enhance: allows to move window by dragging toolbar (#1791)

Signed-off-by: leo <[email protected]>

Author: love-linger

src/Views/LauncherPage.axaml

@@ -11,7 +11,11 @@
              x:DataType="vm:LauncherPage">
   <Grid RowDefinitions="36,*">
     <!-- ToolBar -->
-    <Border Grid.Row="0" BorderBrush="{DynamicResource Brush.Border0}" BorderThickness="0,0,0,1" Background="{DynamicResource Brush.ToolBar}">
+    <Border Grid.Row="0"
+            BorderBrush="{DynamicResource Brush.Border0}"
+            BorderThickness="0,0,0,1"
+            Background="{DynamicResource Brush.ToolBar}"
+            PointerPressed="OnToolBarPointerPressed">
       <ContentControl Content="{Binding Data}">
         <ContentControl.DataTemplates>
           <DataTemplate DataType="vm:Welcome">

src/Views/LauncherPage.axaml.cs

@@ -5,6 +5,7 @@
 using Avalonia.Input;
 using Avalonia.Interactivity;
 using Avalonia.LogicalTree;
+using Avalonia.VisualTree;
 
 namespace SourceGit.Views
 {
@@ -93,5 +94,10 @@ private void OnPopupDataContextChanged(object sender, EventArgs e)
                     presenter.Content = App.CreateViewForViewModel(presenter.DataContext);
             }
         }
+
+        private void OnToolBarPointerPressed(object sender, PointerPressedEventArgs e)
+        {
+            this.FindAncestorOfType<ChromelessWindow>()?.BeginMoveWindow(sender, e);
+        }
     }
 }