From d1ceada11996a0137e8fb4377f1011af3f08d24f Mon Sep 17 00:00:00 2001
From: Night_Hunter <samuelhuntnz@gmail.com>
Date: Thu, 5 Sep 2024 21:17:44 +1200
Subject: [PATCH] add option for undecorated_shadow on windows (#2285)

* add option for undecorated_shadow on windows

* formated
---
 core/src/window/settings/windows.rs | 7 +++++++
 winit/src/conversion.rs             | 4 ++++
 2 files changed, 11 insertions(+)

diff --git a/core/src/window/settings/windows.rs b/core/src/window/settings/windows.rs
index 88fe2fbd6a..a47582a63a 100644
--- a/core/src/window/settings/windows.rs
+++ b/core/src/window/settings/windows.rs
@@ -8,6 +8,12 @@ pub struct PlatformSpecific {
 
     /// Whether show or hide the window icon in the taskbar.
     pub skip_taskbar: bool,
+
+    /// Shows or hides the background drop shadow for undecorated windows.
+    ///
+    /// The shadow is hidden by default.
+    /// Enabling the shadow causes a thin 1px line to appear on the top of the window.
+    pub undecorated_shadow: bool,
 }
 
 impl Default for PlatformSpecific {
@@ -15,6 +21,7 @@ impl Default for PlatformSpecific {
         Self {
             drag_and_drop: true,
             skip_taskbar: false,
+            undecorated_shadow: false,
         }
     }
 }
diff --git a/winit/src/conversion.rs b/winit/src/conversion.rs
index e88ff84d78..cc1959eb31 100644
--- a/winit/src/conversion.rs
+++ b/winit/src/conversion.rs
@@ -79,6 +79,10 @@ pub fn window_attributes(
 
         attributes = attributes
             .with_skip_taskbar(settings.platform_specific.skip_taskbar);
+
+        window_builder = window_builder.with_undecorated_shadow(
+            settings.platform_specific.undecorated_shadow,
+        );
     }
 
     #[cfg(target_os = "macos")]