/// <summary>
/// Creates PlotAreaMouseEventArgs
/// </summary>
/// <param name="e">MouseButtonEventArgs</param>
/// <returns>PlotAreaMouseButtonEventArgs</returns>
internal PlotAreaMouseEventArgs CreatePlotAreaMouseEventArgs(MouseEventArgs e)
{
Chart chart = Chart as Chart;
PlotAreaMouseEventArgs eventArgs = new PlotAreaMouseEventArgs(e);
if (chart.ChartArea.AxisX != null)
{
Double xValue;
Orientation axisOrientation = chart.ChartArea.AxisX.AxisOrientation;
Double pixelPosition = (axisOrientation == Orientation.Horizontal) ? e.GetPosition(chart.ChartArea.PlottingCanvas).X : e.GetPosition(chart.ChartArea.PlottingCanvas).Y;
Double lengthInPixel = ((axisOrientation == Orientation.Horizontal) ? chart.ChartArea.ChartVisualCanvas.Width : chart.ChartArea.ChartVisualCanvas.Height);
xValue = chart.ChartArea.AxisX.PixelPositionToXValue(lengthInPixel, (axisOrientation == Orientation.Horizontal) ? pixelPosition : lengthInPixel - pixelPosition);
if (chart.ChartArea.AxisX.IsDateTimeAxis)
eventArgs.XValue = DateTimeHelper.XValueToDateTime(chart.ChartArea.AxisX.MinDate, xValue, chart.ChartArea.AxisX.InternalIntervalType);
else
eventArgs.XValue = xValue;
}
if (chart.ChartArea.AxisY != null)
{
Double yValue;
Orientation axisOrientation = chart.ChartArea.AxisY.AxisOrientation;
Double pixelPosition = (axisOrientation == Orientation.Vertical) ? e.GetPosition(chart.ChartArea.PlottingCanvas).Y : e.GetPosition(chart.ChartArea.PlottingCanvas).X;
Double lengthInPixel = ((axisOrientation == Orientation.Vertical) ? chart.ChartArea.ChartVisualCanvas.Height : chart.ChartArea.ChartVisualCanvas.Width);
yValue = chart.ChartArea.AxisY.PixelPositionToYValue(lengthInPixel, (axisOrientation == Orientation.Vertical) ? pixelPosition : lengthInPixel - pixelPosition);
eventArgs.YValue = yValue;
}
if (chart.ChartArea.AxisY2 != null)
{
Double yValue;
Orientation axisOrientation = chart.ChartArea.AxisY2.AxisOrientation;
Double pixelPosition = (axisOrientation == Orientation.Vertical) ? e.GetPosition(chart.ChartArea.PlottingCanvas).Y : e.GetPosition(chart.ChartArea.PlottingCanvas).X;
Double lengthInPixel = ((axisOrientation == Orientation.Vertical) ? chart.ChartArea.ChartVisualCanvas.Height : chart.ChartArea.ChartVisualCanvas.Width);
yValue = chart.ChartArea.AxisY2.PixelPositionToYValue(lengthInPixel, (axisOrientation == Orientation.Vertical) ? pixelPosition : lengthInPixel - pixelPosition);
eventArgs.YValue = yValue;
}
return eventArgs;
}
private void SetPlotAreaMouseEventArgs4AxesX(Chart chart, Axis axis, MouseEventArgs e, PlotAreaMouseEventArgs eventArgs)
{
Double xValue;
AxisOrientation axisOrientation = chart.ChartArea.AxisX.AxisOrientation;
Double pixelPosition = (axisOrientation == AxisOrientation.Horizontal) ? e.GetPosition(chart.ChartArea.PlottingCanvas).X : e.GetPosition(chart.ChartArea.PlottingCanvas).Y;
Double lenthInPixel = ((axisOrientation == AxisOrientation.Horizontal) ? chart.ChartArea.ChartVisualCanvas.Width : chart.ChartArea.ChartVisualCanvas.Height);
xValue = chart.ChartArea.AxisX.PixelPositionToXValue(lenthInPixel, (axisOrientation == AxisOrientation.Horizontal) ? pixelPosition : lenthInPixel - pixelPosition);
if (chart.ChartArea.AxisX.IsDateTimeAxis)
{
/* The statement below can throw exception while calculating date corresponding XValue
* if there is not DataPoints MinDate will be 1/1/1 */
try
{
eventArgs.XValue = DateTimeHelper.XValueToDateTime(chart.ChartArea.AxisX.MinDate, xValue, chart.ChartArea.AxisX.InternalIntervalType);
}
catch
{
eventArgs.XValue = chart.ChartArea.AxisX.MinDate;
}
}
else
eventArgs.XValue = xValue;
}
/// <summary>
/// Creates PlotAreaMouseEventArgs
/// </summary>
/// <param name="e">MouseButtonEventArgs</param>
/// <returns>PlotAreaMouseButtonEventArgs</returns>
internal PlotAreaMouseEventArgs CreatePlotAreaMouseEventArgs(MouseEventArgs e)
{
Chart chart = Chart as Chart;
PlotAreaMouseEventArgs eventArgs = new PlotAreaMouseEventArgs(e);
if (chart.ChartArea.AxisX != null)
SetPlotAreaMouseEventArgs4AxesX(chart, chart.ChartArea.AxisX, e, eventArgs);
if (chart.ChartArea.AxisY != null)
SetPlotAreaMouseEventArgs4AxesY(chart, chart.ChartArea.AxisY, e, eventArgs);
else if (chart.ChartArea.AxisY2 != null)
SetPlotAreaMouseEventArgs4AxesY(chart, chart.ChartArea.AxisY2, e, eventArgs);
return eventArgs;
}
private void SetPlotAreaMouseEventArgs4AxesY(Chart chart, Axis axis, MouseEventArgs e, PlotAreaMouseEventArgs eventArgs)
{
Double yValue;
AxisOrientation axisOrientation = axis.AxisOrientation;
Double pixelPosition = (axisOrientation == AxisOrientation.Vertical) ? e.GetPosition(chart.ChartArea.PlottingCanvas).Y : e.GetPosition(chart.ChartArea.PlottingCanvas).X;
Double lenthInPixel = ((axisOrientation == AxisOrientation.Vertical) ? chart.ChartArea.ChartVisualCanvas.Height : chart.ChartArea.ChartVisualCanvas.Width);
yValue = axis.PixelPositionToYValue(lenthInPixel, (axisOrientation == AxisOrientation.Vertical) ? pixelPosition : lenthInPixel - pixelPosition);
if (axis.Logarithmic)
eventArgs.YValue = DataPoint.ConvertLogarithmicValue2ActualValue(chart, yValue, axis.AxisType);
else
eventArgs.YValue = yValue;
}