From 603646c7994082a5ed75efc2e712924ffaab0cc6 Mon Sep 17 00:00:00 2001
From: Ferdinand Schober <ferdinand.schober@fau.de>
Date: Thu, 21 Sep 2023 18:22:20 +0200
Subject: [PATCH] Add LM_DEBUG_LAYER_SHELL environment variable

setting LM_DEBUG_LAYER_SHELL to a value will
make the indicators visible
---
 src/backend/producer/wayland.rs | 10 ++++++++--
 src/frontend.rs                 |  2 +-
 2 files changed, 9 insertions(+), 3 deletions(-)

diff --git a/src/backend/producer/wayland.rs b/src/backend/producer/wayland.rs
index 25004f5..4c97c33 100644
--- a/src/backend/producer/wayland.rs
+++ b/src/backend/producer/wayland.rs
@@ -1,7 +1,7 @@
 use crate::{client::{ClientHandle, Position, ClientEvent}, producer::EventProducer};
 use mio::{event::Source, unix::SourceFd};
 
-use std::{os::fd::RawFd, vec::Drain, io::ErrorKind};
+use std::{os::fd::RawFd, vec::Drain, io::ErrorKind, env};
 use memmap::MmapOptions;
 use anyhow::{anyhow, Result};
 
@@ -196,7 +196,13 @@ fn draw(f: &mut File, (width, height): (u32, u32)) {
     let mut buf = BufWriter::new(f);
     for _ in 0..height {
         for _ in 0..width {
-            buf.write_all(&0x00000000u32.to_ne_bytes()).unwrap();
+            if env::var("LM_DEBUG_LAYER_SHELL").ok().is_some() {
+                // AARRGGBB
+                buf.write_all(&0xFF11d116u32.to_ne_bytes()).unwrap();
+            } else {
+                // AARRGGBB
+                buf.write_all(&0x00000000u32.to_ne_bytes()).unwrap();
+            }
         }
     }
 }
diff --git a/src/frontend.rs b/src/frontend.rs
index a763902..ae681ab 100644
--- a/src/frontend.rs
+++ b/src/frontend.rs
@@ -116,6 +116,6 @@ impl Source for FrontendAdapter {
 impl Drop for FrontendAdapter {
     fn drop(&mut self) {
         log::debug!("remove socket: {:?}", self.socket_path);
-        std::fs::remove_file(&self.socket_path).unwrap();
+        let _ = std::fs::remove_file(&self.socket_path);
     }
 }