Home | History | Annotate | Download | only in gtk 
      1 /*
      2  * Copyright (C) 2006 Apple Computer, Inc.  All rights reserved.
      3  * Copyright (C) 2006 Michael Emmel mike.emmel (at) gmail.com
      4  * All rights reserved.
      5  *
      6  * Redistribution and use in source and binary forms, with or without
      7  * modification, are permitted provided that the following conditions
      8  * are met:
      9  * 1. Redistributions of source code must retain the above copyright
     10  *    notice, this list of conditions and the following disclaimer.
     11  * 2. Redistributions in binary form must reproduce the above copyright
     12  *    notice, this list of conditions and the following disclaimer in the
     13  *    documentation and/or other materials provided with the distribution.
     14  *
     15  * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
     16  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     17  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     18  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
     19  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
     20  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     21  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
     22  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
     23  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     24  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     25  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     26  */
     27 
     28 #include "config.h"
     29 #include "SharedTimer.h"
     30 
     31 #include <wtf/Assertions.h>
     32 #include <wtf/CurrentTime.h>
     33 #include <gdk/gdk.h>
     34 #include <glib.h>
     35 
     36 namespace WebCore {
     37 
     38 static guint sharedTimer;
     39 static void (*sharedTimerFiredFunction)();
     40 
     41 void setSharedTimerFiredFunction(void (*f)())
     42 {
     43     sharedTimerFiredFunction = f;
     44 }
     45 
     46 static gboolean timeout_cb(gpointer)
     47 {
     48     if (sharedTimerFiredFunction)
     49         sharedTimerFiredFunction();
     50     return FALSE;
     51 }
     52 
     53 void setSharedTimerFireTime(double fireTime)
     54 {
     55     ASSERT(sharedTimerFiredFunction);
     56 
     57     double interval = fireTime - currentTime();
     58     guint intervalInMS;
     59     if (interval < 0)
     60         intervalInMS = 0;
     61     else {
     62         interval *= 1000;
     63         intervalInMS = (guint)interval;
     64     }
     65 
     66     stopSharedTimer();
     67     sharedTimer = g_timeout_add_full(GDK_PRIORITY_REDRAW, intervalInMS, timeout_cb, 0, 0);
     68 }
     69 
     70 void stopSharedTimer()
     71 {
     72     gboolean s = FALSE;
     73     if (sharedTimer == 0)
     74         return;
     75 
     76     s = g_source_remove(sharedTimer);
     77     ASSERT(s);
     78     sharedTimer = 0;
     79 }
     80 
     81 }
     82