* xterm.h (GTK_PREREQ): New macro.

All simple uses of GTK_MAJOR_VERSION and GTK_MINOR_VERSION changed
to use this macro instead, for consistency and clarity.

src/ChangeLog

+2013-05-08  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* xterm.h (GTK_PREREQ): New macro.
+	All simple uses of GTK_MAJOR_VERSION and GTK_MINOR_VERSION changed
+	to use this macro instead, for consistency and clarity.
+
 2013-05-08  Eli Zaretskii  <eliz@gnu.org>
 
 	* xdisp.c (row_for_charpos_p): New function, with code of

src/gtkutil.c

@@ -70,13 +70,13 @@ along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
 #define gtk_adjustment_get_step_increment(w) ((w)->step_increment)
 #define gtk_adjustment_set_step_increment(w, s) ((w)->step_increment = (s))
 #endif
-#if GTK_MAJOR_VERSION > 2 || GTK_MINOR_VERSION > 11
+#if GTK_PREREQ (2, 12)
 #define remove_submenu(w) gtk_menu_item_set_submenu ((w), NULL)
 #else
 #define remove_submenu(w) gtk_menu_item_remove_submenu ((w))
 #endif
 
-#if GTK_MAJOR_VERSION > 3 || (GTK_MAJOR_VERSION == 3 && GTK_MINOR_VERSION >= 2)
+#if GTK_PREREQ (3, 2)
 #define USE_NEW_GTK_FONT_CHOOSER 1
 #else
 #define USE_NEW_GTK_FONT_CHOOSER 0

src/xfns.c

@@ -3804,7 +3804,7 @@ If omitted or nil, that stands for the selected frame's display.  */)
    Return false if and only if the workarea information cannot be
    obtained via the _NET_WORKAREA root window property.  */
 
-#if !defined USE_GTK || GTK_MAJOR_VERSION < 3 + (GTK_MINOR_VERSION < 4)
+#if ! (defined USE_GTK && GTK_PREREQ (3, 4))
 static bool
 x_get_net_workarea (struct x_display_info *dpyinfo, XRectangle *rect)
 {
@@ -4265,7 +4265,7 @@ Internal use only, use `display-monitor-attributes-list' instead.  */)
 			 / x_display_pixel_height (dpyinfo));
   gdpy = gdk_x11_lookup_xdisplay (dpyinfo->display);
   gscreen = gdk_display_get_default_screen (gdpy);
-#if GTK_MAJOR_VERSION > 2 || GTK_MINOR_VERSION >= 20
+#if GTK_PREREQ (2, 20)
   primary_monitor = gdk_screen_get_primary_monitor (gscreen);
 #endif
   n_monitors = gdk_screen_get_n_monitors (gscreen);
@@ -4300,7 +4300,7 @@ Internal use only, use `display-monitor-attributes-list' instead.  */)
       gdk_screen_get_monitor_geometry (gscreen, i, &rec);
       geometry = list4i (rec.x, rec.y, rec.width, rec.height);
 
-#if GTK_MAJOR_VERSION > 2 || GTK_MINOR_VERSION >= 14
+#if GTK_PREREQ (2, 14)
       width_mm = gdk_screen_get_monitor_width_mm (gscreen, i);
       height_mm = gdk_screen_get_monitor_height_mm (gscreen, i);
 #endif
@@ -4312,7 +4312,7 @@ Internal use only, use `display-monitor-attributes-list' instead.  */)
 				 list2i (width_mm, height_mm)),
 			  attributes);
 
-#if GTK_MAJOR_VERSION > 3 || (GTK_MAJOR_VERSION == 3 && GTK_MINOR_VERSION >= 4)
+#if GTK_PREREQ (3, 4)
       gdk_screen_get_monitor_workarea (gscreen, i, &rec);
       workarea = list4i (rec.x, rec.y, rec.width, rec.height);
 #else
@@ -4339,7 +4339,7 @@ Internal use only, use `display-monitor-attributes-list' instead.  */)
       attributes = Fcons (Fcons (Qworkarea, workarea), attributes);
 
       attributes = Fcons (Fcons (Qgeometry, geometry), attributes);
-#if GTK_MAJOR_VERSION > 2 || (GTK_MAJOR_VERSION == 2 && GTK_MINOR_VERSION >= 14)
+#if GTK_PREREQ (2, 14)
       {
         char *name = gdk_screen_get_monitor_plug_name (gscreen, i);
         if (name)

src/xterm.c

@@ -9921,7 +9921,7 @@ x_term_init (Lisp_Object display_name, char *xrm_option, char *resource_name)
 
         dpy = DEFAULT_GDK_DISPLAY ();
 
-#if GTK_MAJOR_VERSION <= 2 && GTK_MINOR_VERSION <= 90
+#if ! GTK_PREREQ (2, 90)
         /* Load our own gtkrc if it exists.  */
         {
           const char *file = "~/.emacs.d/gtkrc";

src/xterm.h

@@ -43,6 +43,10 @@ along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
 typedef Widget xt_or_gtk_widget;
 #endif
 
+/* True iff GTK's version is at least MAJOR.MINOR.  */
+#define GTK_PREREQ(major, minor) \
+    ((major) < GTK_MAJOR_VERSION + ((minor) <= GTK_MINOR_VERSION))
+
 #ifdef USE_GTK
 #include <gtk/gtk.h>
 #include <gdk/gdkx.h>
@@ -55,7 +59,7 @@ typedef GtkWidget *xt_or_gtk_widget;
                          XSync (d, b);  } while (0)
 
 /* The GtkTooltip API came in 2.12, but gtk-enable-tooltips in 2.14. */
-#if GTK_MAJOR_VERSION > 2 || GTK_MINOR_VERSION > 13
+#if GTK_PREREQ (2, 14)
 #define USE_GTK_TOOLTIP
 #endif