From 141eeefd2e3df94adaedda5db2ea6b86006f3ada Mon Sep 17 00:00:00 2001
From: Zhang Dian <54255897+zdpcdt@users.noreply.github.com>
Date: Fri, 13 Mar 2026 16:28:44 +0800
Subject: [PATCH] Sync upstream update. (#764)

---
 src/Semi.Avalonia/Controls/SplitView.axaml  |  5 +-
 src/Semi.Avalonia/Controls/TabControl.axaml | 80 +++++++++++++--------
 2 files changed, 54 insertions(+), 31 deletions(-)

diff --git a/src/Semi.Avalonia/Controls/SplitView.axaml b/src/Semi.Avalonia/Controls/SplitView.axaml
index b244f58..0b2e56e 100644
--- a/src/Semi.Avalonia/Controls/SplitView.axaml
+++ b/src/Semi.Avalonia/Controls/SplitView.axaml
@@ -52,7 +52,7 @@
             <Style Selector="^:overlay">
                 <Style Selector="^ /template/ Panel#PART_PaneRoot">
                     <Setter Property="Width" Value="{Binding RelativeSource={RelativeSource TemplatedParent}, Path=TemplateSettings.ClosedPaneWidth}" />
-                    <Setter Property="Grid.ColumnSpan" Value="1" />
+                    <Setter Property="Grid.ColumnSpan" Value="2" />
                     <Setter Property="Grid.Column" Value="0" />
                 </Style>
                 <Style Selector="^ /template/ Panel#ContentRoot">
@@ -75,8 +75,7 @@
 
             <Style Selector="^:compactoverlay">
                 <Style Selector="^ /template/ Panel#PART_PaneRoot">
-                    <!--  ColumnSpan should be 2  -->
-                    <Setter Property="Grid.ColumnSpan" Value="1" />
+                    <Setter Property="Grid.ColumnSpan" Value="2" />
                     <Setter Property="Grid.Column" Value="0" />
                     <Setter Property="Width" Value="{Binding RelativeSource={RelativeSource TemplatedParent}, Path=TemplateSettings.ClosedPaneWidth}" />
                 </Style>
diff --git a/src/Semi.Avalonia/Controls/TabControl.axaml b/src/Semi.Avalonia/Controls/TabControl.axaml
index cbbd7e7..5094acf 100644
--- a/src/Semi.Avalonia/Controls/TabControl.axaml
+++ b/src/Semi.Avalonia/Controls/TabControl.axaml
@@ -36,13 +36,19 @@
                                 ItemsPanel="{TemplateBinding ItemsPanel}" />
                             <Border Name="PART_BorderSeparator" />
                         </Panel>
-                        <ContentPresenter
-                            Name="PART_SelectedContentHost"
-                            Margin="{TemplateBinding Padding}"
-                            HorizontalContentAlignment="{TemplateBinding HorizontalContentAlignment}"
-                            VerticalContentAlignment="{TemplateBinding VerticalContentAlignment}"
-                            Content="{TemplateBinding SelectedContent}"
-                            ContentTemplate="{TemplateBinding SelectedContentTemplate}" />
+                        <Panel ClipToBounds="True">
+                            <ContentPresenter
+                                Name="PART_SelectedContentHost2"
+                                Margin="{TemplateBinding Padding}"
+                                HorizontalContentAlignment="{TemplateBinding HorizontalContentAlignment}"
+                                VerticalContentAlignment="{TemplateBinding VerticalContentAlignment}"
+                                IsVisible="False" />
+                            <ContentPresenter
+                                Name="PART_SelectedContentHost"
+                                Margin="{TemplateBinding Padding}"
+                                HorizontalContentAlignment="{TemplateBinding HorizontalContentAlignment}"
+                                VerticalContentAlignment="{TemplateBinding VerticalContentAlignment}" />
+                        </Panel>
                     </DockPanel>
                 </Border>
             </ControlTemplate>
@@ -149,13 +155,19 @@
                                 Name="PART_ItemsPresenter"
                                 ItemsPanel="{TemplateBinding ItemsPanel}" />
                         </Panel>
-                        <ContentPresenter
-                            Name="PART_SelectedContentHost"
-                            Margin="{TemplateBinding Padding}"
-                            HorizontalContentAlignment="{TemplateBinding HorizontalContentAlignment}"
-                            VerticalContentAlignment="{TemplateBinding VerticalContentAlignment}"
-                            Content="{TemplateBinding SelectedContent}"
-                            ContentTemplate="{TemplateBinding SelectedContentTemplate}" />
+                        <Panel ClipToBounds="True">
+                            <ContentPresenter
+                                Name="PART_SelectedContentHost2"
+                                Margin="{TemplateBinding Padding}"
+                                HorizontalContentAlignment="{TemplateBinding HorizontalContentAlignment}"
+                                VerticalContentAlignment="{TemplateBinding VerticalContentAlignment}"
+                                IsVisible="False" />
+                            <ContentPresenter
+                                Name="PART_SelectedContentHost"
+                                Margin="{TemplateBinding Padding}"
+                                HorizontalContentAlignment="{TemplateBinding HorizontalContentAlignment}"
+                                VerticalContentAlignment="{TemplateBinding VerticalContentAlignment}" />
+                        </Panel>
                     </DockPanel>
                 </Border>
             </ControlTemplate>
@@ -200,13 +212,19 @@
                             </ScrollViewer>
                             <Border Name="PART_BorderSeparator" />
                         </Panel>
-                        <ContentPresenter
-                            Name="PART_SelectedContentHost"
-                            Margin="{TemplateBinding Padding}"
-                            HorizontalContentAlignment="{TemplateBinding HorizontalContentAlignment}"
-                            VerticalContentAlignment="{TemplateBinding VerticalContentAlignment}"
-                            Content="{TemplateBinding SelectedContent}"
-                            ContentTemplate="{TemplateBinding SelectedContentTemplate}" />
+                        <Panel ClipToBounds="True">
+                            <ContentPresenter
+                                Name="PART_SelectedContentHost2"
+                                Margin="{TemplateBinding Padding}"
+                                HorizontalContentAlignment="{TemplateBinding HorizontalContentAlignment}"
+                                VerticalContentAlignment="{TemplateBinding VerticalContentAlignment}"
+                                IsVisible="False" />
+                            <ContentPresenter
+                                Name="PART_SelectedContentHost"
+                                Margin="{TemplateBinding Padding}"
+                                HorizontalContentAlignment="{TemplateBinding HorizontalContentAlignment}"
+                                VerticalContentAlignment="{TemplateBinding VerticalContentAlignment}" />
+                        </Panel>
                     </DockPanel>
                 </Border>
             </ControlTemplate>
@@ -335,13 +353,19 @@
                                     ItemsPanel="{TemplateBinding ItemsPanel}" />
                             </ScrollViewer>
                         </Panel>
-                        <ContentPresenter
-                            Name="PART_SelectedContentHost"
-                            Margin="{TemplateBinding Padding}"
-                            HorizontalContentAlignment="{TemplateBinding HorizontalContentAlignment}"
-                            VerticalContentAlignment="{TemplateBinding VerticalContentAlignment}"
-                            Content="{TemplateBinding SelectedContent}"
-                            ContentTemplate="{TemplateBinding SelectedContentTemplate}" />
+                        <Panel ClipToBounds="True">
+                            <ContentPresenter
+                                Name="PART_SelectedContentHost2"
+                                Margin="{TemplateBinding Padding}"
+                                HorizontalContentAlignment="{TemplateBinding HorizontalContentAlignment}"
+                                VerticalContentAlignment="{TemplateBinding VerticalContentAlignment}"
+                                IsVisible="False" />
+                            <ContentPresenter
+                                Name="PART_SelectedContentHost"
+                                Margin="{TemplateBinding Padding}"
+                                HorizontalContentAlignment="{TemplateBinding HorizontalContentAlignment}"
+                                VerticalContentAlignment="{TemplateBinding VerticalContentAlignment}" />
+                        </Panel>
                     </DockPanel>
                 </Border>
             </ControlTemplate>