protected override void SetupChart()
{
this.flexChart1.Header.Content = "Relationship between Production and Cost";
this.flexChart1.Header.Style.Font = StyleInfo.ChartHeaderFont;
this.flexChart1.DataSource = DataService.GetUnitCostData();
this.flexChart1.ChartType = ChartType.LineSymbols;
this.flexChart1.BindingX = "Units";
var closePrice = new Series
{
Binding = "Cost",
Name = "Cost",
};
_trendLine = new C1.Win.Chart.TrendLine()
{
Name = "Trend Line",
Binding = "Cost",
Order = 4,
FitType = FitType.Linear,
};
this.flexChart1.Series.Add(closePrice);
this.flexChart1.Series.Add(_trendLine);
this.flexChart1.AxisX.Title = "Quantity";
this.flexChart1.AxisX.TitleStyle.Font = StyleInfo.AxisTitleFont;
this.flexChart1.AxisY.Title = "Per Unit Cost";
this.flexChart1.AxisY.TitleStyle.Font = StyleInfo.AxisTitleFont;
this.flexChart1.Rendered += FlexChart1_Rendered;
this.flexChart1.MouseUp += (s, e) => { _clickedItem = null; };
this.flexChart1.MouseLeave += (s, e) => { _clickedItem = null; };
this.flexChart1.MouseDown += FlexChart1_MouseDown;
this.flexChart1.MouseMove += FlexChart1_MouseMove;
}
private void FlexChart1_MouseDown(object sender, MouseEventArgs e)
{
var ht = flexChart1.HitTest(new Point(e.X, e.Y));
if (ht.Distance < 3 && ht.X != null && ht.Y != null)
{
_clickedItem = (UnitsCost)ht.Item;
}
}
private List <PointF> GetArrowCalloutPoints(Polygon callout, UnitsCost dataCord)
{
var textSize = _renderEngine.MeasureString(callout.Content);
var yMax = this.flexChart1.AxisY.ActualMax;
var xMax = this.flexChart1.AxisX.ActualMax;
var yMin = this.flexChart1.AxisY.ActualMin;
var xMin = this.flexChart1.AxisX.ActualMin;
var points = new List <PointF>();
var halfX = (float)textSize.Width / 2;
var halfY = (float)textSize.Height / 2;
if ((yMax - dataCord.Cost) > (dataCord.Cost - yMin))
{
//Above the point
if ((xMax - dataCord.Units) > (dataCord.Units - xMin))
{
//Above and Right to the Point
points.Add(new PointF(0, 0));
points.Add(new PointF(5, -5));
points.Add(new PointF(7, -5 + 2));
points.Add(new PointF(7 + halfX - 8, -7 - 10));
points.Add(new PointF(7, -7 - 10));
points.Add(new PointF(7, -7 - 10 - halfY * 2));
points.Add(new PointF(7 + halfX * 2, -7 - 10 - halfY * 2));
points.Add(new PointF(7 + halfX * 2, -7 - 10));
points.Add(new PointF(7 + halfX + 4, -7 - 10));
points.Add(new PointF(8, -5 + 3));
points.Add(new PointF(10, 0));
callout.ContentCenter = new PointF(7 + halfX, -17 - halfY);
}
else
{
//Above and Left to the point
points.Add(new PointF(0, 0));
points.Add(new PointF(-5, -5));
points.Add(new PointF(-7, -5 + 2));
points.Add(new PointF(-7 - halfX + 8, -7 - 10));
points.Add(new PointF(-7, -7 - 10));
points.Add(new PointF(-7, -7 - 10 - halfY * 2));
points.Add(new PointF(-7 - halfX * 2, -7 - 10 - halfY * 2));
points.Add(new PointF(-7 - halfX * 2, -7 - 10));
points.Add(new PointF(-7 - halfX - 4, -7 - 10));
points.Add(new PointF(-8, -5 + 3));
points.Add(new PointF(-10, 0));
callout.ContentCenter = new PointF(-7 - halfX, -17 - halfY);
}
}
else
{
//Below the point
if ((xMax - dataCord.Units) > (dataCord.Units - xMin))
{
//Below and Right to the Point
points.Add(new PointF(0, 0));
points.Add(new PointF(5, +5));
points.Add(new PointF(7, +5 - 2));
points.Add(new PointF(7 + halfX - 8, +7 + 10));
points.Add(new PointF(7, +7 + 10));
points.Add(new PointF(7, +7 + 10 + halfY * 2));
points.Add(new PointF(7 + halfX * 2, +7 + 10 + halfY * 2));
points.Add(new PointF(7 + halfX * 2, +7 + 10));
points.Add(new PointF(7 + halfX + 4, +7 + 10));
points.Add(new PointF(8, +5 - 3));
points.Add(new PointF(10, 0));
callout.ContentCenter = new PointF(7 + halfX, +17 + halfY);
}
else
{
//Below and Left to the point
points.Add(new PointF(0, 0));
points.Add(new PointF(-5, +5));
points.Add(new PointF(-7, +5 - 2));
points.Add(new PointF(-7 - halfX + 8, +7 + 10));
points.Add(new PointF(-7, +7 + 10));
points.Add(new PointF(-7, +7 + 10 + halfY * 2));
points.Add(new PointF(-7 - halfX * 2, +7 + 10 + halfY * 2));
points.Add(new PointF(-7 - halfX * 2, +7 + 10));
points.Add(new PointF(-7 - halfX - 4, +7 + 10));
points.Add(new PointF(-8, +5 - 3));
points.Add(new PointF(-10, 0));
callout.ContentCenter = new PointF(-7 - halfX, +17 + halfY);
}
}
return(points);
}
