/// <summary>
/// Occurs when an input device begins a manipulation on the plot.
/// </summary>
/// <param name="e">The <see cref="OxyPlot.OxyMouseEventArgs" /> instance containing the event data.</param>
public override void Started(OxyMouseEventArgs e)
{
base.Started(e);
this.currentSeries = this.PlotView.ActualModel != null?this.PlotView.ActualModel.GetSeriesFromPoint(e.Position) : null;
this.Delta(e);
}
/// <summary>
/// Gets the nearest tracker hit.
/// </summary>
/// <param name="s">
/// The series.
/// </param>
/// <param name="point">
/// The point.
/// </param>
/// <param name="snap">
/// Snap to points.
/// </param>
/// <param name="pointsOnly">
/// Check points only (no interpolation).
/// </param>
/// <returns>
/// A tracker hit result.
/// </returns>
private static TrackerHitResult GetNearestHit(ITrackableSeries s, ScreenPoint point, bool snap, bool pointsOnly)
{
if (s == null)
{
return(null);
}
// Check data points only
if (snap || pointsOnly)
{
TrackerHitResult result = s.GetNearestPoint(point, false);
if (result != null)
{
if (result.Position.DistanceTo(point) < 20)
{
return(result);
}
}
}
// Check between data points (if possible)
if (!pointsOnly)
{
TrackerHitResult result = s.GetNearestPoint(point, true);
return(result);
}
return(null);
}
/// <summary>
/// Occurs when a manipulation is complete.
/// </summary>
/// <param name="e">The <see cref="OxyPlot.OxyMouseEventArgs" /> instance containing the event data.</param>
public override void Completed(OxyMouseEventArgs e)
{
base.Completed(e);
this.currentSeries = null;
this.PlotView.HideTracker();
if (this.PlotView.ActualModel != null)
{
this.PlotView.ActualModel.OnTrackerChanged(null);
}
}
/// <summary>
/// Occurs when a manipulation is complete.
/// </summary>
/// <param name="e">The <see cref="OxyPlot.OxyMouseEventArgs" /> instance containing the event data.</param>
public override void Completed(OxyMouseEventArgs e)
{
base.Completed(e);
this.currentSeries = null;
this.PlotView.HideTracker();
if (this.PlotView.ActualModel != null)
{
this.PlotView.ActualModel.OnTrackerChanged(null);
}
}
/// <summary>
/// Occurs when a manipulation is complete.
/// </summary>
/// <param name="e">
/// The <see cref="OxyPlot.ManipulationEventArgs"/> instance containing the event data.
/// </param>
public override void Completed(ManipulationEventArgs e)
{
base.Completed(e);
if (this.currentSeries == null)
{
return;
}
this.currentSeries = null;
this.PlotControl.HideTracker();
}
/// <summary>
/// Occurs when a manipulation is complete.
/// </summary>
/// <param name="e">
/// The <see cref="OxyPlot.ManipulationEventArgs"/> instance containing the event data.
/// </param>
public override void Completed(ManipulationEventArgs e)
{
base.Completed(e);
if (this.currentSeries == null)
{
return;
}
this.currentSeries = null;
this.PlotControl.HideTracker();
}
/// <summary>
/// Occurs when the input device changes position during a manipulation.
/// </summary>
/// <param name="e">The <see cref="OxyPlot.OxyMouseEventArgs" /> instance containing the event data.</param>
public override void Delta(OxyMouseEventArgs e)
{
base.Delta(e);
if (this.currentSeries == null || !this.LockToInitialSeries)
{
// get the nearest
this.currentSeries = this.PlotView.ActualModel != null?this.PlotView.ActualModel.GetSeriesFromPoint(e.Position, 20) : null;
}
if (this.currentSeries == null)
{
if (!this.LockToInitialSeries)
{
this.PlotView.HideTracker();
}
return;
}
var actualModel = this.PlotView.ActualModel;
if (actualModel == null)
{
return;
}
if (!actualModel.PlotArea.Contains(e.Position.X, e.Position.Y))
{
return;
}
var result = GetNearestHit(this.currentSeries, e.Position, this.Snap, this.PointsOnly);
if (result != null)
{
result.PlotModel = this.PlotView.ActualModel;
this.PlotView.ShowTracker(result);
this.PlotView.ActualModel.OnTrackerChanged(result);
}
}
/// <summary>
/// Occurs when the input device changes position during a manipulation.
/// </summary>
/// <param name="e">The <see cref="OxyPlot.OxyMouseEventArgs" /> instance containing the event data.</param>
public override void Delta(OxyMouseEventArgs e)
{
base.Delta(e);
if (this.currentSeries == null || !this.LockToInitialSeries)
{
// get the nearest
this.currentSeries = this.PlotView.ActualModel != null ? this.PlotView.ActualModel.GetSeriesFromPoint(e.Position, 20) : null;
}
if (this.currentSeries == null)
{
if (!this.LockToInitialSeries)
{
this.PlotView.HideTracker();
}
return;
}
var actualModel = this.PlotView.ActualModel;
if (actualModel == null)
{
return;
}
if (!actualModel.PlotArea.Contains(e.Position.X, e.Position.Y))
{
return;
}
var result = GetNearestHit(this.currentSeries, e.Position, this.Snap, this.PointsOnly);
if (result != null)
{
result.PlotModel = this.PlotView.ActualModel;
this.PlotView.ShowTracker(result);
this.PlotView.ActualModel.OnTrackerChanged(result);
}
}
/// <summary>
/// Gets the nearest tracker hit.
/// </summary>
/// <param name="s">The series.</param>
/// <param name="point">The point.</param>
/// <param name="snap">Snap to points.</param>
/// <param name="pointsOnly">Check points only (no interpolation).</param>
/// <returns>A tracker hit result.</returns>
private static TrackerHitResult GetNearestHit(ITrackableSeries s, ScreenPoint point, bool snap, bool pointsOnly)
{
if (s == null)
{
return null;
}
// Check data points only
if (snap || pointsOnly)
{
var result = s.GetNearestPoint(point, false);
if (result != null)
{
if (result.Position.DistanceTo(point) < 20)
{
return result;
}
}
}
// Check between data points (if possible)
if (!pointsOnly)
{
var result = s.GetNearestPoint(point, true);
return result;
}
return null;
}
/// <summary>
/// Occurs when an input device begins a manipulation on the plot.
/// </summary>
/// <param name="e">The <see cref="OxyPlot.OxyMouseEventArgs" /> instance containing the event data.</param>
public override void Started(OxyMouseEventArgs e)
{
base.Started(e);
this.currentSeries = this.PlotView.ActualModel != null ? this.PlotView.ActualModel.GetSeriesFromPoint(e.Position) : null;
this.Delta(e);
}
/// <summary>
/// Occurs when an input device begins a manipulation on the plot.
/// </summary>
/// <param name="e">
/// The <see cref="OxyPlot.ManipulationEventArgs"/> instance containing the event data.
/// </param>
public override void Started(ManipulationEventArgs e)
{
base.Started(e);
this.currentSeries = this.PlotControl.GetSeriesFromPoint(e.CurrentPosition);
this.Delta(e);
}
/// <summary>
/// Occurs when an input device begins a manipulation on the plot.
/// </summary>
/// <param name="e">
/// The <see cref="OxyPlot.ManipulationEventArgs"/> instance containing the event data.
/// </param>
public override void Started(ManipulationEventArgs e)
{
base.Started(e);
this.currentSeries = this.PlotControl.GetSeriesFromPoint(e.CurrentPosition);
this.Delta(e);
}
