private void ParseChronos(XmlReader r, PointF scale)
{
// TODO: catch empty tag <Chronos/>.
r.ReadStartElement();
while (r.NodeType == XmlNodeType.Element)
{
AbstractDrawing drawing = DrawingSerializer.Deserialize(r, scale, TimeHelper.IdentityTimestampMapper, metadata);
metadata.AddDrawing(metadata.ChronoManager.Id, drawing);
}
r.ReadEndElement();
}
public override HistoryMemento PerformUndo()
{
HistoryMemento redoMemento = new HistoryMementoAddDrawing(metadata, managerId, drawingId, drawingName);
redoMemento.CommandName = commandName;
AbstractDrawing drawing = DrawingSerializer.DeserializeMemento(data, metadata);
metadata.AddDrawing(managerId, drawing);
return(redoMemento);
}
private void AddDrawing(PointF imagePoint, int keyframeIndex, int timestampPerFrame, ImageToViewportTransformer transformer)
{
AbstractDrawing drawing = screenToolManager.ActiveTool.GetNewDrawing(imagePoint, keyframeIndex, timestampPerFrame, transformer);
Guid keyframeId = metadata.GetKeyframeId(keyframeIndex);
HistoryMementoAddDrawing memento = new HistoryMementoAddDrawing(metadata, keyframeId, drawing.Id, drawing.ToolDisplayName);
metadata.AddDrawing(keyframeId, drawing);
metadata.HistoryStack.PushNewCommand(memento);
// Special cases
// TODO: implement the event handler to metadata DrawingAdded and finish the label in the handler.
if (screenToolManager.ActiveTool == ToolManager.Tools["Label"])
{
if (LabelAdded != null)
{
LabelAdded(this, new DrawingEventArgs(drawing, keyframeId));
}
((DrawingText)drawing).SetEditMode(true, transformer);
}
}