/// <summary>
/// On stylus-down we record initial ink packets, stroke ID and Tablet properties. Don't return any ink messages yet.
/// </summary>
/// <param name="rtissd"></param>
/// <remarks>
/// By definition CP3 real-time ink is ink that only exists during the act of inking, then is promptly deleted. The static
/// completed strokes are created and deleted by separate messages (InkSheetStrokesAddedMessage/...DeletedMessage).
/// CP3 generates three types of real-time ink messages: stylus down, packets, and stylus up. We translate the accumulated
/// packets into ink strokes (using a constant ID, so that each RT ink message will replace the previous one on WebViewer),
/// then on stylus up, we delete the last RT stroke, and a completed static ink stroke is added by InkSheetStrokesAddedMessage.
/// By definition, real-time messages may be dropped by the CP3 sender, so we need to design with this expectation.
/// The only serious impact of lost RT messages is that they may cause stray RT ink to remain after
/// the static ink is deleted. To work around this, we will keep a list of the RT ink strokes which have been
/// added, but not yet deleted, then on InkSheetStrokesDeleted, we will examine the list, and generate deletes for any strays.
/// </remarks>
internal void AddRealTimeInkSheetStylusDown(UW.ClassroomPresenter.Network.Messages.Presentation.RealTimeInkSheetStylusDownMessage rtissd)
{
//Debug.WriteLine("***** Realtime Ink stylus down StrokeID=" + rtissd.StrokeId.ToString() + "; stylusId=" + rtissd.StylusId.ToString());
// Store the packets array. In CP3 they use a hashtable keyed on the stylusId, but we can probably just assume one int[].
// Also store the current stroke id so that we won't apply the wrong packets if a message is lost.
this.previousRealTimePackets = rtissd.Packets;
this.previousRealTimeStroke = rtissd.StrokeId;
this.previousTabletProperties = rtissd.TabletProperties.CreateTabletPropertyDescriptionCollection();
//For now we assume only one stylus.
}
private void HandleStylusDownHelper(object sender, int stylusId, int strokeId, int[] packets, TabletPropertyDescriptionCollection tabletProperties)
{
this.FlushPackets(stylusId, strokeId);
Message message = new RealTimeInkSheetStylusDownMessage(this.m_Sheet, stylusId, strokeId, packets, tabletProperties);
message.Tags = new MessageTags();
message.Tags.SlideID = this.m_SlideID;
message.Tags.Priority = MessagePriority.RealTime;
message.Tags.BridgePriority = MessagePriority.RealTime;
this.Sender.Send(message, MessagePriority.RealTime);
}
private void HandleStylusDownHelper(object sender, int stylusId, int strokeId, int[] packets, TabletPropertyDescriptionCollection tabletProperties)
{
this.FlushPackets(stylusId, strokeId);
if (ViewerStateModel.NonStandardDpi)
{
RealTimeInkSheetModel.ScalePackets(packets, ViewerStateModel.DpiNormalizationSendMatrix);
}
Message message = new RealTimeInkSheetStylusDownMessage(this.m_Sheet, stylusId, strokeId, packets, tabletProperties);
message.Tags = new MessageTags();
message.Tags.SlideID = m_SlideID;
message.Tags.Priority = MessagePriority.RealTime;
message.Tags.BridgePriority = MessagePriority.RealTime;
this.Sender.Send(message, MessagePriority.RealTime);
}
private void HandleStylusDownHelper(object sender, int stylusId, int strokeId, int[] packets, TabletPropertyDescriptionCollection tabletProperties)
{
this.FlushPackets(stylusId, strokeId);
if (ViewerStateModel.NonStandardDpi) {
RealTimeInkSheetModel.ScalePackets(packets, ViewerStateModel.DpiNormalizationSendMatrix);
}
Message message = new RealTimeInkSheetStylusDownMessage(this.m_Sheet, stylusId, strokeId, packets, tabletProperties);
message.Tags = new MessageTags();
message.Tags.SlideID = m_SlideID;
message.Tags.Priority = MessagePriority.RealTime;
message.Tags.BridgePriority = MessagePriority.RealTime;
this.Sender.Send(message, MessagePriority.RealTime);
}
private void HandleStylusDownHelper(object sender, int stylusId, int strokeId, int[] packets, TabletPropertyDescriptionCollection tabletProperties)
{
this.FlushPackets(stylusId, strokeId);
Message message = new RealTimeInkSheetStylusDownMessage(this.m_Sheet, stylusId, strokeId, packets, tabletProperties);
message.Tags = new MessageTags();
message.Tags.SlideID = this.m_SlideID;
message.Tags.Priority = MessagePriority.RealTime;
message.Tags.BridgePriority = MessagePriority.RealTime;
this.Sender.Send(message, MessagePriority.RealTime);
}
