first pass of merging in warp (doesn't build)

crates/galaxyui_core/src/windowing/mod.rs

@@ -8,10 +8,9 @@ use pathfinder_geometry::rect::RectF;
 pub use state::{State, StateEvent, WindowManager};
 pub use system::{CreateWindowingSystemError, System};
 
-use crate::{
-    actions::StandardAction, platform::WindowContext, AppContext, AppContextRefMut, CursorInfo,
-    Event, Scene,
-};
+use crate::actions::StandardAction;
+use crate::platform::WindowContext;
+use crate::{AppContext, AppContextRefMut, CursorInfo, Event, Scene};
 
 /// Result of dispatching an event through the UI framework.
 #[derive(Debug, Clone, Copy, Default)]
@@ -100,7 +99,12 @@ impl<'a> WindowCallbackDispatcher<'a> {
 // support application menus, so these never get called.
 // TODO(CORE-2691): implement native Windows OS app menus
 #[cfg_attr(
-    any(target_os = "linux", target_os = "windows", target_family = "wasm"),
+    any(
+        target_os = "linux",
+        target_os = "freebsd",
+        target_os = "windows",
+        target_family = "wasm"
+    ),
     allow(dead_code)
 )]
 impl WindowCallbackDispatcher<'_> {

crates/galaxyui_core/src/windowing/state.rs

@@ -1,18 +1,15 @@
-use pathfinder_geometry::rect::RectF;
-use std::{
-    collections::VecDeque,
-    fmt::{Display, Formatter},
-};
+use std::collections::VecDeque;
+use std::fmt::{Display, Formatter};
 
-use crate::{
-    geometry,
-    platform::{self, FullscreenState, TerminationMode, WindowFocusBehavior},
-    scene::{CornerRadius, Radius},
-    windowing, DisplayId, DisplayIdx, Entity, ModelContext, OptionalPlatformWindow,
-    SingletonEntity, WindowId,
-};
+use pathfinder_geometry::rect::RectF;
 
 use super::WindowCallbacks;
+use crate::platform::{self, FullscreenState, TerminationMode, WindowFocusBehavior};
+use crate::scene::{CornerRadius, Radius};
+use crate::{
+    geometry, windowing, DisplayId, DisplayIdx, Entity, ModelContext, OptionalPlatformWindow,
+    SingletonEntity, WindowId,
+};
 
 /// Description of the current stage in the lifecycle of the app.
 #[derive(Copy, Clone, Debug, Default, PartialEq, Eq)]
@@ -94,6 +91,14 @@ impl WindowManager {
         self.platform.set_window_bounds(window_id, bound)
     }
 
+    /// Sets the per-window opacity, where `1.0` is fully opaque and `0.0` is fully
+    /// transparent. Cheap alternative to `hide_window` for cases where the window
+    /// only needs to disappear visually (e.g. tab drag preview) without changing
+    /// focus, key state, or z-order.
+    pub fn set_window_alpha(&self, window_id: WindowId, alpha: f32) {
+        self.platform.set_window_alpha(window_id, alpha)
+    }
+
     pub fn cancel_synthetic_drag(&self, window_id: WindowId) {
         self.platform.cancel_synthetic_drag(window_id)
     }