naming more like wpf

samples/ControlCatalog/Pages/ScreenPage.cs

@@ -13,6 +13,8 @@ namespace ControlCatalog.Pages
     {
         private double _leftMost;
 
+        protected override bool BypassFlowDirectionPolicies => true;
+
         protected override void OnAttachedToVisualTree(VisualTreeAttachmentEventArgs e)
         {
             base.OnAttachedToVisualTree(e);
@@ -78,7 +80,5 @@ namespace ControlCatalog.Pages
             return new FormattedText(textToFormat, CultureInfo.CurrentCulture, FlowDirection.LeftToRight,
                 Typeface.Default, 12, Brushes.Green);
         }
-
-        protected override bool ShouldPresentMirrored() => false;
     }
 }

src/Avalonia.Controls/ComboBox.cs

@@ -183,12 +183,24 @@ namespace Avalonia.Controls
             this.UpdateSelectionBoxItem(SelectedItem);
         }
 
-        // Because the SelectedItem isn't connected to the visual tree
+        // Because the SelectedItem and his children sometimes isn't connected 
+        // to the visual tree and sometimes not to logical tree
         public override void InvalidateFlowDirection()
         {
+            base.InvalidateFlowDirection();
+
             if (SelectedItem is Control selectedControl)
             {
                 selectedControl.InvalidateFlowDirection();
+
+                foreach (var visual in selectedControl.GetVisualDescendants())
+                {
+                    if (visual is Control childControl)
+                    {
+                        childControl.InvalidateFlowDirection();
+                    }
+                }
+
                 foreach (var logical in selectedControl.GetLogicalDescendants())
                 {
                     if (logical is Control childControl)
@@ -197,8 +209,6 @@ namespace Avalonia.Controls
                     }
                 }
             }
-
-            base.InvalidateFlowDirection();
         }
 
         /// <inheritdoc/>

src/Avalonia.Controls/Control.cs

@@ -140,6 +140,17 @@ namespace Avalonia.Controls
         /// <inheritdoc/>
         bool IDataTemplateHost.IsDataTemplatesInitialized => _dataTemplates != null;
 
+        /// <summary>
+        /// Gets a value indicating whether control bypass FlowDirecton policies.
+        /// </summary>
+        /// <remarks>
+        /// Related to FlowDirection system and returns false as default, so if 
+        /// <see cref="FlowDirection"/> is RTL then control will get a mirror presentation. 
+        /// For controls that want to avoid mirror presentation, it is possible to override 
+        /// this property and return true.
+        /// </remarks>
+        protected virtual bool BypassFlowDirectionPolicies => false;
+
         /// <inheritdoc/>
         void ISetterValue.Initialize(ISetter setter)
         {
@@ -338,37 +349,34 @@ namespace Avalonia.Controls
 
         /// <summary>
         /// Computes the <see cref="IVisual.IsMirrorTransform"/> value according to the 
-        /// <see cref="FlowDirection"/>
+        /// <see cref="FlowDirection"/> and <see cref="BypassFlowDirectionPolicies"/>
         /// </summary>
         public virtual void InvalidateFlowDirection()
         {
-            bool parentShouldPresentMirrored = false;
-            bool thisShouldPresentMirrored = ShouldPresentMirrored();
+            FlowDirection thisFD = this.FlowDirection;
+            FlowDirection parentFD = FlowDirection.LeftToRight;
+
+            bool thisBypassFlowDirectionPolicies = BypassFlowDirectionPolicies;
+            bool parentBypassFlowDirectionPolicies = false;
 
             var parent = this.FindAncestorOfType<Control>();
             if (parent != null)
             {
-                parentShouldPresentMirrored = parent.ShouldPresentMirrored();
+                parentFD = parent.FlowDirection;
+                parentBypassFlowDirectionPolicies = parent.BypassFlowDirectionPolicies;
             }
             else if (this.Parent is Control logicalParent)
             {
-                parentShouldPresentMirrored = logicalParent.ShouldPresentMirrored();
+                parentFD = logicalParent.FlowDirection;
+                parentBypassFlowDirectionPolicies = logicalParent.BypassFlowDirectionPolicies;
             }
 
-            bool shouldApplyMirrorTransform = thisShouldPresentMirrored != parentShouldPresentMirrored;
+            bool thisShouldBeMirrored = thisFD == FlowDirection.RightToLeft && !BypassFlowDirectionPolicies;
+            bool parentShouldBeMirrored = parentFD == FlowDirection.RightToLeft && !parentBypassFlowDirectionPolicies;
 
-            IsMirrorTransform = shouldApplyMirrorTransform;
-        }
+            bool shouldApplyMirrorTransform = thisShouldBeMirrored != parentShouldBeMirrored;
 
-        /// <summary>
-        /// Determines whether the element should be present mirrored, this
-        /// method related to FlowDirection system and returns true if FlowDirection
-        /// is RightToLeft. For controls that want to avoid this behavior, it is 
-        /// possible to override this method and return false. 
-        /// </summary>
-        protected virtual bool ShouldPresentMirrored()
-        {
-            return FlowDirection == FlowDirection.RightToLeft;
+            IsMirrorTransform = shouldApplyMirrorTransform;
         }
     }
 }

src/Avalonia.Controls/Image.cs

@@ -66,6 +66,8 @@ namespace Avalonia.Controls
             set { SetValue(StretchDirectionProperty, value); }
         }
 
+        protected override bool BypassFlowDirectionPolicies => true;
+        
         /// <summary>
         /// Renders the control.
         /// </summary>
@@ -127,7 +129,5 @@ namespace Avalonia.Controls
                 return new Size();
             }
         }
-
-        protected override bool ShouldPresentMirrored() => false;
     }
 }

src/Avalonia.Controls/Presenters/TextPresenter.cs

@@ -281,6 +281,8 @@ namespace Avalonia.Controls.Presenters
             }
         }
 
+        protected override bool BypassFlowDirectionPolicies => true;
+
         /// <summary>
         /// Creates the <see cref="TextLayout"/> used to render the text.
         /// </summary>
@@ -798,7 +800,5 @@ namespace Avalonia.Controls.Presenters
                 }
             }
         }
-
-        protected override bool ShouldPresentMirrored() => false;
     }
 }

src/Avalonia.Controls/TextBlock.cs

@@ -329,6 +329,8 @@ namespace Avalonia.Controls
             set => SetValue(TextDecorationsProperty, value);
         }
 
+        protected override bool BypassFlowDirectionPolicies => true;
+
         /// <summary>
         /// Gets the value of the attached <see cref="FontFamilyProperty"/> on a control.
         /// </summary>
@@ -612,7 +614,5 @@ namespace Avalonia.Controls
         {
             InvalidateTextLayout();
         }
-
-        protected override bool ShouldPresentMirrored() => false;
     }
 }

src/Avalonia.Controls/TopLevel.cs

@@ -348,6 +348,12 @@ namespace Avalonia.Controls
         /// </summary>
         protected virtual ILayoutManager CreateLayoutManager() => new LayoutManager(this);
 
+        public override void InvalidateFlowDirection()
+        {
+        }
+        
+        protected override bool BypassFlowDirectionPolicies => true;
+        
         /// <summary>
         /// Handles a paint notification from <see cref="ITopLevelImpl.Resized"/>.
         /// </summary>
@@ -529,11 +535,5 @@ namespace Avalonia.Controls
 
         ITextInputMethodImpl? ITextInputMethodRoot.InputMethod =>
             (PlatformImpl as ITopLevelImplWithTextInputMethod)?.TextInputMethod;
-
-        public override void InvalidateFlowDirection()
-        {
-        }
-        
-        protected override bool ShouldPresentMirrored() => false;
     }
 }