_and_test (&unscaled->base.ref_count)) {
- /* somebody recreated the font whilst we waited for the lock */
- _cairo_ft_unscaled_font_map_unlock ();
- return FALSE;
- }
-
- _cairo_hash_table_remove (font_map->hash_table,
- &unscaled->base.hash_entry);
-
- if (unscaled->from_face) {
- /* See comments in _ft_font_face_destroy about the "zombie" state
- * for a _ft_font_face.
- */
- if (unscaled->faces && unscaled->faces->unscaled == NULL) {
- assert (unscaled->faces->next == NULL);
- cairo_font_face_destroy (&unscaled->faces->base);
- }
- } else {
- _font_map_release_face_lock_held (font_map, unscaled);
- }
- unscaled->face = NULL;
-
- _cairo_ft_unscaled_font_map_unlock ();
-
- _cairo_ft_unscaled_font_fini (unscaled);
- return TRUE;
-}
-
-static cairo_bool_t
-_has_unlocked_face (const void *entry)
-{
- const cairo_ft_unscaled_font_t *unscaled = entry;
-
- return (!unscaled->from_face && unscaled->lock_count == 0 && unscaled->face);
-}
-
-/* Ensures that an unscaled font has a face object. If we exceed
- * MAX_OPEN_FACES, try to close some.
- *
- * This differs from _cairo_ft_scaled_font_lock_face in that it doesn't
- * set the scale on the face, but just returns it at the last scale.
- */
-static cairo_warn FT_Face
-_cairo_ft_unscaled_font_lock_face (cairo_ft_unscaled_font_t *unscaled)
-{
- cairo_ft_unscaled_font_map_t *font_map;
- FT_Face face = NULL;
- FT_Error error;
-
- CAIRO_MUTEX_LOCK (unscaled->mutex);
- unscaled->lock_count++;
-
- if (unscaled->face)
- return unscaled->face;
-
- /* If this unscaled font was created from an FT_Face then we just
- * returned it above. */
- assert (!unscaled->from_face);
-
- font_map = _cairo_ft_unscaled_font_map_lock ();
- {
- assert (font_map != NULL);
-
- while (font_map->num_open_faces >= MAX_OPEN_FACES)
- {
- cairo_ft_unscaled_font_t *entry;
-
- entry = _cairo_hash_table_random_entry (font_map->hash_table,
- _has_unlocked_face);
- if (entry == NULL)
- break;
-
- _font_map_release_face_lock_held (font_map, entry);
- }
- }
- _cairo_ft_unscaled_font_map_unlock ();
-
- error = FT_New_Face (font_map->ft_library,
- unscaled->filename,
- unscaled->id,
- &face);
- if (error)
- {
- unscaled->lock_count--;
- CAIRO_MUTEX_UNLOCK (unscaled->mutex);
- _cairo_error_throw (_ft_to_cairo_error (error));
- return NULL;
- }
-
- unscaled->face = face;
-
- unscaled->have_color = FT_HAS_COLOR (face) != 0;
- unscaled->have_color_set = TRUE;
-
- font_map->num_open_faces++;
-
- return face;
-}
-
-
-/* Unlock unscaled font locked with _cairo_ft_unscaled_font_lock_face
- */
-static void
-_cairo_ft_unscaled_font_unlock_face (cairo_ft_unscaled_font_t *unscaled)
-{
- assert (unscaled->lock_count > 0);
-
- unscaled->lock_count--;
-
- CAIRO_MUTEX_UNLOCK (unscaled->mutex);
-}
-
-
-static cairo_status_t
-_compute_transform (cairo_ft_font_transform_t *sf,
- cairo_matrix_t *scale,
- cairo_ft_unscaled_font_t *unscaled)
-{
- cairo_status_t status;
- double x_scale, y_scale;
- cairo_matrix_t normalized = *scale;
-
- /* The font matrix has x and y "scale" components which we extract and
- * use as character scale values. These influence the way freetype
- * chooses hints, as well as selecting different bitmaps in
- * hand-rendered fonts. We also copy the normalized matrix to
- * freetype's transformation.
- */
-
- status = _cairo_matrix_compute_basis_scale_factors (scale,
- &x_scale, &y_scale,
- 1);
- if (unlikely (status))
- return status;
-
- /* FreeType docs say this about x_scale and y_scale:
- * "A character width or height smaller than 1pt is set to 1pt;"
- * So, we cap them from below at 1.0 and let the FT transform
- * take care of sub-1.0 scaling. */
- if (x_scale < 1.0)
- x_scale = 1.0;
- if (y_scale < 1.0)
- y_scale = 1.0;
-
- if (unscaled && (unscaled->face->face_flags & FT_FACE_FLAG_SCALABLE) == 0) {
- double min_distance = DBL_MAX;
- cairo_bool_t magnify = TRUE;
- int i;
- double best_x_size = 0;
- double best_y_size = 0;
-
- for (i = 0; i < unscaled->face->num_fixed_sizes; i++) {
- double x_size = unscaled->face->available_sizes[i].x_ppem / 64.;
- double y_size = unscaled->face->available_sizes[i].y_ppem / 64.;
- double distance = y_size - y_scale;
-
- /*
- * distance is positive if current strike is larger than desired
- * size, and negative if smaller.
- *
- * We like to prefer down-scaling to upscaling.
- */
-
- if ((magnify && distance >= 0) || fabs (distance) <= min_distance) {
- magnify = distance < 0;
- min_distance = fabs (distance);
- best_x_size = x_size;
- best_y_size = y_size;
- }
- }
-
- x_scale = best_x_size;
- y_scale = best_y_size;
- }
-
- sf->x_scale = x_scale;
- sf->y_scale = y_scale;
-
- cairo_matrix_scale (&normalized, 1.0 / x_scale, 1.0 / y_scale);
-
- _cairo_matrix_get_affine (&normalized,
- &sf->shape[0][0], &sf->shape[0][1],
- &sf->shape[1][0], &sf->shape[1][1],
- NULL, NULL);
-
- return CAIRO_STATUS_SUCCESS;
-}
-
-/* Temporarily scales an unscaled font to the give scale. We catch
- * scaling to the same size, since changing a FT_Face is expensive.
- */
-static cairo_status_t
-_cairo_ft_unscaled_font_set_scale (cairo_ft_unscaled_font_t *unscaled,
- cairo_matrix_t *scale)
-{
- cairo_status_t status;
- cairo_ft_font_transform_t sf;
- FT_Matrix mat;
- FT_Error error;
-
- assert (unscaled->face != NULL);
-
- if (unscaled->have_scale &&
- scale->xx == unscaled->current_scale.xx &&
- scale->yx == unscaled->current_scale.yx &&
- scale->xy == unscaled->current_scale.xy &&
- scale->yy == unscaled->current_scale.yy)
- return CAIRO_STATUS_SUCCESS;
-
- unscaled->have_scale = TRUE;
- unscaled->current_scale = *scale;
-
- status = _compute_transform (&sf, scale, unscaled);
- if (unlikely (status))
- return status;
-
- unscaled->x_scale = sf.x_scale;
- unscaled->y_scale = sf.y_scale;
-
- mat.xx = DOUBLE_TO_16_16(sf.shape[0][0]);
- mat.yx = - DOUBLE_TO_16_16(sf.shape[0][1]);
- mat.xy = - DOUBLE_TO_16_16(sf.shape[1][0]);
- mat.yy = DOUBLE_TO_16_16(sf.shape[1][1]);
-
- unscaled->have_shape = (mat.xx != 0x10000 ||
- mat.yx != 0x00000 ||
- mat.xy != 0x00000 ||
- mat.yy != 0x10000);
-
- unscaled->Current_Shape = mat;
- cairo_matrix_init (&unscaled->current_shape,
- sf.shape[0][0], sf.shape[0][1],
- sf.shape[1][0], sf.shape[1][1],
- 0.0, 0.0);
-
- FT_Set_Transform(unscaled->face, &mat, NULL);
-
- error = FT_Set_Char_Size (unscaled->face,
- sf.x_scale * 64.0 + .5,
- sf.y_scale * 64.0 + .5,
- 0, 0);
- if (error)
- return _cairo_error (_ft_to_cairo_error (error));
-
- return CAIRO_STATUS_SUCCESS;
-}
-
-/* we sometimes need to convert the glyph bitmap in a FT_GlyphSlot
- * into a different format. For example, we want to convert a
- * FT_PIXEL_MODE_LCD or FT_PIXEL_MODE_LCD_V bitmap into a 32-bit
- * ARGB or ABGR bitmap.
- *
- * this function prepares a target descriptor for this operation.
- *
- * input :: target bitmap descriptor. The function will set its
- * 'width', 'rows' and 'pitch' fields, and only these
- *
- * slot :: the glyph slot containing the source bitmap. this
- * function assumes that slot->format == FT_GLYPH_FORMAT_BITMAP
- *
- * mode :: the requested final rendering mode. supported values are
- * MONO, NORMAL (i.e. gray), LCD and LCD_V
- *
- * the function returns the size in bytes of the corresponding buffer,
- * it's up to the caller to allocate the corresponding memory block
- * before calling _fill_xrender_bitmap
- *
- * it also returns -1 in case of error (e.g. incompatible arguments,
- * like trying to convert a gray bitmap into a monochrome one)
- */
-static int
-_compute_xrender_bitmap_size(FT_Bitmap *target,
- FT_GlyphSlot slot,
- FT_Render_Mode mode)
-{
- FT_Bitmap *ftbit;
- int width, height, pitch;
-
- if (slot->format != FT_GLYPH_FORMAT_BITMAP)
- return -1;
-
- /* compute the size of the final bitmap */
- ftbit = &slot->bitmap;
-
- width = ftbit->width;
- height = ftbit->rows;
- pitch = (width + 3) & ~3;
-
- switch (ftbit->pixel_mode) {
- case FT_PIXEL_MODE_MONO:
- if (mode == FT_RENDER_MODE_MONO) {
- pitch = (((width + 31) & ~31) >> 3);
- break;
- }
- /* fall-through */
-
- case FT_PIXEL_MODE_GRAY:
- if (mode == FT_RENDER_MODE_LCD ||
- mode == FT_RENDER_MODE_LCD_V)
- {
- /* each pixel is replicated into a 32-bit ARGB value */
- pitch = width * 4;
- }
- break;
-
- case FT_PIXEL_MODE_LCD:
- if (mode != FT_RENDER_MODE_LCD)
- return -1;
-
- /* horz pixel triplets are packed into 32-bit ARGB values */
- width /= 3;
- pitch = width * 4;
- break;
-
- case FT_PIXEL_MODE_LCD_V:
- if (mode != FT_RENDER_MODE_LCD_V)
- return -1;
-
- /* vert pixel triplets are packed into 32-bit ARGB values */
- height /= 3;
- pitch = width * 4;
- break;
-
- case FT_PIXEL_MODE_BGRA:
- /* each pixel is replicated into a 32-bit ARGB value */
- pitch = width * 4;
- break;
-
- default: /* unsupported source format */
- return -1;
- }
-
- target->width = width;
- target->rows = height;
- target->pitch = pitch;
- target->buffer = NULL;
-
- return pitch * height;
-}
-
-/* this functions converts the glyph bitmap found in a FT_GlyphSlot
- * into a different format (see _compute_xrender_bitmap_size)
- *
- * you should call this function after _compute_xrender_bitmap_size
- *
- * target :: target bitmap descriptor. Note that its 'buffer' pointer
- * must point to memory allocated by the caller
- *
- * slot :: the glyph slot containing the source bitmap
- *
- * mode :: the requested final rendering mode
- *
- * bgr :: boolean, set if BGR or VBGR pixel ordering is needed
- */
-static void
-_fill_xrender_bitmap(FT_Bitmap *target,
- FT_GlyphSlot slot,
- FT_Render_Mode mode,
- int bgr)
-{
- FT_Bitmap *ftbit = &slot->bitmap;
- unsigned char *srcLine = ftbit->buffer;
- unsigned char *dstLine = target->buffer;
- int src_pitch = ftbit->pitch;
- int width = target->width;
- int height = target->rows;
- int pitch = target->pitch;
- int subpixel;
- int h;
-
- subpixel = (mode == FT_RENDER_MODE_LCD ||
- mode == FT_RENDER_MODE_LCD_V);
-
- if (src_pitch < 0)
- srcLine -= src_pitch * (ftbit->rows - 1);
-
- target->pixel_mode = ftbit->pixel_mode;
-
- switch (ftbit->pixel_mode) {
- case FT_PIXEL_MODE_MONO:
- if (subpixel) {
- /* convert mono to ARGB32 values */
-
- for (h = height; h > 0; h--, srcLine += src_pitch, dstLine += pitch) {
- int x;
-
- for (x = 0; x < width; x++) {
- if (srcLine[(x >> 3)] & (0x80 >> (x & 7)))
- ((unsigned int *) dstLine)[x] = 0xffffffffU;
- }
- }
- target->pixel_mode = FT_PIXEL_MODE_LCD;
-
- } else if (mode == FT_RENDER_MODE_NORMAL) {
- /* convert mono to 8-bit gray */
-
- for (h = height; h > 0; h--, srcLine += src_pitch, dstLine += pitch) {
- int x;
-
- for (x = 0; x < width; x++) {
- if (srcLine[(x >> 3)] & (0x80 >> (x & 7)))
- dstLine[x] = 0xff;
- }
- }
- target->pixel_mode = FT_PIXEL_MODE_GRAY;
-
- } else {
- /* copy mono to mono */
-
- int bytes = (width + 7) >> 3;
-
- for (h = height; h > 0; h--, srcLine += src_pitch, dstLine += pitch)
- memcpy (dstLine, srcLine, bytes);
- }
- break;
-
- case FT_PIXEL_MODE_GRAY:
- if (subpixel) {
- /* convert gray to ARGB32 values */
-
- for (h = height; h > 0; h--, srcLine += src_pitch, dstLine += pitch) {
- int x;
- unsigned int *dst = (unsigned int *) dstLine;
-
- for (x = 0; x < width; x++) {
- unsigned int pix = srcLine[x];
-
- pix |= (pix << 8);
- pix |= (pix << 16);
-
- dst[x] = pix;
- }
- }
- target->pixel_mode = FT_PIXEL_MODE_LCD;
- } else {
- /* copy gray into gray */
-
- for (h = height; h > 0; h--, srcLine += src_pitch, dstLine += pitch)
- memcpy (dstLine, srcLine, width);
- }
- break;
-
- case FT_PIXEL_MODE_LCD:
- if (!bgr) {
- /* convert horizontal RGB into ARGB32 */
-
- for (h = height; h > 0; h--, srcLine += src_pitch, dstLine += pitch) {
- int x;
- unsigned char *src = srcLine;
- unsigned int *dst = (unsigned int *) dstLine;
-
- for (x = 0; x < width; x++, src += 3) {
- unsigned int pix;
-
- pix = ((unsigned int)src[0] << 16) |
- ((unsigned int)src[1] << 8) |
- ((unsigned int)src[2] ) |
- ((unsigned int)src[1] << 24) ;
-
- dst[x] = pix;
- }
- }
- } else {
- /* convert horizontal BGR into ARGB32 */
-
- for (h = height; h > 0; h--, srcLine += src_pitch, dstLine += pitch) {
-
- int x;
- unsigned char *src = srcLine;
- unsigned int *dst = (unsigned int *) dstLine;
-
- for (x = 0; x < width; x++, src += 3) {
- unsigned int pix;
-
- pix = ((unsigned int)src[2] << 16) |
- ((unsigned int)src[1] << 8) |
- ((unsigned int)src[0] ) |
- ((unsigned int)src[1] << 24) ;
-
- dst[x] = pix;
- }
- }
- }
- break;
-
- case FT_PIXEL_MODE_LCD_V:
- /* convert vertical RGB into ARGB32 */
- if (!bgr) {
-
- for (h = height; h > 0; h--, srcLine += 3 * src_pitch, dstLine += pitch) {
- int x;
- unsigned char* src = srcLine;
- unsigned int* dst = (unsigned int *) dstLine;
-
- for (x = 0; x < width; x++, src += 1) {
- unsigned int pix;
- pix = ((unsigned int)src[0] << 16) |
- ((unsigned int)src[src_pitch] << 8) |
- ((unsigned int)src[src_pitch*2] ) |
- ((unsigned int)src[src_pitch] << 24) ;
- dst[x] = pix;
- }
- }
- } else {
-
- for (h = height; h > 0; h--, srcLine += 3*src_pitch, dstLine += pitch) {
- int x;
- unsigned char *src = srcLine;
- unsigned int *dst = (unsigned int *) dstLine;
-
- for (x = 0; x < width; x++, src += 1) {
- unsigned int pix;
-
- pix = ((unsigned int)src[src_pitch * 2] << 16) |
- ((unsigned int)src[src_pitch] << 8) |
- ((unsigned int)src[0] ) |
- ((unsigned int)src[src_pitch] << 24) ;
-
- dst[x] = pix;
- }
- }
- }
- break;
-
- case FT_PIXEL_MODE_BGRA:
- for (h = height; h > 0; h--, srcLine += src_pitch, dstLine += pitch)
- memcpy (dstLine, srcLine, width * 4);
- break;
-
- default:
- assert (0);
- }
-}
-
-
-/* Fills in val->image with an image surface created from @bitmap
- */
-static cairo_status_t
-_get_bitmap_surface (FT_Bitmap *bitmap,
- FT_Library library,
- cairo_bool_t own_buffer,
- cairo_font_options_t *font_options,
- cairo_image_surface_t **surface)
-{
- unsigned int width, height;
- unsigned char *data;
- int format = CAIRO_FORMAT_A8;
- int stride;
- cairo_image_surface_t *image;
- cairo_bool_t component_alpha = FALSE;
-
- width = bitmap->width;
- height = bitmap->rows;
-
- if (width == 0 || height == 0) {
- *surface = (cairo_image_surface_t *)
- cairo_image_surface_create_for_data (NULL, format, 0, 0, 0);
- return (*surface)->base.status;
- }
-
- switch (bitmap->pixel_mode) {
- case FT_PIXEL_MODE_MONO:
- stride = (((width + 31) & ~31) >> 3);
- if (own_buffer) {
- data = bitmap->buffer;
- assert (stride == bitmap->pitch);
- } else {
- data = _cairo_malloc_ab (height, stride);
- if (!data)
- return _cairo_error (CAIRO_STATUS_NO_MEMORY);
-
- if (stride == bitmap->pitch) {
- memcpy (data, bitmap->buffer, stride * height);
- } else {
- int i;
- unsigned char *source, *dest;
-
- source = bitmap->buffer;
- dest = data;
- for (i = height; i; i--) {
- memcpy (dest, source, bitmap->pitch);
- memset (dest + bitmap->pitch, '\0', stride - bitmap->pitch);
-
- source += bitmap->pitch;
- dest += stride;
- }
- }
- }
-
-#ifndef WORDS_BIGENDIAN
- {
- uint8_t *d = data;
- int count = stride * height;
-
- while (count--) {
- *d = CAIRO_BITSWAP8 (*d);
- d++;
- }
- }
-#endif
- format = CAIRO_FORMAT_A1;
- break;
-
- case FT_PIXEL_MODE_LCD:
- case FT_PIXEL_MODE_LCD_V:
- case FT_PIXEL_MODE_GRAY:
- if (font_options->antialias != CAIRO_ANTIALIAS_SUBPIXEL ||
- bitmap->pixel_mode == FT_PIXEL_MODE_GRAY)
- {
- stride = bitmap->pitch;
-
- /* We don't support stride not multiple of 4. */
- if (stride & 3)
- {
- assert (!own_buffer);
- goto convert;
- }
-
- if (own_buffer) {
- data = bitmap->buffer;
- } else {
- data = _cairo_malloc_ab (height, stride);
- if (!data)
- return _cairo_error (CAIRO_STATUS_NO_MEMORY);
-
- memcpy (data, bitmap->buffer, stride * height);
- }
-
- format = CAIRO_FORMAT_A8;
- } else {
- data = bitmap->buffer;
- stride = bitmap->pitch;
- format = CAIRO_FORMAT_ARGB32;
- component_alpha = TRUE;
- }
- break;
- case FT_PIXEL_MODE_BGRA:
- stride = width * 4;
- if (own_buffer) {
- data = bitmap->buffer;
- } else {
- data = _cairo_malloc_ab (height, stride);
- if (!data)
- return _cairo_error (CAIRO_STATUS_NO_MEMORY);
-
- memcpy (data, bitmap->buffer, stride * height);
- }
-
- if (!_cairo_is_little_endian ())
- {
- /* Byteswap. */
- unsigned int i, count = height * width;
- uint32_t *p = (uint32_t *) data;
- for (i = 0; i < count; i++)
- p[i] = be32_to_cpu (p[i]);
- }
- format = CAIRO_FORMAT_ARGB32;
- break;
- case FT_PIXEL_MODE_GRAY2:
- case FT_PIXEL_MODE_GRAY4:
- convert:
- if (!own_buffer && library)
- {
- /* This is pretty much the only case that we can get in here. */
- /* Convert to 8bit grayscale. */
-
- FT_Bitmap tmp;
- FT_Int align;
- FT_Error error;
-
- format = CAIRO_FORMAT_A8;
-
- align = cairo_format_stride_for_width (format, bitmap->width);
-
- FT_Bitmap_New( &tmp );
-
- error = FT_Bitmap_Convert( library, bitmap, &tmp, align );
- if (error)
- return _cairo_error (_ft_to_cairo_error (error));
-
- FT_Bitmap_Done( library, bitmap );
- *bitmap = tmp;
-
- stride = bitmap->pitch;
- data = _cairo_malloc_ab (height, stride);
- if (!data)
- return _cairo_error (CAIRO_STATUS_NO_MEMORY);
-
- if (bitmap->num_grays != 256)
- {
- unsigned int x, y;
- unsigned int mul = 255 / (bitmap->num_grays - 1);
- FT_Byte *p = bitmap->buffer;
- for (y = 0; y < height; y++) {
- for (x = 0; x < width; x++)
- p[x] *= mul;
- p += bitmap->pitch;
- }
- }
-
- memcpy (data, bitmap->buffer, stride * height);
- break;
- }
- /* These could be triggered by very rare types of TrueType fonts */
- default:
- if (own_buffer)
- free (bitmap->buffer);
- return _cairo_error (CAIRO_STATUS_INVALID_FORMAT);
- }
-
- /* XXX */
- *surface = image = (cairo_image_surface_t *)
- cairo_image_surface_create_for_data (data,
- format,
- width, height, stride);
- if (image->base.status) {
- free (data);
- return (*surface)->base.status;
- }
-
- if (component_alpha)
- pixman_image_set_component_alpha (image->pixman_image, TRUE);
-
- _cairo_image_surface_assume_ownership_of_data (image);
-
- _cairo_debug_check_image_surface_is_defined (&image->base);
-
- return CAIRO_STATUS_SUCCESS;
-}
-
-/* Converts an outline FT_GlyphSlot into an image
- *
- * This could go through _render_glyph_bitmap as well, letting
- * FreeType convert the outline to a bitmap, but doing it ourselves
- * has two minor advantages: first, we save a copy of the bitmap
- * buffer: we can directly use the buffer that FreeType renders
- * into.
- *
- * Second, it may help when we add support for subpixel
- * rendering: the Xft code does it this way. (Keith thinks that
- * it may also be possible to get the subpixel rendering with
- * FT_Render_Glyph: something worth looking into in more detail
- * when we add subpixel support. If so, we may want to eliminate
- * this version of the code path entirely.
- */
-static cairo_status_t
-_render_glyph_outline (FT_Face face,
- cairo_font_options_t *font_options,
- cairo_image_surface_t **surface)
-{
- int rgba = FC_RGBA_UNKNOWN;
- int lcd_filter = FT_LCD_FILTER_LEGACY;
- FT_GlyphSlot glyphslot = face->glyph;
- FT_Outline *outline = &glyphslot->outline;
- FT_Bitmap bitmap;
- FT_BBox cbox;
- unsigned int width, height;
- cairo_status_t status;
- FT_Error error;
- FT_Library library = glyphslot->library;
- FT_Render_Mode render_mode = FT_RENDER_MODE_NORMAL;
-
- switch (font_options->antialias) {
- case CAIRO_ANTIALIAS_NONE:
- render_mode = FT_RENDER_MODE_MONO;
- break;
-
- case CAIRO_ANTIALIAS_SUBPIXEL:
- case CAIRO_ANTIALIAS_BEST:
- switch (font_options->subpixel_order) {
- case CAIRO_SUBPIXEL_ORDER_DEFAULT:
- case CAIRO_SUBPIXEL_ORDER_RGB:
- case CAIRO_SUBPIXEL_ORDER_BGR:
- render_mode = FT_RENDER_MODE_LCD;
- break;
-
- case CAIRO_SUBPIXEL_ORDER_VRGB:
- case CAIRO_SUBPIXEL_ORDER_VBGR:
- render_mode = FT_RENDER_MODE_LCD_V;
- break;
- }
-
- switch (font_options->lcd_filter) {
- case CAIRO_LCD_FILTER_NONE:
- lcd_filter = FT_LCD_FILTER_NONE;
- break;
- case CAIRO_LCD_FILTER_DEFAULT:
- case CAIRO_LCD_FILTER_INTRA_PIXEL:
- lcd_filter = FT_LCD_FILTER_LEGACY;
- break;
- case CAIRO_LCD_FILTER_FIR3:
- lcd_filter = FT_LCD_FILTER_LIGHT;
- break;
- case CAIRO_LCD_FILTER_FIR5:
- lcd_filter = FT_LCD_FILTER_DEFAULT;
- break;
- }
-
- break;
-
- case CAIRO_ANTIALIAS_DEFAULT:
- case CAIRO_ANTIALIAS_GRAY:
- case CAIRO_ANTIALIAS_GOOD:
- case CAIRO_ANTIALIAS_FAST:
- render_mode = FT_RENDER_MODE_NORMAL;
- }
-
- FT_Outline_Get_CBox (outline, &cbox);
-
- cbox.xMin &= -64;
- cbox.yMin &= -64;
- cbox.xMax = (cbox.xMax + 63) & -64;
- cbox.yMax = (cbox.yMax + 63) & -64;
-
- width = (unsigned int) ((cbox.xMax - cbox.xMin) >> 6);
- height = (unsigned int) ((cbox.yMax - cbox.yMin) >> 6);
-
- if (width * height == 0) {
- cairo_format_t format;
- /* Looks like fb handles zero-sized images just fine */
- switch (render_mode) {
- case FT_RENDER_MODE_MONO:
- format = CAIRO_FORMAT_A1;
- break;
- case FT_RENDER_MODE_LCD:
- case FT_RENDER_MODE_LCD_V:
- format= CAIRO_FORMAT_ARGB32;
- break;
- case FT_RENDER_MODE_LIGHT:
- case FT_RENDER_MODE_NORMAL:
- case FT_RENDER_MODE_MAX:
- default:
- format = CAIRO_FORMAT_A8;
- break;
- }
-
- (*surface) = (cairo_image_surface_t *)
- cairo_image_surface_create_for_data (NULL, format, 0, 0, 0);
- pixman_image_set_component_alpha ((*surface)->pixman_image, TRUE);
- if ((*surface)->base.status)
- return (*surface)->base.status;
- } else {
-
- int bitmap_size;
-
- switch (render_mode) {
- case FT_RENDER_MODE_LCD:
- if (font_options->subpixel_order == CAIRO_SUBPIXEL_ORDER_BGR)
- rgba = FC_RGBA_BGR;
- else
- rgba = FC_RGBA_RGB;
- break;
-
- case FT_RENDER_MODE_LCD_V:
- if (font_options->subpixel_order == CAIRO_SUBPIXEL_ORDER_VBGR)
- rgba = FC_RGBA_VBGR;
- else
- rgba = FC_RGBA_VRGB;
- break;
-
- case FT_RENDER_MODE_MONO:
- case FT_RENDER_MODE_LIGHT:
- case FT_RENDER_MODE_NORMAL:
- case FT_RENDER_MODE_MAX:
- default:
- break;
- }
-
-#if HAVE_FT_LIBRARY_SETLCDFILTER
- FT_Library_SetLcdFilter (library, lcd_filter);
-#endif
-
- error = FT_Render_Glyph (face->glyph, render_mode);
-
-#if HAVE_FT_LIBRARY_SETLCDFILTER
- FT_Library_SetLcdFilter (library, FT_LCD_FILTER_NONE);
-#endif
-
- if (error)
- return _cairo_error (_ft_to_cairo_error (error));
-
- bitmap_size = _compute_xrender_bitmap_size (&bitmap,
- face->glyph,
- render_mode);
- if (bitmap_size < 0)
- return _cairo_error (CAIRO_STATUS_INVALID_FORMAT);
-
- bitmap.buffer = calloc (1, bitmap_size);
- if (bitmap.buffer == NULL)
- return _cairo_error (CAIRO_STATUS_NO_MEMORY);
-
- _fill_xrender_bitmap (&bitmap, face->glyph, render_mode,
- (rgba == FC_RGBA_BGR || rgba == FC_RGBA_VBGR));
-
- /* Note:
- * _get_bitmap_surface will free bitmap.buffer if there is an error
- */
- status = _get_bitmap_surface (&bitmap, NULL, TRUE, font_options, surface);
- if (unlikely (status))
- return status;
-
- /* Note: the font's coordinate system is upside down from ours, so the
- * Y coordinate of the control box needs to be negated. Moreover, device
- * offsets are position of glyph origin relative to top left while xMin
- * and yMax are offsets of top left relative to origin. Another negation.
- */
- cairo_surface_set_device_offset (&(*surface)->base,
- (double)-glyphslot->bitmap_left,
- (double)+glyphslot->bitmap_top);
- }
-
- return CAIRO_STATUS_SUCCESS;
-}
-
-/* Converts a bitmap (or other) FT_GlyphSlot into an image */
-static cairo_status_t
-_render_glyph_bitmap (FT_Face face,
- cairo_font_options_t *font_options,
- cairo_image_surface_t **surface)
-{
- FT_GlyphSlot glyphslot = face->glyph;
- cairo_status_t status;
- FT_Error error;
-
- /* According to the FreeType docs, glyphslot->format could be
- * something other than FT_GLYPH_FORMAT_OUTLINE or
- * FT_GLYPH_FORMAT_BITMAP. Calling FT_Render_Glyph gives FreeType
- * the opportunity to convert such to
- * bitmap. FT_GLYPH_FORMAT_COMPOSITE will not be encountered since
- * we avoid the FT_LOAD_NO_RECURSE flag.
- */
- error = FT_Render_Glyph (glyphslot, FT_RENDER_MODE_NORMAL);
- /* XXX ignoring all other errors for now. They are not fatal, typically
- * just a glyph-not-found. */
- if (error == FT_Err_Out_Of_Memory)
- return _cairo_error (CAIRO_STATUS_NO_MEMORY);
-
- status = _get_bitmap_surface (&glyphslot->bitmap,
- glyphslot->library,
- FALSE, font_options,
- surface);
- if (unlikely (status))
- return status;
-
- /*
- * Note: the font's coordinate system is upside down from ours, so the
- * Y coordinate of the control box needs to be negated. Moreover, device
- * offsets are position of glyph origin relative to top left while
- * bitmap_left and bitmap_top are offsets of top left relative to origin.
- * Another negation.
- */
- cairo_surface_set_device_offset (&(*surface)->base,
- -glyphslot->bitmap_left,
- +glyphslot->bitmap_top);
-
- return CAIRO_STATUS_SUCCESS;
-}
-
-static cairo_status_t
-_transform_glyph_bitmap (cairo_matrix_t * shape,
- cairo_image_surface_t ** surface)
-{
- cairo_matrix_t original_to_transformed;
- cairo_matrix_t transformed_to_original;
- cairo_image_surface_t *old_image;
- cairo_surface_t *image;
- double x[4], y[4];
- double origin_x, origin_y;
- int orig_width, orig_height;
- int i;
- int x_min, y_min, x_max, y_max;
- int width, height;
- cairo_status_t status;
- cairo_surface_pattern_t pattern;
-
- /* We want to compute a transform that takes the origin
- * (device_x_offset, device_y_offset) to 0,0, then applies
- * the "shape" portion of the font transform
- */
- original_to_transformed = *shape;
-
- cairo_surface_get_device_offset (&(*surface)->base, &origin_x, &origin_y);
- orig_width = (*surface)->width;
- orig_height = (*surface)->height;
-
- cairo_matrix_translate (&original_to_transformed,
- -origin_x, -origin_y);
-
- /* Find the bounding box of the original bitmap under that
- * transform
- */
- x[0] = 0; y[0] = 0;
- x[1] = orig_width; y[1] = 0;
- x[2] = orig_width; y[2] = orig_height;
- x[3] = 0; y[3] = orig_height;
-
- for (i = 0; i < 4; i++)
- cairo_matrix_transform_point (&original_to_transformed,
- &x[i], &y[i]);
-
- x_min = floor (x[0]); y_min = floor (y[0]);
- x_max = ceil (x[0]); y_max = ceil (y[0]);
-
- for (i = 1; i < 4; i++) {
- if (x[i] < x_min)
- x_min = floor (x[i]);
- else if (x[i] > x_max)
- x_max = ceil (x[i]);
- if (y[i] < y_min)
- y_min = floor (y[i]);
- else if (y[i] > y_max)
- y_max = ceil (y[i]);
- }
-
- /* Adjust the transform so that the bounding box starts at 0,0 ...
- * this gives our final transform from original bitmap to transformed
- * bitmap.
- */
- original_to_transformed.x0 -= x_min;
- original_to_transformed.y0 -= y_min;
-
- /* Create the transformed bitmap */
- width = x_max - x_min;
- height = y_max - y_min;
-
- transformed_to_original = original_to_transformed;
- status = cairo_matrix_invert (&transformed_to_original);
- if (unlikely (status))
- return status;
-
- if ((*surface)->format == CAIRO_FORMAT_ARGB32 &&
- !pixman_image_get_component_alpha ((*surface)->pixman_image))
- image = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, width, height);
- else
- image = cairo_image_surface_create (CAIRO_FORMAT_A8, width, height);
- if (unlikely (image->status))
- return image->status;
-
- /* Draw the original bitmap transformed into the new bitmap
- */
- _cairo_pattern_init_for_surface (&pattern, &(*surface)->base);
- cairo_pattern_set_matrix (&pattern.base, &transformed_to_original);
-
- status = _cairo_surface_paint (image,
- CAIRO_OPERATOR_SOURCE,
- &pattern.base,
- NULL);
-
- _cairo_pattern_fini (&pattern.base);
-
- if (unlikely (status)) {
- cairo_surface_destroy (image);
- return status;
- }
-
- /* Now update the cache entry for the new bitmap, recomputing
- * the origin based on the final transform.
- */
- cairo_matrix_transform_point (&original_to_transformed,
- &origin_x, &origin_y);
-
- old_image = (*surface);
- (*surface) = (cairo_image_surface_t *)image;
-
- /* Note: we converted subpixel-rendered RGBA images to grayscale,
- * so, no need to copy component alpha to new image. */
-
- cairo_surface_destroy (&old_image->base);
-
- cairo_surface_set_device_offset (&(*surface)->base,
- _cairo_lround (origin_x),
- _cairo_lround (origin_y));
- return CAIRO_STATUS_SUCCESS;
-}
-
-static const cairo_unscaled_font_backend_t cairo_ft_unscaled_font_backend = {
- _cairo_ft_unscaled_font_destroy,
-#if 0
- _cairo_ft_unscaled_font_create_glyph
-#endif
-};
-
-/* #cairo_ft_scaled_font_t */
-
-typedef struct _cairo_ft_scaled_font {
- cairo_scaled_font_t base;
- cairo_ft_unscaled_font_t *unscaled;
- cairo_ft_options_t ft_options;
-} cairo_ft_scaled_font_t;
-
-static const cairo_scaled_font_backend_t _cairo_ft_scaled_font_backend;
-
-#if CAIRO_HAS_FC_FONT
-/* The load flags passed to FT_Load_Glyph control aspects like hinting and
- * antialiasing. Here we compute them from the fields of a FcPattern.
- */
-static void
-_get_pattern_ft_options (FcPattern *pattern, cairo_ft_options_t *ret)
-{
- FcBool antialias, vertical_layout, hinting, autohint, bitmap, embolden;
- cairo_ft_options_t ft_options;
- int rgba;
-#ifdef FC_HINT_STYLE
- int hintstyle;
-#endif
- char *variations;
-
- _cairo_font_options_init_default (&ft_options.base);
- ft_options.load_flags = FT_LOAD_DEFAULT;
- ft_options.synth_flags = 0;
-
-#ifndef FC_EMBEDDED_BITMAP
-#define FC_EMBEDDED_BITMAP "embeddedbitmap"
-#endif
-
- /* Check whether to force use of embedded bitmaps */
- if (FcPatternGetBool (pattern,
- FC_EMBEDDED_BITMAP, 0, &bitmap) != FcResultMatch)
- bitmap = FcFalse;
-
- /* disable antialiasing if requested */
- if (FcPatternGetBool (pattern,
- FC_ANTIALIAS, 0, &antialias) != FcResultMatch)
- antialias = FcTrue;
-
- if (antialias) {
- cairo_subpixel_order_t subpixel_order;
- int lcd_filter;
-
- /* disable hinting if requested */
- if (FcPatternGetBool (pattern,
- FC_HINTING, 0, &hinting) != FcResultMatch)
- hinting = FcTrue;
-
- if (FcPatternGetInteger (pattern,
- FC_RGBA, 0, &rgba) != FcResultMatch)
- rgba = FC_RGBA_UNKNOWN;
-
- switch (rgba) {
- case FC_RGBA_RGB:
- subpixel_order = CAIRO_SUBPIXEL_ORDER_RGB;
- break;
- case FC_RGBA_BGR:
- subpixel_order = CAIRO_SUBPIXEL_ORDER_BGR;
- break;
- case FC_RGBA_VRGB:
- subpixel_order = CAIRO_SUBPIXEL_ORDER_VRGB;
- break;
- case FC_RGBA_VBGR:
- subpixel_order = CAIRO_SUBPIXEL_ORDER_VBGR;
- break;
- case FC_RGBA_UNKNOWN:
- case FC_RGBA_NONE:
- default:
- subpixel_order = CAIRO_SUBPIXEL_ORDER_DEFAULT;
- break;
- }
-
- if (subpixel_order != CAIRO_SUBPIXEL_ORDER_DEFAULT) {
- ft_options.base.subpixel_order = subpixel_order;
- ft_options.base.antialias = CAIRO_ANTIALIAS_SUBPIXEL;
- }
-
- if (FcPatternGetInteger (pattern,
- FC_LCD_FILTER, 0, &lcd_filter) == FcResultMatch)
- {
- switch (lcd_filter) {
- case FC_LCD_NONE:
- ft_options.base.lcd_filter = CAIRO_LCD_FILTER_NONE;
- break;
- case FC_LCD_DEFAULT:
- ft_options.base.lcd_filter = CAIRO_LCD_FILTER_FIR5;
- break;
- case FC_LCD_LIGHT:
- ft_options.base.lcd_filter = CAIRO_LCD_FILTER_FIR3;
- break;
- case FC_LCD_LEGACY:
- ft_options.base.lcd_filter = CAIRO_LCD_FILTER_INTRA_PIXEL;
- break;
- }
- }
-
-#ifdef FC_HINT_STYLE
- if (FcPatternGetInteger (pattern,
- FC_HINT_STYLE, 0, &hintstyle) != FcResultMatch)
- hintstyle = FC_HINT_FULL;
-
- if (!hinting)
- hintstyle = FC_HINT_NONE;
-
- switch (hintstyle) {
- case FC_HINT_NONE:
- ft_options.base.hint_style = CAIRO_HINT_STYLE_NONE;
- break;
- case FC_HINT_SLIGHT:
- ft_options.base.hint_style = CAIRO_HINT_STYLE_SLIGHT;
- break;
- case FC_HINT_MEDIUM:
- default:
- ft_options.base.hint_style = CAIRO_HINT_STYLE_MEDIUM;
- break;
- case FC_HINT_FULL:
- ft_options.base.hint_style = CAIRO_HINT_STYLE_FULL;
- break;
- }
-#else /* !FC_HINT_STYLE */
- if (!hinting) {
- ft_options.base.hint_style = CAIRO_HINT_STYLE_NONE;
- }
-#endif /* FC_HINT_STYLE */
-
- /* Force embedded bitmaps off if no hinting requested */
- if (ft_options.base.hint_style == CAIRO_HINT_STYLE_NONE)
- bitmap = FcFalse;
-
- if (!bitmap)
- ft_options.load_flags |= FT_LOAD_NO_BITMAP;
-
- } else {
- ft_options.base.antialias = CAIRO_ANTIALIAS_NONE;
- }
-
- /* force autohinting if requested */
- if (FcPatternGetBool (pattern,
- FC_AUTOHINT, 0, &autohint) != FcResultMatch)
- autohint = FcFalse;
-
- if (autohint)
- ft_options.load_flags |= FT_LOAD_FORCE_AUTOHINT;
-
- if (FcPatternGetBool (pattern,
- FC_VERTICAL_LAYOUT, 0, &vertical_layout) != FcResultMatch)
- vertical_layout = FcFalse;
-
- if (vertical_layout)
- ft_options.load_flags |= FT_LOAD_VERTICAL_LAYOUT;
-
-#ifndef FC_EMBOLDEN
-#define FC_EMBOLDEN "embolden"
-#endif
- if (FcPatternGetBool (pattern,
- FC_EMBOLDEN, 0, &embolden) != FcResultMatch)
- embolden = FcFalse;
-
- if (embolden)
- ft_options.synth_flags |= CAIRO_FT_SYNTHESIZE_BOLD;
-
-#ifndef FC_FONT_VARIATIONS
-#define FC_FONT_VARIATIONS "fontvariations"
-#endif
- if (FcPatternGetString (pattern, FC_FONT_VARIATIONS, 0, (FcChar8 **) &variations) == FcResultMatch) {
- ft_options.base.variations = strdup (variations);
- }
-
- *ret = ft_options;
-}
-#endif
-
-static void
-_cairo_ft_options_merge (cairo_ft_options_t *options,
- cairo_ft_options_t *other)
-{
- int load_flags = other->load_flags;
- int load_target = FT_LOAD_TARGET_NORMAL;
-
- /* clear load target mode */
- load_flags &= ~(FT_LOAD_TARGET_(FT_LOAD_TARGET_MODE(other->load_flags)));
-
- if (load_flags & FT_LOAD_NO_HINTING)
- other->base.hint_style = CAIRO_HINT_STYLE_NONE;
-
- if (other->base.antialias == CAIRO_ANTIALIAS_NONE ||
- options->base.antialias == CAIRO_ANTIALIAS_NONE) {
- options->base.antialias = CAIRO_ANTIALIAS_NONE;
- options->base.subpixel_order = CAIRO_SUBPIXEL_ORDER_DEFAULT;
- }
-
- if (other->base.antialias == CAIRO_ANTIALIAS_SUBPIXEL &&
- (options->base.antialias == CAIRO_ANTIALIAS_DEFAULT ||
- options->base.antialias == CAIRO_ANTIALIAS_GRAY)) {
- options->base.antialias = CAIRO_ANTIALIAS_SUBPIXEL;
- options->base.subpixel_order = other->base.subpixel_order;
- }
-
- if (options->base.hint_style == CAIRO_HINT_STYLE_DEFAULT)
- options->base.hint_style = other->base.hint_style;
-
- if (other->base.hint_style == CAIRO_HINT_STYLE_NONE)
- options->base.hint_style = CAIRO_HINT_STYLE_NONE;
-
- if (options->base.lcd_filter == CAIRO_LCD_FILTER_DEFAULT)
- options->base.lcd_filter = other->base.lcd_filter;
-
- if (other->base.lcd_filter == CAIRO_LCD_FILTER_NONE)
- options->base.lcd_filter = CAIRO_LCD_FILTER_NONE;
-
- if (options->base.antialias == CAIRO_ANTIALIAS_NONE) {
- if (options->base.hint_style == CAIRO_HINT_STYLE_NONE)
- load_flags |= FT_LOAD_NO_HINTING;
- else
- load_target = FT_LOAD_TARGET_MONO;
- load_flags |= FT_LOAD_MONOCHROME;
- } else {
- switch (options->base.hint_style) {
- case CAIRO_HINT_STYLE_NONE:
- load_flags |= FT_LOAD_NO_HINTING;
- break;
- case CAIRO_HINT_STYLE_SLIGHT:
- load_target = FT_LOAD_TARGET_LIGHT;
- break;
- case CAIRO_HINT_STYLE_MEDIUM:
- break;
- case CAIRO_HINT_STYLE_FULL:
- case CAIRO_HINT_STYLE_DEFAULT:
- if (options->base.antialias == CAIRO_ANTIALIAS_SUBPIXEL) {
- switch (options->base.subpixel_order) {
- case CAIRO_SUBPIXEL_ORDER_DEFAULT:
- case CAIRO_SUBPIXEL_ORDER_RGB:
- case CAIRO_SUBPIXEL_ORDER_BGR:
- load_target = FT_LOAD_TARGET_LCD;
- break;
- case CAIRO_SUBPIXEL_ORDER_VRGB:
- case CAIRO_SUBPIXEL_ORDER_VBGR:
- load_target = FT_LOAD_TARGET_LCD_V;
- break;
- }
- }
- break;
- }
- }
-
- if (other->base.variations) {
- if (options->base.variations) {
- char *p;
-
- /* 'merge' variations by concatenating - later entries win */
- p = malloc (strlen (other->base.variations) + strlen (options->base.variations) + 2);
- p[0] = 0;
- strcat (p, other->base.variations);
- strcat (p, ",");
- strcat (p, options->base.variations);
- free (options->base.variations);
- options->base.variations = p;
- }
- else {
- options->base.variations = strdup (other->base.variations);
- }
- }
-
- options->load_flags = load_flags | load_target;
- options->synth_flags = other->synth_flags;
-}
-
-static cairo_status_t
-_cairo_ft_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 **font_out)
-{
- cairo_ft_font_face_t *font_face = abstract_font_face;
- cairo_ft_scaled_font_t *scaled_font;
- FT_Face face;
- FT_Size_Metrics *metrics;
- cairo_font_extents_t fs_metrics;
- cairo_status_t status;
- cairo_ft_unscaled_font_t *unscaled;
-
- assert (font_face->unscaled);
-
- face = _cairo_ft_unscaled_font_lock_face (font_face->unscaled);
- if (unlikely (face == NULL)) /* backend error */
- return _cairo_error (CAIRO_STATUS_NO_MEMORY);
-
- scaled_font = _cairo_malloc (sizeof (cairo_ft_scaled_font_t));
- if (unlikely (scaled_font == NULL)) {
- status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
- goto FAIL;
- }
-
- scaled_font->unscaled = unscaled = font_face->unscaled;
- _cairo_unscaled_font_reference (&unscaled->base);
-
- _cairo_font_options_init_copy (&scaled_font->ft_options.base, options);
- _cairo_ft_options_merge (&scaled_font->ft_options, &font_face->ft_options);
-
- status = _cairo_scaled_font_init (&scaled_font->base,
- &font_face->base,
- font_matrix, ctm, options,
- &_cairo_ft_scaled_font_backend);
- if (unlikely (status))
- goto CLEANUP_SCALED_FONT;
-
- status = _cairo_ft_unscaled_font_set_scale (unscaled,
- &scaled_font->base.scale);
- if (unlikely (status)) {
- /* This can only fail if we encounter an error with the underlying
- * font, so propagate the error back to the font-face. */
- _cairo_ft_unscaled_font_unlock_face (unscaled);
- _cairo_unscaled_font_destroy (&unscaled->base);
- free (scaled_font);
- return status;
- }
-
-
- metrics = &face->size->metrics;
-
- /*
- * Get to unscaled metrics so that the upper level can get back to
- * user space
- *
- * Also use this path for bitmap-only fonts. The other branch uses
- * face members that are only relevant for scalable fonts. This is
- * detected by simply checking for units_per_EM==0.
- */
- if (scaled_font->base.options.hint_metrics != CAIRO_HINT_METRICS_OFF ||
- face->units_per_EM == 0) {
- double x_factor, y_factor;
-
- if (unscaled->x_scale == 0)
- x_factor = 0;
- else
- x_factor = 1 / unscaled->x_scale;
-
- if (unscaled->y_scale == 0)
- y_factor = 0;
- else
- y_factor = 1 / unscaled->y_scale;
-
- fs_metrics.ascent = DOUBLE_FROM_26_6(metrics->ascender) * y_factor;
- fs_metrics.descent = DOUBLE_FROM_26_6(- metrics->descender) * y_factor;
- fs_metrics.height = DOUBLE_FROM_26_6(metrics->height) * y_factor;
- if (!_cairo_ft_scaled_font_is_vertical (&scaled_font->base)) {
- fs_metrics.max_x_advance = DOUBLE_FROM_26_6(metrics->max_advance) * x_factor;
- fs_metrics.max_y_advance = 0;
- } else {
- fs_metrics.max_x_advance = 0;
- fs_metrics.max_y_advance = DOUBLE_FROM_26_6(metrics->max_advance) * y_factor;
- }
- } else {
- double scale = face->units_per_EM;
-
- fs_metrics.ascent = face->ascender / scale;
- fs_metrics.descent = - face->descender / scale;
- fs_metrics.height = face->height / scale;
- if (!_cairo_ft_scaled_font_is_vertical (&scaled_font->base)) {
- fs_metrics.max_x_advance = face->max_advance_width / scale;
- fs_metrics.max_y_advance = 0;
- } else {
- fs_metrics.max_x_advance = 0;
- fs_metrics.max_y_advance = face->max_advance_height / scale;
- }
- }
-
- status = _cairo_scaled_font_set_metrics (&scaled_font->base, &fs_metrics);
- if (unlikely (status))
- goto CLEANUP_SCALED_FONT;
-
- _cairo_ft_unscaled_font_unlock_face (unscaled);
-
- *font_out = &scaled_font->base;
- return CAIRO_STATUS_SUCCESS;
-
- CLEANUP_SCALED_FONT:
- _cairo_unscaled_font_destroy (&unscaled->base);
- free (scaled_font);
- FAIL:
- _cairo_ft_unscaled_font_unlock_face (font_face->unscaled);
- *font_out = _cairo_scaled_font_create_in_error (status);
- return CAIRO_STATUS_SUCCESS; /* non-backend error */
-}
-
-cairo_bool_t
-_cairo_scaled_font_is_ft (cairo_scaled_font_t *scaled_font)
-{
- return scaled_font->backend == &_cairo_ft_scaled_font_backend;
-}
-
-static void
-_cairo_ft_scaled_font_fini (void *abstract_font)
-{
- cairo_ft_scaled_font_t *scaled_font = abstract_font;
-
- if (scaled_font == NULL)
- return;
-
- _cairo_unscaled_font_destroy (&scaled_font->unscaled->base);
-}
-
-static int
-_move_to (FT_Vector *to, void *closure)
-{
- cairo_path_fixed_t *path = closure;
- cairo_fixed_t x, y;
-
- x = _cairo_fixed_from_26_6 (to->x);
- y = _cairo_fixed_from_26_6 (to->y);
-
- if (_cairo_path_fixed_close_path (path) != CAIRO_STATUS_SUCCESS)
- return 1;
- if (_cairo_path_fixed_move_to (path, x, y) != CAIRO_STATUS_SUCCESS)
- return 1;
-
- return 0;
-}
-
-static int
-_line_to (FT_Vector *to, void *closure)
-{
- cairo_path_fixed_t *path = closure;
- cairo_fixed_t x, y;
-
- x = _cairo_fixed_from_26_6 (to->x);
- y = _cairo_fixed_from_26_6 (to->y);
-
- if (_cairo_path_fixed_line_to (path, x, y) != CAIRO_STATUS_SUCCESS)
- return 1;
-
- return 0;
-}
-
-static int
-_conic_to (FT_Vector *control, FT_Vector *to, void *closure)
-{
- cairo_path_fixed_t *path = closure;
-
- cairo_fixed_t x0, y0;
- cairo_fixed_t x1, y1;
- cairo_fixed_t x2, y2;
- cairo_fixed_t x3, y3;
- cairo_point_t conic;
-
- if (! _cairo_path_fixed_get_current_point (path, &x0, &y0))
- return 1;
-
- conic.x = _cairo_fixed_from_26_6 (control->x);
- conic.y = _cairo_fixed_from_26_6 (control->y);
-
- x3 = _cairo_fixed_from_26_6 (to->x);
- y3 = _cairo_fixed_from_26_6 (to->y);
-
- x1 = x0 + 2.0/3.0 * (conic.x - x0);
- y1 = y0 + 2.0/3.0 * (conic.y - y0);
-
- x2 = x3 + 2.0/3.0 * (conic.x - x3);
- y2 = y3 + 2.0/3.0 * (conic.y - y3);
-
- if (_cairo_path_fixed_curve_to (path,
- x1, y1,
- x2, y2,
- x3, y3) != CAIRO_STATUS_SUCCESS)
- return 1;
-
- return 0;
-}
-
-static int
-_cubic_to (FT_Vector *control1, FT_Vector *control2,
- FT_Vector *to, void *closure)
-{
- cairo_path_fixed_t *path = closure;
- cairo_fixed_t x0, y0;
- cairo_fixed_t x1, y1;
- cairo_fixed_t x2, y2;
-
- x0 = _cairo_fixed_from_26_6 (control1->x);
- y0 = _cairo_fixed_from_26_6 (control1->y);
-
- x1 = _cairo_fixed_from_26_6 (control2->x);
- y1 = _cairo_fixed_from_26_6 (control2->y);
-
- x2 = _cairo_fixed_from_26_6 (to->x);
- y2 = _cairo_fixed_from_26_6 (to->y);
-
- if (_cairo_path_fixed_curve_to (path,
- x0, y0,
- x1, y1,
- x2, y2) != CAIRO_STATUS_SUCCESS)
- return 1;
-
- return 0;
-}
-
-static cairo_status_t
-_decompose_glyph_outline (FT_Face face,
- cairo_font_options_t *options,
- cairo_path_fixed_t **pathp)
-{
- static const FT_Outline_Funcs outline_funcs = {
- (FT_Outline_MoveToFunc)_move_to,
- (FT_Outline_LineToFunc)_line_to,
- (FT_Outline_ConicToFunc)_conic_to,
- (FT_Outline_CubicToFunc)_cubic_to,
- 0, /* shift */
- 0, /* delta */
- };
- static const FT_Matrix invert_y = {
- DOUBLE_TO_16_16 (1.0), 0,
- 0, DOUBLE_TO_16_16 (-1.0),
- };
-
- FT_GlyphSlot glyph;
- cairo_path_fixed_t *path;
- cairo_status_t status;
-
- path = _cairo_path_fixed_create ();
- if (!path)
- return _cairo_error (CAIRO_STATUS_NO_MEMORY);
-
- glyph = face->glyph;
-
- /* Font glyphs have an inverted Y axis compared to cairo. */
- FT_Outline_Transform (&glyph->outline, &invert_y);
- if (FT_Outline_Decompose (&glyph->outline, &outline_funcs, path)) {
- _cairo_path_fixed_destroy (path);
- return _cairo_error (CAIRO_STATUS_NO_MEMORY);
- }
-
- status = _cairo_path_fixed_close_path (path);
- if (unlikely (status)) {
- _cairo_path_fixed_destroy (path);
- return status;
- }
-
- *pathp = path;
-
- return CAIRO_STATUS_SUCCESS;
-}
-
-/*
- * Translate glyph to match its metrics.
- */
-static void
-_cairo_ft_scaled_glyph_vertical_layout_bearing_fix (void *abstract_font,
- FT_GlyphSlot glyph)
-{
- cairo_ft_scaled_font_t *scaled_font = abstract_font;
- FT_Vector vector;
-
- vector.x = glyph->metrics.vertBearingX - glyph->metrics.horiBearingX;
- vector.y = -glyph->metrics.vertBearingY - glyph->metrics.horiBearingY;
-
- if (glyph->format == FT_GLYPH_FORMAT_OUTLINE) {
- FT_Vector_Transform (&vector, &scaled_font->unscaled->Current_Shape);
- FT_Outline_Translate(&glyph->outline, vector.x, vector.y);
- } else if (glyph->format == FT_GLYPH_FORMAT_BITMAP) {
- glyph->bitmap_left += vector.x / 64;
- glyph->bitmap_top += vector.y / 64;
- }
-}
-
-static void
-cairo_ft_apply_variations (FT_Face face,
- cairo_ft_scaled_font_t *scaled_font)
-{
- FT_MM_Var *ft_mm_var;
- FT_Error ret;
- unsigned int instance_id = scaled_font->unscaled->id >> 16;
-
- ret = FT_Get_MM_Var (face, &ft_mm_var);
- if (ret == 0) {
- FT_Fixed *current_coords;
- FT_Fixed *coords;
- unsigned int i;
- const char *p;
-
- coords = malloc (sizeof (FT_Fixed) * ft_mm_var->num_axis);
- /* FIXME check coords. */
-
- if (scaled_font->unscaled->variations)
- {
- memcpy (coords, scaled_font->unscaled->variations, ft_mm_var->num_axis * sizeof (*coords));
- }
- else if (instance_id && instance_id <= ft_mm_var->num_namedstyles)
- {
- FT_Var_Named_Style *instance = &ft_mm_var->namedstyle[instance_id - 1];
- memcpy (coords, instance->coords, ft_mm_var->num_axis * sizeof (*coords));
- }
- else
- for (i = 0; i < ft_mm_var->num_axis; i++)
- coords[i] = ft_mm_var->axis[i].def;
-
- p = scaled_font->ft_options.base.variations;
- while (p && *p) {
- const char *start;
- const char *end, *end2;
- FT_ULong tag;
- double value;
-
- while (_cairo_isspace (*p)) p++;
-
- start = p;
- end = strchr (p, ',');
- if (end && (end - p < 6))
- goto skip;
-
- tag = FT_MAKE_TAG(p[0], p[1], p[2], p[3]);
-
- p += 4;
- while (_cairo_isspace (*p)) p++;
- if (*p == '=') p++;
-
- if (p - start < 5)
- goto skip;
-
- value = _cairo_strtod (p, (char **) &end2);
-
- while (end2 && _cairo_isspace (*end2)) end2++;
-
- if (end2 && (*end2 != ',' && *end2 != '\0'))
- goto skip;
-
- for (i = 0; i < ft_mm_var->num_axis; i++) {
- if (ft_mm_var->axis[i].tag == tag) {
- coords[i] = (FT_Fixed)(value*65536);
- break;
- }
- }
-
-skip:
- p = end ? end + 1 : NULL;
- }
-
- current_coords = malloc (sizeof (FT_Fixed) * ft_mm_var->num_axis);
-#ifdef HAVE_FT_GET_VAR_DESIGN_COORDINATES
- ret = FT_Get_Var_Design_Coordinates (face, ft_mm_var->num_axis, current_coords);
- if (ret == 0) {
- for (i = 0; i < ft_mm_var->num_axis; i++) {
- if (coords[i] != current_coords[i])
- break;
- }
- if (i == ft_mm_var->num_axis)
- goto done;
- }
-#endif
-
- FT_Set_Var_Design_Coordinates (face, ft_mm_var->num_axis, coords);
-done:
- free (coords);
- free (current_coords);
- free (ft_mm_var);
- }
-}
-
-static cairo_int_status_t
-_cairo_ft_scaled_glyph_load_glyph (cairo_ft_scaled_font_t *scaled_font,
- cairo_scaled_glyph_t *scaled_glyph,
- FT_Face face,
- int load_flags,
- cairo_bool_t use_em_size,
- cairo_bool_t vertical_layout)
-{
- FT_Error error;
- cairo_status_t status;
-
- if (use_em_size) {
- cairo_matrix_t em_size;
- cairo_matrix_init_scale (&em_size, face->units_per_EM, face->units_per_EM);
- status = _cairo_ft_unscaled_font_set_scale (scaled_font->unscaled, &em_size);
- } else {
- status = _cairo_ft_unscaled_font_set_scale (scaled_font->unscaled,
- &scaled_font->base.scale);
- }
- if (unlikely (status))
- return status;
-
- cairo_ft_apply_variations (face, scaled_font);
-
- error = FT_Load_Glyph (face,
- _cairo_scaled_glyph_index(scaled_glyph),
- load_flags);
- /* XXX ignoring all other errors for now. They are not fatal, typically
- * just a glyph-not-found. */
- if (error == FT_Err_Out_Of_Memory)
- return _cairo_error (CAIRO_STATUS_NO_MEMORY);
-
- /*
- * synthesize glyphs if requested
- */
-#if HAVE_FT_GLYPHSLOT_EMBOLDEN
- if (scaled_font->ft_options.synth_flags & CAIRO_FT_SYNTHESIZE_BOLD)
- FT_GlyphSlot_Embolden (face->glyph);
-#endif
-
-#if HAVE_FT_GLYPHSLOT_OBLIQUE
- if (scaled_font->ft_options.synth_flags & CAIRO_FT_SYNTHESIZE_OBLIQUE)
- FT_GlyphSlot_Oblique (face->glyph);
-#endif
-
- if (vertical_layout)
- _cairo_ft_scaled_glyph_vertical_layout_bearing_fix (scaled_font, face->glyph);
-
- return CAIRO_STATUS_SUCCESS;
-}
-
-static cairo_int_status_t
-_cairo_ft_scaled_glyph_init (void *abstract_font,
- cairo_scaled_glyph_t *scaled_glyph,
- cairo_scaled_glyph_info_t info)
-{
- cairo_text_extents_t fs_metrics;
- cairo_ft_scaled_font_t *scaled_font = abstract_font;
- cairo_ft_unscaled_font_t *unscaled = scaled_font->unscaled;
- FT_GlyphSlot glyph;
- FT_Face face;
- int load_flags = scaled_font->ft_options.load_flags;
- FT_Glyph_Metrics *metrics;
- double x_factor, y_factor;
- cairo_bool_t vertical_layout = FALSE;
- cairo_status_t status = CAIRO_STATUS_SUCCESS;
- cairo_bool_t scaled_glyph_loaded = FALSE;
-
- face = _cairo_ft_unscaled_font_lock_face (unscaled);
- if (!face)
- return _cairo_error (CAIRO_STATUS_NO_MEMORY);
-
- /* Ignore global advance unconditionally */
- load_flags |= FT_LOAD_IGNORE_GLOBAL_ADVANCE_WIDTH;
-
- if ((info & CAIRO_SCALED_GLYPH_INFO_PATH) != 0 &&
- (info & (CAIRO_SCALED_GLYPH_INFO_SURFACE |
- CAIRO_SCALED_GLYPH_INFO_COLOR_SURFACE)) == 0) {
- load_flags |= FT_LOAD_NO_BITMAP;
- }
-
- /*
- * Don't pass FT_LOAD_VERTICAL_LAYOUT to FT_Load_Glyph here as
- * suggested by freetype people.
- */
- if (load_flags & FT_LOAD_VERTICAL_LAYOUT) {
- load_flags &= ~FT_LOAD_VERTICAL_LAYOUT;
- vertical_layout = TRUE;
- }
-
- load_flags |= FT_LOAD_COLOR;
-
-
- if (info & CAIRO_SCALED_GLYPH_INFO_METRICS) {
-
- cairo_bool_t hint_metrics = scaled_font->base.options.hint_metrics != CAIRO_HINT_METRICS_OFF;
-
- status = _cairo_ft_scaled_glyph_load_glyph (scaled_font,
- scaled_glyph,
- face,
- load_flags,
- !hint_metrics,
- vertical_layout);
- if (unlikely (status))
- goto FAIL;
-
- glyph = face->glyph;
- scaled_glyph_loaded = hint_metrics;
-
- /*
- * Compute font-space metrics
- */
- metrics = &glyph->metrics;
-
- if (unscaled->x_scale == 0)
- x_factor = 0;
- else
- x_factor = 1 / unscaled->x_scale;
-
- if (unscaled->y_scale == 0)
- y_factor = 0;
- else
- y_factor = 1 / unscaled->y_scale;
-
- /*
- * Note: Y coordinates of the horizontal bearing need to be negated.
- *
- * Scale metrics back to glyph space from the scaled glyph space returned
- * by FreeType
- *
- * If we want hinted metrics but aren't asking for hinted glyphs from
- * FreeType, then we need to do the metric hinting ourselves.
- */
-
- if (hint_metrics && (load_flags & FT_LOAD_NO_HINTING))
- {
- FT_Pos x1, x2;
- FT_Pos y1, y2;
- FT_Pos advance;
-
- if (!vertical_layout) {
- x1 = (metrics->horiBearingX) & -64;
- x2 = (metrics->horiBearingX + metrics->width + 63) & -64;
- y1 = (-metrics->horiBearingY) & -64;
- y2 = (-metrics->horiBearingY + metrics->height + 63) & -64;
-
- advance = ((metrics->horiAdvance + 32) & -64);
-
- fs_metrics.x_bearing = DOUBLE_FROM_26_6 (x1) * x_factor;
- fs_metrics.y_bearing = DOUBLE_FROM_26_6 (y1) * y_factor;
-
- fs_metrics.width = DOUBLE_FROM_26_6 (x2 - x1) * x_factor;
- fs_metrics.height = DOUBLE_FROM_26_6 (y2 - y1) * y_factor;
-
- fs_metrics.x_advance = DOUBLE_FROM_26_6 (advance) * x_factor;
- fs_metrics.y_advance = 0;
- } else {
- x1 = (metrics->vertBearingX) & -64;
- x2 = (metrics->vertBearingX + metrics->width + 63) & -64;
- y1 = (metrics->vertBearingY) & -64;
- y2 = (metrics->vertBearingY + metrics->height + 63) & -64;
-
- advance = ((metrics->vertAdvance + 32) & -64);
-
- fs_metrics.x_bearing = DOUBLE_FROM_26_6 (x1) * x_factor;
- fs_metrics.y_bearing = DOUBLE_FROM_26_6 (y1) * y_factor;
-
- fs_metrics.width = DOUBLE_FROM_26_6 (x2 - x1) * x_factor;
- fs_metrics.height = DOUBLE_FROM_26_6 (y2 - y1) * y_factor;
-
- fs_metrics.x_advance = 0;
- fs_metrics.y_advance = DOUBLE_FROM_26_6 (advance) * y_factor;
- }
- } else {
- fs_metrics.width = DOUBLE_FROM_26_6 (metrics->width) * x_factor;
- fs_metrics.height = DOUBLE_FROM_26_6 (metrics->height) * y_factor;
-
- if (!vertical_layout) {
- fs_metrics.x_bearing = DOUBLE_FROM_26_6 (metrics->horiBearingX) * x_factor;
- fs_metrics.y_bearing = DOUBLE_FROM_26_6 (-metrics->horiBearingY) * y_factor;
-
- if (hint_metrics || glyph->format != FT_GLYPH_FORMAT_OUTLINE)
- fs_metrics.x_advance = DOUBLE_FROM_26_6 (metrics->horiAdvance) * x_factor;
- else
- fs_metrics.x_advance = DOUBLE_FROM_16_16 (glyph->linearHoriAdvance) * x_factor;
- fs_metrics.y_advance = 0 * y_factor;
- } else {
- fs_metrics.x_bearing = DOUBLE_FROM_26_6 (metrics->vertBearingX) * x_factor;
- fs_metrics.y_bearing = DOUBLE_FROM_26_6 (metrics->vertBearingY) * y_factor;
-
- fs_metrics.x_advance = 0 * x_factor;
- if (hint_metrics || glyph->format != FT_GLYPH_FORMAT_OUTLINE)
- fs_metrics.y_advance = DOUBLE_FROM_26_6 (metrics->vertAdvance) * y_factor;
- else
- fs_metrics.y_advance = DOUBLE_FROM_16_16 (glyph->linearVertAdvance) * y_factor;
- }
- }
-
- _cairo_scaled_glyph_set_metrics (scaled_glyph,
- &scaled_font->base,
- &fs_metrics);
- }
-
-LOAD:
- if (info & (CAIRO_SCALED_GLYPH_INFO_SURFACE | CAIRO_SCALED_GLYPH_INFO_COLOR_SURFACE)) {
- cairo_image_surface_t *surface;
-
- if (!scaled_glyph_loaded) {
- status = _cairo_ft_scaled_glyph_load_glyph (scaled_font,
- scaled_glyph,
- face,
- load_flags,
- FALSE,
- vertical_layout);
- if (unlikely (status))
- goto FAIL;
-
- glyph = face->glyph;
- scaled_glyph_loaded = TRUE;
- }
-
- if (glyph->format == FT_GLYPH_FORMAT_OUTLINE) {
- status = _render_glyph_outline (face, &scaled_font->ft_options.base,
- &surface);
- } else {
- status = _render_glyph_bitmap (face, &scaled_font->ft_options.base,
- &surface);
- if (likely (status == CAIRO_STATUS_SUCCESS) &&
- unscaled->have_shape)
- {
- status = _transform_glyph_bitmap (&unscaled->current_shape,
- &surface);
- if (unlikely (status))
- cairo_surface_destroy (&surface->base);
- }
- }
- if (unlikely (status))
- goto FAIL;
-
- if (pixman_image_get_format (surface->pixman_image) == PIXMAN_a8r8g8b8 &&
- !pixman_image_get_component_alpha (surface->pixman_image)) {
- _cairo_scaled_glyph_set_color_surface (scaled_glyph,
- &scaled_font->base,
- surface);
- } else {
- _cairo_scaled_glyph_set_surface (scaled_glyph,
- &scaled_font->base,
- surface);
- }
- }
-
- if (((info & (CAIRO_SCALED_GLYPH_INFO_SURFACE | CAIRO_SCALED_GLYPH_INFO_COLOR_SURFACE)) != 0) &&
- ((scaled_glyph->has_info & CAIRO_SCALED_GLYPH_INFO_SURFACE) == 0)) {
- /*
- * A kludge -- load again, without color.
- * No need to load the metrics again, though
- */
- scaled_glyph_loaded = FALSE;
- info &= ~CAIRO_SCALED_GLYPH_INFO_METRICS;
- load_flags &= ~FT_LOAD_COLOR;
- goto LOAD;
- }
-
- if (info & CAIRO_SCALED_GLYPH_INFO_PATH) {
- cairo_path_fixed_t *path = NULL; /* hide compiler warning */
-
- /*
- * A kludge -- the above code will trash the outline,
- * so reload it. This will probably never occur though
- */
- if ((info & (CAIRO_SCALED_GLYPH_INFO_SURFACE | CAIRO_SCALED_GLYPH_INFO_COLOR_SURFACE)) != 0) {
- scaled_glyph_loaded = FALSE;
- load_flags |= FT_LOAD_NO_BITMAP;
- }
-
- if (!scaled_glyph_loaded) {
- status = _cairo_ft_scaled_glyph_load_glyph (scaled_font,
- scaled_glyph,
- face,
- load_flags,
- FALSE,
- vertical_layout);
- if (unlikely (status))
- goto FAIL;
-
- glyph = face->glyph;
- }
-
- if (glyph->format == FT_GLYPH_FORMAT_OUTLINE)
- status = _decompose_glyph_outline (face, &scaled_font->ft_options.base,
- &path);
- else
- status = CAIRO_INT_STATUS_UNSUPPORTED;
-
- if (unlikely (status))
- goto FAIL;
-
- _cairo_scaled_glyph_set_path (scaled_glyph,
- &scaled_font->base,
- path);
- }
- FAIL:
- _cairo_ft_unscaled_font_unlock_face (unscaled);
-
- return status;
-}
-
-static unsigned long
-_cairo_ft_ucs4_to_index (void *abstract_font,
- uint32_t ucs4)
-{
- cairo_ft_scaled_font_t *scaled_font = abstract_font;
- cairo_ft_unscaled_font_t *unscaled = scaled_font->unscaled;
- FT_Face face;
- FT_UInt index;
-
- face = _cairo_ft_unscaled_font_lock_face (unscaled);
- if (!face)
- return 0;
-
-#if CAIRO_HAS_FC_FONT
- index = FcFreeTypeCharIndex (face, ucs4);
-#else
- index = FT_Get_Char_Index (face, ucs4);
-#endif
-
- _cairo_ft_unscaled_font_unlock_face (unscaled);
- return index;
-}
-
-static cairo_int_status_t
-_cairo_ft_load_truetype_table (void *abstract_font,
- unsigned long tag,
- long offset,
- unsigned char *buffer,
- unsigned long *length)
-{
- cairo_ft_scaled_font_t *scaled_font = abstract_font;
- cairo_ft_unscaled_font_t *unscaled = scaled_font->unscaled;
- FT_Face face;
- cairo_status_t status = CAIRO_INT_STATUS_UNSUPPORTED;
-
- /* We don't support the FreeType feature of loading a table
- * without specifying the size since this may overflow our
- * buffer. */
- assert (length != NULL);
-
- if (_cairo_ft_scaled_font_is_vertical (&scaled_font->base))
- return CAIRO_INT_STATUS_UNSUPPORTED;
-
-#if HAVE_FT_LOAD_SFNT_TABLE
- face = _cairo_ft_unscaled_font_lock_face (unscaled);
- if (!face)
- return _cairo_error (CAIRO_STATUS_NO_MEMORY);
-
- if (FT_IS_SFNT (face)) {
- if (buffer == NULL)
- *length = 0;
-
- if (FT_Load_Sfnt_Table (face, tag, offset, buffer, length) == 0)
- status = CAIRO_STATUS_SUCCESS;
- }
-
- _cairo_ft_unscaled_font_unlock_face (unscaled);
-#endif
-
- return status;
-}
-
-static cairo_int_status_t
-_cairo_ft_index_to_ucs4(void *abstract_font,
- unsigned long index,
- uint32_t *ucs4)
-{
- cairo_ft_scaled_font_t *scaled_font = abstract_font;
- cairo_ft_unscaled_font_t *unscaled = scaled_font->unscaled;
- FT_Face face;
- FT_ULong charcode;
- FT_UInt gindex;
-
- face = _cairo_ft_unscaled_font_lock_face (unscaled);
- if (!face)
- return _cairo_error (CAIRO_STATUS_NO_MEMORY);
-
- *ucs4 = (uint32_t) -1;
- charcode = FT_Get_First_Char(face, &gindex);
- while (gindex != 0) {
- if (gindex == index) {
- *ucs4 = charcode;
- break;
- }
- charcode = FT_Get_Next_Char (face, charcode, &gindex);
- }
-
- _cairo_ft_unscaled_font_unlock_face (unscaled);
-
- return CAIRO_STATUS_SUCCESS;
-}
-
-static cairo_int_status_t
-_cairo_ft_is_synthetic (void *abstract_font,
- cairo_bool_t *is_synthetic)
-{
- cairo_int_status_t status = CAIRO_STATUS_SUCCESS;
- cairo_ft_scaled_font_t *scaled_font = abstract_font;
- cairo_ft_unscaled_font_t *unscaled = scaled_font->unscaled;
- FT_Face face;
- FT_Error error;
-
- if (scaled_font->ft_options.synth_flags != 0) {
- *is_synthetic = TRUE;
- return status;
- }
-
- *is_synthetic = FALSE;
- face = _cairo_ft_unscaled_font_lock_face (unscaled);
- if (!face)
- return _cairo_error (CAIRO_STATUS_NO_MEMORY);
-
- if (face->face_flags & FT_FACE_FLAG_MULTIPLE_MASTERS) {
- FT_MM_Var *mm_var = NULL;
- FT_Fixed *coords = NULL;
- int num_axis;
-
- /* If this is an MM or variable font we can't assume the current outlines
- * are the same as the font tables */
- *is_synthetic = TRUE;
-
- error = FT_Get_MM_Var (face, &mm_var);
- if (error) {
- status = _cairo_error (_ft_to_cairo_error (error));
- goto cleanup;
- }
-
- num_axis = mm_var->num_axis;
- coords = _cairo_malloc_ab (num_axis, sizeof(FT_Fixed));
- if (!coords) {
- status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
- goto cleanup;
- }
-
-#if FREETYPE_MAJOR > 2 || ( FREETYPE_MAJOR == 2 && FREETYPE_MINOR >= 8)
- /* If FT_Get_Var_Blend_Coordinates() is available, we can check if the
- * current design coordinates are the default coordinates. In this case
- * the current outlines match the font tables.
- */
- {
- int i;
-
- FT_Get_Var_Blend_Coordinates (face, num_axis, coords);
- *is_synthetic = FALSE;
- for (i = 0; i < num_axis; i++) {
- if (coords[i]) {
- *is_synthetic = TRUE;
- break;
- }
- }
- }
-#endif
-
- cleanup:
- free (coords);
-#if HAVE_FT_DONE_MM_VAR
- FT_Done_MM_Var (face->glyph->library, mm_var);
-#else
- free (mm_var);
-#endif
- }
-
- _cairo_ft_unscaled_font_unlock_face (unscaled);
-
- return status;
-}
-
-static cairo_int_status_t
-_cairo_index_to_glyph_name (void *abstract_font,
- char **glyph_names,
- int num_glyph_names,
- unsigned long glyph_index,
- unsigned long *glyph_array_index)
-{
- cairo_ft_scaled_font_t *scaled_font = abstract_font;
- cairo_ft_unscaled_font_t *unscaled = scaled_font->unscaled;
- FT_Face face;
- char buffer[256]; /* PLRM spcifies max name length of 127 */
- FT_Error error;
- int i;
-
- face = _cairo_ft_unscaled_font_lock_face (unscaled);
- if (!face)
- return _cairo_error (CAIRO_STATUS_NO_MEMORY);
-
- error = FT_Get_Glyph_Name (face, glyph_index, buffer, sizeof buffer);
-
- _cairo_ft_unscaled_font_unlock_face (unscaled);
-
- if (error != FT_Err_Ok) {
- /* propagate fatal errors from FreeType */
- if (error == FT_Err_Out_Of_Memory)
- return _cairo_error (CAIRO_STATUS_NO_MEMORY);
-
- return CAIRO_INT_STATUS_UNSUPPORTED;
- }
-
- /* FT first numbers the glyphs in the order they are read from the
- * Type 1 font. Then if .notdef is not the first glyph, the first
- * glyph is swapped with .notdef to ensure that .notdef is at
- * glyph index 0.
- *
- * As all but two glyphs in glyph_names already have the same
- * index as the FT glyph index, we first check if
- * glyph_names[glyph_index] is the name we are looking for. If not
- * we fall back to searching the entire array.
- */
-
- if ((long)glyph_index < num_glyph_names &&
- strcmp (glyph_names[glyph_index], buffer) == 0)
- {
- *glyph_array_index = glyph_index;
-
- return CAIRO_STATUS_SUCCESS;
- }
-
- for (i = 0; i < num_glyph_names; i++) {
- if (strcmp (glyph_names[i], buffer) == 0) {
- *glyph_array_index = i;
-
- return CAIRO_STATUS_SUCCESS;
- }
- }
-
- return CAIRO_INT_STATUS_UNSUPPORTED;
-}
-
-static cairo_bool_t
-_ft_is_type1 (FT_Face face)
-{
-#if HAVE_FT_GET_X11_FONT_FORMAT
- const char *font_format = FT_Get_X11_Font_Format (face);
- if (font_format &&
- (strcmp (font_format, "Type 1") == 0 ||
- strcmp (font_format, "CFF") == 0))
- {
- return TRUE;
- }
-#endif
-
- return FALSE;
-}
-
-static cairo_int_status_t
-_cairo_ft_load_type1_data (void *abstract_font,
- long offset,
- unsigned char *buffer,
- unsigned long *length)
-{
- cairo_ft_scaled_font_t *scaled_font = abstract_font;
- cairo_ft_unscaled_font_t *unscaled = scaled_font->unscaled;
- FT_Face face;
- cairo_status_t status = CAIRO_STATUS_SUCCESS;
- unsigned long available_length;
- unsigned long ret;
-
- assert (length != NULL);
-
- if (_cairo_ft_scaled_font_is_vertical (&scaled_font->base))
- return CAIRO_INT_STATUS_UNSUPPORTED;
-
- face = _cairo_ft_unscaled_font_lock_face (unscaled);
- if (!face)
- return _cairo_error (CAIRO_STATUS_NO_MEMORY);
-
-#if HAVE_FT_LOAD_SFNT_TABLE
- if (FT_IS_SFNT (face)) {
- status = CAIRO_INT_STATUS_UNSUPPORTED;
- goto unlock;
- }
-#endif
-
- if (! _ft_is_type1 (face)) {
- status = CAIRO_INT_STATUS_UNSUPPORTED;
- goto unlock;
- }
-
- available_length = MAX (face->stream->size - offset, 0);
- if (!buffer) {
- *length = available_length;
- } else {
- if (*length > available_length) {
- status = CAIRO_INT_STATUS_UNSUPPORTED;
- } else if (face->stream->read != NULL) {
- /* Note that read() may be implemented as a macro, thanks POSIX!, so we
- * need to wrap the following usage in parentheses in order to
- * disambiguate it for the pre-processor - using the verbose function
- * pointer dereference for clarity.
- */
- ret = (* face->stream->read) (face->stream,
- offset,
- buffer,
- *length);
- if (ret != *length)
- status = _cairo_error (CAIRO_STATUS_READ_ERROR);
- } else {
- memcpy (buffer, face->stream->base + offset, *length);
- }
- }
-
- unlock:
- _cairo_ft_unscaled_font_unlock_face (unscaled);
-
- return status;
-}
-
-static cairo_bool_t
-_cairo_ft_has_color_glyphs (void *scaled)
-{
- cairo_ft_unscaled_font_t *unscaled = ((cairo_ft_scaled_font_t *)scaled)->unscaled;
-
- if (!unscaled->have_color_set) {
- FT_Face face;
- face = _cairo_ft_unscaled_font_lock_face (unscaled);
- if (unlikely (face == NULL))
- return FALSE;
- _cairo_ft_unscaled_font_unlock_face (unscaled);
- }
-
- return unscaled->have_color;
-}
-
-static const cairo_scaled_font_backend_t _cairo_ft_scaled_font_backend = {
- CAIRO_FONT_TYPE_FT,
- _cairo_ft_scaled_font_fini,
- _cairo_ft_scaled_glyph_init,
- NULL, /* text_to_glyphs */
- _cairo_ft_ucs4_to_index,
- _cairo_ft_load_truetype_table,
- _cairo_ft_index_to_ucs4,
- _cairo_ft_is_synthetic,
- _cairo_index_to_glyph_name,
- _cairo_ft_load_type1_data,
- _cairo_ft_has_color_glyphs
-};
-
-/* #cairo_ft_font_face_t */
-
-#if CAIRO_HAS_FC_FONT
-static cairo_font_face_t *
-_cairo_ft_font_face_create_for_pattern (FcPattern *pattern);
-
-static cairo_status_t
-_cairo_ft_font_face_create_for_toy (cairo_toy_font_face_t *toy_face,
- cairo_font_face_t **font_face_out)
-{
- cairo_font_face_t *font_face = (cairo_font_face_t *) &_cairo_font_face_nil;
- FcPattern *pattern;
- int fcslant;
- int fcweight;
-
- pattern = FcPatternCreate ();
- if (!pattern) {
- _cairo_error_throw (CAIRO_STATUS_NO_MEMORY);
- return font_face->status;
- }
-
- if (!FcPatternAddString (pattern,
- FC_FAMILY, (unsigned char *) toy_face->family))
- {
- _cairo_error_throw (CAIRO_STATUS_NO_MEMORY);
- goto FREE_PATTERN;
- }
-
- switch (toy_face->slant)
- {
- case CAIRO_FONT_SLANT_ITALIC:
- fcslant = FC_SLANT_ITALIC;
- break;
- case CAIRO_FONT_SLANT_OBLIQUE:
- fcslant = FC_SLANT_OBLIQUE;
- break;
- case CAIRO_FONT_SLANT_NORMAL:
- default:
- fcslant = FC_SLANT_ROMAN;
- break;
- }
-
- if (!FcPatternAddInteger (pattern, FC_SLANT, fcslant)) {
- _cairo_error_throw (CAIRO_STATUS_NO_MEMORY);
- goto FREE_PATTERN;
- }
-
- switch (toy_face->weight)
- {
- case CAIRO_FONT_WEIGHT_BOLD:
- fcweight = FC_WEIGHT_BOLD;
- break;
- case CAIRO_FONT_WEIGHT_NORMAL:
- default:
- fcweight = FC_WEIGHT_MEDIUM;
- break;
- }
-
- if (!FcPatternAddInteger (pattern, FC_WEIGHT, fcweight)) {
- _cairo_error_throw (CAIRO_STATUS_NO_MEMORY);
- goto FREE_PATTERN;
- }
-
- font_face = _cairo_ft_font_face_create_for_pattern (pattern);
-
- FREE_PATTERN:
- FcPatternDestroy (pattern);
-
- *font_face_out = font_face;
- return font_face->status;
-}
-#endif
-
-static cairo_bool_t
-_cairo_ft_font_face_destroy (void *abstract_face)
-{
- cairo_ft_font_face_t *font_face = abstract_face;
-
- /* When destroying a face created by cairo_ft_font_face_create_for_ft_face,
- * we have a special "zombie" state for the face when the unscaled font
- * is still alive but there are no other references to a font face with
- * the same FT_Face.
- *
- * We go from:
- *
- * font_face ------> unscaled
- * <-....weak....../
- *
- * To:
- *
- * font_face <------- unscaled
- */
-
- if (font_face->unscaled &&
- font_face->unscaled->from_face &&
- font_face->next == NULL &&
- font_face->unscaled->faces == font_face &&
- CAIRO_REFERENCE_COUNT_GET_VALUE (&font_face->unscaled->base.ref_count) > 1)
- {
- _cairo_unscaled_font_destroy (&font_face->unscaled->base);
- font_face->unscaled = NULL;
-
- return FALSE;
- }
-
- if (font_face->unscaled) {
- cairo_ft_font_face_t *tmp_face = NULL;
- cairo_ft_font_face_t *last_face = NULL;
-
- /* Remove face from linked list */
- for (tmp_face = font_face->unscaled->faces;
- tmp_face;
- tmp_face = tmp_face->next)
- {
- if (tmp_face == font_face) {
- if (last_face)
- last_face->next = tmp_face->next;
- else
- font_face->unscaled->faces = tmp_face->next;
- }
-
- last_face = tmp_face;
- }
-
- _cairo_unscaled_font_destroy (&font_face->unscaled->base);
- font_face->unscaled = NULL;
- }
-
- _cairo_ft_options_fini (&font_face->ft_options);
-
-#if CAIRO_HAS_FC_FONT
- if (font_face->pattern) {
- FcPatternDestroy (font_face->pattern);
- cairo_font_face_destroy (font_face->resolved_font_face);
- }
-#endif
-
- return TRUE;
-}
-
-static cairo_font_face_t *
-_cairo_ft_font_face_get_implementation (void *abstract_face,
- const cairo_matrix_t *font_matrix,
- const cairo_matrix_t *ctm,
- const cairo_font_options_t *options)
-{
- cairo_ft_font_face_t *font_face = abstract_face;
-
- /* The handling of font options is different depending on how the
- * font face was created. When the user creates a font face with
- * cairo_ft_font_face_create_for_ft_face(), then the load flags
- * passed in augment the load flags for the options. But for
- * cairo_ft_font_face_create_for_pattern(), the load flags are
- * derived from a pattern where the user has called
- * cairo_ft_font_options_substitute(), so *just* use those load
- * flags and ignore the options.
- */
-
-#if CAIRO_HAS_FC_FONT
- /* If we have an unresolved pattern, resolve it and create
- * unscaled font. Otherwise, use the ones stored in font_face.
- */
- if (font_face->pattern) {
- cairo_font_face_t *resolved;
-
- /* Cache the resolved font whilst the FcConfig remains consistent. */
- resolved = font_face->resolved_font_face;
- if (resolved != NULL) {
- if (! FcInitBringUptoDate ()) {
- _cairo_error_throw (CAIRO_STATUS_NO_MEMORY);
- return (cairo_font_face_t *) &_cairo_font_face_nil;
- }
-
- if (font_face->resolved_config == FcConfigGetCurrent ())
- return cairo_font_face_reference (resolved);
-
- cairo_font_face_destroy (resolved);
- font_face->resolved_font_face = NULL;
- }
-
- resolved = _cairo_ft_resolve_pattern (font_face->pattern,
- font_matrix,
- ctm,
- options);
- if (unlikely (resolved->status))
- return resolved;
-
- font_face->resolved_font_face = cairo_font_face_reference (resolved);
- font_face->resolved_config = FcConfigGetCurrent ();
-
- return resolved;
- }
-#endif
-
- return abstract_face;
-}
-
-const cairo_font_face_backend_t _cairo_ft_font_face_backend = {
- CAIRO_FONT_TYPE_FT,
-#if CAIRO_HAS_FC_FONT
- _cairo_ft_font_face_create_for_toy,
-#else
- NULL,
-#endif
- _cairo_ft_font_face_destroy,
- _cairo_ft_font_face_scaled_font_create,
- _cairo_ft_font_face_get_implementation
-};
-
-#if CAIRO_HAS_FC_FONT
-static cairo_font_face_t *
-_cairo_ft_font_face_create_for_pattern (FcPattern *pattern)
-{
- cairo_ft_font_face_t *font_face;
-
- font_face = _cairo_malloc (sizeof (cairo_ft_font_face_t));
- if (unlikely (font_face == NULL)) {
- _cairo_error_throw (CAIRO_STATUS_NO_MEMORY);
- return (cairo_font_face_t *) &_cairo_font_face_nil;
- }
-
- font_face->unscaled = NULL;
-
- _get_pattern_ft_options (pattern, &font_face->ft_options);
-
- font_face->next = NULL;
-
- font_face->pattern = FcPatternDuplicate (pattern);
- if (unlikely (font_face->pattern == NULL)) {
- free (font_face);
- _cairo_error_throw (CAIRO_STATUS_NO_MEMORY);
- return (cairo_font_face_t *) &_cairo_font_face_nil;
- }
-
- font_face->resolved_font_face = NULL;
- font_face->resolved_config = NULL;
-
- _cairo_font_face_init (&font_face->base, &_cairo_ft_font_face_backend);
-
- return &font_face->base;
-}
-#endif
-
-static cairo_font_face_t *
-_cairo_ft_font_face_create (cairo_ft_unscaled_font_t *unscaled,
- cairo_ft_options_t *ft_options)
-{
- cairo_ft_font_face_t *font_face, **prev_font_face;
-
- /* Looked for an existing matching font face */
- for (font_face = unscaled->faces, prev_font_face = &unscaled->faces;
- font_face;
- prev_font_face = &font_face->next, font_face = font_face->next)
- {
- if (font_face->ft_options.load_flags == ft_options->load_flags &&
- font_face->ft_options.synth_flags == ft_options->synth_flags &&
- cairo_font_options_equal (&font_face->ft_options.base, &ft_options->base))
- {
- if (font_face->base.status) {
- /* The font_face has been left in an error state, abandon it. */
- *prev_font_face = font_face->next;
- break;
- }
-
- if (font_face->unscaled == NULL) {
- /* Resurrect this "zombie" font_face (from
- * _cairo_ft_font_face_destroy), switching its unscaled_font
- * from owner to ownee. */
- font_face->unscaled = unscaled;
- _cairo_unscaled_font_reference (&unscaled->base);
- return &font_face->base;
- } else
- return cairo_font_face_reference (&font_face->base);
- }
- }
-
- /* No match found, create a new one */
- font_face = _cairo_malloc (sizeof (cairo_ft_font_face_t));
- if (unlikely (!font_face)) {
- _cairo_error_throw (CAIRO_STATUS_NO_MEMORY);
- return (cairo_font_face_t *)&_cairo_font_face_nil;
- }
-
- font_face->unscaled = unscaled;
- _cairo_unscaled_font_reference (&unscaled->base);
-
- _cairo_ft_options_init_copy (&font_face->ft_options, ft_options);
-
- if (unscaled->faces && unscaled->faces->unscaled == NULL) {
- /* This "zombie" font_face (from _cairo_ft_font_face_destroy)
- * is no longer needed. */
- assert (unscaled->from_face && unscaled->faces->next == NULL);
- cairo_font_face_destroy (&unscaled->faces->base);
- unscaled->faces = NULL;
- }
-
- font_face->next = unscaled->faces;
- unscaled->faces = font_face;
-
-#if CAIRO_HAS_FC_FONT
- font_face->pattern = NULL;
-#endif
-
- _cairo_font_face_init (&font_face->base, &_cairo_ft_font_face_backend);
-
- return &font_face->base;
-}
-
-/* implement the platform-specific interface */
-
-#if CAIRO_HAS_FC_FONT
-static cairo_status_t
-_cairo_ft_font_options_substitute (const cairo_font_options_t *options,
- FcPattern *pattern)
-{
- FcValue v;
-
- if (options->antialias != CAIRO_ANTIALIAS_DEFAULT)
- {
- if (FcPatternGet (pattern, FC_ANTIALIAS, 0, &v) == FcResultNoMatch)
- {
- if (! FcPatternAddBool (pattern,
- FC_ANTIALIAS,
- options->antialias != CAIRO_ANTIALIAS_NONE))
- return _cairo_error (CAIRO_STATUS_NO_MEMORY);
-
- if (options->antialias != CAIRO_ANTIALIAS_SUBPIXEL) {
- FcPatternDel (pattern, FC_RGBA);
- if (! FcPatternAddInteger (pattern, FC_RGBA, FC_RGBA_NONE))
- return _cairo_error (CAIRO_STATUS_NO_MEMORY);
- }
- }
- }
-
- if (options->antialias != CAIRO_ANTIALIAS_DEFAULT)
- {
- if (FcPatternGet (pattern, FC_RGBA, 0, &v) == FcResultNoMatch)
- {
- int rgba;
-
- if (options->antialias == CAIRO_ANTIALIAS_SUBPIXEL) {
- switch (options->subpixel_order) {
- case CAIRO_SUBPIXEL_ORDER_DEFAULT:
- case CAIRO_SUBPIXEL_ORDER_RGB:
- default:
- rgba = FC_RGBA_RGB;
- break;
- case CAIRO_SUBPIXEL_ORDER_BGR:
- rgba = FC_RGBA_BGR;
- break;
- case CAIRO_SUBPIXEL_ORDER_VRGB:
- rgba = FC_RGBA_VRGB;
- break;
- case CAIRO_SUBPIXEL_ORDER_VBGR:
- rgba = FC_RGBA_VBGR;
- break;
- }
- } else {
- rgba = FC_RGBA_NONE;
- }
-
- if (! FcPatternAddInteger (pattern, FC_RGBA, rgba))
- return _cairo_error (CAIRO_STATUS_NO_MEMORY);
- }
- }
-
- if (options->lcd_filter != CAIRO_LCD_FILTER_DEFAULT)
- {
- if (FcPatternGet (pattern, FC_LCD_FILTER, 0, &v) == FcResultNoMatch)
- {
- int lcd_filter;
-
- switch (options->lcd_filter) {
- case CAIRO_LCD_FILTER_NONE:
- lcd_filter = FT_LCD_FILTER_NONE;
- break;
- case CAIRO_LCD_FILTER_DEFAULT:
- case CAIRO_LCD_FILTER_INTRA_PIXEL:
- lcd_filter = FT_LCD_FILTER_LEGACY;
- break;
- case CAIRO_LCD_FILTER_FIR3:
- lcd_filter = FT_LCD_FILTER_LIGHT;
- break;
- default:
- case CAIRO_LCD_FILTER_FIR5:
- lcd_filter = FT_LCD_FILTER_DEFAULT;
- break;
- }
-
- if (! FcPatternAddInteger (pattern, FC_LCD_FILTER, lcd_filter))
- return _cairo_error (CAIRO_STATUS_NO_MEMORY);
- }
- }
-
- if (options->hint_style != CAIRO_HINT_STYLE_DEFAULT)
- {
- if (FcPatternGet (pattern, FC_HINTING, 0, &v) == FcResultNoMatch)
- {
- if (! FcPatternAddBool (pattern,
- FC_HINTING,
- options->hint_style != CAIRO_HINT_STYLE_NONE))
- return _cairo_error (CAIRO_STATUS_NO_MEMORY);
- }
-
-#ifdef FC_HINT_STYLE
- if (FcPatternGet (pattern, FC_HINT_STYLE, 0, &v) == FcResultNoMatch)
- {
- int hint_style;
-
- switch (options->hint_style) {
- case CAIRO_HINT_STYLE_NONE:
- hint_style = FC_HINT_NONE;
- break;
- case CAIRO_HINT_STYLE_SLIGHT:
- hint_style = FC_HINT_SLIGHT;
- break;
- case CAIRO_HINT_STYLE_MEDIUM:
- hint_style = FC_HINT_MEDIUM;
- break;
- case CAIRO_HINT_STYLE_FULL:
- case CAIRO_HINT_STYLE_DEFAULT:
- default:
- hint_style = FC_HINT_FULL;
- break;
- }
-
- if (! FcPatternAddInteger (pattern, FC_HINT_STYLE, hint_style))
- return _cairo_error (CAIRO_STATUS_NO_MEMORY);
- }
-#endif
- }
-
- return CAIRO_STATUS_SUCCESS;
-}
-
-/**
- * cairo_ft_font_options_substitute:
- * @options: a #cairo_font_options_t object
- * @pattern: an existing #FcPattern
- *
- * Add options to a #FcPattern based on a #cairo_font_options_t font
- * options object. Options that are already in the pattern, are not overridden,
- * so you should call this function after calling FcConfigSubstitute() (the
- * user's settings should override options based on the surface type), but
- * before calling FcDefaultSubstitute().
- *
- * Since: 1.0
- **/
-void
-cairo_ft_font_options_substitute (const cairo_font_options_t *options,
- FcPattern *pattern)
-{
- if (cairo_font_options_status ((cairo_font_options_t *) options))
- return;
-
- _cairo_ft_font_options_substitute (options, pattern);
-}
-
-static cairo_font_face_t *
-_cairo_ft_resolve_pattern (FcPattern *pattern,
- const cairo_matrix_t *font_matrix,
- const cairo_matrix_t *ctm,
- const cairo_font_options_t *font_options)
-{
- cairo_status_t status;
-
- cairo_matrix_t scale;
- FcPattern *resolved;
- cairo_ft_font_transform_t sf;
- FcResult result;
- cairo_ft_unscaled_font_t *unscaled;
- cairo_ft_options_t ft_options;
- cairo_font_face_t *font_face;
-
- scale = *ctm;
- scale.x0 = scale.y0 = 0;
- cairo_matrix_multiply (&scale,
- font_matrix,
- &scale);
-
- status = _compute_transform (&sf, &scale, NULL);
- if (unlikely (status))
- return (cairo_font_face_t *)&_cairo_font_face_nil;
-
- pattern = FcPatternDuplicate (pattern);
- if (pattern == NULL)
- return (cairo_font_face_t *)&_cairo_font_face_nil;
-
- if (! FcPatternAddDouble (pattern, FC_PIXEL_SIZE, sf.y_scale)) {
- font_face = (cairo_font_face_t *)&_cairo_font_face_nil;
- goto FREE_PATTERN;
- }
-
- if (! FcConfigSubstitute (NULL, pattern, FcMatchPattern)) {
- font_face = (cairo_font_face_t *)&_cairo_font_face_nil;
- goto FREE_PATTERN;
- }
-
- status = _cairo_ft_font_options_substitute (font_options, pattern);
- if (status) {
- font_face = (cairo_font_face_t *)&_cairo_font_face_nil;
- goto FREE_PATTERN;
- }
-
- FcDefaultSubstitute (pattern);
-
- status = _cairo_ft_unscaled_font_create_for_pattern (pattern, &unscaled);
- if (unlikely (status)) {
- font_face = (cairo_font_face_t *)&_cairo_font_face_nil;
- goto FREE_PATTERN;
- }
-
- if (unscaled == NULL) {
- resolved = FcFontMatch (NULL, pattern, &result);
- if (!resolved) {
- /* We failed to find any font. Substitute twin so that the user can
- * see something (and hopefully recognise that the font is missing)
- * and not just receive a NO_MEMORY error during rendering.
- */
- font_face = _cairo_font_face_twin_create_fallback ();
- goto FREE_PATTERN;
- }
-
- status = _cairo_ft_unscaled_font_create_for_pattern (resolved, &unscaled);
- if (unlikely (status || unscaled == NULL)) {
- font_face = (cairo_font_face_t *)&_cairo_font_face_nil;
- goto FREE_RESOLVED;
- }
- } else
- resolved = pattern;
-
- _get_pattern_ft_options (resolved, &ft_options);
- font_face = _cairo_ft_font_face_create (unscaled, &ft_options);
- _cairo_ft_options_fini (&ft_options);
- _cairo_unscaled_font_destroy (&unscaled->base);
-
-FREE_RESOLVED:
- if (resolved != pattern)
- FcPatternDestroy (resolved);
-
-FREE_PATTERN:
- FcPatternDestroy (pattern);
-
- return font_face;
-}
-
-/**
- * cairo_ft_font_face_create_for_pattern:
- * @pattern: A fontconfig pattern. Cairo makes a copy of the pattern
- * if it needs to. You are free to modify or free @pattern after this call.
- *
- * Creates a new font face for the FreeType font backend based on a
- * fontconfig pattern. This font can then be used with
- * cairo_set_font_face() or cairo_scaled_font_create(). The
- * #cairo_scaled_font_t returned from cairo_scaled_font_create() is
- * also for the FreeType backend and can be used with functions such
- * as cairo_ft_scaled_font_lock_face().
- *
- * Font rendering options are represented both here and when you
- * call cairo_scaled_font_create(). Font options that have a representation
- * in a #FcPattern must be passed in here; to modify #FcPattern
- * appropriately to reflect the options in a #cairo_font_options_t, call
- * cairo_ft_font_options_substitute().
- *
- * The pattern's FC_FT_FACE element is inspected first and if that is set,
- * that will be the FreeType font face associated with the returned cairo
- * font face. Otherwise the FC_FILE element is checked. If it's set,
- * that and the value of the FC_INDEX element (defaults to zero) of @pattern
- * are used to load a font face from file.
- *
- * If both steps from the previous paragraph fails, @pattern will be passed
- * to FcConfigSubstitute, FcDefaultSubstitute, and finally FcFontMatch,
- * and the resulting font pattern is used.
- *
- * If the FC_FT_FACE element of @pattern is set, the user is responsible
- * for making sure that the referenced FT_Face remains valid for the life
- * time of the returned #cairo_font_face_t. See
- * cairo_ft_font_face_create_for_ft_face() for an example of how to couple
- * the life time of the FT_Face to that of the cairo font-face.
- *
- * Return value: a newly created #cairo_font_face_t. Free with
- * cairo_font_face_destroy() when you are done using it.
- *
- * Since: 1.0
- **/
-cairo_font_face_t *
-cairo_ft_font_face_create_for_pattern (FcPattern *pattern)
-{
- cairo_ft_unscaled_font_t *unscaled;
- cairo_font_face_t *font_face;
- cairo_ft_options_t ft_options;
- cairo_status_t status;
-
- status = _cairo_ft_unscaled_font_create_for_pattern (pattern, &unscaled);
- if (unlikely (status)) {
- if (status == CAIRO_STATUS_FILE_NOT_FOUND)
- return (cairo_font_face_t *) &_cairo_font_face_nil_file_not_found;
- else
- return (cairo_font_face_t *) &_cairo_font_face_nil;
- }
- if (unlikely (unscaled == NULL)) {
- /* Store the pattern. We will resolve it and create unscaled
- * font when creating scaled fonts */
- return _cairo_ft_font_face_create_for_pattern (pattern);
- }
-
- _get_pattern_ft_options (pattern, &ft_options);
- font_face = _cairo_ft_font_face_create (unscaled, &ft_options);
- _cairo_ft_options_fini (&ft_options);
- _cairo_unscaled_font_destroy (&unscaled->base);
-
- return font_face;
-}
-#endif
-
-/**
- * cairo_ft_font_face_create_for_ft_face:
- * @face: A FreeType face object, already opened. This must
- * be kept around until the face's ref_count drops to
- * zero and it is freed. Since the face may be referenced
- * internally to Cairo, the best way to determine when it
- * is safe to free the face is to pass a
- * #cairo_destroy_func_t to cairo_font_face_set_user_data()
- * @load_flags: flags to pass to FT_Load_Glyph when loading
- * glyphs from the font. These flags are OR'ed together with
- * the flags derived from the #cairo_font_options_t passed
- * to cairo_scaled_font_create(), so only a few values such
- * as %FT_LOAD_VERTICAL_LAYOUT, and %FT_LOAD_FORCE_AUTOHINT
- * are useful. You should not pass any of the flags affecting
- * the load target, such as %FT_LOAD_TARGET_LIGHT.
- *
- * Creates a new font face for the FreeType font backend from a
- * pre-opened FreeType face. This font can then be used with
- * cairo_set_font_face() or cairo_scaled_font_create(). The
- * #cairo_scaled_font_t returned from cairo_scaled_font_create() is
- * also for the FreeType backend and can be used with functions such
- * as cairo_ft_scaled_font_lock_face(). Note that Cairo may keep a reference
- * to the FT_Face alive in a font-cache and the exact lifetime of the reference
- * depends highly upon the exact usage pattern and is subject to external
- * factors. You must not call FT_Done_Face() before the last reference to the
- * #cairo_font_face_t has been dropped.
- *
- * As an example, below is how one might correctly couple the lifetime of
- * the FreeType face object to the #cairo_font_face_t.
- *
- * <informalexample><programlisting>
- * static const cairo_user_data_key_t key;
- *
- * font_face = cairo_ft_font_face_create_for_ft_face (ft_face, 0);
- * status = cairo_font_face_set_user_data (font_face, &key,
- * ft_face, (cairo_destroy_func_t) FT_Done_Face);
- * if (status) {
- * cairo_font_face_destroy (font_face);
- * FT_Done_Face (ft_face);
- * return ERROR;
- * }
- * </programlisting></informalexample>
- *
- * Return value: a newly created #cairo_font_face_t. Free with
- * cairo_font_face_destroy() when you are done using it.
- *
- * Since: 1.0
- **/
-cairo_font_face_t *
-cairo_ft_font_face_create_for_ft_face (FT_Face face,
- int load_flags)
-{
- cairo_ft_unscaled_font_t *unscaled;
- cairo_font_face_t *font_face;
- cairo_ft_options_t ft_options;
- cairo_status_t status;
-
- status = _cairo_ft_unscaled_font_create_from_face (face, &unscaled);
- if (unlikely (status))
- return (cairo_font_face_t *)&_cairo_font_face_nil;
-
- ft_options.load_flags = load_flags;
- ft_options.synth_flags = 0;
- _cairo_font_options_init_default (&ft_options.base);
-
- font_face = _cairo_ft_font_face_create (unscaled, &ft_options);
- _cairo_unscaled_font_destroy (&unscaled->base);
-
- return font_face;
-}
-
-/**
- * cairo_ft_font_face_set_synthesize:
- * @font_face: The #cairo_ft_font_face_t object to modify
- * @synth_flags: the set of synthesis options to enable
- *
- * FreeType provides the ability to synthesize different glyphs from a base
- * font, which is useful if you lack those glyphs from a true bold or oblique
- * font. See also #cairo_ft_synthesize_t.
- *
- * Since: 1.12
- **/
-void
-cairo_ft_font_face_set_synthesize (cairo_font_face_t *font_face,
- unsigned int synth_flags)
-{
- cairo_ft_font_face_t *ft;
-
- if (font_face->backend->type != CAIRO_FONT_TYPE_FT)
- return;
-
- ft = (cairo_ft_font_face_t *) font_face;
- ft->ft_options.synth_flags |= synth_flags;
-}
-
-/**
- * cairo_ft_font_face_unset_synthesize:
- * @font_face: The #cairo_ft_font_face_t object to modify
- * @synth_flags: the set of synthesis options to disable
- *
- * See cairo_ft_font_face_set_synthesize().
- *
- * Since: 1.12
- **/
-void
-cairo_ft_font_face_unset_synthesize (cairo_font_face_t *font_face,
- unsigned int synth_flags)
-{
- cairo_ft_font_face_t *ft;
-
- if (font_face->backend->type != CAIRO_FONT_TYPE_FT)
- return;
-
- ft = (cairo_ft_font_face_t *) font_face;
- ft->ft_options.synth_flags &= ~synth_flags;
-}
-
-/**
- * cairo_ft_font_face_get_synthesize:
- * @font_face: The #cairo_ft_font_face_t object to query
- *
- * See #cairo_ft_synthesize_t.
- *
- * Returns: the current set of synthesis options.
- *
- * Since: 1.12
- **/
-unsigned int
-cairo_ft_font_face_get_synthesize (cairo_font_face_t *font_face)
-{
- cairo_ft_font_face_t *ft;
-
- if (font_face->backend->type != CAIRO_FONT_TYPE_FT)
- return 0;
-
- ft = (cairo_ft_font_face_t *) font_face;
- return ft->ft_options.synth_flags;
-}
-
-/**
- * cairo_ft_scaled_font_lock_face:
- * @scaled_font: A #cairo_scaled_font_t from the FreeType font backend. Such an
- * object can be created by calling cairo_scaled_font_create() on a
- * FreeType backend font face (see cairo_ft_font_face_create_for_pattern(),
- * cairo_ft_font_face_create_for_ft_face()).
- *
- * cairo_ft_scaled_font_lock_face() gets the #FT_Face object from a FreeType
- * backend font and scales it appropriately for the font and applies OpenType
- * font variations if applicable. You must
- * release the face with cairo_ft_scaled_font_unlock_face()
- * when you are done using it. Since the #FT_Face object can be
- * shared between multiple #cairo_scaled_font_t objects, you must not
- * lock any other font objects until you unlock this one. A count is
- * kept of the number of times cairo_ft_scaled_font_lock_face() is
- * called. cairo_ft_scaled_font_unlock_face() must be called the same number
- * of times.
- *
- * You must be careful when using this function in a library or in a
- * threaded application, because freetype's design makes it unsafe to
- * call freetype functions simultaneously from multiple threads, (even
- * if using distinct FT_Face objects). Because of this, application
- * code that acquires an FT_Face object with this call must add its
- * own locking to protect any use of that object, (and which also must
- * protect any other calls into cairo as almost any cairo function
- * might result in a call into the freetype library).
- *
- * Return value: The #FT_Face object for @font, scaled appropriately,
- * or %NULL if @scaled_font is in an error state (see
- * cairo_scaled_font_status()) or there is insufficient memory.
- *
- * Since: 1.0
- **/
-FT_Face
-cairo_ft_scaled_font_lock_face (cairo_scaled_font_t *abstract_font)
-{
- cairo_ft_scaled_font_t *scaled_font = (cairo_ft_scaled_font_t *) abstract_font;
- FT_Face face;
- cairo_status_t status;
-
- if (! _cairo_scaled_font_is_ft (abstract_font)) {
- _cairo_error_throw (CAIRO_STATUS_FONT_TYPE_MISMATCH);
- return NULL;
- }
-
- if (scaled_font->base.status)
- return NULL;
-
- face = _cairo_ft_unscaled_font_lock_face (scaled_font->unscaled);
- if (unlikely (face == NULL)) {
- status = _cairo_scaled_font_set_error (&scaled_font->base, CAIRO_STATUS_NO_MEMORY);
- return NULL;
- }
-
- status = _cairo_ft_unscaled_font_set_scale (scaled_font->unscaled,
- &scaled_font->base.scale);
- if (unlikely (status)) {
- _cairo_ft_unscaled_font_unlock_face (scaled_font->unscaled);
- status = _cairo_scaled_font_set_error (&scaled_font->base, status);
- return NULL;
- }
-
- cairo_ft_apply_variations (face, scaled_font);
-
- /* Note: We deliberately release the unscaled font's mutex here,
- * so that we are not holding a lock across two separate calls to
- * cairo function, (which would give the application some
- * opportunity for creating deadlock. This is obviously unsafe,
- * but as documented, the user must add manual locking when using
- * this function. */
- CAIRO_MUTEX_UNLOCK (scaled_font->unscaled->mutex);
-
- return face;
-}
-
-/**
- * cairo_ft_scaled_font_unlock_face:
- * @scaled_font: A #cairo_scaled_font_t from the FreeType font backend. Such an
- * object can be created by calling cairo_scaled_font_create() on a
- * FreeType backend font face (see cairo_ft_font_face_create_for_pattern(),
- * cairo_ft_font_face_create_for_ft_face()).
- *
- * Releases a face obtained with cairo_ft_scaled_font_lock_face().
- *
- * Since: 1.0
- **/
-void
-cairo_ft_scaled_font_unlock_face (cairo_scaled_font_t *abstract_font)
-{
- cairo_ft_scaled_font_t *scaled_font = (cairo_ft_scaled_font_t *) abstract_font;
-
- if (! _cairo_scaled_font_is_ft (abstract_font)) {
- _cairo_error_throw (CAIRO_STATUS_FONT_TYPE_MISMATCH);
- return;
- }
-
- if (scaled_font->base.status)
- return;
-
- /* Note: We released the unscaled font's mutex at the end of
- * cairo_ft_scaled_font_lock_face, so we have to acquire it again
- * as _cairo_ft_unscaled_font_unlock_face expects it to be held
- * when we call into it. */
- CAIRO_MUTEX_LOCK (scaled_font->unscaled->mutex);
-
- _cairo_ft_unscaled_font_unlock_face (scaled_font->unscaled);
-}
-
-static cairo_bool_t
-_cairo_ft_scaled_font_is_vertical (cairo_scaled_font_t *scaled_font)
-{
- cairo_ft_scaled_font_t *ft_scaled_font;
-
- if (!_cairo_scaled_font_is_ft (scaled_font))
- return FALSE;
-
- ft_scaled_font = (cairo_ft_scaled_font_t *) scaled_font;
- if (ft_scaled_font->ft_options.load_flags & FT_LOAD_VERTICAL_LAYOUT)
- return TRUE;
- return FALSE;
-}
-
-unsigned int
-_cairo_ft_scaled_font_get_load_flags (cairo_scaled_font_t *scaled_font)
-{
- cairo_ft_scaled_font_t *ft_scaled_font;
-
- if (! _cairo_scaled_font_is_ft (scaled_font))
- return 0;
-
- ft_scaled_font = (cairo_ft_scaled_font_t *) scaled_font;
- return ft_scaled_font->ft_options.load_flags;
-}
-
-void
-_cairo_ft_font_reset_static_data (void)
-{
- _cairo_ft_unscaled_font_map_destroy ();
-}