/// <summary>
/// Handle RTUpdate -- one of the repeating messages emitted by Presenter 2.
/// </summary>
/// <param name="rtu"></param>
private void WebViewerReceiveUpdate(ArchiveRTNav.RTUpdate rtu)
{
int internalSlideIndex = slideMap.GetMapping(rtu.SlideIndex, rtu.DeckGuid);
/// Fetch slide images for any slide in a Presentation deck
/// and any slide in a StudentSubmission deck.
/// Note: it used to be that rtu.SlideIndex==0 in the SS case was
/// a whiteboard slide. This does not seem to be true anymore. For CP3 we use explicit DeckTypeAssociation.
if ((rtu.DeckType == (Int32)DeckTypeEnum.Presentation) ||
((rtu.DeckType == (Int32)DeckTypeEnum.StudentSubmission) && (rtu.DeckTypeAssociation != (Int32)DeckTypeEnum.Whiteboard)) ||
((rtu.DeckType == (Int32)DeckTypeEnum.QuickPoll) && (rtu.DeckTypeAssociation != (Int32)DeckTypeEnum.Whiteboard)))
{
Slide tmpSlide = slideDeck.GetSlide(internalSlideIndex);
if ((tmpSlide == null) || (tmpSlide.Image == null))
{
ThreadPool.QueueUserWorkItem(new WaitCallback(GetWebImageThread2), rtu);
}
else
{
DisplaySlideIndex(internalSlideIndex);
}
}
else //No background image -- this is a whiteboard slide
{
DisplaySlideIndex(internalSlideIndex);
}
//if slide size is not up to date, fix that.
//Console.WriteLine("WebviewerReceiveRTUpdate new slide size=" + rtu.SlideSize.ToString() +
// " current slide size=" + currentSlideSize.ToString());
if (currentSlideSize != rtu.SlideSize)
{
currentSlideSize = rtu.SlideSize;
this.screenConfiguration = new ScreenConfiguration();
this.screenConfiguration.SlideSize = rtu.SlideSize;
AcceptScreenConfiguration();
}
//Update background color if necessary.
if (currentBackgroundColor != rtu.BackgroundColor)
{
mySlideView.LayerPanel.BackColor = rtu.BackgroundColor;
currentBackgroundColor = rtu.BackgroundColor;
}
//Update scroll position
workQueue.SetScrollPos(internalSlideIndex, (float)rtu.ScrollPosition, (float)rtu.ScrollExtent);
if (workQueue.StartScrolling())
{
ThreadPool.QueueUserWorkItem(new WaitCallback(ScrollWorker));
}
}
/// <summary>
/// The Presenter 2 version of ShowSlide
/// </summary>
/// <param name="rtu"></param>
public void ShowSlide(ArchiveRTNav.RTUpdate rtu)
{
WebViewerReceiveUpdate(rtu);
}