From b9911e7d269d31861d8749d2cdca9c6c69cd4f14 Mon Sep 17 00:00:00 2001
From: Mike Gabriel <mike.gabriel@das-netzwerkteam.de>
Date: Tue, 18 Jun 2024 08:39:53 +0200
Subject: src/: Re-introduce having a window manager (metacity this time, with
 keybindings disabled). Make having it conifugrable via GSettings.

---
 .../org.ArcticaProject.arctica-greeter.gschema.xml |  8 +++
 src/arctica-greeter.vala                           | 66 ++++++++++++++++++++++
 src/settings.vala                                  |  1 +
 3 files changed, 75 insertions(+)

diff --git a/data/org.ArcticaProject.arctica-greeter.gschema.xml b/data/org.ArcticaProject.arctica-greeter.gschema.xml
index e42c606..2546206 100644
--- a/data/org.ArcticaProject.arctica-greeter.gschema.xml
+++ b/data/org.ArcticaProject.arctica-greeter.gschema.xml
@@ -117,6 +117,14 @@
       <default>'Noto Sans 11'</default>
       <summary>Font to use.</summary>
     </key>
+    <key name="window-manager" type="s">
+      <choices>
+        <choice value='none'/>
+        <choice value='metacity'/>
+      </choices>
+      <default>'metacity'</default>
+      <summary>If at all and if yes, which window manager to use.</summary>
+    </key>
     <key name="xft-antialias" type="b">
       <default>true</default>
       <summary>Whether to antialias Xft fonts.</summary>
diff --git a/src/arctica-greeter.vala b/src/arctica-greeter.vala
index e7a049d..119f3af 100644
--- a/src/arctica-greeter.vala
+++ b/src/arctica-greeter.vala
@@ -1278,6 +1278,7 @@ public class ArcticaGreeter : Object
 
         Pid atspi_pid = 0;
         Pid nmapplet_pid = 0;
+        Pid windowmanager_pid = 0;
 
         if (!do_test_mode)
         {
@@ -1421,6 +1422,55 @@ public class ArcticaGreeter : Object
 
             activate_upower();
 
+            string wm = AGSettings.get_string (AGSettings.KEY_WINDOW_MANAGER);
+            if (wm == "metacity")
+            {
+                try
+                {
+                    string[] argv;
+
+                    Shell.parse_argv (wm, out argv);
+                    Process.spawn_async (null,
+                                         argv,
+                                         null,
+                                         SpawnFlags.SEARCH_PATH,
+                                         null,
+                                         out windowmanager_pid);
+                    debug ("Launched '%s' WM. PID: %d", wm, windowmanager_pid);
+                }
+                catch (Error e)
+                {
+                    warning ("Error starting the '%s' Window Manager: %s", wm, e.message);
+                }
+
+                Timeout.add (50, () =>
+                    {
+                        try
+                        {
+                            string[] argv;
+                            Pid wm_message_pid = 0;
+
+                            Shell.parse_argv ("%s-message disable-keybindings".printf(wm), out argv);
+
+                            Process.spawn_sync (null,
+                                                argv,
+                                                null,
+                                                SpawnFlags.SEARCH_PATH,
+                                                null,
+                                                null,
+                                                null,
+                                                null);
+                            debug ("Launched '%s-message disable-keybindings' command", wm);
+                            return false;
+                        }
+                        catch (Error e)
+                        {
+                            warning ("Error during '%s-message disable-keybindings' command call: %s", wm, e.message);
+                            return true;
+                        }
+                    });
+            }
+
             greeter.greeter_ready.connect (() => {
                 debug ("Showing greeter");
                 greeter.show ();
@@ -1514,6 +1564,22 @@ public class ArcticaGreeter : Object
                     debug ("GeoClue-2.0 agent terminated with signal %d", Process.term_sig (status));
                 geoclueagent_pid = 0;
             }
+
+            if (windowmanager_pid != 0)
+            {
+#if VALA_0_40
+                Posix.kill (windowmanager_pid, Posix.Signal.TERM);
+#else
+                Posix.kill (windowmanager_pid, Posix.SIGTERM);
+#endif
+                int status;
+                Posix.waitpid (windowmanager_pid, out status, 0);
+                if (Process.if_exited (status))
+                    debug ("Marco Window Manager exited with return value %d", Process.exit_status (status));
+                else
+                    debug ("Marco Window Manager terminated with signal %d", Process.term_sig (status));
+                windowmanager_pid = 0;
+            }
         }
 
         gsettings_mate_desktop_interface.set_int ("window-scaling-factor", wsf_orig);
diff --git a/src/settings.vala b/src/settings.vala
index 6bdfe5d..bb95c9f 100644
--- a/src/settings.vala
+++ b/src/settings.vala
@@ -43,6 +43,7 @@ public class AGSettings : Object
     public const string KEY_CURSOR_THEME_NAME = "cursor-theme-name";
     public const string KEY_CURSOR_THEME_SIZE = "cursor-theme-size";
     public const string KEY_FONT_NAME = "font-name";
+    public const string KEY_WINDOW_MANAGER = "window-manager";
     public const string KEY_XFT_ANTIALIAS = "xft-antialias";
     public const string KEY_XFT_DPI = "xft-dpi";
     public const string KEY_XFT_HINTSTYLE = "xft-hintstyle";
-- 
cgit v1.2.3