layershell: minor fixes to re-mapping of layers

ref #2012

src/Compositor.cpp

@@ -1361,6 +1361,10 @@ void CCompositor::addToFadingOutSafe(PHLLS pLS) {
     m_vSurfacesFadingOut.emplace_back(pLS);
 }
 
+void CCompositor::removeFromFadingOutSafe(PHLLS ls) {
+    std::erase(m_vSurfacesFadingOut, ls);
+}
+
 void CCompositor::addToFadingOutSafe(PHLWINDOW pWindow) {
     const auto FOUND = std::find_if(m_vWindowsFadingOut.begin(), m_vWindowsFadingOut.end(), [&](PHLWINDOWREF& other) { return other.lock() == pWindow; });
 

src/Compositor.hpp

@@ -156,6 +156,7 @@ class CCompositor {
     PHLWINDOW              getX11Parent(PHLWINDOW);
     void                   scheduleFrameForMonitor(CMonitor*);
     void                   addToFadingOutSafe(PHLLS);
+    void                   removeFromFadingOutSafe(PHLLS);
     void                   addToFadingOutSafe(PHLWINDOW);
     PHLWINDOW              getWindowByRegex(const std::string&);
     void                   warpCursorTo(const Vector2D&, bool force = false);

src/desktop/LayerSurface.cpp

@@ -119,6 +119,10 @@ void CLayerSurface::onMap() {
     mapped        = true;
     interactivity = layerSurface->current.interactivity;
 
+    // this layer might be re-mapped.
+    fadingOut = false;
+    g_pCompositor->removeFromFadingOutSafe(self.lock());
+
     // fix if it changed its mon
     const auto PMONITOR = g_pCompositor->getMonitorFromID(monitorID);
 
@@ -204,8 +208,6 @@ void CLayerSurface::onUnmap() {
 
     const bool WASLASTFOCUS = g_pCompositor->m_pLastFocus == surface->resource();
 
-    surface.reset();
-
     if (!PMONITOR)
         return;
 
@@ -221,12 +223,25 @@ void CLayerSurface::onUnmap() {
     g_pHyprRenderer->damageBox(&geomFixed);
 
     g_pInputManager->sendMotionEventsToFocused();
+
+    g_pHyprRenderer->arrangeLayersForMonitor(PMONITOR->ID);
 }
 
 void CLayerSurface::onCommit() {
     if (!layerSurface)
         return;
 
+    if (!mapped) {
+        // we're re-mapping if this is the case
+        if (layerSurface->surface && !layerSurface->surface->current.buffer) {
+            fadingOut = false;
+            geometry  = {};
+            g_pHyprRenderer->arrangeLayersForMonitor(monitorID);
+        }
+
+        return;
+    }
+
     const auto PMONITOR = g_pCompositor->getMonitorFromID(monitorID);
 
     if (!PMONITOR)