From 8e671348ae41d6527ec5f8f140ce55b1c47a0e02 Mon Sep 17 00:00:00 2001
From: Jaex <Jaex@users.noreply.github.com>
Date: Fri, 17 Nov 2017 18:50:14 +0300
Subject: [PATCH] Queue processing if it is requested while already processing

---
 .../Shapes/Effect/BaseEffectShape.cs          | 24 +++++++++++++++----
 1 file changed, 20 insertions(+), 4 deletions(-)

diff --git a/ShareX.ScreenCaptureLib/Shapes/Effect/BaseEffectShape.cs b/ShareX.ScreenCaptureLib/Shapes/Effect/BaseEffectShape.cs
index f997ec1ae..4e566a2c8 100644
--- a/ShareX.ScreenCaptureLib/Shapes/Effect/BaseEffectShape.cs
+++ b/ShareX.ScreenCaptureLib/Shapes/Effect/BaseEffectShape.cs
@@ -35,11 +35,21 @@ public abstract class BaseEffectShape : BaseShape
 
         public abstract string OverlayText { get; }
 
-        private bool isEffectCaching;
+        private bool isEffectCaching, cachePending;
         private Image cachedEffect;
 
         public abstract void ApplyEffect(Bitmap bmp);
 
+        public override void OnUpdate()
+        {
+            base.OnUpdate();
+
+            if (cachePending)
+            {
+                CacheEffect();
+            }
+        }
+
         public virtual void OnDraw(Graphics g)
         {
             if (isEffectCaching)
@@ -130,7 +140,9 @@ private void CacheEffect()
         {
             if (!isEffectCaching)
             {
-                ClearCache(true);
+                cachePending = false;
+
+                ClearCache();
 
                 if (IsInsideCanvas)
                 {
@@ -146,11 +158,15 @@ private void CacheEffect()
                     });
                 }
             }
+            else
+            {
+                cachePending = true;
+            }
         }
 
-        private void ClearCache(bool forceClear = false)
+        private void ClearCache()
         {
-            if ((forceClear || !isEffectCaching) && cachedEffect != null)
+            if (!isEffectCaching && cachedEffect != null)
             {
                 cachedEffect.Dispose();
                 cachedEffect = null;