protected override void ShowToolTip(object sender, MouseEventArgs e)
{
// Hide any existing tooltips
HideToolTip(sender, e);
ChartEventArgs chartEvent = this.GetChartEvent(sender, e);
if (chartEvent == null || chartEvent.YValues.Length == 0)
{
return;
}
this._displayToolTips(sender, e, chartEvent.YValues, chartEvent.SeriesIndices);
}
protected override Size FillToolTipData(
object sender,
MouseEventArgs e,
Path boundingRectElem,
Path circleElem)
{
ChartEventArgs chartEvent = GetChartEvent(sender, e);
int i = chartEvent.SeriesIndices[0];
double yValue = chartEvent.YValues[0],
xValue = chartEvent.XValues[0];
ChartModel model = Model;
string[] seriesLabels = model.SeriesLabels;
TextBlock textElem = ToolTip.Children[2] as TextBlock;
textElem.Text = seriesLabels[i] + ": (" + xValue.ToString(Format) + ") (" + yValue.ToString() + ")";
double labelWidth = textElem.ActualWidth;
double labelHeight = textElem.ActualHeight;
//We do not need the next label
textElem = ToolTip.Children[3] as TextBlock;
textElem.Text = "";
double rectWidth = labelWidth + 2 * _TEXT_MARGIN;
RectangleGeometry rg = boundingRectElem.Data as RectangleGeometry;
Rect rect = rg.Rect;
double rectHeight = rect.Height;
if (rectHeight > 2 * labelHeight)
{
rectHeight -= labelHeight;
}
rg.Rect = new Rect(rect.X, rect.Y, rectWidth, rectHeight);
boundingRectElem.SetValue(Path.StrokeProperty, new SolidColorBrush(Model.SeriesColors[i]));
EllipseGeometry eg = circleElem.Data as EllipseGeometry;
eg.RadiusX = eg.RadiusY = 0;
return(new Size(rectWidth, 2 * (labelHeight + _TEXT_MARGIN)));
}
protected override Size FillToolTipData(
object sender,
MouseEventArgs e,
Path boundingRectElem,
Path circleElem)
{
ChartEventArgs chartEvent = GetChartEvent(sender, e);
CandleStickChartModel model = Model as CandleStickChartModel;
var j = chartEvent.SeriesIndices[0];
var i = chartEvent.YValueIndices[0];
string[] groupLabels = model.GroupLabels,
seriesLabels = model.SeriesLabels;
double[][][] candleStickYValues = model.CandleStickYValues;
Color[] seriesColors = model.SeriesColors;
//top label
TextBlock textElem = ToolTip.Children[2] as TextBlock;
textElem.Text = seriesLabels[j];
var labelWidth = textElem.ActualWidth;
//Show the open-high-low-close values as comma separated
StringBuilder sb = new StringBuilder();
textElem = ToolTip.Children[3] as TextBlock;
sb.Append(candleStickYValues[i][j][0].ToString(Format));
sb.Append(", ");
sb.Append(candleStickYValues[i][j][1].ToString(Format));
sb.Append(", ");
sb.Append(candleStickYValues[i][j][2].ToString(Format));
sb.Append(", ");
sb.Append(candleStickYValues[i][j][3].ToString(Format));
textElem.Text = sb.ToString();
var dataWidth = textElem.ActualWidth;
// leave a clearance on either end of the text
double xMargin = _TEXT_MARGIN, dx = xMargin;
if (labelWidth > dataWidth)
{
dx = (labelWidth - dataWidth) / 2 + xMargin;
}
textElem.SetValue(Canvas.LeftProperty, dx);
var rectWidth = Math.Max(labelWidth, dataWidth) + 2 * xMargin;
RectangleGeometry rg = boundingRectElem.Data as RectangleGeometry;
Rect rect = rg.Rect;
rg.Rect = new Rect(0, 0, rectWidth, rect.Height);
SolidColorBrush scb = new SolidColorBrush(seriesColors[j]);
boundingRectElem.SetValue(Path.StrokeProperty, scb);
circleElem.SetValue(Path.StrokeProperty, scb);
return(new Size(rectWidth, 2 * (textElem.ActualHeight + _TEXT_MARGIN)));
}
