[gtk+] Drop the monitors-changed signal

[Matthias Clasen <matthiasc src gnome org>]

commit 727aa6cb08f15ee2ee98851b0f4db0cdc44771c1
Author: Matthias Clasen <mclasen redhat com>
Date:   Tue Oct 31 22:26:39 2017 -0400

    Drop the monitors-changed signal
    
    We are not using it anymore.

 gdk/gdkscreen.c               |   34 +---------------------------------
 gdk/gdkscreenprivate.h        |    3 ---
 gdk/mir/gdkmirscreen.c        |    2 --
 gdk/quartz/gdkscreen-quartz.c |    6 ------
 gdk/win32/gdkscreen-win32.c   |    7 +------
 gdk/x11/gdkscreen-x11.c       |    7 +------
 6 files changed, 3 insertions(+), 56 deletions(-)
---
diff --git a/gdk/gdkscreen.c b/gdk/gdkscreen.c
index 6eb99b7..d217508 100644
--- a/gdk/gdkscreen.c
+++ b/gdk/gdkscreen.c
@@ -44,43 +44,11 @@
  */
 
 
-enum
-{
-  SIZE_CHANGED,
-  MONITORS_CHANGED,
-  LAST_SIGNAL
-};
-
-static guint signals[LAST_SIGNAL] = { 0 };
-
 G_DEFINE_TYPE (GdkScreen, gdk_screen, G_TYPE_OBJECT)
 
 static void
 gdk_screen_class_init (GdkScreenClass *klass)
 {
-  GObjectClass *object_class = G_OBJECT_CLASS (klass);
-
-  /**
-   * GdkScreen::monitors-changed:
-   * @screen: the object on which the signal is emitted
-   *
-   * The ::monitors-changed signal is emitted when the number, size
-   * or position of the monitors attached to the screen change. 
-   *
-   * Only for X11 and OS X for now. A future implementation for Win32
-   * may be a possibility.
-   *
-   * Since: 2.14
-   */
-  signals[MONITORS_CHANGED] =
-    g_signal_new (g_intern_static_string ("monitors-changed"),
-                 G_OBJECT_CLASS_TYPE (klass),
-                 G_SIGNAL_RUN_LAST,
-                 G_STRUCT_OFFSET (GdkScreenClass, monitors_changed),
-                 NULL, NULL,
-                 g_cclosure_marshal_VOID__VOID,
-                 G_TYPE_NONE,
-                 0);
 }
 
 static void
@@ -88,7 +56,7 @@ gdk_screen_init (GdkScreen *screen)
 {
 }
 
-void 
+void
 _gdk_screen_close (GdkScreen *screen)
 {
   g_return_if_fail (GDK_IS_SCREEN (screen));
diff --git a/gdk/gdkscreenprivate.h b/gdk/gdkscreenprivate.h
index ffc2131..3b0735e 100644
--- a/gdk/gdkscreenprivate.h
+++ b/gdk/gdkscreenprivate.h
@@ -41,9 +41,6 @@ struct _GdkScreenClass
   GObjectClass parent_class;
 
   GdkDisplay * (* get_display)           (GdkScreen *screen);
-
-  /* Signals: */
-  void (*monitors_changed) (GdkScreen *screen);
 };
 
 G_END_DECLS
diff --git a/gdk/mir/gdkmirscreen.c b/gdk/mir/gdkmirscreen.c
index 558bd0e..76ae194 100644
--- a/gdk/mir/gdkmirscreen.c
+++ b/gdk/mir/gdkmirscreen.c
@@ -118,8 +118,6 @@ config_changed_cb (MirConnection *connection, void *data)
   GdkMirScreen *screen = data;
 
   update_display_config (screen);
-
-  g_signal_emit_by_name (screen, "monitors-changed");
 }
 
 GdkScreen *
diff --git a/gdk/quartz/gdkscreen-quartz.c b/gdk/quartz/gdkscreen-quartz.c
index 452f84b..96ba223 100644
--- a/gdk/quartz/gdkscreen-quartz.c
+++ b/gdk/quartz/gdkscreen-quartz.c
@@ -228,12 +228,6 @@ process_display_reconfiguration (GdkQuartzScreen *screen)
   gdk_quartz_screen_calculate_layout (GDK_QUARTZ_SCREEN (screen));
 
   _gdk_quartz_screen_update_window_sizes (GDK_SCREEN (screen));
-
-  if (screen->emit_monitors_changed)
-    {
-      g_signal_emit_by_name (screen, "monitors-changed");
-      screen->emit_monitors_changed = FALSE;
-    }
 }
 
 static gboolean
diff --git a/gdk/win32/gdkscreen-win32.c b/gdk/win32/gdkscreen-win32.c
index 4a93cc7..4c9b4d7 100644
--- a/gdk/win32/gdkscreen-win32.c
+++ b/gdk/win32/gdkscreen-win32.c
@@ -136,14 +136,9 @@ gdk_win32_screen_init (GdkWin32Screen *win32_screen)
 void
 _gdk_win32_screen_on_displaychange_event (GdkWin32Screen *screen)
 {
-  gboolean monitors_changed;
-
-  monitors_changed = _gdk_win32_display_init_monitors (GDK_WIN32_DISPLAY (_gdk_display));
+  _gdk_win32_display_init_monitors (GDK_WIN32_DISPLAY (_gdk_display));
 
   init_root_window_size (screen);
-
-  if (monitors_changed)
-    g_signal_emit_by_name (screen, "monitors-changed");
 }
 
 void
diff --git a/gdk/x11/gdkscreen-x11.c b/gdk/x11/gdkscreen-x11.c
index bfa18bf..07fbba6 100644
--- a/gdk/x11/gdkscreen-x11.c
+++ b/gdk/x11/gdkscreen-x11.c
@@ -858,8 +858,6 @@ _gdk_x11_screen_set_window_scale (GdkX11Screen *x11_screen,
 
       gdk_monitor_set_scale_factor (monitor, scale);
     }
-
-  g_signal_emit_by_name (GDK_SCREEN (x11_screen), "monitors-changed");
 }
 
 static void
@@ -887,10 +885,7 @@ init_randr_support (GdkScreen *screen)
 static void
 process_monitors_change (GdkScreen *screen)
 {
-  if (init_multihead (screen))
-    {
-      g_signal_emit_by_name (screen, "monitors-changed");
-    }
+  init_multihead (screen);
 }
 
 void