summaryrefslogtreecommitdiffstats
path: root/gfx/2d/ScaledFontFontconfig.cpp
blob: e3025c1072366357e719887fe88f92d99a310b27 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#include "ScaledFontFontconfig.h"
#include "UnscaledFontFreeType.h"
#include "Logging.h"
#include "mozilla/StaticPrefs_gfx.h"
#include "mozilla/webrender/WebRenderTypes.h"

#include "skia/include/ports/SkTypeface_cairo.h"
#include "HelpersSkia.h"

#include <fontconfig/fcfreetype.h>

#include FT_LCD_FILTER_H
#include FT_MULTIPLE_MASTERS_H

namespace mozilla::gfx {

ScaledFontFontconfig::ScaledFontFontconfig(
    RefPtr<SharedFTFace>&& aFace, FcPattern* aPattern,
    const RefPtr<UnscaledFont>& aUnscaledFont, Float aSize)
    : ScaledFontBase(aUnscaledFont, aSize),
      mFace(std::move(aFace)),
      mInstanceData(aPattern) {}

ScaledFontFontconfig::ScaledFontFontconfig(
    RefPtr<SharedFTFace>&& aFace, const InstanceData& aInstanceData,
    const RefPtr<UnscaledFont>& aUnscaledFont, Float aSize)
    : ScaledFontBase(aUnscaledFont, aSize),
      mFace(std::move(aFace)),
      mInstanceData(aInstanceData) {}

bool ScaledFontFontconfig::UseSubpixelPosition() const {
  return !MOZ_UNLIKELY(
             StaticPrefs::
                 gfx_text_subpixel_position_force_disabled_AtStartup()) &&
         mInstanceData.mAntialias != AntialiasMode::NONE &&
         FT_IS_SCALABLE(mFace->GetFace()) &&
         (mInstanceData.mHinting == FontHinting::NONE ||
          mInstanceData.mHinting == FontHinting::LIGHT ||
          MOZ_UNLIKELY(
              StaticPrefs::
                  gfx_text_subpixel_position_force_enabled_AtStartup()));
}

SkTypeface* ScaledFontFontconfig::CreateSkTypeface() {
  SkPixelGeometry geo = mInstanceData.mFlags & InstanceData::SUBPIXEL_BGR
                            ? (mInstanceData.mFlags & InstanceData::LCD_VERTICAL
                                   ? kBGR_V_SkPixelGeometry
                                   : kBGR_H_SkPixelGeometry)
                            : (mInstanceData.mFlags & InstanceData::LCD_VERTICAL
                                   ? kRGB_V_SkPixelGeometry
                                   : kRGB_H_SkPixelGeometry);
  return SkCreateTypefaceFromCairoFTFont(mFace->GetFace(), mFace.get(), geo,
                                         mInstanceData.mLcdFilter);
}

void ScaledFontFontconfig::SetupSkFontDrawOptions(SkFont& aFont) {
  aFont.setSubpixel(UseSubpixelPosition());

  if (mInstanceData.mFlags & InstanceData::AUTOHINT) {
    aFont.setForceAutoHinting(true);
  }
  if (mInstanceData.mFlags & InstanceData::EMBEDDED_BITMAP) {
    aFont.setEmbeddedBitmaps(true);
  }
  if (mInstanceData.mFlags & InstanceData::EMBOLDEN) {
    aFont.setEmbolden(true);
  }

  aFont.setHinting(GfxHintingToSkiaHinting(mInstanceData.mHinting));
}

bool ScaledFontFontconfig::MayUseBitmaps() {
  return mInstanceData.mFlags & InstanceData::EMBEDDED_BITMAP &&
         !FT_IS_SCALABLE(mFace->GetFace());
}

cairo_font_face_t* ScaledFontFontconfig::CreateCairoFontFace(
    cairo_font_options_t* aFontOptions) {
  int loadFlags;
  unsigned int synthFlags;
  mInstanceData.SetupFontOptions(aFontOptions, &loadFlags, &synthFlags);

  return cairo_ft_font_face_create_for_ft_face(mFace->GetFace(), loadFlags,
                                               synthFlags, mFace.get());
}

AntialiasMode ScaledFontFontconfig::GetDefaultAAMode() {
  return mInstanceData.mAntialias;
}

bool FcPatternAllowsBitmaps(FcPattern* aPattern, bool aAntialias,
                            bool aHinting) {
  if (!aAntialias) {
    // Always allow bitmaps when antialiasing is disabled
    return true;
  }
  FcBool bitmap;
  if (FcPatternGetBool(aPattern, FC_EMBEDDED_BITMAP, 0, &bitmap) !=
          FcResultMatch ||
      !bitmap) {
    // If bitmaps were explicitly disabled, then disallow them
    return false;
  }
  if (aHinting) {
    // If hinting is used and bitmaps were enabled, then allow them
    return true;
  }
  // When hinting is disabled, then avoid loading bitmaps from outline
  // fonts. However, emoji fonts may have no outlines while containing
  // bitmaps intended to be scaled, so still allow those.
  FcBool outline;
  if (FcPatternGetBool(aPattern, FC_OUTLINE, 0, &outline) == FcResultMatch &&
      outline) {
    return false;
  }
  FcBool scalable;
  if (FcPatternGetBool(aPattern, FC_SCALABLE, 0, &scalable) != FcResultMatch ||
      !scalable) {
    return false;
  }
  return true;
}

ScaledFontFontconfig::InstanceData::InstanceData(FcPattern* aPattern)
    : mFlags(0),
      mAntialias(AntialiasMode::NONE),
      mHinting(FontHinting::NONE),
      mLcdFilter(FT_LCD_FILTER_LEGACY) {
  // Record relevant Fontconfig properties into instance data.
  FcBool autohint;
  if (FcPatternGetBool(aPattern, FC_AUTOHINT, 0, &autohint) == FcResultMatch &&
      autohint) {
    mFlags |= AUTOHINT;
  }
  FcBool embolden;
  if (FcPatternGetBool(aPattern, FC_EMBOLDEN, 0, &embolden) == FcResultMatch &&
      embolden) {
    mFlags |= EMBOLDEN;
  }

  // For printer fonts, Cairo hint metrics and hinting will be disabled.
  // For other fonts, allow hint metrics and hinting.
  FcBool printing;
  if (FcPatternGetBool(aPattern, "gfx.printing", 0, &printing) !=
          FcResultMatch ||
      !printing) {
    mFlags |= HINT_METRICS;

    FcBool hinting;
    if (FcPatternGetBool(aPattern, FC_HINTING, 0, &hinting) != FcResultMatch ||
        hinting) {
      int hintstyle;
      if (FcPatternGetInteger(aPattern, FC_HINT_STYLE, 0, &hintstyle) !=
          FcResultMatch) {
        hintstyle = FC_HINT_FULL;
      }
      switch (hintstyle) {
        case FC_HINT_SLIGHT:
          mHinting = FontHinting::LIGHT;
          break;
        case FC_HINT_MEDIUM:
          mHinting = FontHinting::NORMAL;
          break;
        case FC_HINT_FULL:
          mHinting = FontHinting::FULL;
          break;
        case FC_HINT_NONE:
        default:
          break;
      }
    }
  }

  FcBool antialias;
  if (FcPatternGetBool(aPattern, FC_ANTIALIAS, 0, &antialias) ==
          FcResultMatch &&
      !antialias) {
    // If AA is explicitly disabled, leave bitmaps enabled.
    mFlags |= EMBEDDED_BITMAP;
  } else {
    mAntialias = AntialiasMode::GRAY;

    // Otherwise, if AA is enabled, disable embedded bitmaps unless explicitly
    // enabled.
    if (FcPatternAllowsBitmaps(aPattern, true, mHinting != FontHinting::NONE)) {
      mFlags |= EMBEDDED_BITMAP;
    }

    // Only record subpixel order and lcd filtering if antialiasing is enabled.
    int rgba;
    if (mFlags & HINT_METRICS &&
        FcPatternGetInteger(aPattern, FC_RGBA, 0, &rgba) == FcResultMatch) {
      switch (rgba) {
        case FC_RGBA_RGB:
        case FC_RGBA_BGR:
        case FC_RGBA_VRGB:
        case FC_RGBA_VBGR:
          mAntialias = AntialiasMode::SUBPIXEL;
          if (rgba == FC_RGBA_VRGB || rgba == FC_RGBA_VBGR) {
            mFlags |= LCD_VERTICAL;
          }
          if (rgba == FC_RGBA_BGR || rgba == FC_RGBA_VBGR) {
            mFlags |= SUBPIXEL_BGR;
          }
          break;
        case FC_RGBA_NONE:
        case FC_RGBA_UNKNOWN:
        default:
          break;
      }
    }

    int filter;
    if (mAntialias == AntialiasMode::SUBPIXEL &&
        FcPatternGetInteger(aPattern, FC_LCD_FILTER, 0, &filter) ==
            FcResultMatch) {
      switch (filter) {
        case FC_LCD_NONE:
          mLcdFilter = FT_LCD_FILTER_NONE;
          break;
        case FC_LCD_DEFAULT:
          mLcdFilter = FT_LCD_FILTER_DEFAULT;
          break;
        case FC_LCD_LIGHT:
          mLcdFilter = FT_LCD_FILTER_LIGHT;
          break;
        case FC_LCD_LEGACY:
        default:
          break;
      }
    }
  }
}

ScaledFontFontconfig::InstanceData::InstanceData(
    const wr::FontInstanceOptions* aOptions,
    const wr::FontInstancePlatformOptions* aPlatformOptions)
    : mFlags(HINT_METRICS),
      mAntialias(AntialiasMode::NONE),
      mHinting(FontHinting::FULL),
      mLcdFilter(FT_LCD_FILTER_LEGACY) {
  if (aOptions) {
    if (aOptions->flags & wr::FontInstanceFlags::FORCE_AUTOHINT) {
      mFlags |= AUTOHINT;
    }
    if (aOptions->flags & wr::FontInstanceFlags::EMBEDDED_BITMAPS) {
      mFlags |= EMBEDDED_BITMAP;
    }
    if (aOptions->flags & wr::FontInstanceFlags::SYNTHETIC_BOLD) {
      mFlags |= EMBOLDEN;
    }
    if (aOptions->render_mode == wr::FontRenderMode::Subpixel) {
      mAntialias = AntialiasMode::SUBPIXEL;
      if (aOptions->flags & wr::FontInstanceFlags::SUBPIXEL_BGR) {
        mFlags |= SUBPIXEL_BGR;
      }
      if (aOptions->flags & wr::FontInstanceFlags::LCD_VERTICAL) {
        mFlags |= LCD_VERTICAL;
      }
    } else if (aOptions->render_mode != wr::FontRenderMode::Mono) {
      mAntialias = AntialiasMode::GRAY;
    }
  }
  if (aPlatformOptions) {
    switch (aPlatformOptions->hinting) {
      case wr::FontHinting::None:
        mHinting = FontHinting::NONE;
        break;
      case wr::FontHinting::Light:
        mHinting = FontHinting::LIGHT;
        break;
      case wr::FontHinting::Normal:
        mHinting = FontHinting::NORMAL;
        break;
      default:
        break;
    }
    switch (aPlatformOptions->lcd_filter) {
      case wr::FontLCDFilter::None:
        mLcdFilter = FT_LCD_FILTER_NONE;
        break;
      case wr::FontLCDFilter::Default:
        mLcdFilter = FT_LCD_FILTER_DEFAULT;
        break;
      case wr::FontLCDFilter::Light:
        mLcdFilter = FT_LCD_FILTER_LIGHT;
        break;
      default:
        break;
    }
  }
}

void ScaledFontFontconfig::InstanceData::SetupFontOptions(
    cairo_font_options_t* aFontOptions, int* aOutLoadFlags,
    unsigned int* aOutSynthFlags) const {
  // For regular (non-printer) fonts, enable hint metrics as well as hinting
  // and (possibly subpixel) antialiasing.
  cairo_font_options_set_hint_metrics(
      aFontOptions,
      mFlags & HINT_METRICS ? CAIRO_HINT_METRICS_ON : CAIRO_HINT_METRICS_OFF);

  cairo_hint_style_t hinting;
  switch (mHinting) {
    case FontHinting::NONE:
      hinting = CAIRO_HINT_STYLE_NONE;
      break;
    case FontHinting::LIGHT:
      hinting = CAIRO_HINT_STYLE_SLIGHT;
      break;
    case FontHinting::NORMAL:
      hinting = CAIRO_HINT_STYLE_MEDIUM;
      break;
    case FontHinting::FULL:
      hinting = CAIRO_HINT_STYLE_FULL;
      break;
  }
  cairo_font_options_set_hint_style(aFontOptions, hinting);

  switch (mAntialias) {
    case AntialiasMode::NONE:
      cairo_font_options_set_antialias(aFontOptions, CAIRO_ANTIALIAS_NONE);
      break;
    case AntialiasMode::GRAY:
    default:
      cairo_font_options_set_antialias(aFontOptions, CAIRO_ANTIALIAS_GRAY);
      break;
    case AntialiasMode::SUBPIXEL: {
      cairo_font_options_set_antialias(aFontOptions, CAIRO_ANTIALIAS_SUBPIXEL);
      cairo_font_options_set_subpixel_order(
          aFontOptions,
          mFlags & SUBPIXEL_BGR
              ? (mFlags & LCD_VERTICAL ? CAIRO_SUBPIXEL_ORDER_VBGR
                                       : CAIRO_SUBPIXEL_ORDER_BGR)
              : (mFlags & LCD_VERTICAL ? CAIRO_SUBPIXEL_ORDER_VRGB
                                       : CAIRO_SUBPIXEL_ORDER_RGB));
      cairo_lcd_filter_t lcdFilter = CAIRO_LCD_FILTER_DEFAULT;
      switch (mLcdFilter) {
        case FT_LCD_FILTER_NONE:
          lcdFilter = CAIRO_LCD_FILTER_NONE;
          break;
        case FT_LCD_FILTER_DEFAULT:
          lcdFilter = CAIRO_LCD_FILTER_FIR5;
          break;
        case FT_LCD_FILTER_LIGHT:
          lcdFilter = CAIRO_LCD_FILTER_FIR3;
          break;
        case FT_LCD_FILTER_LEGACY:
          lcdFilter = CAIRO_LCD_FILTER_INTRA_PIXEL;
          break;
      }
      cairo_font_options_set_lcd_filter(aFontOptions, lcdFilter);
      break;
    }
  }

  // Try to build a sane initial set of Cairo font options based on the
  // Fontconfig pattern.
  int loadFlags = FT_LOAD_DEFAULT;
  unsigned int synthFlags = 0;

  if (!(mFlags & EMBEDDED_BITMAP)) {
    loadFlags |= FT_LOAD_NO_BITMAP;
  }
  if (mFlags & AUTOHINT) {
    loadFlags |= FT_LOAD_FORCE_AUTOHINT;
  }
  if (mFlags & EMBOLDEN) {
    synthFlags |= CAIRO_FT_SYNTHESIZE_BOLD;
  }

  *aOutLoadFlags = loadFlags;
  *aOutSynthFlags = synthFlags;
}

bool ScaledFontFontconfig::GetFontInstanceData(FontInstanceDataOutput aCb,
                                               void* aBaton) {
  std::vector<FontVariation> variations;
  if (HasVariationSettings()) {
    UnscaledFontFreeType::GetVariationSettingsFromFace(&variations,
                                                       mFace->GetFace());
  }

  aCb(reinterpret_cast<uint8_t*>(&mInstanceData), sizeof(mInstanceData),
      variations.data(), variations.size(), aBaton);
  return true;
}

bool ScaledFontFontconfig::GetWRFontInstanceOptions(
    Maybe<wr::FontInstanceOptions>* aOutOptions,
    Maybe<wr::FontInstancePlatformOptions>* aOutPlatformOptions,
    std::vector<FontVariation>* aOutVariations) {
  wr::FontInstanceOptions options;
  options.render_mode = wr::FontRenderMode::Alpha;
  options.flags = wr::FontInstanceFlags{0};
  if (UseSubpixelPosition()) {
    options.flags |= wr::FontInstanceFlags::SUBPIXEL_POSITION;
  }
  options.bg_color = wr::ToColorU(DeviceColor());
  options.synthetic_italics =
      wr::DegreesToSyntheticItalics(GetSyntheticObliqueAngle());

  wr::FontInstancePlatformOptions platformOptions;
  platformOptions.lcd_filter = wr::FontLCDFilter::Legacy;
  platformOptions.hinting = wr::FontHinting::Normal;

  if (mInstanceData.mFlags & InstanceData::AUTOHINT) {
    options.flags |= wr::FontInstanceFlags::FORCE_AUTOHINT;
  }
  if (mInstanceData.mFlags & InstanceData::EMBOLDEN) {
    options.flags |= wr::FontInstanceFlags::SYNTHETIC_BOLD;
  }
  if (mInstanceData.mFlags & InstanceData::EMBEDDED_BITMAP) {
    options.flags |= wr::FontInstanceFlags::EMBEDDED_BITMAPS;
  }
  if (mInstanceData.mAntialias != AntialiasMode::NONE) {
    if (mInstanceData.mAntialias == AntialiasMode::SUBPIXEL) {
      options.render_mode = wr::FontRenderMode::Subpixel;
      platformOptions.hinting = wr::FontHinting::LCD;
      if (mInstanceData.mFlags & InstanceData::LCD_VERTICAL) {
        options.flags |= wr::FontInstanceFlags::LCD_VERTICAL;
      }
      if (mInstanceData.mFlags & InstanceData::SUBPIXEL_BGR) {
        options.flags |= wr::FontInstanceFlags::SUBPIXEL_BGR;
      }
    }

    switch (mInstanceData.mLcdFilter) {
      case FT_LCD_FILTER_NONE:
        platformOptions.lcd_filter = wr::FontLCDFilter::None;
        break;
      case FT_LCD_FILTER_DEFAULT:
        platformOptions.lcd_filter = wr::FontLCDFilter::Default;
        break;
      case FT_LCD_FILTER_LIGHT:
        platformOptions.lcd_filter = wr::FontLCDFilter::Light;
        break;
      case FT_LCD_FILTER_LEGACY:
      default:
        break;
    }

    switch (mInstanceData.mHinting) {
      case FontHinting::NONE:
        platformOptions.hinting = wr::FontHinting::None;
        break;
      case FontHinting::LIGHT:
        platformOptions.hinting = wr::FontHinting::Light;
        break;
      case FontHinting::NORMAL:
        platformOptions.hinting = wr::FontHinting::Normal;
        break;
      case FontHinting::FULL:
        break;
    }
  } else {
    options.render_mode = wr::FontRenderMode::Mono;

    switch (mInstanceData.mHinting) {
      case FontHinting::NONE:
        platformOptions.hinting = wr::FontHinting::None;
        break;
      default:
        platformOptions.hinting = wr::FontHinting::Mono;
        break;
    }
  }

  *aOutOptions = Some(options);
  *aOutPlatformOptions = Some(platformOptions);

  if (HasVariationSettings()) {
    UnscaledFontFreeType::GetVariationSettingsFromFace(aOutVariations,
                                                       mFace->GetFace());
  }

  return true;
}

already_AddRefed<ScaledFont> UnscaledFontFontconfig::CreateScaledFont(
    Float aSize, const uint8_t* aInstanceData, uint32_t aInstanceDataLength,
    const FontVariation* aVariations, uint32_t aNumVariations) {
  if (aInstanceDataLength < sizeof(ScaledFontFontconfig::InstanceData)) {
    gfxWarning() << "Fontconfig scaled font instance data is truncated.";
    return nullptr;
  }
  const ScaledFontFontconfig::InstanceData& instanceData =
      *reinterpret_cast<const ScaledFontFontconfig::InstanceData*>(
          aInstanceData);

  RefPtr<SharedFTFace> face(InitFace());
  if (!face) {
    gfxWarning() << "Attempted to deserialize Fontconfig scaled font without "
                    "FreeType face";
    return nullptr;
  }

  if (aNumVariations > 0 && face->GetData()) {
    if (RefPtr<SharedFTFace> varFace = face->GetData()->CloneFace()) {
      face = varFace;
    }
  }

  // Only apply variations if we have an explicitly cloned face.
  if (aNumVariations > 0 && face != GetFace()) {
    ApplyVariationsToFace(aVariations, aNumVariations, face->GetFace());
  }

  RefPtr<ScaledFontFontconfig> scaledFont =
      new ScaledFontFontconfig(std::move(face), instanceData, this, aSize);

  return scaledFont.forget();
}

already_AddRefed<ScaledFont> UnscaledFontFontconfig::CreateScaledFontFromWRFont(
    Float aGlyphSize, const wr::FontInstanceOptions* aOptions,
    const wr::FontInstancePlatformOptions* aPlatformOptions,
    const FontVariation* aVariations, uint32_t aNumVariations) {
  ScaledFontFontconfig::InstanceData instanceData(aOptions, aPlatformOptions);
  return CreateScaledFont(aGlyphSize, reinterpret_cast<uint8_t*>(&instanceData),
                          sizeof(instanceData), aVariations, aNumVariations);
}

bool ScaledFontFontconfig::HasVariationSettings() {
  // Check if the FT face has been cloned.
  return mFace &&
         mFace->GetFace()->face_flags & FT_FACE_FLAG_MULTIPLE_MASTERS &&
         mFace != static_cast<UnscaledFontFontconfig*>(mUnscaledFont.get())
                      ->GetFace();
}

already_AddRefed<UnscaledFont> UnscaledFontFontconfig::CreateFromFontDescriptor(
    const uint8_t* aData, uint32_t aDataLength, uint32_t aIndex) {
  if (aDataLength == 0) {
    gfxWarning() << "Fontconfig font descriptor is truncated.";
    return nullptr;
  }
  const char* path = reinterpret_cast<const char*>(aData);
  RefPtr<UnscaledFont> unscaledFont =
      new UnscaledFontFontconfig(std::string(path, aDataLength), aIndex);
  return unscaledFont.forget();
}

}  // namespace mozilla::gfx