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-rw-r--r--plugins/font/delayed-dialog.c122
1 files changed, 122 insertions, 0 deletions
diff --git a/plugins/font/delayed-dialog.c b/plugins/font/delayed-dialog.c
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+++ b/plugins/font/delayed-dialog.c
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+/*
+ * Copyright © 2006 Novell, Inc.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2, or (at
+ * your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+ * 02111-1307, USA.
+ */
+
+#include <stdlib.h>
+#include <string.h>
+
+#include <gtk/gtk.h>
+#include <gdk/gdkx.h>
+
+#include "delayed-dialog.h"
+
+static gboolean delayed_show_timeout (gpointer data);
+static GdkFilterReturn message_filter (GdkXEvent *xevent,
+ GdkEvent *event,
+ gpointer data);
+
+static GSList *dialogs = NULL;
+
+/**
+ * mate_settings_delayed_show_dialog:
+ * @dialog: the dialog
+ *
+ * Shows the dialog as with gtk_widget_show(), unless a window manager
+ * hasn't been started yet, in which case it will wait up to 5 seconds
+ * for that to happen before showing the dialog.
+ **/
+void
+mate_settings_delayed_show_dialog (GtkWidget *dialog)
+{
+ GdkDisplay *display = gtk_widget_get_display (dialog);
+ Display *xdisplay = GDK_DISPLAY_XDISPLAY (display);
+ GdkScreen *screen = gtk_widget_get_screen (dialog);
+ GdkAtom manager_atom;
+ char selection_name[10];
+ Atom selection_atom;
+
+ /* We can't use gdk_selection_owner_get() for this, because
+ * it's an unknown out-of-process window.
+ */
+ snprintf (selection_name, sizeof (selection_name), "WM_S%d",
+ gdk_screen_get_number (screen));
+ selection_atom = XInternAtom (xdisplay, selection_name, True);
+ if (selection_atom &&
+ XGetSelectionOwner (xdisplay, selection_atom) != None) {
+ gtk_widget_show (dialog);
+ return;
+ }
+
+ dialogs = g_slist_prepend (dialogs, dialog);
+
+ manager_atom = gdk_atom_intern ("MANAGER", FALSE);
+ gdk_display_add_client_message_filter (display, manager_atom,
+ message_filter, NULL);
+
+ g_timeout_add (5000, delayed_show_timeout, NULL);
+}
+
+static gboolean
+delayed_show_timeout (gpointer data)
+{
+ GSList *l;
+
+ for (l = dialogs; l; l = l->next)
+ gtk_widget_show (l->data);
+ g_slist_free (dialogs);
+ dialogs = NULL;
+
+ /* FIXME: There's no gdk_display_remove_client_message_filter */
+
+ return FALSE;
+}
+
+static GdkFilterReturn
+message_filter (GdkXEvent *xevent, GdkEvent *event, gpointer data)
+{
+ XClientMessageEvent *evt = (XClientMessageEvent *)xevent;
+ char *selection_name = XGetAtomName (evt->display, evt->data.l[1]);
+ int screen;
+ GSList *l, *next;
+
+ if (!dialogs)
+ return GDK_FILTER_CONTINUE;
+
+ if (strncmp (selection_name, "WM_S", 4) != 0) {
+ XFree (selection_name);
+ return GDK_FILTER_CONTINUE;
+ }
+
+ screen = atoi (selection_name + 4);
+
+ for (l = dialogs; l; l = next) {
+ GtkWidget *dialog = l->data;
+ next = l->next;
+
+ if (gdk_screen_get_number (gtk_widget_get_screen (dialog)) == screen) {
+ gtk_widget_show (dialog);
+ dialogs = g_slist_remove (dialogs, dialog);
+ }
+ }
+
+ if (!dialogs) {
+ /* FIXME: There's no gdk_display_remove_client_message_filter */
+ }
+
+ return GDK_FILTER_CONTINUE;
+}