From 73d256d69ed69aacf813876582b467ec6f9feda8 Mon Sep 17 00:00:00 2001
From: dtatarnikov <strong2much@gmail.com>
Date: Tue, 21 Nov 2023 16:03:36 +0700
Subject: [PATCH 1/2] Support start/finish rendering events

---
 Source/OxyPlot.Maui.Skia/PlotViewBase.cs | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/Source/OxyPlot.Maui.Skia/PlotViewBase.cs b/Source/OxyPlot.Maui.Skia/PlotViewBase.cs
index 61ceb02..05f7d21 100644
--- a/Source/OxyPlot.Maui.Skia/PlotViewBase.cs
+++ b/Source/OxyPlot.Maui.Skia/PlotViewBase.cs
@@ -4,6 +4,9 @@ namespace OxyPlot.Maui.Skia;
 
 public abstract partial class PlotViewBase : BaseTemplatedView<Grid>, IPlotView
 {
+    public event Action UpdateStarted;
+    public event Action UpdateFinished;
+    
     private int mainThreadId = 1;
 
     protected override void OnControlInitialized(Grid control)
@@ -138,6 +141,8 @@ public void HideZoomRectangle()
     /// <param name="updateData">The update Data.</param>
     public void InvalidatePlot(bool updateData = true)
     {
+        UpdateStarted?.Invoke();
+
         if (this.ActualModel == null)
         {
             return;
@@ -371,6 +376,8 @@ protected virtual void RenderOverride()
                 ((IPlotModel)this.ActualModel).Render(this.renderContext, new OxyRect(0, 0, width, height));
             }
         }
+
+        UpdateFinished?.Invoke();
     }
 
     /// <summary>

From 7d0c8d70cf35251582bb8b762a7a94ec4defbb78 Mon Sep 17 00:00:00 2001
From: dtatarnikov <strong2much@gmail.com>
Date: Wed, 22 Nov 2023 17:00:01 +0700
Subject: [PATCH 2/2] Add RenderStarted/RenderFinished events

---
 Source/OxyPlot.Maui.Skia/PlotViewBase.cs | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

diff --git a/Source/OxyPlot.Maui.Skia/PlotViewBase.cs b/Source/OxyPlot.Maui.Skia/PlotViewBase.cs
index 05f7d21..f105f6b 100644
--- a/Source/OxyPlot.Maui.Skia/PlotViewBase.cs
+++ b/Source/OxyPlot.Maui.Skia/PlotViewBase.cs
@@ -6,6 +6,8 @@ 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;
 
@@ -141,17 +143,19 @@ public void HideZoomRectangle()
     /// <param name="updateData">The update Data.</param>
     public void InvalidatePlot(bool updateData = true)
     {
-        UpdateStarted?.Invoke();
-
         if (this.ActualModel == null)
         {
             return;
         }
+        
+        UpdateStarted?.Invoke();
 
         lock (this.ActualModel.SyncRoot)
         {
             ((IPlotModel)this.ActualModel).Update(updateData);
         }
+        
+        UpdateFinished?.Invoke();
 
         this.BeginInvoke(this.Render);
     }
@@ -360,6 +364,8 @@ protected void Render()
     /// </summary>
     protected virtual void RenderOverride()
     {
+        RenderStarted?.Invoke();
+
         var dpiScale = this.UpdateDpi();
         this.ClearBackground();
 
@@ -377,7 +383,7 @@ protected virtual void RenderOverride()
             }
         }
 
-        UpdateFinished?.Invoke();
+        RenderFinished?.Invoke();
     }
 
     /// <summary>