summaryrefslogtreecommitdiffstats
path: root/gfx/thebes/gfxAndroidPlatform.cpp
blob: a121d5550a42633087e25a5193db3cb131964e72 (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
/* -*- 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 "base/basictypes.h"

#include "gfxAndroidPlatform.h"
#include "mozilla/gfx/2D.h"
#include "mozilla/gfx/gfxVars.h"
#include "mozilla/CountingAllocatorBase.h"
#include "mozilla/intl/LocaleService.h"
#include "mozilla/intl/OSPreferences.h"
#include "mozilla/java/GeckoAppShellWrappers.h"
#include "mozilla/jni/Utils.h"
#include "mozilla/layers/AndroidHardwareBuffer.h"
#include "mozilla/Preferences.h"
#include "mozilla/StaticPrefs_gfx.h"
#include "mozilla/StaticPrefs_webgl.h"
#include "mozilla/widget/AndroidVsync.h"

#include "gfx2DGlue.h"
#include "gfxFT2FontList.h"
#include "gfxImageSurface.h"
#include "gfxTextRun.h"
#include "nsXULAppAPI.h"
#include "nsIScreen.h"
#include "nsServiceManagerUtils.h"
#include "nsUnicodeProperties.h"
#include "cairo.h"
#include "VsyncSource.h"

#include "ft2build.h"
#include FT_FREETYPE_H
#include FT_MODULE_H

using namespace mozilla;
using namespace mozilla::dom;
using namespace mozilla::gfx;
using namespace mozilla::unicode;
using mozilla::intl::LocaleService;
using mozilla::intl::OSPreferences;

static FT_Library gPlatformFTLibrary = nullptr;

class FreetypeReporter final : public nsIMemoryReporter,
                               public CountingAllocatorBase<FreetypeReporter> {
 private:
  ~FreetypeReporter() {}

 public:
  NS_DECL_ISUPPORTS

  static void* Malloc(FT_Memory, long size) { return CountingMalloc(size); }

  static void Free(FT_Memory, void* p) { return CountingFree(p); }

  static void* Realloc(FT_Memory, long cur_size, long new_size, void* p) {
    return CountingRealloc(p, new_size);
  }

  NS_IMETHOD CollectReports(nsIHandleReportCallback* aHandleReport,
                            nsISupports* aData, bool aAnonymize) override {
    MOZ_COLLECT_REPORT("explicit/freetype", KIND_HEAP, UNITS_BYTES,
                       MemoryAllocated(), "Memory used by Freetype.");

    return NS_OK;
  }
};

NS_IMPL_ISUPPORTS(FreetypeReporter, nsIMemoryReporter)

static FT_MemoryRec_ sFreetypeMemoryRecord;

gfxAndroidPlatform::gfxAndroidPlatform() {
  // A custom allocator.  It counts allocations, enabling memory reporting.
  sFreetypeMemoryRecord.user = nullptr;
  sFreetypeMemoryRecord.alloc = FreetypeReporter::Malloc;
  sFreetypeMemoryRecord.free = FreetypeReporter::Free;
  sFreetypeMemoryRecord.realloc = FreetypeReporter::Realloc;

  // These two calls are equivalent to FT_Init_FreeType(), but allow us to
  // provide a custom memory allocator.
  FT_New_Library(&sFreetypeMemoryRecord, &gPlatformFTLibrary);
  FT_Add_Default_Modules(gPlatformFTLibrary);

  Factory::SetFTLibrary(gPlatformFTLibrary);

  RegisterStrongMemoryReporter(new FreetypeReporter());

  mOffscreenFormat = GetScreenDepth() == 16 ? SurfaceFormat::R5G6B5_UINT16
                                            : SurfaceFormat::X8R8G8B8_UINT32;

  if (StaticPrefs::gfx_android_rgb16_force_AtStartup()) {
    mOffscreenFormat = SurfaceFormat::R5G6B5_UINT16;
  }
}

gfxAndroidPlatform::~gfxAndroidPlatform() {
  FT_Done_Library(gPlatformFTLibrary);
  gPlatformFTLibrary = nullptr;
  layers::AndroidHardwareBufferManager::Shutdown();
  layers::AndroidHardwareBufferApi::Shutdown();
}

void gfxAndroidPlatform::InitAcceleration() { gfxPlatform::InitAcceleration(); }

already_AddRefed<gfxASurface> gfxAndroidPlatform::CreateOffscreenSurface(
    const IntSize& aSize, gfxImageFormat aFormat) {
  if (!Factory::AllowedSurfaceSize(aSize)) {
    return nullptr;
  }

  RefPtr<gfxASurface> newSurface;
  newSurface = new gfxImageSurface(aSize, aFormat);

  return newSurface.forget();
}

static bool IsJapaneseLocale() {
  static bool sInitialized = false;
  static bool sIsJapanese = false;

  if (!sInitialized) {
    sInitialized = true;

    nsAutoCString appLocale;
    LocaleService::GetInstance()->GetAppLocaleAsBCP47(appLocale);

    const nsDependentCSubstring lang(appLocale, 0, 2);
    if (lang.EqualsLiteral("ja")) {
      sIsJapanese = true;
    } else {
      OSPreferences::GetInstance()->GetSystemLocale(appLocale);

      const nsDependentCSubstring lang(appLocale, 0, 2);
      if (lang.EqualsLiteral("ja")) {
        sIsJapanese = true;
      }
    }
  }

  return sIsJapanese;
}

void gfxAndroidPlatform::GetCommonFallbackFonts(
    uint32_t aCh, Script aRunScript, eFontPresentation aPresentation,
    nsTArray<const char*>& aFontList) {
  static const char kDroidSansJapanese[] = "Droid Sans Japanese";
  static const char kMotoyaLMaru[] = "MotoyaLMaru";
  static const char kNotoSansCJKJP[] = "Noto Sans CJK JP";
  static const char kNotoColorEmoji[] = "Noto Color Emoji";

  if (PrefersColor(aPresentation)) {
    aFontList.AppendElement(kNotoColorEmoji);
  }

  if (IS_IN_BMP(aCh)) {
    // try language-specific "Droid Sans *" and "Noto Sans *" fonts for
    // certain blocks, as most devices probably have these
    uint8_t block = (aCh >> 8) & 0xff;
    switch (block) {
      case 0x05:
        aFontList.AppendElement("Noto Sans Hebrew");
        aFontList.AppendElement("Droid Sans Hebrew");
        aFontList.AppendElement("Noto Sans Armenian");
        aFontList.AppendElement("Droid Sans Armenian");
        break;
      case 0x06:
        aFontList.AppendElement("Noto Sans Arabic");
        aFontList.AppendElement("Droid Sans Arabic");
        break;
      case 0x09:
        aFontList.AppendElement("Noto Sans Devanagari");
        aFontList.AppendElement("Noto Sans Bengali");
        aFontList.AppendElement("Droid Sans Devanagari");
        break;
      case 0x0a:
        aFontList.AppendElement("Noto Sans Gurmukhi");
        aFontList.AppendElement("Noto Sans Gujarati");
        break;
      case 0x0b:
        aFontList.AppendElement("Noto Sans Tamil");
        aFontList.AppendElement("Noto Sans Oriya");
        aFontList.AppendElement("Droid Sans Tamil");
        break;
      case 0x0c:
        aFontList.AppendElement("Noto Sans Telugu");
        aFontList.AppendElement("Noto Sans Kannada");
        break;
      case 0x0d:
        aFontList.AppendElement("Noto Sans Malayalam");
        aFontList.AppendElement("Noto Sans Sinhala");
        break;
      case 0x0e:
        aFontList.AppendElement("Noto Sans Thai");
        aFontList.AppendElement("Noto Sans Lao");
        aFontList.AppendElement("Droid Sans Thai");
        break;
      case 0x0f:
        aFontList.AppendElement("Noto Sans Tibetan");
        break;
      case 0x10:
      case 0x2d:
        aFontList.AppendElement("Noto Sans Georgian");
        aFontList.AppendElement("Droid Sans Georgian");
        break;
      case 0x12:
      case 0x13:
        aFontList.AppendElement("Noto Sans Ethiopic");
        aFontList.AppendElement("Droid Sans Ethiopic");
        break;
      case 0x21:
      case 0x23:
      case 0x24:
      case 0x26:
      case 0x27:
      case 0x29:
        aFontList.AppendElement("Noto Sans Symbols");
        break;
      case 0xf9:
      case 0xfa:
        if (IsJapaneseLocale()) {
          aFontList.AppendElement(kMotoyaLMaru);
          aFontList.AppendElement(kNotoSansCJKJP);
          aFontList.AppendElement(kDroidSansJapanese);
        }
        break;
      default:
        if (block >= 0x2e && block <= 0x9f && IsJapaneseLocale()) {
          aFontList.AppendElement(kMotoyaLMaru);
          aFontList.AppendElement(kNotoSansCJKJP);
          aFontList.AppendElement(kDroidSansJapanese);
        }
        break;
    }
  }
  // and try Droid Sans Fallback as a last resort
  aFontList.AppendElement("Droid Sans Fallback");
}

bool gfxAndroidPlatform::CreatePlatformFontList() {
  return gfxPlatformFontList::Initialize(new gfxFT2FontList);
}

void gfxAndroidPlatform::ReadSystemFontList(
    mozilla::dom::SystemFontList* aFontList) {
  gfxFT2FontList::PlatformFontList()->ReadSystemFontList(aFontList);
}

bool gfxAndroidPlatform::FontHintingEnabled() {
  // In "mobile" builds, we sometimes use non-reflow-zoom, so we
  // might not want hinting.  Let's see.

#ifdef MOZ_WIDGET_ANDROID
  // On Android, we currently only use gecko to render web
  // content that can always be be non-reflow-zoomed.  So turn off
  // hinting.
  //
  // XXX when gecko-android-java is used as an "app runtime", we may
  // want to re-enable hinting for non-browser processes there.
  //
  // If this value is changed, we must ensure that the argument passed
  // to SkInitCairoFT() in GPUParent::RecvInit() is also updated.
  return false;
#endif  //  MOZ_WIDGET_ANDROID

  // Currently, we don't have any other targets, but if/when we do,
  // decide how to handle them here.

  MOZ_ASSERT_UNREACHABLE("oops, what platform is this?");
  return gfxPlatform::FontHintingEnabled();
}

bool gfxAndroidPlatform::RequiresLinearZoom() {
#ifdef MOZ_WIDGET_ANDROID
  // On Android, we currently only use gecko to render web
  // content that can always be be non-reflow-zoomed.
  //
  // XXX when gecko-android-java is used as an "app runtime", we may
  // want to use linear zoom only for the web browser process, not other apps.
  return true;
#endif

  MOZ_ASSERT_UNREACHABLE("oops, what platform is this?");
  return gfxPlatform::RequiresLinearZoom();
}

bool gfxAndroidPlatform::CheckVariationFontSupport() {
  // Don't attempt to use variations on Android API versions up to Marshmallow,
  // because the system freetype version is too old and the parent process may
  // access it during printing (bug 1845174).
  return jni::GetAPIVersion() > 23;
}

class AndroidVsyncSource final : public VsyncSource,
                                 public widget::AndroidVsync::Observer {
 public:
  AndroidVsyncSource() : mAndroidVsync(widget::AndroidVsync::GetInstance()) {}

  bool IsVsyncEnabled() override {
    MOZ_ASSERT(NS_IsMainThread());
    return mObservingVsync;
  }

  void EnableVsync() override {
    MOZ_ASSERT(NS_IsMainThread());

    if (mObservingVsync) {
      return;
    }

    float fps = java::GeckoAppShell::GetScreenRefreshRate();
    MOZ_ASSERT(fps > 0.0f);
    mVsyncRate = TimeDuration::FromMilliseconds(1000.0 / fps);
    mAndroidVsync->RegisterObserver(this, widget::AndroidVsync::RENDER);
    mObservingVsync = true;
  }

  void DisableVsync() override {
    MOZ_ASSERT(NS_IsMainThread());

    if (!mObservingVsync) {
      return;
    }
    mAndroidVsync->UnregisterObserver(this, widget::AndroidVsync::RENDER);
    mObservingVsync = false;
  }

  TimeDuration GetVsyncRate() override { return mVsyncRate; }

  void Shutdown() override { DisableVsync(); }

  // Override for the widget::AndroidVsync::Observer method
  void OnVsync(const TimeStamp& aTimeStamp) override {
    // Use the timebase from the frame callback as the vsync time, unless it
    // is in the future.
    TimeStamp now = TimeStamp::Now();
    TimeStamp vsyncTime = aTimeStamp < now ? aTimeStamp : now;
    TimeStamp outputTime = vsyncTime + GetVsyncRate();

    NotifyVsync(vsyncTime, outputTime);
  }

  void OnMaybeUpdateRefreshRate() override {
    NS_DispatchToMainThread(
        NS_NewRunnableFunction(__func__, [self = RefPtr{this}]() {
          if (!self->mObservingVsync) {
            return;
          }
          self->DisableVsync();
          self->EnableVsync();
        }));
  }

 private:
  virtual ~AndroidVsyncSource() { DisableVsync(); }

  RefPtr<widget::AndroidVsync> mAndroidVsync;
  TimeDuration mVsyncRate;
  bool mObservingVsync = false;
};

already_AddRefed<mozilla::gfx::VsyncSource>
gfxAndroidPlatform::CreateGlobalHardwareVsyncSource() {
  RefPtr<AndroidVsyncSource> vsyncSource = new AndroidVsyncSource();
  return vsyncSource.forget();
}