C++ (Cpp) FrameMetrics::GetIsRoot Examples

Example #1

File: APZCCallbackHandler.cpp Project: Acidburn0zzz/tor-browser

void
APZCCallbackHandler::RequestContentRepaint(const FrameMetrics& aFrameMetrics)
{
    MOZ_ASSERT(NS_IsMainThread());
    MOZ_ASSERT(aFrameMetrics.GetScrollId() != FrameMetrics::NULL_SCROLL_ID);

    if (aFrameMetrics.GetIsRoot()) {
        nsIDOMWindowUtils* utils = GetDOMWindowUtils();
        if (utils && APZCCallbackHelper::HasValidPresShellId(utils, aFrameMetrics)) {
            FrameMetrics metrics = aFrameMetrics;
            APZCCallbackHelper::UpdateRootFrame(utils, metrics);
        }
    } else {
        // aFrameMetrics.mIsRoot is false, so we are trying to update a subframe.
        // This requires special handling.
        nsCOMPtr<nsIContent> content = nsLayoutUtils::FindContentFor(aFrameMetrics.GetScrollId());
        if (content) {
            FrameMetrics newSubFrameMetrics(aFrameMetrics);
            APZCCallbackHelper::UpdateSubFrame(content, newSubFrameMetrics);
        }
    }
}