fix some warnings

'Layout.LayoutChanged' is obsolete: 'Use SizeChanged.'

Author: janusw

Source/OxyPlot.Maui.Skia/PlotViewBase.cs

@@ -8,7 +8,7 @@ public abstract partial class PlotViewBase : BaseTemplatedView<Grid>, IPlotView
  public event Action UpdateFinished;
  public event Action RenderStarted;
  public event Action RenderFinished;
- 
+
  private int mainThreadId = 1;
 
  protected override void OnControlInitialized(Grid control)
@@ -74,7 +74,7 @@ protected override void OnControlInitialized(Grid control)
  /// </summary>
  protected PlotViewBase()
  {
- this.TrackerDefinitions = new ObservableCollection<TrackerDefinition>();
+ TrackerDefinitions = new ObservableCollection<TrackerDefinition>();
 
  DefaultTrackerTemplate = new ControlTemplate(() =>
  {
@@ -84,7 +84,7 @@ protected PlotViewBase()
  tc.Content = TrackerControl.DefaultTrackerTemplateContentProvider();
  return tc;
  });
- this.LayoutChanged += this.OnLayoutUpdated;
+ SizeChanged += OnSizeUpdated;
  }
 
  /// <summary>
@@ -147,14 +147,14 @@ public void InvalidatePlot(bool updateData = true)
  {
  return;
  }
- 
+
  UpdateStarted?.Invoke();
 
  lock (this.ActualModel.SyncRoot)
  {
  ((IPlotModel)this.ActualModel).Update(updateData);
  }
- 
+
  UpdateFinished?.Invoke();
 
  this.BeginInvoke(this.Render);
@@ -452,7 +452,7 @@ private bool IsInVisualTree()
  /// </summary>
  /// <param name="sender">The sender.</param>
  /// <param name="e">The event args.</param>
- private void OnLayoutUpdated(object sender, EventArgs e)
+ private void OnSizeUpdated(object sender, EventArgs e)
  {
  // if we were not in the visual tree the last time we tried to render but are now, we have to render
  if (!this.isInVisualTree && this.IsInVisualTree())