http://www.uw-madison.lkams.kernel.org/pub/mirrors/fink/distfiles/xscreensaver-4...

[xscreensaver] / driver / demo-Gtk.c

diff --git a/driver/demo-Gtk.c b/driver/demo-Gtk.c
index a1d05ca89273a439ce78e065c73a21698cd5631f..b2620a4f7ef12d17e8488a2a6b1afae377dea322 100644 (file)
--- a/driver/demo-Gtk.c
+++ b/driver/demo-Gtk.c
@@ -1,5 +1,5 @@
 /* demo-Gtk.c --- implements the interactive demo-mode and options dialogs.
- * xscreensaver, Copyright (c) 1993-2002 Jamie Zawinski <jwz@jwz.org>
+ * xscreensaver, Copyright (c) 1993-2003 Jamie Zawinski <jwz@jwz.org>
  *
  * Permission to use, copy, modify, distribute, and sell this software and its
  * documentation for any purpose is hereby granted without fee, provided that
@@ -300,16 +300,14 @@ ensure_selected_item_visible (GtkWidget *widget)
   
   selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (widget));
   if (!gtk_tree_selection_get_selected (selection, &model, &iter))
-    return;
-
-  path = gtk_tree_model_get_path (model, &iter);
+       path = gtk_tree_path_new_first ();
+  else
+       path = gtk_tree_model_get_path (model, &iter);
   
-# if 0
-  gtk_tree_view_scroll_to_cell (GTK_TREE_VIEW (widget),
-                               path, NULL, FALSE, 0.0, 0.0);
-# else
   gtk_tree_view_set_cursor (GTK_TREE_VIEW (widget), path, NULL, FALSE);
-# endif
+
+  gtk_tree_path_free (path);
+
 #else /* !HAVE_GTK2 */
 
   GtkScrolledWindow *scroller = 0;
@@ -433,7 +431,8 @@ warning_dialog (GtkWidget *parent, const char *message,
   while (parent && !parent->window)
     parent = parent->parent;
 
-  if (!GTK_WIDGET (parent)->window) /* too early to pop up transient dialogs */
+  if (!parent ||
+      !GTK_WIDGET (parent)->window) /* too early to pop up transient dialogs */
     {
       fprintf (stderr, "%s: too early for dialog?\n", progname);
       return;
@@ -642,9 +641,9 @@ about_menu_cb (GtkMenuItem *menuitem, gpointer user_data)
      look as good in the plain-old default Latin1 "C" locale.)
    */
 #ifdef HAVE_GTK2
-  sprintf(copy, ("Copyright \xC2\xA9 1991-2002 %s"), s);
+  sprintf(copy, ("Copyright \xC2\xA9 1991-2003 %s"), s);
 #else  /* !HAVE_GTK2 */
-  sprintf(copy, ("Copyright \251 1991-2002 %s"), s);
+  sprintf(copy, ("Copyright \251 1991-2003 %s"), s);
 #endif /* !HAVE_GTK2 */
 
   sprintf (msg, "%s\n\n%s", copy, desc);
@@ -771,7 +770,6 @@ doc_menu_cb (GtkMenuItem *menuitem, gpointer user_data)
   sprintf (help_command + strlen(help_command),
            p->load_url_command, p->help_url, p->help_url);
   strcat (help_command, " ) &");
-fprintf(stderr, "## %s\n", help_command);
   system (help_command);
   free (help_command);
 }
@@ -2345,6 +2343,15 @@ populate_prefs_page (state *s)
 {
   saver_preferences *p = &s->prefs;
 
+  Bool can_lock_p = True;
+
+  /* Disable all the "lock" controls if locking support was not provided
+     at compile-time, or if running on MacOS. */
+# if defined(NO_LOCKING) || defined(__APPLE__)
+  can_lock_p = False;
+# endif
+
+
   /* The file supports timeouts of less than a minute, but the GUI does
      not, so throttle the values to be at least one minute (since "0" is
      a bad rounding choice...)
@@ -2444,8 +2451,9 @@ populate_prefs_page (state *s)
 
     /* Blanking and Locking
      */
-    SENSITIZE ("lock_spinbutton", p->lock_p);
-    SENSITIZE ("lock_mlabel",     p->lock_p);
+    SENSITIZE ("lock_button",     can_lock_p);
+    SENSITIZE ("lock_spinbutton", can_lock_p && p->lock_p);
+    SENSITIZE ("lock_mlabel",     can_lock_p && p->lock_p);
 
     /* DPMS
      */
@@ -3252,7 +3260,14 @@ get_best_gl_visual (state *s)
             sprintf (buf, "%s: running %s", blurb(), av[0]);
             perror (buf);
           }
-        exit (1);                               /* exits fork */
+
+        /* Note that one must use _exit() instead of exit() in procs forked
+           off of Gtk programs -- Gtk installs an atexit handler that has a
+           copy of the X connection (which we've already closed, for safety.)
+           If one uses exit() instead of _exit(), then one sometimes gets a
+           spurious "Gdk-ERROR: Fatal IO error on X server" error message.
+        */
+        _exit (1);                              /* exits fork */
         break;
       }
     default:
@@ -3418,8 +3433,15 @@ launch_preview_subproc (state *s)
 
         exec_command (p->shell, new_cmd, p->nice_inferior);
         /* Don't bother printing an error message when we are unable to
-           exec subprocesses; we handle that by polling the pid later. */
-        exit (1);  /* exits child fork */
+           exec subprocesses; we handle that by polling the pid later.
+
+           Note that one must use _exit() instead of exit() in procs forked
+           off of Gtk programs -- Gtk installs an atexit handler that has a
+           copy of the X connection (which we've already closed, for safety.)
+           If one uses exit() instead of _exit(), then one sometimes gets a
+           spurious "Gdk-ERROR: Fatal IO error on X server" error message.
+        */
+        _exit (1);  /* exits child fork */
         break;
 
       default: