/home/sylvestre/dev/mozilla/ff/firefox.hg/gfx/cairo/cairo/src/cairo-ft-font.c

Bug Summary

File:	gfx/cairo/cairo/src/cairo-ft-font.c
Location:	line 602, column 31
Description:	Access to field 'hash_table' results in a dereference of a null pointer (loaded from variable 'font_map')

Annotated Source Code

/* -*- Mode: c; c-basic-offset: 4; indent-tabs-mode: t; tab-width: 8; -*- */

/* cairo - a vector graphics library with display and print output

* 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 _BSD_SOURCE1 /* for strdup() */

#include "cairoint.h"

#include "cairo-error-private.h"

#include "cairo-ft-private.h"

#include <float.h>

#include "cairo-fontconfig-private.h"

#include <ft2build.h>

#include FT_FREETYPE_H<freetype.h>

#include FT_OUTLINE_H<ftoutln.h>

#include FT_IMAGE_H<ftimage.h>

#include FT_TRUETYPE_TABLES_H<tttables.h>

#if HAVE_FT_GLYPHSLOT_EMBOLDEN1

#include FT_SYNTHESIS_H<ftsynth.h>

#endif

#if HAVE_FT_LIBRARY_SETLCDFILTER

#include FT_LCD_FILTER_H<ftlcdfil.h>

#endif

#define _GNU_SOURCE /* for RTLD_DEFAULT */

#include <dlfcn.h>

#ifndef RTLD_DEFAULT((void *) 0)

#define RTLD_DEFAULT((void *) 0) ((void *) 0)

#endif

/* Fontconfig version older than 2.6 didn't have these options */

#ifndef FC_LCD_FILTER"lcdfilter"

#define FC_LCD_FILTER"lcdfilter" "lcdfilter"

#endif

/* Some Ubuntu versions defined FC_LCD_FILTER without defining the following */

#ifndef FC_LCD_NONE0

#define FC_LCD_NONE0 0

#define FC_LCD_DEFAULT1 1

#define FC_LCD_LIGHT2 2

#define FC_LCD_LEGACY3 3

#endif

/* FreeType version older than 2.3.5(?) didn't have these options */

#ifndef FT_LCD_FILTER_NONE0

#define FT_LCD_FILTER_NONE0 0

#define FT_LCD_FILTER_DEFAULT1 1

#define FT_LCD_FILTER_LIGHT2 2

#define FT_LCD_FILTER_LEGACY16 16

#endif

typedef FT_Error (*setLcdFilterFunc)(FT_Library, int);

static setLcdFilterFunc setLcdFilter;

#define DOUBLE_TO_26_6(d)((FT_F26Dot6)((d) * 64.0)) ((FT_F26Dot6)((d) * 64.0))

#define DOUBLE_FROM_26_6(t)((double)(t) / 64.0) ((double)(t) / 64.0)

#define DOUBLE_TO_16_16(d)((FT_Fixed)((d) * 65536.0)) ((FT_Fixed)((d) * 65536.0))

#define DOUBLE_FROM_16_16(t)((double)(t) / 65536.0) ((double)(t) / 65536.0)

/* This is the max number of FT_face objects we keep open at once

100

101

#define MAX_OPEN_FACES10 10

102

/* This is the maximum font size we allow to be passed to FT_Set_Char_Size

103

104

#define MAX_FONT_SIZE1000 1000

105

106

/**

107

* SECTION:cairo-ft

108

* @Title: FreeType Fonts

109

* @Short_Description: Font support for FreeType

110

* @See_Also: #cairo_font_face_t

111

112

* The FreeType font backend is primarily used to render text on GNU/Linux

113

* systems, but can be used on other platforms too.

114

115

116

/**

117

* CAIRO_HAS_FT_FONT:

118

119

* Defined if the FreeType font backend is available.

120

* This macro can be used to conditionally compile backend-specific code.

121

122

123

/**

124

* CAIRO_HAS_FC_FONT:

125

126

* Defined if the Fontconfig-specific functions of the FreeType font backend

127

* are available.

128

* This macro can be used to conditionally compile backend-specific code.

129

130

131

132

* The simple 2x2 matrix is converted into separate scale and shape

133

* factors so that hinting works right

134

135

136

typedef struct _cairo_ft_font_transform {

137

double x_scale, y_scale;

138

double shape[2][2];

139

} cairo_ft_font_transform_t;

140

141

142

* We create an object that corresponds to a single font on the disk;

143

* (identified by a filename/id pair) these are shared between all

144

* fonts using that file. For cairo_ft_font_face_create_for_ft_face(), we

145

* just create a one-off version with a permanent face value.

146

147

148

typedef struct _cairo_ft_font_face cairo_ft_font_face_t;

149

150

struct _cairo_ft_unscaled_font {

151

cairo_unscaled_font_t base;

152

153

cairo_bool_t from_face; /* was the FT_Face provided by user? */

154

FT_Face face; /* provided or cached face */

155

156

/* only set if from_face is false */

157

char *filename;

158

int id;

159

160

/* We temporarily scale the unscaled font as needed */

161

cairo_bool_t have_scale;

162

cairo_matrix_t current_scale;

163

double x_scale; /* Extracted X scale factor */

164

double y_scale; /* Extracted Y scale factor */

165

cairo_bool_t have_shape; /* true if the current scale has a non-scale component*/

166

cairo_matrix_t current_shape;

167

FT_Matrix Current_Shape;

168

169

cairo_mutex_t mutex;

170

int lock_count;

171

172

cairo_ft_font_face_t *faces; /* Linked list of faces for this font */

173

};

174

175

static int

176

_cairo_ft_unscaled_font_keys_equal (const void *key_a,

177

const void *key_b);

178

179

static void

180

_cairo_ft_unscaled_font_fini (cairo_ft_unscaled_font_t *unscaled);

181

182

typedef enum _cairo_ft_extra_flags {

183

CAIRO_FT_OPTIONS_HINT_METRICS = (1 << 0),

184

CAIRO_FT_OPTIONS_EMBOLDEN = (1 << 1)

185

} cairo_ft_extra_flags_t;

186

187

typedef struct _cairo_ft_options {

188

cairo_font_options_t base;

189

int load_flags; /* flags for FT_Load_Glyph */

190

cairo_ft_extra_flags_t extra_flags; /* other flags that affect results */

191

} cairo_ft_options_t;

192

193

struct _cairo_ft_font_face {

194

cairo_font_face_t base;

195

196

cairo_ft_unscaled_font_t *unscaled;

197

cairo_ft_options_t ft_options;

198

cairo_ft_font_face_t *next;

199

200

#if CAIRO_HAS_FC_FONT1

201

FcPattern *pattern; /* if pattern is set, the above fields will be NULL */

202

cairo_font_face_t *resolved_font_face;

203

FcConfig *resolved_config;

204

#endif

205

};

206

207

static const cairo_unscaled_font_backend_t cairo_ft_unscaled_font_backend;

208

209

#if CAIRO_HAS_FC_FONT1

210

static cairo_status_t

211

_cairo_ft_font_options_substitute (const cairo_font_options_t *options,

212

FcPattern *pattern);

213

214

static cairo_font_face_t *

215

_cairo_ft_resolve_pattern (FcPattern *pattern,

216

const cairo_matrix_t *font_matrix,

217

const cairo_matrix_t *ctm,

218

const cairo_font_options_t *options);

219

220

#endif

221

222

223

* We maintain a hash table to map file/id => #cairo_ft_unscaled_font_t.

224

* The hash table itself isn't limited in size. However, we limit the

225

* number of FT_Face objects we keep around; when we've exceeded that

226

* limit and need to create a new FT_Face, we dump the FT_Face from a

227

* random #cairo_ft_unscaled_font_t which has an unlocked FT_Face, (if

228

* there are any).

229

230

231

typedef struct _cairo_ft_unscaled_font_map {

232

cairo_hash_table_t *hash_table;

233

FT_Library ft_library;

234

int num_open_faces;

235

} cairo_ft_unscaled_font_map_t;

236

237

static cairo_ft_unscaled_font_map_t *cairo_ft_unscaled_font_map = NULL((void*)0);

238

239

240

static void

241

_font_map_release_face_lock_held (cairo_ft_unscaled_font_map_t *font_map,

242

cairo_ft_unscaled_font_t *unscaled)

243

{

244

if (unscaled->face) {

245

FT_Done_Face (unscaled->face);

246

unscaled->face = NULL((void*)0);

247

unscaled->have_scale = FALSE0;

248

249

font_map->num_open_faces--;

250

}

251

}

252

253

static cairo_status_t

254

_cairo_ft_unscaled_font_map_create (void)

255

{

256

cairo_ft_unscaled_font_map_t *font_map;

257

258

/* This function is only intended to be called from

259

* _cairo_ft_unscaled_font_map_lock. So we'll crash if we can

260

* detect some other call path. */

261

assert (cairo_ft_unscaled_font_map == NULL)do { if (!(cairo_ft_unscaled_font_map == ((void*)0))) fprintf
(stderr, "Assertion failed at %s:%d: %s\n", "/home/sylvestre/dev/mozilla/ff/firefox.hg/gfx/cairo/cairo/src/cairo-ft-font.c"
, 261, "cairo_ft_unscaled_font_map == NULL"); } while (0);

262

263

font_map = malloc (sizeof (cairo_ft_unscaled_font_map_t));

264

if (unlikely (font_map == NULL)(__builtin_expect (__extension__ ({ int _cairo_boolean_var_; if
(font_map == ((void*)0)) _cairo_boolean_var_ = 1; else _cairo_boolean_var_
= 0; _cairo_boolean_var_; }), 0)))

265

return _cairo_error (CAIRO_STATUS_NO_MEMORY);

266

267

font_map->hash_table =

268

_cairo_hash_table_create (_cairo_ft_unscaled_font_keys_equal);

269

270

if (unlikely (font_map->hash_table == NULL)(__builtin_expect (__extension__ ({ int _cairo_boolean_var_; if
(font_map->hash_table == ((void*)0)) _cairo_boolean_var_ =
1; else _cairo_boolean_var_ = 0; _cairo_boolean_var_; }), 0)
))

271

goto FAIL;

272

273

if (unlikely (FT_Init_FreeType (&font_map->ft_library))(__builtin_expect (__extension__ ({ int _cairo_boolean_var_; if
(FT_Init_FreeType (&font_map->ft_library)) _cairo_boolean_var_
= 1; else _cairo_boolean_var_ = 0; _cairo_boolean_var_; }), 0
)))

274

goto FAIL;

275

276

font_map->num_open_faces = 0;

277

278

cairo_ft_unscaled_font_map = font_map;

279

return CAIRO_STATUS_SUCCESS;

280

281

FAIL:

282

if (font_map->hash_table)

283

_cairo_hash_table_destroy (font_map->hash_table);

284

free (font_map);

285

286

return _cairo_error (CAIRO_STATUS_NO_MEMORY);

287

}

288

289

290

static void

291

_cairo_ft_unscaled_font_map_pluck_entry (void *entry, void *closure)

292

{

293

cairo_ft_unscaled_font_t *unscaled = entry;

294

cairo_ft_unscaled_font_map_t *font_map = closure;

295

296

_cairo_hash_table_remove (font_map->hash_table,

297

&unscaled->base.hash_entry);

298

299

if (! unscaled->from_face)

300

_font_map_release_face_lock_held (font_map, unscaled);

301

302

_cairo_ft_unscaled_font_fini (unscaled);

303

free (unscaled);

304

}

305

306

static void

307

_cairo_ft_unscaled_font_map_destroy (void)

308

{

309

cairo_ft_unscaled_font_map_t *font_map;

310

311

CAIRO_MUTEX_LOCK (_cairo_ft_unscaled_font_map_mutex)pthread_mutex_lock (&(_cairo_ft_unscaled_font_map_mutex));

312

font_map = cairo_ft_unscaled_font_map;

313

cairo_ft_unscaled_font_map = NULL((void*)0);

314

CAIRO_MUTEX_UNLOCK (_cairo_ft_unscaled_font_map_mutex)pthread_mutex_unlock (&(_cairo_ft_unscaled_font_map_mutex
));

315

316

if (font_map != NULL((void*)0)) {

317

_cairo_hash_table_foreach (font_map->hash_table,

318

_cairo_ft_unscaled_font_map_pluck_entry,

319

font_map);

320

assert (font_map->num_open_faces == 0)do { if (!(font_map->num_open_faces == 0)) fprintf(stderr,
"Assertion failed at %s:%d: %s\n", "/home/sylvestre/dev/mozilla/ff/firefox.hg/gfx/cairo/cairo/src/cairo-ft-font.c"
, 320, "font_map->num_open_faces == 0"); } while (0);

321

322

FT_Done_FreeType (font_map->ft_library);

323

324

_cairo_hash_table_destroy (font_map->hash_table);

325

326

free (font_map);

327

}

328

}

329

330

static cairo_ft_unscaled_font_map_t *

331

_cairo_ft_unscaled_font_map_lock (void)

332

{

333

CAIRO_MUTEX_LOCK (_cairo_ft_unscaled_font_map_mutex)pthread_mutex_lock (&(_cairo_ft_unscaled_font_map_mutex));

334

335

if (unlikely (cairo_ft_unscaled_font_map == NULL)(__builtin_expect (__extension__ ({ int _cairo_boolean_var_; if
(cairo_ft_unscaled_font_map == ((void*)0)) _cairo_boolean_var_
= 1; else _cairo_boolean_var_ = 0; _cairo_boolean_var_; }), 0
))) {

←

Within the expansion of the macro 'unlikely':

→

a	Assuming 'cairo_ft_unscaled_font_map' is equal to null

←

Taking true branch

→

336

if (unlikely (_cairo_ft_unscaled_font_map_create ())(__builtin_expect (__extension__ ({ int _cairo_boolean_var_; if
(_cairo_ft_unscaled_font_map_create ()) _cairo_boolean_var_ =
1; else _cairo_boolean_var_ = 0; _cairo_boolean_var_; }), 0)
)) {

←

Within the expansion of the macro 'unlikely':

→

←

Taking false branch

→

337

CAIRO_MUTEX_UNLOCK (_cairo_ft_unscaled_font_map_mutex)pthread_mutex_unlock (&(_cairo_ft_unscaled_font_map_mutex
));

338

return NULL((void*)0);

339

}

340

}

341

342

return cairo_ft_unscaled_font_map;

343

}

344

345

static void

346

_cairo_ft_unscaled_font_map_unlock (void)

347

{

348

CAIRO_MUTEX_UNLOCK (_cairo_ft_unscaled_font_map_mutex)pthread_mutex_unlock (&(_cairo_ft_unscaled_font_map_mutex
));

349

}

350

351

static void

352

_cairo_ft_unscaled_font_init_key (cairo_ft_unscaled_font_t *key,

353

cairo_bool_t from_face,

354

char *filename,

355

int id,

356

FT_Face face)

357

{

358

unsigned long hash;

359

360

key->from_face = from_face;

361

key->filename = filename;

362

key->id = id;

363

key->face = face;

364

365

hash = _cairo_hash_string (filename);

366

/* the constants are just arbitrary primes */

367

hash += ((unsigned long) id) * 1607;

368

hash += ((unsigned long) face) * 2137;

369

370

key->base.hash_entry.hash = hash;

371

}

372

373

/**

374

* _cairo_ft_unscaled_font_init:

375

376

* Initialize a #cairo_ft_unscaled_font_t.

377

378

* There are two basic flavors of #cairo_ft_unscaled_font_t, one

379

* created from an FT_Face and the other created from a filename/id

380

* pair. These two flavors are identified as from_face and !from_face.

381

382

* To initialize a from_face font, pass filename==%NULL, id=0 and the

383

* desired face.

384

385

* To initialize a !from_face font, pass the filename/id as desired

386

* and face==%NULL.

387

388

* Note that the code handles these two flavors in very distinct

389

* ways. For example there is a hash_table mapping

390

* filename/id->#cairo_unscaled_font_t in the !from_face case, but no

391

* parallel in the from_face case, (where the calling code would have

392

* to do its own mapping to ensure similar sharing).

393

**/

394

static cairo_status_t

395

_cairo_ft_unscaled_font_init (cairo_ft_unscaled_font_t *unscaled,

396

cairo_bool_t from_face,

397

const char *filename,

398

int id,

399

FT_Face face)

400

{

401

_cairo_unscaled_font_init (&unscaled->base,

402

&cairo_ft_unscaled_font_backend);

403

404

if (from_face) {

405

unscaled->from_face = TRUE1;

406

_cairo_ft_unscaled_font_init_key (unscaled, TRUE1, NULL((void*)0), 0, face);

407

} else {

408

char *filename_copy;

409

410

unscaled->from_face = FALSE0;

411

unscaled->face = NULL((void*)0);

412

413

filename_copy = strdup (filename);

414

if (unlikely (filename_copy == NULL)(__builtin_expect (__extension__ ({ int _cairo_boolean_var_; if
(filename_copy == ((void*)0)) _cairo_boolean_var_ = 1; else _cairo_boolean_var_
= 0; _cairo_boolean_var_; }), 0)))

415

return _cairo_error (CAIRO_STATUS_NO_MEMORY);

416

417

_cairo_ft_unscaled_font_init_key (unscaled, FALSE0, filename_copy, id, NULL((void*)0));

418

}

419

420

unscaled->have_scale = FALSE0;

421

CAIRO_MUTEX_INIT (unscaled->mutex)do { cairo_mutex_t _tmp_mutex = { { 0, 0, 0, 0, 0, 0, { 0, 0 }
} }; memcpy (&(unscaled->mutex), &_tmp_mutex, sizeof
(_tmp_mutex)); } while (0);

422

unscaled->lock_count = 0;

423

424

unscaled->faces = NULL((void*)0);

425

426

return CAIRO_STATUS_SUCCESS;

427

}

428

429

/**

430

* _cairo_ft_unscaled_font_fini:

431

432

* Free all data associated with a #cairo_ft_unscaled_font_t.

433

434

* CAUTION: The unscaled->face field must be %NULL before calling this

435

* function. This is because the #cairo_ft_unscaled_font_t_map keeps a

436

* count of these faces (font_map->num_open_faces) so it maintains the

437

* unscaled->face field while it has its lock held. See

438

* _font_map_release_face_lock_held().

439

**/

440

static void

441

_cairo_ft_unscaled_font_fini (cairo_ft_unscaled_font_t *unscaled)

442

{

443

assert (unscaled->face == NULL)do { if (!(unscaled->face == ((void*)0))) fprintf(stderr, "Assertion failed at %s:%d: %s\n"
, "/home/sylvestre/dev/mozilla/ff/firefox.hg/gfx/cairo/cairo/src/cairo-ft-font.c"
, 443, "unscaled->face == NULL"); } while (0);

444

445

if (unscaled->filename) {

446

free (unscaled->filename);

447

unscaled->filename = NULL((void*)0);

448

}

449

450

CAIRO_MUTEX_FINI (unscaled->mutex)pthread_mutex_destroy (&(unscaled->mutex));

451

}

452

453

static int

454

_cairo_ft_unscaled_font_keys_equal (const void *key_a,

455

const void *key_b)

456

{

457

const cairo_ft_unscaled_font_t *unscaled_a = key_a;

458

const cairo_ft_unscaled_font_t *unscaled_b = key_b;

459

460

if (unscaled_a->id == unscaled_b->id &&

461

unscaled_a->from_face == unscaled_b->from_face)

462

{

463

if (unscaled_a->from_face)

464

return unscaled_a->face == unscaled_b->face;

465

466

if (unscaled_a->filename == NULL((void*)0) && unscaled_b->filename == NULL((void*)0))

467

return TRUE1;

468

else if (unscaled_a->filename == NULL((void*)0) || unscaled_b->filename == NULL((void*)0))

469

return FALSE0;

470

else

471

return (strcmp (unscaled_a->filename, unscaled_b->filename) == 0);

472

}

473

474

return FALSE0;

475

}

476

477

/* Finds or creates a #cairo_ft_unscaled_font_t for the filename/id from

478

* pattern. Returns a new reference to the unscaled font.

479

480

static cairo_status_t

481

_cairo_ft_unscaled_font_create_internal (cairo_bool_t from_face,

482

char *filename,

483

int id,

484

FT_Face font_face,

485

cairo_ft_unscaled_font_t **out)

486

{

487

cairo_ft_unscaled_font_t key, *unscaled;

488

cairo_ft_unscaled_font_map_t *font_map;

489

cairo_status_t status;

490

491

font_map = _cairo_ft_unscaled_font_map_lock ();

492

493

return _cairo_error (CAIRO_STATUS_NO_MEMORY);

494

495

_cairo_ft_unscaled_font_init_key (&key, from_face, filename, id, font_face);

496

497

/* Return existing unscaled font if it exists in the hash table. */

498

unscaled = _cairo_hash_table_lookup (font_map->hash_table,

499

&key.base.hash_entry);

500

if (unscaled != NULL((void*)0)) {

501

_cairo_unscaled_font_reference (&unscaled->base);

502

goto DONE;

503

}

504

505

/* Otherwise create it and insert into hash table. */

506

unscaled = malloc (sizeof (cairo_ft_unscaled_font_t));

507

if (unlikely (unscaled == NULL)(__builtin_expect (__extension__ ({ int _cairo_boolean_var_; if
(unscaled == ((void*)0)) _cairo_boolean_var_ = 1; else _cairo_boolean_var_
= 0; _cairo_boolean_var_; }), 0))) {

508

status = _cairo_error (CAIRO_STATUS_NO_MEMORY);

509

goto UNWIND_FONT_MAP_LOCK;

510

}

511

512

status = _cairo_ft_unscaled_font_init (unscaled, from_face, filename, id, font_face);

513

if (unlikely (status)(__builtin_expect (__extension__ ({ int _cairo_boolean_var_; if
(status) _cairo_boolean_var_ = 1; else _cairo_boolean_var_ =
0; _cairo_boolean_var_; }), 0)))

514

goto UNWIND_UNSCALED_MALLOC;

515

516

assert (unscaled->base.hash_entry.hash == key.base.hash_entry.hash)do { if (!(unscaled->base.hash_entry.hash == key.base.hash_entry
.hash)) fprintf(stderr, "Assertion failed at %s:%d: %s\n", "/home/sylvestre/dev/mozilla/ff/firefox.hg/gfx/cairo/cairo/src/cairo-ft-font.c"
, 516, "unscaled->base.hash_entry.hash == key.base.hash_entry.hash"
); } while (0);

517

status = _cairo_hash_table_insert (font_map->hash_table,

518

&unscaled->base.hash_entry);

519

if (unlikely (status)(__builtin_expect (__extension__ ({ int _cairo_boolean_var_; if
(status) _cairo_boolean_var_ = 1; else _cairo_boolean_var_ =
0; _cairo_boolean_var_; }), 0)))

520

goto UNWIND_UNSCALED_FONT_INIT;

521

522

DONE:

523

_cairo_ft_unscaled_font_map_unlock ();

524

*out = unscaled;

525

return CAIRO_STATUS_SUCCESS;

526

527

UNWIND_UNSCALED_FONT_INIT:

528

_cairo_ft_unscaled_font_fini (unscaled);

529

UNWIND_UNSCALED_MALLOC:

530

free (unscaled);

531

UNWIND_FONT_MAP_LOCK:

532

_cairo_ft_unscaled_font_map_unlock ();

533

return status;

534

}

535

536

537

#if CAIRO_HAS_FC_FONT1

538

static cairo_status_t

539

_cairo_ft_unscaled_font_create_for_pattern (FcPattern *pattern,

540

cairo_ft_unscaled_font_t **out)

541

{

542

FT_Face font_face = NULL((void*)0);

543

char *filename = NULL((void*)0);

544

int id = 0;

545

FcResult ret;

546

547

ret = FcPatternGetFTFace (pattern, FC_FT_FACE"ftface", 0, &font_face);

548

if (ret == FcResultMatch)

549

goto DONE;

550

if (ret == FcResultOutOfMemory)

551

return _cairo_error (CAIRO_STATUS_NO_MEMORY);

552

553

ret = FcPatternGetString (pattern, FC_FILE"file", 0, (FcChar8 **) &filename);

554

if (ret == FcResultOutOfMemory)

555

return _cairo_error (CAIRO_STATUS_NO_MEMORY);

556

if (ret == FcResultMatch) {

557

/* If FC_INDEX is not set, we just use 0 */

558

ret = FcPatternGetInteger (pattern, FC_INDEX"index", 0, &id);

559

if (ret == FcResultOutOfMemory)

560

return _cairo_error (CAIRO_STATUS_NO_MEMORY);

561

562

goto DONE;

563

}

564

565

/* The pattern contains neither a face nor a filename, resolve it later. */

566

*out = NULL((void*)0);

567

return CAIRO_STATUS_SUCCESS;

568

569

DONE:

570

return _cairo_ft_unscaled_font_create_internal (font_face != NULL((void*)0),

571

filename, id, font_face,

572

out);

573

}

574

#endif

575

576

static cairo_status_t

577

_cairo_ft_unscaled_font_create_from_face (FT_Face face,

578

cairo_ft_unscaled_font_t **out)

579

{

580

return _cairo_ft_unscaled_font_create_internal (TRUE1, NULL((void*)0), 0, face, out);

581

}

582

583

static void

584

_cairo_ft_unscaled_font_destroy (void *abstract_font)

585

{

586

cairo_ft_unscaled_font_t *unscaled = abstract_font;

587

cairo_ft_unscaled_font_map_t *font_map;

588

589

if (unscaled == NULL((void*)0))

Assuming 'unscaled' is not equal to null

→

←

Taking false branch

→

590

return;

591

592

font_map = _cairo_ft_unscaled_font_map_lock ();

←

Calling '_cairo_ft_unscaled_font_map_lock'

→

←

Returning from '_cairo_ft_unscaled_font_map_lock'

→

←

Value assigned to 'font_map'

→

593

/* All created objects must have been mapped in the font map. */

594

assert (font_map != NULL)do { if (!(font_map != ((void*)0))) fprintf(stderr, "Assertion failed at %s:%d: %s\n"
, "/home/sylvestre/dev/mozilla/ff/firefox.hg/gfx/cairo/cairo/src/cairo-ft-font.c"
, 594, "font_map != NULL"); } while (0);

←

Within the expansion of the macro 'assert':

→

a	Assuming 'font_map' is equal to null

595

596

if (CAIRO_REFERENCE_COUNT_HAS_REFERENCE (&unscaled->base.ref_count)((*&(&unscaled->base.ref_count)->ref_count) >
0)) {

←

Taking false branch

→

597

/* somebody recreated the font whilst we waited for the lock */

598

_cairo_ft_unscaled_font_map_unlock ();

599

return;

600

}

601

602

_cairo_hash_table_remove (font_map->hash_table,

←

Access to field 'hash_table' results in a dereference of a null pointer (loaded from variable 'font_map')

603

&unscaled->base.hash_entry);

604

605

if (unscaled->from_face) {

606

/* See comments in _ft_font_face_destroy about the "zombie" state

607

* for a _ft_font_face.

608

609

if (unscaled->faces && unscaled->faces->unscaled == NULL((void*)0)) {

610

assert (unscaled->faces->next == NULL)do { if (!(unscaled->faces->next == ((void*)0))) fprintf
(stderr, "Assertion failed at %s:%d: %s\n", "/home/sylvestre/dev/mozilla/ff/firefox.hg/gfx/cairo/cairo/src/cairo-ft-font.c"
, 610, "unscaled->faces->next == NULL"); } while (0);

611

cairo_font_face_destroy_moz_cairo_font_face_destroy (&unscaled->faces->base);

612

}

613

} else {

614

_font_map_release_face_lock_held (font_map, unscaled);

615

}

616

unscaled->face = NULL((void*)0);

617

618

_cairo_ft_unscaled_font_map_unlock ();

619

620

_cairo_ft_unscaled_font_fini (unscaled);

621

}

622

623

static cairo_bool_t

624

_has_unlocked_face (const void *entry)

625

{

626

const cairo_ft_unscaled_font_t *unscaled = entry;

627

628

return (!unscaled->from_face && unscaled->lock_count == 0 && unscaled->face);

629

}

630

631

/* Ensures that an unscaled font has a face object. If we exceed

632

* MAX_OPEN_FACES, try to close some.

633

634

* This differs from _cairo_ft_scaled_font_lock_face in that it doesn't

635

* set the scale on the face, but just returns it at the last scale.

636

637

cairo_warn FT_Face

638

_cairo_ft_unscaled_font_lock_face (cairo_ft_unscaled_font_t *unscaled)

639

{

640

cairo_ft_unscaled_font_map_t *font_map;

641

FT_Face face = NULL((void*)0);

642

643

CAIRO_MUTEX_LOCK (unscaled->mutex)pthread_mutex_lock (&(unscaled->mutex));

644

unscaled->lock_count++;

645

646

if (unscaled->face)

647

return unscaled->face;

648

649

/* If this unscaled font was created from an FT_Face then we just

650

* returned it above. */

651

assert (!unscaled->from_face)do { if (!(!unscaled->from_face)) fprintf(stderr, "Assertion failed at %s:%d: %s\n"
, "/home/sylvestre/dev/mozilla/ff/firefox.hg/gfx/cairo/cairo/src/cairo-ft-font.c"
, 651, "!unscaled->from_face"); } while (0);

652

653

font_map = _cairo_ft_unscaled_font_map_lock ();

654

{

655

656

657

while (font_map->num_open_faces >= MAX_OPEN_FACES10)

658

{

659

cairo_ft_unscaled_font_t *entry;

660

661

entry = _cairo_hash_table_random_entry (font_map->hash_table,

662

_has_unlocked_face);

663

if (entry == NULL((void*)0))

664

break;

665

666

_font_map_release_face_lock_held (font_map, entry);

667

}

668

}

669

_cairo_ft_unscaled_font_map_unlock ();

670

671

if (FT_New_Face (font_map->ft_library,

672

unscaled->filename,

673

unscaled->id,

674

&face) != FT_Err_Ok)

675

{

676

unscaled->lock_count--;

677

CAIRO_MUTEX_UNLOCK (unscaled->mutex)pthread_mutex_unlock (&(unscaled->mutex));

678

_cairo_error_throw (CAIRO_STATUS_NO_MEMORY)do { cairo_status_t status__ = _cairo_error (CAIRO_STATUS_NO_MEMORY
); (void) status__; } while (0);

679

return NULL((void*)0);

680

}

681

682

unscaled->face = face;

683

684

font_map->num_open_faces++;

685

686

return face;

687

}

688

689

690

/* Unlock unscaled font locked with _cairo_ft_unscaled_font_lock_face

691

692

void

693

_cairo_ft_unscaled_font_unlock_face (cairo_ft_unscaled_font_t *unscaled)

694

{

695

assert (unscaled->lock_count > 0)do { if (!(unscaled->lock_count > 0)) fprintf(stderr, "Assertion failed at %s:%d: %s\n"
, "/home/sylvestre/dev/mozilla/ff/firefox.hg/gfx/cairo/cairo/src/cairo-ft-font.c"
, 695, "unscaled->lock_count > 0"); } while (0);

696

697

unscaled->lock_count--;

698

699

CAIRO_MUTEX_UNLOCK (unscaled->mutex)pthread_mutex_unlock (&(unscaled->mutex));

700

}

701

702

703

static cairo_status_t

704

_compute_transform (cairo_ft_font_transform_t *sf,

705

cairo_matrix_t *scale)

706

{

707

cairo_status_t status;

708

double x_scale, y_scale;

709

cairo_matrix_t normalized = *scale;

710

711

/* The font matrix has x and y "scale" components which we extract and

712

* use as character scale values. These influence the way freetype

713

* chooses hints, as well as selecting different bitmaps in

714

* hand-rendered fonts. We also copy the normalized matrix to

715

* freetype's transformation.

716

717

718

status = _cairo_matrix_compute_basis_scale_factors (scale,

719

&x_scale, &y_scale,

720

1);

721

if (unlikely (status)(__builtin_expect (__extension__ ({ int _cairo_boolean_var_; if
(status) _cairo_boolean_var_ = 1; else _cairo_boolean_var_ =
0; _cairo_boolean_var_; }), 0)))

722

return status;

723

724

/* FreeType docs say this about x_scale and y_scale:

725

* "A character width or height smaller than 1pt is set to 1pt;"

726

* So, we cap them from below at 1.0 and let the FT transform

727

* take care of sub-1.0 scaling. */

728

if (x_scale < 1.0)

729

x_scale = 1.0;

730

if (y_scale < 1.0)

731

y_scale = 1.0;

732

733

sf->x_scale = x_scale;

734

sf->y_scale = y_scale;

735

736

cairo_matrix_scale_moz_cairo_matrix_scale (&normalized, 1.0 / x_scale, 1.0 / y_scale);

737

738

_cairo_matrix_get_affine (&normalized,

739

&sf->shape[0][0], &sf->shape[0][1],

740

&sf->shape[1][0], &sf->shape[1][1],

741

NULL((void*)0), NULL((void*)0));

742

743

return CAIRO_STATUS_SUCCESS;

744

}

745

746

/* Temporarily scales an unscaled font to the give scale. We catch

747

* scaling to the same size, since changing a FT_Face is expensive.

748

749

static cairo_status_t

750

_cairo_ft_unscaled_font_set_scale (cairo_ft_unscaled_font_t *unscaled,

751

cairo_matrix_t *scale)

752

{

753

cairo_status_t status;

754

cairo_ft_font_transform_t sf;

755

FT_Matrix mat;

756

FT_Error error;

757

758

assert (unscaled->face != NULL)do { if (!(unscaled->face != ((void*)0))) fprintf(stderr, "Assertion failed at %s:%d: %s\n"
, "/home/sylvestre/dev/mozilla/ff/firefox.hg/gfx/cairo/cairo/src/cairo-ft-font.c"
, 758, "unscaled->face != NULL"); } while (0);

759

760

if (unscaled->have_scale &&

761

scale->xx == unscaled->current_scale.xx &&

762

scale->yx == unscaled->current_scale.yx &&

763

scale->xy == unscaled->current_scale.xy &&

764

scale->yy == unscaled->current_scale.yy)

765

return CAIRO_STATUS_SUCCESS;

766

767

unscaled->have_scale = TRUE1;

768

unscaled->current_scale = *scale;

769

770

status = _compute_transform (&sf, scale);

771

if (unlikely (status)(__builtin_expect (__extension__ ({ int _cairo_boolean_var_; if
(status) _cairo_boolean_var_ = 1; else _cairo_boolean_var_ =
0; _cairo_boolean_var_; }), 0)))

772

return status;

773

774

unscaled->x_scale = sf.x_scale;

775

unscaled->y_scale = sf.y_scale;

776

777

mat.xx = DOUBLE_TO_16_16(sf.shape[0][0])((FT_Fixed)((sf.shape[0][0]) * 65536.0));

778

mat.yx = - DOUBLE_TO_16_16(sf.shape[0][1])((FT_Fixed)((sf.shape[0][1]) * 65536.0));

779

mat.xy = - DOUBLE_TO_16_16(sf.shape[1][0])((FT_Fixed)((sf.shape[1][0]) * 65536.0));

780

mat.yy = DOUBLE_TO_16_16(sf.shape[1][1])((FT_Fixed)((sf.shape[1][1]) * 65536.0));

781

782

unscaled->have_shape = (mat.xx != 0x10000 ||

783

mat.yx != 0x00000 ||

784

mat.xy != 0x00000 ||

785

mat.yy != 0x10000);

786

787

unscaled->Current_Shape = mat;

788

cairo_matrix_init_moz_cairo_matrix_init (&unscaled->current_shape,

789

sf.shape[0][0], sf.shape[0][1],

790

sf.shape[1][0], sf.shape[1][1],

791

0.0, 0.0);

792

793

FT_Set_Transform(unscaled->face, &mat, NULL((void*)0));

794

795

if ((unscaled->face->face_flags & FT_FACE_FLAG_SCALABLE( 1L << 0 )) != 0) {

796

double x_scale = MIN(sf.x_scale, MAX_FONT_SIZE)((sf.x_scale) < (1000) ? (sf.x_scale) : (1000));

797

double y_scale = MIN(sf.y_scale, MAX_FONT_SIZE)((sf.y_scale) < (1000) ? (sf.y_scale) : (1000));

798

error = FT_Set_Char_Size (unscaled->face,

799

x_scale * 64.0 + .5,

800

y_scale * 64.0 + .5,

801

0, 0);

802

if (error)

803

return _cairo_error (CAIRO_STATUS_NO_MEMORY);

804

} else {

805

double min_distance = DBL_MAX1.7976931348623157e+308;

806

int i;

807

int best_i = 0;

808

809

for (i = 0; i < unscaled->face->num_fixed_sizes; i++) {

810

#if HAVE_FT_BITMAP_SIZE_Y_PPEM1

811

double size = unscaled->face->available_sizes[i].y_ppem / 64.;

812

#else

813

double size = unscaled->face->available_sizes[i].height;

814

#endif

815

double distance = fabs (size - sf.y_scale);

816

817

if (distance <= min_distance) {

818

min_distance = distance;

819

best_i = i;

820

}

821

}

822

#if HAVE_FT_BITMAP_SIZE_Y_PPEM1

823

error = FT_Set_Char_Size (unscaled->face,

824

unscaled->face->available_sizes[best_i].x_ppem,

825

unscaled->face->available_sizes[best_i].y_ppem,

826

0, 0);

827

if (error)

828

#endif

829

error = FT_Set_Pixel_Sizes (unscaled->face,

830

unscaled->face->available_sizes[best_i].width,

831

unscaled->face->available_sizes[best_i].height);

832

if (error)

833

return _cairo_error (CAIRO_STATUS_NO_MEMORY);

834

}

835

836

return CAIRO_STATUS_SUCCESS;

837

}

838

839

/* we sometimes need to convert the glyph bitmap in a FT_GlyphSlot

840

* into a different format. For example, we want to convert a

841

* FT_PIXEL_MODE_LCD or FT_PIXEL_MODE_LCD_V bitmap into a 32-bit

842

* ARGB or ABGR bitmap.

843

844

* this function prepares a target descriptor for this operation.

845

846

* input :: target bitmap descriptor. The function will set its

847

* 'width', 'rows' and 'pitch' fields, and only these

848

849

* slot :: the glyph slot containing the source bitmap. this

850

* function assumes that slot->format == FT_GLYPH_FORMAT_BITMAP

851

852

* mode :: the requested final rendering mode. supported values are

853

* MONO, NORMAL (i.e. gray), LCD and LCD_V

854

855

* the function returns the size in bytes of the corresponding buffer,

856

* it's up to the caller to allocate the corresponding memory block

857

* before calling _fill_xrender_bitmap

858

859

* it also returns -1 in case of error (e.g. incompatible arguments,

860

* like trying to convert a gray bitmap into a monochrome one)

861

862

static int

863

_compute_xrender_bitmap_size(FT_Bitmap *target,

864

FT_GlyphSlot slot,

865

FT_Render_Mode mode)

866

{

867

FT_Bitmap *ftbit;

868

int width, height, pitch;

869

870

if (slot->format != FT_GLYPH_FORMAT_BITMAP)

871

return -1;

872

873

/* compute the size of the final bitmap */

874

ftbit = &slot->bitmap;

875

876

width = ftbit->width;

877

height = ftbit->rows;

878

pitch = (width + 3) & ~3;

879

880

switch (ftbit->pixel_mode) {

881

case FT_PIXEL_MODE_MONO:

882

if (mode == FT_RENDER_MODE_MONO) {

883

pitch = (((width + 31) & ~31) >> 3);

884

break;

885

}

886

/* fall-through */

887

888

case FT_PIXEL_MODE_GRAY:

889

if (mode == FT_RENDER_MODE_LCD ||

890

mode == FT_RENDER_MODE_LCD_V)

891

{

892

/* each pixel is replicated into a 32-bit ARGB value */

893

pitch = width * 4;

894

}

895

break;

896

897

case FT_PIXEL_MODE_LCD:

898

if (mode != FT_RENDER_MODE_LCD)

899

return -1;

900

901

/* horz pixel triplets are packed into 32-bit ARGB values */

902

width /= 3;

903

pitch = width * 4;

904

break;

905

906

case FT_PIXEL_MODE_LCD_V:

907

if (mode != FT_RENDER_MODE_LCD_V)

908

return -1;

909

910

/* vert pixel triplets are packed into 32-bit ARGB values */

911

height /= 3;

912

pitch = width * 4;

913

break;

914

915

default: /* unsupported source format */

916

return -1;

917

}

918

919

target->width = width;

920

target->rows = height;

921

target->pitch = pitch;

922

target->buffer = NULL((void*)0);

923

924

return pitch * height;

925

}

926

927

/* this functions converts the glyph bitmap found in a FT_GlyphSlot

928

* into a different format (see _compute_xrender_bitmap_size)

929

930

* you should call this function after _compute_xrender_bitmap_size

931

932

* target :: target bitmap descriptor. Note that its 'buffer' pointer

933

* must point to memory allocated by the caller

934

935

* slot :: the glyph slot containing the source bitmap

936

937

* mode :: the requested final rendering mode

938

939

* bgr :: boolean, set if BGR or VBGR pixel ordering is needed

940

941

static void

942

_fill_xrender_bitmap(FT_Bitmap *target,

943

FT_GlyphSlot slot,

944

FT_Render_Mode mode,

945

int bgr)

946

{

947

FT_Bitmap *ftbit = &slot->bitmap;

948

unsigned char *srcLine = ftbit->buffer;

949

unsigned char *dstLine = target->buffer;

950

int src_pitch = ftbit->pitch;

951

int width = target->width;

952

int height = target->rows;

953

int pitch = target->pitch;

954

int subpixel;

955

int h;

956

957

subpixel = (mode == FT_RENDER_MODE_LCD ||

958

mode == FT_RENDER_MODE_LCD_V);

959

960

if (src_pitch < 0)

961

srcLine -= src_pitch * (ftbit->rows - 1);

962

963

target->pixel_mode = ftbit->pixel_mode;

964

965

switch (ftbit->pixel_mode) {

966

case FT_PIXEL_MODE_MONO:

967

if (subpixel) {

968

/* convert mono to ARGB32 values */

969

970

for (h = height; h > 0; h--, srcLine += src_pitch, dstLine += pitch) {

971

int x;

972

973

for (x = 0; x < width; x++) {

974

if (srcLine[(x >> 3)] & (0x80 >> (x & 7)))

975

((unsigned int *) dstLine)[x] = 0xffffffffU;

976

}

977

}

978

target->pixel_mode = FT_PIXEL_MODE_LCD;

979

980

} else if (mode == FT_RENDER_MODE_NORMAL) {

981

/* convert mono to 8-bit gray */

982

983

for (h = height; h > 0; h--, srcLine += src_pitch, dstLine += pitch) {

984

int x;

985

986

for (x = 0; x < width; x++) {

987

if (srcLine[(x >> 3)] & (0x80 >> (x & 7)))

988

dstLine[x] = 0xff;

989

}

990

}

991

target->pixel_mode = FT_PIXEL_MODE_GRAY;

992

993

} else {

994

/* copy mono to mono */

995

996

int bytes = (width + 7) >> 3;

997

998

for (h = height; h > 0; h--, srcLine += src_pitch, dstLine += pitch)

999

memcpy (dstLine, srcLine, bytes);

1000

}

1001

break;

1002

1003

case FT_PIXEL_MODE_GRAY:

1004

if (subpixel) {

1005

/* convert gray to ARGB32 values */

1006

1007

for (h = height; h > 0; h--, srcLine += src_pitch, dstLine += pitch) {

1008

int x;

1009

unsigned int *dst = (unsigned int *) dstLine;

1010

1011

for (x = 0; x < width; x++) {

1012

unsigned int pix = srcLine[x];

1013

1014

pix |= (pix << 8);

1015

pix |= (pix << 16);

1016

1017

dst[x] = pix;

1018

}

1019

}

1020

target->pixel_mode = FT_PIXEL_MODE_LCD;

1021

} else {

1022

/* copy gray into gray */

1023

1024

for (h = height; h > 0; h--, srcLine += src_pitch, dstLine += pitch)

1025

memcpy (dstLine, srcLine, width);

1026

}

1027

break;

1028

1029

case FT_PIXEL_MODE_LCD:

1030

if (!bgr) {

1031

/* convert horizontal RGB into ARGB32 */

1032

1033

for (h = height; h > 0; h--, srcLine += src_pitch, dstLine += pitch) {

1034

int x;

1035

unsigned char *src = srcLine;

1036

unsigned int *dst = (unsigned int *) dstLine;

1037

1038

for (x = 0; x < width; x++, src += 3) {

1039

unsigned int pix;

1040

1041

pix = ((unsigned int)src[0] << 16) |

1042

((unsigned int)src[1] << 8) |

1043

((unsigned int)src[2] ) |

1044

((unsigned int)src[1] << 24) ;

1045

1046

dst[x] = pix;

1047

}

1048

}

1049

} else {

1050

/* convert horizontal BGR into ARGB32 */

1051

1052

for (h = height; h > 0; h--, srcLine += src_pitch, dstLine += pitch) {

1053

1054

int x;

1055

unsigned char *src = srcLine;

1056

unsigned int *dst = (unsigned int *) dstLine;

1057

1058

for (x = 0; x < width; x++, src += 3) {

1059

unsigned int pix;

1060

1061

pix = ((unsigned int)src[2] << 16) |

1062

((unsigned int)src[1] << 8) |

1063

((unsigned int)src[0] ) |

1064

((unsigned int)src[1] << 24) ;

1065

1066

dst[x] = pix;

1067

}

1068

}

1069

}

1070

break;

1071

1072

default: /* FT_PIXEL_MODE_LCD_V */

1073

/* convert vertical RGB into ARGB32 */

1074

if (!bgr) {

1075

1076

for (h = height; h > 0; h--, srcLine += 3 * src_pitch, dstLine += pitch) {

1077

int x;

1078

unsigned char* src = srcLine;

1079

unsigned int* dst = (unsigned int *) dstLine;

1080

1081

for (x = 0; x < width; x++, src += 1) {

1082

unsigned int pix;

1083

pix = ((unsigned int)src[0] << 16) |

1084

((unsigned int)src[src_pitch] << 8) |

1085

((unsigned int)src[src_pitch*2] ) |

1086

((unsigned int)src[src_pitch] << 24) ;

1087

dst[x] = pix;

1088

}

1089

}

1090

} else {

1091

1092

for (h = height; h > 0; h--, srcLine += 3*src_pitch, dstLine += pitch) {

1093

int x;

1094

unsigned char *src = srcLine;

1095

unsigned int *dst = (unsigned int *) dstLine;

1096

1097

for (x = 0; x < width; x++, src += 1) {

1098

unsigned int pix;

1099

1100

pix = ((unsigned int)src[src_pitch * 2] << 16) |

1101

((unsigned int)src[src_pitch] << 8) |

1102

((unsigned int)src[0] ) |

1103

((unsigned int)src[src_pitch] << 24) ;

1104

1105

dst[x] = pix;

1106

}

1107

}

1108

}

1109

}

1110

}

1111

1112

1113

/* Fills in val->image with an image surface created from @bitmap

1114

1115

static cairo_status_t

1116

_get_bitmap_surface (FT_Bitmap *bitmap,

1117

cairo_bool_t own_buffer,

1118

cairo_font_options_t *font_options,

1119

cairo_image_surface_t **surface)

1120

{

1121

int width, height, stride;

1122

unsigned char *data;

1123

int format = CAIRO_FORMAT_A8;

1124

cairo_image_surface_t *image;

1125

1126

width = bitmap->width;

1127

height = bitmap->rows;

1128

1129

if (width == 0 || height == 0) {

1130

*surface = (cairo_image_surface_t *)

1131

cairo_image_surface_create_for_data_moz_cairo_image_surface_create_for_data (NULL((void*)0), format, 0, 0, 0);

1132

return (*surface)->base.status;

1133

}

1134

1135

switch (bitmap->pixel_mode) {

1136

case FT_PIXEL_MODE_MONO:

1137

stride = (((width + 31) & ~31) >> 3);

1138

if (own_buffer) {

1139

data = bitmap->buffer;

1140

assert (stride == bitmap->pitch)do { if (!(stride == bitmap->pitch)) fprintf(stderr, "Assertion failed at %s:%d: %s\n"
, "/home/sylvestre/dev/mozilla/ff/firefox.hg/gfx/cairo/cairo/src/cairo-ft-font.c"
, 1140, "stride == bitmap->pitch"); } while (0);

1141

} else {

1142

data = _cairo_malloc_ab (height, stride)((stride) && (unsigned) (height) >= (2147483647) /
(unsigned) (stride) ? ((void*)0) : (((unsigned) (height) * (
unsigned) (stride)) ? malloc((unsigned) ((unsigned) (height) *
(unsigned) (stride))) : ((void*)0)));

1143

if (!data)

1144

return _cairo_error (CAIRO_STATUS_NO_MEMORY);

1145

1146

if (stride == bitmap->pitch) {

1147

memcpy (data, bitmap->buffer, stride * height);

1148

} else {

1149

int i;

1150

unsigned char *source, *dest;

1151

1152

source = bitmap->buffer;

1153

dest = data;

1154

for (i = height; i; i--) {

1155

memcpy (dest, source, bitmap->pitch);

1156

memset (dest + bitmap->pitch, '\0', stride - bitmap->pitch);

1157

1158

source += bitmap->pitch;

1159

dest += stride;

1160

}

1161

}

1162

}

1163

1164

#ifndef WORDS_BIGENDIAN

1165

{

1166

uint8_t *d = data;

1167

int count = stride * height;

1168

1169

while (count--) {

1170

*d = CAIRO_BITSWAP8 (*d)((((*d) * 0x0802LU & 0x22110LU) | ((*d) * 0x8020LU & 0x88440LU
)) * 0x10101LU >> 16);

1171

d++;

1172

}

1173

}

1174

#endif

1175

format = CAIRO_FORMAT_A1;

1176

break;

1177

1178

case FT_PIXEL_MODE_LCD:

1179

case FT_PIXEL_MODE_LCD_V:

1180

case FT_PIXEL_MODE_GRAY:

1181

if (font_options->antialias != CAIRO_ANTIALIAS_SUBPIXEL) {

1182

stride = bitmap->pitch;

1183

if (own_buffer) {

1184

data = bitmap->buffer;

1185

} else {

1186

1187

if (!data)

1188

return _cairo_error (CAIRO_STATUS_NO_MEMORY);

1189

1190

memcpy (data, bitmap->buffer, stride * height);

1191

}

1192

1193

format = CAIRO_FORMAT_A8;

1194

} else {

1195

/* if we get there, the data from the source bitmap

1196

* really comes from _fill_xrender_bitmap, and is

1197

* made of 32-bit ARGB or ABGR values */

1198

assert (own_buffer != 0)do { if (!(own_buffer != 0)) fprintf(stderr, "Assertion failed at %s:%d: %s\n"
, "/home/sylvestre/dev/mozilla/ff/firefox.hg/gfx/cairo/cairo/src/cairo-ft-font.c"
, 1198, "own_buffer != 0"); } while (0);

1199

assert (bitmap->pixel_mode != FT_PIXEL_MODE_GRAY)do { if (!(bitmap->pixel_mode != FT_PIXEL_MODE_GRAY)) fprintf
(stderr, "Assertion failed at %s:%d: %s\n", "/home/sylvestre/dev/mozilla/ff/firefox.hg/gfx/cairo/cairo/src/cairo-ft-font.c"
, 1199, "bitmap->pixel_mode != FT_PIXEL_MODE_GRAY"); } while
(0);

1200

1201

data = bitmap->buffer;

1202

stride = bitmap->pitch;

1203

format = CAIRO_FORMAT_ARGB32;

1204

}

1205

break;

1206

case FT_PIXEL_MODE_GRAY2:

1207

case FT_PIXEL_MODE_GRAY4:

1208

/* These could be triggered by very rare types of TrueType fonts */

1209

default:

1210

if (own_buffer)

1211

free (bitmap->buffer);

1212

return _cairo_error (CAIRO_STATUS_NO_MEMORY);

1213

}

1214

1215

/* XXX */

1216

*surface = image = (cairo_image_surface_t *)

1217

cairo_image_surface_create_for_data_moz_cairo_image_surface_create_for_data (data,

1218

format,

1219

width, height, stride);

1220

if (image->base.status) {

1221

free (data);

1222

return (*surface)->base.status;

1223

}

1224

1225

if (format == CAIRO_FORMAT_ARGB32)

1226

pixman_image_set_component_alpha_moz_pixman_image_set_component_alpha (image->pixman_image, TRUE1);

1227

1228

_cairo_image_surface_assume_ownership_of_data (image);

1229

1230

_cairo_debug_check_image_surface_is_defined (&image->base);

1231

1232

return CAIRO_STATUS_SUCCESS;

1233

}

1234

1235

/* Converts an outline FT_GlyphSlot into an image

1236

1237

* This could go through _render_glyph_bitmap as well, letting

1238

* FreeType convert the outline to a bitmap, but doing it ourselves

1239

* has two minor advantages: first, we save a copy of the bitmap

1240

* buffer: we can directly use the buffer that FreeType renders

1241

* into.

1242

1243

* Second, it may help when we add support for subpixel

1244

* rendering: the Xft code does it this way. (Keith thinks that

1245

* it may also be possible to get the subpixel rendering with

1246

* FT_Render_Glyph: something worth looking into in more detail

1247

* when we add subpixel support. If so, we may want to eliminate

1248

* this version of the code path entirely.

1249

1250

static cairo_status_t

1251

_render_glyph_outline (FT_Face face,

1252

cairo_font_options_t *font_options,

1253

cairo_image_surface_t **surface)

1254

{

1255

int rgba = FC_RGBA_UNKNOWN0;

1256

int lcd_filter = FT_LCD_FILTER_LEGACY16;

1257

FT_GlyphSlot glyphslot = face->glyph;

1258

FT_Outline *outline = &glyphslot->outline;

1259

FT_Bitmap bitmap;

1260

FT_BBox cbox;

1261

unsigned int width, height;

1262

cairo_status_t status;

1263

FT_Error fterror;

1264

FT_Library library = glyphslot->library;

1265

FT_Render_Mode render_mode = FT_RENDER_MODE_NORMAL;

1266

1267

switch (font_options->antialias) {

1268

case CAIRO_ANTIALIAS_NONE:

1269

render_mode = FT_RENDER_MODE_MONO;

1270

break;

1271

1272

case CAIRO_ANTIALIAS_SUBPIXEL:

1273

switch (font_options->subpixel_order) {

1274

case CAIRO_SUBPIXEL_ORDER_DEFAULT:

1275

case CAIRO_SUBPIXEL_ORDER_RGB:

1276

case CAIRO_SUBPIXEL_ORDER_BGR:

1277

render_mode = FT_RENDER_MODE_LCD;

1278

break;

1279

1280

case CAIRO_SUBPIXEL_ORDER_VRGB:

1281

case CAIRO_SUBPIXEL_ORDER_VBGR:

1282

render_mode = FT_RENDER_MODE_LCD_V;

1283

break;

1284

}

1285

1286

switch (font_options->lcd_filter) {

1287

case CAIRO_LCD_FILTER_NONE:

1288

lcd_filter = FT_LCD_FILTER_NONE0;

1289

break;

1290

case CAIRO_LCD_FILTER_DEFAULT:

1291

case CAIRO_LCD_FILTER_INTRA_PIXEL:

1292

lcd_filter = FT_LCD_FILTER_LEGACY16;

1293

break;

1294

case CAIRO_LCD_FILTER_FIR3:

1295

lcd_filter = FT_LCD_FILTER_LIGHT2;

1296

break;

1297

case CAIRO_LCD_FILTER_FIR5:

1298

lcd_filter = FT_LCD_FILTER_DEFAULT1;

1299

break;

1300

}

1301

1302

break;

1303

1304

case CAIRO_ANTIALIAS_DEFAULT:

1305

case CAIRO_ANTIALIAS_GRAY:

1306

render_mode = FT_RENDER_MODE_NORMAL;

1307

}

1308

1309

FT_Outline_Get_CBox (outline, &cbox);

1310

1311

cbox.xMin &= -64;

1312

cbox.yMin &= -64;

1313

cbox.xMax = (cbox.xMax + 63) & -64;

1314

cbox.yMax = (cbox.yMax + 63) & -64;

1315

1316

width = (unsigned int) ((cbox.xMax - cbox.xMin) >> 6);

1317

height = (unsigned int) ((cbox.yMax - cbox.yMin) >> 6);

1318

1319

if (width * height == 0) {

1320

cairo_format_t format;

1321

/* Looks like fb handles zero-sized images just fine */

1322

switch (render_mode) {

1323

case FT_RENDER_MODE_MONO:

1324

format = CAIRO_FORMAT_A1;

1325

break;

1326

case FT_RENDER_MODE_LCD:

1327

case FT_RENDER_MODE_LCD_V:

1328

format= CAIRO_FORMAT_ARGB32;

1329

break;

1330

case FT_RENDER_MODE_LIGHT:

1331

case FT_RENDER_MODE_NORMAL:

1332

case FT_RENDER_MODE_MAX:

1333

default:

1334

format = CAIRO_FORMAT_A8;

1335

break;

1336

}

1337

1338

(*surface) = (cairo_image_surface_t *)

1339

cairo_image_surface_create_for_data_moz_cairo_image_surface_create_for_data (NULL((void*)0), format, 0, 0, 0);

1340

if ((*surface)->base.status)

1341

return (*surface)->base.status;

1342

} else {

1343

1344

int bitmap_size;

1345

static int initialized_setLcdFilter = 0;

1346

1347

switch (render_mode) {

1348

case FT_RENDER_MODE_LCD:

1349

if (font_options->subpixel_order == CAIRO_SUBPIXEL_ORDER_BGR) {

1350

rgba = FC_RGBA_BGR2;

1351

} else {

1352

rgba = FC_RGBA_RGB1;

1353

}

1354

break;

1355

case FT_RENDER_MODE_LCD_V:

1356

if (font_options->subpixel_order == CAIRO_SUBPIXEL_ORDER_VBGR) {

1357

rgba = FC_RGBA_VBGR4;

1358

} else {

1359

rgba = FC_RGBA_VRGB3;

1360

}

1361

break;

1362

case FT_RENDER_MODE_MONO:

1363

case FT_RENDER_MODE_LIGHT:

1364

case FT_RENDER_MODE_NORMAL:

1365

case FT_RENDER_MODE_MAX:

1366

default:

1367

break;

1368

}

1369

1370

if (!initialized_setLcdFilter) {

1371

initialized_setLcdFilter = 1;

1372

#ifdef HAVE_FT_LIBRARY_SETLCDFILTER

1373

setLcdFilter = &FT_Library_SetLcdFilter;

1374

#else

1375

setLcdFilter = (setLcdFilterFunc) dlsym(RTLD_DEFAULT((void *) 0), "FT_Library_SetLcdFilter");

1376

#endif

1377

}

1378

1379

if (setLcdFilter)

1380

setLcdFilter (library, lcd_filter);

1381

1382

fterror = FT_Render_Glyph (face->glyph, render_mode);

1383

1384

if (setLcdFilter)

1385

setLcdFilter (library, FT_LCD_FILTER_NONE0);

1386

1387

if (fterror != 0)

1388

return _cairo_error (CAIRO_STATUS_NO_MEMORY);

1389

1390

bitmap_size = _compute_xrender_bitmap_size (&bitmap,

1391

face->glyph,

1392

render_mode);

1393

if (bitmap_size < 0)

1394

return _cairo_error (CAIRO_STATUS_NO_MEMORY);

1395

1396

bitmap.buffer = calloc (1, bitmap_size);

1397

if (bitmap.buffer == NULL((void*)0))

1398

return _cairo_error (CAIRO_STATUS_NO_MEMORY);

1399

1400

_fill_xrender_bitmap (&bitmap, face->glyph, render_mode,

1401

(rgba == FC_RGBA_BGR2 || rgba == FC_RGBA_VBGR4));

1402

1403

/* Note:

1404

* _get_bitmap_surface will free bitmap.buffer if there is an error

1405

1406

status = _get_bitmap_surface (&bitmap, TRUE1, font_options, surface);

1407

if (unlikely (status)(__builtin_expect (__extension__ ({ int _cairo_boolean_var_; if
(status) _cairo_boolean_var_ = 1; else _cairo_boolean_var_ =
0; _cairo_boolean_var_; }), 0)))

1408

return status;

1409

1410

/* Note: the font's coordinate system is upside down from ours, so the

1411

* Y coordinate of the control box needs to be negated. Moreover, device

1412

* offsets are position of glyph origin relative to top left while xMin

1413

* and yMax are offsets of top left relative to origin. Another negation.

1414

1415

cairo_surface_set_device_offset_moz_cairo_surface_set_device_offset (&(*surface)->base,

1416

(double)-glyphslot->bitmap_left,

1417

(double)+glyphslot->bitmap_top);

1418

}

1419

1420

return CAIRO_STATUS_SUCCESS;

1421

}

1422

1423

/* Converts a bitmap (or other) FT_GlyphSlot into an image */

1424

static cairo_status_t

1425

_render_glyph_bitmap (FT_Face face,

1426

cairo_font_options_t *font_options,

1427

cairo_image_surface_t **surface)

1428

{

1429

FT_GlyphSlot glyphslot = face->glyph;

1430

cairo_status_t status;

1431

FT_Error error;

1432

1433

/* According to the FreeType docs, glyphslot->format could be

1434

* something other than FT_GLYPH_FORMAT_OUTLINE or

1435

* FT_GLYPH_FORMAT_BITMAP. Calling FT_Render_Glyph gives FreeType

1436

* the opportunity to convert such to

1437

* bitmap. FT_GLYPH_FORMAT_COMPOSITE will not be encountered since

1438

* we avoid the FT_LOAD_NO_RECURSE flag.

1439

1440

error = FT_Render_Glyph (glyphslot, FT_RENDER_MODE_NORMAL);

1441

/* XXX ignoring all other errors for now. They are not fatal, typically

1442

* just a glyph-not-found. */

1443

if (error == FT_Err_Out_Of_Memory)

1444

return _cairo_error (CAIRO_STATUS_NO_MEMORY);

1445

1446

status = _get_bitmap_surface (&glyphslot->bitmap,

1447

FALSE0, font_options,

1448

surface);

1449

if (unlikely (status)(__builtin_expect (__extension__ ({ int _cairo_boolean_var_; if
(status) _cairo_boolean_var_ = 1; else _cairo_boolean_var_ =
0; _cairo_boolean_var_; }), 0)))

1450

return status;

1451

1452

1453

* Note: the font's coordinate system is upside down from ours, so the

1454

* Y coordinate of the control box needs to be negated. Moreover, device

1455

* offsets are position of glyph origin relative to top left while

1456

* bitmap_left and bitmap_top are offsets of top left relative to origin.

1457

* Another negation.

1458

1459

cairo_surface_set_device_offset_moz_cairo_surface_set_device_offset (&(*surface)->base,

1460

-glyphslot->bitmap_left,

1461

+glyphslot->bitmap_top);

1462

1463

return CAIRO_STATUS_SUCCESS;

1464

}

1465

1466

static cairo_status_t

1467

_transform_glyph_bitmap (cairo_matrix_t * shape,

1468

cairo_image_surface_t ** surface)

1469

{

1470

cairo_matrix_t original_to_transformed;

1471

cairo_matrix_t transformed_to_original;

1472

cairo_image_surface_t *old_image;

1473

cairo_surface_t *image;

1474

double x[4], y[4];

1475

double origin_x, origin_y;

1476

int orig_width, orig_height;

1477

int i;

1478

int x_min, y_min, x_max, y_max;

1479

int width, height;

1480

cairo_status_t status;

1481

cairo_surface_pattern_t pattern;

1482

1483

/* We want to compute a transform that takes the origin

1484

* (device_x_offset, device_y_offset) to 0,0, then applies

1485

* the "shape" portion of the font transform

1486

1487

original_to_transformed = *shape;

1488

1489

cairo_surface_get_device_offset_moz_cairo_surface_get_device_offset (&(*surface)->base, &origin_x, &origin_y);

1490

orig_width = (*surface)->width;

1491

orig_height = (*surface)->height;

1492

1493

cairo_matrix_translate_moz_cairo_matrix_translate (&original_to_transformed,

1494

-origin_x, -origin_y);

1495

1496

/* Find the bounding box of the original bitmap under that

1497

* transform

1498

1499

x[0] = 0; y[0] = 0;

1500

x[1] = orig_width; y[1] = 0;

1501

x[2] = orig_width; y[2] = orig_height;

1502

x[3] = 0; y[3] = orig_height;

1503

1504

for (i = 0; i < 4; i++)

1505

cairo_matrix_transform_point_moz_cairo_matrix_transform_point (&original_to_transformed,

1506

&x[i], &y[i]);

1507

1508

x_min = floor (x[0]); y_min = floor (y[0]);

1509

x_max = ceil (x[0]); y_max = ceil (y[0]);

1510

1511

for (i = 1; i < 4; i++) {

1512

if (x[i] < x_min)

1513

x_min = floor (x[i]);

1514

else if (x[i] > x_max)

1515

x_max = ceil (x[i]);

1516

if (y[i] < y_min)

1517

y_min = floor (y[i]);

1518

else if (y[i] > y_max)

1519

y_max = ceil (y[i]);

1520

}

1521

1522

/* Adjust the transform so that the bounding box starts at 0,0 ...

1523

* this gives our final transform from original bitmap to transformed

1524

* bitmap.

1525

1526

original_to_transformed.x0 -= x_min;

1527

original_to_transformed.y0 -= y_min;

1528

1529

/* Create the transformed bitmap */

1530

width = x_max - x_min;

1531

height = y_max - y_min;

1532

1533

transformed_to_original = original_to_transformed;

1534

status = cairo_matrix_invert_moz_cairo_matrix_invert (&transformed_to_original);

1535

if (unlikely (status)(__builtin_expect (__extension__ ({ int _cairo_boolean_var_; if
(status) _cairo_boolean_var_ = 1; else _cairo_boolean_var_ =
0; _cairo_boolean_var_; }), 0)))

1536

return status;

1537

1538

image = cairo_image_surface_create_moz_cairo_image_surface_create (CAIRO_FORMAT_A8, width, height);

1539

if (unlikely (image->status)(__builtin_expect (__extension__ ({ int _cairo_boolean_var_; if
(image->status) _cairo_boolean_var_ = 1; else _cairo_boolean_var_
= 0; _cairo_boolean_var_; }), 0)))

1540

return image->status;

1541

1542

/* Draw the original bitmap transformed into the new bitmap

1543

1544

_cairo_pattern_init_for_surface (&pattern, &(*surface)->base);

1545

cairo_pattern_set_matrix_moz_cairo_pattern_set_matrix (&pattern.base, &transformed_to_original);

1546

1547

status = _cairo_surface_paint (image,

1548

CAIRO_OPERATOR_SOURCE,

1549

&pattern.base,

1550

NULL((void*)0));

1551

1552

_cairo_pattern_fini (&pattern.base);

1553

1554

if (unlikely (status)(__builtin_expect (__extension__ ({ int _cairo_boolean_var_; if
(status) _cairo_boolean_var_ = 1; else _cairo_boolean_var_ =
0; _cairo_boolean_var_; }), 0))) {

1555

cairo_surface_destroy_moz_cairo_surface_destroy (image);

1556

return status;

1557

}

1558

1559

/* Now update the cache entry for the new bitmap, recomputing

1560

* the origin based on the final transform.

1561

1562

cairo_matrix_transform_point_moz_cairo_matrix_transform_point (&original_to_transformed,

1563

&origin_x, &origin_y);

1564

1565

old_image = (*surface);

1566

(*surface) = (cairo_image_surface_t *)image;

1567

cairo_surface_destroy_moz_cairo_surface_destroy (&old_image->base);

1568

1569

cairo_surface_set_device_offset_moz_cairo_surface_set_device_offset (&(*surface)->base,

1570

_cairo_lroundlround (origin_x),

1571

_cairo_lroundlround (origin_y));

1572

return CAIRO_STATUS_SUCCESS;

1573

}

1574

1575

static const cairo_unscaled_font_backend_t cairo_ft_unscaled_font_backend = {

1576

_cairo_ft_unscaled_font_destroy,

1577

#if 0

1578

_cairo_ft_unscaled_font_create_glyph

1579

#endif

1580

};

1581

1582

/* #cairo_ft_scaled_font_t */

1583

1584

typedef struct _cairo_ft_scaled_font {

1585

cairo_scaled_font_t base;

1586

cairo_ft_unscaled_font_t *unscaled;

1587

cairo_ft_options_t ft_options;

1588

} cairo_ft_scaled_font_t;

1589

1590

static const cairo_scaled_font_backend_t _cairo_ft_scaled_font_backend;

1591

1592

#if CAIRO_HAS_FC_FONT1

1593

/* The load flags passed to FT_Load_Glyph control aspects like hinting and

1594

* antialiasing. Here we compute them from the fields of a FcPattern.

1595

1596

static void

1597

_get_pattern_ft_options (FcPattern *pattern, cairo_ft_options_t *ret)

1598

{

1599

FcBool antialias, vertical_layout, hinting, autohint, bitmap, embolden;

1600

cairo_ft_options_t ft_options;

1601

int rgba;

1602

#ifdef FC_HINT_STYLE"hintstyle"

1603

int hintstyle;

1604

#endif

1605

1606

_cairo_font_options_init_default (&ft_options.base);

1607

ft_options.load_flags = FT_LOAD_DEFAULT0x0;

1608

ft_options.extra_flags = 0;

1609

1610

#ifndef FC_EMBEDDED_BITMAP"embeddedbitmap"

1611

#define FC_EMBEDDED_BITMAP"embeddedbitmap" "embeddedbitmap"

1612

#endif

1613

1614

/* Check whether to force use of embedded bitmaps */

1615

if (FcPatternGetBool (pattern,

1616

FC_EMBEDDED_BITMAP"embeddedbitmap", 0, &bitmap) != FcResultMatch)

1617

bitmap = FcFalse0;

1618

1619

/* disable antialiasing if requested */

1620

if (FcPatternGetBool (pattern,

1621

FC_ANTIALIAS"antialias", 0, &antialias) != FcResultMatch)

1622

antialias = FcTrue1;

1623

1624

if (antialias) {

1625

cairo_subpixel_order_t subpixel_order;

1626

int lcd_filter;

1627

1628

/* disable hinting if requested */

1629

if (FcPatternGetBool (pattern,

1630

FC_HINTING"hinting", 0, &hinting) != FcResultMatch)

1631

hinting = FcTrue1;

1632

1633

if (FcPatternGetInteger (pattern,

1634

FC_RGBA"rgba", 0, &rgba) != FcResultMatch)

1635

rgba = FC_RGBA_UNKNOWN0;

1636

1637

switch (rgba) {

1638

case FC_RGBA_RGB1:

1639

subpixel_order = CAIRO_SUBPIXEL_ORDER_RGB;

1640

break;

1641

case FC_RGBA_BGR2:

1642

subpixel_order = CAIRO_SUBPIXEL_ORDER_BGR;

1643

break;

1644

case FC_RGBA_VRGB3:

1645

subpixel_order = CAIRO_SUBPIXEL_ORDER_VRGB;

1646

break;

1647

case FC_RGBA_VBGR4:

1648

subpixel_order = CAIRO_SUBPIXEL_ORDER_VBGR;

1649

break;

1650

case FC_RGBA_UNKNOWN0:

1651

case FC_RGBA_NONE5:

1652

default:

1653

subpixel_order = CAIRO_SUBPIXEL_ORDER_DEFAULT;

1654

break;

1655

}

1656

1657

if (subpixel_order != CAIRO_SUBPIXEL_ORDER_DEFAULT) {

1658

ft_options.base.subpixel_order = subpixel_order;

1659

ft_options.base.antialias = CAIRO_ANTIALIAS_SUBPIXEL;

1660

}

1661

1662

if (FcPatternGetInteger (pattern,

1663

FC_LCD_FILTER"lcdfilter", 0, &lcd_filter) == FcResultMatch)

1664

{

1665

switch (lcd_filter) {

1666

case FC_LCD_NONE0:

1667

ft_options.base.lcd_filter = CAIRO_LCD_FILTER_NONE;

1668

break;

1669

case FC_LCD_DEFAULT1:

1670

ft_options.base.lcd_filter = CAIRO_LCD_FILTER_FIR5;

1671

break;

1672

case FC_LCD_LIGHT2:

1673

ft_options.base.lcd_filter = CAIRO_LCD_FILTER_FIR3;

1674

break;

1675

case FC_LCD_LEGACY3:

1676

ft_options.base.lcd_filter = CAIRO_LCD_FILTER_INTRA_PIXEL;

1677

break;

1678

}

1679

}

1680

1681

#ifdef FC_HINT_STYLE"hintstyle"

1682

if (FcPatternGetInteger (pattern,

1683

FC_HINT_STYLE"hintstyle", 0, &hintstyle) != FcResultMatch)

1684

hintstyle = FC_HINT_FULL3;

1685

1686

if (!hinting)

1687

hintstyle = FC_HINT_NONE0;

1688

1689

switch (hintstyle) {

1690

case FC_HINT_NONE0:

1691

ft_options.base.hint_style = CAIRO_HINT_STYLE_NONE;

1692

break;

1693

case FC_HINT_SLIGHT1:

1694

ft_options.base.hint_style = CAIRO_HINT_STYLE_SLIGHT;

1695

break;

1696

case FC_HINT_MEDIUM2:

1697

default:

1698

ft_options.base.hint_style = CAIRO_HINT_STYLE_MEDIUM;

1699

break;

1700

case FC_HINT_FULL3:

1701

ft_options.base.hint_style = CAIRO_HINT_STYLE_FULL;

1702

break;

1703

}

1704

#else /* !FC_HINT_STYLE */

1705

if (!hinting) {

1706

ft_options.base.hint_style = CAIRO_HINT_STYLE_NONE;

1707

}

1708

#endif /* FC_HINT_STYLE */

1709

1710

/* Force embedded bitmaps off if no hinting requested */

1711

if (ft_options.base.hint_style == CAIRO_HINT_STYLE_NONE)

1712

bitmap = FcFalse0;

1713

1714

if (!bitmap)

1715

ft_options.load_flags |= FT_LOAD_NO_BITMAP( 1L << 3 );

1716

1717

} else {

1718

ft_options.base.antialias = CAIRO_ANTIALIAS_NONE;

1719

}

1720

1721

/* force autohinting if requested */

1722

if (FcPatternGetBool (pattern,

1723

FC_AUTOHINT"autohint", 0, &autohint) != FcResultMatch)

1724

autohint = FcFalse0;

1725

1726

if (autohint)

1727

ft_options.load_flags |= FT_LOAD_FORCE_AUTOHINT( 1L << 5 );

1728

1729

if (FcPatternGetBool (pattern,

1730

FC_VERTICAL_LAYOUT"verticallayout", 0, &vertical_layout) != FcResultMatch)

1731

vertical_layout = FcFalse0;

1732

1733

if (vertical_layout)

1734

ft_options.load_flags |= FT_LOAD_VERTICAL_LAYOUT( 1L << 4 );

1735

1736

#ifndef FC_EMBOLDEN"embolden"

1737

#define FC_EMBOLDEN"embolden" "embolden"

1738

#endif

1739

if (FcPatternGetBool (pattern,

1740

FC_EMBOLDEN"embolden", 0, &embolden) != FcResultMatch)

1741

embolden = FcFalse0;

1742

1743

if (embolden)

1744

ft_options.extra_flags |= CAIRO_FT_OPTIONS_EMBOLDEN;

1745

1746

*ret = ft_options;

1747

}

1748

#endif

1749

1750

static void

1751

_cairo_ft_options_merge (cairo_ft_options_t *options,

1752

cairo_ft_options_t *other)

1753

{

1754

int load_flags = other->load_flags;

1755

int load_target = FT_LOAD_TARGET_NORMAL( (FT_Int32)( (FT_RENDER_MODE_NORMAL) & 15 ) << 16 );

1756

1757

/* clear load target mode */

1758

load_flags &= ~(FT_LOAD_TARGET_(FT_LOAD_TARGET_MODE(other->load_flags))( (FT_Int32)( (( (FT_Render_Mode)( ( (other->load_flags) >>
16 ) & 15 ) )) & 15 ) << 16 ));

1759

1760

if (load_flags & FT_LOAD_NO_HINTING( 1L << 1 ))

1761

other->base.hint_style = CAIRO_HINT_STYLE_NONE;

1762

1763

if (other->base.antialias == CAIRO_ANTIALIAS_NONE ||

1764

options->base.antialias == CAIRO_ANTIALIAS_NONE) {

1765

options->base.antialias = CAIRO_ANTIALIAS_NONE;

1766

options->base.subpixel_order = CAIRO_SUBPIXEL_ORDER_DEFAULT;

1767

} else if (options->base.antialias != CAIRO_ANTIALIAS_GRAY) {

1768

/* The surface supports subpixel aa, so let the font face options

1769

* choose whether to use subpixel aa. If the surface has

1770

* CAIRO_ANTIALIAS_GRAY (e.g. PS, PDF, SVG, translucent part of a

1771

* CONTENT_COLOR_ALPHA surface), then don't accept subpixel aa. */

1772

if (other->base.antialias != CAIRO_ANTIALIAS_DEFAULT)

1773

options->base.antialias = other->base.antialias;

1774

/* If the surface knows the subpixel order then use that. */

1775

if (options->base.subpixel_order == CAIRO_SUBPIXEL_ORDER_DEFAULT)

1776

options->base.subpixel_order = other->base.subpixel_order;

1777

}

1778

1779

if (options->base.hint_style == CAIRO_HINT_STYLE_DEFAULT)

1780

options->base.hint_style = other->base.hint_style;

1781

1782

if (other->base.hint_style == CAIRO_HINT_STYLE_NONE)

1783

options->base.hint_style = CAIRO_HINT_STYLE_NONE;

1784

1785

if (options->base.lcd_filter == CAIRO_LCD_FILTER_DEFAULT)

1786

options->base.lcd_filter = other->base.lcd_filter;

1787

1788

if (other->base.lcd_filter == CAIRO_LCD_FILTER_NONE)

1789

options->base.lcd_filter = CAIRO_LCD_FILTER_NONE;

1790

1791

if (options->base.antialias == CAIRO_ANTIALIAS_NONE) {

1792

if (options->base.hint_style == CAIRO_HINT_STYLE_NONE)

1793

load_flags |= FT_LOAD_NO_HINTING( 1L << 1 );

1794

else

1795

load_target = FT_LOAD_TARGET_MONO( (FT_Int32)( (FT_RENDER_MODE_MONO) & 15 ) << 16 );

1796

load_flags |= FT_LOAD_MONOCHROME( 1L << 12 );

1797

} else {

1798

switch (options->base.hint_style) {

1799

case CAIRO_HINT_STYLE_NONE:

1800

load_flags |= FT_LOAD_NO_HINTING( 1L << 1 );

1801

break;

1802

case CAIRO_HINT_STYLE_SLIGHT:

1803

load_target = FT_LOAD_TARGET_LIGHT( (FT_Int32)( (FT_RENDER_MODE_LIGHT) & 15 ) << 16 );

1804

break;

1805

case CAIRO_HINT_STYLE_MEDIUM:

1806

break;

1807

case CAIRO_HINT_STYLE_FULL:

1808

case CAIRO_HINT_STYLE_DEFAULT:

1809

if (options->base.antialias == CAIRO_ANTIALIAS_SUBPIXEL) {

1810

switch (options->base.subpixel_order) {

1811

case CAIRO_SUBPIXEL_ORDER_DEFAULT:

1812

case CAIRO_SUBPIXEL_ORDER_RGB:

1813

case CAIRO_SUBPIXEL_ORDER_BGR:

1814

load_target = FT_LOAD_TARGET_LCD( (FT_Int32)( (FT_RENDER_MODE_LCD) & 15 ) << 16 );

1815

break;

1816

case CAIRO_SUBPIXEL_ORDER_VRGB:

1817

case CAIRO_SUBPIXEL_ORDER_VBGR:

1818

load_target = FT_LOAD_TARGET_LCD_V( (FT_Int32)( (FT_RENDER_MODE_LCD_V) & 15 ) << 16 );

1819

break;

1820

}

1821

}

1822

break;

1823

}

1824

}

1825

1826

options->load_flags = load_flags | load_target;

1827

options->extra_flags = other->extra_flags;

1828

if (options->base.hint_metrics != CAIRO_HINT_METRICS_OFF)

1829

options->extra_flags |= CAIRO_FT_OPTIONS_HINT_METRICS;

1830

}

1831

1832

static cairo_status_t

1833

_cairo_ft_font_face_scaled_font_create (void *abstract_font_face,

1834

const cairo_matrix_t *font_matrix,

1835

const cairo_matrix_t *ctm,

1836

const cairo_font_options_t *options,

1837

cairo_scaled_font_t **font_out)

1838

{

1839

cairo_ft_font_face_t *font_face = abstract_font_face;

1840

cairo_ft_scaled_font_t *scaled_font;

1841

FT_Face face;

1842

FT_Size_Metrics *metrics;

1843

cairo_font_extents_t fs_metrics;

1844

cairo_status_t status;

1845

cairo_ft_unscaled_font_t *unscaled;

1846

1847

assert (font_face->unscaled)do { if (!(font_face->unscaled)) fprintf(stderr, "Assertion failed at %s:%d: %s\n"
, "/home/sylvestre/dev/mozilla/ff/firefox.hg/gfx/cairo/cairo/src/cairo-ft-font.c"
, 1847, "font_face->unscaled"); } while (0);

1848

1849

face = _cairo_ft_unscaled_font_lock_face (font_face->unscaled);

1850

if (unlikely (face == NULL)(__builtin_expect (__extension__ ({ int _cairo_boolean_var_; if
(face == ((void*)0)) _cairo_boolean_var_ = 1; else _cairo_boolean_var_
= 0; _cairo_boolean_var_; }), 0))) /* backend error */

1851

return _cairo_error (CAIRO_STATUS_NO_MEMORY);

1852

1853

scaled_font = malloc (sizeof (cairo_ft_scaled_font_t));

1854

if (unlikely (scaled_font == NULL)(__builtin_expect (__extension__ ({ int _cairo_boolean_var_; if
(scaled_font == ((void*)0)) _cairo_boolean_var_ = 1; else _cairo_boolean_var_
= 0; _cairo_boolean_var_; }), 0))) {

1855

status = _cairo_error (CAIRO_STATUS_NO_MEMORY);

1856

goto FAIL;

1857

}

1858

1859

scaled_font->unscaled = unscaled = font_face->unscaled;

1860

_cairo_unscaled_font_reference (&unscaled->base);

1861

1862

_cairo_font_options_init_copy (&scaled_font->ft_options.base, options);

1863

_cairo_ft_options_merge (&scaled_font->ft_options, &font_face->ft_options);

1864

1865

status = _cairo_scaled_font_init (&scaled_font->base,

1866

&font_face->base,

1867

font_matrix, ctm, options,

1868

&_cairo_ft_scaled_font_backend);

1869

if (unlikely (status)(__builtin_expect (__extension__ ({ int _cairo_boolean_var_; if
(status) _cairo_boolean_var_ = 1; else _cairo_boolean_var_ =
0; _cairo_boolean_var_; }), 0)))

1870

goto CLEANUP_SCALED_FONT;

1871

1872

status = _cairo_ft_unscaled_font_set_scale (unscaled,

1873

&scaled_font->base.scale);

1874

if (unlikely (status)(__builtin_expect (__extension__ ({ int _cairo_boolean_var_; if
(status) _cairo_boolean_var_ = 1; else _cairo_boolean_var_ =
0; _cairo_boolean_var_; }), 0))) {

1875

/* This can only fail if we encounter an error with the underlying

1876

* font, so propagate the error back to the font-face. */

1877

_cairo_ft_unscaled_font_unlock_face (unscaled);

1878

_cairo_unscaled_font_destroy (&unscaled->base);

1879

free (scaled_font);

1880

return status;

1881

}

1882

1883

1884

metrics = &face->size->metrics;

1885

1886

1887

* Get to unscaled metrics so that the upper level can get back to

1888

* user space

1889

1890

* Also use this path for bitmap-only fonts. The other branch uses

1891

* face members that are only relevant for scalable fonts. This is

1892

* detected by simply checking for units_per_EM==0.

1893

1894

if (scaled_font->base.options.hint_metrics != CAIRO_HINT_METRICS_OFF ||

1895

face->units_per_EM == 0) {

1896

double x_factor, y_factor;

1897

1898

if (unscaled->x_scale == 0)

1899

x_factor = 0;

1900

else

1901

x_factor = 1 / unscaled->x_scale;

1902

1903

if (unscaled->y_scale == 0)

1904

y_factor = 0;

1905

else

1906

y_factor = 1 / unscaled->y_scale;

1907

1908

fs_metrics.ascent = DOUBLE_FROM_26_6(metrics->ascender)((double)(metrics->ascender) / 64.0) * y_factor;

1909

fs_metrics.descent = DOUBLE_FROM_26_6(- metrics->descender)((double)(- metrics->descender) / 64.0) * y_factor;

1910

fs_metrics.height = DOUBLE_FROM_26_6(metrics->height)((double)(metrics->height) / 64.0) * y_factor;

1911

if (!_cairo_ft_scaled_font_is_vertical (&scaled_font->base)) {

1912

fs_metrics.max_x_advance = DOUBLE_FROM_26_6(metrics->max_advance)((double)(metrics->max_advance) / 64.0) * x_factor;

1913

fs_metrics.max_y_advance = 0;

1914

} else {

1915

fs_metrics.max_x_advance = 0;

1916

fs_metrics.max_y_advance = DOUBLE_FROM_26_6(metrics->max_advance)((double)(metrics->max_advance) / 64.0) * y_factor;

1917

}

1918

} else {

1919

double scale = face->units_per_EM;

1920

1921

fs_metrics.ascent = face->ascender / scale;

1922

fs_metrics.descent = - face->descender / scale;

1923

fs_metrics.height = face->height / scale;

1924

if (!_cairo_ft_scaled_font_is_vertical (&scaled_font->base)) {

1925

fs_metrics.max_x_advance = face->max_advance_width / scale;

1926

fs_metrics.max_y_advance = 0;

1927

} else {

1928

fs_metrics.max_x_advance = 0;

1929

fs_metrics.max_y_advance = face->max_advance_height / scale;

1930

}

1931

}

1932

1933

status = _cairo_scaled_font_set_metrics (&scaled_font->base, &fs_metrics);

1934

if (unlikely (status)(__builtin_expect (__extension__ ({ int _cairo_boolean_var_; if
(status) _cairo_boolean_var_ = 1; else _cairo_boolean_var_ =
0; _cairo_boolean_var_; }), 0)))

1935

goto CLEANUP_SCALED_FONT;

1936

1937

_cairo_ft_unscaled_font_unlock_face (unscaled);

1938

1939

*font_out = &scaled_font->base;

1940

return CAIRO_STATUS_SUCCESS;

1941

1942

CLEANUP_SCALED_FONT:

1943

_cairo_unscaled_font_destroy (&unscaled->base);

1944

free (scaled_font);

1945

FAIL:

1946

_cairo_ft_unscaled_font_unlock_face (font_face->unscaled);

1947

*font_out = _cairo_scaled_font_create_in_error (status);

1948

return CAIRO_STATUS_SUCCESS; /* non-backend error */

1949

}

1950

1951

cairo_bool_t

1952

_cairo_scaled_font_is_ft (cairo_scaled_font_t *scaled_font)

1953

{

1954

return scaled_font->backend == &_cairo_ft_scaled_font_backend;

1955

}

1956

1957

static void

1958

_cairo_ft_scaled_font_fini (void *abstract_font)

1959

{

1960

cairo_ft_scaled_font_t *scaled_font = abstract_font;

1961

1962

if (scaled_font == NULL((void*)0))

1963

return;

1964

1965

_cairo_unscaled_font_destroy (&scaled_font->unscaled->base);

1966

}

1967

1968

static int

1969

_move_to (FT_Vector *to, void *closure)

1970

{

1971

cairo_path_fixed_t *path = closure;

1972

cairo_fixed_t x, y;

1973

1974

x = _cairo_fixed_from_26_6 (to->x);

1975

y = _cairo_fixed_from_26_6 (to->y);

1976

1977

if (_cairo_path_fixed_close_path (path) != CAIRO_STATUS_SUCCESS)

1978

return 1;

1979

if (_cairo_path_fixed_move_to (path, x, y) != CAIRO_STATUS_SUCCESS)

1980

return 1;

1981

1982

return 0;

1983

}

1984

1985

static int

1986

_line_to (FT_Vector *to, void *closure)

1987

{

1988

cairo_path_fixed_t *path = closure;

1989

cairo_fixed_t x, y;

1990

1991

x = _cairo_fixed_from_26_6 (to->x);

1992

y = _cairo_fixed_from_26_6 (to->y);

1993

1994

if (_cairo_path_fixed_line_to (path, x, y) != CAIRO_STATUS_SUCCESS)

1995

return 1;

1996

1997

return 0;

1998

}

1999

2000

static int

2001

_conic_to (FT_Vector *control, FT_Vector *to, void *closure)

2002

{

2003

cairo_path_fixed_t *path = closure;

2004

2005

cairo_fixed_t x0, y0;

2006

cairo_fixed_t x1, y1;

2007

cairo_fixed_t x2, y2;

2008

cairo_fixed_t x3, y3;

2009

cairo_point_t conic;

2010

2011

if (! _cairo_path_fixed_get_current_point (path, &x0, &y0))

2012

return 1;

2013

2014

conic.x = _cairo_fixed_from_26_6 (control->x);

2015

conic.y = _cairo_fixed_from_26_6 (control->y);

2016

2017

x3 = _cairo_fixed_from_26_6 (to->x);

2018

y3 = _cairo_fixed_from_26_6 (to->y);

2019

2020

x1 = x0 + 2.0/3.0 * (conic.x - x0);

2021

y1 = y0 + 2.0/3.0 * (conic.y - y0);

2022

2023

x2 = x3 + 2.0/3.0 * (conic.x - x3);

2024

y2 = y3 + 2.0/3.0 * (conic.y - y3);

2025

2026

if (_cairo_path_fixed_curve_to (path,

2027

x1, y1,

2028

x2, y2,

2029

x3, y3) != CAIRO_STATUS_SUCCESS)

2030

return 1;

2031

2032

return 0;

2033

}

2034

2035

static int

2036

_cubic_to (FT_Vector *control1, FT_Vector *control2,

2037

FT_Vector *to, void *closure)

2038

{

2039

cairo_path_fixed_t *path = closure;

2040

cairo_fixed_t x0, y0;

2041

cairo_fixed_t x1, y1;

2042

cairo_fixed_t x2, y2;

2043

2044

x0 = _cairo_fixed_from_26_6 (control1->x);

2045

y0 = _cairo_fixed_from_26_6 (control1->y);

2046

2047

x1 = _cairo_fixed_from_26_6 (control2->x);

2048

y1 = _cairo_fixed_from_26_6 (control2->y);

2049

2050

x2 = _cairo_fixed_from_26_6 (to->x);

2051

y2 = _cairo_fixed_from_26_6 (to->y);

2052

2053

if (_cairo_path_fixed_curve_to (path,

2054

x0, y0,

2055

x1, y1,

2056

x2, y2) != CAIRO_STATUS_SUCCESS)

2057

return 1;

2058

2059

return 0;

2060

}

2061

2062

static cairo_status_t

2063

_decompose_glyph_outline (FT_Face face,

2064

cairo_font_options_t *options,

2065

cairo_path_fixed_t **pathp)

2066

{

2067

static const FT_Outline_Funcs outline_funcs = {

2068

(FT_Outline_MoveToFunc)_move_to,

2069

(FT_Outline_LineToFunc)_line_to,

2070

(FT_Outline_ConicToFunc)_conic_to,

2071

(FT_Outline_CubicToFunc)_cubic_to,

2072

0, /* shift */

2073

0, /* delta */

2074

};

2075

static const FT_Matrix invert_y = {

2076

DOUBLE_TO_16_16 (1.0)((FT_Fixed)((1.0) * 65536.0)), 0,

2077

0, DOUBLE_TO_16_16 (-1.0)((FT_Fixed)((-1.0) * 65536.0)),

2078

};

2079

2080

FT_GlyphSlot glyph;

2081

cairo_path_fixed_t *path;

2082

cairo_status_t status;

2083

2084

path = _cairo_path_fixed_create ();

2085

if (!path)

2086

return _cairo_error (CAIRO_STATUS_NO_MEMORY);

2087

2088

glyph = face->glyph;

2089

2090

/* Font glyphs have an inverted Y axis compared to cairo. */

2091

FT_Outline_Transform (&glyph->outline, &invert_y);

2092

if (FT_Outline_Decompose (&glyph->outline, &outline_funcs, path)) {

2093

_cairo_path_fixed_destroy (path);

2094

return _cairo_error (CAIRO_STATUS_NO_MEMORY);

2095

}

2096

2097

status = _cairo_path_fixed_close_path (path);

2098

if (unlikely (status)(__builtin_expect (__extension__ ({ int _cairo_boolean_var_; if
(status) _cairo_boolean_var_ = 1; else _cairo_boolean_var_ =
0; _cairo_boolean_var_; }), 0))) {

2099

_cairo_path_fixed_destroy (path);

2100

return status;

2101

}

2102

2103

*pathp = path;

2104

2105

return CAIRO_STATUS_SUCCESS;

2106

}

2107

2108

2109

* Translate glyph to match its metrics.

2110

2111

static void

2112

_cairo_ft_scaled_glyph_vertical_layout_bearing_fix (void *abstract_font,

2113

FT_GlyphSlot glyph)

2114

{

2115

cairo_ft_scaled_font_t *scaled_font = abstract_font;

2116

FT_Vector vector;

2117

2118

vector.x = glyph->metrics.vertBearingX - glyph->metrics.horiBearingX;

2119

vector.y = -glyph->metrics.vertBearingY - glyph->metrics.horiBearingY;

2120

2121

if (glyph->format == FT_GLYPH_FORMAT_OUTLINE) {

2122

FT_Vector_Transform (&vector, &scaled_font->unscaled->Current_Shape);

2123

FT_Outline_Translate(&glyph->outline, vector.x, vector.y);

2124

} else if (glyph->format == FT_GLYPH_FORMAT_BITMAP) {

2125

glyph->bitmap_left += vector.x / 64;

2126

glyph->bitmap_top += vector.y / 64;

2127

}

2128

}

2129

2130

static cairo_int_status_t

2131

_cairo_ft_scaled_glyph_init (void *abstract_font,

2132

cairo_scaled_glyph_t *scaled_glyph,

2133

cairo_scaled_glyph_info_t info)

2134

{

2135

cairo_text_extents_t fs_metrics;

2136

cairo_ft_scaled_font_t *scaled_font = abstract_font;

2137

cairo_ft_unscaled_font_t *unscaled = scaled_font->unscaled;

2138

FT_GlyphSlot glyph;

2139

FT_Face face;

2140

FT_Error error;

2141

int load_flags = scaled_font->ft_options.load_flags;

2142

FT_Glyph_Metrics *metrics;

2143

double x_factor, y_factor;

2144

cairo_bool_t vertical_layout = FALSE0;

2145

cairo_status_t status;

2146

2147

face = _cairo_ft_unscaled_font_lock_face (unscaled);

2148

if (!face)

2149

return _cairo_error (CAIRO_STATUS_NO_MEMORY);

2150

2151

status = _cairo_ft_unscaled_font_set_scale (scaled_font->unscaled,

2152

&scaled_font->base.scale);

2153

if (unlikely (status)(__builtin_expect (__extension__ ({ int _cairo_boolean_var_; if
(status) _cairo_boolean_var_ = 1; else _cairo_boolean_var_ =
0; _cairo_boolean_var_; }), 0)))

2154

goto FAIL;

2155

2156

/* Ignore global advance unconditionally */

2157

load_flags |= FT_LOAD_IGNORE_GLOBAL_ADVANCE_WIDTH( 1L << 9 );

2158

2159

if ((info & CAIRO_SCALED_GLYPH_INFO_PATH) != 0 &&

2160

(info & CAIRO_SCALED_GLYPH_INFO_SURFACE) == 0)

2161

load_flags |= FT_LOAD_NO_BITMAP( 1L << 3 );

2162

2163

2164

* Don't pass FT_LOAD_VERTICAL_LAYOUT to FT_Load_Glyph here as

2165

* suggested by freetype people.

2166

2167

if (load_flags & FT_LOAD_VERTICAL_LAYOUT( 1L << 4 )) {

2168

load_flags &= ~FT_LOAD_VERTICAL_LAYOUT( 1L << 4 );

2169

vertical_layout = TRUE1;

2170

}

2171

2172

error = FT_Load_Glyph (scaled_font->unscaled->face,

2173

_cairo_scaled_glyph_index(scaled_glyph)((scaled_glyph)->hash_entry.hash),

2174

load_flags);

2175

/* XXX ignoring all other errors for now. They are not fatal, typically

2176

* just a glyph-not-found. */

2177

if (error == FT_Err_Out_Of_Memory) {

2178

status = _cairo_error (CAIRO_STATUS_NO_MEMORY);

2179

goto FAIL;

2180

}

2181

2182

glyph = face->glyph;

2183

2184

#if HAVE_FT_GLYPHSLOT_EMBOLDEN1

2185

2186

* embolden glyphs if requested

2187

2188

if (scaled_font->ft_options.extra_flags & CAIRO_FT_OPTIONS_EMBOLDEN)

2189

FT_GlyphSlot_Embolden (glyph);

2190

#endif

2191

2192

if (vertical_layout)

2193

_cairo_ft_scaled_glyph_vertical_layout_bearing_fix (scaled_font, glyph);

2194

2195

if (info & CAIRO_SCALED_GLYPH_INFO_METRICS) {

2196

2197

cairo_bool_t hint_metrics = scaled_font->base.options.hint_metrics != CAIRO_HINT_METRICS_OFF;

2198

2199

* Compute font-space metrics

2200

2201

metrics = &glyph->metrics;

2202

2203

if (unscaled->x_scale == 0)

2204

x_factor = 0;

2205

else

2206

x_factor = 1 / unscaled->x_scale;

2207

2208

if (unscaled->y_scale == 0)

2209

y_factor = 0;

2210

else

2211

y_factor = 1 / unscaled->y_scale;

2212

2213

2214

* Note: Y coordinates of the horizontal bearing need to be negated.

2215

2216

* Scale metrics back to glyph space from the scaled glyph space returned

2217

* by FreeType

2218

2219

* If we want hinted metrics but aren't asking for hinted glyphs from

2220

* FreeType, then we need to do the metric hinting ourselves.

2221

2222

2223

if (hint_metrics && (load_flags & FT_LOAD_NO_HINTING( 1L << 1 )))

2224

{

2225

FT_Pos x1, x2;

2226

FT_Pos y1, y2;

2227

FT_Pos advance;

2228

2229

if (!vertical_layout) {

2230

x1 = (metrics->horiBearingX) & -64;

2231

x2 = (metrics->horiBearingX + metrics->width + 63) & -64;

2232

y1 = (-metrics->horiBearingY) & -64;

2233

y2 = (-metrics->horiBearingY + metrics->height + 63) & -64;

2234

2235

advance = ((metrics->horiAdvance + 32) & -64);

2236

2237

fs_metrics.x_bearing = DOUBLE_FROM_26_6 (x1)((double)(x1) / 64.0) * x_factor;

2238

fs_metrics.y_bearing = DOUBLE_FROM_26_6 (y1)((double)(y1) / 64.0) * y_factor;

2239

2240

fs_metrics.width = DOUBLE_FROM_26_6 (x2 - x1)((double)(x2 - x1) / 64.0) * x_factor;

2241

fs_metrics.height = DOUBLE_FROM_26_6 (y2 - y1)((double)(y2 - y1) / 64.0) * y_factor;

2242

2243

fs_metrics.x_advance = DOUBLE_FROM_26_6 (advance)((double)(advance) / 64.0) * x_factor;

2244

fs_metrics.y_advance = 0;

2245

} else {

2246

x1 = (metrics->vertBearingX) & -64;

2247

x2 = (metrics->vertBearingX + metrics->width + 63) & -64;

2248

y1 = (metrics->vertBearingY) & -64;

2249

y2 = (metrics->vertBearingY + metrics->height + 63) & -64;

2250

2251

advance = ((metrics->vertAdvance + 32) & -64);

2252

2253

fs_metrics.x_bearing = DOUBLE_FROM_26_6 (x1)((double)(x1) / 64.0) * x_factor;

2254

fs_metrics.y_bearing = DOUBLE_FROM_26_6 (y1)((double)(y1) / 64.0) * y_factor;

2255

2256

fs_metrics.width = DOUBLE_FROM_26_6 (x2 - x1)((double)(x2 - x1) / 64.0) * x_factor;

2257

fs_metrics.height = DOUBLE_FROM_26_6 (y2 - y1)((double)(y2 - y1) / 64.0) * y_factor;

2258

2259

fs_metrics.x_advance = 0;

2260

fs_metrics.y_advance = DOUBLE_FROM_26_6 (advance)((double)(advance) / 64.0) * y_factor;

2261

}

2262

} else {

2263

fs_metrics.width = DOUBLE_FROM_26_6 (metrics->width)((double)(metrics->width) / 64.0) * x_factor;

2264

fs_metrics.height = DOUBLE_FROM_26_6 (metrics->height)((double)(metrics->height) / 64.0) * y_factor;

2265

2266

if (!vertical_layout) {

2267

fs_metrics.x_bearing = DOUBLE_FROM_26_6 (metrics->horiBearingX)((double)(metrics->horiBearingX) / 64.0) * x_factor;

2268

fs_metrics.y_bearing = DOUBLE_FROM_26_6 (-metrics->horiBearingY)((double)(-metrics->horiBearingY) / 64.0) * y_factor;

2269

2270

if (hint_metrics || glyph->format != FT_GLYPH_FORMAT_OUTLINE)

2271

fs_metrics.x_advance = DOUBLE_FROM_26_6 (metrics->horiAdvance)((double)(metrics->horiAdvance) / 64.0) * x_factor;

2272

else

2273

fs_metrics.x_advance = DOUBLE_FROM_16_16 (glyph->linearHoriAdvance)((double)(glyph->linearHoriAdvance) / 65536.0) * x_factor;

2274

fs_metrics.y_advance = 0 * y_factor;

2275

} else {

2276

fs_metrics.x_bearing = DOUBLE_FROM_26_6 (metrics->vertBearingX)((double)(metrics->vertBearingX) / 64.0) * x_factor;

2277

fs_metrics.y_bearing = DOUBLE_FROM_26_6 (metrics->vertBearingY)((double)(metrics->vertBearingY) / 64.0) * y_factor;

2278

2279

fs_metrics.x_advance = 0 * x_factor;

2280

if (hint_metrics || glyph->format != FT_GLYPH_FORMAT_OUTLINE)

2281

fs_metrics.y_advance = DOUBLE_FROM_26_6 (metrics->vertAdvance)((double)(metrics->vertAdvance) / 64.0) * y_factor;

2282

else

2283

fs_metrics.y_advance = DOUBLE_FROM_16_16 (glyph->linearVertAdvance)((double)(glyph->linearVertAdvance) / 65536.0) * y_factor;

2284

}

2285

}

2286

2287

_cairo_scaled_glyph_set_metrics (scaled_glyph,

2288

&scaled_font->base,

2289

&fs_metrics);

2290

}

2291

2292

if ((info & CAIRO_SCALED_GLYPH_INFO_SURFACE) != 0) {

2293

cairo_image_surface_t *surface;

2294

2295

if (glyph->format == FT_GLYPH_FORMAT_OUTLINE) {

2296

status = _render_glyph_outline (face, &scaled_font->ft_options.base,

2297

&surface);

2298

} else {

2299

status = _render_glyph_bitmap (face, &scaled_font->ft_options.base,

2300

&surface);

2301

if (likely (status == CAIRO_STATUS_SUCCESS)(__builtin_expect (__extension__ ({ int _cairo_boolean_var_; if
(status == CAIRO_STATUS_SUCCESS) _cairo_boolean_var_ = 1; else
_cairo_boolean_var_ = 0; _cairo_boolean_var_; }), 1)) &&

2302

unscaled->have_shape)

2303

{

2304

status = _transform_glyph_bitmap (&unscaled->current_shape,

2305

&surface);

2306

if (unlikely (status)(__builtin_expect (__extension__ ({ int _cairo_boolean_var_; if
(status) _cairo_boolean_var_ = 1; else _cairo_boolean_var_ =
0; _cairo_boolean_var_; }), 0)))

2307

cairo_surface_destroy_moz_cairo_surface_destroy (&surface->base);

2308

}

2309

}

2310

if (unlikely (status)(__builtin_expect (__extension__ ({ int _cairo_boolean_var_; if
(status) _cairo_boolean_var_ = 1; else _cairo_boolean_var_ =
0; _cairo_boolean_var_; }), 0)))

2311

goto FAIL;

2312

2313

_cairo_scaled_glyph_set_surface (scaled_glyph,

2314

&scaled_font->base,

2315

surface);

2316

}

2317

2318

if (info & CAIRO_SCALED_GLYPH_INFO_PATH) {

2319

cairo_path_fixed_t *path = NULL((void*)0); /* hide compiler warning */

2320

2321

2322

* A kludge -- the above code will trash the outline,

2323

* so reload it. This will probably never occur though

2324

2325

if ((info & CAIRO_SCALED_GLYPH_INFO_SURFACE) != 0) {

2326

error = FT_Load_Glyph (face,

2327

_cairo_scaled_glyph_index(scaled_glyph)((scaled_glyph)->hash_entry.hash),

2328

load_flags | FT_LOAD_NO_BITMAP( 1L << 3 ));

2329

/* XXX ignoring all other errors for now. They are not fatal, typically

2330

* just a glyph-not-found. */

2331

if (error == FT_Err_Out_Of_Memory) {

2332

status = _cairo_error (CAIRO_STATUS_NO_MEMORY);

2333

goto FAIL;

2334

}

2335

#if HAVE_FT_GLYPHSLOT_EMBOLDEN1

2336

2337

* embolden glyphs if requested

2338

2339

if (scaled_font->ft_options.extra_flags & CAIRO_FT_OPTIONS_EMBOLDEN)

2340

FT_GlyphSlot_Embolden (glyph);

2341

#endif

2342

if (vertical_layout)

2343

_cairo_ft_scaled_glyph_vertical_layout_bearing_fix (scaled_font, glyph);

2344

2345

}

2346

if (glyph->format == FT_GLYPH_FORMAT_OUTLINE)

2347

status = _decompose_glyph_outline (face, &scaled_font->ft_options.base,

2348

&path);

2349

else

2350

status = CAIRO_INT_STATUS_UNSUPPORTED;

2351

2352

if (unlikely (status)(__builtin_expect (__extension__ ({ int _cairo_boolean_var_; if
(status) _cairo_boolean_var_ = 1; else _cairo_boolean_var_ =
0; _cairo_boolean_var_; }), 0)))

2353

goto FAIL;

2354

2355

_cairo_scaled_glyph_set_path (scaled_glyph,

2356

&scaled_font->base,

2357

path);

2358

}

2359

FAIL:

2360

_cairo_ft_unscaled_font_unlock_face (unscaled);

2361

2362

return status;

2363

}

2364

2365

static unsigned long

2366

_cairo_ft_ucs4_to_index (void *abstract_font,

2367

uint32_t ucs4)

2368

{

2369

cairo_ft_scaled_font_t *scaled_font = abstract_font;

2370

cairo_ft_unscaled_font_t *unscaled = scaled_font->unscaled;

2371

FT_Face face;

2372

FT_UInt index;

2373

2374

face = _cairo_ft_unscaled_font_lock_face (unscaled);

2375

if (!face)

2376

return 0;

2377

2378

#if CAIRO_HAS_FC_FONT1

2379

index = FcFreeTypeCharIndex (face, ucs4);

2380

#else

2381

index = FT_Get_Char_Index (face, ucs4);

2382

#endif

2383

2384

_cairo_ft_unscaled_font_unlock_face (unscaled);

2385

return index;

2386

}

2387

2388

static cairo_int_status_t

2389

_cairo_ft_load_truetype_table (void *abstract_font,

2390

unsigned long tag,

2391

long offset,

2392

unsigned char *buffer,

2393

unsigned long *length)

2394

{

2395

cairo_ft_scaled_font_t *scaled_font = abstract_font;

2396

cairo_ft_unscaled_font_t *unscaled = scaled_font->unscaled;

2397

FT_Face face;

2398

cairo_status_t status = CAIRO_INT_STATUS_UNSUPPORTED;

2399

2400

if (_cairo_ft_scaled_font_is_vertical (&scaled_font->base))

2401

return CAIRO_INT_STATUS_UNSUPPORTED;

2402

2403

#if HAVE_FT_LOAD_SFNT_TABLE1

2404

face = _cairo_ft_unscaled_font_lock_face (unscaled);

2405

if (!face)

2406

return _cairo_error (CAIRO_STATUS_NO_MEMORY);

2407

2408

if (FT_IS_SFNT (face)( face->face_flags & ( 1L << 3 ) ) &&

2409

FT_Load_Sfnt_Table (face, tag, offset, buffer, length) == 0)

2410

status = CAIRO_STATUS_SUCCESS;

2411

2412

_cairo_ft_unscaled_font_unlock_face (unscaled);

2413

#endif

2414

2415

return status;

2416

}

2417

2418

static cairo_int_status_t

2419

_cairo_ft_index_to_ucs4(void *abstract_font,

2420

unsigned long index,

2421

uint32_t *ucs4)

2422

{

2423

cairo_ft_scaled_font_t *scaled_font = abstract_font;

2424

cairo_ft_unscaled_font_t *unscaled = scaled_font->unscaled;

2425

FT_Face face;

2426

FT_ULong charcode;

2427

FT_UInt gindex;

2428

2429

face = _cairo_ft_unscaled_font_lock_face (unscaled);

2430

if (!face)

2431

return _cairo_error (CAIRO_STATUS_NO_MEMORY);

2432

2433

*ucs4 = (uint32_t) -1;

2434

charcode = FT_Get_First_Char(face, &gindex);

2435

while (gindex != 0) {

2436

if (gindex == index) {

2437

*ucs4 = charcode;

2438

break;

2439

}

2440

charcode = FT_Get_Next_Char (face, charcode, &gindex);

2441

}

2442

2443

_cairo_ft_unscaled_font_unlock_face (unscaled);

2444

2445

return CAIRO_STATUS_SUCCESS;

2446

}

2447

2448

static const cairo_scaled_font_backend_t _cairo_ft_scaled_font_backend = {

2449

CAIRO_FONT_TYPE_FT,

2450

_cairo_ft_scaled_font_fini,

2451

_cairo_ft_scaled_glyph_init,

2452

NULL((void*)0), /* text_to_glyphs */

2453

_cairo_ft_ucs4_to_index,

2454

NULL((void*)0), /* show_glyphs */

2455

_cairo_ft_load_truetype_table,

2456

_cairo_ft_index_to_ucs4

2457

};

2458

2459

/* #cairo_ft_font_face_t */

2460

2461

#if CAIRO_HAS_FC_FONT1

2462

static cairo_status_t

2463

_cairo_ft_font_face_create_for_pattern (FcPattern *pattern,

2464

cairo_font_face_t **out);

2465

2466

static cairo_status_t

2467

_cairo_ft_font_face_create_for_toy (cairo_toy_font_face_t *toy_face,

2468

cairo_font_face_t **font_face)

2469

{

2470

FcPattern *pattern;

2471

int fcslant;

2472

int fcweight;

2473

cairo_status_t status = CAIRO_STATUS_SUCCESS;

2474

2475

pattern = FcPatternCreate ();

2476

if (!pattern)

2477

return _cairo_error (CAIRO_STATUS_NO_MEMORY);

2478

2479

if (!FcPatternAddString (pattern,

2480

FC_FAMILY"family", (unsigned char *) toy_face->family))

2481

{

2482

status = _cairo_error (CAIRO_STATUS_NO_MEMORY);

2483

goto FREE_PATTERN;

2484

}

2485

2486

switch (toy_face->slant)

2487

{

2488

case CAIRO_FONT_SLANT_ITALIC:

2489

fcslant = FC_SLANT_ITALIC100;

2490

break;

2491

case CAIRO_FONT_SLANT_OBLIQUE:

2492

fcslant = FC_SLANT_OBLIQUE110;

2493

break;

2494

case CAIRO_FONT_SLANT_NORMAL:

2495

default:

2496

fcslant = FC_SLANT_ROMAN0;

2497

break;

2498

}

2499

2500

if (!FcPatternAddInteger (pattern, FC_SLANT"slant", fcslant)) {

2501

status = _cairo_error (CAIRO_STATUS_NO_MEMORY);

2502

goto FREE_PATTERN;

2503

}

2504

2505

switch (toy_face->weight)

2506

{

2507

case CAIRO_FONT_WEIGHT_BOLD:

2508

fcweight = FC_WEIGHT_BOLD200;

2509

break;

2510

case CAIRO_FONT_WEIGHT_NORMAL:

2511

default:

2512

fcweight = FC_WEIGHT_MEDIUM100;

2513

break;

2514

}

2515

2516

if (!FcPatternAddInteger (pattern, FC_WEIGHT"weight", fcweight)) {

2517

status = _cairo_error (CAIRO_STATUS_NO_MEMORY);

2518

goto FREE_PATTERN;

2519

}

2520

2521

status = _cairo_ft_font_face_create_for_pattern (pattern, font_face);

2522

2523

FREE_PATTERN:

2524

FcPatternDestroy (pattern);

2525

2526

return status;

2527

}

2528

#endif

2529

2530

static void

2531

_cairo_ft_font_face_destroy (void *abstract_face)

2532

{

2533

cairo_ft_font_face_t *font_face = abstract_face;

2534

2535

/* When destroying a face created by cairo_ft_font_face_create_for_ft_face,

2536

* we have a special "zombie" state for the face when the unscaled font

2537

* is still alive but there are no other references to a font face with

2538

* the same FT_Face.

2539

2540

* We go from:

2541

2542

* font_face ------> unscaled

2543

* <-....weak....../

2544

2545

* To:

2546

2547

* font_face <------- unscaled

2548

2549

2550

if (font_face->unscaled &&

2551

font_face->unscaled->from_face &&

2552

font_face->next == NULL((void*)0) &&

2553

font_face->unscaled->faces == font_face &&

2554

CAIRO_REFERENCE_COUNT_GET_VALUE (&font_face->unscaled->base.ref_count)(*&(&font_face->unscaled->base.ref_count)->ref_count
) > 1)

2555

{

2556

cairo_font_face_reference_moz_cairo_font_face_reference (&font_face->base);

2557

2558

_cairo_unscaled_font_destroy (&font_face->unscaled->base);

2559

font_face->unscaled = NULL((void*)0);

2560

2561

return;

2562

}

2563

2564

if (font_face->unscaled) {

2565

cairo_ft_font_face_t *tmp_face = NULL((void*)0);

2566

cairo_ft_font_face_t *last_face = NULL((void*)0);

2567

2568

/* Remove face from linked list */

2569

for (tmp_face = font_face->unscaled->faces;

2570

tmp_face;

2571

tmp_face = tmp_face->next)

2572

{

2573

if (tmp_face == font_face) {

2574

if (last_face)

2575

last_face->next = tmp_face->next;

2576

else

2577

font_face->unscaled->faces = tmp_face->next;

2578

}

2579

2580

last_face = tmp_face;

2581

}

2582

2583

_cairo_unscaled_font_destroy (&font_face->unscaled->base);

2584

font_face->unscaled = NULL((void*)0);

2585

}

2586

2587

#if CAIRO_HAS_FC_FONT1

2588

if (font_face->pattern) {

2589

FcPatternDestroy (font_face->pattern);

2590

cairo_font_face_destroy_moz_cairo_font_face_destroy (font_face->resolved_font_face);

2591

}

2592

#endif

2593

}

2594

2595

static cairo_font_face_t *

2596

_cairo_ft_font_face_get_implementation (void *abstract_face,

2597

const cairo_matrix_t *font_matrix,

2598

const cairo_matrix_t *ctm,

2599

const cairo_font_options_t *options)

2600

{

2601

cairo_ft_font_face_t *font_face = abstract_face;

2602

2603

/* The handling of font options is different depending on how the

2604

* font face was created. When the user creates a font face with

2605

* cairo_ft_font_face_create_for_ft_face(), then the load flags

2606

* passed in augment the load flags for the options. But for

2607

* cairo_ft_font_face_create_for_pattern(), the load flags are

2608

* derived from a pattern where the user has called

2609

* cairo_ft_font_options_substitute(), so *just* use those load

2610

* flags and ignore the options.

2611

2612

2613

#if CAIRO_HAS_FC_FONT1

2614

/* If we have an unresolved pattern, resolve it and create

2615

* unscaled font. Otherwise, use the ones stored in font_face.

2616

2617

if (font_face->pattern) {

2618

cairo_font_face_t *resolved;

2619

2620

/* Cache the resolved font whilst the FcConfig remains consistent. */

2621

resolved = font_face->resolved_font_face;

2622

if (resolved != NULL((void*)0)) {

2623

if (! FcInitBringUptoDate ()) {

2624

_cairo_error_throw (CAIRO_STATUS_NO_MEMORY)do { cairo_status_t status__ = _cairo_error (CAIRO_STATUS_NO_MEMORY
); (void) status__; } while (0);

2625

return (cairo_font_face_t *) &_cairo_font_face_nil;

2626

}

2627

2628

if (font_face->resolved_config == FcConfigGetCurrent ())

2629

return cairo_font_face_reference_moz_cairo_font_face_reference (resolved);

2630

2631

cairo_font_face_destroy_moz_cairo_font_face_destroy (resolved);

2632

font_face->resolved_font_face = NULL((void*)0);

2633

}

2634

2635

resolved = _cairo_ft_resolve_pattern (font_face->pattern,

2636

font_matrix,

2637

ctm,

2638

options);

2639

if (unlikely (resolved->status)(__builtin_expect (__extension__ ({ int _cairo_boolean_var_; if
(resolved->status) _cairo_boolean_var_ = 1; else _cairo_boolean_var_
= 0; _cairo_boolean_var_; }), 0)))

2640

return resolved;

2641

2642

font_face->resolved_font_face = cairo_font_face_reference_moz_cairo_font_face_reference (resolved);

2643

font_face->resolved_config = FcConfigGetCurrent ();

2644

2645

return resolved;

2646

}

2647

#endif

2648

2649

return abstract_face;

2650

}

2651

2652

const cairo_font_face_backend_t _cairo_ft_font_face_backend = {

2653

CAIRO_FONT_TYPE_FT,

2654

#if CAIRO_HAS_FC_FONT1

2655

_cairo_ft_font_face_create_for_toy,

2656

#else

2657

NULL((void*)0),

2658

#endif

2659

_cairo_ft_font_face_destroy,

2660

_cairo_ft_font_face_scaled_font_create,

2661

_cairo_ft_font_face_get_implementation

2662

};

2663

2664

#if CAIRO_HAS_FC_FONT1

2665

static cairo_status_t

2666

_cairo_ft_font_face_create_for_pattern (FcPattern *pattern,

2667

cairo_font_face_t **out)

2668

{

2669

cairo_ft_font_face_t *font_face;

2670

2671

font_face = malloc (sizeof (cairo_ft_font_face_t));

2672

if (unlikely (font_face == NULL)(__builtin_expect (__extension__ ({ int _cairo_boolean_var_; if
(font_face == ((void*)0)) _cairo_boolean_var_ = 1; else _cairo_boolean_var_
= 0; _cairo_boolean_var_; }), 0)))

2673

return _cairo_error (CAIRO_STATUS_NO_MEMORY);

2674

2675

font_face->unscaled = NULL((void*)0);

2676

font_face->next = NULL((void*)0);

2677

2678

font_face->pattern = FcPatternDuplicate (pattern);

2679

if (unlikely (font_face->pattern == NULL)(__builtin_expect (__extension__ ({ int _cairo_boolean_var_; if
(font_face->pattern == ((void*)0)) _cairo_boolean_var_ = 1
; else _cairo_boolean_var_ = 0; _cairo_boolean_var_; }), 0))) {

2680

free (font_face);

2681

return _cairo_error (CAIRO_STATUS_NO_MEMORY);

2682

}

2683

2684

font_face->resolved_font_face = NULL((void*)0);

2685

font_face->resolved_config = NULL((void*)0);

2686

2687

_cairo_font_face_init (&font_face->base, &_cairo_ft_font_face_backend);

2688

2689

*out = &font_face->base;

2690

return CAIRO_STATUS_SUCCESS;

2691

}

2692

#endif

2693

2694

static cairo_font_face_t *

2695

_cairo_ft_font_face_create (cairo_ft_unscaled_font_t *unscaled,

2696

cairo_ft_options_t *ft_options)

2697

{

2698

cairo_ft_font_face_t *font_face, **prev_font_face;

2699

2700

/* Looked for an existing matching font face */

2701

for (font_face = unscaled->faces, prev_font_face = &unscaled->faces;

2702

font_face;

2703

prev_font_face = &font_face->next, font_face = font_face->next)

2704

{

2705

if (font_face->ft_options.load_flags == ft_options->load_flags &&

2706

font_face->ft_options.extra_flags == ft_options->extra_flags &&

2707

cairo_font_options_equal_moz_cairo_font_options_equal (&font_face->ft_options.base, &ft_options->base))

2708

{

2709

if (font_face->base.status) {

2710

/* The font_face has been left in an error state, abandon it. */

2711

*prev_font_face = font_face->next;

2712

break;

2713

}

2714

2715

if (font_face->unscaled == NULL((void*)0)) {

2716

/* Resurrect this "zombie" font_face (from

2717

* _cairo_ft_font_face_destroy), switching its unscaled_font

2718

* from owner to ownee. */

2719

font_face->unscaled = unscaled;

2720

_cairo_unscaled_font_reference (&unscaled->base);

2721

return &font_face->base;

2722

} else

2723

return cairo_font_face_reference_moz_cairo_font_face_reference (&font_face->base);

2724

}

2725

}

2726

2727

/* No match found, create a new one */

2728

font_face = malloc (sizeof (cairo_ft_font_face_t));

2729

if (unlikely (!font_face)(__builtin_expect (__extension__ ({ int _cairo_boolean_var_; if
(!font_face) _cairo_boolean_var_ = 1; else _cairo_boolean_var_
= 0; _cairo_boolean_var_; }), 0))) {

2730

_cairo_error_throw (CAIRO_STATUS_NO_MEMORY)do { cairo_status_t status__ = _cairo_error (CAIRO_STATUS_NO_MEMORY
); (void) status__; } while (0);

2731

return (cairo_font_face_t *)&_cairo_font_face_nil;

2732

}

2733

2734

font_face->unscaled = unscaled;

2735

_cairo_unscaled_font_reference (&unscaled->base);

2736

2737

font_face->ft_options = *ft_options;

2738

2739

if (unscaled->faces && unscaled->faces->unscaled == NULL((void*)0)) {

2740

/* This "zombie" font_face (from _cairo_ft_font_face_destroy)

2741

* is no longer needed. */

2742

assert (unscaled->from_face && unscaled->faces->next == NULL)do { if (!(unscaled->from_face && unscaled->faces
->next == ((void*)0))) fprintf(stderr, "Assertion failed at %s:%d: %s\n"
, "/home/sylvestre/dev/mozilla/ff/firefox.hg/gfx/cairo/cairo/src/cairo-ft-font.c"
, 2742, "unscaled->from_face && unscaled->faces->next == NULL"
); } while (0);

2743

cairo_font_face_destroy_moz_cairo_font_face_destroy (&unscaled->faces->base);

2744

unscaled->faces = NULL((void*)0);

2745

}

2746

2747

font_face->next = unscaled->faces;

2748

unscaled->faces = font_face;

2749

2750

#if CAIRO_HAS_FC_FONT1

2751

font_face->pattern = NULL((void*)0);

2752

#endif

2753

2754

_cairo_font_face_init (&font_face->base, &_cairo_ft_font_face_backend);

2755

2756

return &font_face->base;

2757

}

2758

2759

/* implement the platform-specific interface */

2760

2761

#if CAIRO_HAS_FC_FONT1

2762

static cairo_status_t

2763

_cairo_ft_font_options_substitute (const cairo_font_options_t *options,

2764

FcPattern *pattern)

2765

{

2766

FcValue v;

2767

2768

if (options->antialias != CAIRO_ANTIALIAS_DEFAULT)

2769

{

2770

if (FcPatternGet (pattern, FC_ANTIALIAS"antialias", 0, &v) == FcResultNoMatch)

2771

{

2772

if (! FcPatternAddBool (pattern,

2773

FC_ANTIALIAS"antialias",

2774

options->antialias != CAIRO_ANTIALIAS_NONE))

2775

return _cairo_error (CAIRO_STATUS_NO_MEMORY);

2776

2777

if (options->antialias != CAIRO_ANTIALIAS_SUBPIXEL) {

2778

FcPatternDel (pattern, FC_RGBA"rgba");

2779

if (! FcPatternAddInteger (pattern, FC_RGBA"rgba", FC_RGBA_NONE5))

2780

return _cairo_error (CAIRO_STATUS_NO_MEMORY);

2781

}

2782

}

2783

}

2784

2785

if (options->antialias != CAIRO_ANTIALIAS_DEFAULT)

2786

{

2787

if (FcPatternGet (pattern, FC_RGBA"rgba", 0, &v) == FcResultNoMatch)

2788

{

2789

int rgba;

2790

2791

if (options->antialias == CAIRO_ANTIALIAS_SUBPIXEL) {

2792

switch (options->subpixel_order) {

2793

case CAIRO_SUBPIXEL_ORDER_DEFAULT:

2794

case CAIRO_SUBPIXEL_ORDER_RGB:

2795

default:

2796

rgba = FC_RGBA_RGB1;

2797

break;

2798

case CAIRO_SUBPIXEL_ORDER_BGR:

2799

rgba = FC_RGBA_BGR2;

2800

break;

2801

case CAIRO_SUBPIXEL_ORDER_VRGB:

2802

rgba = FC_RGBA_VRGB3;

2803

break;

2804

case CAIRO_SUBPIXEL_ORDER_VBGR:

2805

rgba = FC_RGBA_VBGR4;

2806

break;

2807

}

2808

} else {

2809

rgba = FC_RGBA_NONE5;

2810

}

2811

2812

if (! FcPatternAddInteger (pattern, FC_RGBA"rgba", rgba))

2813

return _cairo_error (CAIRO_STATUS_NO_MEMORY);

2814

}

2815

}

2816

2817

if (options->lcd_filter != CAIRO_LCD_FILTER_DEFAULT)

2818

{

2819

if (FcPatternGet (pattern, FC_LCD_FILTER"lcdfilter", 0, &v) == FcResultNoMatch)

2820

{

2821

int lcd_filter;

2822

2823

switch (options->lcd_filter) {

2824

case CAIRO_LCD_FILTER_NONE:

2825

lcd_filter = FT_LCD_FILTER_NONE0;

2826

break;

2827

case CAIRO_LCD_FILTER_DEFAULT:

2828

case CAIRO_LCD_FILTER_INTRA_PIXEL:

2829

lcd_filter = FT_LCD_FILTER_LEGACY16;

2830

break;

2831

case CAIRO_LCD_FILTER_FIR3:

2832

lcd_filter = FT_LCD_FILTER_LIGHT2;

2833

break;

2834

default:

2835

case CAIRO_LCD_FILTER_FIR5:

2836

lcd_filter = FT_LCD_FILTER_DEFAULT1;

2837

break;

2838

}

2839

2840

if (! FcPatternAddInteger (pattern, FC_LCD_FILTER"lcdfilter", lcd_filter))

2841

return _cairo_error (CAIRO_STATUS_NO_MEMORY);

2842

}

2843

}

2844

2845

if (options->hint_style != CAIRO_HINT_STYLE_DEFAULT)

2846

{

2847

if (FcPatternGet (pattern, FC_HINTING"hinting", 0, &v) == FcResultNoMatch)

2848

{

2849

if (! FcPatternAddBool (pattern,

2850

FC_HINTING"hinting",

2851

options->hint_style != CAIRO_HINT_STYLE_NONE))

2852

return _cairo_error (CAIRO_STATUS_NO_MEMORY);

2853

}

2854

2855

#ifdef FC_HINT_STYLE"hintstyle"

2856

if (FcPatternGet (pattern, FC_HINT_STYLE"hintstyle", 0, &v) == FcResultNoMatch)

2857

{

2858

int hint_style;

2859

2860

switch (options->hint_style) {

2861

case CAIRO_HINT_STYLE_NONE:

2862

hint_style = FC_HINT_NONE0;

2863

break;

2864

case CAIRO_HINT_STYLE_SLIGHT:

2865

hint_style = FC_HINT_SLIGHT1;

2866

break;

2867

case CAIRO_HINT_STYLE_MEDIUM:

2868

hint_style = FC_HINT_MEDIUM2;

2869

break;

2870

case CAIRO_HINT_STYLE_FULL:

2871

case CAIRO_HINT_STYLE_DEFAULT:

2872

default:

2873

hint_style = FC_HINT_FULL3;

2874

break;

2875

}

2876

2877

if (! FcPatternAddInteger (pattern, FC_HINT_STYLE"hintstyle", hint_style))

2878

return _cairo_error (CAIRO_STATUS_NO_MEMORY);

2879

}

2880

#endif

2881

}

2882

2883

return CAIRO_STATUS_SUCCESS;

2884

}

2885

2886

/**

2887

* cairo_ft_font_options_substitute:

2888

* @options: a #cairo_font_options_t object

2889

* @pattern: an existing #FcPattern

2890

2891

* Add options to a #FcPattern based on a #cairo_font_options_t font

2892

* options object. Options that are already in the pattern, are not overridden,

2893

* so you should call this function after calling FcConfigSubstitute() (the

2894

* user's settings should override options based on the surface type), but

2895

* before calling FcDefaultSubstitute().

2896

**/

2897

void

2898

cairo_ft_font_options_substitute_moz_cairo_ft_font_options_substitute (const cairo_font_options_t *options,

2899

FcPattern *pattern)

2900

{

2901

if (cairo_font_options_status_moz_cairo_font_options_status ((cairo_font_options_t *) options))

2902

return;

2903

2904

_cairo_ft_font_options_substitute (options, pattern);

2905

}

2906

2907

static cairo_font_face_t *

2908

_cairo_ft_resolve_pattern (FcPattern *pattern,

2909

const cairo_matrix_t *font_matrix,

2910

const cairo_matrix_t *ctm,

2911

const cairo_font_options_t *font_options)

2912

{

2913

cairo_status_t status;

2914

2915

cairo_matrix_t scale;

2916

FcPattern *resolved;

2917

cairo_ft_font_transform_t sf;

2918

FcResult result;

2919

cairo_ft_unscaled_font_t *unscaled;

2920

cairo_ft_options_t ft_options;

2921

cairo_font_face_t *font_face;

2922

2923

scale = *ctm;

2924

scale.x0 = scale.y0 = 0;

2925

cairo_matrix_multiply_moz_cairo_matrix_multiply (&scale,

2926

font_matrix,

2927

&scale);

2928

2929

status = _compute_transform (&sf, &scale);

2930

if (unlikely (status)(__builtin_expect (__extension__ ({ int _cairo_boolean_var_; if
(status) _cairo_boolean_var_ = 1; else _cairo_boolean_var_ =
0; _cairo_boolean_var_; }), 0)))

2931

return (cairo_font_face_t *)&_cairo_font_face_nil;

2932

2933

pattern = FcPatternDuplicate (pattern);

2934

if (pattern == NULL((void*)0))

2935

return (cairo_font_face_t *)&_cairo_font_face_nil;

2936

2937

if (! FcPatternAddDouble (pattern, FC_PIXEL_SIZE"pixelsize", sf.y_scale)) {

2938

font_face = (cairo_font_face_t *)&_cairo_font_face_nil;

2939

goto FREE_PATTERN;

2940

}

2941

2942

if (! FcConfigSubstitute (NULL((void*)0), pattern, FcMatchPattern)) {

2943

font_face = (cairo_font_face_t *)&_cairo_font_face_nil;

2944

goto FREE_PATTERN;

2945

}

2946

2947

status = _cairo_ft_font_options_substitute (font_options, pattern);

2948

if (status) {

2949

font_face = (cairo_font_face_t *)&_cairo_font_face_nil;

2950

goto FREE_PATTERN;

2951

}

2952

2953

FcDefaultSubstitute (pattern);

2954

2955

resolved = FcFontMatch (NULL((void*)0), pattern, &result);

2956

if (!resolved) {

2957

/* We failed to find any font. Substitute twin so that the user can

2958

* see something (and hopefully recognise that the font is missing)

2959

* and not just receive a NO_MEMORY error during rendering.

2960

2961

font_face = _cairo_font_face_twin_create_fallback ();

2962

goto FREE_PATTERN;

2963

}

2964

2965

status = _cairo_ft_unscaled_font_create_for_pattern (resolved, &unscaled);

2966

if (unlikely (status || unscaled == NULL)(__builtin_expect (__extension__ ({ int _cairo_boolean_var_; if
(status || unscaled == ((void*)0)) _cairo_boolean_var_ = 1; else
_cairo_boolean_var_ = 0; _cairo_boolean_var_; }), 0))) {

2967

font_face = (cairo_font_face_t *)&_cairo_font_face_nil;

2968

goto FREE_RESOLVED;

2969

}

2970

2971

_get_pattern_ft_options (resolved, &ft_options);

2972

font_face = _cairo_ft_font_face_create (unscaled, &ft_options);

2973

_cairo_unscaled_font_destroy (&unscaled->base);

2974

2975

FREE_RESOLVED:

2976

FcPatternDestroy (resolved);

2977

2978

FREE_PATTERN:

2979

FcPatternDestroy (pattern);

2980

2981

return font_face;

2982

}

2983

2984

/**

2985

* cairo_ft_font_face_create_for_pattern:

2986

* @pattern: A fontconfig pattern. Cairo makes a copy of the pattern

2987

* if it needs to. You are free to modify or free @pattern after this call.

2988

2989

* Creates a new font face for the FreeType font backend based on a

2990

* fontconfig pattern. This font can then be used with

2991

* cairo_set_font_face() or cairo_scaled_font_create(). The

2992

* #cairo_scaled_font_t returned from cairo_scaled_font_create() is

2993

* also for the FreeType backend and can be used with functions such

2994

* as cairo_ft_scaled_font_lock_face().

2995

2996

* Font rendering options are represented both here and when you

2997

* call cairo_scaled_font_create(). Font options that have a representation

2998

* in a #FcPattern must be passed in here; to modify #FcPattern

2999

* appropriately to reflect the options in a #cairo_font_options_t, call

3000

* cairo_ft_font_options_substitute().

3001

3002

* The pattern's FC_FT_FACE element is inspected first and if that is set,

3003

* that will be the FreeType font face associated with the returned cairo

3004

* font face. Otherwise the FC_FILE element is checked. If it's set,

3005

* that and the value of the FC_INDEX element (defaults to zero) of @pattern

3006

* are used to load a font face from file.

3007

3008

* If both steps from the previous paragraph fails, @pattern will be passed

3009

* to FcConfigSubstitute, FcDefaultSubstitute, and finally FcFontMatch,

3010

* and the resulting font pattern is used.

3011

3012

* If the FC_FT_FACE element of @pattern is set, the user is responsible

3013

* for making sure that the referenced FT_Face remains valid for the life

3014

* time of the returned #cairo_font_face_t. See

3015

* cairo_ft_font_face_create_for_ft_face() for an exmaple of how to couple

3016

* the life time of the FT_Face to that of the cairo font-face.

3017

3018

* Return value: a newly created #cairo_font_face_t. Free with

3019

* cairo_font_face_destroy() when you are done using it.

3020

**/

3021

cairo_font_face_t *

3022

cairo_ft_font_face_create_for_pattern_moz_cairo_ft_font_face_create_for_pattern (FcPattern *pattern)

3023

{

3024

cairo_ft_unscaled_font_t *unscaled;

3025

cairo_font_face_t *font_face;

3026

cairo_ft_options_t ft_options;

3027

cairo_status_t status;

3028

3029

status = _cairo_ft_unscaled_font_create_for_pattern (pattern, &unscaled);

3030

if (unlikely (status)(__builtin_expect (__extension__ ({ int _cairo_boolean_var_; if
(status) _cairo_boolean_var_ = 1; else _cairo_boolean_var_ =
0; _cairo_boolean_var_; }), 0)))

3031

return (cairo_font_face_t *) &_cairo_font_face_nil;

3032

3033

/* Store the pattern. We will resolve it and create unscaled

3034

* font when creating scaled fonts */

3035

status = _cairo_ft_font_face_create_for_pattern (pattern,

3036

&font_face);

3037

if (unlikely (status)(__builtin_expect (__extension__ ({ int _cairo_boolean_var_; if
(status) _cairo_boolean_var_ = 1; else _cairo_boolean_var_ =
0; _cairo_boolean_var_; }), 0)))

3038

return (cairo_font_face_t *) &_cairo_font_face_nil;

3039

3040

return font_face;

3041

}

3042

3043

_get_pattern_ft_options (pattern, &ft_options);

3044

font_face = _cairo_ft_font_face_create (unscaled, &ft_options);

3045

_cairo_unscaled_font_destroy (&unscaled->base);

3046

3047

return font_face;

3048

}

3049

#endif

3050

3051

/**

3052

* cairo_ft_font_face_create_for_ft_face:

3053

* @face: A FreeType face object, already opened. This must

3054

* be kept around until the face's ref_count drops to

3055

* zero and it is freed. Since the face may be referenced

3056

* internally to Cairo, the best way to determine when it

3057

* is safe to free the face is to pass a

3058

* #cairo_destroy_func_t to cairo_font_face_set_user_data()

3059

* @load_flags: flags to pass to FT_Load_Glyph when loading

3060

* glyphs from the font. These flags are OR'ed together with

3061

* the flags derived from the #cairo_font_options_t passed

3062

* to cairo_scaled_font_create(), so only a few values such

3063

* as %FT_LOAD_VERTICAL_LAYOUT, and %FT_LOAD_FORCE_AUTOHINT

3064

* are useful. You should not pass any of the flags affecting

3065

* the load target, such as %FT_LOAD_TARGET_LIGHT.

3066

3067

* Creates a new font face for the FreeType font backend from a

3068

* pre-opened FreeType face. This font can then be used with

3069

* cairo_set_font_face() or cairo_scaled_font_create(). The

3070

* #cairo_scaled_font_t returned from cairo_scaled_font_create() is

3071

* also for the FreeType backend and can be used with functions such

3072

* as cairo_ft_scaled_font_lock_face(). Note that Cairo may keep a reference

3073

* to the FT_Face alive in a font-cache and the exact lifetime of the reference

3074

* depends highly upon the exact usage pattern and is subject to external

3075

* factors. You must not call FT_Done_Face() before the last reference to the

3076

* #cairo_font_face_t has been dropped.

3077

3078

* As an example, below is how one might correctly couple the lifetime of

3079

* the FreeType face object to the #cairo_font_face_t.

3080

3081

* <informalexample><programlisting>

3082

* static const cairo_user_data_key_t key;

3083

3084

* font_face = cairo_ft_font_face_create_for_ft_face (ft_face, 0);

3085

* status = cairo_font_face_set_user_data (font_face, &key,

3086

* ft_face, (cairo_destroy_func_t) FT_Done_Face);

3087

* if (status) {

3088

* cairo_font_face_destroy (font_face);

3089

* FT_Done_Face (ft_face);

3090

* return ERROR;

3091

* }

3092

* </programlisting></informalexample>

3093

3094

* Return value: a newly created #cairo_font_face_t. Free with

3095

* cairo_font_face_destroy() when you are done using it.

3096

**/

3097

cairo_font_face_t *

3098

cairo_ft_font_face_create_for_ft_face_moz_cairo_ft_font_face_create_for_ft_face (FT_Face face,

3099

int load_flags)

3100

{

3101

cairo_ft_unscaled_font_t *unscaled;

3102

cairo_font_face_t *font_face;

3103

cairo_ft_options_t ft_options;

3104

cairo_status_t status;

3105

3106

status = _cairo_ft_unscaled_font_create_from_face (face, &unscaled);

3107

if (unlikely (status)(__builtin_expect (__extension__ ({ int _cairo_boolean_var_; if
(status) _cairo_boolean_var_ = 1; else _cairo_boolean_var_ =
0; _cairo_boolean_var_; }), 0)))

3108

return (cairo_font_face_t *)&_cairo_font_face_nil;

3109

3110

ft_options.load_flags = load_flags;

3111

ft_options.extra_flags = 0;

3112

_cairo_font_options_init_default (&ft_options.base);

3113

3114

font_face = _cairo_ft_font_face_create (unscaled, &ft_options);

3115

_cairo_unscaled_font_destroy (&unscaled->base);

3116

3117

return font_face;

3118

}

3119

3120

/**

3121

* cairo_ft_scaled_font_lock_face:

3122

* @scaled_font: A #cairo_scaled_font_t from the FreeType font backend. Such an

3123

* object can be created by calling cairo_scaled_font_create() on a

3124

* FreeType backend font face (see cairo_ft_font_face_create_for_pattern(),

3125

* cairo_ft_font_face_create_for_ft_face()).

3126

3127

* cairo_ft_scaled_font_lock_face() gets the #FT_Face object from a FreeType

3128

* backend font and scales it appropriately for the font. You must

3129

* release the face with cairo_ft_scaled_font_unlock_face()

3130

* when you are done using it. Since the #FT_Face object can be

3131

* shared between multiple #cairo_scaled_font_t objects, you must not

3132

* lock any other font objects until you unlock this one. A count is

3133

* kept of the number of times cairo_ft_scaled_font_lock_face() is

3134

* called. cairo_ft_scaled_font_unlock_face() must be called the same number

3135

* of times.

3136

3137

* You must be careful when using this function in a library or in a

3138

* threaded application, because freetype's design makes it unsafe to

3139

* call freetype functions simultaneously from multiple threads, (even

3140

* if using distinct FT_Face objects). Because of this, application

3141

* code that acquires an FT_Face object with this call must add its

3142

* own locking to protect any use of that object, (and which also must

3143

* protect any other calls into cairo as almost any cairo function

3144

* might result in a call into the freetype library).

3145

3146

* Return value: The #FT_Face object for @font, scaled appropriately,

3147

* or %NULL if @scaled_font is in an error state (see

3148

* cairo_scaled_font_status()) or there is insufficient memory.

3149

**/

3150

FT_Face

3151

cairo_ft_scaled_font_lock_face_moz_cairo_ft_scaled_font_lock_face (cairo_scaled_font_t *abstract_font)

3152

{

3153

cairo_ft_scaled_font_t *scaled_font = (cairo_ft_scaled_font_t *) abstract_font;

3154

FT_Face face;

3155

cairo_status_t status;

3156

3157

if (! _cairo_scaled_font_is_ft (abstract_font)) {

3158

_cairo_error_throw (CAIRO_STATUS_FONT_TYPE_MISMATCH)do { cairo_status_t status__ = _cairo_error (CAIRO_STATUS_FONT_TYPE_MISMATCH
); (void) status__; } while (0);

3159

return NULL((void*)0);

3160

}

3161

3162

if (scaled_font->base.status)

3163

return NULL((void*)0);

3164

3165

face = _cairo_ft_unscaled_font_lock_face (scaled_font->unscaled);

3166

if (unlikely (face == NULL)(__builtin_expect (__extension__ ({ int _cairo_boolean_var_; if
(face == ((void*)0)) _cairo_boolean_var_ = 1; else _cairo_boolean_var_
= 0; _cairo_boolean_var_; }), 0))) {

3167

status = _cairo_scaled_font_set_error (&scaled_font->base, CAIRO_STATUS_NO_MEMORY);

3168

return NULL((void*)0);

3169

}

3170

3171

status = _cairo_ft_unscaled_font_set_scale (scaled_font->unscaled,

3172

&scaled_font->base.scale);

3173

if (unlikely (status)(__builtin_expect (__extension__ ({ int _cairo_boolean_var_; if
(status) _cairo_boolean_var_ = 1; else _cairo_boolean_var_ =
0; _cairo_boolean_var_; }), 0))) {

3174

_cairo_ft_unscaled_font_unlock_face (scaled_font->unscaled);

3175

status = _cairo_scaled_font_set_error (&scaled_font->base, status);

3176

return NULL((void*)0);

3177

}

3178

3179

/* Note: We deliberately release the unscaled font's mutex here,

3180

* so that we are not holding a lock across two separate calls to

3181

* cairo function, (which would give the application some

3182

* opportunity for creating deadlock. This is obviously unsafe,

3183

* but as documented, the user must add manual locking when using

3184

* this function. */

3185

CAIRO_MUTEX_UNLOCK (scaled_font->unscaled->mutex)pthread_mutex_unlock (&(scaled_font->unscaled->mutex
));

3186

3187

return face;

3188

}

3189

3190

/**

3191

* cairo_ft_scaled_font_unlock_face:

3192

* @scaled_font: A #cairo_scaled_font_t from the FreeType font backend. Such an

3193

* object can be created by calling cairo_scaled_font_create() on a

3194

* FreeType backend font face (see cairo_ft_font_face_create_for_pattern(),

3195

* cairo_ft_font_face_create_for_ft_face()).

3196

3197

* Releases a face obtained with cairo_ft_scaled_font_lock_face().

3198

**/

3199

void

3200

cairo_ft_scaled_font_unlock_face_moz_cairo_ft_scaled_font_unlock_face (cairo_scaled_font_t *abstract_font)

3201

{

3202

cairo_ft_scaled_font_t *scaled_font = (cairo_ft_scaled_font_t *) abstract_font;

3203

3204

if (! _cairo_scaled_font_is_ft (abstract_font)) {

3205

_cairo_error_throw (CAIRO_STATUS_FONT_TYPE_MISMATCH)do { cairo_status_t status__ = _cairo_error (CAIRO_STATUS_FONT_TYPE_MISMATCH
); (void) status__; } while (0);

3206

return;

3207

}

3208

3209

if (scaled_font->base.status)

3210

return;

3211

3212

/* Note: We released the unscaled font's mutex at the end of

3213

* cairo_ft_scaled_font_lock_face, so we have to acquire it again

3214

* as _cairo_ft_unscaled_font_unlock_face expects it to be held

3215

* when we call into it. */

3216

CAIRO_MUTEX_LOCK (scaled_font->unscaled->mutex)pthread_mutex_lock (&(scaled_font->unscaled->mutex)
);

3217

3218

_cairo_ft_unscaled_font_unlock_face (scaled_font->unscaled);

3219

}

3220

3221

/* We expose our unscaled font implementation internally for the the

3222

* PDF backend, which needs to keep track of the the different

3223

* fonts-on-disk used by a document, so it can embed them.

3224

3225

cairo_unscaled_font_t *

3226

_cairo_ft_scaled_font_get_unscaled_font (cairo_scaled_font_t *abstract_font)

3227

{

3228

cairo_ft_scaled_font_t *scaled_font = (cairo_ft_scaled_font_t *) abstract_font;

3229

3230

return &scaled_font->unscaled->base;

3231

}

3232

3233

cairo_bool_t

3234

_cairo_ft_scaled_font_is_vertical (cairo_scaled_font_t *scaled_font)

3235

{

3236

cairo_ft_scaled_font_t *ft_scaled_font;

3237

3238

if (!_cairo_scaled_font_is_ft (scaled_font))

3239

return FALSE0;

3240

3241

ft_scaled_font = (cairo_ft_scaled_font_t *) scaled_font;

3242

if (ft_scaled_font->ft_options.load_flags & FT_LOAD_VERTICAL_LAYOUT( 1L << 4 ))

3243

return TRUE1;

3244

return FALSE0;

3245

}

3246

3247

unsigned int

3248

_cairo_ft_scaled_font_get_load_flags (cairo_scaled_font_t *scaled_font)

3249

{

3250

cairo_ft_scaled_font_t *ft_scaled_font;

3251

3252

if (! _cairo_scaled_font_is_ft (scaled_font))

3253

return 0;

3254

3255

ft_scaled_font = (cairo_ft_scaled_font_t *) scaled_font;

3256

return ft_scaled_font->ft_options.load_flags;

3257

}

3258

3259

void

3260

_cairo_ft_font_reset_static_data (void)

3261

{

3262

_cairo_ft_unscaled_font_map_destroy ();

3263

}