public override bool DoMouseMove(int X, int Y, Modifier keys, InteractivePlotSurface2D ps)
{
DateTime time = new DateTime((long)Chart.stockPricePlot.PhysicalXAxis1Cache.PhysicalToWorld(new System.Drawing.Point(X, Y), false));
int idx = Chart.GetTimeIndex(time);
if (idx >= 0)
{
float price = (float)Chart.Source.Rows[idx]["Price"];
Chart.priceText.Text = String.Format("{0:c}", price);
using (System.Drawing.Graphics g = System.Drawing.Graphics.FromImage(Lines.Canvas.Image))
{
PhysicalAxis xAxis = Chart.stockPricePlot.PhysicalXAxis1Cache;
PhysicalAxis yAxis = Chart.stockPricePlot.PhysicalYAxis1Cache;
g.Clear(System.Drawing.Color.Transparent);
// Draw the time line
System.Drawing.PointF timePoint = xAxis.WorldToPhysical(time.Ticks, true);
g.DrawLine(Lines.TimePen, timePoint.X, yAxis.PhysicalMin.Y, timePoint.X, yAxis.PhysicalMax.Y);
// Draw the guide lines
System.Drawing.PointF minPoint = yAxis.WorldToPhysical(price / GuideLinePercentage, true);
System.Drawing.PointF maxPoint = yAxis.WorldToPhysical(price * GuideLinePercentage, true);
g.DrawLine(Lines.PricePen, xAxis.PhysicalMin.X, minPoint.Y, xAxis.PhysicalMax.X, minPoint.Y);
g.DrawLine(Lines.PricePen, xAxis.PhysicalMin.X, maxPoint.Y, xAxis.PhysicalMax.X, maxPoint.Y);
}
// Use this as a hook to update the minimum and maximum displayed prices
Chart.UpdatePriceMinMax();
// Refresh the canvas to display the updated lines
Chart.stockPricePlot.Canvas.Refresh();
}
return(false);
}
/// <summary>
/// Adds lines to the chart
/// </summary>
/// <param name="pen">The pen to draw with</param>
/// <param name="lines">The lines to draw (start and end points)</param>
public void AddLine(System.Drawing.Pen pen, float startX, float startY, float endX, float endY)
{
// Draw the line on the chart
using (System.Drawing.Graphics g = System.Drawing.Graphics.FromImage(Canvas.Image))
{
PhysicalAxis xAxis = Chart.Plot.PhysicalXAxis1Cache;
PhysicalAxis yAxis = Chart.Plot.PhysicalYAxis1Cache;
// Draw the line
if (xAxis != null && yAxis != null)
{
g.DrawLine(pen, xAxis.WorldToPhysical(startX, true).X, yAxis.WorldToPhysical(startY, true).Y, xAxis.WorldToPhysical(endX, true).X, yAxis.WorldToPhysical(endY, true).Y);
}
}
}