From 50fecf084d06f8b982194fdc9cf53a40741d8453 Mon Sep 17 00:00:00 2001
From: vaxerski <43317083+vaxerski@users.noreply.github.com>
Date: Mon, 2 Oct 2023 16:22:39 +0100
Subject: [PATCH] events: set new window alpha to 0 if it's tiled behind
 fullscreen

fixes #3474
---
 src/events/Windows.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/events/Windows.cpp b/src/events/Windows.cpp
index 88ccab22..2ea4e46c 100644
--- a/src/events/Windows.cpp
+++ b/src/events/Windows.cpp
@@ -633,6 +633,9 @@ void Events::listener_mapWindow(void* owner, void* data) {
 
     // recalc the values for this window
     g_pCompositor->updateWindowAnimatedDecorationValues(PWINDOW);
+    // avoid this window being visible
+    if (PWORKSPACE->m_bHasFullscreenWindow && !PWINDOW->m_bIsFullscreen && !PWINDOW->m_bIsFloating)
+        PWINDOW->m_fAlpha.setValueAndWarp(0.f);
 
     g_pProtocolManager->m_pFractionalScaleProtocolManager->setPreferredScaleForSurface(PWINDOW->m_pWLSurface.wlr(), PMONITOR->scale);
 }