From 08d4addeef94f6729a6378c4f11fb88fdded9560 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jonas=20=C3=85dahl?= <jadahl@gmail.com>
Date: Tue, 29 Nov 2022 16:26:46 +0100
Subject: [PATCH] shell-global: Add 'force-animations' property

Set via a command line argument to gnome-shell. Will allow enabling
animations despite e.g. lack of hardware acceleration otherwise
inhibiting it.

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/2560>
---
 src/main.c         | 11 ++++++++++-
 src/shell-global.c | 16 ++++++++++++++++
 2 files changed, 26 insertions(+), 1 deletion(-)

diff --git a/src/main.c b/src/main.c
index 9913bbccb..5e5c20751 100644
--- a/src/main.c
+++ b/src/main.c
@@ -39,6 +39,7 @@ extern GType gnome_shell_plugin_get_type (void);
 static gboolean is_gdm_mode = FALSE;
 static char *session_mode = NULL;
 static int caught_signal = 0;
+static gboolean force_animations = FALSE;
 
 #define DBUS_REQUEST_NAME_REPLY_PRIMARY_OWNER 1
 #define DBUS_REQUEST_NAME_REPLY_ALREADY_OWNER 4
@@ -530,6 +531,12 @@ GOptionEntry gnome_shell_options[] = {
     N_("List possible modes"),
     NULL
   },
+  {
+    "force-animations", 0, G_OPTION_FLAG_NONE, G_OPTION_ARG_NONE,
+    &force_animations,
+    N_("Force animations to be enabled"),
+    NULL
+  },
   { NULL }
 };
 
@@ -632,7 +639,9 @@ main (int argc, char **argv)
   if (session_mode == NULL)
     session_mode = is_gdm_mode ? (char *)"gdm" : (char *)"user";
 
-  _shell_global_init ("session-mode", session_mode, NULL);
+  _shell_global_init ("session-mode", session_mode,
+                      "force-animations", force_animations,
+                      NULL);
 
   dump_gjs_stack_on_signal (SIGABRT);
   dump_gjs_stack_on_signal (SIGFPE);
diff --git a/src/shell-global.c b/src/shell-global.c
index 365e387f0..61742ee46 100644
--- a/src/shell-global.c
+++ b/src/shell-global.c
@@ -85,6 +85,8 @@ struct _ShellGlobal {
 
   GDBusProxy *switcheroo_control;
   GCancellable *switcheroo_cancellable;
+
+  gboolean force_animations;
 };
 
 enum {
@@ -109,6 +111,7 @@ enum {
   PROP_FRAME_TIMESTAMPS,
   PROP_FRAME_FINISH_TIMESTAMP,
   PROP_SWITCHEROO_CONTROL,
+  PROP_FORCE_ANIMATIONS,
 
   N_PROPS
 };
@@ -235,6 +238,9 @@ shell_global_set_property(GObject         *object,
           }
       }
       break;
+    case PROP_FORCE_ANIMATIONS:
+      global->force_animations = g_value_get_boolean (value);
+      break;
     default:
       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
       break;
@@ -318,6 +324,9 @@ shell_global_get_property(GObject         *object,
     case PROP_SWITCHEROO_CONTROL:
       g_value_set_object (value, global->switcheroo_control);
       break;
+    case PROP_FORCE_ANIMATIONS:
+      g_value_set_boolean (value, global->force_animations);
+      break;
     default:
       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
       break;
@@ -649,6 +658,13 @@ shell_global_class_init (ShellGlobalClass *klass)
                          G_TYPE_DBUS_PROXY,
                          G_PARAM_READABLE | G_PARAM_STATIC_STRINGS);
 
+  props[PROP_FORCE_ANIMATIONS] =
+    g_param_spec_boolean ("force-animations",
+                          "force-animations",
+                          "Force animations to be enabled",
+                          FALSE,
+                          G_PARAM_READWRITE  | G_PARAM_CONSTRUCT| G_PARAM_STATIC_STRINGS);
+
   g_object_class_install_properties (gobject_class, N_PROPS, props);
 }