private void PiePieceMouseUp(object sender, MouseButtonEventArgs e)
{
PiePiece piece = sender as PiePiece;
bool newValue = !piece.IsSelected;
foreach (PiePiece piePiece in _piePieceList)
{
piePiece.IsSelected = false;
}
piece.IsSelected = newValue;
}
private void ConstructPiePieces()
{
if (_piePiecePanel == null)
{
return;
}
double pieRadius = Radius;
if (pieRadius <= 0)
{
return;
}
double total = 0;
foreach (DataPoint dataPoint in DataPoints)
{
total += dataPoint.Value;
}
_piePiecePanel.Children.Clear();
_piePieceList.Clear();
double accumulativeAngle = 0;
for (int i = 0; i < DataPoints.Count; i++)
{
double percentage = DataPoints[i].Value / total;
double wedgeAngle = percentage * 360;
double radius = pieRadius;
if (IsStepwisePiePiece)
{
radius = (pieRadius - InnerRadius) / DataPoints.Count / 2 * (i + 1) + (InnerRadius + pieRadius) / 2;
}
if (DataPoints[i].DataPointForeground == null && BrushSet != null && BrushSet.Count > 0)
{
DataPoints[i].DataPointForeground = BrushSet[i % BrushSet.Count];
}
PiePiece piece = new PiePiece()
{
Radius = radius,
Percentage = percentage,
InnerRadius = InnerRadius,
CenterX = pieRadius + 10,
CenterY = pieRadius + 10,
ExtractLength = 0,
Value = DataPoints[i].Value,
RotateAngle = accumulativeAngle,
Fill = DataPoints[i].DataPointForeground,
Tag = DataPoints[i],
};
Binding valueBinding = new Binding()
{
Source = DataPoints[i],
Path = new PropertyPath("Value"),
Mode = BindingMode.TwoWay,
UpdateSourceTrigger = UpdateSourceTrigger.PropertyChanged
};
BindingOperations.SetBinding(piece, PiePiece.ValueProperty, valueBinding);
Binding binding = new Binding()
{
Source = DataPoints[i],
Path = new PropertyPath("IsSelected"),
Mode = BindingMode.TwoWay,
UpdateSourceTrigger = UpdateSourceTrigger.PropertyChanged
};
BindingOperations.SetBinding(piece, PiePiece.IsSelectedProperty, binding);
ToolTip toolTip = new ToolTip();
toolTip.Content = string.Format("{0} - {1} - {2}%", DataPoints[i].Label.ToString(), DataPoints[i].Value, Math.Round(percentage * 100, 2));
piece.ToolTip = toolTip;
piece.OnValueChangedAction = new Action(ConstructPiePieces);
piece.ToolTipOpening += new ToolTipEventHandler(PiePieceToolTipOpening);
piece.MouseUp += new MouseButtonEventHandler(PiePieceMouseUp);
_piePieceList.Add(piece);
_piePiecePanel.Children.Insert(0, piece);
accumulativeAngle += wedgeAngle;
}
}