internal override int GetDataPointIndex(Point point)
{
Canvas canvas = Area.GetAdorningCanvas();
double left = Area.ActualWidth - canvas.ActualWidth;
double top = Area.ActualHeight - canvas.ActualHeight;
point.X = point.X - left - Area.SeriesClipRect.Left + Area.Margin.Left;
point.Y = point.Y - top - Area.SeriesClipRect.Top + Area.Margin.Top;
double xVal = 0;
double xStart = ActualXAxis.VisibleRange.Start;
double xEnd = ActualXAxis.VisibleRange.End;
int index = -1;
double center = 0.5 * Math.Min(this.Area.SeriesClipRect.Width, this.Area.SeriesClipRect.Height);
double radian = ChartTransform.PointToPolarRadian(point, center);
double coeff = ChartTransform.RadianToPolarCoefficient(radian);
xVal = Math.Round(this.Area.InternalPrimaryAxis.PolarCoefficientToValue(coeff));
if (xVal <= xEnd && xVal >= xStart)
{
index = this.GetXValues().IndexOf((int)xVal);
}
return(index);
}
internal override void UpdateTooltip(object originalSource)
{
if (ShowTooltip)
{
var shape = (originalSource as Shape);
if (shape == null || (shape != null && shape.Tag == null))
{
return;
}
SetTooltipDuration();
var canvas = this.Area.GetAdorningCanvas();
double xVal = 0;
object data = null;
double xStart = ActualXAxis.VisibleRange.Start;
double xEnd = ActualXAxis.VisibleRange.End;
int index = 0;
if (this.Area.SeriesClipRect.Contains(mousePos))
{
var point = new Point(
mousePos.X - this.Area.SeriesClipRect.Left,
mousePos.Y - this.Area.SeriesClipRect.Top);
double center = 0.5 * Math.Min(this.Area.SeriesClipRect.Width, this.Area.SeriesClipRect.Height);
double radian = ChartTransform.PointToPolarRadian(point, center);
double coeff = ChartTransform.RadianToPolarCoefficient(radian);
xVal = Math.Round(this.Area.InternalPrimaryAxis.PolarCoefficientToValue(coeff));
if (xVal <= xEnd && xVal >= xStart)
{
index = this.GetXValues().IndexOf((int)xVal);
}
data = this.ActualData[index];
}
var chartTooltip = this.Area.Tooltip as ChartTooltip;
if (this.DrawType == ChartSeriesDrawType.Area)
{
var areaSegment = shape.Tag as AreaSegment;
areaSegment.Item = data;
areaSegment.XData = xVal;
areaSegment.YData = this.YValues[(int)index];
}
else
{
var lineSegment = shape.Tag as LineSegment;
lineSegment.Item = data;
lineSegment.YData = this.YValues[(int)index];
}
if (chartTooltip != null)
{
var tag = shape.Tag;
if (canvas.Children.Count == 0 || (canvas.Children.Count > 0 && !IsTooltipAvailable(canvas)))
{
chartTooltip.Content = tag;
if (chartTooltip.Content == null)
{
return;
}
if (ChartTooltip.GetInitialShowDelay(this) == 0)
{
canvas.Children.Add(chartTooltip);
}
chartTooltip.ContentTemplate = this.GetTooltipTemplate();
AddTooltip();
if (ChartTooltip.GetEnableAnimation(this))
{
SetDoubleAnimation(chartTooltip);
storyBoard.Children.Add(leftDoubleAnimation);
storyBoard.Children.Add(topDoubleAnimation);
Canvas.SetLeft(chartTooltip, chartTooltip.LeftOffset);
Canvas.SetTop(chartTooltip, chartTooltip.TopOffset);
_stopwatch.Start();
}
else
{
Canvas.SetLeft(chartTooltip, chartTooltip.LeftOffset);
Canvas.SetTop(chartTooltip, chartTooltip.TopOffset);
_stopwatch.Start();
}
}
else
{
foreach (var child in canvas.Children)
{
var tooltip = child as ChartTooltip;
if (tooltip != null)
{
chartTooltip = tooltip;
}
}
chartTooltip.Content = tag;
if (chartTooltip.Content == null)
{
RemoveTooltip();
return;
}
AddTooltip();
#if NETFX_CORE
if (_stopwatch.ElapsedMilliseconds > 100)
{
#endif
if (ChartTooltip.GetEnableAnimation(this))
{
_stopwatch.Restart();
if (leftDoubleAnimation == null || topDoubleAnimation == null || storyBoard == null)
{
SetDoubleAnimation(chartTooltip);
}
else
{
leftDoubleAnimation.To = chartTooltip.LeftOffset;
topDoubleAnimation.To = chartTooltip.TopOffset;
storyBoard.Begin();
}
}
else
{
_stopwatch.Restart();
Canvas.SetLeft(chartTooltip, chartTooltip.LeftOffset);
Canvas.SetTop(chartTooltip, chartTooltip.TopOffset);
}
#if NETFX_CORE
}
#endif
}
}
}
}