From 8f833dbb2fba5d9a4df0946eef1122bc4f097d87 Mon Sep 17 00:00:00 2001
From: Takoooooo <dan.pan2012@yandex.ru>
Date: Thu, 9 Sep 2021 19:16:32 +0300
Subject: [PATCH 01/12] it works

---
 packages/Avalonia/AvaloniaBuildTasks.targets | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/packages/Avalonia/AvaloniaBuildTasks.targets b/packages/Avalonia/AvaloniaBuildTasks.targets
index 45a7f1aa44..a18930527f 100644
--- a/packages/Avalonia/AvaloniaBuildTasks.targets
+++ b/packages/Avalonia/AvaloniaBuildTasks.targets
@@ -42,12 +42,20 @@
   </Target>
   
   <PropertyGroup>
-    <BuildAvaloniaResourcesDependsOn>$(BuildAvaloniaResourcesDependsOn);AddAvaloniaResources;ResolveReferences</BuildAvaloniaResourcesDependsOn>
+    <BuildAvaloniaResourcesDependsOn>$(BuildAvaloniaResourcesDependsOn);AddAvaloniaResources;ResolveReferences;ReGenerateAvaloniaResourcesOnResourceDeletion</BuildAvaloniaResourcesDependsOn>
   </PropertyGroup>
   
+  <Target Name="ReGenerateAvaloniaResourcesOnResourceDeletion" BeforeTargets="GenerateAvaloniaResources">
+    <Hash ItemsToHash="@(AvaloniaResource);@(AvaloniaXaml);$(MSBuildAllProjects)">
+      <Output TaskParameter="HashResult" PropertyName="UpdatedInputCacheContents" />
+    </Hash>
+
+    <WriteLinesToFile Overwrite="true" File="$(MSBuildProjectFile).Inputs.cache" Lines="$(UpdatedInputCacheContents)" WriteOnlyWhenDifferent="True" />
+  </Target>
+  
   <Target Name="GenerateAvaloniaResources" 
           BeforeTargets="CoreCompile;CoreResGen"
-          Inputs="@(AvaloniaResource);@(AvaloniaXaml);$(MSBuildAllProjects)"
+          Inputs="@(AvaloniaResource);@(AvaloniaXaml);$(MSBuildProjectFile).Inputs.cache;$(MSBuildAllProjects)"
           Outputs="$(AvaloniaResourcesTemporaryFilePath)"
 	  DependsOnTargets="$(BuildAvaloniaResourcesDependsOn)">
     <ItemGroup>

From 890eabbd1fb2e211aaadb3a8bb8b3cb1cf6b4e68 Mon Sep 17 00:00:00 2001
From: Takoooooo <dan.pan2012@yandex.ru>
Date: Fri, 10 Sep 2021 11:27:17 +0300
Subject: [PATCH 02/12] upd

---
 packages/Avalonia/AvaloniaBuildTasks.targets | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/packages/Avalonia/AvaloniaBuildTasks.targets b/packages/Avalonia/AvaloniaBuildTasks.targets
index a18930527f..7fbe939390 100644
--- a/packages/Avalonia/AvaloniaBuildTasks.targets
+++ b/packages/Avalonia/AvaloniaBuildTasks.targets
@@ -50,12 +50,12 @@
       <Output TaskParameter="HashResult" PropertyName="UpdatedInputCacheContents" />
     </Hash>
 
-    <WriteLinesToFile Overwrite="true" File="$(MSBuildProjectFile).Inputs.cache" Lines="$(UpdatedInputCacheContents)" WriteOnlyWhenDifferent="True" />
+    <WriteLinesToFile Overwrite="true" File="$(IntermediateOutputPath)/Avalonia/Inputs.cache" Lines="$(UpdatedInputCacheContents)" WriteOnlyWhenDifferent="True" />
   </Target>
   
   <Target Name="GenerateAvaloniaResources" 
           BeforeTargets="CoreCompile;CoreResGen"
-          Inputs="@(AvaloniaResource);@(AvaloniaXaml);$(MSBuildProjectFile).Inputs.cache;$(MSBuildAllProjects)"
+          Inputs="@(AvaloniaResource);@(AvaloniaXaml);$(IntermediateOutputPath)/Avalonia/Inputs.cache;$(MSBuildAllProjects)"
           Outputs="$(AvaloniaResourcesTemporaryFilePath)"
 	  DependsOnTargets="$(BuildAvaloniaResourcesDependsOn)">
     <ItemGroup>

From 9d54cd3b889687d3143081e00754265eb8c04697 Mon Sep 17 00:00:00 2001
From: Steven Kirk <grokys@gmail.com>
Date: Wed, 15 Sep 2021 09:41:34 +0200
Subject: [PATCH 03/12] Disable win32 handling of Alt/F10 keys.

https://stackoverflow.com/questions/9627379/how-to-disable-normal-behaviour-of-alt-key/9627980#9627980

Fixes #6592.
---
 .../Interop/UnmanagedMethods.cs               | 25 +++++++++++++++++++
 .../Avalonia.Win32/WindowImpl.AppWndProc.cs   |  6 +++++
 2 files changed, 31 insertions(+)

diff --git a/src/Windows/Avalonia.Win32/Interop/UnmanagedMethods.cs b/src/Windows/Avalonia.Win32/Interop/UnmanagedMethods.cs
index ad409810b8..6a6bcc5715 100644
--- a/src/Windows/Avalonia.Win32/Interop/UnmanagedMethods.cs
+++ b/src/Windows/Avalonia.Win32/Interop/UnmanagedMethods.cs
@@ -808,6 +808,31 @@ namespace Avalonia.Win32.Interop
             MNC_SELECT = 3
         }
 
+        public enum SysCommands
+        {
+            SC_SIZE = 0xF000,
+            SC_MOVE = 0xF010,
+            SC_MINIMIZE = 0xF020,
+            SC_MAXIMIZE = 0xF030,
+            SC_NEXTWINDOW = 0xF040,
+            SC_PREVWINDOW = 0xF050,
+            SC_CLOSE = 0xF060,
+            SC_VSCROLL = 0xF070,
+            SC_HSCROLL = 0xF080,
+            SC_MOUSEMENU = 0xF090,
+            SC_KEYMENU = 0xF100,
+            SC_ARRANGE = 0xF110,
+            SC_RESTORE = 0xF120,
+            SC_TASKLIST = 0xF130,
+            SC_SCREENSAVE = 0xF140,
+            SC_HOTKEY = 0xF150,
+            SC_DEFAULT = 0xF160,
+            SC_MONITORPOWER = 0xF170,
+            SC_CONTEXTHELP = 0xF180,
+            SC_SEPARATOR = 0xF00F,
+            SCF_ISSECURE = 0x00000001,
+        }
+
         [StructLayout(LayoutKind.Sequential)]
         public struct RGBQUAD
         {
diff --git a/src/Windows/Avalonia.Win32/WindowImpl.AppWndProc.cs b/src/Windows/Avalonia.Win32/WindowImpl.AppWndProc.cs
index d163b3d068..f7ed2f215f 100644
--- a/src/Windows/Avalonia.Win32/WindowImpl.AppWndProc.cs
+++ b/src/Windows/Avalonia.Win32/WindowImpl.AppWndProc.cs
@@ -123,6 +123,12 @@ namespace Avalonia.Win32
                         break;
                     }
 
+                case WindowsMessage.WM_SYSCOMMAND:
+                    // Disable system handling of Alt/F10 menu keys.
+                    if ((SysCommands)wParam == SysCommands.SC_KEYMENU && HighWord(ToInt32(lParam)) <= 0)
+                        return IntPtr.Zero;
+                    break;
+
                 case WindowsMessage.WM_MENUCHAR:
                     {
                         // mute the system beep

From acc6f6d3198189068295684af0026b7dd1f2808a Mon Sep 17 00:00:00 2001
From: Nikita Tsukanov <keks9n@gmail.com>
Date: Thu, 16 Sep 2021 12:31:02 +0300
Subject: [PATCH 04/12] [X11/RNDR] Wait for any in-progress rendering before
 destroying the window

---
 .../Rendering/DeferredRenderer.cs             | 33 +++++++++++++++----
 src/Avalonia.X11/X11Window.cs                 |  3 +-
 2 files changed, 28 insertions(+), 8 deletions(-)

diff --git a/src/Avalonia.Visuals/Rendering/DeferredRenderer.cs b/src/Avalonia.Visuals/Rendering/DeferredRenderer.cs
index 3bd8e05ee2..6c84cfd55c 100644
--- a/src/Avalonia.Visuals/Rendering/DeferredRenderer.cs
+++ b/src/Avalonia.Visuals/Rendering/DeferredRenderer.cs
@@ -35,6 +35,8 @@ namespace Avalonia.Rendering
         private IRef<IDrawOperation> _currentDraw;
         private readonly IDeferredRendererLock _lock;
         private readonly object _sceneLock = new object();
+        private readonly object _startStopLock = new object();
+        private readonly object _renderLoopIsRenderingLock = new object();
         private readonly Action _updateSceneIfNeededDelegate;
 
         /// <summary>
@@ -139,6 +141,8 @@ namespace Avalonia.Rendering
             }
 
             Stop();
+            // Wait for any in-progress rendering to complete
+            lock(_renderLoopIsRenderingLock){}
             DisposeRenderTarget();
         }
 
@@ -233,20 +237,26 @@ namespace Avalonia.Rendering
         /// <inheritdoc/>
         public void Start()
         {
-            if (!_running && _renderLoop != null)
+            lock (_startStopLock)
             {
-                _renderLoop.Add(this);
-                _running = true;
+                if (!_running && _renderLoop != null)
+                {
+                    _renderLoop.Add(this);
+                    _running = true;
+                }
             }
         }
 
         /// <inheritdoc/>
         public void Stop()
         {
-            if (_running && _renderLoop != null)
+            lock (_startStopLock)
             {
-                _renderLoop.Remove(this);
-                _running = false;
+                if (_running && _renderLoop != null)
+                {
+                    _renderLoop.Remove(this);
+                    _running = false;
+                }
             }
         }
 
@@ -255,7 +265,16 @@ namespace Avalonia.Rendering
 
         void IRenderLoopTask.Update(TimeSpan time) => UpdateScene();
 
-        void IRenderLoopTask.Render() => Render(false);
+        void IRenderLoopTask.Render()
+        {
+            lock (_renderLoopIsRenderingLock)
+            {
+                lock(_startStopLock)
+                    if(!_running)
+                        return;
+                Render(false);
+            }
+        }
 
         /// <inheritdoc/>
         Size IVisualBrushRenderer.GetRenderTargetSize(IVisualBrush brush)
diff --git a/src/Avalonia.X11/X11Window.cs b/src/Avalonia.X11/X11Window.cs
index 149d7fb9b2..f0d2d5ca8a 100644
--- a/src/Avalonia.X11/X11Window.cs
+++ b/src/Avalonia.X11/X11Window.cs
@@ -805,13 +805,14 @@ namespace Avalonia.X11
             
             if (_handle != IntPtr.Zero)
             {
-                XDestroyWindow(_x11.Display, _handle);
                 _platform.Windows.Remove(_handle);
                 _platform.XI2?.OnWindowDestroyed(_handle);
+                var handle = _handle;
                 _handle = IntPtr.Zero;
                 Closed?.Invoke();
                 _mouse.Dispose();
                 _touch.Dispose();
+                XDestroyWindow(_x11.Display, handle);
             }
             
             if (_useRenderWindow && _renderHandle != IntPtr.Zero)

From 20e970f3359160a67644d382f54305730f52da82 Mon Sep 17 00:00:00 2001
From: 0x90d <46010672+0x90d@users.noreply.github.com>
Date: Mon, 20 Sep 2021 09:48:15 +0200
Subject: [PATCH 05/12] Update DefaultMenuInteractionHandler.cs

---
 .../Platform/DefaultMenuInteractionHandler.cs                  | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/Avalonia.Controls/Platform/DefaultMenuInteractionHandler.cs b/src/Avalonia.Controls/Platform/DefaultMenuInteractionHandler.cs
index 209feb351c..726d2c596c 100644
--- a/src/Avalonia.Controls/Platform/DefaultMenuInteractionHandler.cs
+++ b/src/Avalonia.Controls/Platform/DefaultMenuInteractionHandler.cs
@@ -303,7 +303,8 @@ namespace Avalonia.Controls.Platform
                 {
                     item.Parent.SelectedItem.Close();
                     SelectItemAndAncestors(item);
-                    Open(item, false);
+                    if (item.HasSubMenu)
+                        Open(item, false);
                 }
                 else
                 {

From 1e918b1ed4dccf08e3504f4f515c3095b0bde9d6 Mon Sep 17 00:00:00 2001
From: Takoooooo <dan.pan2012@yandex.ru>
Date: Mon, 20 Sep 2021 12:30:14 +0300
Subject: [PATCH 06/12] upd

---
 packages/Avalonia/AvaloniaBuildTasks.targets | 14 +++++++++-----
 1 file changed, 9 insertions(+), 5 deletions(-)

diff --git a/packages/Avalonia/AvaloniaBuildTasks.targets b/packages/Avalonia/AvaloniaBuildTasks.targets
index 7fbe939390..f32ffffa12 100644
--- a/packages/Avalonia/AvaloniaBuildTasks.targets
+++ b/packages/Avalonia/AvaloniaBuildTasks.targets
@@ -42,20 +42,24 @@
   </Target>
   
   <PropertyGroup>
-    <BuildAvaloniaResourcesDependsOn>$(BuildAvaloniaResourcesDependsOn);AddAvaloniaResources;ResolveReferences;ReGenerateAvaloniaResourcesOnResourceDeletion</BuildAvaloniaResourcesDependsOn>
+    <BuildAvaloniaResourcesDependsOn>$(BuildAvaloniaResourcesDependsOn);AddAvaloniaResources;ResolveReferences;_GenerateAvaloniaResourcesDependencyCache</BuildAvaloniaResourcesDependsOn>
   </PropertyGroup>
   
-  <Target Name="ReGenerateAvaloniaResourcesOnResourceDeletion" BeforeTargets="GenerateAvaloniaResources">
+  <Target Name="_GenerateAvaloniaResourcesDependencyCache" BeforeTargets="GenerateAvaloniaResources">
+    <ItemGroup>
+      <CustomAdditionalGenerateAvaloniaResourcesInputs Include="$(IntermediateOutputPath)/Avalonia/Inputs.cache" />
+    </ItemGroup>
+    
     <Hash ItemsToHash="@(AvaloniaResource);@(AvaloniaXaml);$(MSBuildAllProjects)">
-      <Output TaskParameter="HashResult" PropertyName="UpdatedInputCacheContents" />
+      <Output TaskParameter="HashResult" PropertyName="AvaloniaResourcesDependencyHash" />
     </Hash>
 
-    <WriteLinesToFile Overwrite="true" File="$(IntermediateOutputPath)/Avalonia/Inputs.cache" Lines="$(UpdatedInputCacheContents)" WriteOnlyWhenDifferent="True" />
+    <WriteLinesToFile Overwrite="true" File="@(CustomAdditionalGenerateAvaloniaResourcesInputs)" Lines="$(AvaloniaResourcesDependencyHash)" WriteOnlyWhenDifferent="True" />
   </Target>
   
   <Target Name="GenerateAvaloniaResources" 
           BeforeTargets="CoreCompile;CoreResGen"
-          Inputs="@(AvaloniaResource);@(AvaloniaXaml);$(IntermediateOutputPath)/Avalonia/Inputs.cache;$(MSBuildAllProjects)"
+          Inputs="@(AvaloniaResource);@(AvaloniaXaml);@(CustomAdditionalGenerateAvaloniaResourcesInputs);$(MSBuildAllProjects)"
           Outputs="$(AvaloniaResourcesTemporaryFilePath)"
 	  DependsOnTargets="$(BuildAvaloniaResourcesDependsOn)">
     <ItemGroup>

From 55de8084a14d0f6e9886ab0d90580fcb1e930ff3 Mon Sep 17 00:00:00 2001
From: Takoooooo <dan.pan2012@yandex.ru>
Date: Mon, 20 Sep 2021 12:41:38 +0300
Subject: [PATCH 07/12] upd

---
 packages/Avalonia/AvaloniaBuildTasks.targets | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/packages/Avalonia/AvaloniaBuildTasks.targets b/packages/Avalonia/AvaloniaBuildTasks.targets
index f32ffffa12..de3830ffea 100644
--- a/packages/Avalonia/AvaloniaBuildTasks.targets
+++ b/packages/Avalonia/AvaloniaBuildTasks.targets
@@ -47,14 +47,14 @@
   
   <Target Name="_GenerateAvaloniaResourcesDependencyCache" BeforeTargets="GenerateAvaloniaResources">
     <ItemGroup>
-      <CustomAdditionalGenerateAvaloniaResourcesInputs Include="$(IntermediateOutputPath)/Avalonia/Inputs.cache" />
+      <CustomAdditionalGenerateAvaloniaResourcesInputs Include="$(IntermediateOutputPath)/Avalonia/Resources.Inputs.cache" />
     </ItemGroup>
     
     <Hash ItemsToHash="@(AvaloniaResource);@(AvaloniaXaml);$(MSBuildAllProjects)">
       <Output TaskParameter="HashResult" PropertyName="AvaloniaResourcesDependencyHash" />
     </Hash>
 
-    <WriteLinesToFile Overwrite="true" File="@(CustomAdditionalGenerateAvaloniaResourcesInputs)" Lines="$(AvaloniaResourcesDependencyHash)" WriteOnlyWhenDifferent="True" />
+    <WriteLinesToFile Overwrite="true" File="$(IntermediateOutputPath)/Avalonia/Resources.Inputs.cache" Lines="$(AvaloniaResourcesDependencyHash)" WriteOnlyWhenDifferent="True" />
   </Target>
   
   <Target Name="GenerateAvaloniaResources" 

From 3984acb69ffdca770145ee2e6e95079bb73c3ebe Mon Sep 17 00:00:00 2001
From: Greig Lambourne <greig.lambourne@adbro.co.uk>
Date: Mon, 20 Sep 2021 13:45:17 +0100
Subject: [PATCH 08/12] Add DesignStyle property which allows style to be
 assigned only at design time, similar to WPF.

---
 src/Avalonia.Controls/Design.cs | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/src/Avalonia.Controls/Design.cs b/src/Avalonia.Controls/Design.cs
index 0d05e19e53..36435a46cc 100644
--- a/src/Avalonia.Controls/Design.cs
+++ b/src/Avalonia.Controls/Design.cs
@@ -60,6 +60,19 @@ namespace Avalonia.Controls
             return target.GetValue(PreviewWithProperty);
         }
 
+        public static readonly AttachedProperty<Style> DesignStyleProperty = AvaloniaProperty
+            .RegisterAttached<Control, Style>("DesignStyle", typeof(Design));
+
+        public static void SetDesignStyle(Control control, Style value)
+        {
+            control.SetValue(DesignStyleProperty, value);
+        }
+
+        public static Style GetDesignStyle(Control control)
+        {
+            return control.GetValue(DesignStyleProperty);
+        }
+
         public static void ApplyDesignModeProperties(Control target, Control source)
         {
             if (source.IsSet(WidthProperty))
@@ -68,6 +81,8 @@ namespace Avalonia.Controls
                 target.Height = source.GetValue(HeightProperty);
             if (source.IsSet(DataContextProperty))
                 target.DataContext = source.GetValue(DataContextProperty);
+            if (source.IsSet(DesignStyleProperty))
+                target.Styles.Add(source.GetValue(DesignStyleProperty));
         }
     }
 }

From 5c31f919141f215d7cc72fcbaa5f3e45917e9873 Mon Sep 17 00:00:00 2001
From: Greig Lambourne <greig.lambourne@adbro.co.uk>
Date: Mon, 20 Sep 2021 14:07:25 +0100
Subject: [PATCH 09/12] Changed to use IStyle instead of style.

---
 src/Avalonia.Controls/Design.cs | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/src/Avalonia.Controls/Design.cs b/src/Avalonia.Controls/Design.cs
index 36435a46cc..07d2918a88 100644
--- a/src/Avalonia.Controls/Design.cs
+++ b/src/Avalonia.Controls/Design.cs
@@ -60,15 +60,15 @@ namespace Avalonia.Controls
             return target.GetValue(PreviewWithProperty);
         }
 
-        public static readonly AttachedProperty<Style> DesignStyleProperty = AvaloniaProperty
-            .RegisterAttached<Control, Style>("DesignStyle", typeof(Design));
+        public static readonly AttachedProperty<IStyle> DesignStyleProperty = AvaloniaProperty
+            .RegisterAttached<Control, IStyle>("DesignStyle", typeof(Design));
 
-        public static void SetDesignStyle(Control control, Style value)
+        public static void SetDesignStyle(Control control, IStyle value)
         {
             control.SetValue(DesignStyleProperty, value);
         }
 
-        public static Style GetDesignStyle(Control control)
+        public static IStyle GetDesignStyle(Control control)
         {
             return control.GetValue(DesignStyleProperty);
         }

From 3a66523fee23afcef574d53b792e8f7167ed2018 Mon Sep 17 00:00:00 2001
From: Max Katz <maxkatz6@outlook.com>
Date: Mon, 20 Sep 2021 17:12:36 -0400
Subject: [PATCH 10/12] ProgressBar missed TemplateBinding.CornerRadius

---
 src/Avalonia.Themes.Fluent/Controls/ProgressBar.xaml | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/src/Avalonia.Themes.Fluent/Controls/ProgressBar.xaml b/src/Avalonia.Themes.Fluent/Controls/ProgressBar.xaml
index bd5c4d4691..7ad75588e1 100644
--- a/src/Avalonia.Themes.Fluent/Controls/ProgressBar.xaml
+++ b/src/Avalonia.Themes.Fluent/Controls/ProgressBar.xaml
@@ -23,11 +23,11 @@
         <Border x:Name="ProgressBarRoot" ClipToBounds="True" Background="{TemplateBinding Background}" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" CornerRadius="{TemplateBinding CornerRadius}">          
             <Panel>
               <Panel x:Name="DeterminateRoot">
-                <Border CornerRadius="{DynamicResource ControlCornerRadius}" x:Name="PART_Indicator" Margin="{TemplateBinding Padding}" Background="{TemplateBinding Foreground}" />
+                <Border CornerRadius="{TemplateBinding CornerRadius}" x:Name="PART_Indicator" Margin="{TemplateBinding Padding}" Background="{TemplateBinding Foreground}" />
               </Panel>
               <Panel x:Name="IndeterminateRoot">
-                <Border x:Name="IndeterminateProgressBarIndicator" CornerRadius="{DynamicResource ControlCornerRadius}" Margin="{TemplateBinding Padding}" Background="{TemplateBinding Foreground}" />
-                <Border x:Name="IndeterminateProgressBarIndicator2" CornerRadius="{DynamicResource ControlCornerRadius}" Margin="{TemplateBinding Padding}" Background="{TemplateBinding Foreground}" />
+                <Border x:Name="IndeterminateProgressBarIndicator" CornerRadius="{TemplateBinding CornerRadius}" Margin="{TemplateBinding Padding}" Background="{TemplateBinding Foreground}" />
+                <Border x:Name="IndeterminateProgressBarIndicator2" CornerRadius="{TemplateBinding CornerRadius}" Margin="{TemplateBinding Padding}" Background="{TemplateBinding Foreground}" />
               </Panel>
             </Panel>          
         </Border>

From 0310cc7c2fc7ca0f531069774cc975774c39eff9 Mon Sep 17 00:00:00 2001
From: Max Katz <maxkatz6@outlook.com>
Date: Mon, 20 Sep 2021 17:14:44 -0400
Subject: [PATCH 11/12] NotificationCard missed TemplateBinding.CornerRadius

---
 src/Avalonia.Themes.Fluent/Controls/NotificationCard.xaml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/Avalonia.Themes.Fluent/Controls/NotificationCard.xaml b/src/Avalonia.Themes.Fluent/Controls/NotificationCard.xaml
index c06b501f82..924d977eb5 100644
--- a/src/Avalonia.Themes.Fluent/Controls/NotificationCard.xaml
+++ b/src/Avalonia.Themes.Fluent/Controls/NotificationCard.xaml
@@ -17,7 +17,7 @@
     <Setter Property="Template">
       <ControlTemplate>
         <LayoutTransformControl Name="PART_LayoutTransformControl" UseRenderTransform="True">
-          <Border CornerRadius="{DynamicResource ControlCornerRadius}" BoxShadow="0 6 8 0 #4F000000" Margin="5 5 5 10">
+          <Border CornerRadius="{TemplateBinding CornerRadius}" BoxShadow="0 6 8 0 #4F000000" Margin="5 5 5 10">
             <Border Background="{TemplateBinding Background}"
                     BorderBrush="{TemplateBinding BorderBrush}"
                     BorderThickness="{TemplateBinding BorderThickness}"

From 4d9b0c09dbc846fb620329ad2449c13e348ef535 Mon Sep 17 00:00:00 2001
From: Nikita Tsukanov <keks9n@gmail.com>
Date: Tue, 21 Sep 2021 15:55:39 +0300
Subject: [PATCH 12/12] [FBDEV] Reuse the same memory region for the back
 buffer

---
 .../LockedFramebuffer.cs                      | 46 ------------
 .../Output/FbDevBackBuffer.cs                 | 70 +++++++++++++++++++
 .../Output/FbdevOutput.cs                     |  7 +-
 3 files changed, 76 insertions(+), 47 deletions(-)
 delete mode 100644 src/Linux/Avalonia.LinuxFramebuffer/LockedFramebuffer.cs
 create mode 100644 src/Linux/Avalonia.LinuxFramebuffer/Output/FbDevBackBuffer.cs

diff --git a/src/Linux/Avalonia.LinuxFramebuffer/LockedFramebuffer.cs b/src/Linux/Avalonia.LinuxFramebuffer/LockedFramebuffer.cs
deleted file mode 100644
index 87c7b64c26..0000000000
--- a/src/Linux/Avalonia.LinuxFramebuffer/LockedFramebuffer.cs
+++ /dev/null
@@ -1,46 +0,0 @@
-using System;
-using System.Runtime.InteropServices;
-using Avalonia.Platform;
-
-namespace Avalonia.LinuxFramebuffer
-{
-    unsafe class LockedFramebuffer : ILockedFramebuffer
-    {
-        private readonly int _fb;
-        private readonly fb_fix_screeninfo _fixedInfo;
-        private fb_var_screeninfo _varInfo;
-        private readonly IntPtr _address;
-
-        public LockedFramebuffer(int fb, fb_fix_screeninfo fixedInfo, fb_var_screeninfo varInfo, IntPtr address, Vector dpi)
-        {
-            _fb = fb;
-            _fixedInfo = fixedInfo;
-            _varInfo = varInfo;
-            _address = address;
-            Dpi = dpi;
-            //Use double buffering to avoid flicker
-            Address = Marshal.AllocHGlobal(RowBytes * Size.Height);
-        }
-
-
-        void VSync()
-        {
-            NativeUnsafeMethods.ioctl(_fb, FbIoCtl.FBIO_WAITFORVSYNC, null);
-        }
-
-        public void Dispose()
-        {
-            VSync();
-            NativeUnsafeMethods.memcpy(_address, Address, new IntPtr(RowBytes * Size.Height));
-
-            Marshal.FreeHGlobal(Address);
-            Address = IntPtr.Zero;
-        }
-
-        public IntPtr Address { get; private set; }
-        public PixelSize Size => new PixelSize((int)_varInfo.xres, (int) _varInfo.yres);
-        public int RowBytes => (int) _fixedInfo.line_length;
-        public Vector Dpi { get; }
-        public PixelFormat Format => _varInfo.bits_per_pixel == 16 ? PixelFormat.Rgb565 : _varInfo.blue.offset == 16 ? PixelFormat.Rgba8888 : PixelFormat.Bgra8888;
-    }
-}
diff --git a/src/Linux/Avalonia.LinuxFramebuffer/Output/FbDevBackBuffer.cs b/src/Linux/Avalonia.LinuxFramebuffer/Output/FbDevBackBuffer.cs
new file mode 100644
index 0000000000..7afad13bb6
--- /dev/null
+++ b/src/Linux/Avalonia.LinuxFramebuffer/Output/FbDevBackBuffer.cs
@@ -0,0 +1,70 @@
+using System;
+using System.Runtime.InteropServices;
+using System.Threading;
+using Avalonia.Platform;
+
+namespace Avalonia.LinuxFramebuffer.Output
+{
+    internal unsafe class FbDevBackBuffer : IDisposable
+    {
+        private readonly int _fb;
+        private readonly fb_fix_screeninfo _fixedInfo;
+        private readonly fb_var_screeninfo _varInfo;
+        private readonly IntPtr _targetAddress;
+        private readonly object _lock = new object();
+
+        public FbDevBackBuffer(int fb, fb_fix_screeninfo fixedInfo, fb_var_screeninfo varInfo, IntPtr targetAddress)
+        {
+            _fb = fb;
+            _fixedInfo = fixedInfo;
+            _varInfo = varInfo;
+            _targetAddress = targetAddress;
+            Address = Marshal.AllocHGlobal(RowBytes * Size.Height);
+        }
+        
+
+        public void Dispose()
+        {
+            if (Address != IntPtr.Zero)
+            {
+                Marshal.FreeHGlobal(Address);
+                Address = IntPtr.Zero;
+            }
+        }
+
+        public ILockedFramebuffer Lock(Vector dpi)
+        {
+            Monitor.Enter(_lock);
+            try
+            {
+                return new LockedFramebuffer(Address,
+                    new PixelSize((int)_varInfo.xres, (int)_varInfo.yres),
+                    (int)_fixedInfo.line_length, dpi,
+                    _varInfo.bits_per_pixel == 16 ? PixelFormat.Rgb565
+                    : _varInfo.blue.offset == 16 ? PixelFormat.Rgba8888
+                    : PixelFormat.Bgra8888,
+                    () =>
+                    {
+                        try
+                        {
+                            NativeUnsafeMethods.ioctl(_fb, FbIoCtl.FBIO_WAITFORVSYNC, null);
+                            NativeUnsafeMethods.memcpy(_targetAddress, Address, new IntPtr(RowBytes * Size.Height));
+                        }
+                        finally
+                        {
+                            Monitor.Exit(_lock);
+                        }
+                    });
+            }
+            catch
+            {
+                Monitor.Exit(_lock);
+                throw;
+            }
+        }
+
+        public IntPtr Address { get; private set; }
+        public PixelSize Size => new PixelSize((int)_varInfo.xres, (int) _varInfo.yres);
+        public int RowBytes => (int) _fixedInfo.line_length;
+    }
+}
diff --git a/src/Linux/Avalonia.LinuxFramebuffer/Output/FbdevOutput.cs b/src/Linux/Avalonia.LinuxFramebuffer/Output/FbdevOutput.cs
index 61f00b2795..f3f9a12ac8 100644
--- a/src/Linux/Avalonia.LinuxFramebuffer/Output/FbdevOutput.cs
+++ b/src/Linux/Avalonia.LinuxFramebuffer/Output/FbdevOutput.cs
@@ -14,6 +14,7 @@ namespace Avalonia.LinuxFramebuffer
         private fb_var_screeninfo _varInfo;
         private IntPtr _mappedLength;
         private IntPtr _mappedAddress;
+        private FbDevBackBuffer _backBuffer;
         public double Scaling { get; set; }
 
         /// <summary>
@@ -146,7 +147,9 @@ namespace Avalonia.LinuxFramebuffer
         {
             if (_fd <= 0)
                 throw new ObjectDisposedException("LinuxFramebuffer");
-            return new LockedFramebuffer(_fd, _fixedInfo, _varInfo, _mappedAddress, new Vector(96, 96) * Scaling);
+            return (_backBuffer ??=
+                    new FbDevBackBuffer(_fd, _fixedInfo, _varInfo, _mappedAddress))
+                .Lock(new Vector(96, 96) * Scaling);
         }
 
 
@@ -165,6 +168,8 @@ namespace Avalonia.LinuxFramebuffer
 
         public void Dispose()
         {
+            _backBuffer?.Dispose();
+            _backBuffer = null;
             ReleaseUnmanagedResources();
             GC.SuppressFinalize(this);
         }