protected override ChartEventArgs GetChartEvent(object sender, MouseEventArgs e)
{
ElementExpandos ee = Expandos[sender];
int i = ee.YValueIndex;
int[] yValueIndices = { i };
double[] values = { Model.YValues[i, 0] };
return(new ChartEventArgs(null, yValueIndices, values, null));
}
protected override ChartEventArgs GetChartEvent(object sender, MouseEventArgs e)
{
ElementExpandos ee = Expandos[sender];
int i = ee.YValueIndex;
int j = ee.SeriesIndex;
int[] seriesIndices = { j };
int[] yValueIndices = { i };
// For now use null for the yValue since there are open-high-low-close values at that location
return(new ChartEventArgs(seriesIndices, yValueIndices, null, null));
}
protected override ChartEventArgs GetChartEvent(object sender, MouseEventArgs e)
{
ElementExpandos ee = Expandos[sender];
int i = ee.YValueIndex;
int j = ee.SeriesIndex;
int[] seriesIndices = { j };
int[] yValueIndices = { i };
double[] yValues = { Model.YValues[i, j] };
double[] xValues = { Model.XValues[i, j] };
return(new ChartEventArgs(seriesIndices, yValueIndices, yValues, xValues));
}
protected override ChartEventArgs GetChartEvent(object sender, MouseEventArgs e)
{
Point pt = e.GetPosition(ChartCanvas);
ElementExpandos ee = Expandos[sender];
int i = ee.SeriesIndex;
bool isPerspective = IsPerspective;
double yOffset = YOffsetPerspective;
ChartModel model = Model;
double[,] xValues = model.XValues;
double[,] yValues = model.YValues;
int nValues = yValues.GetUpperBound(0) + 1;
double minYValue = model.MinYValue, maxYValue = model.MaxYValue;
double minXValue = model.MinXValue, maxXValue = model.MaxXValue;
double marginLeft = MarginLeft, marginTop = MarginTop;
double gridWidth = (ChartCanvas.Width - marginLeft - MarginRight);
double gridHeight = (ChartCanvas.Height - marginTop - MarginBottom);
double gridBottom = gridHeight + marginTop + (isPerspective?yOffset:0);
double dx, dy, xValue = 0.0, yValue = 0.0;
double nextdy, nextdx;
for (int j = 0; j < nValues; ++j)
{
if (j != nValues - 1)
{
dx = marginLeft + gridWidth * (xValues[j, i] - minXValue) / (maxXValue - minXValue);
nextdx = marginLeft + gridWidth * (xValues[j + 1, i] - minXValue) / (maxXValue - minXValue);
if (pt.X > dx && pt.X < (dx + nextdx))
{
dy = gridBottom - gridHeight * (yValues[j, i] - minYValue) / (maxYValue - minYValue);
nextdy = gridBottom -
gridHeight * (yValues[j + 1, i] - minYValue) / (maxYValue - minYValue);
yValue = yValues[j, i] + (yValues[j + 1, i] - yValues[j, i]) * (pt.Y - dy) / (nextdy - dy);
xValue = xValues[j, i] + (xValues[j + 1, i] - xValues[j, i]) * (pt.X - dx) / (nextdx - dx);
break;
}
}
}
int[] seriesIndices = { i };
//double[] yEventValues = {yValue};
//double[] xEventValues = {xValue};
return(new ChartEventArgs(seriesIndices, null, new double[] { yValue }, new double[] { xValue }));
}
protected override ChartEventArgs GetChartEvent(object sender, MouseEventArgs e)
{
Point pt = e.GetPosition(ChartCanvas);
ElementExpandos ee = Expandos[sender];
int i = ee.SeriesIndex;
bool isPerspective = IsPerspective;
double yOffset = YOffsetPerspective;
ChartModel model = Model;
double [,] yValues = model.YValues;
string [] groupLabels = model.GroupLabels;
int groupCount = groupLabels.Length;
double marginLeft = MarginLeft, marginTop = MarginTop;
double gridWidth = (ChartCanvas.Width - marginLeft - MarginRight);
double gridHeight = (ChartCanvas.Height - marginTop - MarginBottom);
int yValueCount = yValues.GetUpperBound(0) + 1;
double barWidth = (gridWidth / Math.Max(yValueCount, groupCount));
double gridBottom = gridHeight + marginTop + (isPerspective?yOffset:0);
double dx = marginLeft + barWidth / 2, value = 0.0;
for (int j = 0; j < yValueCount; ++j)
{
if (j == yValueCount - 1)
{
continue;
}
if (pt.X > dx && pt.X < (dx + barWidth))
{
value = yValues[j, i] + (yValues[j + 1, i] - yValues[j, i]) * (pt.X - dx) / barWidth;
break;
}
dx += barWidth;
}
int[] seriesIndices = { i };
double[] values = { value };
return(new ChartEventArgs(seriesIndices, null, values, null));
}
protected override ChartEventArgs GetChartEvent(object sender, MouseEventArgs e)
{
Point pt = e.GetPosition(ChartCanvas);
bool isRadarArea = (Type == ChartType.RADAR_AREA);
ChartModel model = Model;
bool isPerspective = IsPerspective;
double xOffset = XOffsetPerspective, yOffset = YOffsetPerspective;
string [] groupLabels = model.GroupLabels;
int groupCount = groupLabels.Length;
double[,] yValues = model.YValues;
double minValue = model.MinYValue, maxValue = model.MaxYValue;
int yValueCount = yValues.GetUpperBound(0) + 1;
double marginLeft = MarginLeft, marginTop = MarginTop;
double gridWidth = (ChartCanvas.Width - marginLeft - MarginRight);
double gridHeight = (ChartCanvas.Height - marginTop - MarginBottom);
double cx = marginLeft + gridWidth / 2, cy = marginTop + gridHeight / 2;
double radius = Math.Min(gridWidth, gridHeight) / 2;
int seriesCount = model.SeriesLabels.Length;
int seriesIndex = -1;
ElementExpandos ee = Expandos[sender];
if (pt.X < marginLeft ||
pt.X > (marginLeft + gridWidth) ||
pt.Y < marginTop ||
pt.Y > (marginTop + gridHeight))
{
return(null);
}
if (!isRadarArea)
{
seriesIndex = ee.SeriesIndex;
}
_seriesXs = new List <double>(seriesCount);
_seriesYs = new List <double>(seriesCount);
double dx1, dy1, dx2, dy2, value;
List <int> seriesIndices = new List <int>(seriesCount);
List <double> seriesValues = new List <double>(seriesCount);
for (int i = 0; i < seriesCount; ++i)
{
if (!isRadarArea && (seriesIndex != i))
{
continue;
}
for (int j = 0; j < yValueCount; ++j)
{
double nextYVal = (j != yValueCount - 1)? yValues[j + 1, i]: yValues[0, i];
double yPoint = radius * (yValues[j, i] - minValue) / (maxValue - minValue);
double yPoint2 = radius * (nextYVal - minValue) / (maxValue - minValue);
double angle = j * 2.0 * Math.PI / yValueCount,
nextAngle = (j + 1) * 2.0 * Math.PI / yValueCount;
dx1 = cx + yPoint * Math.Sin(angle);
dy1 = cy - yPoint * Math.Cos(angle);
dx2 = cx + yPoint2 * Math.Sin(nextAngle);
dy2 = cy - yPoint2 * Math.Cos(nextAngle);
if (_isPointInPolygon(new double [] { cx, dx1, dx2 }, new double [] { cy, dy1, dy2 }, pt.X, pt.Y))
{
// find the point on the radar that matches the current mouse
// using the angle of the current mouse point
double mousePtAngle = Math.Atan2(cy - pt.Y, pt.X - cx);
if (mousePtAngle <= Math.PI / 2)
{
mousePtAngle = Math.PI / 2 - mousePtAngle;
}
else
{
mousePtAngle = 3 * Math.PI / 2 + (Math.PI - mousePtAngle);
}
double ratio = (mousePtAngle - angle) / (nextAngle - angle);
value = yValues[j, i] + (nextYVal - yValues[j, i]) * ratio;
seriesValues.Add(value);
seriesIndices.Add(i);
_seriesYs.Add(dy1 + (dy2 - dy1) * ratio);
_seriesXs.Add(dx1 + (dx2 - dx1) * ratio);
break;
}
}
}
return(new ChartEventArgs(seriesIndices.ToArray(), null, seriesValues.ToArray(), null));
}