From 179201da7d420a8ac5618fc8360db21e6b050a03 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jonas=20=C3=85dahl?= <jadahl@gmail.com>
Date: Mon, 31 Mar 2025 14:55:45 +0200
Subject: [PATCH] output: Add pause/resume signals

These gets signalled when the logind session becomes inactive/active,
e.g. VT switches.

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/4378>
---
 src/backends/meta-backend.c | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/src/backends/meta-backend.c b/src/backends/meta-backend.c
index 6956feb76..6b37c54ea 100644
--- a/src/backends/meta-backend.c
+++ b/src/backends/meta-backend.c
@@ -123,6 +123,8 @@ enum
   LID_IS_CLOSED_CHANGED,
   GPU_ADDED,
   PREPARE_SHUTDOWN,
+  PAUSE,
+  RESUME,
 
   N_SIGNALS
 };
@@ -972,6 +974,20 @@ meta_backend_class_init (MetaBackendClass *klass)
                   0,
                   NULL, NULL, NULL,
                   G_TYPE_NONE, 0);
+  signals[PAUSE] =
+    g_signal_new ("pause",
+                  G_TYPE_FROM_CLASS (klass),
+                  G_SIGNAL_RUN_LAST,
+                  0,
+                  NULL, NULL, NULL,
+                  G_TYPE_NONE, 0);
+  signals[RESUME] =
+    g_signal_new ("resume",
+                  G_TYPE_FROM_CLASS (klass),
+                  G_SIGNAL_RUN_LAST,
+                  0,
+                  NULL, NULL, NULL,
+                  G_TYPE_NONE, 0);
 }
 
 #ifdef HAVE_LOGIND
@@ -981,6 +997,7 @@ meta_backend_pause (MetaBackend *backend)
   COGL_TRACE_BEGIN_SCOPED (MetaBackendPause,
                            "Meta::Backend::pause()");
 
+  g_signal_emit (backend, signals[PAUSE], 0);
   META_BACKEND_GET_CLASS (backend)->pause (backend);
 }
 
@@ -991,6 +1008,7 @@ meta_backend_resume (MetaBackend *backend)
                            "Meta::Backend::resume()");
 
   META_BACKEND_GET_CLASS (backend)->resume (backend);
+  g_signal_emit (backend, signals[RESUME], 0);
 }
 
 static void