From c1c2920bb278188dd52e6fe565e0661075c161d7 Mon Sep 17 00:00:00 2001
From: rabbitism <dongbin@irihi.tech>
Date: Thu, 15 Aug 2024 17:41:31 +0800
Subject: [PATCH] feat: respect AllowAutoHide in DataGrid.

(cherry picked from commit a3ed11fa10ce10f6b8a4e8a18c1e328e5e378f91)
---
 demo/Semi.Avalonia.Demo/Pages/DataGridDemo.axaml |  6 +++++-
 src/Semi.Avalonia.DataGrid/DataGrid.axaml        | 11 +++++++++++
 2 files changed, 16 insertions(+), 1 deletion(-)

diff --git a/demo/Semi.Avalonia.Demo/Pages/DataGridDemo.axaml b/demo/Semi.Avalonia.Demo/Pages/DataGridDemo.axaml
index ba7f847..d2c8add 100644
--- a/demo/Semi.Avalonia.Demo/Pages/DataGridDemo.axaml
+++ b/demo/Semi.Avalonia.Demo/Pages/DataGridDemo.axaml
@@ -14,7 +14,10 @@
     <TabControl>
         <TabItem Header="DataGrid">
            <Grid RowDefinitions="Auto, *">
-               <ToggleSwitch Grid.Row="0" Content="Disable" Name="DisableToggle"></ToggleSwitch>
+               <StackPanel Grid.Row="0" Orientation="Horizontal">
+                   <ToggleSwitch Content="Disable" Name="DisableToggle" />
+                   <ToggleSwitch Content="ScrollViewerHide" Name="ScrollViewerHide" />
+               </StackPanel>
                <DataGrid Grid.Row="1"
                          Margin="8"
                          CanUserReorderColumns="True"
@@ -22,6 +25,7 @@
                          CanUserSortColumns="True"
                          HeadersVisibility="All"
                          IsReadOnly="True"
+                         ScrollViewer.AllowAutoHide="{Binding #ScrollViewerHide.IsChecked}"
                          IsEnabled="{Binding #DisableToggle.IsChecked}"
                          ItemsSource="{Binding GridData1}">
                    <DataGrid.Columns>
diff --git a/src/Semi.Avalonia.DataGrid/DataGrid.axaml b/src/Semi.Avalonia.DataGrid/DataGrid.axaml
index e9a5a88..7793490 100644
--- a/src/Semi.Avalonia.DataGrid/DataGrid.axaml
+++ b/src/Semi.Avalonia.DataGrid/DataGrid.axaml
@@ -471,6 +471,7 @@
         <Setter Property="VerticalScrollBarVisibility" Value="Auto" />
         <Setter Property="SelectionMode" Value="Extended" />
         <Setter Property="GridLinesVisibility" Value="None" />
+        <Setter Property="ScrollViewer.AllowAutoHide" Value="True" />
         <Setter Property="HorizontalGridLinesBrush" Value="{DynamicResource DataGridLineBrush}" />
         <Setter Property="VerticalGridLinesBrush" Value="{DynamicResource DataGridLineBrush}" />
         <Setter Property="DropLocationIndicatorTemplate">
@@ -570,5 +571,15 @@
                 <Setter Property="IsVisible" Value="False" />
             </Style>
         </Style>
+
+        <Style Selector="^[(ScrollViewer.AllowAutoHide)=False]">
+            <Style Selector="^ /template/ DataGridRowsPresenter#PART_RowsPresenter">
+                <Setter Property="Grid.RowSpan" Value="1" />
+                <Setter Property="Grid.ColumnSpan" Value="2" />
+            </Style>
+            <Style Selector="^ /template/ DataGridColumnHeadersPresenter#PART_ColumnHeadersPresenter">
+                <Setter Property="Grid.ColumnSpan" Value="1" />
+            </Style>
+        </Style>
     </ControlTheme>
 </ResourceDictionary>