private void OnAnimatePromotionMoveTask(GenericMessage <PromotionMoveTask> message)
{
promotionTask = message.Content;
Move promotionMove = promotionTask.Move;
if (promotionTask.InstantMove)
{
ChangePieceLocation(promotionMove.GetFrom(), promotionMove.GetTo());
ShowPromotionPopup();
}
else
{
Point animationStartPoint = GetCoordinatePositionOnBoard(promotionMove.GetFrom());
Point animationEndPoint = GetCoordinatePositionOnBoard(promotionMove.GetTo());
ContentPresenter pieceItemView = (ContentPresenter)piecesItemsControl.ContainerFromItem(ViewModel.GetPiece(promotionMove.GetFrom()));
MoveAnimationsFactory moveAnimationsFactory = new MoveAnimationsFactory();
moveAnimationsFactory.AddMoveAnimation(pieceItemView, animationStartPoint, animationEndPoint);
// dont allow user interactions with the board for the duration of the animation
IsHitTestVisible = false;
moveAnimationsFactory.StoryBoard.Completed += (o, e) =>
{
IsHitTestVisible = true;
ShowPromotionPopup();
};
moveAnimationsFactory.StoryBoard.Begin();
}
}
private void CancelPromotionMove()
{
if (promotionTask == null)
{
throw new NotSupportedException("No promotion task pending");
}
Move promotionMove = promotionTask.Move;
//move the pawn back to original position
ChangePieceLocation(promotionMove.GetFrom(), promotionMove.GetFrom());
promotionTask = null;
}
private void ShowPromotionPopup()
{
if (promotionTask == null)
{
return;
}
Move promotionMove = promotionTask.Move;
PromotionView promotionView = new PromotionView();
Point toSquarePoint = GetCoordinatePositionOnBoard(promotionMove.GetTo());
bool isBlackPromotion = promotionMove.GetTo().Y == 0;
// if the popup apears on bottom, display the queen on the bottom
bool displayedOnBottom = toSquarePoint.Y != 0;
PromotionViewModel promotionVM = new PromotionViewModel(isBlackPromotion ? PieceColor.Black : PieceColor.White, displayedOnBottom)
{
PieceSelectedCommand = new RelayCommand((p) => {
promotionTask.OnPieceSelected((PieceType)p);
if ((PieceType)p == PieceType.None)
{
CancelPromotionMove();
}
promotionTask = null;
promotionSelectionPopup.IsOpen = false;
})
};
promotionView.DataContext = promotionVM;
double squareWidth = board.ActualWidth / 8;
promotionView.PieceSize = squareWidth;
promotionSelectionPopup.Child = promotionView;
promotionSelectionPopup.IsOpen = true;
promotionSelectionPopup.HorizontalOffset = toSquarePoint.X;
promotionSelectionPopup.VerticalOffset = 0;
if (displayedOnBottom)
{
promotionSelectionPopup.VerticalOffset = (8 - promotionVM.Pieces.Count) * squareWidth;
}
}