winit update and better support for android resume suspend

Cargo.toml

@@ -98,6 +98,7 @@ serialize = ["bevy_internal/serialize"]
 # Display server protocol support (X11 is enabled by default)
 wayland = ["bevy_internal/wayland"]
 x11 = ["bevy_internal/x11"]
+android = ["bevy_internal/android"]
 
 # Enable rendering of font glyphs using subpixel accuracy
 subpixel_glyph_atlas = ["bevy_internal/subpixel_glyph_atlas"]
@@ -130,6 +131,10 @@ bytemuck = "1.7"
 futures-lite = "1.11.3"
 crossbeam-channel = "0.5.0"
 
+# TODO: Move these
+[patch.crates-io]
+winit = { git = "https://github.com/rust-windowing/winit", branch = "master" }
+
 [[example]]
 name = "hello_world"
 path = "examples/hello_world.rs"

crates/bevy_asset/Cargo.toml

@@ -22,6 +22,7 @@ bevy_log = { path = "../bevy_log", version = "0.9.0" }
 bevy_reflect = { path = "../bevy_reflect", version = "0.9.0", features = ["bevy"] }
 bevy_tasks = { path = "../bevy_tasks", version = "0.9.0" }
 bevy_utils = { path = "../bevy_utils", version = "0.9.0" }
+bevy_winit = { path = "../bevy_winit", version = "0.9.0" }
 
 # other
 serde = { version = "1", features = ["derive"] }
@@ -39,9 +40,6 @@ web-sys = { version = "0.3", features = ["Request", "Window", "Response"] }
 wasm-bindgen-futures = "0.4"
 js-sys = "0.3"
 
-[target.'cfg(target_os = "android")'.dependencies]
-ndk-glue = { version = "0.7" }
-
 [dev-dependencies]
 futures-lite = "1.4.0"
 tempfile = "3.2.0"

crates/bevy_asset/src/io/android_asset_io.rs

@@ -1,6 +1,7 @@
 use crate::{AssetIo, AssetIoError, Metadata};
 use anyhow::Result;
 use bevy_utils::BoxedFuture;
+use bevy_winit::android::AssetManager;
 use std::{
     convert::TryFrom,
     ffi::CString,
@@ -19,21 +20,26 @@ use std::{
 /// [AssetManager]: https://developer.android.com/reference/android/content/res/AssetManager
 pub struct AndroidAssetIo {
     root_path: PathBuf,
+    asset_manager: AssetManager,
 }
 
 impl AndroidAssetIo {
-    pub fn new<P: AsRef<Path>>(path: P) -> Self {
+    /// Creates a new `AndroidAssetIo` from apk
+    ///
+    /// See `get_base_path` below.
+    pub fn new<P: AsRef<Path>>(path: P, asset_manager: AssetManager) -> Self {
         AndroidAssetIo {
             root_path: path.as_ref().to_owned(),
+            asset_manager,
         }
     }
 }
 
 impl AssetIo for AndroidAssetIo {
     fn load_path<'a>(&'a self, path: &'a Path) -> BoxedFuture<'a, Result<Vec<u8>, AssetIoError>> {
         Box::pin(async move {
-            let asset_manager = ndk_glue::native_activity().asset_manager();
-            let mut opened_asset = asset_manager
+            let mut opened_asset = self
+                .asset_manager
                 .open(&CString::new(path.to_str().unwrap()).unwrap())
                 .ok_or(AssetIoError::NotFound(path.to_path_buf()))?;
             let bytes = opened_asset.get_buffer()?;

crates/bevy_asset/src/lib.rs

@@ -85,13 +85,20 @@ impl AssetPlugin {
     ///
     /// This is useful when providing a custom `AssetIo` instance that needs to
     /// delegate to the default `AssetIo` for the platform.
-    pub fn create_platform_default_asset_io(&self) -> Box<dyn AssetIo> {
+    #[allow(unused_variables)]
+    pub fn create_platform_default_asset_io(&self, app: &App) -> Box<dyn AssetIo> {
         #[cfg(all(not(target_arch = "wasm32"), not(target_os = "android")))]
         let source = FileAssetIo::new(&self.asset_folder, self.watch_for_changes);
         #[cfg(target_arch = "wasm32")]
         let source = WasmAssetIo::new(&self.asset_folder);
         #[cfg(target_os = "android")]
-        let source = AndroidAssetIo::new(&self.asset_folder);
+        let source = AndroidAssetIo::new(
+            &self.asset_folder,
+            app.world
+                .resource::<bevy_winit::android::AndroidActivityApp>()
+                .android_app
+                .asset_manager(),
+        );
 
         Box::new(source)
     }
@@ -100,7 +107,8 @@ impl AssetPlugin {
 impl Plugin for AssetPlugin {
     fn build(&self, app: &mut App) {
         if !app.world.contains_resource::<AssetServer>() {
-            let source = self.create_platform_default_asset_io();
+            let source = self.create_platform_default_asset_io(app);
+
             let asset_server = AssetServer::with_boxed_io(source);
             app.insert_resource(asset_server);
         }

crates/bevy_derive/src/bevy_main.rs

@@ -10,12 +10,6 @@ pub fn bevy_main(_attr: TokenStream, item: TokenStream) -> TokenStream {
     );
 
     TokenStream::from(quote! {
-        // use ndk-glue macro to create an activity: https://github.com/rust-windowing/android-ndk-rs/tree/master/ndk-macro
-        #[cfg(target_os = "android")]
-        #[cfg_attr(target_os = "android", bevy::ndk_glue::main(backtrace = "on", ndk_glue = "bevy::ndk_glue"))]
-        fn android_main() {
-            main()
-        }
 
         #[no_mangle]
         #[cfg(target_os = "ios")]

crates/bevy_internal/Cargo.toml

@@ -51,6 +51,7 @@ serialize = ["bevy_core/serialize", "bevy_input/serialize", "bevy_time/serialize
 # Display server protocol support (X11 is enabled by default)
 wayland = ["bevy_winit/wayland"]
 x11 = ["bevy_winit/x11"]
+android = ["bevy_winit/android"]
 
 # enable rendering of font glyphs using subpixel accuracy
 subpixel_glyph_atlas = ["bevy_text/subpixel_glyph_atlas"]
@@ -97,8 +98,3 @@ bevy_text = { path = "../bevy_text", optional = true, version = "0.9.0" }
 bevy_ui = { path = "../bevy_ui", optional = true, version = "0.9.0" }
 bevy_winit = { path = "../bevy_winit", optional = true, version = "0.9.0" }
 bevy_gilrs = { path = "../bevy_gilrs", optional = true, version = "0.9.0" }
-
-[target.'cfg(target_os = "android")'.dependencies]
-# This version *must* be the same as the version used by winit,
-# or Android will break: https://github.com/rust-windowing/winit#android
-ndk-glue = {version = "0.7", features = ["logger"]}

crates/bevy_internal/src/lib.rs

@@ -172,6 +172,3 @@ pub mod dynamic_plugin {
     //! Dynamic linking of plugins
     pub use bevy_dynamic_plugin::*;
 }
-
-#[cfg(target_os = "android")]
-pub use ndk_glue;

crates/bevy_window/src/lib.rs

@@ -17,8 +17,8 @@ pub mod prelude {
     #[doc(hidden)]
     pub use crate::{
         CursorEntered, CursorIcon, CursorLeft, CursorMoved, FileDragAndDrop, MonitorSelection,
-        ReceivedCharacter, Window, WindowDescriptor, WindowMode, WindowMoved, WindowPlugin,
-        WindowPosition, Windows,
+        ReceivedCharacter, Window, WindowDescriptor, WindowLevel, WindowMode, WindowMoved,
+        WindowPlugin, WindowPosition, Windows,
     };
 }
 

crates/bevy_window/src/window.rs

@@ -68,6 +68,34 @@ pub enum PresentMode {
     Fifo = 4, // NOTE: The explicit ordinal values mirror wgpu.
 }
 
+/// A window level groups windows with respect to their z-position.
+///
+/// The relative ordering between windows in different window levels is fixed.
+/// The z-order of a window within the same window level may change dynamically on user interaction.
+///
+/// ## Platform-specific
+///
+/// - **iOS / Android / Web / Wayland:** Unsupported.
+#[repr(C)]
+#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash, Reflect, FromReflect)]
+#[cfg_attr(
+    feature = "serialize", 
+    derive(serde::Serialize, serde::Deserialize), 
+    reflect(Serialize, Deserialize)
+)]
+#[reflect(Debug, PartialEq, Hash)]
+pub enum WindowLevel {
+    /// The default.
+    Normal = 0,
+    /// The window will always be below normal windows.
+    ///
+    /// This is useful for a widget-based app.
+    AlwaysOnBottom = 1,
+
+    /// The window will always be on top of normal windows.
+    AlwaysOnTop = 2,
+}
+
 /// Specifies how the alpha channel of the textures should be handled during compositing.
 #[repr(C)]
 #[derive(Debug, Clone, Copy, PartialEq, Eq, Hash, Reflect, FromReflect)]
@@ -317,7 +345,7 @@ pub struct Window {
     fit_canvas_to_parent: bool,
     command_queue: Vec<WindowCommand>,
     alpha_mode: CompositeAlphaMode,
-    always_on_top: bool,
+    window_level: WindowLevel,
 }
 /// A command to be sent to a window.
 ///
@@ -397,9 +425,9 @@ pub enum WindowCommand {
     SetResizeConstraints {
         resize_constraints: WindowResizeConstraints,
     },
-    /// Set whether the window is always on top.
-    SetAlwaysOnTop {
-        always_on_top: bool,
+    /// Set whether the window level
+    SetWindowLevel {
+        window_level: WindowLevel,
     },
     Close,
 }
@@ -481,7 +509,7 @@ impl Window {
             fit_canvas_to_parent: window_descriptor.fit_canvas_to_parent,
             command_queue: Vec::new(),
             alpha_mode: window_descriptor.alpha_mode,
-            always_on_top: window_descriptor.always_on_top,
+            window_level: window_descriptor.window_level,
         }
     }
     /// Get the window's [`WindowId`].
@@ -861,15 +889,15 @@ impl Window {
     }
     /// Get whether or not the window is always on top.
     #[inline]
-    pub fn always_on_top(&self) -> bool {
-        self.always_on_top
+    pub fn window_level(&self) -> WindowLevel {
+        self.window_level
     }
 
     /// Set whether of not the window is always on top.
-    pub fn set_always_on_top(&mut self, always_on_top: bool) {
-        self.always_on_top = always_on_top;
+    pub fn set_window_level(&mut self, window_level: WindowLevel) {
+        self.window_level = window_level;
         self.command_queue
-            .push(WindowCommand::SetAlwaysOnTop { always_on_top });
+            .push(WindowCommand::SetWindowLevel { window_level });
     }
     /// Close the operating system window corresponding to this [`Window`].
     ///
@@ -1064,12 +1092,12 @@ pub struct WindowDescriptor {
     pub fit_canvas_to_parent: bool,
     /// Specifies how the alpha channel of the textures should be handled during compositing.
     pub alpha_mode: CompositeAlphaMode,
-    /// Sets the window to always be on top of other windows.
+    /// Sets the window level
     ///
     /// ## Platform-specific
     /// - iOS / Android / Web: Unsupported.
     /// - Linux (Wayland): Unsupported.
-    pub always_on_top: bool,
+    pub window_level: WindowLevel,
 }
 
 impl Default for WindowDescriptor {
@@ -1093,7 +1121,7 @@ impl Default for WindowDescriptor {
             canvas: None,
             fit_canvas_to_parent: false,
             alpha_mode: CompositeAlphaMode::Auto,
-            always_on_top: false,
+            window_level: WindowLevel::Normal,
         }
     }
 }

crates/bevy_winit/Cargo.toml

@@ -12,6 +12,7 @@ keywords = ["bevy"]
 trace = []
 wayland = ["winit/wayland"]
 x11 = ["winit/x11"]
+android = ["winit/android-native-activity"]
 
 [dependencies]
 # bevy
@@ -27,6 +28,9 @@ winit = { version = "0.27", default-features = false }
 approx = { version = "0.5", default-features = false }
 raw-window-handle = "0.5"
 
+[target.'cfg(target_os = "android")'.dependencies]
+ndk = "0.7" # Need till https://github.com/rib/android-activity/issues/45
+
 [target.'cfg(target_arch = "wasm32")'.dependencies]
 wasm-bindgen = { version = "0.2" }
 web-sys = "0.3"

crates/bevy_winit/src/android.rs

@@ -0,0 +1,11 @@
+use bevy_ecs::system::Resource;
+
+pub use ndk::asset::AssetManager;
+pub use winit::platform::android::activity::*;
+
+/// Resource containing AndroidApp
+pub struct AndroidActivityApp {
+    pub android_app: AndroidApp,
+}
+
+impl Resource for AndroidActivityApp {}

crates/bevy_winit/src/converters.rs

@@ -5,7 +5,7 @@ use bevy_input::{
     ButtonState,
 };
 use bevy_math::Vec2;
-use bevy_window::{CursorGrabMode, CursorIcon};
+use bevy_window::{CursorGrabMode, CursorIcon, WindowLevel};
 
 pub fn convert_keyboard_input(keyboard_input: &winit::event::KeyboardInput) -> KeyboardInput {
     KeyboardInput {
@@ -275,3 +275,12 @@ pub fn convert_cursor_grab_mode(mode: CursorGrabMode) -> winit::window::CursorGr
         CursorGrabMode::Locked => winit::window::CursorGrabMode::Locked,
     }
 }
+
+/// Map [`bevy_window::WindowLevel`] to [`winit::window::WindowLevel`].
+pub fn convert_window_level(level: WindowLevel) -> winit::window::WindowLevel {
+    match level {
+        WindowLevel::Normal => winit::window::WindowLevel::Normal,
+        WindowLevel::AlwaysOnTop => winit::window::WindowLevel::AlwaysOnTop,
+        WindowLevel::AlwaysOnBottom => winit::window::WindowLevel::AlwaysOnBottom,
+    }
+}