Fix fullscreen spanning multiple monitors

Commit a16635c ("Fix fullscreen - remove all the garbage
which breaks things and let Gtk do its job.")
broke fullscreen spanning multiple monitors.

Fix this for GTK3 by using gdk_window_set_fullscreen_mode().
Fixes #650.

Unfortunately, GTK2 has no equivalent.

diff --git a/src/fullscreen.c b/src/fullscreen.c
index 048fe3f..ac7e293 100644 (file)
--- a/src/fullscreen.c
+++ b/src/fullscreen.c
@@ -248,13 +248,6 @@ FullScreenData *fullscreen_start(GtkWidget *window, ImageWindow *imd,
        gtk_window_set_decorated(GTK_WINDOW(fs->window), FALSE);
        gtk_container_set_border_width(GTK_CONTAINER(fs->window), 0);
 
-       /* make window fullscreen -- let Gtk do it's job, don't screw it in any way */
-       gtk_window_fullscreen(GTK_WINDOW(fs->window));
-
-       /* move it to requested screen */
-       if (options->fullscreen.screen >= 0) {
-               gtk_window_set_screen(GTK_WINDOW(fs->window), screen);
-       }
 
        /* keep window above others, if requested */
        if (options->fullscreen.above) {
@@ -281,6 +274,22 @@ FullScreenData *fullscreen_start(GtkWidget *window, ImageWindow *imd,
                        GDK_HINT_WIN_GRAVITY | GDK_HINT_USER_POS | GDK_HINT_USER_SIZE);
 
        gtk_widget_realize(fs->window);
+#if GTK_CHECK_VERSION(3,8,0)
+       if ((options->fullscreen.screen % 100) == 0) {
+               GdkWindow *gdkwin;
+               gdkwin = gtk_widget_get_window(fs->window);
+               if (gdkwin != NULL)
+                       gdk_window_set_fullscreen_mode(gdkwin, GDK_FULLSCREEN_ON_ALL_MONITORS);
+       }
+#endif
+       /* make window fullscreen -- let Gtk do it's job, don't screw it in any way */
+       gtk_window_fullscreen(GTK_WINDOW(fs->window));
+
+       /* move it to requested screen */
+       if (options->fullscreen.screen >= 0) {
+               gtk_window_set_screen(GTK_WINDOW(fs->window), screen);
+
+       }
 
        fs->imd = image_new(FALSE);