Adapt raw_window_handle 0.4 for nih_plug_egui

NIH-plug switched to version 0.5, so this adapter is needed for this
version of nih_plug_egui.

Cargo.lock

@@ -2919,6 +2919,7 @@ dependencies = [
  "lazy_static",
  "nih_plug",
  "parking_lot 0.12.1",
+ "raw-window-handle 0.4.3",
  "serde",
 ]
 

nih_plug_egui/Cargo.toml

@@ -19,6 +19,10 @@ opengl = []
 [dependencies]
 nih_plug = { path = ".." }
 
+# The currently targeted version of baseview uses a different version of
+# `raw_window_handle` than NIH-plug, so we need to manually convert between them
+raw-window-handle = "0.4"
+
 baseview = { git = "https://github.com/RustAudio/baseview.git", rev = "1d9806d5bd92275d0d8142d9c9c90198757b9b25" }
 crossbeam = "0.8"
 # The `egui-default-features` feature enables the default features. This makes

nih_plug_egui/src/editor.rs

@@ -7,6 +7,7 @@ use egui::Context;
 use egui_baseview::EguiWindow;
 use nih_plug::prelude::{Editor, GuiContext, ParamSetter, ParentWindowHandle};
 use parking_lot::RwLock;
+use raw_window_handle::{HasRawWindowHandle, RawWindowHandle};
 use std::sync::atomic::Ordering;
 use std::sync::Arc;
 
@@ -28,6 +29,32 @@ pub(crate) struct EguiEditor<T> {
     pub(crate) scaling_factor: AtomicCell<Option<f32>>,
 }
 
+/// This version of `baseview` uses a different version of `raw_window_handle than NIH-plug, so we
+/// need to adapt it ourselves.
+struct ParentWindowHandleAdapter(nih_plug::editor::ParentWindowHandle);
+
+unsafe impl HasRawWindowHandle for ParentWindowHandleAdapter {
+    fn raw_window_handle(&self) -> RawWindowHandle {
+        match self.0 {
+            ParentWindowHandle::X11Window(window) => {
+                let mut handle = raw_window_handle::XcbHandle::empty();
+                handle.window = window;
+                RawWindowHandle::Xcb(handle)
+            }
+            ParentWindowHandle::AppKitNsView(ns_view) => {
+                let mut handle = raw_window_handle::AppKitHandle::empty();
+                handle.ns_view = ns_view;
+                RawWindowHandle::AppKit(handle)
+            }
+            ParentWindowHandle::Win32Hwnd(hwnd) => {
+                let mut handle = raw_window_handle::Win32Handle::empty();
+                handle.hwnd = hwnd;
+                RawWindowHandle::Win32(handle)
+            }
+        }
+    }
+}
+
 impl<T> Editor for EguiEditor<T>
 where
     T: 'static + Send + Sync,
@@ -44,7 +71,7 @@ where
         let (unscaled_width, unscaled_height) = self.egui_state.size();
         let scaling_factor = self.scaling_factor.load();
         let window = EguiWindow::open_parented(
-            &parent,
+            &ParentWindowHandleAdapter(parent),
             WindowOpenOptions {
                 title: String::from("egui window"),
                 // Baseview should be doing the DPI scaling for us