From e7548428cd64022b6b1c39265e0a6fa63a7f78d8 Mon Sep 17 00:00:00 2001
From: Stefano Karapetsas <stefano@karapetsas.com>
Date: Fri, 24 Jan 2014 11:29:35 +0100
Subject: core: Improve GTK3 support

---
 src/core/display.c |  4 ++++
 src/core/errors.c  | 37 +++++++++++++++++++++++++++++++++++++
 src/core/screen.c  | 13 +++++++++++--
 3 files changed, 52 insertions(+), 2 deletions(-)

diff --git a/src/core/display.c b/src/core/display.c
index 584ca098..d950e7ea 100644
--- a/src/core/display.c
+++ b/src/core/display.c
@@ -1454,7 +1454,11 @@ static gboolean maybe_send_event_to_gtk(MetaDisplay* display, XEvent* xevent)
 			return FALSE;
 	}
 
+#if GTK_CHECK_VERSION (3, 0, 0)
+	gdk_window = gdk_x11_window_lookup_for_display(gdk_display, window);
+#else
 	gdk_window = gdk_window_lookup_for_display(gdk_display, window);
+#endif
 
 	if (gdk_window == NULL)
 	{
diff --git a/src/core/errors.c b/src/core/errors.c
index c603ccfd..fc89e096 100644
--- a/src/core/errors.c
+++ b/src/core/errors.c
@@ -28,6 +28,7 @@
 #include <errno.h>
 #include <stdlib.h>
 #include <gdk/gdk.h>
+#include <gtk/gtk.h>
 
 #ifdef __GNUC__
 #define UNUSED_VARIABLE __attribute__ ((unused))
@@ -35,17 +36,51 @@
 #define UNUSED_VARIABLE
 #endif
 
+#if !GTK_CHECK_VERSION (3, 0, 0)
 static int x_error_handler    (Display     *display,
                                XErrorEvent *error);
 static int x_io_error_handler (Display     *display);
+#endif
 
 void
 meta_errors_init (void)
 {
+#if !GTK_CHECK_VERSION (3, 0, 0)
   XSetErrorHandler (x_error_handler);
   XSetIOErrorHandler (x_io_error_handler);
+#endif
+}
+
+#if GTK_CHECK_VERSION (3, 0, 0)
+
+void
+meta_error_trap_push (MetaDisplay *display)
+{
+  gdk_error_trap_push ();
+}
+
+void
+meta_error_trap_pop (MetaDisplay *display,
+                     gboolean     last_request_was_roundtrip)
+{
+  gdk_error_trap_pop_ignored ();
 }
 
+void
+meta_error_trap_push_with_return (MetaDisplay *display)
+{
+  gdk_error_trap_push ();
+}
+
+int
+meta_error_trap_pop_with_return  (MetaDisplay *display,
+                                  gboolean     last_request_was_roundtrip)
+{
+  return gdk_error_trap_pop ();
+}
+
+#else
+
 typedef struct ForeignDisplay ForeignDisplay;
 
 struct ForeignDisplay
@@ -292,3 +327,5 @@ x_io_error_handler (Display *xdisplay)
   
   return 0;
 }
+
+#endif
diff --git a/src/core/screen.c b/src/core/screen.c
index e8fce40a..a35447ad 100644
--- a/src/core/screen.c
+++ b/src/core/screen.c
@@ -1197,6 +1197,7 @@ meta_screen_update_cursor (MetaScreen *screen)
   XFreeCursor (screen->display->xdisplay, xcursor);
 }
 
+#if !GTK_CHECK_VERSION (3, 0, 0)
 #define MAX_PREVIEW_SIZE 150.0
 
 static GdkPixbuf *
@@ -1239,7 +1240,8 @@ get_window_pixbuf (MetaWindow *window,
   g_object_unref (pixbuf);
   return scaled;
 }
-                                         
+#endif
+
 void
 meta_screen_ensure_tab_popup (MetaScreen      *screen,
                               MetaTabList      list_type,
@@ -1272,14 +1274,17 @@ meta_screen_ensure_tab_popup (MetaScreen      *screen,
     {
       MetaWindow *window;
       MetaRectangle r;
+#if !GTK_CHECK_VERSION (3, 0, 0)
       GdkPixbuf *win_pixbuf = NULL;
       int width = 0, height = 0;
+#endif
 
       window = tmp->data;
       
       entries[i].key = (MetaTabEntryKey) window->xwindow;
       entries[i].title = window->title;
 
+#if !GTK_CHECK_VERSION (3, 0, 0)
       /* Only get the pixbuf if the user does NOT have 
          compositing-fast-alt-tab-set to true 
          in GSettings. There is an obvious lag when the pixbuf is
@@ -1312,7 +1317,11 @@ meta_screen_ensure_tab_popup (MetaScreen      *screen,
                                 t_width - icon_width, t_height - icon_height, 
                                 1.0, 1.0, GDK_INTERP_BILINEAR, 255);
         }
-                                
+#else
+      /* at the moment, thumbnails are disabled for GTK3 */
+      entries[i].icon = g_object_ref (window->icon);
+#endif
+
       entries[i].blank = FALSE;
       entries[i].hidden = !meta_window_showing_on_its_workspace (window);
       entries[i].demands_attention = window->wm_state_demands_attention;
-- 
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