DXR is a code search and navigation tool aimed at making sense of large projects. It supports full-text and regex searches as well as structural queries.

Header

Mercurial (4a108e94d3e2)

VCS Links

Line Code
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
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* vim: set ts=8 sts=4 et sw=4 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/CountingAllocatorBase.h"
#include "mozilla/Preferences.h"

#include "gfx2DGlue.h"
#include "gfxFT2FontList.h"
#include "gfxImageSurface.h"
#include "gfxTextRun.h"
#include "mozilla/dom/ContentChild.h"
#include "nsXULAppAPI.h"
#include "nsIScreen.h"
#include "nsIScreenManager.h"
#include "nsILocaleService.h"
#include "nsServiceManagerUtils.h"
#include "gfxPrefs.h"
#include "cairo.h"
#include "VsyncSource.h"

#ifdef MOZ_WIDGET_ANDROID
#include "AndroidBridge.h"
#endif

#ifdef MOZ_WIDGET_GONK
#include <cutils/properties.h>
#include "mozilla/layers/CompositorParent.h"
#include "HwcComposer2D.h"
#endif

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

using namespace mozilla;
using namespace mozilla::dom;
using namespace mozilla::gfx;

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)
    {
        return MOZ_COLLECT_REPORT(
            "explicit/freetype", KIND_HEAP, UNITS_BYTES, MemoryAllocated(),
            "Memory used by Freetype.");
    }
};

NS_IMPL_ISUPPORTS(FreetypeReporter, nsIMemoryReporter)

template<> Atomic<size_t> CountingAllocatorBase<FreetypeReporter>::sAmount(0);

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);

    RegisterStrongMemoryReporter(new FreetypeReporter());

    nsCOMPtr<nsIScreenManager> screenMgr = do_GetService("@mozilla.org/gfx/screenmanager;1");
    nsCOMPtr<nsIScreen> screen;
    screenMgr->GetPrimaryScreen(getter_AddRefs(screen));
    mScreenDepth = 24;
    screen->GetColorDepth(&mScreenDepth);

    mOffscreenFormat = mScreenDepth == 16
                       ? gfxImageFormat::RGB16_565
                       : gfxImageFormat::RGB24;

    if (gfxPrefs::AndroidRGB16Force()) {
        mOffscreenFormat = gfxImageFormat::RGB16_565;
    }

#ifdef MOZ_WIDGET_GONK
    char propQemu[PROPERTY_VALUE_MAX];
    property_get("ro.kernel.qemu", propQemu, "");
    mIsInGonkEmulator = !strncmp(propQemu, "1", 1);
#endif
}

gfxAndroidPlatform::~gfxAndroidPlatform()
{
    FT_Done_Library(gPlatformFTLibrary);
    gPlatformFTLibrary = nullptr;
}

already_AddRefed<gfxASurface>
gfxAndroidPlatform::CreateOffscreenSurface(const IntSize& size,
                                           gfxContentType contentType)
{
    nsRefPtr<gfxASurface> newSurface;
    newSurface = new gfxImageSurface(ThebesIntSize(size),
                                     OptimalFormatForContent(contentType));

    return newSurface.forget();
}

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

    if (!sInitialized) {
        sInitialized = true;

        do { // to allow 'break' to abandon this block if a call fails
            nsresult rv;
            nsCOMPtr<nsILocaleService> ls =
                do_GetService(NS_LOCALESERVICE_CONTRACTID, &rv);
            if (NS_FAILED(rv)) {
                break;
            }
            nsCOMPtr<nsILocale> appLocale;
            rv = ls->GetApplicationLocale(getter_AddRefs(appLocale));
            if (NS_FAILED(rv)) {
                break;
            }
            nsString localeStr;
            rv = appLocale->
                GetCategory(NS_LITERAL_STRING(NSILOCALE_MESSAGE), localeStr);
            if (NS_FAILED(rv)) {
                break;
            }
            const nsAString& lang = nsDependentSubstring(localeStr, 0, 2);
            if (lang.EqualsLiteral("ja")) {
                sIsJapanese = true;
            }
        } while (false);
    }

    return sIsJapanese;
}

void
gfxAndroidPlatform::GetCommonFallbackFonts(uint32_t aCh, uint32_t aNextCh,
                                           int32_t aRunScript,
                                           nsTArray<const char*>& aFontList)
{
    static const char kDroidSansJapanese[] = "Droid Sans Japanese";
    static const char kMotoyaLMaru[] = "MotoyaLMaru";

    if (aNextCh == 0xfe0fu) {
        // if char is followed by VS16, try for a color emoji glyph
        aFontList.AppendElement("Noto Color Emoji");
    }

    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("Droid Sans Hebrew");
            aFontList.AppendElement("Droid Sans Armenian");
            break;
        case 0x06:
            aFontList.AppendElement("Droid Sans Arabic");
            break;
        case 0x09:
            aFontList.AppendElement("Noto Sans Devanagari");
            aFontList.AppendElement("Droid Sans Devanagari");
            break;
        case 0x0b:
            aFontList.AppendElement("Noto Sans Tamil");
            aFontList.AppendElement("Droid Sans Tamil");
            break;
        case 0x0e:
            aFontList.AppendElement("Noto Sans Thai");
            aFontList.AppendElement("Droid Sans Thai");
            break;
        case 0x10: case 0x2d:
            aFontList.AppendElement("Droid Sans Georgian");
            break;
        case 0x12: case 0x13:
            aFontList.AppendElement("Droid Sans Ethiopic");
            break;
        case 0xf9: case 0xfa:
            if (IsJapaneseLocale()) {
                aFontList.AppendElement(kMotoyaLMaru);
                aFontList.AppendElement(kDroidSansJapanese);
            }
            break;
        default:
            if (block >= 0x2e && block <= 0x9f && IsJapaneseLocale()) {
                aFontList.AppendElement(kMotoyaLMaru);
                aFontList.AppendElement(kDroidSansJapanese);
            }
            break;
        }
    }
    // and try Droid Sans Fallback as a last resort
    aFontList.AppendElement("Droid Sans Fallback");
}

nsresult
gfxAndroidPlatform::GetFontList(nsIAtom *aLangGroup,
                                const nsACString& aGenericFamily,
                                nsTArray<nsString>& aListOfFonts)
{
    gfxPlatformFontList::PlatformFontList()->GetFontList(aLangGroup,
                                                         aGenericFamily,
                                                         aListOfFonts);
    return NS_OK;
}

void
gfxAndroidPlatform::GetFontList(InfallibleTArray<FontListEntry>* retValue)
{
    gfxFT2FontList::PlatformFontList()->GetFontList(retValue);
}

nsresult
gfxAndroidPlatform::UpdateFontList()
{
    gfxPlatformFontList::PlatformFontList()->UpdateFontList();
    return NS_OK;
}

nsresult
gfxAndroidPlatform::GetStandardFamilyName(const nsAString& aFontName, nsAString& aFamilyName)
{
    gfxPlatformFontList::PlatformFontList()->GetStandardFamilyName(aFontName, aFamilyName);
    return NS_OK;
}

gfxPlatformFontList*
gfxAndroidPlatform::CreatePlatformFontList()
{
    gfxPlatformFontList* list = new gfxFT2FontList();
    if (NS_SUCCEEDED(list->InitFontList())) {
        return list;
    }
    gfxPlatformFontList::Shutdown();
    return nullptr;
}

bool
gfxAndroidPlatform::IsFontFormatSupported(nsIURI *aFontURI, uint32_t aFormatFlags)
{
    // check for strange format flags
    NS_ASSERTION(!(aFormatFlags & gfxUserFontSet::FLAG_FORMAT_NOT_USED),
                 "strange font format hint set");

    // accept supported formats
    if (aFormatFlags & gfxUserFontSet::FLAG_FORMATS_COMMON) {
        return true;
    }

    // reject all other formats, known and unknown
    if (aFormatFlags != 0) {
        return false;
    }

    // no format hint set, need to look at data
    return true;
}

gfxFontGroup *
gfxAndroidPlatform::CreateFontGroup(const FontFamilyList& aFontFamilyList,
                                    const gfxFontStyle *aStyle,
                                    gfxUserFontSet* aUserFontSet)
{
    return new gfxFontGroup(aFontFamilyList, aStyle, aUserFontSet);
}

FT_Library
gfxAndroidPlatform::GetFTLibrary()
{
    return gPlatformFTLibrary;
}

gfxFontEntry*
gfxAndroidPlatform::LookupLocalFont(const nsAString& aFontName,
                                    uint16_t aWeight,
                                    int16_t aStretch,
                                    bool aItalic)
{
    return gfxPlatformFontList::PlatformFontList()->LookupLocalFont(aFontName,
                                                                    aWeight,
                                                                    aStretch,
                                                                    aItalic);
}

gfxFontEntry* 
gfxAndroidPlatform::MakePlatformFont(const nsAString& aFontName,
                                     uint16_t aWeight,
                                     int16_t aStretch,
                                     bool aItalic,
                                     const uint8_t* aFontData,
                                     uint32_t aLength)
{
    return gfxPlatformFontList::PlatformFontList()->MakePlatformFont(aFontName,
                                                                     aWeight,
                                                                     aStretch,
                                                                     aItalic,
                                                                     aFontData,
                                                                     aLength);
}

TemporaryRef<ScaledFont>
gfxAndroidPlatform::GetScaledFontForFont(DrawTarget* aTarget, gfxFont *aFont)
{
    return GetScaledFontForFontWithCairoSkia(aTarget, aFont);
}

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

#ifdef MOZ_USING_ANDROID_JAVA_WIDGETS
    // On android-java, 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.
    return false;
#endif //  MOZ_USING_ANDROID_JAVA_WIDGETS

#ifdef MOZ_WIDGET_GONK
    // On B2G, the UX preference is currently to keep hinting disabled
    // for all text (see bug 829523).
    return false;
#endif

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

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

bool
gfxAndroidPlatform::RequiresLinearZoom()
{
#ifdef MOZ_USING_ANDROID_JAVA_WIDGETS
    // On android-java, 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 treat it like B2G and use linear zoom only for the web
    // browser process, not other apps.
    return true;
#endif

#ifdef MOZ_WIDGET_GONK
    // On B2G, we need linear zoom for the browser, but otherwise prefer
    // the improved glyph spacing that results from respecting the device
    // pixel resolution for glyph layout (see bug 816614).
    return XRE_GetProcessType() == GeckoProcessType_Content &&
           ContentChild::GetSingleton()->IsForBrowser();
#endif

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

int
gfxAndroidPlatform::GetScreenDepth() const
{
    return mScreenDepth;
}

bool
gfxAndroidPlatform::UseAcceleratedSkiaCanvas()
{
    return HaveChoiceOfHWAndSWCanvas() && gfxPlatform::UseAcceleratedSkiaCanvas();
}

bool gfxAndroidPlatform::HaveChoiceOfHWAndSWCanvas()
{
#ifdef MOZ_WIDGET_ANDROID
    if (AndroidBridge::Bridge()->GetAPIVersion() < 11) {
        // It's slower than software due to not having a compositing fast path
        return false;
    }
#endif
    return gfxPlatform::HaveChoiceOfHWAndSWCanvas();
}

#ifdef MOZ_WIDGET_GONK
class GonkVsyncSource final : public VsyncSource
{
public:
  GonkVsyncSource()
  {
  }

  virtual Display& GetGlobalDisplay() override
  {
    return mGlobalDisplay;
  }

  class GonkDisplay final : public VsyncSource::Display
  {
  public:
    GonkDisplay() : mVsyncEnabled(false)
    {
    }

    ~GonkDisplay()
    {
      DisableVsync();
    }

    virtual void EnableVsync() override
    {
      MOZ_ASSERT(NS_IsMainThread());
      if (IsVsyncEnabled()) {
        return;
      }
      mVsyncEnabled = HwcComposer2D::GetInstance()->EnableVsync(true);
    }

    virtual void DisableVsync() override
    {
      MOZ_ASSERT(NS_IsMainThread());
      if (!IsVsyncEnabled()) {
        return;
      }
      mVsyncEnabled = HwcComposer2D::GetInstance()->EnableVsync(false);
    }

    virtual bool IsVsyncEnabled() override
    {
      MOZ_ASSERT(NS_IsMainThread());
      return mVsyncEnabled;
    }
  private:
    bool mVsyncEnabled;
  }; // GonkDisplay

private:
  virtual ~GonkVsyncSource()
  {
  }

  GonkDisplay mGlobalDisplay;
}; // GonkVsyncSource
#endif

already_AddRefed<mozilla::gfx::VsyncSource>
gfxAndroidPlatform::CreateHardwareVsyncSource()
{
#ifdef MOZ_WIDGET_GONK
    nsRefPtr<GonkVsyncSource> vsyncSource = new GonkVsyncSource();
    VsyncSource::Display& display = vsyncSource->GetGlobalDisplay();
    display.EnableVsync();
    if (!display.IsVsyncEnabled()) {
        NS_WARNING("Error enabling gonk vsync. Falling back to software vsync\n");
        return gfxPlatform::CreateHardwareVsyncSource();
    }
    display.DisableVsync();
    return vsyncSource.forget();
#else
    NS_WARNING("Hardware vsync not supported on android yet");
    return nullptr;
#endif
}