[gnome-panel/wip-warnings-next] struts: remove GdkScreen from PanelStrut

[Sebastian Geiger <segeiger src gnome org>]

commit 6ceb9f6803b4857cb1baf2a1c26bc666124b4a6a
Author: Sebastian Geiger <sbastig gmx net>
Date:   Mon Feb 24 15:48:30 2020 +0100

    struts: remove GdkScreen from PanelStrut
    
    Since there should only be one GdkScreen for all monitors
    we no longer need to track the GdkScreen pointer in
    the PanelStrut struct. Instead we can use
    gdk_screen_get_default() when needed.

 gnome-panel/panel-struts.c   | 49 +++++++++++++++++++-------------------------
 gnome-panel/panel-struts.h   |  1 -
 gnome-panel/panel-toplevel.c |  1 -
 3 files changed, 21 insertions(+), 30 deletions(-)
---
diff --git a/gnome-panel/panel-struts.c b/gnome-panel/panel-struts.c
index 709113b10..5bdba495c 100644
--- a/gnome-panel/panel-struts.c
+++ b/gnome-panel/panel-struts.c
@@ -30,7 +30,6 @@
 typedef struct {
         PanelToplevel    *toplevel;
 
-       GdkScreen        *screen;
        int               monitor;
        
         PanelOrientation  orientation;
@@ -65,13 +64,16 @@ panel_struts_find_strut (PanelToplevel *toplevel)
 }
 
 static void
-panel_struts_get_monitor_geometry (GdkScreen *screen,
-                                  int        monitor,
+panel_struts_get_monitor_geometry (int        monitor,
                                   int       *x,
                                   int       *y,
                                   int       *width,
                                   int       *height)
 {
+        GdkScreen * screen;
+
+        screen = gdk_screen_get_default ();
+
         *x      = panel_multiscreen_x      (screen, monitor);
         *y      = panel_multiscreen_y      (screen, monitor);
         *width  = panel_multiscreen_width  (screen, monitor);
@@ -181,7 +183,6 @@ panel_struts_allocation_overlapped (PanelStrut   *strut,
 
 static gboolean
 panel_struts_allocate_struts (PanelToplevel *toplevel,
-                             GdkScreen     *screen,
                              int            monitor)
 {
        GSList   *allocated = NULL;
@@ -197,10 +198,10 @@ panel_struts_allocate_struts (PanelToplevel *toplevel,
                gboolean      moved_down;
                int           skip;
 
-               if (strut->screen != screen || strut->monitor != monitor)
+               if (strut->monitor != monitor)
                        continue;
 
-               panel_struts_get_monitor_geometry (strut->screen, strut->monitor,
+               panel_struts_get_monitor_geometry (strut->monitor,
                                                   &monitor_x, &monitor_y,
                                                   &monitor_width, &monitor_height);
 
@@ -249,6 +250,7 @@ panel_struts_allocate_struts (PanelToplevel *toplevel,
 void
 panel_struts_set_window_hint (PanelToplevel *toplevel)
 {
+       GdkScreen  *screen;
        GtkWidget  *widget;
        PanelStrut *strut;
        int         strut_size;
@@ -268,17 +270,18 @@ panel_struts_set_window_hint (PanelToplevel *toplevel)
 
        strut_size = strut->allocated_strut_size;
 
-       screen_width  = gdk_screen_get_width  (strut->screen);
-       screen_height = gdk_screen_get_height (strut->screen);
+       screen = gdk_screen_get_default ();
 
-       panel_struts_get_monitor_geometry (strut->screen,
-                                          strut->monitor,
+       screen_width  = gdk_screen_get_width  (screen);
+       screen_height = gdk_screen_get_height (screen);
+
+       panel_struts_get_monitor_geometry (strut->monitor,
                                           &monitor_x,
                                           &monitor_y,
                                           &monitor_width,
                                           &monitor_height);
 
-        panel_multiscreen_is_at_visible_extreme (strut->screen,
+        panel_multiscreen_is_at_visible_extreme (screen,
                                                  strut->monitor,
                                                  &leftmost,
                                                  &rightmost,
@@ -347,20 +350,15 @@ orientation_to_order (PanelOrientation orientation)
 }
 
 /* Sort in order of
- *   1) screen
- *   2) monitor
- *   3) top, bottom, left, right
- *   4) strut_start ascending
- *   5) strut_end descending
+ *   1) monitor
+ *   2) top, bottom, left, right
+ *   3) strut_start ascending
+ *   4) strut_end descending
  */
 static int
 panel_struts_compare (const PanelStrut *s1,
                      const PanelStrut *s2)
 {
-       if (s1->screen != s2->screen)
-               return gdk_screen_get_number (s1->screen) -
-                       gdk_screen_get_number (s2->screen);
-
        if (s1->monitor != s2->monitor)
                return s1->monitor - s2->monitor;
 
@@ -379,7 +377,6 @@ panel_struts_compare (const PanelStrut *s1,
 
 gboolean
 panel_struts_register_strut (PanelToplevel    *toplevel,
-                            GdkScreen        *screen,
                             int               monitor,
                             PanelOrientation  orientation,
                             int               strut_size,
@@ -396,7 +393,6 @@ panel_struts_register_strut (PanelToplevel    *toplevel,
 
        } else if (strut->toplevel    == toplevel    &&
                   strut->orientation == orientation &&
-                  strut->screen      == screen      &&
                   strut->monitor     == monitor     &&
                   strut->strut_size  == strut_size  &&
                   strut->strut_start == strut_start &&
@@ -405,13 +401,12 @@ panel_struts_register_strut (PanelToplevel    *toplevel,
 
        strut->toplevel    = toplevel;
        strut->orientation = orientation;
-       strut->screen      = screen;
        strut->monitor     = monitor;
        strut->strut_size  = strut_size;
        strut->strut_start = strut_start;
        strut->strut_end   = strut_end;
        
-       panel_struts_get_monitor_geometry (screen, monitor,
+       panel_struts_get_monitor_geometry (monitor,
                                           &monitor_x, &monitor_y,
                                           &monitor_width, &monitor_height);
 
@@ -451,26 +446,24 @@ panel_struts_register_strut (PanelToplevel    *toplevel,
        panel_struts_list = g_slist_sort (panel_struts_list,
                                          (GCompareFunc) panel_struts_compare);
 
-       return panel_struts_allocate_struts (toplevel, screen, monitor);
+       return panel_struts_allocate_struts (toplevel, monitor);
 }
 
 void
 panel_struts_unregister_strut (PanelToplevel *toplevel)
 {
        PanelStrut *strut;
-       GdkScreen  *screen;
        int         monitor;
 
        if (!(strut = panel_struts_find_strut (toplevel)))
                return;
 
-       screen  = strut->screen;
        monitor = strut->monitor;
 
        panel_struts_list = g_slist_remove (panel_struts_list, strut);
        g_free (strut);
 
-       panel_struts_allocate_struts (toplevel, screen, monitor);
+       panel_struts_allocate_struts (toplevel, monitor);
 }
 
 gboolean
diff --git a/gnome-panel/panel-struts.h b/gnome-panel/panel-struts.h
index f4ef9af76..f06e351a2 100644
--- a/gnome-panel/panel-struts.h
+++ b/gnome-panel/panel-struts.h
@@ -27,7 +27,6 @@
 G_BEGIN_DECLS
 
 gboolean panel_struts_register_strut           (PanelToplevel    *toplevel,
-                                               GdkScreen        *screen,
                                                int               monitor,
                                                PanelOrientation  orientation,
                                                int               strut_size,
diff --git a/gnome-panel/panel-toplevel.c b/gnome-panel/panel-toplevel.c
index e9a1c23cf..c3395a0a2 100644
--- a/gnome-panel/panel-toplevel.c
+++ b/gnome-panel/panel-toplevel.c
@@ -1527,7 +1527,6 @@ panel_toplevel_update_struts (PanelToplevel *toplevel, gboolean end_of_animation
 
        if (strut > 0)
                geometry_changed = panel_struts_register_strut (toplevel,
-                                                               screen,
                                                                toplevel->priv->monitor,
                                                                orientation,
                                                                strut,