[Debug Trait] General cleanup and small fixes

src/backend/drm/atomic/mod.rs

@@ -60,7 +60,7 @@ pub struct AtomicDrmDevice<A: AsRawFd + 'static> {
     logger: ::slog::Logger,
 }
 
-impl<A: AsRawFd + 'static> fmt::Debug for AtomicDrmDevice<A> {
+impl<A: AsRawFd + fmt::Debug + 'static> fmt::Debug for AtomicDrmDevice<A> {
     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
         let mut debug = f.debug_struct("AtomicDrmDevice");
 
@@ -68,7 +68,8 @@ impl<A: AsRawFd + 'static> fmt::Debug for AtomicDrmDevice<A> {
             .field("dev", &self.dev)
             .field("dev_id", &self.dev_id)
             .field("active", &self.active)
-            .field("backends", &self.backends);
+            .field("backends", &self.backends)
+            .field("handler", &"...");
 
         #[cfg(feature = "backend_session")]
         debug.field("links", &self.links);
@@ -100,9 +101,10 @@ pub(in crate::backend::drm) struct Dev<A: AsRawFd + 'static> {
     logger: ::slog::Logger,
 }
 
-impl<A: AsRawFd + 'static> fmt::Debug for Dev<A> {
+impl<A: AsRawFd + fmt::Debug + 'static> fmt::Debug for Dev<A> {
     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
         f.debug_struct("Dev")
+            .field("fd", &self.fd)
             .field("privileged", &self.privileged)
             .field("active", &self.active)
             .field("old_state", &self.old_state)

src/backend/drm/atomic/surface.rs

@@ -48,9 +48,10 @@ pub(in crate::backend::drm) struct AtomicDrmSurfaceInternal<A: AsRawFd + 'static
     pub(super) test_buffer: Mutex<Option<(DumbBuffer, framebuffer::Handle)>>,
 }
 
-impl<A: AsRawFd + 'static> fmt::Debug for AtomicDrmSurfaceInternal<A> {
+impl<A: AsRawFd + fmt::Debug + 'static> fmt::Debug for AtomicDrmSurfaceInternal<A> {
     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
         f.debug_struct("AtomicDrmSurfaceInternal")
+            .field("dev", &self.dev)
             .field("crtc", &self.crtc)
             .field("cursor", &self.cursor)
             .field("planse", &self.planes)

src/backend/drm/egl/mod.rs

@@ -73,17 +73,20 @@ where
 impl<B, D> fmt::Debug for EglDevice<B, D>
 where
     B: Backend<Surface = <D as Device>::Surface, Error = <<D as Device>::Surface as Surface>::Error>
+        + fmt::Debug
         + 'static,
-    D: Device + NativeDisplay<B, Arguments = Arguments> + 'static,
+    D: Device + NativeDisplay<B, Arguments = Arguments> + fmt::Debug + 'static,
     <D as Device>::Surface: NativeSurface<Error = <<D as Device>::Surface as Surface>::Error>,
 {
     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
         let mut debug = f.debug_struct("EglDevice");
 
         debug
+            .field("dev", &self.dev)
             .field("logger", &self.logger)
             .field("default_attributes", &self.default_attributes)
-            .field("default_requirements", &self.default_requirements);
+            .field("default_requirements", &self.default_requirements)
+            .field("backends", &"...");
 
         #[cfg(feature = "backend_session")]
         debug.field("links", &self.links);

src/backend/drm/eglstream/mod.rs

@@ -91,10 +91,15 @@ pub struct EglStreamDevice<D: RawDevice + ControlDevice + 'static> {
     links: Vec<crate::signaling::SignalToken>,
 }
 
-impl<D: RawDevice + ControlDevice + 'static> fmt::Debug for EglStreamDevice<D> {
+impl<D: RawDevice + ControlDevice + fmt::Debug + 'static> fmt::Debug for EglStreamDevice<D> {
     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
         let mut debug = f.debug_struct("EglStreamDevice");
-        debug.field("dev", &self.dev).field("logger", &self.logger);
+        debug
+            .field("dev", &self.dev)
+            .field("raw", &self.raw)
+            .field("backends", &"...")
+            .field("logger", &self.logger);
+
         #[cfg(feature = "backend_session")]
         debug.field("links", &self.links);
         debug.finish()

src/backend/graphics/gl.rs

@@ -1,7 +1,6 @@
 //! OpenGL rendering types
 
 use nix::libc::c_void;
-use std::fmt;
 
 use super::{PixelFormat, SwapBuffersError};
 
@@ -40,15 +39,6 @@ pub trait GLGraphicsBackend {
 
     /// Returns the pixel format of the main framebuffer of the context.
     fn get_pixel_format(&self) -> PixelFormat;
-
-    /// Formats the debug value using the given formatter.
-    fn debug_fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
-        f.debug_struct("GLGraphicsBackend")
-            .field("framebuffer_dimensions", &self.get_framebuffer_dimensions())
-            .field("is_current", &self.is_current())
-            .field("pixel_format", &self.get_pixel_format())
-            .finish()
-    }
 }
 
 /// Loads a Raw GLES Interface for a given [`GLGraphicsBackend`]

src/backend/graphics/glium.rs

@@ -25,10 +25,22 @@ pub struct GliumGraphicsBackend<T: GLGraphicsBackend> {
 
 impl<T: GLGraphicsBackend> fmt::Debug for GliumGraphicsBackend<T> {
     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
-        let backend = &self.backend.0.borrow().debug_fmt(f);
+        struct BackendDebug<'a, T: GLGraphicsBackend>(&'a Rc<InternalBackend<T>>);
+        impl<'a, T: GLGraphicsBackend> fmt::Debug for BackendDebug<'a, T> {
+            fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+                let b = &self.0 .0.borrow();
+                f.debug_struct("GLGraphicsBackend")
+                    .field("framebuffer_dimensions", &b.get_framebuffer_dimensions())
+                    .field("is_current", &b.is_current())
+                    .field("pixel_format", &b.get_pixel_format())
+                    .finish()
+            }
+        }
 
         f.debug_struct("GliumGraphicsBackend")
-            .field("backend", backend)
+            .field("context", &"...")
+            .field("backend", &BackendDebug(&self.backend))
+            .field("error_channel", &"...")
             .finish()
     }
 }

src/backend/libinput/mod.rs

@@ -430,13 +430,19 @@ pub struct LibinputSessionInterface<S: Session>(S);
 #[cfg(feature = "backend_session")]
 impl<S: Session> fmt::Debug for LibinputSessionInterface<S> {
     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
-        let sesion = &f
-            .debug_struct("Session")
-            .field("is_active", &self.0.is_active())
-            .field("seat", &self.0.seat())
-            .finish();
+        struct SessionDebug<'a, S: Session>(&'a S);
+        impl<'a, S: Session> fmt::Debug for SessionDebug<'a, S> {
+            fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+                f.debug_struct("Session")
+                    .field("is_active", &self.0.is_active())
+                    .field("seat", &self.0.seat())
+                    .finish()
+            }
+        }
 
-        f.debug_tuple("LibinputSessionInterface").field(sesion).finish()
+        f.debug_tuple("LibinputSessionInterface")
+            .field(&SessionDebug(&self.0))
+            .finish()
     }
 }
 

src/backend/session/dbus/logind.rs

@@ -75,7 +75,7 @@ impl fmt::Debug for LogindSessionImpl {
     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
         f.debug_struct("LogindSessionImpl ")
             .field("session_id", &self.session_id)
-            .field("conn", &"..")
+            .field("conn", &"...")
             .field("session_path", &self.session_path)
             .field("active", &self.active)
             .field("signaler", &self.signaler)

src/backend/winit.rs

@@ -69,10 +69,23 @@ enum Window {
 impl fmt::Debug for Window {
     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
         match self {
-            Window::Wayland { .. } => f.debug_tuple("Window::Wayland"),
-            Window::X11 { .. } => f.debug_tuple("Window::X11"),
+            Window::Wayland { display, context, .. } => f
+                .debug_struct("Window::Wayland")
+                .field("display", &display)
+                .field("context", &context)
+                .field("surface", &"...")
+                .finish(),
+            Window::X11 {
+                display,
+                context,
+                surface,
+            } => f
+                .debug_struct("Window::X11")
+                .field("display", &display)
+                .field("context", &context)
+                .field("surface", &surface)
+                .finish(),
         }
-        .finish()
     }
 }