feat(core): add shadow APIs (#6206)

Co-authored-by: Lucas Nogueira <lucas@tauri.studio>

.changes/shadow-api.md

@@ -0,0 +1,5 @@
+---
+'api': minor
+---
+
+Added the `shadow` option when creating a window and `setShadow` function.

.changes/shadow-config.md

@@ -0,0 +1,5 @@
+---
+'tauri-utils': minor
+---
+
+Added the `shadow` option to the window configuration and `set_shadow` option to the `window` allow list.

.changes/shadow.md

@@ -0,0 +1,7 @@
+---
+'tauri': minor
+'tauri-runtime-wry': minor
+'tauri-runtime': minor
+---
+
+Added the `shadow` option when creating a window and `Window::set_shadow`.

core/config-schema/schema.json

@@ -118,6 +118,7 @@
             "setMinSize": false,
             "setPosition": false,
             "setResizable": false,
+            "setShadow": false,
             "setSize": false,
             "setSkipTaskbar": false,
             "setTitle": false,
@@ -393,6 +394,7 @@
               "setMinSize": false,
               "setPosition": false,
               "setResizable": false,
+              "setShadow": false,
               "setSize": false,
               "setSkipTaskbar": false,
               "setTitle": false,
@@ -684,6 +686,11 @@
             "string",
             "null"
           ]
+        },
+        "shadow": {
+          "description": "Whether or not the window has shadow.\n\n## Platform-specific\n\n- **Windows:** - `false` has no effect on decorated window, shadow are always ON. - `true` will make ndecorated window have a 1px white border, and on Windows 11, it will have a rounded corners. - **Linux:** Unsupported.",
+          "default": false,
+          "type": "boolean"
         }
       },
       "additionalProperties": false
@@ -1699,6 +1706,7 @@
             "setMinSize": false,
             "setPosition": false,
             "setResizable": false,
+            "setShadow": false,
             "setSize": false,
             "setSkipTaskbar": false,
             "setTitle": false,
@@ -2031,6 +2039,11 @@
           "default": false,
           "type": "boolean"
         },
+        "setShadow": {
+          "description": "Allows setting the shadow flag of the window.",
+          "default": false,
+          "type": "boolean"
+        },
         "setAlwaysOnTop": {
           "description": "Allows setting the always_on_top flag of the window.",
           "default": false,

core/tauri-runtime-wry/Cargo.toml

@@ -21,11 +21,11 @@ rand = "0.8"
 raw-window-handle = "0.5"
 
 [target."cfg(windows)".dependencies]
-webview2-com = "0.19.1"
+webview2-com = "0.22"
 
-  [target."cfg(windows)".dependencies.windows]
-  version = "0.39.0"
-  features = [ "Win32_Foundation" ]
+[target."cfg(windows)".dependencies.windows]
+version = "0.44"
+features = [ "Win32_Foundation" ]
 
 [target."cfg(any(target_os = \"linux\", target_os = \"dragonfly\", target_os = \"freebsd\", target_os = \"openbsd\", target_os = \"netbsd\"))".dependencies]
 gtk = { version = "0.16", features = [ "v3_24" ] }

core/tauri-runtime-wry/src/lib.rs

@@ -741,7 +741,8 @@ impl WindowBuilder for WindowBuilderWrapper {
         .maximized(config.maximized)
         .always_on_top(config.always_on_top)
         .skip_taskbar(config.skip_taskbar)
-        .theme(config.theme);
+        .theme(config.theme)
+        .shadow(config.shadow);
 
       if let (Some(min_width), Some(min_height)) = (config.min_width, config.min_height) {
         window = window.min_inner_size(min_width, min_height);
@@ -849,6 +850,18 @@ impl WindowBuilder for WindowBuilderWrapper {
     self
   }
 
+  fn shadow(#[allow(unused_mut)] mut self, _enable: bool) -> Self {
+    #[cfg(windows)]
+    {
+      self.inner = self.inner.with_undecorated_shadow(_enable);
+    }
+    #[cfg(target_os = "macos")]
+    {
+      self.inner = self.inner.with_has_shadow(_enable);
+    }
+    self
+  }
+
   #[cfg(windows)]
   fn parent_window(mut self, parent: HWND) -> Self {
     self.inner = self.inner.with_parent_window(parent);
@@ -1066,6 +1079,7 @@ pub enum WindowMessage {
   Hide,
   Close,
   SetDecorations(bool),
+  SetShadow(bool),
   SetAlwaysOnTop(bool),
   SetSize(Size),
   SetMinSize(Option<Size>),
@@ -1430,6 +1444,13 @@ impl<T: UserEvent> Dispatch<T> for WryDispatcher<T> {
     )
   }
 
+  fn set_shadow(&self, enable: bool) -> Result<()> {
+    send_user_message(
+      &self.context,
+      Message::Window(self.window_id, WindowMessage::SetShadow(enable)),
+    )
+  }
+
   fn set_always_on_top(&self, always_on_top: bool) -> Result<()> {
     send_user_message(
       &self.context,
@@ -2420,6 +2441,12 @@ fn handle_user_message<T: UserEvent>(
               panic!("cannot handle `WindowMessage::Close` on the main thread")
             }
             WindowMessage::SetDecorations(decorations) => window.set_decorations(decorations),
+            WindowMessage::SetShadow(_enable) => {
+              #[cfg(windows)]
+              window.set_undecorated_shadow(_enable);
+              #[cfg(target_os = "macos")]
+              window.set_has_shadow(_enable);
+            }
             WindowMessage::SetAlwaysOnTop(always_on_top) => window.set_always_on_top(always_on_top),
             WindowMessage::SetSize(size) => {
               window.set_inner_size(SizeWrapper::from(size).0);

core/tauri-runtime/Cargo.toml

@@ -34,11 +34,11 @@ raw-window-handle = "0.5"
 rand = "0.8"
 
 [target."cfg(windows)".dependencies]
-webview2-com = "0.19.1"
+webview2-com = "0.22"
 
-  [target."cfg(windows)".dependencies.windows]
-  version = "0.39.0"
-  features = [ "Win32_Foundation" ]
+[target."cfg(windows)".dependencies.windows]
+version = "0.44"
+features = [ "Win32_Foundation" ]
 
 [target."cfg(any(target_os = \"linux\", target_os = \"dragonfly\", target_os = \"freebsd\", target_os = \"openbsd\", target_os = \"netbsd\"))".dependencies]
 gtk = { version = "0.16", features = [ "v3_24" ] }

core/tauri-runtime/src/lib.rs

@@ -639,9 +639,12 @@ pub trait Dispatch<T: UserEvent>: Debug + Clone + Send + Sync + Sized + 'static
   /// Closes the window.
   fn close(&self) -> Result<()>;
 
-  /// Updates the hasDecorations flag.
+  /// Updates the decorations flag.
   fn set_decorations(&self, decorations: bool) -> Result<()>;
 
+  /// Updates the shadow flag.
+  fn set_shadow(&self, enable: bool) -> Result<()>;
+
   /// Updates the window alwaysOnTop flag.
   fn set_always_on_top(&self, always_on_top: bool) -> Result<()>;
 

core/tauri-runtime/src/webview.rs

@@ -179,6 +179,18 @@ pub trait WindowBuilder: WindowBuilderBase {
   #[must_use]
   fn skip_taskbar(self, skip: bool) -> Self;
 
+  /// Sets whether or not the window has shadow.
+  ///
+  /// ## Platform-specific
+  ///
+  /// - **Windows:**
+  ///   - `false` has no effect on decorated window, shadows are always ON.
+  ///   - `true` will make ndecorated window have a 1px white border,
+  /// and on Windows 11, it will have a rounded corners.
+  /// - **Linux:** Unsupported.
+  #[must_use]
+  fn shadow(self, enable: bool) -> Self;
+
   /// Sets a parent to the window to be created.
   ///
   /// A child window has the WS_CHILD style and is confined to the client area of its parent window.

core/tauri-utils/Cargo.toml

@@ -41,7 +41,7 @@ infer = "0.7"
 heck = "0.4"
 
 [target."cfg(windows)".dependencies.windows]
-version = "0.39.0"
+version = "0.44.0"
 features = [
   "implement",
   "Win32_Foundation",