[gtk+] win32: get rid of _gdk_screen global variable

[Ignacio Casal Quinteiro <icq src gnome org>]

commit f6cc3be1185d98d71d85f86263edf82c786d9168
Author: Ignacio Casal Quinteiro <icq gnome org>
Date:   Fri Jan 15 11:45:45 2016 -0800

    win32: get rid of _gdk_screen global variable
    
    The screen is part of the display so it should be belong to it.

 gdk/win32/gdkdisplay-win32.c |   20 +++++++++++++-------
 gdk/win32/gdkdisplay-win32.h |    2 ++
 gdk/win32/gdkglobals-win32.c |    1 -
 gdk/win32/gdkprivate-win32.h |    1 -
 gdk/win32/gdkscreen-win32.c  |   14 +++++++-------
 gdk/win32/gdkwindow-win32.c  |    6 +++---
 6 files changed, 25 insertions(+), 19 deletions(-)
---
diff --git a/gdk/win32/gdkdisplay-win32.c b/gdk/win32/gdkdisplay-win32.c
index 29d6e60..aaa611a 100644
--- a/gdk/win32/gdkdisplay-win32.c
+++ b/gdk/win32/gdkdisplay-win32.c
@@ -259,9 +259,11 @@ inner_display_change_window_procedure (HWND   hwnd,
       }
     case WM_DISPLAYCHANGE:
       {
+        GdkWin32Display *win32_display = GDK_WIN32_DISPLAY (_gdk_display);
+
         _gdk_monitor_init ();
-        _gdk_screen_init_root_window_size (GDK_WIN32_SCREEN (_gdk_screen));
-        g_signal_emit_by_name (_gdk_screen, "size_changed");
+        _gdk_screen_init_root_window_size (GDK_WIN32_SCREEN (win32_display->screen));
+        g_signal_emit_by_name (win32_display->screen, "size_changed");
 
         return 0;
       }
@@ -322,6 +324,8 @@ register_display_change_notification (GdkDisplay *display)
 GdkDisplay *
 _gdk_win32_display_open (const gchar *display_name)
 {
+  GdkWin32Display *win32_display;
+
   GDK_NOTE (MISC, g_print ("gdk_display_open: %s\n", (display_name ? display_name : "NULL")));
 
   if (display_name == NULL ||
@@ -341,11 +345,13 @@ _gdk_win32_display_open (const gchar *display_name)
     }
 
   _gdk_display = g_object_new (GDK_TYPE_WIN32_DISPLAY, NULL);
-  _gdk_screen = g_object_new (GDK_TYPE_WIN32_SCREEN, NULL);
+  win32_display = GDK_WIN32_DISPLAY (_gdk_display);
+
+  win32_display->screen = g_object_new (GDK_TYPE_WIN32_SCREEN, NULL);
 
   _gdk_monitor_init ();
-  _gdk_visual_init (_gdk_screen);
-  _gdk_screen_init_root_window (GDK_WIN32_SCREEN (_gdk_screen));
+  _gdk_visual_init (win32_display->screen);
+  _gdk_screen_init_root_window (GDK_WIN32_SCREEN (win32_display->screen));
   _gdk_events_init ();
   _gdk_input_init (_gdk_display);
   _gdk_dnd_init ();
@@ -431,9 +437,9 @@ gdk_win32_display_get_name (GdkDisplay *display)
 static GdkScreen *
 gdk_win32_display_get_default_screen (GdkDisplay *display)
 {
-  g_return_val_if_fail (GDK_IS_DISPLAY (display), NULL);
+  g_return_val_if_fail (GDK_IS_WIN32_DISPLAY (display), NULL);
 
-  return _gdk_screen;
+  return GDK_WIN32_DISPLAY (display)->screen;
 }
 
 static GdkWindow *
diff --git a/gdk/win32/gdkdisplay-win32.h b/gdk/win32/gdkdisplay-win32.h
index 250c13b..cbd4b5d 100644
--- a/gdk/win32/gdkdisplay-win32.h
+++ b/gdk/win32/gdkdisplay-win32.h
@@ -26,6 +26,8 @@ struct _GdkWin32Display
 {
   GdkDisplay display;
 
+  GdkScreen *screen;
+
   Win32CursorTheme *cursor_theme;
   gchar *cursor_theme_name;
   int cursor_theme_size;
diff --git a/gdk/win32/gdkglobals-win32.c b/gdk/win32/gdkglobals-win32.c
index c03a230..0c14a1e 100644
--- a/gdk/win32/gdkglobals-win32.c
+++ b/gdk/win32/gdkglobals-win32.c
@@ -28,7 +28,6 @@
 #include "gdkprivate-win32.h"
 
 GdkDisplay      *_gdk_display = NULL;
-GdkScreen       *_gdk_screen = NULL;
 
 gint             _gdk_num_monitors;
 GdkWin32Monitor  *_gdk_monitors = NULL;
diff --git a/gdk/win32/gdkprivate-win32.h b/gdk/win32/gdkprivate-win32.h
index a4e6809..4d1dc01 100644
--- a/gdk/win32/gdkprivate-win32.h
+++ b/gdk/win32/gdkprivate-win32.h
@@ -256,7 +256,6 @@ void    _gdk_other_api_failed        (const gchar *where,
 extern LRESULT CALLBACK _gdk_win32_window_procedure (HWND, UINT, WPARAM, LPARAM);
 
 extern GdkDisplay       *_gdk_display;
-extern GdkScreen        *_gdk_screen;
 
 extern gint             _gdk_num_monitors;
 typedef struct _GdkWin32Monitor GdkWin32Monitor;
diff --git a/gdk/win32/gdkscreen-win32.c b/gdk/win32/gdkscreen-win32.c
index efbbce0..ad84d41 100644
--- a/gdk/win32/gdkscreen-win32.c
+++ b/gdk/win32/gdkscreen-win32.c
@@ -158,7 +158,7 @@ gdk_win32_screen_get_root_window (GdkScreen *screen)
 static gint
 gdk_win32_screen_get_n_monitors (GdkScreen *screen)
 {
-  g_return_val_if_fail (screen == _gdk_screen, 0);
+  g_return_val_if_fail (screen == gdk_display_get_default_screen (gdk_display_get_default ()), 0);
 
   return _gdk_num_monitors;
 }
@@ -166,7 +166,7 @@ gdk_win32_screen_get_n_monitors (GdkScreen *screen)
 static gint
 gdk_win32_screen_get_primary_monitor (GdkScreen *screen)
 {
-  g_return_val_if_fail (screen == _gdk_screen, 0);
+  g_return_val_if_fail (screen == gdk_display_get_default_screen (gdk_display_get_default ()), 0);
 
   return 0;
 }
@@ -175,7 +175,7 @@ static gint
 gdk_win32_screen_get_monitor_width_mm (GdkScreen *screen,
                                        gint       num_monitor)
 {
-  g_return_val_if_fail (screen == _gdk_screen, 0);
+  g_return_val_if_fail (screen == gdk_display_get_default_screen (gdk_display_get_default ()), 0);
   g_return_val_if_fail (num_monitor < _gdk_num_monitors, 0);
 
   return _gdk_monitors[num_monitor].width_mm;
@@ -185,7 +185,7 @@ static gint
 gdk_win32_screen_get_monitor_height_mm (GdkScreen *screen,
                                         gint       num_monitor)
 {
-  g_return_val_if_fail (screen == _gdk_screen, 0);
+  g_return_val_if_fail (screen == gdk_display_get_default_screen (gdk_display_get_default ()), 0);
   g_return_val_if_fail (num_monitor < _gdk_num_monitors, 0);
 
   return _gdk_monitors[num_monitor].height_mm;
@@ -195,7 +195,7 @@ static gchar *
 gdk_win32_screen_get_monitor_plug_name (GdkScreen *screen,
                                         gint       num_monitor)
 {
-  g_return_val_if_fail (screen == _gdk_screen, 0);
+  g_return_val_if_fail (screen == gdk_display_get_default_screen (gdk_display_get_default ()), 0);
   g_return_val_if_fail (num_monitor < _gdk_num_monitors, 0);
 
   return g_strdup (_gdk_monitors[num_monitor].name);
@@ -206,7 +206,7 @@ gdk_win32_screen_get_monitor_geometry (GdkScreen    *screen,
                                        gint          num_monitor,
                                        GdkRectangle *dest)
 {
-  g_return_if_fail (screen == _gdk_screen);
+  g_return_if_fail (screen == gdk_display_get_default_screen (gdk_display_get_default ()));
   g_return_if_fail (num_monitor < _gdk_num_monitors);
 
   *dest = _gdk_monitors[num_monitor].rect;
@@ -215,7 +215,7 @@ gdk_win32_screen_get_monitor_geometry (GdkScreen    *screen,
 static gint
 gdk_win32_screen_get_number (GdkScreen *screen)
 {
-  g_return_val_if_fail (screen == _gdk_screen, 0);
+  g_return_val_if_fail (screen == gdk_display_get_default_screen (gdk_display_get_default ()), 0);
 
   return 0;
 }
diff --git a/gdk/win32/gdkwindow-win32.c b/gdk/win32/gdkwindow-win32.c
index 9ca07c8..d04bb69 100644
--- a/gdk/win32/gdkwindow-win32.c
+++ b/gdk/win32/gdkwindow-win32.c
@@ -81,7 +81,7 @@ static void    _gdk_win32_impl_release_dc (GdkWindowImplWin32 *impl);
 GdkScreen *
 GDK_WINDOW_SCREEN (GObject *win)
 {
-  return _gdk_screen;
+  return gdk_display_get_default_screen (gdk_display_get_default ());
 }
 
 struct _GdkWin32Window {
@@ -708,7 +708,7 @@ gdk_win32_window_foreign_new_for_display (GdkDisplay      *display,
     return g_object_ref (window);
 
   window = _gdk_display_create_window (display);
-  window->visual = gdk_screen_get_system_visual (_gdk_screen);
+  window->visual = gdk_screen_get_system_visual (gdk_display_get_default_screen (display));
   window->impl = g_object_new (GDK_TYPE_WINDOW_IMPL_WIN32, NULL);
   window->impl_window = window;
   impl = GDK_WINDOW_IMPL_WIN32 (window->impl);
@@ -2136,7 +2136,7 @@ gdk_display_warp_device (GdkDisplay *display,
                          gint        y)
 {
   g_return_if_fail (display == _gdk_display);
-  g_return_if_fail (screen == _gdk_screen);
+  g_return_if_fail (screen == gdk_display_get_default_screen (display));
   g_return_if_fail (GDK_IS_DEVICE (device));
   g_return_if_fail (display == gdk_device_get_display (device));