Use GTK_MAJOR_VERSION macro instead of custom one.

gtk/configure.ac

@@ -199,7 +199,6 @@ GTK3_WARNING=no
 if test yes = "$with_gtk3" -a no = "$with_gtk2"; then
     GTK_VERSION="gtk+-3.0"
     GTK3_WARNING=yes
-    CFLAGS="$CFLAGS -DUSE_GTK3"
 else
     GTK_VERSION="gtk+-2.0 >= 2.16"
 fi

gtk/src/gtk_binding.cpp

@@ -1,9 +1,10 @@
 #include <stdlib.h>
 #include <stdio.h>
 #include <string.h>
+#include <gtk/gtk.h>
 #include <gdk/gdk.h>
 #include <gdk/gdkkeysyms.h>
-#ifdef USE_GTK3
+#if GTK_MAJOR_VERSION >= 3
 #include <gdk/gdkkeysyms-compat.h>
 #endif
 

gtk/src/gtk_display_driver_opengl.cpp

@@ -770,7 +770,7 @@ S9xOpenGLDisplayDriver::create_window (int width, int height)
     XMapWindow (display, xwindow);
     XSync (display, False);
 
-#if USE_GTK3
+#if GTK_MAJOR_VERSION >= 3
     gdk_window = gdk_x11_window_foreign_new_for_display (gtk_widget_get_display (drawing_area), xwindow);
 #else
     gdk_window = gdk_window_foreign_new (xwindow);

gtk/src/gtk_display_driver_xv.cpp

@@ -76,7 +76,7 @@ S9xXVDisplayDriver::create_window (int width, int height)
     XMapWindow (display, xwindow);
     XSync (display, False);
 
-#if USE_GTK3
+#if GTK_MAJOR_VERSION >= 3
     gdk_window = gdk_x11_window_foreign_new_for_display (gtk_widget_get_display (drawing_area), xwindow);
 #else
     gdk_window = gdk_window_foreign_new (xwindow);

gtk/src/gtk_preferences.cpp

@@ -2,9 +2,6 @@
 #include <stdlib.h>
 #include <gdk/gdkkeysyms.h>
 #include <gdk/gdkx.h>
-#ifdef USE_GTK3
-#include <gdk/gdkkeysyms-compat.h>
-#endif
 
 #include "gtk_preferences.h"
 #include "gtk_config.h"
@@ -14,6 +11,10 @@
 #include "gtk_display.h"
 #include "gtk_binding.h"
 
+#if GTK_MAJOR_VERSION >= 3
+#include <gdk/gdkkeysyms-compat.h>
+#endif
+
 #define SAME_GAME _("Same location as current game")
 
 gboolean
@@ -565,7 +566,7 @@ event_about_clicked (GtkButton *widget, gpointer data)
 
     gtk_widget_hide (about_dialog->get_widget ("preferences_splash"));
 
-#ifdef USE_GTK3
+#if GTK_MAJOR_VERSION >= 3
     GtkCssProvider *provider;
     GtkStyleContext *context;
 

gtk/src/gtk_s9x.h

@@ -36,7 +36,7 @@
 extern Snes9xWindow *top_level;
 extern Snes9xConfig *gui_config;
 
-#ifdef USE_GTK3
+#if GTK_MAJOR_VERSION >= 3
 #define GDK_COMPAT_WINDOW_XID(window) (gdk_x11_window_get_xid (window))
 #else
 #define GDK_COMPAT_WINDOW_XID(window) (GDK_WINDOW_XWINDOW (window))

gtk/src/gtk_s9xwindow.cpp

@@ -1,9 +1,6 @@
 #include <gdk/gdk.h>
 #include <gdk/gdkx.h>
 #include <gdk/gdkkeysyms.h>
-#ifdef USE_GTK3
-#include <gdk/gdkkeysyms-compat.h>
-#endif
 #include <cairo.h>
 
 #ifdef USE_XV
@@ -24,6 +21,10 @@
 #include "gtk_netplay.h"
 #endif
 
+#if GTK_MAJOR_VERSION >= 3
+#include <gdk/gdkkeysyms-compat.h>
+#endif
+
 static gboolean
 event_main_window_delete (GtkWidget *widget,
                           GdkEvent  *event,
@@ -133,7 +134,7 @@ event_open_netplay (GtkWidget *widget, gpointer data)
     return TRUE;
 }
 
-#ifdef USE_GTK3
+#if GTK_MAJOR_VERSION >= 3
 static gboolean
 event_drawingarea_draw (GtkWidget *widget,
                         cairo_t   *cr,
@@ -147,9 +148,9 @@ event_drawingarea_draw (GtkWidget *widget,
 
     return FALSE;
 }
-#endif
 
-#ifndef USE_GTK3
+#else
+
 static gboolean
 event_drawingarea_expose (GtkWidget      *widget,
                           GdkEventExpose *event,
@@ -623,13 +624,13 @@ Snes9xWindow::Snes9xWindow (Snes9xConfig *config) :
     }
 
     drawing_area = GTK_DRAWING_AREA (get_widget ("drawingarea"));
-#ifndef USE_GTK3
+#if GTK_MAJOR_VERSION < 3
     gtk_widget_set_double_buffered (GTK_WIDGET (drawing_area), FALSE);
 #endif
 
     gtk_widget_realize (window);
     gtk_widget_realize (GTK_WIDGET (drawing_area));
-#ifndef USE_GTK3
+#if GTK_MAJOR_VERSION < 3
     gdk_window_set_back_pixmap (gtk_widget_get_window (window), NULL, FALSE);
     gdk_window_set_back_pixmap (gtk_widget_get_window (GTK_WIDGET (drawing_area)), NULL, FALSE);
 #endif
@@ -646,7 +647,7 @@ Snes9xWindow::Snes9xWindow (Snes9xConfig *config) :
     gtk_widget_hide (get_widget ("sync_clients_separator"));
 #endif
 
-#ifdef USE_GTK3
+#if GTK_MAJOR_VERSION >= 3
     g_signal_connect_data (drawing_area,
                            "draw",
                            G_CALLBACK (event_drawingarea_draw),
@@ -1966,7 +1967,7 @@ Snes9xWindow::get_cairo (void)
 
     GtkWidget *drawing_area = GTK_WIDGET (this->drawing_area);
 
-#ifndef USE_GTK3
+#if GTK_MAJOR_VERSION < 3
     cr = gdk_cairo_create (gtk_widget_get_window (drawing_area));
 #else
     GtkAllocation allocation;
@@ -1988,7 +1989,7 @@ Snes9xWindow::release_cairo (void)
 {
     if (cairo_owned)
     {
-#ifndef USE_GTK3
+#if GTK_MAJOR_VERSION < 3
         cairo_destroy (cr);
 #else
         gdk_window_end_draw_frame (gtk_widget_get_window (GTK_WIDGET (drawing_area)), gdk_drawing_context);

gtk/src/gtk_s9xwindow.h

@@ -83,7 +83,7 @@ class Snes9xWindow : public GtkBuilderWindow
         GtkWidget      *recent_menu;
         cairo_t        *cr;
         int            cairo_owned;
-#ifdef USE_GTK3
+#if GTK_MAJOR_VERSION >= 3
         GdkDrawingContext *gdk_drawing_context;
         cairo_region_t    *cairo_region;
 #endif