tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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InlineTranslator.cpp (2694B)

      1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
      2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
      3 /* This Source Code Form is subject to the terms of the Mozilla Public
      4 * License, v. 2.0. If a copy of the MPL was not distributed with this
      5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
      6 
      7 #include "InlineTranslator.h"
      8 #include "RecordedEventImpl.h"
      9 
     10 #include "mozilla/gfx/RecordingTypes.h"
     11 
     12 using namespace mozilla::gfx;
     13 
     14 namespace mozilla::gfx {
     15 
     16 InlineTranslator::InlineTranslator() : mFontContext(nullptr) {}
     17 
     18 InlineTranslator::InlineTranslator(DrawTarget* aDT, void* aFontContext)
     19    : mBaseDT(aDT), mFontContext(aFontContext) {}
     20 
     21 bool InlineTranslator::TranslateRecording(char* aData, size_t aLen) {
     22  MemReader reader(aData, aLen);
     23 
     24  uint32_t magicInt;
     25  ReadElement(reader, magicInt);
     26  if (magicInt != mozilla::gfx::kMagicInt) {
     27    mError = "Magic";
     28    return false;
     29  }
     30 
     31  uint16_t majorRevision;
     32  ReadElement(reader, majorRevision);
     33  if (majorRevision != kMajorRevision) {
     34    mError = "Major";
     35    return false;
     36  }
     37 
     38  uint16_t minorRevision;
     39  ReadElement(reader, minorRevision);
     40  if (minorRevision > kMinorRevision) {
     41    mError = "Minor";
     42    return false;
     43  }
     44 
     45  uint8_t eventType = RecordedEvent::EventType::INVALID;
     46  ReadElement(reader, eventType);
     47  while (reader.good()) {
     48    bool success = RecordedEvent::DoWithEvent(
     49        reader, static_cast<RecordedEvent::EventType>(eventType),
     50        [&](RecordedEvent* recordedEvent) -> bool {
     51          // Make sure that the whole event was read from the stream
     52          // successfully.
     53          if (!reader.good()) {
     54            mError = " READ";
     55            return false;
     56          }
     57 
     58          if (!recordedEvent->PlayEvent(this)) {
     59            mError = " PLAY";
     60            return false;
     61          }
     62 
     63          return true;
     64        });
     65    if (!success) {
     66      mError = RecordedEvent::GetEventName(
     67                   static_cast<RecordedEvent::EventType>(eventType)) +
     68               mError;
     69      return false;
     70    }
     71 
     72    ReadElement(reader, eventType);
     73  }
     74 
     75  return true;
     76 }
     77 
     78 already_AddRefed<DrawTarget> InlineTranslator::CreateDrawTarget(
     79    ReferencePtr aRefPtr, const gfx::IntSize& aSize,
     80    gfx::SurfaceFormat aFormat) {
     81  MOZ_ASSERT(mBaseDT, "mBaseDT has not been initialized.");
     82 
     83  RefPtr<DrawTarget> drawTarget = mBaseDT;
     84  AddDrawTarget(aRefPtr, drawTarget);
     85  return drawTarget.forget();
     86 }
     87 
     88 already_AddRefed<SourceSurface> InlineTranslator::LookupExternalSurface(
     89    uint64_t aKey) {
     90  if (!mExternalSurfaces) {
     91    return nullptr;
     92  }
     93  RefPtr<SourceSurface> surface = mExternalSurfaces->Get(aKey);
     94  return surface.forget();
     95 }
     96 
     97 }  // namespace mozilla::gfx