private void OnHighlightIDChanged()
{
HighlightIDChanged?.Invoke(this, null);
CanvasPlot.Children.Clear();
if (Points == null ||
HighlightID < 0 ||
HighlightID >= Points.Count ||
double.IsNaN(Points[HighlightID].Value))
{
return;
}
Ellipse PointOutline = new Ellipse
{
Width = PointRadius * 2 + 4,
Height = PointRadius * 2 + 4,
Stroke = Brushes.Gray,
StrokeThickness = 3,
IsHitTestVisible = false
};
CanvasPlot.Children.Add(PointOutline);
Canvas.SetLeft(PointOutline, PointCenters[HighlightID].X - PointRadius - 2);
Canvas.SetTop(PointOutline, PointCenters[HighlightID].Y - PointRadius - 2);
if (Zoom > 1 && !IsMouseOver)
{
double ScrollFraction = PointCenters[HighlightID].X / ImagePlot.ActualWidth;
ScrollViewerPlot.ScrollToHorizontalOffset(ScrollFraction * ScrollViewerPlot.ScrollableWidth);
}
}
private void ImagePlot_OnMouseMove(object sender, MouseEventArgs e)
{
if (Zoom > 1)
{
System.Windows.Point ViewportPoint = e.GetPosition(ScrollViewerPlot);
double ScrollFraction = ViewportPoint.X / ScrollViewerPlot.ActualWidth;
ScrollViewerPlot.ScrollToHorizontalOffset(ScrollFraction * ScrollViewerPlot.ScrollableWidth);
}
if (Points == null || Points.Count == 0 || PointCenters == null || PointCenters.Length == 0)
{
HighlightID = -1;
return;
}
System.Windows.Point MousePoint = e.GetPosition(ImagePlot);
int ClosestID = GetClosestPoint(MousePoint);
List <int> Neighbors = Helper.ArrayOfSequence(Math.Max(0, ClosestID - 5), Math.Min(PointCenters.Length, ClosestID + 5), 1).ToList();
Neighbors.Sort((a, b) => (PointCenters[a] - MousePoint).Length.CompareTo((PointCenters[b] - MousePoint).Length));
ClosestID = Neighbors.First();
System.Windows.Point Closest = PointCenters[ClosestID];
double Dist = (Closest - MousePoint).Length;
if (Dist > PointRadius * Zoom * 2)
{
if (ImagePlot.ToolTip != null)
{
((ToolTip)ImagePlot.ToolTip).IsOpen = false;
}
//ImagePlot.ToolTip = null;
HighlightID = -1;
return;
}
HighlightID = ClosestID;
//if (ImagePlot.ToolTip == null || ImagePlot.ToolTip.GetType() != typeof(ToolTip))
// ImagePlot.ToolTip = new ToolTip();
((ToolTip)ImagePlot.ToolTip).Content = (ClosestID + 1) + ": " +
(Points[ClosestID].Context != null ? Points[ClosestID].Context.RootName + ", " : "") +
Points[ClosestID].Value.ToString("F3", CultureInfo.InvariantCulture);
((ToolTip)ImagePlot.ToolTip).IsOpen = false;
((ToolTip)ImagePlot.ToolTip).IsOpen = true;
}
