private void AddIndicator(SerialGraph graph)
{
var indicator = new Indicator();
var fillBinding = new Binding("Brush") { Source = graph };
indicator.SetBinding(Indicator.FillProperty, fillBinding);
var strokeBinding = new Binding("PlotAreaBackground") { Source = this };
indicator.SetBinding(Indicator.StrokeProperty, strokeBinding);
indicator.MouseEnter += OnIndicatorMouseEnter;
indicator.MouseLeave += OnIndicatorMouseLeave;
_indicators.Add(graph, indicator);
AddIndicatorToCanvas(indicator);
}
private void DisplayBalloon(Indicator indicator)
{
_balloon.Text = indicator.Text;
_balloon.Visibility = Visibility.Visible;
_balloon.Measure(new Size(_graphCanvasDecorator.ActualWidth, _graphCanvasDecorator.ActualHeight));
var balloonLeft = (double)indicator.GetValue(Canvas.LeftProperty) - _balloon.DesiredSize.Width / 2 +
indicator.ActualWidth / 2;
if (balloonLeft < 0)
{
balloonLeft = (double)indicator.GetValue(Canvas.LeftProperty);
}
else if (balloonLeft + _balloon.DesiredSize.Width > _graphCanvasDecorator.ActualWidth)
{
balloonLeft = (double)indicator.GetValue(Canvas.LeftProperty) - _balloon.DesiredSize.Width;
}
var balloonTop = (double)indicator.GetValue(Canvas.TopProperty) - _balloon.DesiredSize.Height - 5;
if (balloonTop < 0)
{
balloonTop = (double)indicator.GetValue(Canvas.TopProperty) + 17;
}
_balloon.SetValue(Canvas.LeftProperty, balloonLeft);
_balloon.SetValue(Canvas.TopProperty, balloonTop);
}
private void AddIndicatorToCanvas(Indicator indicator)
{
_graphCanvas?.Children.Add(indicator);
}
private void AddIndicatorToCanvas(Indicator indicator)
{
_graphCanvas?.Children.Add(indicator);
}