C++ ContentClientRemote::GetIPDLActor方法代码示例

void
BasicShadowableThebesLayer::PaintBuffer(gfxContext* aContext,
                                        const nsIntRegion& aRegionToDraw,
                                        const nsIntRegion& aExtendedRegionToDraw,
                                        const nsIntRegion& aRegionToInvalidate,
                                        bool aDidSelfCopy,
                                        LayerManager::DrawThebesLayerCallback aCallback,
                                        void* aCallbackData)
{
  ContentClientRemote* contentClientRemote = static_cast<ContentClientRemote*>(mContentClient.get());
  MOZ_ASSERT(contentClientRemote->GetIPDLActor() || !HasShadow());

  // NB: this just throws away the entire valid region if there are
  // too many rects.
  mValidRegion.SimplifyInward(8);

  Base::PaintBuffer(aContext,
                    aRegionToDraw, aExtendedRegionToDraw, aRegionToInvalidate,
                    aDidSelfCopy,
                    aCallback, aCallbackData);
  if (!HasShadow() || BasicManager()->IsTransactionIncomplete()) {
    return;
  }

  // Hold(this) ensures this layer is kept alive through the current transaction
  // The ContentClient assumes this layer is kept alive (e.g., in CreateBuffer,
  // DestroyThebesBuffer), so deleting this Hold for whatever reason will break things.
  BasicManager()->Hold(this);
  contentClientRemote->Updated(aRegionToDraw,
                               mVisibleRegion,
                               aDidSelfCopy);
}

void
ClientThebesLayer::PaintBuffer(gfxContext* aContext,
                               const nsIntRegion& aRegionToDraw,
                               const nsIntRegion& aExtendedRegionToDraw,
                               const nsIntRegion& aRegionToInvalidate,
                               bool aDidSelfCopy, DrawRegionClip aClip)
{
  ContentClientRemote* contentClientRemote = static_cast<ContentClientRemote*>(mContentClient.get());
  MOZ_ASSERT(contentClientRemote->GetIPDLActor());

  // NB: this just throws away the entire valid region if there are
  // too many rects.
  mValidRegion.SimplifyInward(8);

  if (!ClientManager()->GetThebesLayerCallback()) {
    ClientManager()->SetTransactionIncomplete();
    return;
  }
  ClientManager()->GetThebesLayerCallback()(this,
                                            aContext,
                                            aExtendedRegionToDraw,
                                            aClip,
                                            aRegionToInvalidate,
                                            ClientManager()->GetThebesLayerCallbackData());

  // Everything that's visible has been validated. Do this instead of just
  // OR-ing with aRegionToDraw, since that can lead to a very complex region
  // here (OR doesn't automatically simplify to the simplest possible
  // representation of a region.)
  nsIntRegion tmp;
  tmp.Or(mVisibleRegion, aExtendedRegionToDraw);
  mValidRegion.Or(mValidRegion, tmp);

  // Hold(this) ensures this layer is kept alive through the current transaction
  // The ContentClient assumes this layer is kept alive (e.g., in CreateBuffer,
  // DestroyThebesBuffer), so deleting this Hold for whatever reason will break things.
  ClientManager()->Hold(this);
  contentClientRemote->Updated(aRegionToDraw,
                               mVisibleRegion,
                               aDidSelfCopy);
}

void
ClientPaintedLayer::PaintThebes()
{
  PROFILER_LABEL("ClientPaintedLayer", "PaintThebes",
    js::ProfileEntry::Category::GRAPHICS);

  NS_ASSERTION(ClientManager()->InDrawing(),
               "Can only draw in drawing phase");
  
  uint32_t flags = RotatedContentBuffer::PAINT_CAN_DRAW_ROTATED;
#ifndef MOZ_IGNORE_PAINT_WILL_RESAMPLE
  if (ClientManager()->CompositorMightResample()) {
    flags |= RotatedContentBuffer::PAINT_WILL_RESAMPLE;
  }
  if (!(flags & RotatedContentBuffer::PAINT_WILL_RESAMPLE)) {
    if (MayResample()) {
      flags |= RotatedContentBuffer::PAINT_WILL_RESAMPLE;
    }
  }
#endif
  PaintState state =
    mContentClient->BeginPaintBuffer(this, flags);
  mValidRegion.Sub(mValidRegion, state.mRegionToInvalidate);

  if (!state.mRegionToDraw.IsEmpty() && !ClientManager()->GetPaintedLayerCallback()) {
    ClientManager()->SetTransactionIncomplete();
    return;
  }

  // The area that became invalid and is visible needs to be repainted
  // (this could be the whole visible area if our buffer switched
  // from RGB to RGBA, because we might need to repaint with
  // subpixel AA)
  state.mRegionToInvalidate.And(state.mRegionToInvalidate,
                                GetEffectiveVisibleRegion());

  bool didUpdate = false;
  RotatedContentBuffer::DrawIterator iter;
  while (DrawTarget* target = mContentClient->BorrowDrawTargetForPainting(state, &iter)) {
    SetAntialiasingFlags(this, target);

    nsRefPtr<gfxContext> ctx = gfxContext::ContextForDrawTarget(target);

    ClientManager()->GetPaintedLayerCallback()(this,
                                              ctx,
                                              iter.mDrawRegion,
                                              state.mClip,
                                              state.mRegionToInvalidate,
                                              ClientManager()->GetPaintedLayerCallbackData());

    ctx = nullptr;
    mContentClient->ReturnDrawTargetToBuffer(target);
    didUpdate = true;
  }

  if (didUpdate) {
    Mutated();

    mValidRegion.Or(mValidRegion, state.mRegionToDraw);

    ContentClientRemote* contentClientRemote = static_cast<ContentClientRemote*>(mContentClient.get());
    MOZ_ASSERT(contentClientRemote->GetIPDLActor());

    // Hold(this) ensures this layer is kept alive through the current transaction
    // The ContentClient assumes this layer is kept alive (e.g., in CreateBuffer),
    // so deleting this Hold for whatever reason will break things.
    ClientManager()->Hold(this);
    contentClientRemote->Updated(state.mRegionToDraw,
                                 mVisibleRegion,
                                 state.mDidSelfCopy);
  }
}