Desktop: Add window abstraction layer (#3299)

* window abstraction

* fix linux

* fix windows

* fix fmt

* remove windows file that was left

* use self

Author: timon-schelling

desktop/src/app.rs

@@ -1,7 +1,6 @@
 use rfd::AsyncFileDialog;
 use std::fs;
 use std::path::PathBuf;
-use std::sync::Arc;
 use std::sync::mpsc::Receiver;
 use std::sync::mpsc::Sender;
 use std::sync::mpsc::SyncSender;
@@ -12,22 +11,20 @@ use winit::application::ApplicationHandler;
 use winit::event::WindowEvent;
 use winit::event_loop::ActiveEventLoop;
 use winit::event_loop::ControlFlow;
-use winit::window::Window;
 use winit::window::WindowId;
 
 use crate::cef;
 use crate::consts::CEF_MESSAGE_LOOP_MAX_ITERATIONS;
 use crate::event::{AppEvent, AppEventScheduler};
-use crate::native_window;
 use crate::persist::PersistentData;
 use crate::render::GraphicsState;
+use crate::window::Window;
 use graphite_desktop_wrapper::messages::{DesktopFrontendMessage, DesktopWrapperMessage, Platform};
 use graphite_desktop_wrapper::{DesktopWrapper, NodeGraphExecutionResult, WgpuContext, serialize_frontend_messages};
 
 pub(crate) struct App {
 	cef_context: Box<dyn cef::CefContext>,
-	window: Option<Arc<dyn Window>>,
-	native_window: native_window::NativeWindowHandle,
+	window: Option<Window>,
 	cef_schedule: Option<Instant>,
 	cef_window_size_sender: Sender<cef::WindowSize>,
 	graphics_state: Option<GraphicsState>,
@@ -82,7 +79,6 @@ impl App {
 			web_communication_initialized: false,
 			web_communication_startup_buffer: Vec::new(),
 			persistent_data,
-			native_window: Default::default(),
 			launch_documents,
 		}
 	}
@@ -173,18 +169,17 @@ impl App {
 			}
 			DesktopFrontendMessage::MinimizeWindow => {
 				if let Some(window) = &self.window {
-					window.set_minimized(true);
+					window.minimize();
 				}
 			}
 			DesktopFrontendMessage::MaximizeWindow => {
 				if let Some(window) = &self.window {
-					let maximized = !window.is_maximized();
-					window.set_maximized(maximized);
+					window.toggle_maximize();
 				}
 			}
 			DesktopFrontendMessage::DragWindow => {
 				if let Some(window) = &self.window {
-					let _ = window.drag_window();
+					let _ = window.start_drag();
 				}
 			}
 			DesktopFrontendMessage::CloseWindow => {
@@ -348,15 +343,11 @@ impl App {
 }
 impl ApplicationHandler for App {
 	fn can_create_surfaces(&mut self, event_loop: &dyn ActiveEventLoop) {
-		let window_attributes = self.native_window.build(event_loop);
-
-		let window: Arc<dyn Window> = Arc::from(event_loop.create_window(window_attributes).unwrap());
-
-		self.native_window.setup(window.as_ref());
+		let window = Window::new(event_loop);
+		self.window = Some(window);
 
-		let graphics_state = GraphicsState::new(window.clone(), self.wgpu_context.clone());
+		let graphics_state = GraphicsState::new(self.window.as_ref().unwrap(), self.wgpu_context.clone());
 
-		self.window = Some(window);
 		self.graphics_state = Some(graphics_state);
 
 		tracing::info!("Winit window created and ready");
@@ -397,7 +388,7 @@ impl ApplicationHandler for App {
 				let Some(ref mut graphics_state) = self.graphics_state else { return };
 				// Only rerender once we have a new UI texture to display
 				if let Some(window) = &self.window {
-					match graphics_state.render(window.as_ref()) {
+					match graphics_state.render(window) {
 						Ok(_) => {}
 						Err(wgpu::SurfaceError::Lost) => {
 							tracing::warn!("lost surface");

desktop/src/lib.rs

@@ -10,9 +10,9 @@ mod cef;
 mod cli;
 mod dirs;
 mod event;
-mod native_window;
 mod persist;
 mod render;
+mod window;
 
 mod gpu_context;
 

desktop/src/native_window.rs

@@ -1,5 +1,4 @@
-use std::sync::Arc;
-use winit::window::Window;
+use crate::window::Window;
 
 use graphite_desktop_wrapper::{Color, WgpuContext, WgpuExecutor};
 
@@ -24,10 +23,9 @@ pub(crate) struct GraphicsState {
 }
 
 impl GraphicsState {
-	pub(crate) fn new(window: Arc<dyn Window>, context: WgpuContext) -> Self {
+	pub(crate) fn new(window: &Window, context: WgpuContext) -> Self {
 		let size = window.surface_size();
-
-		let surface = context.instance.create_surface(window).unwrap();
+		let surface = window.create_surface(context.instance.clone());
 
 		let surface_caps = surface.get_capabilities(&context.adapter);
 		let surface_format = surface_caps.formats.iter().find(|f| f.is_srgb()).copied().unwrap_or(surface_caps.formats[0]);
@@ -232,7 +230,7 @@ impl GraphicsState {
 		self.bind_overlays_texture(texture);
 	}
 
-	pub(crate) fn render(&mut self, window: &dyn Window) -> Result<(), wgpu::SurfaceError> {
+	pub(crate) fn render(&mut self, window: &Window) -> Result<(), wgpu::SurfaceError> {
 		if let Some(scene) = self.overlays_scene.take() {
 			self.render_overlays(scene);
 		}

desktop/src/render/graphics_state.rs

@@ -0,0 +1,87 @@
+use std::sync::Arc;
+use winit::event_loop::ActiveEventLoop;
+use winit::window::{Window as WinitWindow, WindowAttributes};
+
+use crate::consts::APP_NAME;
+
+pub(crate) trait NativeWindow {
+	fn configure(attributes: WindowAttributes, event_loop: &dyn ActiveEventLoop) -> WindowAttributes;
+	fn new(window: &dyn WinitWindow) -> Self;
+}
+
+#[cfg(target_os = "linux")]
+mod linux;
+#[cfg(target_os = "linux")]
+use linux as native;
+
+#[cfg(target_os = "macos")]
+mod mac;
+#[cfg(target_os = "macos")]
+use mac as native;
+
+#[cfg(target_os = "windows")]
+mod win;
+#[cfg(target_os = "windows")]
+use win as native;
+
+pub(crate) struct Window {
+	winit_window: Arc<dyn winit::window::Window>,
+	#[allow(dead_code)]
+	native_handle: native::NativeWindowImpl,
+}
+
+impl Window {
+	pub(crate) fn new(event_loop: &dyn ActiveEventLoop) -> Self {
+		let mut attributes = WindowAttributes::default()
+			.with_title(APP_NAME)
+			.with_min_surface_size(winit::dpi::LogicalSize::new(400, 300))
+			.with_surface_size(winit::dpi::LogicalSize::new(1200, 800))
+			.with_resizable(true)
+			.with_theme(Some(winit::window::Theme::Dark));
+
+		attributes = native::NativeWindowImpl::configure(attributes, event_loop);
+
+		let winit_window = event_loop.create_window(attributes).unwrap();
+		let native_handle = native::NativeWindowImpl::new(winit_window.as_ref());
+		Self {
+			winit_window: winit_window.into(),
+			native_handle,
+		}
+	}
+
+	pub(crate) fn request_redraw(&self) {
+		self.winit_window.request_redraw();
+	}
+
+	pub(crate) fn create_surface(&self, instance: Arc<wgpu::Instance>) -> wgpu::Surface<'static> {
+		instance.create_surface(self.winit_window.clone()).unwrap()
+	}
+
+	pub(crate) fn pre_present_notify(&self) {
+		self.winit_window.pre_present_notify();
+	}
+
+	pub(crate) fn surface_size(&self) -> winit::dpi::PhysicalSize<u32> {
+		self.winit_window.surface_size()
+	}
+
+	pub(crate) fn minimize(&self) {
+		self.winit_window.set_minimized(true);
+	}
+
+	pub(crate) fn toggle_maximize(&self) {
+		self.winit_window.set_maximized(!self.winit_window.is_maximized());
+	}
+
+	pub(crate) fn is_maximized(&self) -> bool {
+		self.winit_window.is_maximized()
+	}
+
+	pub(crate) fn start_drag(&self) {
+		let _ = self.winit_window.drag_window();
+	}
+
+	pub(crate) fn set_cursor(&self, cursor: winit::cursor::Cursor) {
+		self.winit_window.set_cursor(cursor);
+	}
+}

desktop/src/window.rs

@@ -0,0 +1,27 @@
+use winit::event_loop::ActiveEventLoop;
+use winit::platform::wayland::ActiveEventLoopExtWayland;
+use winit::platform::wayland::WindowAttributesWayland;
+use winit::platform::x11::WindowAttributesX11;
+use winit::window::{Window, WindowAttributes};
+
+use crate::consts::{APP_ID, APP_NAME};
+
+use super::NativeWindow;
+
+pub(super) struct NativeWindowImpl {}
+
+impl NativeWindow for NativeWindowImpl {
+	fn configure(attributes: WindowAttributes, event_loop: &dyn ActiveEventLoop) -> WindowAttributes {
+		if event_loop.is_wayland() {
+			let wayland_attributes = WindowAttributesWayland::default().with_name(APP_ID, "").with_prefer_csd(true);
+			attributes.with_platform_attributes(Box::new(wayland_attributes))
+		} else {
+			let x11_attributes = WindowAttributesX11::default().with_name(APP_ID, APP_NAME);
+			attributes.with_platform_attributes(Box::new(x11_attributes))
+		}
+	}
+
+	fn new(_window: &dyn Window) -> Self {
+		NativeWindowImpl {}
+	}
+}

desktop/src/window/linux.rs

@@ -0,0 +1,20 @@
+use winit::event_loop::ActiveEventLoop;
+use winit::window::{Window, WindowAttributes};
+
+use super::NativeWindow;
+
+pub(super) struct NativeWindowImpl {}
+
+impl NativeWindow for NativeWindowImpl {
+	fn configure(attributes: WindowAttributes, _event_loop: &dyn ActiveEventLoop) -> WindowAttributes {
+		let mac_window = winit::platform::macos::WindowAttributesMacOS::default()
+			.with_titlebar_transparent(true)
+			.with_fullsize_content_view(true)
+			.with_title_hidden(true);
+		attributes.with_platform_attributes(Box::new(mac_window))
+	}
+
+	fn new(_window: &dyn Window) -> Self {
+		NativeWindowImpl {}
+	}
+}

desktop/src/window/mac.rs

@@ -0,0 +1,32 @@
+use winit::event_loop::ActiveEventLoop;
+use winit::window::{Window, WindowAttributes};
+
+use super::NativeWindow;
+
+pub(super) struct NativeWindowImpl {
+	native_handle: native_handle::NativeWindowHandle,
+}
+
+impl NativeWindow for NativeWindowImpl {
+	fn configure(attributes: WindowAttributes, _event_loop: &dyn ActiveEventLoop) -> WindowAttributes {
+		if let Ok(win_icon) = winit::platform::windows::WinIcon::from_resource(1, None) {
+			let icon = winit::icon::Icon(std::sync::Arc::new(win_icon));
+			attributes.with_window_icon(Some(icon))
+		} else {
+			attributes
+		}
+	}
+
+	fn new(window: &dyn Window) -> Self {
+		let native_handle = native_handle::NativeWindowHandle::new(window);
+		NativeWindowImpl { native_handle }
+	}
+}
+
+impl Drop for NativeWindowImpl {
+	fn drop(&mut self) {
+		self.native_handle.destroy();
+	}
+}
+
+mod native_handle;