alpha+showcont

Source/Editor/Modules/SourceCodeEditing/CodeEditingModule.cs

@@ -178,7 +178,7 @@ namespace FlaxEditor.Modules.SourceCodeEditing
         /// <summary>
         /// The control types collection (for game UI).
         /// </summary>
-        public readonly CachedTypesCollection Controls = new CachedTypesCollection(64, new ScriptType(typeof(Control)), IsTypeValidScriptingTypeControls, HasAssemblyValidScriptingTypes);
+        public readonly CachedTypesCollection Controls = new CachedTypesCollection(64, new ScriptType(typeof(ContainerControl)), IsTypeValidScriptingTypeControls, HasAssemblyValidScriptingTypes);
 
         /// <summary>
         /// The Animation Graph custom nodes collection.

Source/Engine/UI/GUI/Common/Panels/AlphaPanel.cs

@@ -0,0 +1,40 @@
+using System;
+using System.Collections.Generic;
+using FlaxEngine;
+
+namespace FlaxEngine.GUI
+{
+    /// <summary>
+    /// Changes alpha of all its children
+    /// </summary>
+    public class AlphaPanel : ContainerControl
+    {
+        /// <summary>
+        /// The target alpha value
+        /// </summary>
+        public float Alpha;
+        /// <summary>
+        /// Whether or not we should ignore previous alphas
+        /// </summary>
+        public bool IgnoreStack;
+
+        /// <inheritdoc/>
+        public override void Draw()
+        {
+            Render2D.PeekTint(out Color oldColor);
+            if (IgnoreStack)
+            {
+                Color newColor = new Color(oldColor.R, oldColor.G, oldColor.B, Alpha);
+                Render2D.PushTint(ref newColor, false);
+            }
+            else
+            {
+                Color newColor = new Color(oldColor.R, oldColor.G, oldColor.B, oldColor.A * Alpha);
+                Render2D.PushTint(ref newColor, false);
+            }
+            base.Draw();
+            
+            Render2D.PopTint();
+        }
+    }
+}