From 7e330bd65f9ce38744dbaf2084825c1420af892c Mon Sep 17 00:00:00 2001
From: Rui Matos <tiagomatos@gmail.com>
Date: Wed, 7 Jun 2017 19:07:26 +0200
Subject: [PATCH] keybindings: Add a switch-monitor builtin keybinding

Moved from g-s-d's media keys plugin, where it was called "video-out",
since it requires changing the current monitor configuration and we
want to remove the old DBus API.

This implementation is intentionally simple and not really meant for
more than debugging and validating the various configurations. A
better user experience will be introduced in gnome-shell with a custom
keybinding handler.

The default value includes <Super>P in addition to the standard keysym
for historical reasons.

https://bugzilla.gnome.org/show_bug.cgi?id=781906
---
 data/org.gnome.mutter.gschema.xml.in |  5 +++++
 src/core/keybindings.c               | 28 ++++++++++++++++++++++++++++
 src/meta/prefs.h                     |  1 +
 3 files changed, 34 insertions(+)

diff --git a/data/org.gnome.mutter.gschema.xml.in b/data/org.gnome.mutter.gschema.xml.in
index 703817864..4ced07f13 100644
--- a/data/org.gnome.mutter.gschema.xml.in
+++ b/data/org.gnome.mutter.gschema.xml.in
@@ -156,6 +156,11 @@
       <summary>Cancel tab popup</summary>
     </key>
 
+    <key name="switch-monitor" type="as">
+      <default><![CDATA[['<Super>p','XF86Display']]]></default>
+      <summary>Switch monitor configurations</summary>
+    </key>
+
     <key name="rotate-monitor" type="as">
       <default><![CDATA[['XF86RotateWindows']]]></default>
       <summary>Rotates the built-in monitor configuration</summary>
diff --git a/src/core/keybindings.c b/src/core/keybindings.c
index c7e3c8869..518416ce2 100644
--- a/src/core/keybindings.c
+++ b/src/core/keybindings.c
@@ -3328,6 +3328,27 @@ handle_switch_vt (MetaDisplay     *display,
 }
 #endif /* HAVE_NATIVE_BACKEND */
 
+static void
+handle_switch_monitor (MetaDisplay    *display,
+                       MetaScreen     *screen,
+                       MetaWindow     *window,
+                       ClutterKeyEvent *event,
+                       MetaKeyBinding *binding,
+                       gpointer        dummy)
+{
+  MetaBackend *backend = meta_get_backend ();
+  MetaMonitorManager *monitor_manager =
+    meta_backend_get_monitor_manager (backend);
+  MetaMonitorSwitchConfigType config_type =
+    meta_monitor_manager_get_switch_config (monitor_manager);
+
+  if (!meta_monitor_manager_can_switch_config (monitor_manager))
+    return;
+
+  config_type = (config_type + 1) % (META_MONITOR_SWITCH_CONFIG_UNKNOWN);
+  meta_monitor_manager_switch_config (monitor_manager, config_type);
+}
+
 static void
 handle_rotate_monitor (MetaDisplay    *display,
                        MetaScreen     *screen,
@@ -3632,6 +3653,13 @@ init_builtin_key_bindings (MetaDisplay *display)
                           META_KEYBINDING_ACTION_SET_SPEW_MARK,
                           handle_set_spew_mark, 0);
 
+  add_builtin_keybinding (display,
+                          "switch-monitor",
+                          mutter_keybindings,
+                          META_KEY_BINDING_NONE,
+                          META_KEYBINDING_ACTION_SWITCH_MONITOR,
+                          handle_switch_monitor, 0);
+
   add_builtin_keybinding (display,
                           "rotate-monitor",
                           mutter_keybindings,
diff --git a/src/meta/prefs.h b/src/meta/prefs.h
index 961d5abc3..a0175aea9 100644
--- a/src/meta/prefs.h
+++ b/src/meta/prefs.h
@@ -357,6 +357,7 @@ typedef enum _MetaKeyBindingAction
   META_KEYBINDING_ACTION_OVERLAY_KEY,
   META_KEYBINDING_ACTION_ISO_NEXT_GROUP,
   META_KEYBINDING_ACTION_ALWAYS_ON_TOP,
+  META_KEYBINDING_ACTION_SWITCH_MONITOR,
   META_KEYBINDING_ACTION_ROTATE_MONITOR,
 
   META_KEYBINDING_ACTION_LAST