Merge pull request #5 from dtatarnikov/lifecycle_events

Support start/finish rendering events
oxyplot · Nov 22, 2023 · 789276c · 789276c
2 parents 1709137 + 7d0c8d7
commit 789276c
Showing 1 changed file with 13 additions and 0 deletions.
diff --git a/Source/OxyPlot.Maui.Skia/PlotViewBase.cs b/Source/OxyPlot.Maui.Skia/PlotViewBase.cs
@@ -4,6 +4,11 @@ namespace OxyPlot.Maui.Skia;
 
 public abstract partial class PlotViewBase : BaseTemplatedView<Grid>, IPlotView
 {
+    public event Action UpdateStarted;
+    public event Action UpdateFinished;
+    public event Action RenderStarted;
+    public event Action RenderFinished;
+
     private int mainThreadId = 1;
 
     protected override void OnControlInitialized(Grid control)
@@ -142,11 +147,15 @@ public void InvalidatePlot(bool updateData = true)
         {
             return;
         }
+
+        UpdateStarted?.Invoke();
 
         lock (this.ActualModel.SyncRoot)
         {
             ((IPlotModel)this.ActualModel).Update(updateData);
         }
+
+        UpdateFinished?.Invoke();
 
         this.BeginInvoke(this.Render);
     }
@@ -355,6 +364,8 @@ protected void Render()
     /// </summary>
     protected virtual void RenderOverride()
     {
+        RenderStarted?.Invoke();
+
         var dpiScale = this.UpdateDpi();
         this.ClearBackground();
 
@@ -371,6 +382,8 @@ protected virtual void RenderOverride()
                 ((IPlotModel)this.ActualModel).Render(this.renderContext, new OxyRect(0, 0, width, height));
             }
         }
+
+        RenderFinished?.Invoke();
     }
 
     /// <summary>