public override bool Merge(CommandItem newItem)
{
SelectionMovedOrResizedCommandItem newitemx = newItem as SelectionMovedOrResizedCommandItem;
if (newitemx == null ||
newitemx._editingOperationCount != _editingOperationCount ||
!StrokeCollectionsAreEqual(newitemx._selectedStrokeCollection, _selectedStrokeCollection))
{
return(false);
}
_newRect = newitemx._newRect;
return(true);
}
public void Redo()
{
if (!CanRedo)
{
throw new InvalidOperationException("No actions to redo");
}
CommandItem commandItem = _redoStack.Pop();
_disableChangeTracking = true;
try
{
commandItem.Redo();
}
finally
{
_disableChangeTracking = false;
}
_undoStack.Push(commandItem);
}
public override bool Merge(CommandItem newItem)
{
StrokesChangedCommandItem newStrokesChangedCommandItem = newItem as StrokesChangedCommandItem;
if (newStrokesChangedCommandItem == null ||
newStrokesChangedCommandItem._editingMode != _editingMode ||
newStrokesChangedCommandItem._editingOperationCount != _editingOperationCount)
{
return(false);
}
if (_editingMode != InkCanvasEditingMode.EraseByPoint)
{
return(false);
}
if (newStrokesChangedCommandItem._editingMode != InkCanvasEditingMode.EraseByPoint)
{
return(false);
}
foreach (Stroke doomed in newStrokesChangedCommandItem._removed)
{
if (_added.Contains(doomed))
{
_added.Remove(doomed);
}
else
{
_removed.Add(doomed);
}
}
_added.Add(newStrokesChangedCommandItem._added);
return(true);
}