C++ nsAutoPtr::get方法代码示例

// static
PLDHashOperator
nsWindowBase::CancelTouchPoints(const unsigned int& aPointerId, nsAutoPtr<PointerInfo>& aInfo, void* aUserArg)
{
  nsWindowBase* self = static_cast<nsWindowBase*>(aUserArg);
  self->InjectTouchPoint(aInfo.get()->mPointerId, aInfo.get()->mPosition, POINTER_FLAG_CANCELED);
  return (PLDHashOperator)(PL_DHASH_NEXT|PL_DHASH_REMOVE);
}

bool
RestyleTracker::GetRestyleData(Element* aElement, nsAutoPtr<RestyleData>& aData)
{
  NS_PRECONDITION(aElement->GetCrossShadowCurrentDoc() == Document(),
                  "Unexpected document; this will lead to incorrect behavior!");

  if (!aElement->HasFlag(RestyleBit())) {
    NS_ASSERTION(!aElement->HasFlag(RootBit()), "Bogus root bit?");
    return false;
  }

  mPendingRestyles.RemoveAndForget(aElement, aData);
  NS_ASSERTION(aData.get(), "Must have data if restyle bit is set");

  if (aData->mRestyleHint & eRestyle_LaterSiblings) {
    // Someone readded the eRestyle_LaterSiblings hint for this
    // element.  Leave it around for now, but remove the other restyle
    // hints and the change hint for it.  Also unset its root bit,
    // since it's no longer a root with the new restyle data.
    NS_ASSERTION(aData->mDescendants.IsEmpty(),
                 "expected descendants to be handled by now");
    RestyleData* newData = new RestyleData;
    newData->mChangeHint = nsChangeHint(0);
    newData->mRestyleHint = eRestyle_LaterSiblings;
    mPendingRestyles.Put(aElement, newData);
    aElement->UnsetFlags(RootBit());
    aData->mRestyleHint =
      nsRestyleHint(aData->mRestyleHint & ~eRestyle_LaterSiblings);
  } else {
    aElement->UnsetFlags(mRestyleBits);
  }

  return true;
}

PLDHashOperator
SpdyStream::hdrHashEnumerate(const nsACString &key,
                             nsAutoPtr<nsCString> &value,
                             void *closure)
{
  SpdyStream *self = static_cast<SpdyStream *>(closure);

  self->CompressToFrame(key);
  self->CompressToFrame(value.get());
  return PL_DHASH_NEXT;
}

nsresult
RilSocketIO::QueryReceiveBuffer(UnixSocketIOBuffer** aBuffer)
{
  MOZ_ASSERT(aBuffer);

  if (!mBuffer) {
    mBuffer = new UnixSocketRawData(MAX_READ_SIZE);
  }
  *aBuffer = mBuffer.get();

  return NS_OK;
}

nsresult
DaemonSocketIO::QueryReceiveBuffer(UnixSocketIOBuffer** aBuffer)
{
  MOZ_ASSERT(aBuffer);

  if (!mPDU) {
    /* There's only one PDU for receiving. We reuse it every time. */
    mPDU = new DaemonSocketPDU(DaemonSocketPDU::MAX_PAYLOAD_LENGTH);
  }
  *aBuffer = mPDU.get();

  return NS_OK;
}

bool
RestyleTracker::GetRestyleData(Element* aElement, nsAutoPtr<RestyleData>& aData)
{
  NS_PRECONDITION(aElement->GetComposedDoc() == Document(),
                  "Unexpected document; this will lead to incorrect behavior!");

  if (!aElement->HasFlag(RestyleBit())) {
    NS_ASSERTION(!aElement->HasFlag(RootBit()), "Bogus root bit?");
    return false;
  }

  mPendingRestyles.RemoveAndForget(aElement, aData);
  NS_ASSERTION(aData.get(), "Must have data if restyle bit is set");

  if (aData->mRestyleHint & eRestyle_LaterSiblings) {
    // Someone readded the eRestyle_LaterSiblings hint for this
    // element.  Leave it around for now, but remove the other restyle
    // hints and the change hint for it.  Also unset its root bit,
    // since it's no longer a root with the new restyle data.

    // During a normal restyle, we should have already processed the
    // mDescendants array the last time we processed the restyle
    // for this element.  But in RebuildAllStyleData, we don't initially
    // expand out eRestyle_LaterSiblings, so we can get in here the
    // first time we need to process a restyle for this element.  In that
    // case, it's fine for us to have a non-empty mDescendants, since
    // we know that RebuildAllStyleData adds eRestyle_ForceDescendants
    // and we're guaranteed we'll restyle the entire tree.
    NS_ASSERTION(mRestyleManager->InRebuildAllStyleData() ||
                 aData->mDescendants.IsEmpty(),
                 "expected descendants to be handled by now");

    RestyleData* newData = new RestyleData;
    newData->mChangeHint = nsChangeHint(0);
    newData->mRestyleHint = eRestyle_LaterSiblings;
    mPendingRestyles.Put(aElement, newData);
    aElement->UnsetFlags(RootBit());
    aData->mRestyleHint =
      nsRestyleHint(aData->mRestyleHint & ~eRestyle_LaterSiblings);
  } else {
    aElement->UnsetFlags(mRestyleBits);
  }

  return true;
}

static void GetStatsForLongTermStorage_s(
    nsAutoPtr<RTCStatsQuery> query) {

  MOZ_ASSERT(query);

  nsresult rv = PeerConnectionImpl::ExecuteStatsQuery_s(query.get());

  // Check whether packets were dropped due to rate limiting during
  // this call. (These calls must be made on STS)
  unsigned char rate_limit_bit_pattern = 0;
  if (!mozilla::nr_socket_short_term_violation_time().IsNull() &&
      mozilla::nr_socket_short_term_violation_time() >= query->iceStartTime) {
    rate_limit_bit_pattern |= 1;
  }
  if (!mozilla::nr_socket_long_term_violation_time().IsNull() &&
      mozilla::nr_socket_long_term_violation_time() >= query->iceStartTime) {
    rate_limit_bit_pattern |= 2;
  }

  if (query->failed) {
    Telemetry::Accumulate(
        Telemetry::WEBRTC_STUN_RATE_LIMIT_EXCEEDED_BY_TYPE_GIVEN_FAILURE,
        rate_limit_bit_pattern);
  } else {
    Telemetry::Accumulate(
        Telemetry::WEBRTC_STUN_RATE_LIMIT_EXCEEDED_BY_TYPE_GIVEN_SUCCESS,
        rate_limit_bit_pattern);
  }

  // Even if Telemetry::Accumulate is threadsafe, we still need to send the
  // query back to main, since that is where it must be destroyed.
  NS_DispatchToMainThread(
      WrapRunnableNM(
          &StoreLongTermICEStatisticsImpl_m,
          rv,
          query),
      NS_DISPATCH_NORMAL);
}

bool nsWindow::OnPaint(HDC aDC, uint32_t aNestingLevel)
{
  // We never have reentrant paint events, except when we're running our RPC
  // windows event spin loop. If we don't trap for this, we'll try to paint,
  // but view manager will refuse to paint the surface, resulting is black
  // flashes on the plugin rendering surface.
  if (mozilla::ipc::RPCChannel::IsSpinLoopActive() && mPainting)
    return false;

  if (mWindowType == eWindowType_plugin) {

    /**
     * After we CallUpdateWindow to the child, occasionally a WM_PAINT message
     * is posted to the parent event loop with an empty update rect. Do a
     * dummy paint so that Windows stops dispatching WM_PAINT in an inifinite
     * loop. See bug 543788.
     */
    RECT updateRect;
    if (!GetUpdateRect(mWnd, &updateRect, FALSE) ||
        (updateRect.left == updateRect.right &&
         updateRect.top == updateRect.bottom)) {
      PAINTSTRUCT ps;
      BeginPaint(mWnd, &ps);
      EndPaint(mWnd, &ps);
      return true;
    }

    PluginInstanceParent* instance = reinterpret_cast<PluginInstanceParent*>(
      ::GetPropW(mWnd, L"PluginInstanceParentProperty"));
    if (instance) {
      unused << instance->CallUpdateWindow();
    } else {
      // We should never get here since in-process plugins should have
      // subclassed our HWND and handled WM_PAINT, but in some cases that
      // could fail. Return without asserting since it's not our fault.
      NS_WARNING("Plugin failed to subclass our window");
    }

    ValidateRect(mWnd, NULL);
    return true;
  }

  // Do an early async composite so that we at least have something on screen
  // in the right place, even if the content is out of date.
  if (GetLayerManager()->GetBackendType() == LAYERS_CLIENT &&
      mCompositorParent) {
    mCompositorParent->ScheduleRenderOnCompositorThread();
  }

  nsIWidgetListener* listener = GetPaintListener();
  if (listener) {
    listener->WillPaintWindow(this);
  }
  // Re-get the listener since the will paint notification may have killed it.
  listener = GetPaintListener();
  if (!listener)
    return false;

  bool result = true;
  PAINTSTRUCT ps;

#ifdef MOZ_XUL
  if (!aDC && (eTransparencyTransparent == mTransparencyMode))
  {
    // For layered translucent windows all drawing should go to memory DC and no
    // WM_PAINT messages are normally generated. To support asynchronous painting
    // we force generation of WM_PAINT messages by invalidating window areas with
    // RedrawWindow, InvalidateRect or InvalidateRgn function calls.
    // BeginPaint/EndPaint must be called to make Windows think that invalid area
    // is painted. Otherwise it will continue sending the same message endlessly.
    ::BeginPaint(mWnd, &ps);
    ::EndPaint(mWnd, &ps);

    aDC = mMemoryDC;
  }
#endif

  mPainting = true;

#ifdef WIDGET_DEBUG_OUTPUT
  HRGN debugPaintFlashRegion = NULL;
  HDC debugPaintFlashDC = NULL;

  if (debug_WantPaintFlashing())
  {
    debugPaintFlashRegion = ::CreateRectRgn(0, 0, 0, 0);
    ::GetUpdateRgn(mWnd, debugPaintFlashRegion, TRUE);
    debugPaintFlashDC = ::GetDC(mWnd);
  }
#endif // WIDGET_DEBUG_OUTPUT

  HDC hDC = aDC ? aDC : (::BeginPaint(mWnd, &ps));
  if (!IsRenderMode(gfxWindowsPlatform::RENDER_DIRECT2D)) {
    mPaintDC = hDC;
  }

#ifdef MOZ_XUL
  bool forceRepaint = aDC || (eTransparencyTransparent == mTransparencyMode);
#else
  bool forceRepaint = NULL != aDC;
//.........这里部分代码省略.........

/* [noscript] attribute SpdyPushCachePtr spdyPushCache; */
NS_IMETHODIMP
nsLoadGroupConnectionInfo::GetSpdyPushCache(mozilla::net::SpdyPushCache **aSpdyPushCache)
{
    *aSpdyPushCache = mSpdyCache.get();
    return NS_OK;
}

//.........这里部分代码省略.........
    mPaintDC = hDC;
  }

#ifdef MOZ_XUL
  PRBool forceRepaint = aDC || (eTransparencyTransparent == mTransparencyMode);
#else
  PRBool forceRepaint = NULL != aDC;
#endif
  nsCOMPtr<nsIRegion> paintRgnWin = GetRegionToPaint(forceRepaint, ps, hDC);

  if (paintRgnWin &&
      !paintRgnWin->IsEmpty() &&
      mEventCallback)
  {
    // generate the event and call the event callback
    nsPaintEvent event(PR_TRUE, NS_PAINT, this);

    InitEvent(event);

    event.region = paintRgnWin;
    event.rect = nsnull;
 
    // Should probably pass in a real region here, using GetRandomRgn
    // http://msdn.microsoft.com/library/default.asp?url=/library/en-us/gdi/clipping_4q0e.asp

#ifdef WIDGET_DEBUG_OUTPUT
    debug_DumpPaintEvent(stdout,
                         this,
                         &event,
                         nsCAutoString("noname"),
                         (PRInt32) mWnd);
#endif // WIDGET_DEBUG_OUTPUT

    nsRefPtr<gfxASurface> targetSurface;

#if defined(MOZ_XUL)
    // don't support transparency for non-GDI rendering, for now
    if (IsRenderMode(gfxWindowsPlatform::RENDER_GDI) && eTransparencyTransparent == mTransparencyMode) {
      if (mTransparentSurface == nsnull)
        SetupTranslucentWindowMemoryBitmap(mTransparencyMode);
      targetSurface = mTransparentSurface;
    }
#endif

    nsRefPtr<gfxWindowsSurface> targetSurfaceWin;
    if (!targetSurface &&
        IsRenderMode(gfxWindowsPlatform::RENDER_GDI))
    {
      targetSurfaceWin = new gfxWindowsSurface(hDC);
      targetSurface = targetSurfaceWin;
    }
#ifdef CAIRO_HAS_D2D_SURFACE
    if (!targetSurface &&
        IsRenderMode(gfxWindowsPlatform::RENDER_DIRECT2D))
    {
      if (!mD2DWindowSurface) {
        mD2DWindowSurface = new gfxD2DSurface(mWnd);
      }
      targetSurface = mD2DWindowSurface;
    }
#endif
#ifdef CAIRO_HAS_DDRAW_SURFACE
    nsRefPtr<gfxDDrawSurface> targetSurfaceDDraw;
    if (!targetSurface &&
        (IsRenderMode(gfxWindowsPlatform::RENDER_DDRAW) ||
         IsRenderMode(gfxWindowsPlatform::RENDER_DDRAW_GL)))