96 lines
2.6 KiB
C
96 lines
2.6 KiB
C
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/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
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/*
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* Copyright (C) 2014 Red Hat
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of the
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* License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
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* 02111-1307, USA.
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*
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* Written by:
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* Jasper St. Pierre <jstpierre@mecheye.net>
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*/
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#include "config.h"
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#include "meta-backend.h"
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#include <gdk/gdkx.h>
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#include <clutter/clutter.h>
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#include <clutter/x11/clutter-x11.h>
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/* Mutter is responsible for pulling events off the X queue, so Clutter
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* doesn't need (and shouldn't) run its normal event source which polls
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* the X fd, but we do have to deal with dispatching events that accumulate
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* in the clutter queue. This happens, for example, when clutter generate
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* enter/leave events on mouse motion - several events are queued in the
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* clutter queue but only one dispatched. It could also happen because of
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* explicit calls to clutter_event_put(). We add a very simple custom
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* event loop source which is simply responsible for pulling events off
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* of the queue and dispatching them before we block for new events.
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*/
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static gboolean
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event_prepare (GSource *source,
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gint *timeout_)
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{
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*timeout_ = -1;
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return clutter_events_pending ();
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}
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static gboolean
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event_check (GSource *source)
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{
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return clutter_events_pending ();
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}
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static gboolean
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event_dispatch (GSource *source,
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GSourceFunc callback,
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gpointer user_data)
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{
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ClutterEvent *event = clutter_event_get ();
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if (event)
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{
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clutter_do_event (event);
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clutter_event_free (event);
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}
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return TRUE;
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}
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static GSourceFuncs event_funcs = {
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event_prepare,
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event_check,
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event_dispatch
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};
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void
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meta_clutter_init (void)
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{
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GSource *source;
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clutter_x11_set_display (GDK_DISPLAY_XDISPLAY (gdk_display_get_default ()));
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clutter_x11_disable_event_retrieval ();
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if (clutter_init (NULL, NULL) != CLUTTER_INIT_SUCCESS)
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g_error ("Unable to initialize Clutter.\n");
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source = g_source_new (&event_funcs, sizeof (GSource));
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g_source_attach (source, NULL);
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g_source_unref (source);
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}
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